hotspot/src/os/windows/vm/os_windows.cpp
author coleenp
Sun, 13 Apr 2008 17:43:42 -0400
changeset 360 21d113ecbf6a
parent 252 050143a0dbfb
child 389 a44227868a4a
permissions -rw-r--r--
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
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/*
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 * Copyright 1997-2007 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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#ifdef _WIN64
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// Must be at least Windows 2000 or XP to use VectoredExceptions
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#define _WIN32_WINNT 0x500
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#endif
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// do not include precompiled header file
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# include "incls/_os_windows.cpp.incl"
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#ifdef _DEBUG
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#include <crtdbg.h>
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#endif
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#include <windows.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/timeb.h>
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#include <objidl.h>
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#include <shlobj.h>
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#include <malloc.h>
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#include <signal.h>
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#include <direct.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <io.h>
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#include <process.h>              // For _beginthreadex(), _endthreadex()
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#include <imagehlp.h>             // For os::dll_address_to_function_name
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/* for enumerating dll libraries */
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#include <tlhelp32.h>
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#include <vdmdbg.h>
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// for timer info max values which include all bits
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#define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF)
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// For DLL loading/load error detection
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// Values of PE COFF
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#define IMAGE_FILE_PTR_TO_SIGNATURE 0x3c
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#define IMAGE_FILE_SIGNATURE_LENGTH 4
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static HANDLE main_process;
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static HANDLE main_thread;
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static int    main_thread_id;
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static FILETIME process_creation_time;
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static FILETIME process_exit_time;
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static FILETIME process_user_time;
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static FILETIME process_kernel_time;
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#ifdef _WIN64
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PVOID  topLevelVectoredExceptionHandler = NULL;
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#endif
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#ifdef _M_IA64
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#define __CPU__ ia64
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#elif _M_AMD64
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#define __CPU__ amd64
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#else
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#define __CPU__ i486
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#endif
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// save DLL module handle, used by GetModuleFileName
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HINSTANCE vm_lib_handle;
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static int getLastErrorString(char *buf, size_t len);
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BOOL WINAPI DllMain(HINSTANCE hinst, DWORD reason, LPVOID reserved) {
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  switch (reason) {
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    case DLL_PROCESS_ATTACH:
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      vm_lib_handle = hinst;
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      if(ForceTimeHighResolution)
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        timeBeginPeriod(1L);
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      break;
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    case DLL_PROCESS_DETACH:
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      if(ForceTimeHighResolution)
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        timeEndPeriod(1L);
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#ifdef _WIN64
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      if (topLevelVectoredExceptionHandler != NULL) {
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        RemoveVectoredExceptionHandler(topLevelVectoredExceptionHandler);
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        topLevelVectoredExceptionHandler = NULL;
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      }
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#endif
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      break;
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    default:
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      break;
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  }
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  return true;
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}
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static inline double fileTimeAsDouble(FILETIME* time) {
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  const double high  = (double) ((unsigned int) ~0);
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  const double split = 10000000.0;
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  double result = (time->dwLowDateTime / split) +
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                   time->dwHighDateTime * (high/split);
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  return result;
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}
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// Implementation of os
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bool os::getenv(const char* name, char* buffer, int len) {
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 int result = GetEnvironmentVariable(name, buffer, len);
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 return result > 0 && result < len;
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}
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// No setuid programs under Windows.
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bool os::have_special_privileges() {
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  return false;
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}
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// This method is  a periodic task to check for misbehaving JNI applications
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// under CheckJNI, we can add any periodic checks here.
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// For Windows at the moment does nothing
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void os::run_periodic_checks() {
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  return;
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}
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#ifndef _WIN64
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LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo);
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#endif
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void os::init_system_properties_values() {
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  /* sysclasspath, java_home, dll_dir */
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  {
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      char *home_path;
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      char *dll_path;
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      char *pslash;
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      char *bin = "\\bin";
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      char home_dir[MAX_PATH];
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      if (!getenv("_ALT_JAVA_HOME_DIR", home_dir, MAX_PATH)) {
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          os::jvm_path(home_dir, sizeof(home_dir));
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          // Found the full path to jvm[_g].dll.
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          // Now cut the path to <java_home>/jre if we can.
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          *(strrchr(home_dir, '\\')) = '\0';  /* get rid of \jvm.dll */
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          pslash = strrchr(home_dir, '\\');
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          if (pslash != NULL) {
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              *pslash = '\0';                 /* get rid of \{client|server} */
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              pslash = strrchr(home_dir, '\\');
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              if (pslash != NULL)
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                  *pslash = '\0';             /* get rid of \bin */
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          }
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      }
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      home_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + 1);
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      if (home_path == NULL)
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          return;
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      strcpy(home_path, home_dir);
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      Arguments::set_java_home(home_path);
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      dll_path = NEW_C_HEAP_ARRAY(char, strlen(home_dir) + strlen(bin) + 1);
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      if (dll_path == NULL)
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          return;
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      strcpy(dll_path, home_dir);
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      strcat(dll_path, bin);
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      Arguments::set_dll_dir(dll_path);
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      if (!set_boot_path('\\', ';'))
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          return;
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  }
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  /* library_path */
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  #define EXT_DIR "\\lib\\ext"
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  #define BIN_DIR "\\bin"
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  #define PACKAGE_DIR "\\Sun\\Java"
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  {
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    /* Win32 library search order (See the documentation for LoadLibrary):
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     *
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     * 1. The directory from which application is loaded.
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     * 2. The current directory
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     * 3. The system wide Java Extensions directory (Java only)
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     * 4. System directory (GetSystemDirectory)
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     * 5. Windows directory (GetWindowsDirectory)
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     * 6. The PATH environment variable
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     */
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    char *library_path;
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    char tmp[MAX_PATH];
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    char *path_str = ::getenv("PATH");
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    library_path = NEW_C_HEAP_ARRAY(char, MAX_PATH * 5 + sizeof(PACKAGE_DIR) +
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        sizeof(BIN_DIR) + (path_str ? strlen(path_str) : 0) + 10);
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    library_path[0] = '\0';
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    GetModuleFileName(NULL, tmp, sizeof(tmp));
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    *(strrchr(tmp, '\\')) = '\0';
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    strcat(library_path, tmp);
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    strcat(library_path, ";.");
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    GetWindowsDirectory(tmp, sizeof(tmp));
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    strcat(library_path, ";");
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    strcat(library_path, tmp);
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    strcat(library_path, PACKAGE_DIR BIN_DIR);
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    GetSystemDirectory(tmp, sizeof(tmp));
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    strcat(library_path, ";");
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    strcat(library_path, tmp);
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    GetWindowsDirectory(tmp, sizeof(tmp));
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    strcat(library_path, ";");
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    strcat(library_path, tmp);
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    if (path_str) {
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        strcat(library_path, ";");
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        strcat(library_path, path_str);
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    }
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   234
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    Arguments::set_library_path(library_path);
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    FREE_C_HEAP_ARRAY(char, library_path);
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  }
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   238
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  /* Default extensions directory */
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  {
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    char path[MAX_PATH];
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    char buf[2 * MAX_PATH + 2 * sizeof(EXT_DIR) + sizeof(PACKAGE_DIR) + 1];
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    GetWindowsDirectory(path, MAX_PATH);
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    sprintf(buf, "%s%s;%s%s%s", Arguments::get_java_home(), EXT_DIR,
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        path, PACKAGE_DIR, EXT_DIR);
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    Arguments::set_ext_dirs(buf);
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  }
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  #undef EXT_DIR
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  #undef BIN_DIR
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  #undef PACKAGE_DIR
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   251
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  /* Default endorsed standards directory. */
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  {
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    #define ENDORSED_DIR "\\lib\\endorsed"
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    size_t len = strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR);
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    char * buf = NEW_C_HEAP_ARRAY(char, len);
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    sprintf(buf, "%s%s", Arguments::get_java_home(), ENDORSED_DIR);
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    Arguments::set_endorsed_dirs(buf);
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    #undef ENDORSED_DIR
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  }
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#ifndef _WIN64
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  SetUnhandledExceptionFilter(Handle_FLT_Exception);
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#endif
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  // Done
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  return;
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}
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void os::breakpoint() {
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  DebugBreak();
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}
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   273
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// Invoked from the BREAKPOINT Macro
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extern "C" void breakpoint() {
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  os::breakpoint();
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}
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   278
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// Returns an estimate of the current stack pointer. Result must be guaranteed
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// to point into the calling threads stack, and be no lower than the current
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// stack pointer.
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   282
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   283
address os::current_stack_pointer() {
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  int dummy;
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  address sp = (address)&dummy;
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  return sp;
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}
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   288
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// os::current_stack_base()
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//
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//   Returns the base of the stack, which is the stack's
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//   starting address.  This function must be called
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   293
//   while running on the stack of the thread being queried.
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   294
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   295
address os::current_stack_base() {
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   296
  MEMORY_BASIC_INFORMATION minfo;
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   297
  address stack_bottom;
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   298
  size_t stack_size;
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   299
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  VirtualQuery(&minfo, &minfo, sizeof(minfo));
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  stack_bottom =  (address)minfo.AllocationBase;
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  stack_size = minfo.RegionSize;
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   303
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   304
  // Add up the sizes of all the regions with the same
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   305
  // AllocationBase.
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   306
  while( 1 )
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   307
  {
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   308
    VirtualQuery(stack_bottom+stack_size, &minfo, sizeof(minfo));
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   309
    if ( stack_bottom == (address)minfo.AllocationBase )
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   310
      stack_size += minfo.RegionSize;
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   311
    else
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   312
      break;
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   313
  }
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   314
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   315
#ifdef _M_IA64
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  // IA64 has memory and register stacks
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  stack_size = stack_size / 2;
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   318
#endif
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   319
  return stack_bottom + stack_size;
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   320
}
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   321
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   322
size_t os::current_stack_size() {
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   323
  size_t sz;
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   324
  MEMORY_BASIC_INFORMATION minfo;
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   325
  VirtualQuery(&minfo, &minfo, sizeof(minfo));
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   326
  sz = (size_t)os::current_stack_base() - (size_t)minfo.AllocationBase;
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   327
  return sz;
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   328
}
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   329
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   330
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   331
LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo);
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   332
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   333
// Thread start routine for all new Java threads
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   334
static unsigned __stdcall java_start(Thread* thread) {
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   335
  // Try to randomize the cache line index of hot stack frames.
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   336
  // This helps when threads of the same stack traces evict each other's
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   337
  // cache lines. The threads can be either from the same JVM instance, or
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   338
  // from different JVM instances. The benefit is especially true for
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   339
  // processors with hyperthreading technology.
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   340
  static int counter = 0;
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   341
  int pid = os::current_process_id();
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   342
  _alloca(((pid ^ counter++) & 7) * 128);
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   343
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   344
  OSThread* osthr = thread->osthread();
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   345
  assert(osthr->get_state() == RUNNABLE, "invalid os thread state");
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   346
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   347
  if (UseNUMA) {
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   348
    int lgrp_id = os::numa_get_group_id();
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   349
    if (lgrp_id != -1) {
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   350
      thread->set_lgrp_id(lgrp_id);
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   351
    }
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   352
  }
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   353
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   354
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   355
  if (UseVectoredExceptions) {
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parents:
diff changeset
   356
    // If we are using vectored exception we don't need to set a SEH
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   357
    thread->run();
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   358
  }
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   359
  else {
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   360
    // Install a win32 structured exception handler around every thread created
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   361
    // by VM, so VM can genrate error dump when an exception occurred in non-
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   362
    // Java thread (e.g. VM thread).
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   363
    __try {
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   364
       thread->run();
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diff changeset
   365
    } __except(topLevelExceptionFilter(
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   366
               (_EXCEPTION_POINTERS*)_exception_info())) {
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   367
        // Nothing to do.
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   368
    }
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   369
  }
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   370
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   371
  // One less thread is executing
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   372
  // When the VMThread gets here, the main thread may have already exited
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   373
  // which frees the CodeHeap containing the Atomic::add code
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   374
  if (thread != VMThread::vm_thread() && VMThread::vm_thread() != NULL) {
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   375
    Atomic::dec_ptr((intptr_t*)&os::win32::_os_thread_count);
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   376
  }
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   377
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   378
  return 0;
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   379
}
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   380
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   381
static OSThread* create_os_thread(Thread* thread, HANDLE thread_handle, int thread_id) {
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   382
  // Allocate the OSThread object
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   383
  OSThread* osthread = new OSThread(NULL, NULL);
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   384
  if (osthread == NULL) return NULL;
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   385
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parents:
diff changeset
   386
  // Initialize support for Java interrupts
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parents:
diff changeset
   387
  HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL);
489c9b5090e2 Initial load
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parents:
diff changeset
   388
  if (interrupt_event == NULL) {
489c9b5090e2 Initial load
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diff changeset
   389
    delete osthread;
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diff changeset
   390
    return NULL;
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diff changeset
   391
  }
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   392
  osthread->set_interrupt_event(interrupt_event);
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diff changeset
   393
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parents:
diff changeset
   394
  // Store info on the Win32 thread into the OSThread
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parents:
diff changeset
   395
  osthread->set_thread_handle(thread_handle);
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diff changeset
   396
  osthread->set_thread_id(thread_id);
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diff changeset
   397
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diff changeset
   398
  if (UseNUMA) {
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parents:
diff changeset
   399
    int lgrp_id = os::numa_get_group_id();
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diff changeset
   400
    if (lgrp_id != -1) {
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parents:
diff changeset
   401
      thread->set_lgrp_id(lgrp_id);
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diff changeset
   402
    }
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parents:
diff changeset
   403
  }
489c9b5090e2 Initial load
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parents:
diff changeset
   404
489c9b5090e2 Initial load
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parents:
diff changeset
   405
  // Initial thread state is INITIALIZED, not SUSPENDED
489c9b5090e2 Initial load
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parents:
diff changeset
   406
  osthread->set_state(INITIALIZED);
489c9b5090e2 Initial load
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parents:
diff changeset
   407
489c9b5090e2 Initial load
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parents:
diff changeset
   408
  return osthread;
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parents:
diff changeset
   409
}
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parents:
diff changeset
   410
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parents:
diff changeset
   411
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diff changeset
   412
bool os::create_attached_thread(JavaThread* thread) {
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parents:
diff changeset
   413
#ifdef ASSERT
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diff changeset
   414
  thread->verify_not_published();
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   415
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
  HANDLE thread_h;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
  if (!DuplicateHandle(main_process, GetCurrentThread(), GetCurrentProcess(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
                       &thread_h, THREAD_ALL_ACCESS, false, 0)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
    fatal("DuplicateHandle failed\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
  OSThread* osthread = create_os_thread(thread, thread_h,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
                                        (int)current_thread_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  if (osthread == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
     return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
  // Initial thread state is RUNNABLE
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
  osthread->set_state(RUNNABLE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
  thread->set_osthread(osthread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
bool os::create_main_thread(JavaThread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
  thread->verify_not_published();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
  if (_starting_thread == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
    _starting_thread = create_os_thread(thread, main_thread, main_thread_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
     if (_starting_thread == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
        return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
  // The primordial thread is runnable from the start)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
  _starting_thread->set_state(RUNNABLE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
  thread->set_osthread(_starting_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
// Allocate and initialize a new OSThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
  unsigned thread_id;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
  // Allocate the OSThread object
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
  OSThread* osthread = new OSThread(NULL, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
  if (osthread == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
  // Initialize support for Java interrupts
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
  HANDLE interrupt_event = CreateEvent(NULL, true, false, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
  if (interrupt_event == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
    delete osthread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
  osthread->set_interrupt_event(interrupt_event);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
  osthread->set_interrupted(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
  thread->set_osthread(osthread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
  if (stack_size == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
    switch (thr_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
    case os::java_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
      // Java threads use ThreadStackSize which default value can be changed with the flag -Xss
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
      if (JavaThread::stack_size_at_create() > 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
        stack_size = JavaThread::stack_size_at_create();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
    case os::compiler_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
      if (CompilerThreadStackSize > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
        stack_size = (size_t)(CompilerThreadStackSize * K);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
      } // else fall through:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
        // use VMThreadStackSize if CompilerThreadStackSize is not defined
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
    case os::vm_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
    case os::pgc_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
    case os::cgc_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
    case os::watcher_thread:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
      if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
  // Create the Win32 thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
  // Contrary to what MSDN document says, "stack_size" in _beginthreadex()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
  // does not specify stack size. Instead, it specifies the size of
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
  // initially committed space. The stack size is determined by
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
  // PE header in the executable. If the committed "stack_size" is larger
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
  // than default value in the PE header, the stack is rounded up to the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
  // nearest multiple of 1MB. For example if the launcher has default
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
  // stack size of 320k, specifying any size less than 320k does not
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
  // affect the actual stack size at all, it only affects the initial
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
  // commitment. On the other hand, specifying 'stack_size' larger than
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
  // default value may cause significant increase in memory usage, because
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
  // not only the stack space will be rounded up to MB, but also the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
  // entire space is committed upfront.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
  // Finally Windows XP added a new flag 'STACK_SIZE_PARAM_IS_A_RESERVATION'
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
  // for CreateThread() that can treat 'stack_size' as stack size. However we
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
  // are not supposed to call CreateThread() directly according to MSDN
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
  // document because JVM uses C runtime library. The good news is that the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
  // flag appears to work with _beginthredex() as well.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
#ifndef STACK_SIZE_PARAM_IS_A_RESERVATION
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
#define STACK_SIZE_PARAM_IS_A_RESERVATION  (0x10000)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
  HANDLE thread_handle =
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
    (HANDLE)_beginthreadex(NULL,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
                           (unsigned)stack_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
                           (unsigned (__stdcall *)(void*)) java_start,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
                           thread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
                           CREATE_SUSPENDED | STACK_SIZE_PARAM_IS_A_RESERVATION,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
                           &thread_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
  if (thread_handle == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
    // perhaps STACK_SIZE_PARAM_IS_A_RESERVATION is not supported, try again
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
    // without the flag.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
    thread_handle =
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
    (HANDLE)_beginthreadex(NULL,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
                           (unsigned)stack_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
                           (unsigned (__stdcall *)(void*)) java_start,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
                           thread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
                           CREATE_SUSPENDED,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
                           &thread_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
  if (thread_handle == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
    // Need to clean up stuff we've allocated so far
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
    CloseHandle(osthread->interrupt_event());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
    thread->set_osthread(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
    delete osthread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
  Atomic::inc_ptr((intptr_t*)&os::win32::_os_thread_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
  // Store info on the Win32 thread into the OSThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
  osthread->set_thread_handle(thread_handle);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
  osthread->set_thread_id(thread_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
  // Initial thread state is INITIALIZED, not SUSPENDED
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
  osthread->set_state(INITIALIZED);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
  // The thread is returned suspended (in state INITIALIZED), and is started higher up in the call chain
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
// Free Win32 resources related to the OSThread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
void os::free_thread(OSThread* osthread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
  assert(osthread != NULL, "osthread not set");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
  CloseHandle(osthread->thread_handle());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
  CloseHandle(osthread->interrupt_event());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
  delete osthread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
static int    has_performance_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
static jlong first_filetime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
static jlong initial_performance_count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
static jlong performance_frequency;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
jlong as_long(LARGE_INTEGER x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
  jlong result = 0; // initialization to avoid warning
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
  set_high(&result, x.HighPart);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
  set_low(&result,  x.LowPart);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
jlong os::elapsed_counter() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
  LARGE_INTEGER count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
  if (has_performance_count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
    QueryPerformanceCounter(&count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
    return as_long(count) - initial_performance_count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
    FILETIME wt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
    GetSystemTimeAsFileTime(&wt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
    return (jlong_from(wt.dwHighDateTime, wt.dwLowDateTime) - first_filetime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
jlong os::elapsed_frequency() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
  if (has_performance_count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
    return performance_frequency;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
   // the FILETIME time is the number of 100-nanosecond intervals since January 1,1601.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
   return 10000000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
julong os::available_memory() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
  return win32::available_memory();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
julong os::win32::available_memory() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
  // FIXME: GlobalMemoryStatus() may return incorrect value if total memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
  // is larger than 4GB
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
  MEMORYSTATUS ms;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
  GlobalMemoryStatus(&ms);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
  return (julong)ms.dwAvailPhys;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
julong os::physical_memory() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
  return win32::physical_memory();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
julong os::allocatable_physical_memory(julong size) {
193
171c404abf72 6629887: 64-bit windows should not restrict default heap size to 1400m
phh
parents: 1
diff changeset
   624
#ifdef _LP64
171c404abf72 6629887: 64-bit windows should not restrict default heap size to 1400m
phh
parents: 1
diff changeset
   625
  return size;
171c404abf72 6629887: 64-bit windows should not restrict default heap size to 1400m
phh
parents: 1
diff changeset
   626
#else
171c404abf72 6629887: 64-bit windows should not restrict default heap size to 1400m
phh
parents: 1
diff changeset
   627
  // Limit to 1400m because of the 2gb address space wall
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
  return MIN2(size, (julong)1400*M);
193
171c404abf72 6629887: 64-bit windows should not restrict default heap size to 1400m
phh
parents: 1
diff changeset
   629
#endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
// VC6 lacks DWORD_PTR
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
#if _MSC_VER < 1300
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
typedef UINT_PTR DWORD_PTR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
int os::active_processor_count() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
  DWORD_PTR lpProcessAffinityMask = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
  DWORD_PTR lpSystemAffinityMask = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
  int proc_count = processor_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
  if (proc_count <= sizeof(UINT_PTR) * BitsPerByte &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
      GetProcessAffinityMask(GetCurrentProcess(), &lpProcessAffinityMask, &lpSystemAffinityMask)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
    // Nof active processors is number of bits in process affinity mask
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
    int bitcount = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
    while (lpProcessAffinityMask != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
      lpProcessAffinityMask = lpProcessAffinityMask & (lpProcessAffinityMask-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
      bitcount++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
    return bitcount;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
    return proc_count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
bool os::distribute_processes(uint length, uint* distribution) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
  // Not yet implemented.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
bool os::bind_to_processor(uint processor_id) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
  // Not yet implemented.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
static void initialize_performance_counter() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
  LARGE_INTEGER count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
  if (QueryPerformanceFrequency(&count)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
    has_performance_count = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
    performance_frequency = as_long(count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
    QueryPerformanceCounter(&count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
    initial_performance_count = as_long(count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
    has_performance_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
    FILETIME wt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
    GetSystemTimeAsFileTime(&wt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
    first_filetime = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
double os::elapsedTime() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
  return (double) elapsed_counter() / (double) elapsed_frequency();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
// Windows format:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
//   The FILETIME structure is a 64-bit value representing the number of 100-nanosecond intervals since January 1, 1601.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
// Java format:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
//   Java standards require the number of milliseconds since 1/1/1970
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
// Constant offset - calculated using offset()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
static jlong  _offset   = 116444736000000000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
// Fake time counter for reproducible results when debugging
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
static jlong  fake_time = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
// Just to be safe, recalculate the offset in debug mode
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
static jlong _calculated_offset = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
static int   _has_calculated_offset = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
jlong offset() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
  if (_has_calculated_offset) return _calculated_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
  SYSTEMTIME java_origin;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
  java_origin.wYear          = 1970;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
  java_origin.wMonth         = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
  java_origin.wDayOfWeek     = 0; // ignored
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
  java_origin.wDay           = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
  java_origin.wHour          = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  java_origin.wMinute        = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
  java_origin.wSecond        = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
  java_origin.wMilliseconds  = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
  FILETIME jot;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
  if (!SystemTimeToFileTime(&java_origin, &jot)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
    fatal1("Error = %d\nWindows error", GetLastError());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
  _calculated_offset = jlong_from(jot.dwHighDateTime, jot.dwLowDateTime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
  _has_calculated_offset = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
  assert(_calculated_offset == _offset, "Calculated and constant time offsets must be equal");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
  return _calculated_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
jlong offset() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
  return _offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
jlong windows_to_java_time(FILETIME wt) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
  jlong a = jlong_from(wt.dwHighDateTime, wt.dwLowDateTime);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
  return (a - offset()) / 10000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
FILETIME java_to_windows_time(jlong l) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
  jlong a = (l * 10000) + offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
  FILETIME result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
  result.dwHighDateTime = high(a);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
  result.dwLowDateTime  = low(a);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
jlong os::javaTimeMillis() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
  if (UseFakeTimers) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
    return fake_time++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
  } else {
234
4da9c1bbc810 6667833: Remove CacheTimeMillis
sbohne
parents: 1
diff changeset
   744
    FILETIME wt;
4da9c1bbc810 6667833: Remove CacheTimeMillis
sbohne
parents: 1
diff changeset
   745
    GetSystemTimeAsFileTime(&wt);
4da9c1bbc810 6667833: Remove CacheTimeMillis
sbohne
parents: 1
diff changeset
   746
    return windows_to_java_time(wt);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
#define NANOS_PER_SEC         CONST64(1000000000)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
#define NANOS_PER_MILLISEC    1000000
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
jlong os::javaTimeNanos() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
  if (!has_performance_count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
    return javaTimeMillis() * NANOS_PER_MILLISEC; // the best we can do.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
    LARGE_INTEGER current_count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
    QueryPerformanceCounter(&current_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
    double current = as_long(current_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
    double freq = performance_frequency;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
    jlong time = (jlong)((current/freq) * NANOS_PER_SEC);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
    return time;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
  if (!has_performance_count) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
    // javaTimeMillis() doesn't have much percision,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
    // but it is not going to wrap -- so all 64 bits
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
    info_ptr->max_value = ALL_64_BITS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
    // this is a wall clock timer, so may skip
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
    info_ptr->may_skip_backward = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
    info_ptr->may_skip_forward = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
    jlong freq = performance_frequency;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
    if (freq < NANOS_PER_SEC) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
      // the performance counter is 64 bits and we will
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
      // be multiplying it -- so no wrap in 64 bits
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
      info_ptr->max_value = ALL_64_BITS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
    } else if (freq > NANOS_PER_SEC) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
      // use the max value the counter can reach to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
      // determine the max value which could be returned
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
      julong max_counter = (julong)ALL_64_BITS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
      info_ptr->max_value = (jlong)(max_counter / (freq / NANOS_PER_SEC));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
      // the performance counter is 64 bits and we will
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
      // be using it directly -- so no wrap in 64 bits
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
      info_ptr->max_value = ALL_64_BITS;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
    // using a counter, so no skipping
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
    info_ptr->may_skip_backward = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
    info_ptr->may_skip_forward = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
  info_ptr->kind = JVMTI_TIMER_ELAPSED;                // elapsed not CPU time
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
char* os::local_time_string(char *buf, size_t buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
  SYSTEMTIME st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
  GetLocalTime(&st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
  jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
               st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
  return buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
bool os::getTimesSecs(double* process_real_time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
                     double* process_user_time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
                     double* process_system_time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
  HANDLE h_process = GetCurrentProcess();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
  FILETIME create_time, exit_time, kernel_time, user_time;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
  BOOL result = GetProcessTimes(h_process,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
                               &create_time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
                               &exit_time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
                               &kernel_time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
                               &user_time);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
  if (result != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
    FILETIME wt;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
    GetSystemTimeAsFileTime(&wt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
    jlong rtc_millis = windows_to_java_time(wt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
    jlong user_millis = windows_to_java_time(user_time);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
    jlong system_millis = windows_to_java_time(kernel_time);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
    *process_real_time = ((double) rtc_millis) / ((double) MILLIUNITS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
    *process_user_time = ((double) user_millis) / ((double) MILLIUNITS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
    *process_system_time = ((double) system_millis) / ((double) MILLIUNITS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
void os::shutdown() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
  // allow PerfMemory to attempt cleanup of any persistent resources
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
  perfMemory_exit();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
  // flush buffered output, finish log files
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
  ostream_abort();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
  // Check for abort hook
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
  abort_hook_t abort_hook = Arguments::abort_hook();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
  if (abort_hook != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
    abort_hook();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
void os::abort(bool dump_core)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
  os::shutdown();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
  // no core dump on Windows
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
  ::exit(1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
// Die immediately, no exit hook, no abort hook, no cleanup.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
void os::die() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
  _exit(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
// Directory routines copied from src/win32/native/java/io/dirent_md.c
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
//  * dirent_md.c       1.15 00/02/02
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
// The declarations for DIR and struct dirent are in jvm_win32.h.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
/* Caller must have already run dirname through JVM_NativePath, which removes
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
   duplicate slashes and converts all instances of '/' into '\\'. */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
DIR *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
os::opendir(const char *dirname)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
    assert(dirname != NULL, "just checking");   // hotspot change
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
    DIR *dirp = (DIR *)malloc(sizeof(DIR));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
    DWORD fattr;                                // hotspot change
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
    char alt_dirname[4] = { 0, 0, 0, 0 };
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
    if (dirp == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
        errno = ENOMEM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
        return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
    /*
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
     * Win32 accepts "\" in its POSIX stat(), but refuses to treat it
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
     * as a directory in FindFirstFile().  We detect this case here and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
     * prepend the current drive name.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
     */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
    if (dirname[1] == '\0' && dirname[0] == '\\') {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
        alt_dirname[0] = _getdrive() + 'A' - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
        alt_dirname[1] = ':';
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
        alt_dirname[2] = '\\';
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
        alt_dirname[3] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
        dirname = alt_dirname;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
    dirp->path = (char *)malloc(strlen(dirname) + 5);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
    if (dirp->path == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
        free(dirp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
        errno = ENOMEM;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
        return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
    strcpy(dirp->path, dirname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
    fattr = GetFileAttributes(dirp->path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
    if (fattr == 0xffffffff) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
        free(dirp->path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
        free(dirp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
        errno = ENOENT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
        return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
    } else if ((fattr & FILE_ATTRIBUTE_DIRECTORY) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
        free(dirp->path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
        free(dirp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
        errno = ENOTDIR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
        return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
    /* Append "*.*", or possibly "\\*.*", to path */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
    if (dirp->path[1] == ':'
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
        && (dirp->path[2] == '\0'
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
            || (dirp->path[2] == '\\' && dirp->path[3] == '\0'))) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
        /* No '\\' needed for cases like "Z:" or "Z:\" */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
        strcat(dirp->path, "*.*");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
        strcat(dirp->path, "\\*.*");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
    dirp->handle = FindFirstFile(dirp->path, &dirp->find_data);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
    if (dirp->handle == INVALID_HANDLE_VALUE) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
        if (GetLastError() != ERROR_FILE_NOT_FOUND) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
            free(dirp->path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
            free(dirp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
            errno = EACCES;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
            return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
    return dirp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
/* parameter dbuf unused on Windows */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
struct dirent *
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
os::readdir(DIR *dirp, dirent *dbuf)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
    assert(dirp != NULL, "just checking");      // hotspot change
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
    if (dirp->handle == INVALID_HANDLE_VALUE) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
        return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
    strcpy(dirp->dirent.d_name, dirp->find_data.cFileName);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
    if (!FindNextFile(dirp->handle, &dirp->find_data)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
        if (GetLastError() == ERROR_INVALID_HANDLE) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
            errno = EBADF;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
            return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
        FindClose(dirp->handle);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
        dirp->handle = INVALID_HANDLE_VALUE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
    return &dirp->dirent;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
int
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
os::closedir(DIR *dirp)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
    assert(dirp != NULL, "just checking");      // hotspot change
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
    if (dirp->handle != INVALID_HANDLE_VALUE) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
        if (!FindClose(dirp->handle)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
            errno = EBADF;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
            return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
        dirp->handle = INVALID_HANDLE_VALUE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
    free(dirp->path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
    free(dirp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
    return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
const char* os::dll_file_extension() { return ".dll"; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
const char * os::get_temp_directory()
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
    static char path_buf[MAX_PATH];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
    if (GetTempPath(MAX_PATH, path_buf)>0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
      return path_buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
    else{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
      path_buf[0]='\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
      return path_buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
// Needs to be in os specific directory because windows requires another
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
// header file <direct.h>
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
const char* os::get_current_directory(char *buf, int buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
  return _getcwd(buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
//-----------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
// Helper functions for fatal error handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
// The following library functions are resolved dynamically at runtime:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
// PSAPI functions, for Windows NT, 2000, XP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
// psapi.h doesn't come with Visual Studio 6; it can be downloaded as Platform
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
// SDK from Microsoft.  Here are the definitions copied from psapi.h
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
typedef struct _MODULEINFO {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
    LPVOID lpBaseOfDll;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
    DWORD SizeOfImage;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
    LPVOID EntryPoint;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
} MODULEINFO, *LPMODULEINFO;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
static BOOL  (WINAPI *_EnumProcessModules)  ( HANDLE, HMODULE *, DWORD, LPDWORD );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
static DWORD (WINAPI *_GetModuleFileNameEx) ( HANDLE, HMODULE, LPTSTR, DWORD );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
static BOOL  (WINAPI *_GetModuleInformation)( HANDLE, HMODULE, LPMODULEINFO, DWORD );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
// ToolHelp Functions, for Windows 95, 98 and ME
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
static HANDLE(WINAPI *_CreateToolhelp32Snapshot)(DWORD,DWORD) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
static BOOL  (WINAPI *_Module32First)           (HANDLE,LPMODULEENTRY32) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
static BOOL  (WINAPI *_Module32Next)            (HANDLE,LPMODULEENTRY32) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
bool _has_psapi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
bool _psapi_init = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
bool _has_toolhelp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
static bool _init_psapi() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
  HINSTANCE psapi = LoadLibrary( "PSAPI.DLL" ) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
  if( psapi == NULL ) return false ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
  _EnumProcessModules = CAST_TO_FN_PTR(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
      BOOL(WINAPI *)(HANDLE, HMODULE *, DWORD, LPDWORD),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
      GetProcAddress(psapi, "EnumProcessModules")) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
  _GetModuleFileNameEx = CAST_TO_FN_PTR(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
      DWORD (WINAPI *)(HANDLE, HMODULE, LPTSTR, DWORD),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
      GetProcAddress(psapi, "GetModuleFileNameExA"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1033
  _GetModuleInformation = CAST_TO_FN_PTR(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1034
      BOOL (WINAPI *)(HANDLE, HMODULE, LPMODULEINFO, DWORD),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
      GetProcAddress(psapi, "GetModuleInformation"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
  _has_psapi = (_EnumProcessModules && _GetModuleFileNameEx && _GetModuleInformation);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
  _psapi_init = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
  return _has_psapi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1042
static bool _init_toolhelp() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
  HINSTANCE kernel32 = LoadLibrary("Kernel32.DLL") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
  if (kernel32 == NULL) return false ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
  _CreateToolhelp32Snapshot = CAST_TO_FN_PTR(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
      HANDLE(WINAPI *)(DWORD,DWORD),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
      GetProcAddress(kernel32, "CreateToolhelp32Snapshot"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
  _Module32First = CAST_TO_FN_PTR(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
      BOOL(WINAPI *)(HANDLE,LPMODULEENTRY32),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
      GetProcAddress(kernel32, "Module32First" ));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1052
  _Module32Next = CAST_TO_FN_PTR(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1053
      BOOL(WINAPI *)(HANDLE,LPMODULEENTRY32),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
      GetProcAddress(kernel32, "Module32Next" ));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1055
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1056
  _has_toolhelp = (_CreateToolhelp32Snapshot && _Module32First && _Module32Next);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
  return _has_toolhelp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
#ifdef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
// Helper routine which returns true if address in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
// within the NTDLL address space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
static bool _addr_in_ntdll( address addr )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
  HMODULE hmod;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
  MODULEINFO minfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
  hmod = GetModuleHandle("NTDLL.DLL");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
  if ( hmod == NULL ) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
  if ( !_GetModuleInformation( GetCurrentProcess(), hmod,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
                               &minfo, sizeof(MODULEINFO)) )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
  if ( (addr >= minfo.lpBaseOfDll) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
       (addr < (address)((uintptr_t)minfo.lpBaseOfDll + (uintptr_t)minfo.SizeOfImage)))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
// Enumerate all modules for a given process ID
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
// Notice that Windows 95/98/Me and Windows NT/2000/XP have
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
// different API for doing this. We use PSAPI.DLL on NT based
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
// Windows and ToolHelp on 95/98/Me.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
// Callback function that is called by enumerate_modules() on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
// every DLL module.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1092
// Input parameters:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
//    int       pid,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
//    char*     module_file_name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
//    address   module_base_addr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
//    unsigned  module_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
//    void*     param
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
typedef int (*EnumModulesCallbackFunc)(int, char *, address, unsigned, void *);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
// enumerate_modules for Windows NT, using PSAPI
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
static int _enumerate_modules_winnt( int pid, EnumModulesCallbackFunc func, void * param)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
  HANDLE   hProcess ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
# define MAX_NUM_MODULES 128
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
  HMODULE     modules[MAX_NUM_MODULES];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
  static char filename[ MAX_PATH ];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
  int         result = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
  if (!_has_psapi && (_psapi_init || !_init_psapi())) return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
  hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
                         FALSE, pid ) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
  if (hProcess == NULL) return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
  DWORD size_needed;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
  if (!_EnumProcessModules(hProcess, modules,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
                           sizeof(modules), &size_needed)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
      CloseHandle( hProcess );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
      return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
  // number of modules that are currently loaded
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
  int num_modules = size_needed / sizeof(HMODULE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
  for (int i = 0; i < MIN2(num_modules, MAX_NUM_MODULES); i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
    // Get Full pathname:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
    if(!_GetModuleFileNameEx(hProcess, modules[i],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
                             filename, sizeof(filename))) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
        filename[0] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
    MODULEINFO modinfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
    if (!_GetModuleInformation(hProcess, modules[i],
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
                               &modinfo, sizeof(modinfo))) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
        modinfo.lpBaseOfDll = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
        modinfo.SizeOfImage = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
    // Invoke callback function
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
    result = func(pid, filename, (address)modinfo.lpBaseOfDll,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
                  modinfo.SizeOfImage, param);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
    if (result) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
  CloseHandle( hProcess ) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
// enumerate_modules for Windows 95/98/ME, using TOOLHELP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
static int _enumerate_modules_windows( int pid, EnumModulesCallbackFunc func, void *param)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1154
  HANDLE                hSnapShot ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
  static MODULEENTRY32  modentry ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
  int                   result = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
  if (!_has_toolhelp) return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
  // Get a handle to a Toolhelp snapshot of the system
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
  hSnapShot = _CreateToolhelp32Snapshot(TH32CS_SNAPMODULE, pid ) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
  if( hSnapShot == INVALID_HANDLE_VALUE ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
      return FALSE ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1165
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
  // iterate through all modules
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
  modentry.dwSize = sizeof(MODULEENTRY32) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
  bool not_done = _Module32First( hSnapShot, &modentry ) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
  while( not_done ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
    // invoke the callback
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
    result=func(pid, modentry.szExePath, (address)modentry.modBaseAddr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
                modentry.modBaseSize, param);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
    if (result) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
    modentry.dwSize = sizeof(MODULEENTRY32) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1177
    not_done = _Module32Next( hSnapShot, &modentry ) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
  CloseHandle(hSnapShot);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
int enumerate_modules( int pid, EnumModulesCallbackFunc func, void * param )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
  // Get current process ID if caller doesn't provide it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
  if (!pid) pid = os::current_process_id();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
  if (os::win32::is_nt()) return _enumerate_modules_winnt  (pid, func, param);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
  else                    return _enumerate_modules_windows(pid, func, param);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
struct _modinfo {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
   address addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
   char*   full_path;   // point to a char buffer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
   int     buflen;      // size of the buffer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
   address base_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
static int _locate_module_by_addr(int pid, char * mod_fname, address base_addr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
                                  unsigned size, void * param) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
   struct _modinfo *pmod = (struct _modinfo *)param;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
   if (!pmod) return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
   if (base_addr     <= pmod->addr &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
       base_addr+size > pmod->addr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
     // if a buffer is provided, copy path name to the buffer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
     if (pmod->full_path) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
       jio_snprintf(pmod->full_path, pmod->buflen, "%s", mod_fname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
     pmod->base_addr = base_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
     return 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
   return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
bool os::dll_address_to_library_name(address addr, char* buf,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
                                     int buflen, int* offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
// NOTE: the reason we don't use SymGetModuleInfo() is it doesn't always
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
//       return the full path to the DLL file, sometimes it returns path
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
//       to the corresponding PDB file (debug info); sometimes it only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
//       returns partial path, which makes life painful.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
   struct _modinfo mi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
   mi.addr      = addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1226
   mi.full_path = buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1227
   mi.buflen    = buflen;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1228
   int pid = os::current_process_id();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
   if (enumerate_modules(pid, _locate_module_by_addr, (void *)&mi)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
      // buf already contains path name
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
      if (offset) *offset = addr - mi.base_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
   } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
      if (buf) buf[0] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
      if (offset) *offset = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
bool os::dll_address_to_function_name(address addr, char *buf,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
                                      int buflen, int *offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
  // Unimplemented on Windows - in order to use SymGetSymFromAddr(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
  // we need to initialize imagehlp/dbghelp, then load symbol table
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
  // for every module. That's too much work to do after a fatal error.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
  // For an example on how to implement this function, see 1.4.2.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
  if (offset)  *offset  = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1247
  if (buf) buf[0] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1248
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1251
// save the start and end address of jvm.dll into param[0] and param[1]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1252
static int _locate_jvm_dll(int pid, char* mod_fname, address base_addr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1253
                    unsigned size, void * param) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1254
   if (!param) return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1255
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1256
   if (base_addr     <= (address)_locate_jvm_dll &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1257
       base_addr+size > (address)_locate_jvm_dll) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1258
         ((address*)param)[0] = base_addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1259
         ((address*)param)[1] = base_addr + size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1260
         return 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1261
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1262
   return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1263
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1264
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1265
address vm_lib_location[2];    // start and end address of jvm.dll
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1266
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1267
// check if addr is inside jvm.dll
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1268
bool os::address_is_in_vm(address addr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1269
  if (!vm_lib_location[0] || !vm_lib_location[1]) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1270
    int pid = os::current_process_id();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1271
    if (!enumerate_modules(pid, _locate_jvm_dll, (void *)vm_lib_location)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1272
      assert(false, "Can't find jvm module.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1273
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1274
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1275
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1276
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1277
  return (vm_lib_location[0] <= addr) && (addr < vm_lib_location[1]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1278
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1279
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1280
// print module info; param is outputStream*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1281
static int _print_module(int pid, char* fname, address base,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1282
                         unsigned size, void* param) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1283
   if (!param) return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1284
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1285
   outputStream* st = (outputStream*)param;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1286
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1287
   address end_addr = base + size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1288
   st->print(PTR_FORMAT " - " PTR_FORMAT " \t%s\n", base, end_addr, fname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1289
   return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1290
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1291
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1292
// Loads .dll/.so and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1293
// in case of error it checks if .dll/.so was built for the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1294
// same architecture as Hotspot is running on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1295
void * os::dll_load(const char *name, char *ebuf, int ebuflen)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1296
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1297
  void * result = LoadLibrary(name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1298
  if (result != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1299
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1300
    return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1301
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1302
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1303
  long errcode = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1304
  if (errcode == ERROR_MOD_NOT_FOUND) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1305
    strncpy(ebuf, "Can't find dependent libraries", ebuflen-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1306
    ebuf[ebuflen-1]='\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1307
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1308
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1309
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1310
  // Parsing dll below
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1311
  // If we can read dll-info and find that dll was built
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1312
  // for an architecture other than Hotspot is running in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1313
  // - then print to buffer "DLL was built for a different architecture"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1314
  // else call getLastErrorString to obtain system error message
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1315
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1316
  // Read system error message into ebuf
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1317
  // It may or may not be overwritten below (in the for loop and just above)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1318
  getLastErrorString(ebuf, (size_t) ebuflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1319
  ebuf[ebuflen-1]='\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1320
  int file_descriptor=::open(name, O_RDONLY | O_BINARY, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1321
  if (file_descriptor<0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1322
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1323
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1326
  uint32_t signature_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1327
  uint16_t lib_arch=0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1328
  bool failed_to_get_lib_arch=
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1329
  (
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1330
    //Go to position 3c in the dll
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1331
    (os::seek_to_file_offset(file_descriptor,IMAGE_FILE_PTR_TO_SIGNATURE)<0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1332
    ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1333
    // Read loacation of signature
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1334
    (sizeof(signature_offset)!=
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1335
      (os::read(file_descriptor, (void*)&signature_offset,sizeof(signature_offset))))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1336
    ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1337
    //Go to COFF File Header in dll
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1338
    //that is located after"signature" (4 bytes long)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1339
    (os::seek_to_file_offset(file_descriptor,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1340
      signature_offset+IMAGE_FILE_SIGNATURE_LENGTH)<0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1341
    ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1342
    //Read field that contains code of architecture
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1343
    // that dll was build for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1344
    (sizeof(lib_arch)!=
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1345
      (os::read(file_descriptor, (void*)&lib_arch,sizeof(lib_arch))))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1346
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1347
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1348
  ::close(file_descriptor);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1349
  if (failed_to_get_lib_arch)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1350
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1351
    // file i/o error - report getLastErrorString(...) msg
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1352
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1353
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1354
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1355
  typedef struct
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
    uint16_t arch_code;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1358
    char* arch_name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1359
  } arch_t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1360
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1361
  static const arch_t arch_array[]={
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1362
    {IMAGE_FILE_MACHINE_I386,      (char*)"IA 32"},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1363
    {IMAGE_FILE_MACHINE_AMD64,     (char*)"AMD 64"},
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1364
    {IMAGE_FILE_MACHINE_IA64,      (char*)"IA 64"}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1365
  };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1366
  #if   (defined _M_IA64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1367
    static const uint16_t running_arch=IMAGE_FILE_MACHINE_IA64;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1368
  #elif (defined _M_AMD64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1369
    static const uint16_t running_arch=IMAGE_FILE_MACHINE_AMD64;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1370
  #elif (defined _M_IX86)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1371
    static const uint16_t running_arch=IMAGE_FILE_MACHINE_I386;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1372
  #else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1373
    #error Method os::dll_load requires that one of following \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1374
           is defined :_M_IA64,_M_AMD64 or _M_IX86
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1375
  #endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1376
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1377
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1378
  // Obtain a string for printf operation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1379
  // lib_arch_str shall contain string what platform this .dll was built for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1380
  // running_arch_str shall string contain what platform Hotspot was built for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1381
  char *running_arch_str=NULL,*lib_arch_str=NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
  for (unsigned int i=0;i<ARRAY_SIZE(arch_array);i++)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1383
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1384
    if (lib_arch==arch_array[i].arch_code)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1385
      lib_arch_str=arch_array[i].arch_name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1386
    if (running_arch==arch_array[i].arch_code)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1387
      running_arch_str=arch_array[i].arch_name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1388
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1389
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1390
  assert(running_arch_str,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1391
    "Didn't find runing architecture code in arch_array");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1392
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1393
  // If the architure is right
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1394
  // but some other error took place - report getLastErrorString(...) msg
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1395
  if (lib_arch == running_arch)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1396
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1397
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1398
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1399
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1400
  if (lib_arch_str!=NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1401
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1402
    ::_snprintf(ebuf, ebuflen-1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1403
      "Can't load %s-bit .dll on a %s-bit platform",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1404
      lib_arch_str,running_arch_str);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1405
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1406
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1407
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1408
    // don't know what architecture this dll was build for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
    ::_snprintf(ebuf, ebuflen-1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
      "Can't load this .dll (machine code=0x%x) on a %s-bit platform",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1411
      lib_arch,running_arch_str);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1412
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1413
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1414
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1415
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1416
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1417
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1418
void os::print_dll_info(outputStream *st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1419
   int pid = os::current_process_id();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1420
   st->print_cr("Dynamic libraries:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1421
   enumerate_modules(pid, _print_module, (void *)st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1422
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1423
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1424
void os::print_os_info(outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1425
   st->print("OS:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1426
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1427
   OSVERSIONINFOEX osvi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1428
   ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1429
   osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1430
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1431
   if (!GetVersionEx((OSVERSIONINFO *)&osvi)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1432
      st->print_cr("N/A");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1433
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1434
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1435
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1436
   int os_vers = osvi.dwMajorVersion * 1000 + osvi.dwMinorVersion;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1437
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1438
   if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1439
     switch (os_vers) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1440
       case 3051: st->print(" Windows NT 3.51"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1441
       case 4000: st->print(" Windows NT 4.0"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1442
       case 5000: st->print(" Windows 2000"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1443
       case 5001: st->print(" Windows XP"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1444
       case 5002: st->print(" Windows Server 2003 family"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1445
       case 6000: st->print(" Windows Vista"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1446
       default: // future windows, print out its major and minor versions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1447
                st->print(" Windows NT %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1448
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1449
   } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1450
     switch (os_vers) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1451
       case 4000: st->print(" Windows 95"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1452
       case 4010: st->print(" Windows 98"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1453
       case 4090: st->print(" Windows Me"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
       default: // future windows, print out its major and minor versions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1455
                st->print(" Windows %d.%d", osvi.dwMajorVersion, osvi.dwMinorVersion);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1456
     }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1457
   }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1458
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1459
   st->print(" Build %d", osvi.dwBuildNumber);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1460
   st->print(" %s", osvi.szCSDVersion);           // service pack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
   st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1462
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1463
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1464
void os::print_memory_info(outputStream* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1465
  st->print("Memory:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1466
  st->print(" %dk page", os::vm_page_size()>>10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
  // FIXME: GlobalMemoryStatus() may return incorrect value if total memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
  // is larger than 4GB
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
  MEMORYSTATUS ms;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1471
  GlobalMemoryStatus(&ms);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1472
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1473
  st->print(", physical %uk", os::physical_memory() >> 10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1474
  st->print("(%uk free)", os::available_memory() >> 10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
  st->print(", swap %uk", ms.dwTotalPageFile >> 10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
  st->print("(%uk free)", ms.dwAvailPageFile >> 10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1479
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1480
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1481
void os::print_siginfo(outputStream *st, void *siginfo) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1482
  EXCEPTION_RECORD* er = (EXCEPTION_RECORD*)siginfo;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1483
  st->print("siginfo:");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1484
  st->print(" ExceptionCode=0x%x", er->ExceptionCode);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1485
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1486
  if (er->ExceptionCode == EXCEPTION_ACCESS_VIOLATION &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1487
      er->NumberParameters >= 2) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1488
      switch (er->ExceptionInformation[0]) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1489
      case 0: st->print(", reading address"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1490
      case 1: st->print(", writing address"); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
      default: st->print(", ExceptionInformation=" INTPTR_FORMAT,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1492
                            er->ExceptionInformation[0]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1493
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1494
      st->print(" " INTPTR_FORMAT, er->ExceptionInformation[1]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1495
  } else if (er->ExceptionCode == EXCEPTION_IN_PAGE_ERROR &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
             er->NumberParameters >= 2 && UseSharedSpaces) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1497
    FileMapInfo* mapinfo = FileMapInfo::current_info();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1498
    if (mapinfo->is_in_shared_space((void*)er->ExceptionInformation[1])) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1499
      st->print("\n\nError accessing class data sharing archive."       \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1500
                " Mapped file inaccessible during execution, "          \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1501
                " possible disk/network problem.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1502
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1503
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1504
    int num = er->NumberParameters;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1505
    if (num > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1506
      st->print(", ExceptionInformation=");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1507
      for (int i = 0; i < num; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1508
        st->print(INTPTR_FORMAT " ", er->ExceptionInformation[i]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1509
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1510
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1511
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1512
  st->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1513
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1514
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
  // do nothing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1519
static char saved_jvm_path[MAX_PATH] = {0};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1520
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1521
// Find the full path to the current module, jvm.dll or jvm_g.dll
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1522
void os::jvm_path(char *buf, jint buflen) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1523
  // Error checking.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1524
  if (buflen < MAX_PATH) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1525
    assert(false, "must use a large-enough buffer");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1526
    buf[0] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1527
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1528
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1529
  // Lazy resolve the path to current module.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1530
  if (saved_jvm_path[0] != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1531
    strcpy(buf, saved_jvm_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1532
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1535
  GetModuleFileName(vm_lib_handle, buf, buflen);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1536
  strcpy(saved_jvm_path, buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1537
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1538
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1539
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1540
void os::print_jni_name_prefix_on(outputStream* st, int args_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1541
#ifndef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1542
  st->print("_");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1543
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1544
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1545
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1546
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1547
void os::print_jni_name_suffix_on(outputStream* st, int args_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1548
#ifndef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
  st->print("@%d", args_size  * sizeof(int));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
// sun.misc.Signal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
// NOTE that this is a workaround for an apparent kernel bug where if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
// a signal handler for SIGBREAK is installed then that signal handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1556
// takes priority over the console control handler for CTRL_CLOSE_EVENT.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1557
// See bug 4416763.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1558
static void (*sigbreakHandler)(int) = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1559
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1560
static void UserHandler(int sig, void *siginfo, void *context) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1561
  os::signal_notify(sig);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1562
  // We need to reinstate the signal handler each time...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1563
  os::signal(sig, (void*)UserHandler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1564
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1565
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1566
void* os::user_handler() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
  return (void*) UserHandler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1568
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
void* os::signal(int signal_number, void* handler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
  if ((signal_number == SIGBREAK) && (!ReduceSignalUsage)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1572
    void (*oldHandler)(int) = sigbreakHandler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
    sigbreakHandler = (void (*)(int)) handler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1574
    return (void*) oldHandler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1575
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1576
    return (void*)::signal(signal_number, (void (*)(int))handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1577
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1578
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1580
void os::signal_raise(int signal_number) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1581
  raise(signal_number);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1582
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1583
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1584
// The Win32 C runtime library maps all console control events other than ^C
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1585
// into SIGBREAK, which makes it impossible to distinguish ^BREAK from close,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1586
// logoff, and shutdown events.  We therefore install our own console handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1587
// that raises SIGTERM for the latter cases.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1588
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1589
static BOOL WINAPI consoleHandler(DWORD event) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1590
  switch(event) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1591
    case CTRL_C_EVENT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
      if (is_error_reported()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
        // Ctrl-C is pressed during error reporting, likely because the error
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1594
        // handler fails to abort. Let VM die immediately.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
        os::die();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1598
      os::signal_raise(SIGINT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1599
      return TRUE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1600
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1601
    case CTRL_BREAK_EVENT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
      if (sigbreakHandler != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
        (*sigbreakHandler)(SIGBREAK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
      return TRUE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
    case CTRL_CLOSE_EVENT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
    case CTRL_LOGOFF_EVENT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1609
    case CTRL_SHUTDOWN_EVENT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1610
      os::signal_raise(SIGTERM);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1611
      return TRUE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1612
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1613
    default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1614
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
  return FALSE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1617
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1618
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1619
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1620
 * The following code is moved from os.cpp for making this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1621
 * code platform specific, which it is by its very nature.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1622
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1623
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1624
// Return maximum OS signal used + 1 for internal use only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
// Used as exit signal for signal_thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
int os::sigexitnum_pd(){
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
  return NSIG;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1628
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1629
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1630
// a counter for each possible signal value, including signal_thread exit signal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1631
static volatile jint pending_signals[NSIG+1] = { 0 };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1632
static HANDLE sig_sem;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
void os::signal_init_pd() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1635
  // Initialize signal structures
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1636
  memset((void*)pending_signals, 0, sizeof(pending_signals));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1637
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1638
  sig_sem = ::CreateSemaphore(NULL, 0, NSIG+1, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1639
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1640
  // Programs embedding the VM do not want it to attempt to receive
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
  // events like CTRL_LOGOFF_EVENT, which are used to implement the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
  // shutdown hooks mechanism introduced in 1.3.  For example, when
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1643
  // the VM is run as part of a Windows NT service (i.e., a servlet
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1644
  // engine in a web server), the correct behavior is for any console
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
  // control handler to return FALSE, not TRUE, because the OS's
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1646
  // "final" handler for such events allows the process to continue if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1647
  // it is a service (while terminating it if it is not a service).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1648
  // To make this behavior uniform and the mechanism simpler, we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1649
  // completely disable the VM's usage of these console events if -Xrs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1650
  // (=ReduceSignalUsage) is specified.  This means, for example, that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1651
  // the CTRL-BREAK thread dump mechanism is also disabled in this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1652
  // case.  See bugs 4323062, 4345157, and related bugs.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1653
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1654
  if (!ReduceSignalUsage) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1655
    // Add a CTRL-C handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1656
    SetConsoleCtrlHandler(consoleHandler, TRUE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1657
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1658
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1659
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1660
void os::signal_notify(int signal_number) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1661
  BOOL ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1662
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
  Atomic::inc(&pending_signals[signal_number]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
  ret = ::ReleaseSemaphore(sig_sem, 1, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1665
  assert(ret != 0, "ReleaseSemaphore() failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1666
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1667
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1668
static int check_pending_signals(bool wait_for_signal) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1669
  DWORD ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1670
  while (true) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1671
    for (int i = 0; i < NSIG + 1; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1672
      jint n = pending_signals[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1673
      if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1674
        return i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1675
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1676
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1677
    if (!wait_for_signal) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1678
      return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1679
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1680
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1681
    JavaThread *thread = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1682
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
    ThreadBlockInVM tbivm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
    bool threadIsSuspended;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1686
    do {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1687
      thread->set_suspend_equivalent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1688
      // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1689
      ret = ::WaitForSingleObject(sig_sem, INFINITE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1690
      assert(ret == WAIT_OBJECT_0, "WaitForSingleObject() failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1691
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1692
      // were we externally suspended while we were waiting?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1693
      threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1694
      if (threadIsSuspended) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1695
        //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1696
        // The semaphore has been incremented, but while we were waiting
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1697
        // another thread suspended us. We don't want to continue running
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1698
        // while suspended because that would surprise the thread that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1699
        // suspended us.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1700
        //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1701
        ret = ::ReleaseSemaphore(sig_sem, 1, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1702
        assert(ret != 0, "ReleaseSemaphore() failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1703
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1704
        thread->java_suspend_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1705
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1706
    } while (threadIsSuspended);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1707
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1708
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1709
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1710
int os::signal_lookup() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1711
  return check_pending_signals(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1712
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1714
int os::signal_wait() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1715
  return check_pending_signals(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1716
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1717
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1718
// Implicit OS exception handling
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
LONG Handle_Exception(struct _EXCEPTION_POINTERS* exceptionInfo, address handler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1721
  JavaThread* thread = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
  // Save pc in thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1723
#ifdef _M_IA64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
  thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->StIIP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1725
  // Set pc to handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1726
  exceptionInfo->ContextRecord->StIIP = (DWORD64)handler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
#elif _M_AMD64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
  thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->Rip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
  // Set pc to handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
  exceptionInfo->ContextRecord->Rip = (DWORD64)handler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
  thread->set_saved_exception_pc((address)exceptionInfo->ContextRecord->Eip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1733
  // Set pc to handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1734
  exceptionInfo->ContextRecord->Eip = (LONG)handler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1736
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
  // Continue the execution
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1738
  return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1742
// Used for PostMortemDump
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1743
extern "C" void safepoints();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
extern "C" void find(int x);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
extern "C" void events();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
// According to Windows API documentation, an illegal instruction sequence should generate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1748
// the 0xC000001C exception code. However, real world experience shows that occasionnaly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
// the execution of an illegal instruction can generate the exception code 0xC000001E. This
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
// seems to be an undocumented feature of Win NT 4.0 (and probably other Windows systems).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1751
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
#define EXCEPTION_ILLEGAL_INSTRUCTION_2 0xC000001E
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
// From "Execution Protection in the Windows Operating System" draft 0.35
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
// Once a system header becomes available, the "real" define should be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
// included or copied here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
#define EXCEPTION_INFO_EXEC_VIOLATION 0x08
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
#define def_excpt(val) #val, val
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
struct siglabel {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
  char *name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1763
  int   number;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1764
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1765
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1766
struct siglabel exceptlabels[] = {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1767
    def_excpt(EXCEPTION_ACCESS_VIOLATION),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1768
    def_excpt(EXCEPTION_DATATYPE_MISALIGNMENT),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1769
    def_excpt(EXCEPTION_BREAKPOINT),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1770
    def_excpt(EXCEPTION_SINGLE_STEP),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1771
    def_excpt(EXCEPTION_ARRAY_BOUNDS_EXCEEDED),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1772
    def_excpt(EXCEPTION_FLT_DENORMAL_OPERAND),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1773
    def_excpt(EXCEPTION_FLT_DIVIDE_BY_ZERO),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1774
    def_excpt(EXCEPTION_FLT_INEXACT_RESULT),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1775
    def_excpt(EXCEPTION_FLT_INVALID_OPERATION),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1776
    def_excpt(EXCEPTION_FLT_OVERFLOW),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1777
    def_excpt(EXCEPTION_FLT_STACK_CHECK),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1778
    def_excpt(EXCEPTION_FLT_UNDERFLOW),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1779
    def_excpt(EXCEPTION_INT_DIVIDE_BY_ZERO),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1780
    def_excpt(EXCEPTION_INT_OVERFLOW),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1781
    def_excpt(EXCEPTION_PRIV_INSTRUCTION),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1782
    def_excpt(EXCEPTION_IN_PAGE_ERROR),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1783
    def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1784
    def_excpt(EXCEPTION_ILLEGAL_INSTRUCTION_2),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1785
    def_excpt(EXCEPTION_NONCONTINUABLE_EXCEPTION),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1786
    def_excpt(EXCEPTION_STACK_OVERFLOW),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1787
    def_excpt(EXCEPTION_INVALID_DISPOSITION),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1788
    def_excpt(EXCEPTION_GUARD_PAGE),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1789
    def_excpt(EXCEPTION_INVALID_HANDLE),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1790
    NULL, 0
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1791
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1792
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1793
const char* os::exception_name(int exception_code, char *buf, size_t size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1794
  for (int i = 0; exceptlabels[i].name != NULL; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1795
    if (exceptlabels[i].number == exception_code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1796
       jio_snprintf(buf, size, "%s", exceptlabels[i].name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1797
       return buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1798
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1799
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1802
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1803
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1804
//-----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1805
LONG Handle_IDiv_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1806
  // handle exception caused by idiv; should only happen for -MinInt/-1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1807
  // (division by zero is handled explicitly)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1808
#ifdef _M_IA64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1809
  assert(0, "Fix Handle_IDiv_Exception");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1810
#elif _M_AMD64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1811
  PCONTEXT ctx = exceptionInfo->ContextRecord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1812
  address pc = (address)ctx->Rip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
  NOT_PRODUCT(Events::log("idiv overflow exception at " INTPTR_FORMAT , pc));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
  assert(pc[0] == 0xF7, "not an idiv opcode");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
  assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1816
  assert(ctx->Rax == min_jint, "unexpected idiv exception");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1817
  // set correct result values and continue after idiv instruction
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1818
  ctx->Rip = (DWORD)pc + 2;        // idiv reg, reg  is 2 bytes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
  ctx->Rax = (DWORD)min_jint;      // result
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1820
  ctx->Rdx = (DWORD)0;             // remainder
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
  // Continue the execution
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1823
  PCONTEXT ctx = exceptionInfo->ContextRecord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1824
  address pc = (address)ctx->Eip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
  NOT_PRODUCT(Events::log("idiv overflow exception at " INTPTR_FORMAT , pc));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
  assert(pc[0] == 0xF7, "not an idiv opcode");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1827
  assert((pc[1] & ~0x7) == 0xF8, "cannot handle non-register operands");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1828
  assert(ctx->Eax == min_jint, "unexpected idiv exception");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
  // set correct result values and continue after idiv instruction
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
  ctx->Eip = (DWORD)pc + 2;        // idiv reg, reg  is 2 bytes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
  ctx->Eax = (DWORD)min_jint;      // result
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
  ctx->Edx = (DWORD)0;             // remainder
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
  // Continue the execution
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
  return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
#ifndef  _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1839
//-----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
LONG WINAPI Handle_FLT_Exception(struct _EXCEPTION_POINTERS* exceptionInfo) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
  // handle exception caused by native mothod modifying control word
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
  PCONTEXT ctx = exceptionInfo->ContextRecord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
  DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
  switch (exception_code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
    case EXCEPTION_FLT_DENORMAL_OPERAND:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1847
    case EXCEPTION_FLT_DIVIDE_BY_ZERO:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
    case EXCEPTION_FLT_INEXACT_RESULT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
    case EXCEPTION_FLT_INVALID_OPERATION:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
    case EXCEPTION_FLT_OVERFLOW:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
    case EXCEPTION_FLT_STACK_CHECK:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
    case EXCEPTION_FLT_UNDERFLOW:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
      jint fp_control_word = (* (jint*) StubRoutines::addr_fpu_cntrl_wrd_std());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1854
      if (fp_control_word != ctx->FloatSave.ControlWord) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1855
        // Restore FPCW and mask out FLT exceptions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1856
        ctx->FloatSave.ControlWord = fp_control_word | 0xffffffc0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1857
        // Mask out pending FLT exceptions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1858
        ctx->FloatSave.StatusWord &=  0xffffff00;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1859
        return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1860
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1861
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1862
  return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1863
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1864
#else //_WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1865
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1866
  On Windows, the mxcsr control bits are non-volatile across calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1867
  See also CR 6192333
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1868
  If EXCEPTION_FLT_* happened after some native method modified
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1869
  mxcsr - it is not a jvm fault.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1870
  However should we decide to restore of mxcsr after a faulty
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1871
  native method we can uncomment following code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1872
      jint MxCsr = INITIAL_MXCSR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
        // we can't use StubRoutines::addr_mxcsr_std()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
        // because in Win64 mxcsr is not saved there
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
      if (MxCsr != ctx->MxCsr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
        ctx->MxCsr = MxCsr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
        return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1878
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1879
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
*/
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
#endif //_WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1882
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1883
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1884
// Fatal error reporting is single threaded so we can make this a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
// static and preallocated.  If it's more than MAX_PATH silently ignore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1886
// it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1887
static char saved_error_file[MAX_PATH] = {0};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
void os::set_error_file(const char *logfile) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
  if (strlen(logfile) <= MAX_PATH) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1891
    strncpy(saved_error_file, logfile, MAX_PATH);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1892
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1893
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1894
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1895
static inline void report_error(Thread* t, DWORD exception_code,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1896
                                address addr, void* siginfo, void* context) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1897
  VMError err(t, exception_code, addr, siginfo, context);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1898
  err.report_and_die();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1899
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1900
  // If UseOsErrorReporting, this will return here and save the error file
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1901
  // somewhere where we can find it in the minidump.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1902
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1903
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1904
//-----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1905
LONG WINAPI topLevelExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1906
  if (InterceptOSException) return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
  DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1908
#ifdef _M_IA64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1909
  address pc = (address) exceptionInfo->ContextRecord->StIIP;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1910
#elif _M_AMD64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1911
  address pc = (address) exceptionInfo->ContextRecord->Rip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1912
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1913
  address pc = (address) exceptionInfo->ContextRecord->Eip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1914
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1915
  Thread* t = ThreadLocalStorage::get_thread_slow();          // slow & steady
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1916
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1917
#ifndef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1918
  // Execution protection violation - win32 running on AMD64 only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1919
  // Handled first to avoid misdiagnosis as a "normal" access violation;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1920
  // This is safe to do because we have a new/unique ExceptionInformation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1921
  // code for this condition.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1922
  if (exception_code == EXCEPTION_ACCESS_VIOLATION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1923
    PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1924
    int exception_subcode = (int) exceptionRecord->ExceptionInformation[0];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1925
    address addr = (address) exceptionRecord->ExceptionInformation[1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1926
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
    if (exception_subcode == EXCEPTION_INFO_EXEC_VIOLATION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1928
      int page_size = os::vm_page_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1929
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1930
      // Make sure the pc and the faulting address are sane.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1931
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1932
      // If an instruction spans a page boundary, and the page containing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1933
      // the beginning of the instruction is executable but the following
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1934
      // page is not, the pc and the faulting address might be slightly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1935
      // different - we still want to unguard the 2nd page in this case.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1936
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1937
      // 15 bytes seems to be a (very) safe value for max instruction size.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
      bool pc_is_near_addr =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1939
        (pointer_delta((void*) addr, (void*) pc, sizeof(char)) < 15);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
      bool instr_spans_page_boundary =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
        (align_size_down((intptr_t) pc ^ (intptr_t) addr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1942
                         (intptr_t) page_size) > 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1943
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1944
      if (pc == addr || (pc_is_near_addr && instr_spans_page_boundary)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1945
        static volatile address last_addr =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1946
          (address) os::non_memory_address_word();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1947
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1948
        // In conservative mode, don't unguard unless the address is in the VM
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1949
        if (UnguardOnExecutionViolation > 0 && addr != last_addr &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1950
            (UnguardOnExecutionViolation > 1 || os::address_is_in_vm(addr))) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1951
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1952
          // Unguard and retry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1953
          address page_start =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1954
            (address) align_size_down((intptr_t) addr, (intptr_t) page_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1955
          bool res = os::unguard_memory((char*) page_start, page_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1956
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1957
          if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1958
            char buf[256];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1959
            jio_snprintf(buf, sizeof(buf), "Execution protection violation "
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1960
                         "at " INTPTR_FORMAT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1961
                         ", unguarding " INTPTR_FORMAT ": %s", addr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1962
                         page_start, (res ? "success" : strerror(errno)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1963
            tty->print_raw_cr(buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1964
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1965
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1966
          // Set last_addr so if we fault again at the same address, we don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1967
          // end up in an endless loop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1968
          //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1969
          // There are two potential complications here.  Two threads trapping
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1970
          // at the same address at the same time could cause one of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1971
          // threads to think it already unguarded, and abort the VM.  Likely
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1972
          // very rare.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1973
          //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1974
          // The other race involves two threads alternately trapping at
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1975
          // different addresses and failing to unguard the page, resulting in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1976
          // an endless loop.  This condition is probably even more unlikely
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1977
          // than the first.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1978
          //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1979
          // Although both cases could be avoided by using locks or thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1980
          // local last_addr, these solutions are unnecessary complication:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1981
          // this handler is a best-effort safety net, not a complete solution.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1982
          // It is disabled by default and should only be used as a workaround
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1983
          // in case we missed any no-execute-unsafe VM code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1984
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1985
          last_addr = addr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1986
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1987
          return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1988
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1989
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1990
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1991
      // Last unguard failed or not unguarding
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1992
      tty->print_raw_cr("Execution protection violation");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1993
      report_error(t, exception_code, addr, exceptionInfo->ExceptionRecord,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1994
                   exceptionInfo->ContextRecord);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1995
      return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1996
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1997
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1998
#endif // _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1999
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2000
  // Check to see if we caught the safepoint code in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2001
  // process of write protecting the memory serialization page.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2002
  // It write enables the page immediately after protecting it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
  // so just return.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
  if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
    JavaThread* thread = (JavaThread*) t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2006
    PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2007
    address addr = (address) exceptionRecord->ExceptionInformation[1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2008
    if ( os::is_memory_serialize_page(thread, addr) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2009
      // Block current thread until the memory serialize page permission restored.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2010
      os::block_on_serialize_page_trap();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2011
      return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2012
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2013
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2014
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2015
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2016
  if (t != NULL && t->is_Java_thread()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2017
    JavaThread* thread = (JavaThread*) t;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2018
    bool in_java = thread->thread_state() == _thread_in_Java;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2019
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2020
    // Handle potential stack overflows up front.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2021
    if (exception_code == EXCEPTION_STACK_OVERFLOW) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2022
      if (os::uses_stack_guard_pages()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2023
#ifdef _M_IA64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2024
        //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
        // If it's a legal stack address continue, Windows will map it in.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2026
        //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2027
        PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2028
        address addr = (address) exceptionRecord->ExceptionInformation[1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2029
        if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2030
          return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2031
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2032
        // The register save area is the same size as the memory stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2033
        // and starts at the page just above the start of the memory stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2034
        // If we get a fault in this area, we've run out of register
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2035
        // stack.  If we are in java, try throwing a stack overflow exception.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2036
        if (addr > thread->stack_base() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2037
                      addr <= (thread->stack_base()+thread->stack_size()) ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2038
          char buf[256];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2039
          jio_snprintf(buf, sizeof(buf),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2040
                       "Register stack overflow, addr:%p, stack_base:%p\n",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2041
                       addr, thread->stack_base() );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2042
          tty->print_raw_cr(buf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2043
          // If not in java code, return and hope for the best.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2044
          return in_java ? Handle_Exception(exceptionInfo,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2045
            SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2046
            :  EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2047
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2048
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2049
        if (thread->stack_yellow_zone_enabled()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2050
          // Yellow zone violation.  The o/s has unprotected the first yellow
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2051
          // zone page for us.  Note:  must call disable_stack_yellow_zone to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2052
          // update the enabled status, even if the zone contains only one page.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2053
          thread->disable_stack_yellow_zone();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2054
          // If not in java code, return and hope for the best.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2055
          return in_java ? Handle_Exception(exceptionInfo,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2056
            SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2057
            :  EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2058
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2059
          // Fatal red zone violation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2060
          thread->disable_stack_red_zone();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2061
          tty->print_raw_cr("An unrecoverable stack overflow has occurred.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2062
          report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2063
                       exceptionInfo->ContextRecord);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2064
          return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2065
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2066
      } else if (in_java) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2067
        // JVM-managed guard pages cannot be used on win95/98.  The o/s provides
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2068
        // a one-time-only guard page, which it has released to us.  The next
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2069
        // stack overflow on this thread will result in an ACCESS_VIOLATION.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2070
        return Handle_Exception(exceptionInfo,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2071
          SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2072
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
        // Can only return and hope for the best.  Further stack growth will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
        // result in an ACCESS_VIOLATION.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2075
        return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2076
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2077
    } else if (exception_code == EXCEPTION_ACCESS_VIOLATION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2078
      // Either stack overflow or null pointer exception.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2079
      if (in_java) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2080
        PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2081
        address addr = (address) exceptionRecord->ExceptionInformation[1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2082
        address stack_end = thread->stack_base() - thread->stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
        if (addr < stack_end && addr >= stack_end - os::vm_page_size()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2084
          // Stack overflow.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
          assert(!os::uses_stack_guard_pages(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2086
            "should be caught by red zone code above.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2087
          return Handle_Exception(exceptionInfo,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
            SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2089
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2090
        //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2091
        // Check for safepoint polling and implicit null
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2092
        // We only expect null pointers in the stubs (vtable)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
        // the rest are checked explicitly now.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2094
        //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2095
        CodeBlob* cb = CodeCache::find_blob(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2096
        if (cb != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2097
          if (os::is_poll_address(addr)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
            address stub = SharedRuntime::get_poll_stub(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2099
            return Handle_Exception(exceptionInfo, stub);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2100
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2101
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2102
        {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2103
#ifdef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2104
          //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2105
          // If it's a legal stack address map the entire region in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2106
          //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2107
          PEXCEPTION_RECORD exceptionRecord = exceptionInfo->ExceptionRecord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2108
          address addr = (address) exceptionRecord->ExceptionInformation[1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2109
          if (addr > thread->stack_yellow_zone_base() && addr < thread->stack_base() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2110
                  addr = (address)((uintptr_t)addr &
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2111
                         (~((uintptr_t)os::vm_page_size() - (uintptr_t)1)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2112
                  os::commit_memory( (char *)addr, thread->stack_base() - addr );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2113
                  return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2114
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2115
          else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2116
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2117
          {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
            // Null pointer exception.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
#ifdef _M_IA64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2120
            // We catch register stack overflows in compiled code by doing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2121
            // an explicit compare and executing a st8(G0, G0) if the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2122
            // BSP enters into our guard area.  We test for the overflow
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2123
            // condition and fall into the normal null pointer exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2124
            // code if BSP hasn't overflowed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2125
            if ( in_java ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2126
              if(thread->register_stack_overflow()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2127
                assert((address)exceptionInfo->ContextRecord->IntS3 ==
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2128
                                thread->register_stack_limit(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2129
                               "GR7 doesn't contain register_stack_limit");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2130
                // Disable the yellow zone which sets the state that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2131
                // we've got a stack overflow problem.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2132
                if (thread->stack_yellow_zone_enabled()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2133
                  thread->disable_stack_yellow_zone();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2134
                }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2135
                // Give us some room to process the exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2136
                thread->disable_register_stack_guard();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2137
                // Update GR7 with the new limit so we can continue running
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2138
                // compiled code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2139
                exceptionInfo->ContextRecord->IntS3 =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2140
                               (ULONGLONG)thread->register_stack_limit();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2141
                return Handle_Exception(exceptionInfo,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2142
                       SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
              } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
                //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2145
                // Check for implicit null
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2146
                // We only expect null pointers in the stubs (vtable)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2147
                // the rest are checked explicitly now.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2148
                //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2149
                CodeBlob* cb = CodeCache::find_blob(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2150
                if (cb != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2151
                  if (VtableStubs::stub_containing(pc) != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2152
                    if (((uintptr_t)addr) < os::vm_page_size() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2153
                      // an access to the first page of VM--assume it is a null pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2154
                      return Handle_Exception(exceptionInfo,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2155
                        SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2156
                    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2157
                  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2158
                }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2159
              }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2160
            } // in_java
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2161
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2162
            // IA64 doesn't use implicit null checking yet. So we shouldn't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2163
            // get here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2164
            tty->print_raw_cr("Access violation, possible null pointer exception");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2165
            report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2166
                         exceptionInfo->ContextRecord);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2167
            return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2168
#else /* !IA64 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2169
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2170
            // Windows 98 reports faulting addresses incorrectly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2171
            if (!MacroAssembler::needs_explicit_null_check((intptr_t)addr) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2172
                !os::win32::is_nt()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2173
              return Handle_Exception(exceptionInfo,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2174
                  SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2175
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2176
            report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2177
                         exceptionInfo->ContextRecord);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2178
            return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2179
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2180
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2181
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2182
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2183
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2184
#ifdef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2185
      // Special care for fast JNI field accessors.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2186
      // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
      // in and the heap gets shrunk before the field access.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
      if (exception_code == EXCEPTION_ACCESS_VIOLATION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2189
        address addr = JNI_FastGetField::find_slowcase_pc(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2190
        if (addr != (address)-1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2191
          return Handle_Exception(exceptionInfo, addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2192
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2193
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2194
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2195
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2196
#ifdef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2197
      // Windows will sometimes generate an access violation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2198
      // when we call malloc.  Since we use VectoredExceptions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2199
      // on 64 bit platforms, we see this exception.  We must
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2200
      // pass this exception on so Windows can recover.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2201
      // We check to see if the pc of the fault is in NTDLL.DLL
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
      // if so, we pass control on to Windows for handling.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
      if (UseVectoredExceptions && _addr_in_ntdll(pc)) return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2205
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
      // Stack overflow or null pointer exception in native code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
      report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2208
                   exceptionInfo->ContextRecord);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2209
      return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2210
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2211
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2212
    if (in_java) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2213
      switch (exception_code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
      case EXCEPTION_INT_DIVIDE_BY_ZERO:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2215
        return Handle_Exception(exceptionInfo, SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2216
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2217
      case EXCEPTION_INT_OVERFLOW:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2218
        return Handle_IDiv_Exception(exceptionInfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2219
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2220
      } // switch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2221
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2222
#ifndef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2223
    if ((thread->thread_state() == _thread_in_Java) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2224
        (thread->thread_state() == _thread_in_native) )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2225
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2226
      LONG result=Handle_FLT_Exception(exceptionInfo);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2227
      if (result==EXCEPTION_CONTINUE_EXECUTION) return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2228
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
#endif //_WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
  if (exception_code != EXCEPTION_BREAKPOINT) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2233
#ifndef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
    report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2235
                 exceptionInfo->ContextRecord);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2236
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2237
    // Itanium Windows uses a VectoredExceptionHandler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2238
    // Which means that C++ programatic exception handlers (try/except)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2239
    // will get here.  Continue the search for the right except block if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2240
    // the exception code is not a fatal code.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2241
    switch ( exception_code ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2242
      case EXCEPTION_ACCESS_VIOLATION:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
      case EXCEPTION_STACK_OVERFLOW:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
      case EXCEPTION_ILLEGAL_INSTRUCTION:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
      case EXCEPTION_ILLEGAL_INSTRUCTION_2:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
      case EXCEPTION_INT_OVERFLOW:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
      case EXCEPTION_INT_DIVIDE_BY_ZERO:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
      {  report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2249
                       exceptionInfo->ContextRecord);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2251
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2252
      default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2253
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2254
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2255
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2256
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2257
  return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2258
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2259
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2260
#ifndef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2261
// Special care for fast JNI accessors.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2262
// jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2263
// the heap gets shrunk before the field access.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2264
// Need to install our own structured exception handler since native code may
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2265
// install its own.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2266
LONG WINAPI fastJNIAccessorExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2267
  DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2268
  if (exception_code == EXCEPTION_ACCESS_VIOLATION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2269
    address pc = (address) exceptionInfo->ContextRecord->Eip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2270
    address addr = JNI_FastGetField::find_slowcase_pc(pc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2271
    if (addr != (address)-1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2272
      return Handle_Exception(exceptionInfo, addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2274
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2275
  return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2277
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2278
#define DEFINE_FAST_GETFIELD(Return,Fieldname,Result) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2279
Return JNICALL jni_fast_Get##Result##Field_wrapper(JNIEnv *env, jobject obj, jfieldID fieldID) { \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2280
  __try { \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2281
    return (*JNI_FastGetField::jni_fast_Get##Result##Field_fp)(env, obj, fieldID); \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2282
  } __except(fastJNIAccessorExceptionFilter((_EXCEPTION_POINTERS*)_exception_info())) { \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2283
  } \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2284
  return 0; \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2285
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2286
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2287
DEFINE_FAST_GETFIELD(jboolean, bool,   Boolean)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2288
DEFINE_FAST_GETFIELD(jbyte,    byte,   Byte)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2289
DEFINE_FAST_GETFIELD(jchar,    char,   Char)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2290
DEFINE_FAST_GETFIELD(jshort,   short,  Short)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2291
DEFINE_FAST_GETFIELD(jint,     int,    Int)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2292
DEFINE_FAST_GETFIELD(jlong,    long,   Long)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2293
DEFINE_FAST_GETFIELD(jfloat,   float,  Float)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2294
DEFINE_FAST_GETFIELD(jdouble,  double, Double)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2295
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2296
address os::win32::fast_jni_accessor_wrapper(BasicType type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2297
  switch (type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2298
    case T_BOOLEAN: return (address)jni_fast_GetBooleanField_wrapper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2299
    case T_BYTE:    return (address)jni_fast_GetByteField_wrapper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2300
    case T_CHAR:    return (address)jni_fast_GetCharField_wrapper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2301
    case T_SHORT:   return (address)jni_fast_GetShortField_wrapper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2302
    case T_INT:     return (address)jni_fast_GetIntField_wrapper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2303
    case T_LONG:    return (address)jni_fast_GetLongField_wrapper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2304
    case T_FLOAT:   return (address)jni_fast_GetFloatField_wrapper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2305
    case T_DOUBLE:  return (address)jni_fast_GetDoubleField_wrapper;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2306
    default:        ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2307
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2308
  return (address)-1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2309
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2310
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2311
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2312
// Virtual Memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2313
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2314
int os::vm_page_size() { return os::win32::vm_page_size(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2315
int os::vm_allocation_granularity() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2316
  return os::win32::vm_allocation_granularity();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2317
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2318
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2319
// Windows large page support is available on Windows 2003. In order to use
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2320
// large page memory, the administrator must first assign additional privilege
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2321
// to the user:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2322
//   + select Control Panel -> Administrative Tools -> Local Security Policy
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2323
//   + select Local Policies -> User Rights Assignment
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2324
//   + double click "Lock pages in memory", add users and/or groups
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2325
//   + reboot
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2326
// Note the above steps are needed for administrator as well, as administrators
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2327
// by default do not have the privilege to lock pages in memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2328
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2329
// Note about Windows 2003: although the API supports committing large page
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2330
// memory on a page-by-page basis and VirtualAlloc() returns success under this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2331
// scenario, I found through experiment it only uses large page if the entire
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2332
// memory region is reserved and committed in a single VirtualAlloc() call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2333
// This makes Windows large page support more or less like Solaris ISM, in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2334
// that the entire heap must be committed upfront. This probably will change
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2335
// in the future, if so the code below needs to be revisited.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2336
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2337
#ifndef MEM_LARGE_PAGES
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2338
#define MEM_LARGE_PAGES 0x20000000
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2339
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2340
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2341
// GetLargePageMinimum is only available on Windows 2003. The other functions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2342
// are available on NT but not on Windows 98/Me. We have to resolve them at
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2343
// runtime.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2344
typedef SIZE_T (WINAPI *GetLargePageMinimum_func_type) (void);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2345
typedef BOOL (WINAPI *AdjustTokenPrivileges_func_type)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2346
             (HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2347
typedef BOOL (WINAPI *OpenProcessToken_func_type) (HANDLE, DWORD, PHANDLE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2348
typedef BOOL (WINAPI *LookupPrivilegeValue_func_type) (LPCTSTR, LPCTSTR, PLUID);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2349
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2350
static GetLargePageMinimum_func_type   _GetLargePageMinimum;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2351
static AdjustTokenPrivileges_func_type _AdjustTokenPrivileges;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2352
static OpenProcessToken_func_type      _OpenProcessToken;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2353
static LookupPrivilegeValue_func_type  _LookupPrivilegeValue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2354
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2355
static HINSTANCE _kernel32;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2356
static HINSTANCE _advapi32;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2357
static HANDLE    _hProcess;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2358
static HANDLE    _hToken;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2359
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2360
static size_t _large_page_size = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2361
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2362
static bool resolve_functions_for_large_page_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2363
  _kernel32 = LoadLibrary("kernel32.dll");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2364
  if (_kernel32 == NULL) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2365
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2366
  _GetLargePageMinimum   = CAST_TO_FN_PTR(GetLargePageMinimum_func_type,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2367
                            GetProcAddress(_kernel32, "GetLargePageMinimum"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2368
  if (_GetLargePageMinimum == NULL) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2369
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2370
  _advapi32 = LoadLibrary("advapi32.dll");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2371
  if (_advapi32 == NULL) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2372
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2373
  _AdjustTokenPrivileges = CAST_TO_FN_PTR(AdjustTokenPrivileges_func_type,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2374
                            GetProcAddress(_advapi32, "AdjustTokenPrivileges"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2375
  _OpenProcessToken      = CAST_TO_FN_PTR(OpenProcessToken_func_type,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2376
                            GetProcAddress(_advapi32, "OpenProcessToken"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2377
  _LookupPrivilegeValue  = CAST_TO_FN_PTR(LookupPrivilegeValue_func_type,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2378
                            GetProcAddress(_advapi32, "LookupPrivilegeValueA"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2379
  return _AdjustTokenPrivileges != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2380
         _OpenProcessToken      != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2381
         _LookupPrivilegeValue  != NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2382
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2383
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2384
static bool request_lock_memory_privilege() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2385
  _hProcess = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2386
                                os::current_process_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2387
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2388
  LUID luid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2389
  if (_hProcess != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2390
      _OpenProcessToken(_hProcess, TOKEN_ADJUST_PRIVILEGES, &_hToken) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2391
      _LookupPrivilegeValue(NULL, "SeLockMemoryPrivilege", &luid)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2392
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2393
    TOKEN_PRIVILEGES tp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2394
    tp.PrivilegeCount = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2395
    tp.Privileges[0].Luid = luid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2396
    tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2397
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2398
    // AdjustTokenPrivileges() may return TRUE even when it couldn't change the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2399
    // privilege. Check GetLastError() too. See MSDN document.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2400
    if (_AdjustTokenPrivileges(_hToken, false, &tp, sizeof(tp), NULL, NULL) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2401
        (GetLastError() == ERROR_SUCCESS)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2402
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2403
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2404
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2405
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2406
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2407
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2408
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2409
static void cleanup_after_large_page_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2410
  _GetLargePageMinimum = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2411
  _AdjustTokenPrivileges = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2412
  _OpenProcessToken = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2413
  _LookupPrivilegeValue = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2414
  if (_kernel32) FreeLibrary(_kernel32);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2415
  _kernel32 = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2416
  if (_advapi32) FreeLibrary(_advapi32);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2417
  _advapi32 = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2418
  if (_hProcess) CloseHandle(_hProcess);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2419
  _hProcess = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2420
  if (_hToken) CloseHandle(_hToken);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2421
  _hToken = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2422
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2423
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2424
bool os::large_page_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2425
  if (!UseLargePages) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2426
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2427
  // print a warning if any large page related flag is specified on command line
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2428
  bool warn_on_failure = !FLAG_IS_DEFAULT(UseLargePages) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2429
                         !FLAG_IS_DEFAULT(LargePageSizeInBytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2430
  bool success = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2431
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2432
# define WARN(msg) if (warn_on_failure) { warning(msg); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2433
  if (resolve_functions_for_large_page_init()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2434
    if (request_lock_memory_privilege()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2435
      size_t s = _GetLargePageMinimum();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2436
      if (s) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2437
#if defined(IA32) || defined(AMD64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2438
        if (s > 4*M || LargePageSizeInBytes > 4*M) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2439
          WARN("JVM cannot use large pages bigger than 4mb.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2440
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2441
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2442
          if (LargePageSizeInBytes && LargePageSizeInBytes % s == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2443
            _large_page_size = LargePageSizeInBytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2444
          } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2445
            _large_page_size = s;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2446
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2447
          success = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2448
#if defined(IA32) || defined(AMD64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2449
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2450
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2451
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2452
        WARN("Large page is not supported by the processor.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2453
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2454
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2455
      WARN("JVM cannot use large page memory because it does not have enough privilege to lock pages in memory.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2456
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2457
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2458
    WARN("Large page is not supported by the operating system.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2459
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2460
#undef WARN
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2461
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2462
  const size_t default_page_size = (size_t) vm_page_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2463
  if (success && _large_page_size > default_page_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2464
    _page_sizes[0] = _large_page_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2465
    _page_sizes[1] = default_page_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2466
    _page_sizes[2] = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2467
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2468
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2469
  cleanup_after_large_page_init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2470
  return success;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2471
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2472
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2473
// On win32, one cannot release just a part of reserved memory, it's an
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2474
// all or nothing deal.  When we split a reservation, we must break the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2475
// reservation into two reservations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2476
void os::split_reserved_memory(char *base, size_t size, size_t split,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2477
                              bool realloc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2478
  if (size > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2479
    release_memory(base, size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2480
    if (realloc) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2481
      reserve_memory(split, base);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2482
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2483
    if (size != split) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2484
      reserve_memory(size - split, base + split);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2485
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2486
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2487
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2488
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2489
char* os::reserve_memory(size_t bytes, char* addr, size_t alignment_hint) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2490
  assert((size_t)addr % os::vm_allocation_granularity() == 0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2491
         "reserve alignment");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2492
  assert(bytes % os::vm_allocation_granularity() == 0, "reserve block size");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2493
  char* res = (char*)VirtualAlloc(addr, bytes, MEM_RESERVE,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2494
                                  PAGE_EXECUTE_READWRITE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2495
  assert(res == NULL || addr == NULL || addr == res,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2496
         "Unexpected address from reserve.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2497
  return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2498
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2499
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2500
// Reserve memory at an arbitrary address, only if that area is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2501
// available (and not reserved for something else).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2502
char* os::attempt_reserve_memory_at(size_t bytes, char* requested_addr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2503
  // Windows os::reserve_memory() fails of the requested address range is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2504
  // not avilable.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2505
  return reserve_memory(bytes, requested_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2506
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2507
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2508
size_t os::large_page_size() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2509
  return _large_page_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2510
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2511
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2512
bool os::can_commit_large_page_memory() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2513
  // Windows only uses large page memory when the entire region is reserved
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2514
  // and committed in a single VirtualAlloc() call. This may change in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2515
  // future, but with Windows 2003 it's not possible to commit on demand.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2516
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2517
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2518
252
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 235
diff changeset
  2519
bool os::can_execute_large_page_memory() {
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 235
diff changeset
  2520
  return true;
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 235
diff changeset
  2521
}
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 235
diff changeset
  2522
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2523
char* os::reserve_memory_special(size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2524
  DWORD flag = MEM_RESERVE | MEM_COMMIT | MEM_LARGE_PAGES;
252
050143a0dbfb 6642862: Code cache allocation fails with large pages after 6588638
jcoomes
parents: 235
diff changeset
  2525
  char * res = (char *)VirtualAlloc(NULL, bytes, flag, PAGE_EXECUTE_READWRITE);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2526
  return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2527
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2528
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2529
bool os::release_memory_special(char* base, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2530
  return release_memory(base, bytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2531
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2532
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2533
void os::print_statistics() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2534
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2535
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2536
bool os::commit_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2537
  if (bytes == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2538
    // Don't bother the OS with noops.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2539
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2540
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2541
  assert((size_t) addr % os::vm_page_size() == 0, "commit on page boundaries");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2542
  assert(bytes % os::vm_page_size() == 0, "commit in page-sized chunks");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2543
  // Don't attempt to print anything if the OS call fails. We're
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2544
  // probably low on resources, so the print itself may cause crashes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2545
  return VirtualAlloc(addr, bytes, MEM_COMMIT, PAGE_EXECUTE_READWRITE) != NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2546
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2547
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2548
bool os::commit_memory(char* addr, size_t size, size_t alignment_hint) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2549
  return commit_memory(addr, size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2550
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2551
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2552
bool os::uncommit_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2553
  if (bytes == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2554
    // Don't bother the OS with noops.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2555
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2556
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2557
  assert((size_t) addr % os::vm_page_size() == 0, "uncommit on page boundaries");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2558
  assert(bytes % os::vm_page_size() == 0, "uncommit in page-sized chunks");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2559
  return VirtualFree(addr, bytes, MEM_DECOMMIT) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2560
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2561
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2562
bool os::release_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2563
  return VirtualFree(addr, 0, MEM_RELEASE) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2564
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2565
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2566
bool os::protect_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2567
  DWORD old_status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2568
  return VirtualProtect(addr, bytes, PAGE_READONLY, &old_status) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2569
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2570
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2571
bool os::guard_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2572
  DWORD old_status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2573
  return VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE | PAGE_GUARD, &old_status) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2574
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2575
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2576
bool os::unguard_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2577
  DWORD old_status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2578
  return VirtualProtect(addr, bytes, PAGE_EXECUTE_READWRITE, &old_status) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2579
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2580
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2581
void os::realign_memory(char *addr, size_t bytes, size_t alignment_hint) { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2582
void os::free_memory(char *addr, size_t bytes)         { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2583
void os::numa_make_global(char *addr, size_t bytes)    { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2584
void os::numa_make_local(char *addr, size_t bytes)     { }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2585
bool os::numa_topology_changed()                       { return false; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2586
size_t os::numa_get_groups_num()                       { return 1; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2587
int os::numa_get_group_id()                            { return 0; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2588
size_t os::numa_get_leaf_groups(int *ids, size_t size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2589
  if (size > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2590
    ids[0] = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2591
    return 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2592
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2593
  return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2594
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2595
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2596
bool os::get_page_info(char *start, page_info* info) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2597
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2598
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2599
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2600
char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2601
  return end;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2602
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2603
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2604
char* os::non_memory_address_word() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2605
  // Must never look like an address returned by reserve_memory,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2606
  // even in its subfields (as defined by the CPU immediate fields,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2607
  // if the CPU splits constants across multiple instructions).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2608
  return (char*)-1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2609
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2610
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2611
#define MAX_ERROR_COUNT 100
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2612
#define SYS_THREAD_ERROR 0xffffffffUL
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2613
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2614
void os::pd_start_thread(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2615
  DWORD ret = ResumeThread(thread->osthread()->thread_handle());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2616
  // Returns previous suspend state:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2617
  // 0:  Thread was not suspended
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2618
  // 1:  Thread is running now
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2619
  // >1: Thread is still suspended.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2620
  assert(ret != SYS_THREAD_ERROR, "StartThread failed"); // should propagate back
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2621
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2622
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2623
size_t os::read(int fd, void *buf, unsigned int nBytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2624
  return ::read(fd, buf, nBytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2625
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2626
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2627
class HighResolutionInterval {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2628
  // The default timer resolution seems to be 10 milliseconds.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2629
  // (Where is this written down?)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2630
  // If someone wants to sleep for only a fraction of the default,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2631
  // then we set the timer resolution down to 1 millisecond for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2632
  // the duration of their interval.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2633
  // We carefully set the resolution back, since otherwise we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2634
  // seem to incur an overhead (3%?) that we don't need.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2635
  // CONSIDER: if ms is small, say 3, then we should run with a high resolution time.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2636
  // Buf if ms is large, say 500, or 503, we should avoid the call to timeBeginPeriod().
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2637
  // Alternatively, we could compute the relative error (503/500 = .6%) and only use
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2638
  // timeBeginPeriod() if the relative error exceeded some threshold.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2639
  // timeBeginPeriod() has been linked to problems with clock drift on win32 systems and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2640
  // to decreased efficiency related to increased timer "tick" rates.  We want to minimize
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2641
  // (a) calls to timeBeginPeriod() and timeEndPeriod() and (b) time spent with high
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2642
  // resolution timers running.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2643
private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2644
    jlong resolution;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2645
public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2646
  HighResolutionInterval(jlong ms) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2647
    resolution = ms % 10L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2648
    if (resolution != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2649
      MMRESULT result = timeBeginPeriod(1L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2650
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2651
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2652
  ~HighResolutionInterval() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2653
    if (resolution != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2654
      MMRESULT result = timeEndPeriod(1L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2655
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2656
    resolution = 0L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2657
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2658
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2659
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2660
int os::sleep(Thread* thread, jlong ms, bool interruptable) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2661
  jlong limit = (jlong) MAXDWORD;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2662
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2663
  while(ms > limit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2664
    int res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2665
    if ((res = sleep(thread, limit, interruptable)) != OS_TIMEOUT)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2666
      return res;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2667
    ms -= limit;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2668
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2669
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2670
  assert(thread == Thread::current(),  "thread consistency check");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2671
  OSThread* osthread = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2672
  OSThreadWaitState osts(osthread, false /* not Object.wait() */);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2673
  int result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2674
  if (interruptable) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2675
    assert(thread->is_Java_thread(), "must be java thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2676
    JavaThread *jt = (JavaThread *) thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2677
    ThreadBlockInVM tbivm(jt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2678
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2679
    jt->set_suspend_equivalent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2680
    // cleared by handle_special_suspend_equivalent_condition() or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2681
    // java_suspend_self() via check_and_wait_while_suspended()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2682
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2683
    HANDLE events[1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2684
    events[0] = osthread->interrupt_event();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2685
    HighResolutionInterval *phri=NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2686
    if(!ForceTimeHighResolution)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2687
      phri = new HighResolutionInterval( ms );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2688
    if (WaitForMultipleObjects(1, events, FALSE, (DWORD)ms) == WAIT_TIMEOUT) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2689
      result = OS_TIMEOUT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2690
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2691
      ResetEvent(osthread->interrupt_event());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2692
      osthread->set_interrupted(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2693
      result = OS_INTRPT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2694
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2695
    delete phri; //if it is NULL, harmless
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2696
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2697
    // were we externally suspended while we were waiting?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2698
    jt->check_and_wait_while_suspended();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2699
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2700
    assert(!thread->is_Java_thread(), "must not be java thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2701
    Sleep((long) ms);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2702
    result = OS_TIMEOUT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2703
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2704
  return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2705
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2706
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2707
// Sleep forever; naked call to OS-specific sleep; use with CAUTION
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2708
void os::infinite_sleep() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2709
  while (true) {    // sleep forever ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2710
    Sleep(100000);  // ... 100 seconds at a time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2711
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2712
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2713
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2714
typedef BOOL (WINAPI * STTSignature)(void) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2715
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2716
os::YieldResult os::NakedYield() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2717
  // Use either SwitchToThread() or Sleep(0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2718
  // Consider passing back the return value from SwitchToThread().
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2719
  // We use GetProcAddress() as ancient Win9X versions of windows doen't support SwitchToThread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2720
  // In that case we revert to Sleep(0).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2721
  static volatile STTSignature stt = (STTSignature) 1 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2722
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2723
  if (stt == ((STTSignature) 1)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2724
    stt = (STTSignature) ::GetProcAddress (LoadLibrary ("Kernel32.dll"), "SwitchToThread") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2725
    // It's OK if threads race during initialization as the operation above is idempotent.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2726
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2727
  if (stt != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2728
    return (*stt)() ? os::YIELD_SWITCHED : os::YIELD_NONEREADY ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2729
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2730
    Sleep (0) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2731
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2732
  return os::YIELD_UNKNOWN ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2733
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2734
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2735
void os::yield() {  os::NakedYield(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2736
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2737
void os::yield_all(int attempts) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2738
  // Yields to all threads, including threads with lower priorities
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2739
  Sleep(1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2740
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2741
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2742
// Win32 only gives you access to seven real priorities at a time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2743
// so we compress Java's ten down to seven.  It would be better
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2744
// if we dynamically adjusted relative priorities.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2745
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2746
int os::java_to_os_priority[MaxPriority + 1] = {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2747
  THREAD_PRIORITY_IDLE,                         // 0  Entry should never be used
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2748
  THREAD_PRIORITY_LOWEST,                       // 1  MinPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2749
  THREAD_PRIORITY_LOWEST,                       // 2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2750
  THREAD_PRIORITY_BELOW_NORMAL,                 // 3
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2751
  THREAD_PRIORITY_BELOW_NORMAL,                 // 4
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2752
  THREAD_PRIORITY_NORMAL,                       // 5  NormPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2753
  THREAD_PRIORITY_NORMAL,                       // 6
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2754
  THREAD_PRIORITY_ABOVE_NORMAL,                 // 7
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2755
  THREAD_PRIORITY_ABOVE_NORMAL,                 // 8
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2756
  THREAD_PRIORITY_HIGHEST,                      // 9  NearMaxPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2757
  THREAD_PRIORITY_HIGHEST                       // 10 MaxPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2758
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2759
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2760
int prio_policy1[MaxPriority + 1] = {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2761
  THREAD_PRIORITY_IDLE,                         // 0  Entry should never be used
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2762
  THREAD_PRIORITY_LOWEST,                       // 1  MinPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2763
  THREAD_PRIORITY_LOWEST,                       // 2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2764
  THREAD_PRIORITY_BELOW_NORMAL,                 // 3
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2765
  THREAD_PRIORITY_BELOW_NORMAL,                 // 4
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2766
  THREAD_PRIORITY_NORMAL,                       // 5  NormPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2767
  THREAD_PRIORITY_ABOVE_NORMAL,                 // 6
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2768
  THREAD_PRIORITY_ABOVE_NORMAL,                 // 7
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2769
  THREAD_PRIORITY_HIGHEST,                      // 8
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2770
  THREAD_PRIORITY_HIGHEST,                      // 9  NearMaxPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2771
  THREAD_PRIORITY_TIME_CRITICAL                 // 10 MaxPriority
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2772
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2773
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2774
static int prio_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2775
  // If ThreadPriorityPolicy is 1, switch tables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2776
  if (ThreadPriorityPolicy == 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2777
    int i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2778
    for (i = 0; i < MaxPriority + 1; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2779
      os::java_to_os_priority[i] = prio_policy1[i];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2780
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2781
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2782
  return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2783
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2784
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2785
OSReturn os::set_native_priority(Thread* thread, int priority) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2786
  if (!UseThreadPriorities) return OS_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2787
  bool ret = SetThreadPriority(thread->osthread()->thread_handle(), priority) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2788
  return ret ? OS_OK : OS_ERR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2789
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2790
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2791
OSReturn os::get_native_priority(const Thread* const thread, int* priority_ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2792
  if ( !UseThreadPriorities ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2793
    *priority_ptr = java_to_os_priority[NormPriority];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2794
    return OS_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2795
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2796
  int os_prio = GetThreadPriority(thread->osthread()->thread_handle());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2797
  if (os_prio == THREAD_PRIORITY_ERROR_RETURN) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2798
    assert(false, "GetThreadPriority failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2799
    return OS_ERR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2800
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2801
  *priority_ptr = os_prio;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2802
  return OS_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2803
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2804
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2805
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2806
// Hint to the underlying OS that a task switch would not be good.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2807
// Void return because it's a hint and can fail.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2808
void os::hint_no_preempt() {}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2809
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2810
void os::interrupt(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2811
  assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2812
         "possibility of dangling Thread pointer");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2813
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2814
  OSThread* osthread = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2815
  osthread->set_interrupted(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2816
  // More than one thread can get here with the same value of osthread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2817
  // resulting in multiple notifications.  We do, however, want the store
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2818
  // to interrupted() to be visible to other threads before we post
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2819
  // the interrupt event.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2820
  OrderAccess::release();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2821
  SetEvent(osthread->interrupt_event());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2822
  // For JSR166:  unpark after setting status
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2823
  if (thread->is_Java_thread())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2824
    ((JavaThread*)thread)->parker()->unpark();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2825
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2826
  ParkEvent * ev = thread->_ParkEvent ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2827
  if (ev != NULL) ev->unpark() ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2828
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2829
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2830
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2831
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2832
bool os::is_interrupted(Thread* thread, bool clear_interrupted) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2833
  assert(!thread->is_Java_thread() || Thread::current() == thread || Threads_lock->owned_by_self(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2834
         "possibility of dangling Thread pointer");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2835
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2836
  OSThread* osthread = thread->osthread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2837
  bool interrupted;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2838
  interrupted = osthread->interrupted();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2839
  if (clear_interrupted == true) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2840
    osthread->set_interrupted(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2841
    ResetEvent(osthread->interrupt_event());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2842
  } // Otherwise leave the interrupted state alone
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2843
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2844
  return interrupted;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2845
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2846
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2847
// Get's a pc (hint) for a running thread. Currently used only for profiling.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2848
ExtendedPC os::get_thread_pc(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2849
  CONTEXT context;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2850
  context.ContextFlags = CONTEXT_CONTROL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2851
  HANDLE handle = thread->osthread()->thread_handle();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2852
#ifdef _M_IA64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2853
  assert(0, "Fix get_thread_pc");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2854
  return ExtendedPC(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2855
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2856
  if (GetThreadContext(handle, &context)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2857
#ifdef _M_AMD64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2858
    return ExtendedPC((address) context.Rip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2859
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2860
    return ExtendedPC((address) context.Eip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2861
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2862
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2863
    return ExtendedPC(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2864
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2865
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2866
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2867
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2868
// GetCurrentThreadId() returns DWORD
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2869
intx os::current_thread_id()          { return GetCurrentThreadId(); }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2870
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2871
static int _initial_pid = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2872
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2873
int os::current_process_id()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2874
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2875
  return (_initial_pid ? _initial_pid : _getpid());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2876
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2877
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2878
int    os::win32::_vm_page_size       = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2879
int    os::win32::_vm_allocation_granularity = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2880
int    os::win32::_processor_type     = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2881
// Processor level is not available on non-NT systems, use vm_version instead
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2882
int    os::win32::_processor_level    = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2883
julong os::win32::_physical_memory    = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2884
size_t os::win32::_default_stack_size = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2885
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2886
         intx os::win32::_os_thread_limit    = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2887
volatile intx os::win32::_os_thread_count    = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2888
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2889
bool   os::win32::_is_nt              = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2890
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2891
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2892
void os::win32::initialize_system_info() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2893
  SYSTEM_INFO si;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2894
  GetSystemInfo(&si);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2895
  _vm_page_size    = si.dwPageSize;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2896
  _vm_allocation_granularity = si.dwAllocationGranularity;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2897
  _processor_type  = si.dwProcessorType;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2898
  _processor_level = si.wProcessorLevel;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2899
  _processor_count = si.dwNumberOfProcessors;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2900
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2901
  MEMORYSTATUS ms;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2902
  // also returns dwAvailPhys (free physical memory bytes), dwTotalVirtual, dwAvailVirtual,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2903
  // dwMemoryLoad (% of memory in use)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2904
  GlobalMemoryStatus(&ms);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2905
  _physical_memory = ms.dwTotalPhys;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2906
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2907
  OSVERSIONINFO oi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2908
  oi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2909
  GetVersionEx(&oi);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2910
  switch(oi.dwPlatformId) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2911
    case VER_PLATFORM_WIN32_WINDOWS: _is_nt = false; break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2912
    case VER_PLATFORM_WIN32_NT:      _is_nt = true;  break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2913
    default: fatal("Unknown platform");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2914
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2915
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2916
  _default_stack_size = os::current_stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2917
  assert(_default_stack_size > (size_t) _vm_page_size, "invalid stack size");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2918
  assert((_default_stack_size & (_vm_page_size - 1)) == 0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2919
    "stack size not a multiple of page size");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2920
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2921
  initialize_performance_counter();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2922
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2923
  // Win95/Win98 scheduler bug work-around. The Win95/98 scheduler is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2924
  // known to deadlock the system, if the VM issues to thread operations with
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2925
  // a too high frequency, e.g., such as changing the priorities.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2926
  // The 6000 seems to work well - no deadlocks has been notices on the test
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2927
  // programs that we have seen experience this problem.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2928
  if (!os::win32::is_nt()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2929
    StarvationMonitorInterval = 6000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2930
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2931
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2932
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2933
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2934
void os::win32::setmode_streams() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2935
  _setmode(_fileno(stdin), _O_BINARY);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2936
  _setmode(_fileno(stdout), _O_BINARY);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2937
  _setmode(_fileno(stderr), _O_BINARY);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2938
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2939
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2940
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2941
int os::message_box(const char* title, const char* message) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2942
  int result = MessageBox(NULL, message, title,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2943
                          MB_YESNO | MB_ICONERROR | MB_SYSTEMMODAL | MB_DEFAULT_DESKTOP_ONLY);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2944
  return result == IDYES;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2945
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2946
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2947
int os::allocate_thread_local_storage() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2948
  return TlsAlloc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2949
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2950
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2951
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2952
void os::free_thread_local_storage(int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2953
  TlsFree(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2954
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2955
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2956
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2957
void os::thread_local_storage_at_put(int index, void* value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2958
  TlsSetValue(index, value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2959
  assert(thread_local_storage_at(index) == value, "Just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2960
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2961
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2962
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2963
void* os::thread_local_storage_at(int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2964
  return TlsGetValue(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2965
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2966
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2967
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2968
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2969
#ifndef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2970
// Helpers to check whether NX protection is enabled
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2971
int nx_exception_filter(_EXCEPTION_POINTERS *pex) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2972
  if (pex->ExceptionRecord->ExceptionCode == EXCEPTION_ACCESS_VIOLATION &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2973
      pex->ExceptionRecord->NumberParameters > 0 &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2974
      pex->ExceptionRecord->ExceptionInformation[0] ==
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2975
      EXCEPTION_INFO_EXEC_VIOLATION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2976
    return EXCEPTION_EXECUTE_HANDLER;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2977
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2978
  return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2979
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2980
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2981
void nx_check_protection() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2982
  // If NX is enabled we'll get an exception calling into code on the stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2983
  char code[] = { (char)0xC3 }; // ret
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2984
  void *code_ptr = (void *)code;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2985
  __try {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2986
    __asm call code_ptr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2987
  } __except(nx_exception_filter((_EXCEPTION_POINTERS*)_exception_info())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2988
    tty->print_raw_cr("NX protection detected.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2989
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2990
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2991
#endif // _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2992
#endif // PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2993
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2994
// this is called _before_ the global arguments have been parsed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2995
void os::init(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2996
  _initial_pid = _getpid();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2997
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2998
  init_random(1234567);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2999
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3000
  win32::initialize_system_info();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3001
  win32::setmode_streams();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3002
  init_page_sizes((size_t) win32::vm_page_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3003
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3004
  // For better scalability on MP systems (must be called after initialize_system_info)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3005
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3006
  if (is_MP()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3007
    NoYieldsInMicrolock = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3008
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3009
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3010
  // Initialize main_process and main_thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3011
  main_process = GetCurrentProcess();  // Remember main_process is a pseudo handle
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3012
  if (!DuplicateHandle(main_process, GetCurrentThread(), main_process,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3013
                       &main_thread, THREAD_ALL_ACCESS, false, 0)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3014
    fatal("DuplicateHandle failed\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3015
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3016
  main_thread_id = (int) GetCurrentThreadId();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3017
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3018
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3019
// To install functions for atexit processing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3020
extern "C" {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3021
  static void perfMemory_exit_helper() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3022
    perfMemory_exit();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3023
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3024
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3025
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3026
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3027
// this is called _after_ the global arguments have been parsed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3028
jint os::init_2(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3029
  // Allocate a single page and mark it as readable for safepoint polling
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3030
  address polling_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_READONLY);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3031
  guarantee( polling_page != NULL, "Reserve Failed for polling page");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3032
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3033
  address return_page  = (address)VirtualAlloc(polling_page, os::vm_page_size(), MEM_COMMIT, PAGE_READONLY);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3034
  guarantee( return_page != NULL, "Commit Failed for polling page");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3035
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3036
  os::set_polling_page( polling_page );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3037
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3038
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3039
  if( Verbose && PrintMiscellaneous )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3040
    tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3041
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3042
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3043
  if (!UseMembar) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3044
    address mem_serialize_page = (address)VirtualAlloc(NULL, os::vm_page_size(), MEM_RESERVE, PAGE_EXECUTE_READWRITE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3045
    guarantee( mem_serialize_page != NULL, "Reserve Failed for memory serialize page");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3046
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3047
    return_page  = (address)VirtualAlloc(mem_serialize_page, os::vm_page_size(), MEM_COMMIT, PAGE_EXECUTE_READWRITE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3048
    guarantee( return_page != NULL, "Commit Failed for memory serialize page");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3049
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3050
    os::set_memory_serialize_page( mem_serialize_page );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3051
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3052
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3053
    if(Verbose && PrintMiscellaneous)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3054
      tty->print("[Memory Serialize  Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3055
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3056
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3057
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3058
  FLAG_SET_DEFAULT(UseLargePages, os::large_page_init());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3059
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3060
  // Setup Windows Exceptions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3061
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3062
  // On Itanium systems, Structured Exception Handling does not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3063
  // work since stack frames must be walkable by the OS.  Since
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3064
  // much of our code is dynamically generated, and we do not have
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3065
  // proper unwind .xdata sections, the system simply exits
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3066
  // rather than delivering the exception.  To work around
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3067
  // this we use VectorExceptions instead.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3068
#ifdef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3069
  if (UseVectoredExceptions) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3070
    topLevelVectoredExceptionHandler = AddVectoredExceptionHandler( 1, topLevelExceptionFilter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3071
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3072
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3073
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3074
  // for debugging float code generation bugs
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3075
  if (ForceFloatExceptions) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3076
#ifndef  _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3077
    static long fp_control_word = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3078
    __asm { fstcw fp_control_word }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3079
    // see Intel PPro Manual, Vol. 2, p 7-16
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3080
    const long precision = 0x20;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3081
    const long underflow = 0x10;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3082
    const long overflow  = 0x08;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3083
    const long zero_div  = 0x04;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3084
    const long denorm    = 0x02;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3085
    const long invalid   = 0x01;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3086
    fp_control_word |= invalid;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3087
    __asm { fldcw fp_control_word }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3088
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3089
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3090
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3091
  // Initialize HPI.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3092
  jint hpi_result = hpi::initialize();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3093
  if (hpi_result != JNI_OK) { return hpi_result; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3094
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3095
  // If stack_commit_size is 0, windows will reserve the default size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3096
  // but only commit a small portion of it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3097
  size_t stack_commit_size = round_to(ThreadStackSize*K, os::vm_page_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3098
  size_t default_reserve_size = os::win32::default_stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3099
  size_t actual_reserve_size = stack_commit_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3100
  if (stack_commit_size < default_reserve_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3101
    // If stack_commit_size == 0, we want this too
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3102
    actual_reserve_size = default_reserve_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3103
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3104
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3105
  JavaThread::set_stack_size_at_create(stack_commit_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3106
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3107
  // Calculate theoretical max. size of Threads to guard gainst artifical
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3108
  // out-of-memory situations, where all available address-space has been
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3109
  // reserved by thread stacks.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3110
  assert(actual_reserve_size != 0, "Must have a stack");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3111
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3112
  // Calculate the thread limit when we should start doing Virtual Memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3113
  // banging. Currently when the threads will have used all but 200Mb of space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3114
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3115
  // TODO: consider performing a similar calculation for commit size instead
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3116
  // as reserve size, since on a 64-bit platform we'll run into that more
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3117
  // often than running out of virtual memory space.  We can use the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3118
  // lower value of the two calculations as the os_thread_limit.
360
21d113ecbf6a 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents: 252
diff changeset
  3119
  size_t max_address_space = ((size_t)1 << (BitsPerWord - 1)) - (200 * K * K);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3120
  win32::_os_thread_limit = (intx)(max_address_space / actual_reserve_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3121
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3122
  // at exit methods are called in the reverse order of their registration.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3123
  // there is no limit to the number of functions registered. atexit does
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3124
  // not set errno.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3125
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3126
  if (PerfAllowAtExitRegistration) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3127
    // only register atexit functions if PerfAllowAtExitRegistration is set.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3128
    // atexit functions can be delayed until process exit time, which
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3129
    // can be problematic for embedded VM situations. Embedded VMs should
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3130
    // call DestroyJavaVM() to assure that VM resources are released.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3131
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3132
    // note: perfMemory_exit_helper atexit function may be removed in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3133
    // the future if the appropriate cleanup code can be added to the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3134
    // VM_Exit VMOperation's doit method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3135
    if (atexit(perfMemory_exit_helper) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3136
      warning("os::init_2 atexit(perfMemory_exit_helper) failed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3137
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3138
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3139
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3140
  // initialize PSAPI or ToolHelp for fatal error handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3141
  if (win32::is_nt()) _init_psapi();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3142
  else _init_toolhelp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3143
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3144
#ifndef _WIN64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3145
  // Print something if NX is enabled (win32 on AMD64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3146
  NOT_PRODUCT(if (PrintMiscellaneous && Verbose) nx_check_protection());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3147
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3148
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3149
  // initialize thread priority policy
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3150
  prio_init();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3151
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3152
  return JNI_OK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3153
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3154
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3155
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3156
// Mark the polling page as unreadable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3157
void os::make_polling_page_unreadable(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3158
  DWORD old_status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3159
  if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_NOACCESS, &old_status) )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3160
    fatal("Could not disable polling page");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3161
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3162
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3163
// Mark the polling page as readable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3164
void os::make_polling_page_readable(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3165
  DWORD old_status;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3166
  if( !VirtualProtect((char *)_polling_page, os::vm_page_size(), PAGE_READONLY, &old_status) )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3167
    fatal("Could not enable polling page");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3168
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3169
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3170
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3171
int os::stat(const char *path, struct stat *sbuf) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3172
  char pathbuf[MAX_PATH];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3173
  if (strlen(path) > MAX_PATH - 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3174
    errno = ENAMETOOLONG;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3175
    return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3176
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3177
  hpi::native_path(strcpy(pathbuf, path));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3178
  int ret = ::stat(pathbuf, sbuf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3179
  if (sbuf != NULL && UseUTCFileTimestamp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3180
    // Fix for 6539723.  st_mtime returned from stat() is dependent on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3181
    // the system timezone and so can return different values for the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3182
    // same file if/when daylight savings time changes.  This adjustment
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3183
    // makes sure the same timestamp is returned regardless of the TZ.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3184
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3185
    // See:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3186
    // http://msdn.microsoft.com/library/
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3187
    //   default.asp?url=/library/en-us/sysinfo/base/
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3188
    //   time_zone_information_str.asp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3189
    // and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3190
    // http://msdn.microsoft.com/library/default.asp?url=
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3191
    //   /library/en-us/sysinfo/base/settimezoneinformation.asp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3192
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3193
    // NOTE: there is a insidious bug here:  If the timezone is changed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3194
    // after the call to stat() but before 'GetTimeZoneInformation()', then
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3195
    // the adjustment we do here will be wrong and we'll return the wrong
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3196
    // value (which will likely end up creating an invalid class data
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3197
    // archive).  Absent a better API for this, or some time zone locking
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3198
    // mechanism, we'll have to live with this risk.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3199
    TIME_ZONE_INFORMATION tz;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3200
    DWORD tzid = GetTimeZoneInformation(&tz);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3201
    int daylightBias =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3202
      (tzid == TIME_ZONE_ID_DAYLIGHT) ?  tz.DaylightBias : tz.StandardBias;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3203
    sbuf->st_mtime += (tz.Bias + daylightBias) * 60;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3204
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3205
  return ret;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3206
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3207
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3208
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3209
#define FT2INT64(ft) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3210
  ((jlong)((jlong)(ft).dwHighDateTime << 32 | (julong)(ft).dwLowDateTime))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3211
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3212
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3213
// current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3214
// are used by JVM M&M and JVMTI to get user+sys or user CPU time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3215
// of a thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3216
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3217
// current_thread_cpu_time() and thread_cpu_time(Thread*) returns
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3218
// the fast estimate available on the platform.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3219
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3220
// current_thread_cpu_time() is not optimized for Windows yet
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3221
jlong os::current_thread_cpu_time() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3222
  // return user + sys since the cost is the same
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3223
  return os::thread_cpu_time(Thread::current(), true /* user+sys */);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3224
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3225
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3226
jlong os::thread_cpu_time(Thread* thread) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3227
  // consistent with what current_thread_cpu_time() returns.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3228
  return os::thread_cpu_time(thread, true /* user+sys */);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3229
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3230
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3231
jlong os::current_thread_cpu_time(bool user_sys_cpu_time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3232
  return os::thread_cpu_time(Thread::current(), user_sys_cpu_time);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3233
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3234
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3235
jlong os::thread_cpu_time(Thread* thread, bool user_sys_cpu_time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3236
  // This code is copy from clasic VM -> hpi::sysThreadCPUTime
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3237
  // If this function changes, os::is_thread_cpu_time_supported() should too
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3238
  if (os::win32::is_nt()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3239
    FILETIME CreationTime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3240
    FILETIME ExitTime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3241
    FILETIME KernelTime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3242
    FILETIME UserTime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3243
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3244
    if ( GetThreadTimes(thread->osthread()->thread_handle(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3245
                    &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3246
      return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3247
    else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3248
      if (user_sys_cpu_time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3249
        return (FT2INT64(UserTime) + FT2INT64(KernelTime)) * 100;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3250
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3251
        return FT2INT64(UserTime) * 100;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3252
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3253
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3254
    return (jlong) timeGetTime() * 1000000;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3255
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3256
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3257
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3258
void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3259
  info_ptr->max_value = ALL_64_BITS;        // the max value -- all 64 bits
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3260
  info_ptr->may_skip_backward = false;      // GetThreadTimes returns absolute time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3261
  info_ptr->may_skip_forward = false;       // GetThreadTimes returns absolute time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3262
  info_ptr->kind = JVMTI_TIMER_TOTAL_CPU;   // user+system time is returned
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3263
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3264
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3265
void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3266
  info_ptr->max_value = ALL_64_BITS;        // the max value -- all 64 bits
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3267
  info_ptr->may_skip_backward = false;      // GetThreadTimes returns absolute time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3268
  info_ptr->may_skip_forward = false;       // GetThreadTimes returns absolute time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3269
  info_ptr->kind = JVMTI_TIMER_TOTAL_CPU;   // user+system time is returned
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3270
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3271
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3272
bool os::is_thread_cpu_time_supported() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3273
  // see os::thread_cpu_time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3274
  if (os::win32::is_nt()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3275
    FILETIME CreationTime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3276
    FILETIME ExitTime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3277
    FILETIME KernelTime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3278
    FILETIME UserTime;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3279
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3280
    if ( GetThreadTimes(GetCurrentThread(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3281
                    &CreationTime, &ExitTime, &KernelTime, &UserTime) == 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3282
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3283
    else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3284
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3285
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3286
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3287
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3288
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3289
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3290
// Windows does't provide a loadavg primitive so this is stubbed out for now.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3291
// It does have primitives (PDH API) to get CPU usage and run queue length.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3292
// "\\Processor(_Total)\\% Processor Time", "\\System\\Processor Queue Length"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3293
// If we wanted to implement loadavg on Windows, we have a few options:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3294
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3295
// a) Query CPU usage and run queue length and "fake" an answer by
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3296
//    returning the CPU usage if it's under 100%, and the run queue
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3297
//    length otherwise.  It turns out that querying is pretty slow
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3298
//    on Windows, on the order of 200 microseconds on a fast machine.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3299
//    Note that on the Windows the CPU usage value is the % usage
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3300
//    since the last time the API was called (and the first call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3301
//    returns 100%), so we'd have to deal with that as well.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3302
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3303
// b) Sample the "fake" answer using a sampling thread and store
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3304
//    the answer in a global variable.  The call to loadavg would
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3305
//    just return the value of the global, avoiding the slow query.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3306
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3307
// c) Sample a better answer using exponential decay to smooth the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3308
//    value.  This is basically the algorithm used by UNIX kernels.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3309
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3310
// Note that sampling thread starvation could affect both (b) and (c).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3311
int os::loadavg(double loadavg[], int nelem) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3312
  return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3313
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3314
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3315
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3316
// DontYieldALot=false by default: dutifully perform all yields as requested by JVM_Yield()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3317
bool os::dont_yield() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3318
  return DontYieldALot;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3319
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3320
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3321
// Is a (classpath) directory empty?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3322
bool os::dir_is_empty(const char* path) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3323
  WIN32_FIND_DATA fd;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3324
  HANDLE f = FindFirstFile(path, &fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3325
  if (f == INVALID_HANDLE_VALUE) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3326
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3327
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3328
  FindClose(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3329
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3330
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3331
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3332
// create binary file, rewriting existing file if required
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3333
int os::create_binary_file(const char* path, bool rewrite_existing) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3334
  int oflags = _O_CREAT | _O_WRONLY | _O_BINARY;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3335
  if (!rewrite_existing) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3336
    oflags |= _O_EXCL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3337
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3338
  return ::open(path, oflags, _S_IREAD | _S_IWRITE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3339
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3340
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3341
// return current position of file pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3342
jlong os::current_file_offset(int fd) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3343
  return (jlong)::_lseeki64(fd, (__int64)0L, SEEK_CUR);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3344
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3345
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3346
// move file pointer to the specified offset
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3347
jlong os::seek_to_file_offset(int fd, jlong offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3348
  return (jlong)::_lseeki64(fd, (__int64)offset, SEEK_SET);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3349
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3350
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3351
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3352
// Map a block of memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3353
char* os::map_memory(int fd, const char* file_name, size_t file_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3354
                     char *addr, size_t bytes, bool read_only,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3355
                     bool allow_exec) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3356
  HANDLE hFile;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3357
  char* base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3358
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3359
  hFile = CreateFile(file_name, GENERIC_READ, FILE_SHARE_READ, NULL,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3360
                     OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3361
  if (hFile == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3362
    if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3363
      DWORD err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3364
      tty->print_cr("CreateFile() failed: GetLastError->%ld.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3365
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3366
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3367
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3368
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3369
  if (allow_exec) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3370
    // CreateFileMapping/MapViewOfFileEx can't map executable memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3371
    // unless it comes from a PE image (which the shared archive is not.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3372
    // Even VirtualProtect refuses to give execute access to mapped memory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3373
    // that was not previously executable.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3374
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3375
    // Instead, stick the executable region in anonymous memory.  Yuck.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3376
    // Penalty is that ~4 pages will not be shareable - in the future
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3377
    // we might consider DLLizing the shared archive with a proper PE
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3378
    // header so that mapping executable + sharing is possible.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3379
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3380
    base = (char*) VirtualAlloc(addr, bytes, MEM_COMMIT | MEM_RESERVE,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3381
                                PAGE_READWRITE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3382
    if (base == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3383
      if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3384
        DWORD err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3385
        tty->print_cr("VirtualAlloc() failed: GetLastError->%ld.", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3386
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3387
      CloseHandle(hFile);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3388
      return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3389
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3390
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3391
    DWORD bytes_read;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3392
    OVERLAPPED overlapped;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3393
    overlapped.Offset = (DWORD)file_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3394
    overlapped.OffsetHigh = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3395
    overlapped.hEvent = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3396
    // ReadFile guarantees that if the return value is true, the requested
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3397
    // number of bytes were read before returning.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3398
    bool res = ReadFile(hFile, base, (DWORD)bytes, &bytes_read, &overlapped) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3399
    if (!res) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3400
      if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3401
        DWORD err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3402
        tty->print_cr("ReadFile() failed: GetLastError->%ld.", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3403
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3404
      release_memory(base, bytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3405
      CloseHandle(hFile);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3406
      return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3407
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3408
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3409
    HANDLE hMap = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3410
                                    NULL /*file_name*/);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3411
    if (hMap == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3412
      if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3413
        DWORD err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3414
        tty->print_cr("CreateFileMapping() failed: GetLastError->%ld.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3415
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3416
      CloseHandle(hFile);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3417
      return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3418
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3419
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3420
    DWORD access = read_only ? FILE_MAP_READ : FILE_MAP_COPY;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3421
    base = (char*)MapViewOfFileEx(hMap, access, 0, (DWORD)file_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3422
                                  (DWORD)bytes, addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3423
    if (base == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3424
      if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3425
        DWORD err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3426
        tty->print_cr("MapViewOfFileEx() failed: GetLastError->%ld.", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3427
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3428
      CloseHandle(hMap);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3429
      CloseHandle(hFile);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3430
      return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3431
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3432
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3433
    if (CloseHandle(hMap) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3434
      if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3435
        DWORD err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3436
        tty->print_cr("CloseHandle(hMap) failed: GetLastError->%ld.", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3437
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3438
      CloseHandle(hFile);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3439
      return base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3440
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3441
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3442
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3443
  if (allow_exec) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3444
    DWORD old_protect;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3445
    DWORD exec_access = read_only ? PAGE_EXECUTE_READ : PAGE_EXECUTE_READWRITE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3446
    bool res = VirtualProtect(base, bytes, exec_access, &old_protect) != 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3447
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3448
    if (!res) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3449
      if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3450
        DWORD err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3451
        tty->print_cr("VirtualProtect() failed: GetLastError->%ld.", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3452
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3453
      // Don't consider this a hard error, on IA32 even if the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3454
      // VirtualProtect fails, we should still be able to execute
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3455
      CloseHandle(hFile);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3456
      return base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3457
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3458
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3459
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3460
  if (CloseHandle(hFile) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3461
    if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3462
      DWORD err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3463
      tty->print_cr("CloseHandle(hFile) failed: GetLastError->%ld.", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3464
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3465
    return base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3466
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3467
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3468
  return base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3469
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3470
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3471
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3472
// Remap a block of memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3473
char* os::remap_memory(int fd, const char* file_name, size_t file_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3474
                       char *addr, size_t bytes, bool read_only,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3475
                       bool allow_exec) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3476
  // This OS does not allow existing memory maps to be remapped so we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3477
  // have to unmap the memory before we remap it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3478
  if (!os::unmap_memory(addr, bytes)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3479
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3480
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3481
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3482
  // There is a very small theoretical window between the unmap_memory()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3483
  // call above and the map_memory() call below where a thread in native
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3484
  // code may be able to access an address that is no longer mapped.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3485
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3486
  return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3487
                        allow_exec);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3488
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3489
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3490
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3491
// Unmap a block of memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3492
// Returns true=success, otherwise false.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3493
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3494
bool os::unmap_memory(char* addr, size_t bytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3495
  BOOL result = UnmapViewOfFile(addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3496
  if (result == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3497
    if (PrintMiscellaneous && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3498
      DWORD err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3499
      tty->print_cr("UnmapViewOfFile() failed: GetLastError->%ld.", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3500
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3501
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3502
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3503
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3504
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3505
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3506
void os::pause() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3507
  char filename[MAX_PATH];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3508
  if (PauseAtStartupFile && PauseAtStartupFile[0]) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3509
    jio_snprintf(filename, MAX_PATH, PauseAtStartupFile);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3510
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3511
    jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3512
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3513
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3514
  int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3515
  if (fd != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3516
    struct stat buf;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3517
    close(fd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3518
    while (::stat(filename, &buf) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3519
      Sleep(100);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3520
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3521
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3522
    jio_fprintf(stderr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3523
      "Could not open pause file '%s', continuing immediately.\n", filename);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3524
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3525
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3526
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3527
// An Event wraps a win32 "CreateEvent" kernel handle.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3528
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3529
// We have a number of choices regarding "CreateEvent" win32 handle leakage:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3530
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3531
// 1:  When a thread dies return the Event to the EventFreeList, clear the ParkHandle
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3532
//     field, and call CloseHandle() on the win32 event handle.  Unpark() would
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3533
//     need to be modified to tolerate finding a NULL (invalid) win32 event handle.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3534
//     In addition, an unpark() operation might fetch the handle field, but the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3535
//     event could recycle between the fetch and the SetEvent() operation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3536
//     SetEvent() would either fail because the handle was invalid, or inadvertently work,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3537
//     as the win32 handle value had been recycled.  In an ideal world calling SetEvent()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3538
//     on an stale but recycled handle would be harmless, but in practice this might
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3539
//     confuse other non-Sun code, so it's not a viable approach.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3540
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3541
// 2:  Once a win32 event handle is associated with an Event, it remains associated
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3542
//     with the Event.  The event handle is never closed.  This could be construed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3543
//     as handle leakage, but only up to the maximum # of threads that have been extant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3544
//     at any one time.  This shouldn't be an issue, as windows platforms typically
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3545
//     permit a process to have hundreds of thousands of open handles.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3546
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3547
// 3:  Same as (1), but periodically, at stop-the-world time, rundown the EventFreeList
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3548
//     and release unused handles.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3549
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3550
// 4:  Add a CRITICAL_SECTION to the Event to protect LD+SetEvent from LD;ST(null);CloseHandle.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3551
//     It's not clear, however, that we wouldn't be trading one type of leak for another.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3552
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3553
// 5.  Use an RCU-like mechanism (Read-Copy Update).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3554
//     Or perhaps something similar to Maged Michael's "Hazard pointers".
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3555
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3556
// We use (2).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3557
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3558
// TODO-FIXME:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3559
// 1.  Reconcile Doug's JSR166 j.u.c park-unpark with the objectmonitor implementation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3560
// 2.  Consider wrapping the WaitForSingleObject(Ex) calls in SEH try/finally blocks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3561
//     to recover from (or at least detect) the dreaded Windows 841176 bug.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3562
// 3.  Collapse the interrupt_event, the JSR166 parker event, and the objectmonitor ParkEvent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3563
//     into a single win32 CreateEvent() handle.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3564
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3565
// _Event transitions in park()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3566
//   -1 => -1 : illegal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3567
//    1 =>  0 : pass - return immediately
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3568
//    0 => -1 : block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3569
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3570
// _Event serves as a restricted-range semaphore :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3571
//    -1 : thread is blocked
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3572
//     0 : neutral  - thread is running or ready
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3573
//     1 : signaled - thread is running or ready
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3574
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3575
// Another possible encoding of _Event would be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3576
// with explicit "PARKED" and "SIGNALED" bits.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3577
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3578
int os::PlatformEvent::park (jlong Millis) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3579
    guarantee (_ParkHandle != NULL , "Invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3580
    guarantee (Millis > 0          , "Invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3581
    int v ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3582
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3583
    // CONSIDER: defer assigning a CreateEvent() handle to the Event until
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3584
    // the initial park() operation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3585
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3586
    for (;;) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3587
        v = _Event ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3588
        if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3589
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3590
    guarantee ((v == 0) || (v == 1), "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3591
    if (v != 0) return OS_OK ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3592
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3593
    // Do this the hard way by blocking ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3594
    // TODO: consider a brief spin here, gated on the success of recent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3595
    // spin attempts by this thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3596
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3597
    // We decompose long timeouts into series of shorter timed waits.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3598
    // Evidently large timo values passed in WaitForSingleObject() are problematic on some
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3599
    // versions of Windows.  See EventWait() for details.  This may be superstition.  Or not.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3600
    // We trust the WAIT_TIMEOUT indication and don't track the elapsed wait time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3601
    // with os::javaTimeNanos().  Furthermore, we assume that spurious returns from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3602
    // ::WaitForSingleObject() caused by latent ::setEvent() operations will tend
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3603
    // to happen early in the wait interval.  Specifically, after a spurious wakeup (rv ==
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3604
    // WAIT_OBJECT_0 but _Event is still < 0) we don't bother to recompute Millis to compensate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3605
    // for the already waited time.  This policy does not admit any new outcomes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3606
    // In the future, however, we might want to track the accumulated wait time and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3607
    // adjust Millis accordingly if we encounter a spurious wakeup.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3608
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3609
    const int MAXTIMEOUT = 0x10000000 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3610
    DWORD rv = WAIT_TIMEOUT ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3611
    while (_Event < 0 && Millis > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3612
       DWORD prd = Millis ;     // set prd = MAX (Millis, MAXTIMEOUT)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3613
       if (Millis > MAXTIMEOUT) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3614
          prd = MAXTIMEOUT ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3615
       }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3616
       rv = ::WaitForSingleObject (_ParkHandle, prd) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3617
       assert (rv == WAIT_OBJECT_0 || rv == WAIT_TIMEOUT, "WaitForSingleObject failed") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3618
       if (rv == WAIT_TIMEOUT) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3619
           Millis -= prd ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3620
       }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3621
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3622
    v = _Event ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3623
    _Event = 0 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3624
    OrderAccess::fence() ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3625
    // If we encounter a nearly simultanous timeout expiry and unpark()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3626
    // we return OS_OK indicating we awoke via unpark().
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3627
    // Implementor's license -- returning OS_TIMEOUT would be equally valid, however.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3628
    return (v >= 0) ? OS_OK : OS_TIMEOUT ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3629
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3630
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3631
void os::PlatformEvent::park () {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3632
    guarantee (_ParkHandle != NULL, "Invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3633
    // Invariant: Only the thread associated with the Event/PlatformEvent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3634
    // may call park().
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3635
    int v ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3636
    for (;;) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3637
        v = _Event ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3638
        if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3639
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3640
    guarantee ((v == 0) || (v == 1), "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3641
    if (v != 0) return ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3642
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3643
    // Do this the hard way by blocking ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3644
    // TODO: consider a brief spin here, gated on the success of recent
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3645
    // spin attempts by this thread.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3646
    while (_Event < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3647
       DWORD rv = ::WaitForSingleObject (_ParkHandle, INFINITE) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3648
       assert (rv == WAIT_OBJECT_0, "WaitForSingleObject failed") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3649
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3650
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3651
    // Usually we'll find _Event == 0 at this point, but as
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3652
    // an optional optimization we clear it, just in case can
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3653
    // multiple unpark() operations drove _Event up to 1.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3654
    _Event = 0 ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3655
    OrderAccess::fence() ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3656
    guarantee (_Event >= 0, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3657
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3658
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3659
void os::PlatformEvent::unpark() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3660
  guarantee (_ParkHandle != NULL, "Invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3661
  int v ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3662
  for (;;) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3663
      v = _Event ;      // Increment _Event if it's < 1.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3664
      if (v > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3665
         // If it's already signaled just return.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3666
         // The LD of _Event could have reordered or be satisfied
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3667
         // by a read-aside from this processor's write buffer.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3668
         // To avoid problems execute a barrier and then
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3669
         // ratify the value.  A degenerate CAS() would also work.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3670
         // Viz., CAS (v+0, &_Event, v) == v).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3671
         OrderAccess::fence() ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3672
         if (_Event == v) return ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3673
         continue ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3674
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3675
      if (Atomic::cmpxchg (v+1, &_Event, v) == v) break ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3676
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3677
  if (v < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3678
     ::SetEvent (_ParkHandle) ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3679
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3680
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3681
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3682
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3683
// JSR166
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3684
// -------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3685
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3686
/*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3687
 * The Windows implementation of Park is very straightforward: Basic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3688
 * operations on Win32 Events turn out to have the right semantics to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3689
 * use them directly. We opportunistically resuse the event inherited
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3690
 * from Monitor.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3691
 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3692
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3693
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3694
void Parker::park(bool isAbsolute, jlong time) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3695
  guarantee (_ParkEvent != NULL, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3696
  // First, demultiplex/decode time arguments
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3697
  if (time < 0) { // don't wait
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3698
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3699
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3700
  else if (time == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3701
    time = INFINITE;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3702
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3703
  else if  (isAbsolute) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3704
    time -= os::javaTimeMillis(); // convert to relative time
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3705
    if (time <= 0) // already elapsed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3706
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3707
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3708
  else { // relative
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3709
    time /= 1000000; // Must coarsen from nanos to millis
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3710
    if (time == 0)   // Wait for the minimal time unit if zero
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3711
      time = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3712
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3713
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3714
  JavaThread* thread = (JavaThread*)(Thread::current());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3715
  assert(thread->is_Java_thread(), "Must be JavaThread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3716
  JavaThread *jt = (JavaThread *)thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3717
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3718
  // Don't wait if interrupted or already triggered
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3719
  if (Thread::is_interrupted(thread, false) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3720
    WaitForSingleObject(_ParkEvent, 0) == WAIT_OBJECT_0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3721
    ResetEvent(_ParkEvent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3722
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3723
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3724
  else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3725
    ThreadBlockInVM tbivm(jt);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3726
    OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3727
    jt->set_suspend_equivalent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3728
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3729
    WaitForSingleObject(_ParkEvent,  time);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3730
    ResetEvent(_ParkEvent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3731
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3732
    // If externally suspended while waiting, re-suspend
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3733
    if (jt->handle_special_suspend_equivalent_condition()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3734
      jt->java_suspend_self();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3735
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3736
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3737
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3738
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3739
void Parker::unpark() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3740
  guarantee (_ParkEvent != NULL, "invariant") ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3741
  SetEvent(_ParkEvent);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3742
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3743
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3744
// Run the specified command in a separate process. Return its exit value,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3745
// or -1 on failure (e.g. can't create a new process).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3746
int os::fork_and_exec(char* cmd) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3747
  STARTUPINFO si;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3748
  PROCESS_INFORMATION pi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3749
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3750
  memset(&si, 0, sizeof(si));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3751
  si.cb = sizeof(si);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3752
  memset(&pi, 0, sizeof(pi));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3753
  BOOL rslt = CreateProcess(NULL,   // executable name - use command line
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3754
                            cmd,    // command line
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3755
                            NULL,   // process security attribute
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3756
                            NULL,   // thread security attribute
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3757
                            TRUE,   // inherits system handles
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3758
                            0,      // no creation flags
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3759
                            NULL,   // use parent's environment block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3760
                            NULL,   // use parent's starting directory
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3761
                            &si,    // (in) startup information
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3762
                            &pi);   // (out) process information
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3763
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3764
  if (rslt) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3765
    // Wait until child process exits.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3766
    WaitForSingleObject(pi.hProcess, INFINITE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3767
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3768
    DWORD exit_code;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3769
    GetExitCodeProcess(pi.hProcess, &exit_code);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3770
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3771
    // Close process and thread handles.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3772
    CloseHandle(pi.hProcess);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3773
    CloseHandle(pi.hThread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3774
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3775
    return (int)exit_code;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3776
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3777
    return -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3778
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3779
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3780
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3781
//--------------------------------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3782
// Non-product code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3783
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3784
static int mallocDebugIntervalCounter = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3785
static int mallocDebugCounter = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3786
bool os::check_heap(bool force) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3787
  if (++mallocDebugCounter < MallocVerifyStart && !force) return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3788
  if (++mallocDebugIntervalCounter >= MallocVerifyInterval || force) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3789
    // Note: HeapValidate executes two hardware breakpoints when it finds something
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3790
    // wrong; at these points, eax contains the address of the offending block (I think).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3791
    // To get to the exlicit error message(s) below, just continue twice.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3792
    HANDLE heap = GetProcessHeap();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3793
    { HeapLock(heap);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3794
      PROCESS_HEAP_ENTRY phe;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3795
      phe.lpData = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3796
      while (HeapWalk(heap, &phe) != 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3797
        if ((phe.wFlags & PROCESS_HEAP_ENTRY_BUSY) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3798
            !HeapValidate(heap, 0, phe.lpData)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3799
          tty->print_cr("C heap has been corrupted (time: %d allocations)", mallocDebugCounter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3800
          tty->print_cr("corrupted block near address %#x, length %d", phe.lpData, phe.cbData);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3801
          fatal("corrupted C heap");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3802
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3803
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3804
      int err = GetLastError();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3805
      if (err != ERROR_NO_MORE_ITEMS && err != ERROR_CALL_NOT_IMPLEMENTED) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3806
        fatal1("heap walk aborted with error %d", err);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3807
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3808
      HeapUnlock(heap);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3809
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3810
    mallocDebugIntervalCounter = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3811
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3812
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3813
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3814
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3815
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3816
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3817
bool os::find(address addr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3818
  // Nothing yet
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3819
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3820
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3821
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3822
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3823
LONG WINAPI os::win32::serialize_fault_filter(struct _EXCEPTION_POINTERS* e) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3824
  DWORD exception_code = e->ExceptionRecord->ExceptionCode;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3825
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3826
  if ( exception_code == EXCEPTION_ACCESS_VIOLATION ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3827
    JavaThread* thread = (JavaThread*)ThreadLocalStorage::get_thread_slow();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3828
    PEXCEPTION_RECORD exceptionRecord = e->ExceptionRecord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3829
    address addr = (address) exceptionRecord->ExceptionInformation[1];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3830
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3831
    if (os::is_memory_serialize_page(thread, addr))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3832
      return EXCEPTION_CONTINUE_EXECUTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3833
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3834
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3835
  return EXCEPTION_CONTINUE_SEARCH;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3836
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3837
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3838
static int getLastErrorString(char *buf, size_t len)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3839
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3840
    long errval;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3841
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3842
    if ((errval = GetLastError()) != 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3843
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3844
      /* DOS error */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3845
      size_t n = (size_t)FormatMessage(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3846
            FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3847
            NULL,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3848
            errval,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3849
            0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3850
            buf,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3851
            (DWORD)len,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3852
            NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3853
      if (n > 3) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3854
        /* Drop final '.', CR, LF */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3855
        if (buf[n - 1] == '\n') n--;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3856
        if (buf[n - 1] == '\r') n--;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3857
        if (buf[n - 1] == '.') n--;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3858
        buf[n] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3859
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3860
      return (int)n;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3861
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3862
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3863
    if (errno != 0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3864
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3865
      /* C runtime error that has no corresponding DOS error code */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3866
      const char *s = strerror(errno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3867
      size_t n = strlen(s);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3868
      if (n >= len) n = len - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3869
      strncpy(buf, s, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3870
      buf[n] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3871
      return (int)n;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3872
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3873
    return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3874
}