hotspot/src/share/vm/memory/filemap.cpp
author hseigel
Wed, 10 Aug 2016 15:48:04 -0700
changeset 40244 b3055c216762
parent 40013 943cf01a6b82
child 41182 dbd59c1da636
permissions -rw-r--r--
8136930: Simplify use of module-system options by custom launchers Reviewed-by: coleenp, lfoltan, mchung
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/*
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 * Copyright (c) 2003, 2016, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "classfile/classLoader.hpp"
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#include "classfile/compactHashtable.inline.hpp"
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#include "classfile/sharedClassUtil.hpp"
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#include "classfile/symbolTable.hpp"
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#include "classfile/systemDictionaryShared.hpp"
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#include "classfile/altHashing.hpp"
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#if INCLUDE_ALL_GCS
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#include "gc/g1/g1CollectedHeap.hpp"
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#endif
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#include "memory/filemap.hpp"
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#include "memory/metadataFactory.hpp"
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#include "memory/oopFactory.hpp"
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#include "oops/objArrayOop.hpp"
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#include "prims/jvmtiExport.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/java.hpp"
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#include "runtime/os.hpp"
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#include "runtime/vm_version.hpp"
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#include "services/memTracker.hpp"
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#include "utilities/defaultStream.hpp"
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# include <sys/stat.h>
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# include <errno.h>
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#ifndef O_BINARY       // if defined (Win32) use binary files.
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#define O_BINARY 0     // otherwise do nothing.
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#endif
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extern address JVM_FunctionAtStart();
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extern address JVM_FunctionAtEnd();
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// Complain and stop. All error conditions occurring during the writing of
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// an archive file should stop the process.  Unrecoverable errors during
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// the reading of the archive file should stop the process.
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static void fail(const char *msg, va_list ap) {
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  // This occurs very early during initialization: tty is not initialized.
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  jio_fprintf(defaultStream::error_stream(),
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              "An error has occurred while processing the"
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              " shared archive file.\n");
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  jio_vfprintf(defaultStream::error_stream(), msg, ap);
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  jio_fprintf(defaultStream::error_stream(), "\n");
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  // Do not change the text of the below message because some tests check for it.
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  vm_exit_during_initialization("Unable to use shared archive.", NULL);
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}
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void FileMapInfo::fail_stop(const char *msg, ...) {
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        va_list ap;
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  va_start(ap, msg);
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  fail(msg, ap);        // Never returns.
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  va_end(ap);           // for completeness.
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}
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// Complain and continue.  Recoverable errors during the reading of the
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// archive file may continue (with sharing disabled).
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//
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// If we continue, then disable shared spaces and close the file.
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void FileMapInfo::fail_continue(const char *msg, ...) {
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  va_list ap;
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  va_start(ap, msg);
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  MetaspaceShared::set_archive_loading_failed();
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  if (PrintSharedArchiveAndExit && _validating_classpath_entry_table) {
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    // If we are doing PrintSharedArchiveAndExit and some of the classpath entries
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    // do not validate, we can still continue "limping" to validate the remaining
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    // entries. No need to quit.
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    tty->print("[");
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    tty->vprint(msg, ap);
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    tty->print_cr("]");
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  } else {
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    if (RequireSharedSpaces) {
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      fail(msg, ap);
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    } else {
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      if (PrintSharedSpaces) {
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        tty->print("UseSharedSpaces: ");
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        tty->vprint_cr(msg, ap);
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      }
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    }
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    UseSharedSpaces = false;
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    assert(current_info() != NULL, "singleton must be registered");
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    current_info()->close();
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  }
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  va_end(ap);
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}
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// Fill in the fileMapInfo structure with data about this VM instance.
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// This method copies the vm version info into header_version.  If the version is too
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// long then a truncated version, which has a hash code appended to it, is copied.
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//
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// Using a template enables this method to verify that header_version is an array of
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// length JVM_IDENT_MAX.  This ensures that the code that writes to the CDS file and
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// the code that reads the CDS file will both use the same size buffer.  Hence, will
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// use identical truncation.  This is necessary for matching of truncated versions.
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template <int N> static void get_header_version(char (&header_version) [N]) {
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  assert(N == JVM_IDENT_MAX, "Bad header_version size");
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  const char *vm_version = VM_Version::internal_vm_info_string();
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  const int version_len = (int)strlen(vm_version);
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  if (version_len < (JVM_IDENT_MAX-1)) {
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    strcpy(header_version, vm_version);
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  } else {
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    // Get the hash value.  Use a static seed because the hash needs to return the same
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    // value over multiple jvm invocations.
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    unsigned int hash = AltHashing::murmur3_32(8191, (const jbyte*)vm_version, version_len);
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    // Truncate the ident, saving room for the 8 hex character hash value.
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    strncpy(header_version, vm_version, JVM_IDENT_MAX-9);
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    // Append the hash code as eight hex digits.
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    sprintf(&header_version[JVM_IDENT_MAX-9], "%08x", hash);
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    header_version[JVM_IDENT_MAX-1] = 0;  // Null terminate.
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  }
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}
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FileMapInfo::FileMapInfo() {
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  assert(_current_info == NULL, "must be singleton"); // not thread safe
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  _current_info = this;
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  memset(this, 0, sizeof(FileMapInfo));
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  _file_offset = 0;
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  _file_open = false;
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  _header = SharedClassUtil::allocate_file_map_header();
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  _header->_version = _invalid_version;
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}
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FileMapInfo::~FileMapInfo() {
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  assert(_current_info == this, "must be singleton"); // not thread safe
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  _current_info = NULL;
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}
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void FileMapInfo::populate_header(size_t alignment) {
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  _header->populate(this, alignment);
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}
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size_t FileMapInfo::FileMapHeader::data_size() {
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  return SharedClassUtil::file_map_header_size() - sizeof(FileMapInfo::FileMapHeaderBase);
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}
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void FileMapInfo::FileMapHeader::populate(FileMapInfo* mapinfo, size_t alignment) {
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  _magic = 0xf00baba2;
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  _version = _current_version;
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  _alignment = alignment;
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  _obj_alignment = ObjectAlignmentInBytes;
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  _compact_strings = CompactStrings;
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  _narrow_oop_mode = Universe::narrow_oop_mode();
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  _narrow_oop_shift = Universe::narrow_oop_shift();
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  _max_heap_size = MaxHeapSize;
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  _narrow_klass_base = Universe::narrow_klass_base();
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  _narrow_klass_shift = Universe::narrow_klass_shift();
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  _classpath_entry_table_size = mapinfo->_classpath_entry_table_size;
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  _classpath_entry_table = mapinfo->_classpath_entry_table;
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  _classpath_entry_size = mapinfo->_classpath_entry_size;
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  // The following fields are for sanity checks for whether this archive
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  // will function correctly with this JVM and the bootclasspath it's
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  // invoked with.
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  // JVM version string ... changes on each build.
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  get_header_version(_jvm_ident);
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}
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void FileMapInfo::allocate_classpath_entry_table() {
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  int bytes = 0;
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  int count = 0;
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  char* strptr = NULL;
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  char* strptr_max = NULL;
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  Thread* THREAD = Thread::current();
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  ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data();
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  size_t entry_size = SharedClassUtil::shared_class_path_entry_size();
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  for (int pass=0; pass<2; pass++) {
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    // Process the modular java runtime image first
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    ClassPathEntry* jrt_entry = ClassLoader::get_jrt_entry();
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    assert(jrt_entry != NULL,
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           "No modular java runtime image present when allocating the CDS classpath entry table");
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    const char *name = jrt_entry->name();
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    int name_bytes = (int)(strlen(name) + 1);
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    if (pass == 0) {
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      count++;
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      bytes += (int)entry_size;
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      bytes += name_bytes;
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      log_info(class, path)("add main shared path for modular java runtime image %s", name);
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    } else {
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      // The java runtime image is always in slot 0 on the shared class path.
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      SharedClassPathEntry* ent = shared_classpath(0);
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      struct stat st;
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      if (os::stat(name, &st) == 0) {
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        ent->_timestamp = st.st_mtime;
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        ent->_filesize = st.st_size;
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      }
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      if (ent->_filesize == 0) {
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        // unknown
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        ent->_filesize = -2;
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      }
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      ent->_name = strptr;
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      assert(strptr + name_bytes <= strptr_max, "miscalculated buffer size");
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      strncpy(strptr, name, (size_t)name_bytes); // name_bytes includes trailing 0.
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      strptr += name_bytes;
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    }
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    // Walk the appended entries, which includes the entries added for the classpath.
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    ClassPathEntry *cpe = ClassLoader::classpath_entry(1);
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    // Since the java runtime image is always in slot 0 on the shared class path, the
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    // appended entries are started at slot 1 immediately after.
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    for (int cur_entry = 1 ; cpe != NULL; cpe = cpe->next(), cur_entry++) {
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      const char *name = cpe->name();
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      int name_bytes = (int)(strlen(name) + 1);
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      assert(!cpe->is_jrt(), "A modular java runtime image is present on the list of appended entries");
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      if (pass == 0) {
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        count ++;
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        bytes += (int)entry_size;
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        bytes += name_bytes;
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        log_info(class, path)("add main shared path (%s) %s", (cpe->is_jar_file() ? "jar" : "dir"), name);
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      } else {
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        SharedClassPathEntry* ent = shared_classpath(cur_entry);
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        if (cpe->is_jar_file()) {
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          struct stat st;
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          if (os::stat(name, &st) != 0) {
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            // The file/dir must exist, or it would not have been added
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            // into ClassLoader::classpath_entry().
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            //
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            // If we can't access a jar file in the boot path, then we can't
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            // make assumptions about where classes get loaded from.
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            FileMapInfo::fail_stop("Unable to open jar file %s.", name);
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          }
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          EXCEPTION_MARK; // The following call should never throw, but would exit VM on error.
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          SharedClassUtil::update_shared_classpath(cpe, ent, st.st_mtime, st.st_size, THREAD);
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        } else {
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          struct stat st;
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          if (os::stat(name, &st) == 0) {
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            if ((st.st_mode & S_IFDIR) == S_IFDIR) {
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              if (!os::dir_is_empty(name)) {
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                ClassLoader::exit_with_path_failure(
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   268
                  "Cannot have non-empty directory in archived classpaths", name);
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              }
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              ent->_filesize = -1;
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            }
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          }
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          if (ent->_filesize == 0) {
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            // unknown
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            ent->_filesize = -2;
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          }
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        }
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        ent->_name = strptr;
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        if (strptr + name_bytes <= strptr_max) {
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          strncpy(strptr, name, (size_t)name_bytes); // name_bytes includes trailing 0.
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          strptr += name_bytes;
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        } else {
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          assert(0, "miscalculated buffer size");
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        }
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      }
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    }
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    if (pass == 0) {
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      EXCEPTION_MARK; // The following call should never throw, but would exit VM on error.
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      Array<u8>* arr = MetadataFactory::new_array<u8>(loader_data, (bytes + 7)/8, THREAD);
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      strptr = (char*)(arr->data());
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      strptr_max = strptr + bytes;
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      SharedClassPathEntry* table = (SharedClassPathEntry*)strptr;
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      strptr += entry_size * count;
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   295
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      _classpath_entry_table_size = count;
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      _classpath_entry_table = table;
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      _classpath_entry_size = entry_size;
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    }
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  }
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}
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bool FileMapInfo::validate_classpath_entry_table() {
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  _validating_classpath_entry_table = true;
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  int count = _header->_classpath_entry_table_size;
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   307
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  _classpath_entry_table = _header->_classpath_entry_table;
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diff changeset
   309
  _classpath_entry_size = _header->_classpath_entry_size;
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   310
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   311
  for (int i=0; i<count; i++) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   312
    SharedClassPathEntry* ent = shared_classpath(i);
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   313
    struct stat st;
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   314
    const char* name = ent->_name;
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   315
    bool ok = true;
38151
fffedc5e5cf8 8154110: Update class* and safepoint* logging subsystems
mockner
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   316
    log_info(class, path)("checking shared classpath entry: %s", name);
26135
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   317
    if (os::stat(name, &st) != 0) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   318
      fail_continue("Required classpath entry does not exist: %s", name);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   319
      ok = false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   320
    } else if (ent->is_dir()) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
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diff changeset
   321
      if (!os::dir_is_empty(name)) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   322
        fail_continue("directory is not empty: %s", name);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   323
        ok = false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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diff changeset
   324
      }
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36364
diff changeset
   325
    } else if (ent->is_jar_or_bootimage()) {
26135
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   326
      if (ent->_timestamp != st.st_mtime ||
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
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diff changeset
   327
          ent->_filesize != st.st_size) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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diff changeset
   328
        ok = false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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parents: 25715
diff changeset
   329
        if (PrintSharedArchiveAndExit) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
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diff changeset
   330
          fail_continue(ent->_timestamp != st.st_mtime ?
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
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diff changeset
   331
                        "Timestamp mismatch" :
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   332
                        "File size mismatch");
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   333
        } else {
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36364
diff changeset
   334
          fail_continue("A jar/jimage file is not the one used while building"
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
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diff changeset
   335
                        " the shared archive file: %s", name);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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diff changeset
   336
        }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   337
      }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   338
    }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   339
    if (ok) {
38151
fffedc5e5cf8 8154110: Update class* and safepoint* logging subsystems
mockner
parents: 38108
diff changeset
   340
      log_info(class, path)("ok");
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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diff changeset
   341
    } else if (!PrintSharedArchiveAndExit) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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diff changeset
   342
      _validating_classpath_entry_table = false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
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diff changeset
   343
      return false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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diff changeset
   344
    }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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diff changeset
   345
  }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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diff changeset
   346
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   347
  _classpath_entry_table_size = _header->_classpath_entry_table_size;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   348
  _validating_classpath_entry_table = false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   349
  return true;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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diff changeset
   350
}
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   351
1
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   352
489c9b5090e2 Initial load
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   353
// Read the FileMapInfo information from the file.
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   354
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   355
bool FileMapInfo::init_from_file(int fd) {
26135
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   356
  size_t sz = _header->data_size();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   357
  char* addr = _header->data();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   358
  size_t n = os::read(fd, addr, (unsigned int)sz);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
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   359
  if (n != sz) {
1
489c9b5090e2 Initial load
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   360
    fail_continue("Unable to read the file header.");
489c9b5090e2 Initial load
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diff changeset
   361
    return false;
489c9b5090e2 Initial load
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parents:
diff changeset
   362
  }
26135
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parents: 25715
diff changeset
   363
  if (_header->_version != current_version()) {
1
489c9b5090e2 Initial load
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parents:
diff changeset
   364
    fail_continue("The shared archive file has the wrong version.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   365
    return false;
489c9b5090e2 Initial load
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parents:
diff changeset
   366
  }
489c9b5090e2 Initial load
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parents:
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   367
  _file_offset = (long)n;
26135
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iklam
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diff changeset
   368
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   369
  size_t info_size = _header->_paths_misc_info_size;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   370
  _paths_misc_info = NEW_C_HEAP_ARRAY_RETURN_NULL(char, info_size, mtClass);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   371
  if (_paths_misc_info == NULL) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   372
    fail_continue("Unable to read the file header.");
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   373
    return false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   374
  }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   375
  n = os::read(fd, _paths_misc_info, (unsigned int)info_size);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   376
  if (n != info_size) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   377
    fail_continue("Unable to read the shared path info header.");
27880
afb974a04396 8060074: os::free() takes MemoryTrackingLevel but doesn't need it
coleenp
parents: 27025
diff changeset
   378
    FREE_C_HEAP_ARRAY(char, _paths_misc_info);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   379
    _paths_misc_info = NULL;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   380
    return false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   381
  }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   382
27025
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   383
  size_t len = lseek(fd, 0, SEEK_END);
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   384
  struct FileMapInfo::FileMapHeader::space_info* si =
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   385
    &_header->_space[MetaspaceShared::mc];
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   386
  if (si->_file_offset >= len || len - si->_file_offset < si->_used) {
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   387
    fail_continue("The shared archive file has been truncated.");
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   388
    return false;
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   389
  }
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   390
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   391
  _file_offset += (long)n;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   392
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   393
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   394
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
// Read the FileMapInfo information from the file.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
bool FileMapInfo::open_for_read() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
  _full_path = Arguments::GetSharedArchivePath();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
  int fd = open(_full_path, O_RDONLY | O_BINARY, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
  if (fd < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
    if (errno == ENOENT) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
      // Not locating the shared archive is ok.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
      fail_continue("Specified shared archive not found.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
      fail_continue("Failed to open shared archive file (%s).",
37113
5a33bf5089ac 8148425: strerror() function is not thread-safe
stuefe
parents: 36364
diff changeset
   406
                    os::strerror(errno));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  _fd = fd;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
  _file_open = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
// Write the FileMapInfo information to the file.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
void FileMapInfo::open_for_write() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
 _full_path = Arguments::GetSharedArchivePath();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
  if (PrintSharedSpaces) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
    tty->print_cr("Dumping shared data to file: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
    tty->print_cr("   %s", _full_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
15461
e3acbfdabafa 7197672: There are issues with shared data on windows
hseigel
parents: 15101
diff changeset
   426
#ifdef _WINDOWS  // On Windows, need WRITE permission to remove the file.
e3acbfdabafa 7197672: There are issues with shared data on windows
hseigel
parents: 15101
diff changeset
   427
  chmod(_full_path, _S_IREAD | _S_IWRITE);
e3acbfdabafa 7197672: There are issues with shared data on windows
hseigel
parents: 15101
diff changeset
   428
#endif
e3acbfdabafa 7197672: There are issues with shared data on windows
hseigel
parents: 15101
diff changeset
   429
e3acbfdabafa 7197672: There are issues with shared data on windows
hseigel
parents: 15101
diff changeset
   430
  // Use remove() to delete the existing file because, on Unix, this will
e3acbfdabafa 7197672: There are issues with shared data on windows
hseigel
parents: 15101
diff changeset
   431
  // allow processes that have it open continued access to the file.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
  remove(_full_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
  int fd = open(_full_path, O_RDWR | O_CREAT | O_TRUNC | O_BINARY, 0444);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
  if (fd < 0) {
28950
693ae3d5e1ff 8072694: Need errno info when CDS archive creation fails
hseigel
parents: 28023
diff changeset
   435
    fail_stop("Unable to create shared archive file %s: (%s).", _full_path,
37113
5a33bf5089ac 8148425: strerror() function is not thread-safe
stuefe
parents: 36364
diff changeset
   436
              os::strerror(errno));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
  _fd = fd;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
  _file_offset = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
  _file_open = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
// Write the header to the file, seek to the next allocation boundary.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
void FileMapInfo::write_header() {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   447
  int info_size = ClassLoader::get_shared_paths_misc_info_size();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   448
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   449
  _header->_paths_misc_info_size = info_size;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   450
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   451
  align_file_position();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   452
  size_t sz = _header->data_size();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   453
  char* addr = _header->data();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   454
  write_bytes(addr, (int)sz); // skip the C++ vtable
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   455
  write_bytes(ClassLoader::get_shared_paths_misc_info(), info_size);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   456
  align_file_position();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
// Dump shared spaces to file.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   462
void FileMapInfo::write_space(int i, Metaspace* space, bool read_only) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
  align_file_position();
17109
90e6c31bbbe4 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 16430
diff changeset
   464
  size_t used = space->used_bytes_slow(Metaspace::NonClassType);
90e6c31bbbe4 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 16430
diff changeset
   465
  size_t capacity = space->capacity_bytes_slow(Metaspace::NonClassType);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   466
  struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[i];
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   467
  write_region(i, (char*)space->bottom(), used, capacity, read_only, false);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
// Dump region to file.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
void FileMapInfo::write_region(int region, char* base, size_t size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
                               size_t capacity, bool read_only,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
                               bool allow_exec) {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   476
  struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[region];
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
  if (_file_open) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
    guarantee(si->_file_offset == _file_offset, "file offset mismatch.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
    if (PrintSharedSpaces) {
33148
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 32589
diff changeset
   481
      tty->print_cr("Shared file region %d: " SIZE_FORMAT_HEX_W(6) " bytes, addr " INTPTR_FORMAT
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 32589
diff changeset
   482
                    " file offset " SIZE_FORMAT_HEX_W(6), region, size, p2i(base), _file_offset);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
    si->_file_offset = _file_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
  }
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   487
  if (MetaspaceShared::is_string_region(region)) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   488
    assert((base - (char*)Universe::narrow_oop_base()) % HeapWordSize == 0, "Sanity");
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   489
    if (base != NULL) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   490
      si->_addr._offset = (intx)oopDesc::encode_heap_oop_not_null((oop)base);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   491
    } else {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   492
      si->_addr._offset = 0;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   493
    }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   494
  } else {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   495
    si->_addr._base = base;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   496
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
  si->_used = size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
  si->_capacity = capacity;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
  si->_read_only = read_only;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
  si->_allow_exec = allow_exec;
27025
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   501
  si->_crc = ClassLoader::crc32(0, base, (jint)size);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
  write_bytes_aligned(base, (int)size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   505
// Write the string space. The string space contains one or multiple GC(G1) regions.
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   506
// When the total string space size is smaller than one GC region of the dump time,
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   507
// only one string region is used for shared strings.
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   508
//
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   509
// If the total string space size is bigger than one GC region, there would be more
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   510
// than one GC regions allocated for shared strings. The first/bottom GC region might
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   511
// be a partial GC region with the empty portion at the higher address within that region.
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   512
// The non-empty portion of the first region is written into the archive as one string
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   513
// region. The rest are consecutive full GC regions if they exist, which can be written
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   514
// out in one chunk as another string region.
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   515
void FileMapInfo::write_string_regions(GrowableArray<MemRegion> *regions) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   516
  for (int i = MetaspaceShared::first_string;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   517
           i < MetaspaceShared::first_string + MetaspaceShared::max_strings; i++) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   518
    char* start = NULL;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   519
    size_t size = 0;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   520
    if (regions->is_nonempty()) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   521
      if (i == MetaspaceShared::first_string) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   522
        MemRegion first = regions->first();
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   523
        start = (char*)first.start();
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   524
        size = first.byte_size();
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   525
      } else {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   526
        int len = regions->length();
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   527
        if (len > 1) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   528
          start = (char*)regions->at(1).start();
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   529
          size = (char*)regions->at(len - 1).end() - start;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   530
        }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   531
      }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   532
    }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   533
    write_region(i, start, size, size, false, false);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   534
  }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   535
}
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   536
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
// Dump bytes to file -- at the current file position.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
void FileMapInfo::write_bytes(const void* buffer, int nbytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
  if (_file_open) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
    int n = ::write(_fd, buffer, nbytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
    if (n != nbytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
      // It is dangerous to leave the corrupted shared archive file around,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
      // close and remove the file. See bug 6372906.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
      close();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
      remove(_full_path);
26296
fd6180a0e0ab 8055754: filemap.cpp does not compile with clang
sla
parents: 26135
diff changeset
   548
      fail_stop("Unable to write to shared archive file.");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  _file_offset += nbytes;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
// Align file position to an allocation unit boundary.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
void FileMapInfo::align_file_position() {
27025
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   558
  size_t new_file_offset = align_size_up(_file_offset,
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   559
                                         os::vm_allocation_granularity());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
  if (new_file_offset != _file_offset) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
    _file_offset = new_file_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
    if (_file_open) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
      // Seek one byte back from the target and write a byte to insure
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
      // that the written file is the correct length.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
      _file_offset -= 1;
27025
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   566
      if (lseek(_fd, (long)_file_offset, SEEK_SET) < 0) {
26296
fd6180a0e0ab 8055754: filemap.cpp does not compile with clang
sla
parents: 26135
diff changeset
   567
        fail_stop("Unable to seek.");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
      char zero = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
      write_bytes(&zero, 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
// Dump bytes to file -- at the current file position.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
void FileMapInfo::write_bytes_aligned(const void* buffer, int nbytes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  align_file_position();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
  write_bytes(buffer, nbytes);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
  align_file_position();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
// Close the shared archive file.  This does NOT unmap mapped regions.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
void FileMapInfo::close() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
  if (_file_open) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
    if (::close(_fd) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
      fail_stop("Unable to close the shared archive file.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
    _file_open = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
    _fd = -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
// JVM/TI RedefineClasses() support:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
// Remap the shared readonly space to shared readwrite, private.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
bool FileMapInfo::remap_shared_readonly_as_readwrite() {
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   601
  int idx = 0;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   602
  struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[idx];
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
  if (!si->_read_only) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
    // the space is already readwrite so we are done
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
  size_t used = si->_used;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
  size_t size = align_size_up(used, os::vm_allocation_granularity());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
  if (!open_for_read()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
  }
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   612
  char *addr = _header->region_addr(idx);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
  char *base = os::remap_memory(_fd, _full_path, si->_file_offset,
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   614
                                addr, size, false /* !read_only */,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
                                si->_allow_exec);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
  close();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
  if (base == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
    fail_continue("Unable to remap shared readonly space (errno=%d).", errno);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
  }
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   621
  if (base != addr) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
    fail_continue("Unable to remap shared readonly space at required address.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
  si->_read_only = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   629
// Map the whole region at once, assumed to be allocated contiguously.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   630
ReservedSpace FileMapInfo::reserve_shared_memory() {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   631
  struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[0];
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   632
  char* requested_addr = _header->region_addr(0);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   633
19319
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
   634
  size_t size = FileMapInfo::shared_spaces_size();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   635
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   636
  // Reserve the space first, then map otherwise map will go right over some
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   637
  // other reserved memory (like the code cache).
19319
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
   638
  ReservedSpace rs(size, os::vm_allocation_granularity(), false, requested_addr);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   639
  if (!rs.is_reserved()) {
33148
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 32589
diff changeset
   640
    fail_continue("Unable to reserve shared space at required address "
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 32589
diff changeset
   641
                  INTPTR_FORMAT, p2i(requested_addr));
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   642
    return rs;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   643
  }
14120
7d298141c258 7199092: NMT: NMT needs to deal overlapped virtual memory ranges
zgu
parents: 13728
diff changeset
   644
  // the reserved virtual memory is for mapping class data sharing archive
15100
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14577
diff changeset
   645
  MemTracker::record_virtual_memory_type((address)rs.base(), mtClassShared);
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14577
diff changeset
   646
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   647
  return rs;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   648
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
// Memory map a region in the address space.
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   651
static const char* shared_region_name[] = { "ReadOnly", "ReadWrite", "MiscData", "MiscCode",
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   652
                                            "String1", "String2" };
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   654
char* FileMapInfo::map_region(int i) {
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   655
  assert(!MetaspaceShared::is_string_region(i), "sanity");
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   656
  struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[i];
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
  size_t used = si->_used;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   658
  size_t alignment = os::vm_allocation_granularity();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   659
  size_t size = align_size_up(used, alignment);
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   660
  char *requested_addr = _header->region_addr(i);
31332
dc17890f352d 8054386: Allow Java debugging when CDS is enabled
cjplummer
parents: 28950
diff changeset
   661
dc17890f352d 8054386: Allow Java debugging when CDS is enabled
cjplummer
parents: 28950
diff changeset
   662
  // If a tool agent is in use (debugging enabled), we must map the address space RW
dc17890f352d 8054386: Allow Java debugging when CDS is enabled
cjplummer
parents: 28950
diff changeset
   663
  if (JvmtiExport::can_modify_any_class() || JvmtiExport::can_walk_any_space()) {
31375
aa5ecd9a5716 8087153: EXCEPTION_ACCESS_VIOLATION when CDS RO section vanished on win32
cjplummer
parents: 31364
diff changeset
   664
    si->_read_only = false;
31332
dc17890f352d 8054386: Allow Java debugging when CDS is enabled
cjplummer
parents: 28950
diff changeset
   665
  }
dc17890f352d 8054386: Allow Java debugging when CDS is enabled
cjplummer
parents: 28950
diff changeset
   666
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   667
  // map the contents of the CDS archive in this memory
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
  char *base = os::map_memory(_fd, _full_path, si->_file_offset,
31375
aa5ecd9a5716 8087153: EXCEPTION_ACCESS_VIOLATION when CDS RO section vanished on win32
cjplummer
parents: 31364
diff changeset
   669
                              requested_addr, size, si->_read_only,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
                              si->_allow_exec);
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   671
  if (base == NULL || base != requested_addr) {
26296
fd6180a0e0ab 8055754: filemap.cpp does not compile with clang
sla
parents: 26135
diff changeset
   672
    fail_continue("Unable to map %s shared space at required address.", shared_region_name[i]);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
  }
15100
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14577
diff changeset
   675
#ifdef _WINDOWS
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14577
diff changeset
   676
  // This call is Windows-only because the memory_type gets recorded for the other platforms
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14577
diff changeset
   677
  // in method FileMapInfo::reserve_shared_memory(), which is not called on Windows.
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14577
diff changeset
   678
  MemTracker::record_virtual_memory_type((address)base, mtClassShared);
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14577
diff changeset
   679
#endif
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   680
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
  return base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
31360
87d3a62c7e35 8098815: Assertion failure in CDS shared string archive support on Windows
iklam
parents: 31345
diff changeset
   684
static MemRegion *string_ranges = NULL;
87d3a62c7e35 8098815: Assertion failure in CDS shared string archive support on Windows
iklam
parents: 31345
diff changeset
   685
static int num_ranges = 0;
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   686
bool FileMapInfo::map_string_regions() {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   687
#if INCLUDE_ALL_GCS
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   688
  if (UseG1GC && UseCompressedOops && UseCompressedClassPointers) {
31362
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   689
    // Check that all the narrow oop and klass encodings match the archive
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   690
    if (narrow_oop_mode() != Universe::narrow_oop_mode() ||
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   691
        narrow_oop_shift() != Universe::narrow_oop_shift() ||
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   692
        narrow_klass_base() != Universe::narrow_klass_base() ||
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   693
        narrow_klass_shift() != Universe::narrow_klass_shift()) {
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   694
      if (PrintSharedSpaces && _header->_space[MetaspaceShared::first_string]._used > 0) {
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   695
        tty->print_cr("Shared string data from the CDS archive is being ignored. "
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   696
                     "The current CompressedOops/CompressedClassPointers encoding differs from "
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   697
                     "that archived due to heap size change. The archive was dumped using max heap "
33148
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 32589
diff changeset
   698
                     "size " UINTX_FORMAT "M.", max_heap_size()/M);
31362
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   699
      }
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   700
    } else {
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   701
      string_ranges = new MemRegion[MetaspaceShared::max_strings];
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   702
      struct FileMapInfo::FileMapHeader::space_info* si;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   703
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   704
      for (int i = MetaspaceShared::first_string;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   705
               i < MetaspaceShared::first_string + MetaspaceShared::max_strings; i++) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   706
        si = &_header->_space[i];
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   707
        size_t used = si->_used;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   708
        if (used > 0) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   709
          size_t size = used;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   710
          char* requested_addr = (char*)((void*)oopDesc::decode_heap_oop_not_null(
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   711
                                                 (narrowOop)si->_addr._offset));
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   712
          string_ranges[num_ranges] = MemRegion((HeapWord*)requested_addr, size / HeapWordSize);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   713
          num_ranges ++;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   714
        }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   715
      }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   716
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   717
      if (num_ranges == 0) {
31362
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   718
        StringTable::ignore_shared_strings(true);
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   719
        return true; // no shared string data
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   720
      }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   721
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   722
      // Check that ranges are within the java heap
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   723
      if (!G1CollectedHeap::heap()->check_archive_addresses(string_ranges, num_ranges)) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   724
        fail_continue("Unable to allocate shared string space: range is not "
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   725
                      "within java heap.");
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   726
        return false;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   727
      }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   728
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   729
      // allocate from java heap
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   730
      if (!G1CollectedHeap::heap()->alloc_archive_regions(string_ranges, num_ranges)) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   731
        fail_continue("Unable to allocate shared string space: range is "
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   732
                      "already in use.");
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   733
        return false;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   734
      }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   735
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   736
      // Map the string data. No need to call MemTracker::record_virtual_memory_type()
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   737
      // for mapped string regions as they are part of the reserved java heap, which
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   738
      // is already recorded.
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   739
      for (int i = 0; i < num_ranges; i++) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   740
        si = &_header->_space[MetaspaceShared::first_string + i];
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   741
        char* addr = (char*)string_ranges[i].start();
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   742
        char* base = os::map_memory(_fd, _full_path, si->_file_offset,
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   743
                                    addr, string_ranges[i].byte_size(), si->_read_only,
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   744
                                    si->_allow_exec);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   745
        if (base == NULL || base != addr) {
32589
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   746
          // dealloc the string regions from java heap
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   747
          dealloc_string_regions();
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   748
          fail_continue("Unable to map shared string space at required address.");
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   749
          return false;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   750
        }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   751
      }
31362
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   752
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   753
      if (!verify_string_regions()) {
32589
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   754
        // dealloc the string regions from java heap
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   755
        dealloc_string_regions();
31362
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   756
        fail_continue("Shared string regions are corrupt");
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   757
        return false;
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   758
      }
31362
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   759
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   760
      // the shared string data is mapped successfully
8957ccbb5821 8098821: Crash in system dictionary initialization with shared strings
coleenp
parents: 31345
diff changeset
   761
      return true;
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   762
    }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   763
  } else {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   764
    if (PrintSharedSpaces && _header->_space[MetaspaceShared::first_string]._used > 0) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   765
      tty->print_cr("Shared string data from the CDS archive is being ignored. UseG1GC, "
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   766
                    "UseCompressedOops and UseCompressedClassPointers are required.");
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   767
    }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   768
  }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   769
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   770
  // if we get here, the shared string data is not mapped
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   771
  assert(string_ranges == NULL && num_ranges == 0, "sanity");
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   772
  StringTable::ignore_shared_strings(true);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   773
#endif
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   774
  return true;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   775
}
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   776
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   777
bool FileMapInfo::verify_string_regions() {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   778
  for (int i = MetaspaceShared::first_string;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   779
           i < MetaspaceShared::first_string + MetaspaceShared::max_strings; i++) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   780
    if (!verify_region_checksum(i)) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   781
      return false;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   782
    }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   783
  }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   784
  return true;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   785
}
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   786
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   787
void FileMapInfo::fixup_string_regions() {
32589
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   788
#if INCLUDE_ALL_GCS
31360
87d3a62c7e35 8098815: Assertion failure in CDS shared string archive support on Windows
iklam
parents: 31345
diff changeset
   789
  // If any string regions were found, call the fill routine to make them parseable.
87d3a62c7e35 8098815: Assertion failure in CDS shared string archive support on Windows
iklam
parents: 31345
diff changeset
   790
  // Note that string_ranges may be non-NULL even if no ranges were found.
87d3a62c7e35 8098815: Assertion failure in CDS shared string archive support on Windows
iklam
parents: 31345
diff changeset
   791
  if (num_ranges != 0) {
87d3a62c7e35 8098815: Assertion failure in CDS shared string archive support on Windows
iklam
parents: 31345
diff changeset
   792
    assert(string_ranges != NULL, "Null string_ranges array with non-zero count");
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   793
    G1CollectedHeap::heap()->fill_archive_regions(string_ranges, num_ranges);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   794
  }
32589
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   795
#endif
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   796
}
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   797
27025
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   798
bool FileMapInfo::verify_region_checksum(int i) {
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   799
  if (!VerifySharedSpaces) {
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   800
    return true;
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   801
  }
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   802
27025
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   803
  size_t sz = _header->_space[i]._used;
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   804
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   805
  if (sz == 0) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   806
    return true; // no data
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   807
  }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   808
  if (MetaspaceShared::is_string_region(i) && StringTable::shared_string_ignored()) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   809
    return true; // shared string data are not mapped
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   810
  }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   811
  const char* buf = _header->region_addr(i);
27025
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   812
  int crc = ClassLoader::crc32(0, buf, (jint)sz);
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   813
  if (crc != _header->_space[i]._crc) {
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   814
    fail_continue("Checksum verification failed.");
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   815
    return false;
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   816
  }
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   817
  return true;
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   818
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
// Unmap a memory region in the address space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
void FileMapInfo::unmap_region(int i) {
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   823
  assert(!MetaspaceShared::is_string_region(i), "sanity");
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   824
  struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[i];
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
  size_t used = si->_used;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
  size_t size = align_size_up(used, os::vm_allocation_granularity());
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   827
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   828
  if (used == 0) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   829
    return;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   830
  }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   831
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   832
  char* addr = _header->region_addr(i);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   833
  if (!os::unmap_memory(addr, size)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
    fail_stop("Unable to unmap shared space.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
32589
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   838
// dealloc the archived string region from java heap
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   839
void FileMapInfo::dealloc_string_regions() {
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   840
#if INCLUDE_ALL_GCS
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   841
  if (num_ranges > 0) {
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   842
    assert(string_ranges != NULL, "Null string_ranges array with non-zero count");
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   843
    G1CollectedHeap::heap()->dealloc_archive_regions(string_ranges, num_ranges);
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   844
  }
32589
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
   845
#endif
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   846
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
void FileMapInfo::assert_mark(bool check) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
  if (!check) {
26296
fd6180a0e0ab 8055754: filemap.cpp does not compile with clang
sla
parents: 26135
diff changeset
   850
    fail_stop("Mark mismatch while restoring from shared file.");
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
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
FileMapInfo* FileMapInfo::_current_info = NULL;
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   856
SharedClassPathEntry* FileMapInfo::_classpath_entry_table = NULL;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   857
int FileMapInfo::_classpath_entry_table_size = 0;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   858
size_t FileMapInfo::_classpath_entry_size = 0x1234baad;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   859
bool FileMapInfo::_validating_classpath_entry_table = false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
// Open the shared archive file, read and validate the header
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
// information (version, boot classpath, etc.).  If initialization
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
// fails, shared spaces are disabled and the file is closed. [See
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
// fail_continue.]
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   865
//
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   866
// Validation of the archive is done in two steps:
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   867
//
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   868
// [1] validate_header() - done here. This checks the header, including _paths_misc_info.
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   869
// [2] validate_classpath_entry_table - this is done later, because the table is in the RW
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   870
//     region of the archive, which is not mapped yet.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
bool FileMapInfo::initialize() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
  assert(UseSharedSpaces, "UseSharedSpaces expected.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
  if (!open_for_read()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
  init_from_file(_fd);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   879
  if (!validate_header()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   883
  SharedReadOnlySize =  _header->_space[0]._capacity;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   884
  SharedReadWriteSize = _header->_space[1]._capacity;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   885
  SharedMiscDataSize =  _header->_space[2]._capacity;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   886
  SharedMiscCodeSize =  _header->_space[3]._capacity;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   890
char* FileMapInfo::FileMapHeader::region_addr(int idx) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   891
  if (MetaspaceShared::is_string_region(idx)) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   892
    return (char*)((void*)oopDesc::decode_heap_oop_not_null(
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   893
              (narrowOop)_space[idx]._addr._offset));
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   894
  } else {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   895
    return _space[idx]._addr._base;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   896
  }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   897
}
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   898
27025
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   899
int FileMapInfo::FileMapHeader::compute_crc() {
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   900
  char* header = data();
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   901
  // start computing from the field after _crc
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   902
  char* buf = (char*)&_crc + sizeof(int);
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   903
  size_t sz = data_size() - (buf - header);
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   904
  int crc = ClassLoader::crc32(0, buf, (jint)sz);
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   905
  return crc;
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   906
}
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   907
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   908
bool FileMapInfo::FileMapHeader::validate() {
27025
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   909
  if (VerifySharedSpaces && compute_crc() != _crc) {
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   910
    fail_continue("Header checksum verification failed.");
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   911
    return false;
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   912
  }
f4805f778f16 8044269: Analysis of archive files.
jiangli
parents: 26296
diff changeset
   913
40244
b3055c216762 8136930: Simplify use of module-system options by custom launchers
hseigel
parents: 40013
diff changeset
   914
  if (Arguments::get_patch_mod_prefix() != NULL) {
b3055c216762 8136930: Simplify use of module-system options by custom launchers
hseigel
parents: 40013
diff changeset
   915
    FileMapInfo::fail_continue("The shared archive file cannot be used with --patch-module.");
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36364
diff changeset
   916
    return false;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36364
diff changeset
   917
  }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36364
diff changeset
   918
40013
943cf01a6b82 8154239: -Xbootclasspath/a breaks exploded build
lfoltan
parents: 38207
diff changeset
   919
  if (!Arguments::has_jimage()) {
943cf01a6b82 8154239: -Xbootclasspath/a breaks exploded build
lfoltan
parents: 38207
diff changeset
   920
    FileMapInfo::fail_continue("The shared archive file cannot be used with an exploded module build.");
943cf01a6b82 8154239: -Xbootclasspath/a breaks exploded build
lfoltan
parents: 38207
diff changeset
   921
    return false;
943cf01a6b82 8154239: -Xbootclasspath/a breaks exploded build
lfoltan
parents: 38207
diff changeset
   922
  }
943cf01a6b82 8154239: -Xbootclasspath/a breaks exploded build
lfoltan
parents: 38207
diff changeset
   923
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   924
  if (_version != current_version()) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   925
    FileMapInfo::fail_continue("The shared archive file is the wrong version.");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
  }
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   928
  if (_magic != (int)0xf00baba2) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   929
    FileMapInfo::fail_continue("The shared archive file has a bad magic number.");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
  }
14577
fd68d810d86b 6924920: Class Data Sharing limit on the java version string can create failures
hseigel
parents: 14120
diff changeset
   932
  char header_version[JVM_IDENT_MAX];
fd68d810d86b 6924920: Class Data Sharing limit on the java version string can create failures
hseigel
parents: 14120
diff changeset
   933
  get_header_version(header_version);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   934
  if (strncmp(_jvm_ident, header_version, JVM_IDENT_MAX-1) != 0) {
38151
fffedc5e5cf8 8154110: Update class* and safepoint* logging subsystems
mockner
parents: 38108
diff changeset
   935
    log_info(class, path)("expected: %s", header_version);
fffedc5e5cf8 8154110: Update class* and safepoint* logging subsystems
mockner
parents: 38108
diff changeset
   936
    log_info(class, path)("actual:   %s", _jvm_ident);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   937
    FileMapInfo::fail_continue("The shared archive file was created by a different"
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   938
                  " version or build of HotSpot");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
  }
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   941
  if (_obj_alignment != ObjectAlignmentInBytes) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   942
    FileMapInfo::fail_continue("The shared archive file's ObjectAlignmentInBytes of %d"
33148
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 32589
diff changeset
   943
                  " does not equal the current ObjectAlignmentInBytes of " INTX_FORMAT ".",
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   944
                  _obj_alignment, ObjectAlignmentInBytes);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
  }
33628
09241459a8b8 8141132: JEP 254: Compact Strings
thartmann
parents: 33148
diff changeset
   947
  if (_compact_strings != CompactStrings) {
09241459a8b8 8141132: JEP 254: Compact Strings
thartmann
parents: 33148
diff changeset
   948
    FileMapInfo::fail_continue("The shared archive file's CompactStrings setting (%s)"
09241459a8b8 8141132: JEP 254: Compact Strings
thartmann
parents: 33148
diff changeset
   949
                  " does not equal the current CompactStrings setting (%s).",
09241459a8b8 8141132: JEP 254: Compact Strings
thartmann
parents: 33148
diff changeset
   950
                  _compact_strings ? "enabled" : "disabled",
09241459a8b8 8141132: JEP 254: Compact Strings
thartmann
parents: 33148
diff changeset
   951
                  CompactStrings   ? "enabled" : "disabled");
09241459a8b8 8141132: JEP 254: Compact Strings
thartmann
parents: 33148
diff changeset
   952
    return false;
09241459a8b8 8141132: JEP 254: Compact Strings
thartmann
parents: 33148
diff changeset
   953
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   958
bool FileMapInfo::validate_header() {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   959
  bool status = _header->validate();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   960
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   961
  if (status) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   962
    if (!ClassLoader::check_shared_paths_misc_info(_paths_misc_info, _header->_paths_misc_info_size)) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   963
      if (!PrintSharedArchiveAndExit) {
38151
fffedc5e5cf8 8154110: Update class* and safepoint* logging subsystems
mockner
parents: 38108
diff changeset
   964
        fail_continue("shared class paths mismatch (hint: enable -Xlog:class+path=info to diagnose the failure)");
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   965
        status = false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   966
      }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   967
    }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   968
  }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   969
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   970
  if (_paths_misc_info != NULL) {
27880
afb974a04396 8060074: os::free() takes MemoryTrackingLevel but doesn't need it
coleenp
parents: 27025
diff changeset
   971
    FREE_C_HEAP_ARRAY(char, _paths_misc_info);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   972
    _paths_misc_info = NULL;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   973
  }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   974
  return status;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   975
}
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
   976
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
// The following method is provided to see whether a given pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
// falls in the mapped shared space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
// Param:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
// p, The given pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
// Return:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
// True if the p is within the mapped shared space, otherwise, false.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
bool FileMapInfo::is_in_shared_space(const void* p) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 7405
diff changeset
   984
  for (int i = 0; i < MetaspaceShared::n_regions; i++) {
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   985
    char *base;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   986
    if (MetaspaceShared::is_string_region(i) && _header->_space[i]._used == 0) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   987
      continue;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   988
    }
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   989
    base = _header->region_addr(i);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
   990
    if (p >= base && p < base + _header->_space[i]._used) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
      return true;
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
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
}
18483
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17109
diff changeset
   997
37439
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
   998
// Check if a given address is within one of the shared regions (ro, rw, md, mc)
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
   999
bool FileMapInfo::is_in_shared_region(const void* p, int idx) {
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
  1000
  assert((idx >= MetaspaceShared::ro) && (idx <= MetaspaceShared::mc), "invalid region index");
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
  1001
  char* base = _header->region_addr(idx);
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
  1002
  if (p >= base && p < base + _header->_space[idx]._used) {
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
  1003
    return true;
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
  1004
  }
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
  1005
  return false;
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
  1006
}
e8970711113b 8145221: Use trampolines for i2i and i2c entries in Methods that are stored in CDS archive
ccheung
parents: 37179
diff changeset
  1007
18483
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17109
diff changeset
  1008
void FileMapInfo::print_shared_spaces() {
35061
be6025ebffea 8145092: Use Unified Logging for the GC logging
brutisso
parents: 34659
diff changeset
  1009
  tty->print_cr("Shared Spaces:");
18483
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17109
diff changeset
  1010
  for (int i = 0; i < MetaspaceShared::n_regions; i++) {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25715
diff changeset
  1011
    struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[i];
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
  1012
    char *base = _header->region_addr(i);
35061
be6025ebffea 8145092: Use Unified Logging for the GC logging
brutisso
parents: 34659
diff changeset
  1013
    tty->print("  %s " INTPTR_FORMAT "-" INTPTR_FORMAT,
18483
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17109
diff changeset
  1014
                        shared_region_name[i],
33148
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 32589
diff changeset
  1015
                        p2i(base), p2i(base + si->_used));
18483
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17109
diff changeset
  1016
  }
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17109
diff changeset
  1017
}
19319
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1018
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1019
// Unmap mapped regions of shared space.
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1020
void FileMapInfo::stop_sharing_and_unmap(const char* msg) {
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1021
  FileMapInfo *map_info = FileMapInfo::current_info();
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1022
  if (map_info) {
26296
fd6180a0e0ab 8055754: filemap.cpp does not compile with clang
sla
parents: 26135
diff changeset
  1023
    map_info->fail_continue("%s", msg);
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
  1024
    for (int i = 0; i < MetaspaceShared::num_non_strings; i++) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
  1025
      char *addr = map_info->_header->region_addr(i);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
  1026
      if (addr != NULL && !MetaspaceShared::is_string_region(i)) {
19319
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1027
        map_info->unmap_region(i);
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 31332
diff changeset
  1028
        map_info->_header->_space[i]._addr._base = NULL;
19319
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1029
      }
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1030
    }
32589
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
  1031
    // Dealloc the string regions only without unmapping. The string regions are part
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
  1032
    // of the java heap. Unmapping of the heap regions are managed by GC.
f86fb16fcab0 8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents: 31375
diff changeset
  1033
    map_info->dealloc_string_regions();
19319
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1034
  } else if (DumpSharedSpaces) {
26296
fd6180a0e0ab 8055754: filemap.cpp does not compile with clang
sla
parents: 26135
diff changeset
  1035
    fail_stop("%s", msg);
19319
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1036
  }
0ad35be0733a 8003424: Enable Class Data Sharing for CompressedOops
hseigel
parents: 18483
diff changeset
  1037
}