hotspot/src/share/vm/classfile/classLoader.cpp
author iveresov
Fri, 03 Sep 2010 17:51:07 -0700
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6953144: Tiered compilation Summary: Infrastructure for tiered compilation support (interpreter + c1 + c2) for 32 and 64 bit. Simple tiered policy implementation. Reviewed-by: kvn, never, phh, twisti
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/*
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 * Copyright (c) 1997, 2010, 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 "incls/_precompiled.incl"
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#include "incls/_classLoader.cpp.incl"
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// Entry points in zip.dll for loading zip/jar file entries
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typedef void * * (JNICALL *ZipOpen_t)(const char *name, char **pmsg);
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typedef void (JNICALL *ZipClose_t)(jzfile *zip);
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typedef jzentry* (JNICALL *FindEntry_t)(jzfile *zip, const char *name, jint *sizeP, jint *nameLen);
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typedef jboolean (JNICALL *ReadEntry_t)(jzfile *zip, jzentry *entry, unsigned char *buf, char *namebuf);
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typedef jboolean (JNICALL *ReadMappedEntry_t)(jzfile *zip, jzentry *entry, unsigned char **buf, char *namebuf);
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typedef jzentry* (JNICALL *GetNextEntry_t)(jzfile *zip, jint n);
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static ZipOpen_t         ZipOpen            = NULL;
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static ZipClose_t        ZipClose           = NULL;
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static FindEntry_t       FindEntry          = NULL;
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static ReadEntry_t       ReadEntry          = NULL;
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static ReadMappedEntry_t ReadMappedEntry    = NULL;
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static GetNextEntry_t    GetNextEntry       = NULL;
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static canonicalize_fn_t CanonicalizeEntry  = NULL;
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// Globals
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PerfCounter*    ClassLoader::_perf_accumulated_time = NULL;
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PerfCounter*    ClassLoader::_perf_classes_inited = NULL;
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PerfCounter*    ClassLoader::_perf_class_init_time = NULL;
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PerfCounter*    ClassLoader::_perf_class_init_selftime = NULL;
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PerfCounter*    ClassLoader::_perf_classes_verified = NULL;
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PerfCounter*    ClassLoader::_perf_class_verify_time = NULL;
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PerfCounter*    ClassLoader::_perf_class_verify_selftime = NULL;
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PerfCounter*    ClassLoader::_perf_classes_linked = NULL;
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PerfCounter*    ClassLoader::_perf_class_link_time = NULL;
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PerfCounter*    ClassLoader::_perf_class_link_selftime = NULL;
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PerfCounter*    ClassLoader::_perf_class_parse_time = NULL;
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PerfCounter*    ClassLoader::_perf_class_parse_selftime = NULL;
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PerfCounter*    ClassLoader::_perf_sys_class_lookup_time = NULL;
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PerfCounter*    ClassLoader::_perf_shared_classload_time = NULL;
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PerfCounter*    ClassLoader::_perf_sys_classload_time = NULL;
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PerfCounter*    ClassLoader::_perf_app_classload_time = NULL;
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PerfCounter*    ClassLoader::_perf_app_classload_selftime = NULL;
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PerfCounter*    ClassLoader::_perf_app_classload_count = NULL;
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PerfCounter*    ClassLoader::_perf_define_appclasses = NULL;
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PerfCounter*    ClassLoader::_perf_define_appclass_time = NULL;
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PerfCounter*    ClassLoader::_perf_define_appclass_selftime = NULL;
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PerfCounter*    ClassLoader::_perf_app_classfile_bytes_read = NULL;
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PerfCounter*    ClassLoader::_perf_sys_classfile_bytes_read = NULL;
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PerfCounter*    ClassLoader::_sync_systemLoaderLockContentionRate = NULL;
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PerfCounter*    ClassLoader::_sync_nonSystemLoaderLockContentionRate = NULL;
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PerfCounter*    ClassLoader::_sync_JVMFindLoadedClassLockFreeCounter = NULL;
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PerfCounter*    ClassLoader::_sync_JVMDefineClassLockFreeCounter = NULL;
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PerfCounter*    ClassLoader::_sync_JNIDefineClassLockFreeCounter = NULL;
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PerfCounter*    ClassLoader::_unsafe_defineClassCallCounter = NULL;
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PerfCounter*    ClassLoader::_isUnsyncloadClass = NULL;
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PerfCounter*    ClassLoader::_load_instance_class_failCounter = NULL;
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ClassPathEntry* ClassLoader::_first_entry         = NULL;
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ClassPathEntry* ClassLoader::_last_entry          = NULL;
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PackageHashtable* ClassLoader::_package_hash_table = NULL;
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// helper routines
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bool string_starts_with(const char* str, const char* str_to_find) {
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  size_t str_len = strlen(str);
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  size_t str_to_find_len = strlen(str_to_find);
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  if (str_to_find_len > str_len) {
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    return false;
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  }
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  return (strncmp(str, str_to_find, str_to_find_len) == 0);
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}
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bool string_ends_with(const char* str, const char* str_to_find) {
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  size_t str_len = strlen(str);
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  size_t str_to_find_len = strlen(str_to_find);
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  if (str_to_find_len > str_len) {
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    return false;
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  }
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  return (strncmp(str + (str_len - str_to_find_len), str_to_find, str_to_find_len) == 0);
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}
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MetaIndex::MetaIndex(char** meta_package_names, int num_meta_package_names) {
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  if (num_meta_package_names == 0) {
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    _meta_package_names = NULL;
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    _num_meta_package_names = 0;
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  } else {
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    _meta_package_names = NEW_C_HEAP_ARRAY(char*, num_meta_package_names);
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    _num_meta_package_names = num_meta_package_names;
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    memcpy(_meta_package_names, meta_package_names, num_meta_package_names * sizeof(char*));
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  }
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}
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MetaIndex::~MetaIndex() {
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  FREE_C_HEAP_ARRAY(char*, _meta_package_names);
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}
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bool MetaIndex::may_contain(const char* class_name) {
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  if ( _num_meta_package_names == 0) {
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    return false;
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  }
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  size_t class_name_len = strlen(class_name);
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  for (int i = 0; i < _num_meta_package_names; i++) {
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    char* pkg = _meta_package_names[i];
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    size_t pkg_len = strlen(pkg);
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    size_t min_len = MIN2(class_name_len, pkg_len);
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    if (!strncmp(class_name, pkg, min_len)) {
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      return true;
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    }
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  }
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  return false;
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}
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ClassPathEntry::ClassPathEntry() {
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  set_next(NULL);
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}
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bool ClassPathEntry::is_lazy() {
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  return false;
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}
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ClassPathDirEntry::ClassPathDirEntry(char* dir) : ClassPathEntry() {
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  _dir = NEW_C_HEAP_ARRAY(char, strlen(dir)+1);
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  strcpy(_dir, dir);
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}
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ClassFileStream* ClassPathDirEntry::open_stream(const char* name) {
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  // construct full path name
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  char path[JVM_MAXPATHLEN];
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  if (jio_snprintf(path, sizeof(path), "%s%s%s", _dir, os::file_separator(), name) == -1) {
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    return NULL;
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  }
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  // check if file exists
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  struct stat st;
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  if (os::stat(path, &st) == 0) {
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    // found file, open it
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    int file_handle = hpi::open(path, 0, 0);
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    if (file_handle != -1) {
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      // read contents into resource array
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      u1* buffer = NEW_RESOURCE_ARRAY(u1, st.st_size);
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      size_t num_read = os::read(file_handle, (char*) buffer, st.st_size);
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      // close file
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      hpi::close(file_handle);
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      // construct ClassFileStream
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      if (num_read == (size_t)st.st_size) {
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        if (UsePerfData) {
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          ClassLoader::perf_sys_classfile_bytes_read()->inc(num_read);
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        }
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        return new ClassFileStream(buffer, st.st_size, _dir);    // Resource allocated
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      }
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    }
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  }
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  return NULL;
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}
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ClassPathZipEntry::ClassPathZipEntry(jzfile* zip, const char* zip_name) : ClassPathEntry() {
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  _zip = zip;
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  _zip_name = NEW_C_HEAP_ARRAY(char, strlen(zip_name)+1);
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  strcpy(_zip_name, zip_name);
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}
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ClassPathZipEntry::~ClassPathZipEntry() {
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  if (ZipClose != NULL) {
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    (*ZipClose)(_zip);
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  }
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  FREE_C_HEAP_ARRAY(char, _zip_name);
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}
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ClassFileStream* ClassPathZipEntry::open_stream(const char* name) {
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  // enable call to C land
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  JavaThread* thread = JavaThread::current();
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  ThreadToNativeFromVM ttn(thread);
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  // check whether zip archive contains name
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  jint filesize, name_len;
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  jzentry* entry = (*FindEntry)(_zip, name, &filesize, &name_len);
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  if (entry == NULL) return NULL;
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  u1* buffer;
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  char name_buf[128];
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  char* filename;
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  if (name_len < 128) {
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    filename = name_buf;
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  } else {
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    filename = NEW_RESOURCE_ARRAY(char, name_len + 1);
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  }
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  // file found, get pointer to class in mmaped jar file.
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  if (ReadMappedEntry == NULL ||
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      !(*ReadMappedEntry)(_zip, entry, &buffer, filename)) {
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      // mmaped access not available, perhaps due to compression,
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      // read contents into resource array
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      buffer     = NEW_RESOURCE_ARRAY(u1, filesize);
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      if (!(*ReadEntry)(_zip, entry, buffer, filename)) return NULL;
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  }
3575
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  if (UsePerfData) {
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    ClassLoader::perf_sys_classfile_bytes_read()->inc(filesize);
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  }
1
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  // return result
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  return new ClassFileStream(buffer, filesize, _zip_name);    // Resource allocated
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}
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// invoke function for each entry in the zip file
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void ClassPathZipEntry::contents_do(void f(const char* name, void* context), void* context) {
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  JavaThread* thread = JavaThread::current();
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  HandleMark  handle_mark(thread);
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  ThreadToNativeFromVM ttn(thread);
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   233
  for (int n = 0; ; n++) {
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   234
    jzentry * ze = ((*GetNextEntry)(_zip, n));
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    if (ze == NULL) break;
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    (*f)(ze->name, context);
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  }
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}
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LazyClassPathEntry::LazyClassPathEntry(char* path, struct stat st) : ClassPathEntry() {
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  _path = strdup(path);
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  _st = st;
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  _meta_index = NULL;
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  _resolved_entry = NULL;
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}
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   246
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   247
bool LazyClassPathEntry::is_jar_file() {
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   248
  return ((_st.st_mode & S_IFREG) == S_IFREG);
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   249
}
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ClassPathEntry* LazyClassPathEntry::resolve_entry() {
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   252
  if (_resolved_entry != NULL) {
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    return (ClassPathEntry*) _resolved_entry;
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  }
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  ClassPathEntry* new_entry = NULL;
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   256
  ClassLoader::create_class_path_entry(_path, _st, &new_entry, false);
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   257
  assert(new_entry != NULL, "earlier code should have caught this");
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   258
  {
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   259
    ThreadCritical tc;
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   260
    if (_resolved_entry == NULL) {
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   261
      _resolved_entry = new_entry;
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   262
      return new_entry;
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   263
    }
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   264
  }
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   265
  assert(_resolved_entry != NULL, "bug in MT-safe resolution logic");
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   266
  delete new_entry;
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   267
  return (ClassPathEntry*) _resolved_entry;
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   268
}
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   269
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   270
ClassFileStream* LazyClassPathEntry::open_stream(const char* name) {
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   271
  if (_meta_index != NULL &&
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   272
      !_meta_index->may_contain(name)) {
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   273
    return NULL;
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   274
  }
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   275
  return resolve_entry()->open_stream(name);
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   276
}
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   277
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   278
bool LazyClassPathEntry::is_lazy() {
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   279
  return true;
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   280
}
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   281
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   282
static void print_meta_index(LazyClassPathEntry* entry,
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   283
                             GrowableArray<char*>& meta_packages) {
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   284
  tty->print("[Meta index for %s=", entry->name());
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   285
  for (int i = 0; i < meta_packages.length(); i++) {
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   286
    if (i > 0) tty->print(" ");
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   287
    tty->print(meta_packages.at(i));
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   288
  }
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   289
  tty->print_cr("]");
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   290
}
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   291
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   292
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   293
void ClassLoader::setup_meta_index() {
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   294
  // Set up meta index which allows us to open boot jars lazily if
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   295
  // class data sharing is enabled
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   296
  const char* known_version = "% VERSION 2";
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   297
  char* meta_index_path = Arguments::get_meta_index_path();
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   298
  char* meta_index_dir  = Arguments::get_meta_index_dir();
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   299
  FILE* file = fopen(meta_index_path, "r");
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   300
  int line_no = 0;
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   301
  if (file != NULL) {
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   302
    ResourceMark rm;
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   303
    LazyClassPathEntry* cur_entry = NULL;
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   304
    GrowableArray<char*> boot_class_path_packages(10);
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diff changeset
   305
    char package_name[256];
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diff changeset
   306
    bool skipCurrentJar = false;
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diff changeset
   307
    while (fgets(package_name, sizeof(package_name), file) != NULL) {
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parents:
diff changeset
   308
      ++line_no;
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parents:
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   309
      // Remove trailing newline
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   310
      package_name[strlen(package_name) - 1] = '\0';
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diff changeset
   311
      switch(package_name[0]) {
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diff changeset
   312
        case '%':
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diff changeset
   313
        {
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diff changeset
   314
          if ((line_no == 1) && (strcmp(package_name, known_version) != 0)) {
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diff changeset
   315
            if (TraceClassLoading && Verbose) {
489c9b5090e2 Initial load
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parents:
diff changeset
   316
              tty->print("[Unsupported meta index version]");
489c9b5090e2 Initial load
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parents:
diff changeset
   317
            }
489c9b5090e2 Initial load
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parents:
diff changeset
   318
            fclose(file);
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parents:
diff changeset
   319
            return;
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parents:
diff changeset
   320
          }
489c9b5090e2 Initial load
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parents:
diff changeset
   321
        }
489c9b5090e2 Initial load
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parents:
diff changeset
   322
489c9b5090e2 Initial load
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parents:
diff changeset
   323
        // These directives indicate jar files which contain only
489c9b5090e2 Initial load
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parents:
diff changeset
   324
        // classes, only non-classfile resources, or a combination of
489c9b5090e2 Initial load
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diff changeset
   325
        // the two. See src/share/classes/sun/misc/MetaIndex.java and
489c9b5090e2 Initial load
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parents:
diff changeset
   326
        // make/tools/MetaIndex/BuildMetaIndex.java in the J2SE
489c9b5090e2 Initial load
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parents:
diff changeset
   327
        // workspace.
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parents:
diff changeset
   328
        case '#':
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parents:
diff changeset
   329
        case '!':
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parents:
diff changeset
   330
        case '@':
489c9b5090e2 Initial load
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parents:
diff changeset
   331
        {
489c9b5090e2 Initial load
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parents:
diff changeset
   332
          // Hand off current packages to current lazy entry (if any)
489c9b5090e2 Initial load
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parents:
diff changeset
   333
          if ((cur_entry != NULL) &&
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parents:
diff changeset
   334
              (boot_class_path_packages.length() > 0)) {
489c9b5090e2 Initial load
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parents:
diff changeset
   335
            if (TraceClassLoading && Verbose) {
489c9b5090e2 Initial load
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parents:
diff changeset
   336
              print_meta_index(cur_entry, boot_class_path_packages);
489c9b5090e2 Initial load
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parents:
diff changeset
   337
            }
489c9b5090e2 Initial load
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diff changeset
   338
            MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0),
489c9b5090e2 Initial load
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parents:
diff changeset
   339
                                             boot_class_path_packages.length());
489c9b5090e2 Initial load
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parents:
diff changeset
   340
            cur_entry->set_meta_index(index);
489c9b5090e2 Initial load
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parents:
diff changeset
   341
          }
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diff changeset
   342
          cur_entry = NULL;
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parents:
diff changeset
   343
          boot_class_path_packages.clear();
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diff changeset
   344
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parents:
diff changeset
   345
          // Find lazy entry corresponding to this jar file
489c9b5090e2 Initial load
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parents:
diff changeset
   346
          for (ClassPathEntry* entry = _first_entry; entry != NULL; entry = entry->next()) {
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parents:
diff changeset
   347
            if (entry->is_lazy() &&
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parents:
diff changeset
   348
                string_starts_with(entry->name(), meta_index_dir) &&
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parents:
diff changeset
   349
                string_ends_with(entry->name(), &package_name[2])) {
489c9b5090e2 Initial load
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parents:
diff changeset
   350
              cur_entry = (LazyClassPathEntry*) entry;
489c9b5090e2 Initial load
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diff changeset
   351
              break;
489c9b5090e2 Initial load
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parents:
diff changeset
   352
            }
489c9b5090e2 Initial load
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parents:
diff changeset
   353
          }
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parents:
diff changeset
   354
489c9b5090e2 Initial load
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parents:
diff changeset
   355
          // If the first character is '@', it indicates the following jar
489c9b5090e2 Initial load
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parents:
diff changeset
   356
          // file is a resource only jar file in which case, we should skip
489c9b5090e2 Initial load
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parents:
diff changeset
   357
          // reading the subsequent entries since the resource loading is
489c9b5090e2 Initial load
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parents:
diff changeset
   358
          // totally handled by J2SE side.
489c9b5090e2 Initial load
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parents:
diff changeset
   359
          if (package_name[0] == '@') {
489c9b5090e2 Initial load
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parents:
diff changeset
   360
            if (cur_entry != NULL) {
489c9b5090e2 Initial load
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parents:
diff changeset
   361
              cur_entry->set_meta_index(new MetaIndex(NULL, 0));
489c9b5090e2 Initial load
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parents:
diff changeset
   362
            }
489c9b5090e2 Initial load
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parents:
diff changeset
   363
            cur_entry = NULL;
489c9b5090e2 Initial load
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parents:
diff changeset
   364
            skipCurrentJar = true;
489c9b5090e2 Initial load
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parents:
diff changeset
   365
          } else {
489c9b5090e2 Initial load
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parents:
diff changeset
   366
            skipCurrentJar = false;
489c9b5090e2 Initial load
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parents:
diff changeset
   367
          }
489c9b5090e2 Initial load
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parents:
diff changeset
   368
489c9b5090e2 Initial load
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parents:
diff changeset
   369
          break;
489c9b5090e2 Initial load
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parents:
diff changeset
   370
        }
489c9b5090e2 Initial load
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parents:
diff changeset
   371
489c9b5090e2 Initial load
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parents:
diff changeset
   372
        default:
489c9b5090e2 Initial load
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parents:
diff changeset
   373
        {
489c9b5090e2 Initial load
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parents:
diff changeset
   374
          if (!skipCurrentJar && cur_entry != NULL) {
489c9b5090e2 Initial load
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parents:
diff changeset
   375
            char* new_name = strdup(package_name);
489c9b5090e2 Initial load
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parents:
diff changeset
   376
            boot_class_path_packages.append(new_name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   377
          }
489c9b5090e2 Initial load
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parents:
diff changeset
   378
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   379
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   380
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   381
    // Hand off current packages to current lazy entry (if any)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   382
    if ((cur_entry != NULL) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   383
        (boot_class_path_packages.length() > 0)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   384
      if (TraceClassLoading && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   385
        print_meta_index(cur_entry, boot_class_path_packages);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   386
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   387
      MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   388
                                       boot_class_path_packages.length());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   389
      cur_entry->set_meta_index(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   390
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   391
    fclose(file);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   392
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   393
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   394
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
void ClassLoader::setup_bootstrap_search_path() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
  assert(_first_entry == NULL, "should not setup bootstrap class search path twice");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
  char* sys_class_path = os::strdup(Arguments::get_sysclasspath());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
  if (TraceClassLoading && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
    tty->print_cr("[Bootstrap loader class path=%s]", sys_class_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
  int len = (int)strlen(sys_class_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
  int end = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  // Iterate over class path entries
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
  for (int start = 0; start < len; start = end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
    while (sys_class_path[end] && sys_class_path[end] != os::path_separator()[0]) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
      end++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
    char* path = NEW_C_HEAP_ARRAY(char, end-start+1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
    strncpy(path, &sys_class_path[start], end-start);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
    path[end-start] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
    update_class_path_entry_list(path, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
    FREE_C_HEAP_ARRAY(char, path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
    while (sys_class_path[end] == os::path_separator()[0]) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
      end++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
void ClassLoader::create_class_path_entry(char *path, struct stat st, ClassPathEntry **new_entry, bool lazy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
  JavaThread* thread = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  if (lazy) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
    *new_entry = new LazyClassPathEntry(path, st);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
  if ((st.st_mode & S_IFREG) == S_IFREG) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
    // Regular file, should be a zip file
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
    // Canonicalized filename
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
    char canonical_path[JVM_MAXPATHLEN];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
    if (!get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
      // This matches the classic VM
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
      EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
      THROW_MSG(vmSymbols::java_io_IOException(), "Bad pathname");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
    char* error_msg = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
    jzfile* zip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
      // enable call to C land
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
      ThreadToNativeFromVM ttn(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
      HandleMark hm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
      zip = (*ZipOpen)(canonical_path, &error_msg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
    if (zip != NULL && error_msg == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
      *new_entry = new ClassPathZipEntry(zip, path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
      if (TraceClassLoading) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
        tty->print_cr("[Opened %s]", path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
      ResourceMark rm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
      char *msg;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
      if (error_msg == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
        msg = NEW_RESOURCE_ARRAY(char, strlen(path) + 128); ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
        jio_snprintf(msg, strlen(path) + 127, "error in opening JAR file %s", path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
        int len = (int)(strlen(path) + strlen(error_msg) + 128);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
        msg = NEW_RESOURCE_ARRAY(char, len); ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
        jio_snprintf(msg, len - 1, "error in opening JAR file <%s> %s", error_msg, path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
      EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
      THROW_MSG(vmSymbols::java_lang_ClassNotFoundException(), msg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
    // Directory
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
    *new_entry = new ClassPathDirEntry(path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
    if (TraceClassLoading) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
      tty->print_cr("[Path %s]", path);
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
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
// Create a class path zip entry for a given path (return NULL if not found
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
// or zip/JAR file cannot be opened)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
ClassPathZipEntry* ClassLoader::create_class_path_zip_entry(const char *path) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
  // check for a regular file
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
  struct stat st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
  if (os::stat(path, &st) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
    if ((st.st_mode & S_IFREG) == S_IFREG) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
      char orig_path[JVM_MAXPATHLEN];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
      char canonical_path[JVM_MAXPATHLEN];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
      strcpy(orig_path, path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
      if (get_canonical_path(orig_path, canonical_path, JVM_MAXPATHLEN)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
        char* error_msg = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
        jzfile* zip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
        {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
          // enable call to C land
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
          JavaThread* thread = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
          ThreadToNativeFromVM ttn(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
          HandleMark hm(thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
          zip = (*ZipOpen)(canonical_path, &error_msg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
        if (zip != NULL && error_msg == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
          // create using canonical path
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
          return new ClassPathZipEntry(zip, canonical_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
// returns true if entry already on class path
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
bool ClassLoader::contains_entry(ClassPathEntry *entry) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
  ClassPathEntry* e = _first_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
  while (e != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
    // assume zip entries have been canonicalized
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
    if (strcmp(entry->name(), e->name()) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
    e = e->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
void ClassLoader::add_to_list(ClassPathEntry *new_entry) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
  if (new_entry != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
    if (_last_entry == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
      _first_entry = _last_entry = new_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
      _last_entry->set_next(new_entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
      _last_entry = new_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
void ClassLoader::update_class_path_entry_list(const char *path,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
                                               bool check_for_duplicates) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
  struct stat st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
  if (os::stat((char *)path, &st) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
    // File or directory found
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
    ClassPathEntry* new_entry = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
    create_class_path_entry((char *)path, st, &new_entry, LazyBootClassLoader);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
    // The kernel VM adds dynamically to the end of the classloader path and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
    // doesn't reorder the bootclasspath which would break java.lang.Package
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
    // (see PackageInfo).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
    // Add new entry to linked list
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
    if (!check_for_duplicates || !contains_entry(new_entry)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
      add_to_list(new_entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
void ClassLoader::print_bootclasspath() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
  ClassPathEntry* e = _first_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
  tty->print("[bootclasspath= ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
  while (e != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
    tty->print("%s ;", e->name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
    e = e->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
  tty->print_cr("]");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
void ClassLoader::load_zip_library() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
  assert(ZipOpen == NULL, "should not load zip library twice");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
  // First make sure native library is loaded
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
  os::native_java_library();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  // Load zip library
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
  char path[JVM_MAXPATHLEN];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
  char ebuf[1024];
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
  hpi::dll_build_name(path, sizeof(path), Arguments::get_dll_dir(), "zip");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
  void* handle = hpi::dll_load(path, ebuf, sizeof ebuf);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
  if (handle == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
    vm_exit_during_initialization("Unable to load ZIP library", path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
  // Lookup zip entry points
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
  ZipOpen      = CAST_TO_FN_PTR(ZipOpen_t, hpi::dll_lookup(handle, "ZIP_Open"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
  ZipClose     = CAST_TO_FN_PTR(ZipClose_t, hpi::dll_lookup(handle, "ZIP_Close"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
  FindEntry    = CAST_TO_FN_PTR(FindEntry_t, hpi::dll_lookup(handle, "ZIP_FindEntry"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
  ReadEntry    = CAST_TO_FN_PTR(ReadEntry_t, hpi::dll_lookup(handle, "ZIP_ReadEntry"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  ReadMappedEntry = CAST_TO_FN_PTR(ReadMappedEntry_t, hpi::dll_lookup(handle, "ZIP_ReadMappedEntry"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
  GetNextEntry = CAST_TO_FN_PTR(GetNextEntry_t, hpi::dll_lookup(handle, "ZIP_GetNextEntry"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
  // ZIP_Close is not exported on Windows in JDK5.0 so don't abort if ZIP_Close is NULL
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
  if (ZipOpen == NULL || FindEntry == NULL || ReadEntry == NULL || GetNextEntry == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
    vm_exit_during_initialization("Corrupted ZIP library", path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
  // Lookup canonicalize entry in libjava.dll
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
  void *javalib_handle = os::native_java_library();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
  CanonicalizeEntry = CAST_TO_FN_PTR(canonicalize_fn_t, hpi::dll_lookup(javalib_handle, "Canonicalize"));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
  // This lookup only works on 1.3. Do not check for non-null here
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
// PackageInfo data exists in order to support the java.lang.Package
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
// class.  A Package object provides information about a java package
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
// (version, vendor, etc.) which originates in the manifest of the jar
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
// file supplying the package.  For application classes, the ClassLoader
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
// object takes care of this.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
// For system (boot) classes, the Java code in the Package class needs
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
// to be able to identify which source jar file contained the boot
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
// class, so that it can extract the manifest from it.  This table
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
// identifies java packages with jar files in the boot classpath.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
// Because the boot classpath cannot change, the classpath index is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
// sufficient to identify the source jar file or directory.  (Since
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
// directories have no manifests, the directory name is not required,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
// but is available.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
// When using sharing -- the pathnames of entries in the boot classpath
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
// may not be the same at runtime as they were when the archive was
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
// created (NFS, Samba, etc.).  The actual files and directories named
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
// in the classpath must be the same files, in the same order, even
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
// though the exact name is not the same.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
class PackageInfo: public BasicHashtableEntry {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
  const char* _pkgname;       // Package name
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
  int _classpath_index;       // Index of directory or JAR file loaded from
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
  PackageInfo* next() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
    return (PackageInfo*)BasicHashtableEntry::next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
  const char* pkgname()           { return _pkgname; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
  void set_pkgname(char* pkgname) { _pkgname = pkgname; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
  const char* filename() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
    return ClassLoader::classpath_entry(_classpath_index)->name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
  void set_index(int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
    _classpath_index = index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
class PackageHashtable : public BasicHashtable {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
  inline unsigned int compute_hash(const char *s, int n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
    unsigned int val = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
    while (--n >= 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
      val = *s++ + 31 * val;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
    return val;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
  PackageInfo* bucket(int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
    return (PackageInfo*)BasicHashtable::bucket(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
  PackageInfo* get_entry(int index, unsigned int hash,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
                         const char* pkgname, size_t n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
    for (PackageInfo* pp = bucket(index); pp != NULL; pp = pp->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
      if (pp->hash() == hash &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
          strncmp(pkgname, pp->pkgname(), n) == 0 &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
          pp->pkgname()[n] == '\0') {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
        return pp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
  PackageHashtable(int table_size)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
    : BasicHashtable(table_size, sizeof(PackageInfo)) {}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
  PackageHashtable(int table_size, HashtableBucket* t, int number_of_entries)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
    : BasicHashtable(table_size, sizeof(PackageInfo), t, number_of_entries) {}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
  PackageInfo* get_entry(const char* pkgname, int n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
    unsigned int hash = compute_hash(pkgname, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
    return get_entry(hash_to_index(hash), hash, pkgname, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
  PackageInfo* new_entry(char* pkgname, int n) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
    unsigned int hash = compute_hash(pkgname, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
    PackageInfo* pp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
    pp = (PackageInfo*)BasicHashtable::new_entry(hash);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
    pp->set_pkgname(pkgname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
    return pp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
  void add_entry(PackageInfo* pp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
    int index = hash_to_index(pp->hash());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
    BasicHashtable::add_entry(index, pp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
  void copy_pkgnames(const char** packages) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
    int n = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
    for (int i = 0; i < table_size(); ++i) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
      for (PackageInfo* pp = bucket(i); pp != NULL; pp = pp->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
        packages[n++] = pp->pkgname();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
    assert(n == number_of_entries(), "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
  void copy_table(char** top, char* end, PackageHashtable* table);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
void PackageHashtable::copy_table(char** top, char* end,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
                                  PackageHashtable* table) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
  // Copy (relocate) the table to the shared space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
  BasicHashtable::copy_table(top, end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
  // Calculate the space needed for the package name strings.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
  int i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
  int n = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
  for (i = 0; i < table_size(); ++i) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
    for (PackageInfo* pp = table->bucket(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
                      pp != NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
                      pp = pp->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
      n += (int)(strlen(pp->pkgname()) + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
  if (*top + n + sizeof(intptr_t) >= end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
    warning("\nThe shared miscellaneous data space is not large "
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
            "enough to \npreload requested classes.  Use "
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
            "-XX:SharedMiscDataSize= to increase \nthe initial "
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
            "size of the miscellaneous data space.\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
    exit(2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
  // Copy the table data (the strings) to the shared space.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
  n = align_size_up(n, sizeof(HeapWord));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
  *(intptr_t*)(*top) = n;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
  *top += sizeof(intptr_t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
  for (i = 0; i < table_size(); ++i) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
    for (PackageInfo* pp = table->bucket(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
                      pp != NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
                      pp = pp->next()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
      int n1 = (int)(strlen(pp->pkgname()) + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
      pp->set_pkgname((char*)memcpy(*top, pp->pkgname(), n1));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
      *top += n1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
  *top = (char*)align_size_up((intptr_t)*top, sizeof(HeapWord));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
void ClassLoader::copy_package_info_buckets(char** top, char* end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
  _package_hash_table->copy_buckets(top, end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
void ClassLoader::copy_package_info_table(char** top, char* end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
  _package_hash_table->copy_table(top, end, _package_hash_table);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
PackageInfo* ClassLoader::lookup_package(const char *pkgname) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
  const char *cp = strrchr(pkgname, '/');
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
  if (cp != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
    // Package prefix found
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
    int n = cp - pkgname + 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
    return _package_hash_table->get_entry(pkgname, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
bool ClassLoader::add_package(const char *pkgname, int classpath_index, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
  assert(pkgname != NULL, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
  // Bootstrap loader no longer holds system loader lock obj serializing
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
  // load_instance_class and thereby add_package
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
    MutexLocker ml(PackageTable_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
    // First check for previously loaded entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
    PackageInfo* pp = lookup_package(pkgname);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
    if (pp != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
      // Existing entry found, check source of package
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
      pp->set_index(classpath_index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
    const char *cp = strrchr(pkgname, '/');
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
    if (cp != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
      // Package prefix found
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
      int n = cp - pkgname + 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
      char* new_pkgname = NEW_C_HEAP_ARRAY(char, n + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
      if (new_pkgname == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
        return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
      memcpy(new_pkgname, pkgname, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
      new_pkgname[n] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
      pp = _package_hash_table->new_entry(new_pkgname, n);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
      pp->set_index(classpath_index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
      // Insert into hash table
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
      _package_hash_table->add_entry(pp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
oop ClassLoader::get_system_package(const char* name, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
  PackageInfo* pp;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
    MutexLocker ml(PackageTable_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
    pp = lookup_package(name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
  if (pp == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
    Handle p = java_lang_String::create_from_str(pp->filename(), THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
    return p();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
objArrayOop ClassLoader::get_system_packages(TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
  ResourceMark rm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
  int nof_entries;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
  const char** packages;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
    MutexLocker ml(PackageTable_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
    // Allocate resource char* array containing package names
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
    nof_entries = _package_hash_table->number_of_entries();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
    if ((packages = NEW_RESOURCE_ARRAY(const char*, nof_entries)) == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
      return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
    _package_hash_table->copy_pkgnames(packages);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
  // Allocate objArray and fill with java.lang.String
4571
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 3820
diff changeset
   822
  objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
                                           nof_entries, CHECK_0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
  objArrayHandle result(THREAD, r);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
  for (int i = 0; i < nof_entries; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
    Handle str = java_lang_String::create_from_str(packages[i], CHECK_0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
    result->obj_at_put(i, str());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
  return result();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
instanceKlassHandle ClassLoader::load_classfile(symbolHandle h_name, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
  ResourceMark rm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
  EventMark m("loading class " INTPTR_FORMAT, (address)h_name());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
  ThreadProfilerMark tpm(ThreadProfilerMark::classLoaderRegion);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
  stringStream st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
  // st.print() uses too much stack space while handling a StackOverflowError
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
  // st.print("%s.class", h_name->as_utf8());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
  st.print_raw(h_name->as_utf8());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
  st.print_raw(".class");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
  char* name = st.as_string();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
  // Lookup stream for parsing .class file
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
  ClassFileStream* stream = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
  int classpath_index = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
  {
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   850
    PerfClassTraceTime vmtimer(perf_sys_class_lookup_time(),
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   851
                               ((JavaThread*) THREAD)->get_thread_stat()->perf_timers_addr(),
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   852
                               PerfClassTraceTime::CLASS_LOAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
    ClassPathEntry* e = _first_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
    while (e != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
      stream = e->open_stream(name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
      if (stream != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
      e = e->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
      ++classpath_index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
  instanceKlassHandle h(THREAD, klassOop(NULL));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
  if (stream != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
    // class file found, parse it
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
    ClassFileParser parser(stream);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
    Handle class_loader;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
    Handle protection_domain;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
    symbolHandle parsed_name;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
    instanceKlassHandle result = parser.parseClassFile(h_name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
                                                       class_loader,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
                                                       protection_domain,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
                                                       parsed_name,
3820
0a8fbbe180db 6830542: Performance: JVM_DefineClass already verified.
acorn
parents: 3582
diff changeset
   876
                                                       false,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
                                                       CHECK_(h));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
    // add to package table
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
    if (add_package(name, classpath_index, THREAD)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
      h = result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
  return h;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
void ClassLoader::create_package_info_table(HashtableBucket *t, int length,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
                                            int number_of_entries) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
  assert(_package_hash_table == NULL, "One package info table allowed.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
  assert(length == package_hash_table_size * sizeof(HashtableBucket),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
         "bad shared package info size.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
  _package_hash_table = new PackageHashtable(package_hash_table_size, t,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
                                             number_of_entries);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
void ClassLoader::create_package_info_table() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
    assert(_package_hash_table == NULL, "shouldn't have one yet");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
    _package_hash_table = new PackageHashtable(package_hash_table_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
// Initialize the class loader's access to methods in libzip.  Parse and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
// process the boot classpath into a list ClassPathEntry objects.  Once
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
// this list has been created, it must not change order (see class PackageInfo)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
// it can be appended to and is by jvmti and the kernel vm.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
void ClassLoader::initialize() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
  assert(_package_hash_table == NULL, "should have been initialized by now.");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
  EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
  if (UsePerfData) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
    // jvmstat performance counters
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
    NEWPERFTICKCOUNTER(_perf_accumulated_time, SUN_CLS, "time");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
    NEWPERFTICKCOUNTER(_perf_class_init_time, SUN_CLS, "classInitTime");
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   918
    NEWPERFTICKCOUNTER(_perf_class_init_selftime, SUN_CLS, "classInitTime.self");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
    NEWPERFTICKCOUNTER(_perf_class_verify_time, SUN_CLS, "classVerifyTime");
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   920
    NEWPERFTICKCOUNTER(_perf_class_verify_selftime, SUN_CLS, "classVerifyTime.self");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
    NEWPERFTICKCOUNTER(_perf_class_link_time, SUN_CLS, "classLinkedTime");
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   922
    NEWPERFTICKCOUNTER(_perf_class_link_selftime, SUN_CLS, "classLinkedTime.self");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
    NEWPERFEVENTCOUNTER(_perf_classes_inited, SUN_CLS, "initializedClasses");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
    NEWPERFEVENTCOUNTER(_perf_classes_linked, SUN_CLS, "linkedClasses");
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   925
    NEWPERFEVENTCOUNTER(_perf_classes_verified, SUN_CLS, "verifiedClasses");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   926
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   927
    NEWPERFTICKCOUNTER(_perf_class_parse_time, SUN_CLS, "parseClassTime");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   928
    NEWPERFTICKCOUNTER(_perf_class_parse_selftime, SUN_CLS, "parseClassTime.self");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   929
    NEWPERFTICKCOUNTER(_perf_sys_class_lookup_time, SUN_CLS, "lookupSysClassTime");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   930
    NEWPERFTICKCOUNTER(_perf_shared_classload_time, SUN_CLS, "sharedClassLoadTime");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   931
    NEWPERFTICKCOUNTER(_perf_sys_classload_time, SUN_CLS, "sysClassLoadTime");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   932
    NEWPERFTICKCOUNTER(_perf_app_classload_time, SUN_CLS, "appClassLoadTime");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   933
    NEWPERFTICKCOUNTER(_perf_app_classload_selftime, SUN_CLS, "appClassLoadTime.self");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   934
    NEWPERFEVENTCOUNTER(_perf_app_classload_count, SUN_CLS, "appClassLoadCount");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   935
    NEWPERFTICKCOUNTER(_perf_define_appclasses, SUN_CLS, "defineAppClasses");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   936
    NEWPERFTICKCOUNTER(_perf_define_appclass_time, SUN_CLS, "defineAppClassTime");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   937
    NEWPERFTICKCOUNTER(_perf_define_appclass_selftime, SUN_CLS, "defineAppClassTime.self");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   938
    NEWPERFBYTECOUNTER(_perf_app_classfile_bytes_read, SUN_CLS, "appClassBytes");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   939
    NEWPERFBYTECOUNTER(_perf_sys_classfile_bytes_read, SUN_CLS, "sysClassBytes");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2567
diff changeset
   940
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
    // The following performance counters are added for measuring the impact
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
    // of the bug fix of 6365597. They are mainly focused on finding out
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
    // the behavior of system & user-defined classloader lock, whether
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
    // ClassLoader.loadClass/findClass is being called synchronized or not.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
    // Also two additional counters are created to see whether 'UnsyncloadClass'
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
    // flag is being set or not and how many times load_instance_class call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
    // fails with linkageError etc.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
    NEWPERFEVENTCOUNTER(_sync_systemLoaderLockContentionRate, SUN_CLS,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
                        "systemLoaderLockContentionRate");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
    NEWPERFEVENTCOUNTER(_sync_nonSystemLoaderLockContentionRate, SUN_CLS,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
                        "nonSystemLoaderLockContentionRate");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
    NEWPERFEVENTCOUNTER(_sync_JVMFindLoadedClassLockFreeCounter, SUN_CLS,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
                        "jvmFindLoadedClassNoLockCalls");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
    NEWPERFEVENTCOUNTER(_sync_JVMDefineClassLockFreeCounter, SUN_CLS,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
                        "jvmDefineClassNoLockCalls");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
    NEWPERFEVENTCOUNTER(_sync_JNIDefineClassLockFreeCounter, SUN_CLS,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
                        "jniDefineClassNoLockCalls");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
    NEWPERFEVENTCOUNTER(_unsafe_defineClassCallCounter, SUN_CLS,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
                        "unsafeDefineClassCalls");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
    NEWPERFEVENTCOUNTER(_isUnsyncloadClass, SUN_CLS, "isUnsyncloadClassSet");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
    NEWPERFEVENTCOUNTER(_load_instance_class_failCounter, SUN_CLS,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
                        "loadInstanceClassFailRate");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
    // increment the isUnsyncloadClass counter if UnsyncloadClass is set.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
    if (UnsyncloadClass) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
      _isUnsyncloadClass->inc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
  // lookup zip library entry points
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
  load_zip_library();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
  // initialize search path
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
  setup_bootstrap_search_path();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
  if (LazyBootClassLoader) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
    // set up meta index which makes boot classpath initialization lazier
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
    setup_meta_index();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
jlong ClassLoader::classloader_time_ms() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
  return UsePerfData ?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
    Management::ticks_to_ms(_perf_accumulated_time->get_value()) : -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
jlong ClassLoader::class_init_count() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
  return UsePerfData ? _perf_classes_inited->get_value() : -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
jlong ClassLoader::class_init_time_ms() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
  return UsePerfData ?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
    Management::ticks_to_ms(_perf_class_init_time->get_value()) : -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
jlong ClassLoader::class_verify_time_ms() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
  return UsePerfData ?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
    Management::ticks_to_ms(_perf_class_verify_time->get_value()) : -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
jlong ClassLoader::class_link_count() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
  return UsePerfData ? _perf_classes_linked->get_value() : -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
jlong ClassLoader::class_link_time_ms() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
  return UsePerfData ?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
    Management::ticks_to_ms(_perf_class_link_time->get_value()) : -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
int ClassLoader::compute_Object_vtable() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
  // hardwired for JDK1.2 -- would need to duplicate class file parsing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
  // code to determine actual value from file
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
  // Would be value '11' if finals were in vtable
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
  int JDK_1_2_Object_vtable_size = 5;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
  return JDK_1_2_Object_vtable_size * vtableEntry::size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
void classLoader_init() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
  ClassLoader::initialize();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
bool ClassLoader::get_canonical_path(char* orig, char* out, int len) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
  assert(orig != NULL && out != NULL && len > 0, "bad arguments");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
  if (CanonicalizeEntry != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
    JNIEnv* env = JavaThread::current()->jni_environment();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
    if ((CanonicalizeEntry)(env, hpi::native_path(orig), out, len) < 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
      return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1033
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1034
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
    // On JDK 1.2.2 the Canonicalize does not exist, so just do nothing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
    strncpy(out, orig, len);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
    out[len - 1] = '\0';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1042
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
void ClassLoader::verify() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
  _package_hash_table->verify();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
// CompileTheWorld
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
// Iterates over all class path entries and forces compilation of all methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1052
// in all classes found. Currently, only zip/jar archives are searched.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1053
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
// The classes are loaded by the Java level bootstrap class loader, and the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1055
// initializer is called. If DelayCompilationDuringStartup is true (default),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1056
// the interpreter will run the initialization code. Note that forcing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
// initialization in this way could potentially lead to initialization order
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
// problems, in which case we could just force the initialization bit to be set.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
// We need to iterate over the contents of a zip/jar file, so we replicate the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
// jzcell and jzfile definitions from zip_util.h but rename jzfile to real_jzfile,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
// since jzfile already has a void* definition.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
// Note that this is only used in debug mode.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
// HotSpot integration note:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
// Matches zip_util.h 1.14 99/06/01 from jdk1.3 beta H build
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
// JDK 1.3 version
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
typedef struct real_jzentry13 {         /* Zip file entry */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
    char *name;                 /* entry name */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
    jint time;                  /* modification time */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
    jint size;                  /* size of uncompressed data */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
    jint csize;                 /* size of compressed data (zero if uncompressed) */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
    jint crc;                   /* crc of uncompressed data */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
    char *comment;              /* optional zip file comment */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
    jbyte *extra;               /* optional extra data */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
    jint pos;                   /* position of LOC header (if negative) or data */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
} real_jzentry13;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
typedef struct real_jzfile13 {  /* Zip file */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
    char *name;                 /* zip file name */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
    jint refs;                  /* number of active references */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
    jint fd;                    /* open file descriptor */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
    void *lock;                 /* read lock */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
    char *comment;              /* zip file comment */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
    char *msg;                  /* zip error message */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
    void *entries;              /* array of hash cells */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
    jint total;                 /* total number of entries */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1092
    unsigned short *table;      /* Hash chain heads: indexes into entries */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
    jint tablelen;              /* number of hash eads */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
    real_jzfile13 *next;        /* next zip file in search list */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
    jzentry *cache;             /* we cache the most recently freed jzentry */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
    /* Information on metadata names in META-INF directory */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
    char **metanames;           /* array of meta names (may have null names) */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
    jint metacount;             /* number of slots in metanames array */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
    /* If there are any per-entry comments, they are in the comments array */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
    char **comments;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
} real_jzfile13;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
// JDK 1.2 version
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
typedef struct real_jzentry12 {  /* Zip file entry */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
    char *name;                  /* entry name */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
    jint time;                   /* modification time */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
    jint size;                   /* size of uncompressed data */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
    jint csize;                  /* size of compressed data (zero if uncompressed) */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
    jint crc;                    /* crc of uncompressed data */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
    char *comment;               /* optional zip file comment */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
    jbyte *extra;                /* optional extra data */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
    jint pos;                    /* position of LOC header (if negative) or data */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
    struct real_jzentry12 *next; /* next entry in hash table */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
} real_jzentry12;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
typedef struct real_jzfile12 {  /* Zip file */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
    char *name;                 /* zip file name */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
    jint refs;                  /* number of active references */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
    jint fd;                    /* open file descriptor */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
    void *lock;                 /* read lock */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
    char *comment;              /* zip file comment */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
    char *msg;                  /* zip error message */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
    real_jzentry12 *entries;    /* array of zip entries */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
    jint total;                 /* total number of entries */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
    real_jzentry12 **table;     /* hash table of entries */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
    jint tablelen;              /* number of buckets */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
    jzfile *next;               /* next zip file in search list */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
} real_jzfile12;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
void ClassPathDirEntry::compile_the_world(Handle loader, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
  // For now we only compile all methods in all classes in zip/jar files
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
  tty->print_cr("CompileTheWorld : Skipped classes in %s", _dir);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
  tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
bool ClassPathDirEntry::is_rt_jar() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
void ClassPathZipEntry::compile_the_world(Handle loader, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
  if (JDK_Version::is_jdk12x_version()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
    compile_the_world12(loader, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
    compile_the_world13(loader, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
  if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
    if (PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
      CLEAR_PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
      tty->print_cr("\nCompileTheWorld : Ran out of memory\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
      size_t used = Universe::heap()->permanent_used();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
      size_t capacity = Universe::heap()->permanent_capacity();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1154
      tty->print_cr("Permanent generation used %dK of %dK", used/K, capacity/K);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
      tty->print_cr("Increase size by setting e.g. -XX:MaxPermSize=%dK\n", capacity*2/K);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
      tty->print_cr("\nCompileTheWorld : Unexpected exception occurred\n");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
// Version that works for JDK 1.3.x
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
void ClassPathZipEntry::compile_the_world13(Handle loader, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
  real_jzfile13* zip = (real_jzfile13*) _zip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1165
  tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
  tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
  // Iterate over all entries in zip file
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
  for (int n = 0; ; n++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
    real_jzentry13 * ze = (real_jzentry13 *)((*GetNextEntry)(_zip, n));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
    if (ze == NULL) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
    ClassLoader::compile_the_world_in(ze->name, loader, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
// Version that works for JDK 1.2.x
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1177
void ClassPathZipEntry::compile_the_world12(Handle loader, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
  real_jzfile12* zip = (real_jzfile12*) _zip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
  tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
  tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
  // Iterate over all entries in zip file
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
  for (int n = 0; ; n++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
    real_jzentry12 * ze = (real_jzentry12 *)((*GetNextEntry)(_zip, n));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
    if (ze == NULL) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
    ClassLoader::compile_the_world_in(ze->name, loader, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
bool ClassPathZipEntry::is_rt_jar() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
  if (JDK_Version::is_jdk12x_version()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
    return is_rt_jar12();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
    return is_rt_jar13();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
// JDK 1.3 version
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
bool ClassPathZipEntry::is_rt_jar13() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
  real_jzfile13* zip = (real_jzfile13*) _zip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
  int len = (int)strlen(zip->name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
  // Check whether zip name ends in "rt.jar"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
  // This will match other archives named rt.jar as well, but this is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
  // only used for debugging.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
  return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
// JDK 1.2 version
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
bool ClassPathZipEntry::is_rt_jar12() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
  real_jzfile12* zip = (real_jzfile12*) _zip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
  int len = (int)strlen(zip->name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
  // Check whether zip name ends in "rt.jar"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
  // This will match other archives named rt.jar as well, but this is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
  // only used for debugging.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
  return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
void LazyClassPathEntry::compile_the_world(Handle loader, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
  resolve_entry()->compile_the_world(loader, CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
bool LazyClassPathEntry::is_rt_jar() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
  return resolve_entry()->is_rt_jar();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
void ClassLoader::compile_the_world() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1226
  EXCEPTION_MARK;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1227
  HandleMark hm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1228
  ResourceMark rm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
  // Make sure we don't run with background compilation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
  BackgroundCompilation = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
  // Find bootstrap loader
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
  Handle system_class_loader (THREAD, SystemDictionary::java_system_loader());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
  // Iterate over all bootstrap class path entries
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
  ClassPathEntry* e = _first_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
  while (e != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
    // We stop at rt.jar, unless it is the first bootstrap path entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
    if (e->is_rt_jar() && e != _first_entry) break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
    e->compile_the_world(system_class_loader, CATCH);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
    e = e->next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
  tty->print_cr("CompileTheWorld : Done");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
    // Print statistics as if before normal exit:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
    extern void print_statistics();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
    print_statistics();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1247
  vm_exit(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1248
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
int ClassLoader::_compile_the_world_counter = 0;
4736
e091227926da 6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents: 4571
diff changeset
  1251
static int _codecache_sweep_counter = 0;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1252
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1253
void ClassLoader::compile_the_world_in(char* name, Handle loader, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1254
  int len = (int)strlen(name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1255
  if (len > 6 && strcmp(".class", name + len - 6) == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1256
    // We have a .class file
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1257
    char buffer[2048];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1258
    strncpy(buffer, name, len - 6);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1259
    buffer[len-6] = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1260
    // If the file has a period after removing .class, it's not really a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1261
    // valid class file.  The class loader will check everything else.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1262
    if (strchr(buffer, '.') == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1263
      _compile_the_world_counter++;
2567
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1264
      if (_compile_the_world_counter > CompileTheWorldStopAt) return;
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1265
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1266
      // Construct name without extension
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1267
      symbolHandle sym = oopFactory::new_symbol_handle(buffer, CHECK);
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1268
      // Use loader to load and initialize class
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1269
      klassOop ik = SystemDictionary::resolve_or_null(sym, loader, Handle(), THREAD);
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1270
      instanceKlassHandle k (THREAD, ik);
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1271
      if (k.not_null() && !HAS_PENDING_EXCEPTION) {
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1272
        k->initialize(THREAD);
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1273
      }
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1274
      bool exception_occurred = HAS_PENDING_EXCEPTION;
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1275
      CLEAR_PENDING_EXCEPTION;
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1276
      if (CompileTheWorldPreloadClasses && k.not_null()) {
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1277
        constantPoolKlass::preload_and_initialize_all_classes(k->constants(), THREAD);
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1278
        if (HAS_PENDING_EXCEPTION) {
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1279
          // If something went wrong in preloading we just ignore it
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1280
          CLEAR_PENDING_EXCEPTION;
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1281
          tty->print_cr("Preloading failed for (%d) %s", _compile_the_world_counter, buffer);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1282
        }
2567
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1283
      }
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1284
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1285
      if (_compile_the_world_counter >= CompileTheWorldStartAt) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1286
        if (k.is_null() || (exception_occurred && !CompileTheWorldIgnoreInitErrors)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1287
          // If something went wrong (e.g. ExceptionInInitializerError) we skip this class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1288
          tty->print_cr("CompileTheWorld (%d) : Skipping %s", _compile_the_world_counter, buffer);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1289
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1290
          tty->print_cr("CompileTheWorld (%d) : %s", _compile_the_world_counter, buffer);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1291
          // Preload all classes to get around uncommon traps
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1292
          // Iterate over all methods in class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1293
          for (int n = 0; n < k->methods()->length(); n++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1294
            methodHandle m (THREAD, methodOop(k->methods()->obj_at(n)));
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 5924
diff changeset
  1295
            if (CompilationPolicy::can_be_compiled(m)) {
4736
e091227926da 6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents: 4571
diff changeset
  1296
e091227926da 6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents: 4571
diff changeset
  1297
              if (++_codecache_sweep_counter == CompileTheWorldSafepointInterval) {
e091227926da 6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents: 4571
diff changeset
  1298
                // Give sweeper a chance to keep up with CTW
e091227926da 6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents: 4571
diff changeset
  1299
                VM_ForceSafepoint op;
e091227926da 6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents: 4571
diff changeset
  1300
                VMThread::execute(&op);
e091227926da 6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents: 4571
diff changeset
  1301
                _codecache_sweep_counter = 0;
e091227926da 6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents: 4571
diff changeset
  1302
              }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1303
              // Force compilation
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 5924
diff changeset
  1304
              CompileBroker::compile_method(m, InvocationEntryBci, CompLevel_initial_compile,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1305
                                            methodHandle(), 0, "CTW", THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1306
              if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1307
                CLEAR_PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1308
                tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_counter, m->name()->as_C_string());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1309
              }
2567
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1310
              if (TieredCompilation) {
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1311
                // Clobber the first compile and force second tier compilation
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1312
                nmethod* nm = m->code();
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1313
                if (nm != NULL) {
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1314
                  // Throw out the code so that the code cache doesn't fill up
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1315
                  nm->make_not_entrant();
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1316
                  m->clear_code();
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1317
                }
6453
970dc585ab63 6953144: Tiered compilation
iveresov
parents: 5924
diff changeset
  1318
                CompileBroker::compile_method(m, InvocationEntryBci, CompLevel_full_optimization,
2567
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1319
                                              methodHandle(), 0, "CTW", THREAD);
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1320
                if (HAS_PENDING_EXCEPTION) {
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1321
                  CLEAR_PENDING_EXCEPTION;
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1322
                  tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_counter, m->name()->as_C_string());
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1323
                }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
              }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
            }
2567
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1326
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1327
            nmethod* nm = m->code();
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1328
            if (nm != NULL) {
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1329
              // Throw out the code so that the code cache doesn't fill up
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1330
              nm->make_not_entrant();
ee624563f743 6741757: minor ctw improvements
never
parents: 1
diff changeset
  1331
              m->clear_code();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1332
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1333
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1334
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1335
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1336
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1337
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1338
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1339
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1340
#endif //PRODUCT