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0
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1 /*
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2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include "incls/_precompiled.incl"
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26 #include "incls/_classLoader.cpp.incl"
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27
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28
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29 // Entry points in zip.dll for loading zip/jar file entries
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30
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31 typedef void * * (JNICALL *ZipOpen_t)(const char *name, char **pmsg);
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32 typedef void (JNICALL *ZipClose_t)(jzfile *zip);
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33 typedef jzentry* (JNICALL *FindEntry_t)(jzfile *zip, const char *name, jint *sizeP, jint *nameLen);
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34 typedef jboolean (JNICALL *ReadEntry_t)(jzfile *zip, jzentry *entry, unsigned char *buf, char *namebuf);
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35 typedef jboolean (JNICALL *ReadMappedEntry_t)(jzfile *zip, jzentry *entry, unsigned char **buf, char *namebuf);
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36 typedef jzentry* (JNICALL *GetNextEntry_t)(jzfile *zip, jint n);
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37
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38 static ZipOpen_t ZipOpen = NULL;
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39 static ZipClose_t ZipClose = NULL;
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40 static FindEntry_t FindEntry = NULL;
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41 static ReadEntry_t ReadEntry = NULL;
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42 static ReadMappedEntry_t ReadMappedEntry = NULL;
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43 static GetNextEntry_t GetNextEntry = NULL;
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44 static canonicalize_fn_t CanonicalizeEntry = NULL;
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45
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46 // Globals
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47
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48 PerfCounter* ClassLoader::_perf_accumulated_time = NULL;
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49 PerfCounter* ClassLoader::_perf_classes_inited = NULL;
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50 PerfCounter* ClassLoader::_perf_class_init_time = NULL;
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51 PerfCounter* ClassLoader::_perf_class_verify_time = NULL;
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52 PerfCounter* ClassLoader::_perf_classes_linked = NULL;
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53 PerfCounter* ClassLoader::_perf_class_link_time = NULL;
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54 PerfCounter* ClassLoader::_sync_systemLoaderLockContentionRate = NULL;
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55 PerfCounter* ClassLoader::_sync_nonSystemLoaderLockContentionRate = NULL;
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56 PerfCounter* ClassLoader::_sync_JVMFindLoadedClassLockFreeCounter = NULL;
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57 PerfCounter* ClassLoader::_sync_JVMDefineClassLockFreeCounter = NULL;
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58 PerfCounter* ClassLoader::_sync_JNIDefineClassLockFreeCounter = NULL;
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59 PerfCounter* ClassLoader::_unsafe_defineClassCallCounter = NULL;
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60 PerfCounter* ClassLoader::_isUnsyncloadClass = NULL;
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61 PerfCounter* ClassLoader::_load_instance_class_failCounter = NULL;
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62
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63 ClassPathEntry* ClassLoader::_first_entry = NULL;
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64 ClassPathEntry* ClassLoader::_last_entry = NULL;
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65 PackageHashtable* ClassLoader::_package_hash_table = NULL;
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66
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67 // helper routines
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68 bool string_starts_with(const char* str, const char* str_to_find) {
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69 size_t str_len = strlen(str);
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70 size_t str_to_find_len = strlen(str_to_find);
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71 if (str_to_find_len > str_len) {
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72 return false;
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73 }
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74 return (strncmp(str, str_to_find, str_to_find_len) == 0);
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75 }
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76
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77 bool string_ends_with(const char* str, const char* str_to_find) {
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78 size_t str_len = strlen(str);
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79 size_t str_to_find_len = strlen(str_to_find);
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80 if (str_to_find_len > str_len) {
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81 return false;
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82 }
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83 return (strncmp(str + (str_len - str_to_find_len), str_to_find, str_to_find_len) == 0);
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84 }
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85
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86
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87 MetaIndex::MetaIndex(char** meta_package_names, int num_meta_package_names) {
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88 if (num_meta_package_names == 0) {
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89 _meta_package_names = NULL;
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90 _num_meta_package_names = 0;
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91 } else {
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92 _meta_package_names = NEW_C_HEAP_ARRAY(char*, num_meta_package_names);
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93 _num_meta_package_names = num_meta_package_names;
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94 memcpy(_meta_package_names, meta_package_names, num_meta_package_names * sizeof(char*));
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95 }
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96 }
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97
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98
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99 MetaIndex::~MetaIndex() {
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100 FREE_C_HEAP_ARRAY(char*, _meta_package_names);
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101 }
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102
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103
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104 bool MetaIndex::may_contain(const char* class_name) {
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105 if ( _num_meta_package_names == 0) {
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106 return false;
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107 }
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108 size_t class_name_len = strlen(class_name);
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109 for (int i = 0; i < _num_meta_package_names; i++) {
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110 char* pkg = _meta_package_names[i];
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111 size_t pkg_len = strlen(pkg);
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112 size_t min_len = MIN2(class_name_len, pkg_len);
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113 if (!strncmp(class_name, pkg, min_len)) {
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114 return true;
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115 }
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116 }
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117 return false;
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118 }
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119
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120
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121 ClassPathEntry::ClassPathEntry() {
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122 set_next(NULL);
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123 }
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124
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125
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126 bool ClassPathEntry::is_lazy() {
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127 return false;
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128 }
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129
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130 ClassPathDirEntry::ClassPathDirEntry(char* dir) : ClassPathEntry() {
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131 _dir = NEW_C_HEAP_ARRAY(char, strlen(dir)+1);
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132 strcpy(_dir, dir);
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133 }
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134
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135
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136 ClassFileStream* ClassPathDirEntry::open_stream(const char* name) {
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137 // construct full path name
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138 char path[JVM_MAXPATHLEN];
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139 if (jio_snprintf(path, sizeof(path), "%s%s%s", _dir, os::file_separator(), name) == -1) {
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140 return NULL;
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141 }
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142 // check if file exists
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143 struct stat st;
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144 if (os::stat(path, &st) == 0) {
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145 // found file, open it
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146 int file_handle = hpi::open(path, 0, 0);
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147 if (file_handle != -1) {
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148 // read contents into resource array
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149 u1* buffer = NEW_RESOURCE_ARRAY(u1, st.st_size);
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150 size_t num_read = os::read(file_handle, (char*) buffer, st.st_size);
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151 // close file
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152 hpi::close(file_handle);
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153 // construct ClassFileStream
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154 if (num_read == (size_t)st.st_size) {
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155 return new ClassFileStream(buffer, st.st_size, _dir); // Resource allocated
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156 }
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157 }
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158 }
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159 return NULL;
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160 }
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161
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162
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163 ClassPathZipEntry::ClassPathZipEntry(jzfile* zip, const char* zip_name) : ClassPathEntry() {
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164 _zip = zip;
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165 _zip_name = NEW_C_HEAP_ARRAY(char, strlen(zip_name)+1);
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166 strcpy(_zip_name, zip_name);
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167 }
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168
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169 ClassPathZipEntry::~ClassPathZipEntry() {
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170 if (ZipClose != NULL) {
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171 (*ZipClose)(_zip);
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172 }
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173 FREE_C_HEAP_ARRAY(char, _zip_name);
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174 }
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175
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176 ClassFileStream* ClassPathZipEntry::open_stream(const char* name) {
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177 // enable call to C land
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178 JavaThread* thread = JavaThread::current();
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179 ThreadToNativeFromVM ttn(thread);
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180 // check whether zip archive contains name
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181 jint filesize, name_len;
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182 jzentry* entry = (*FindEntry)(_zip, name, &filesize, &name_len);
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183 if (entry == NULL) return NULL;
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184 u1* buffer;
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185 char name_buf[128];
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186 char* filename;
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187 if (name_len < 128) {
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188 filename = name_buf;
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189 } else {
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190 filename = NEW_RESOURCE_ARRAY(char, name_len + 1);
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191 }
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192
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193 // file found, get pointer to class in mmaped jar file.
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194 if (ReadMappedEntry == NULL ||
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195 !(*ReadMappedEntry)(_zip, entry, &buffer, filename)) {
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196 // mmaped access not available, perhaps due to compression,
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197 // read contents into resource array
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198 buffer = NEW_RESOURCE_ARRAY(u1, filesize);
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199 if (!(*ReadEntry)(_zip, entry, buffer, filename)) return NULL;
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200 }
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201 // return result
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202 return new ClassFileStream(buffer, filesize, _zip_name); // Resource allocated
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203 }
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204
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205 // invoke function for each entry in the zip file
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206 void ClassPathZipEntry::contents_do(void f(const char* name, void* context), void* context) {
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207 JavaThread* thread = JavaThread::current();
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208 HandleMark handle_mark(thread);
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209 ThreadToNativeFromVM ttn(thread);
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210 for (int n = 0; ; n++) {
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211 jzentry * ze = ((*GetNextEntry)(_zip, n));
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212 if (ze == NULL) break;
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213 (*f)(ze->name, context);
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214 }
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215 }
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216
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217 LazyClassPathEntry::LazyClassPathEntry(char* path, struct stat st) : ClassPathEntry() {
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218 _path = strdup(path);
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219 _st = st;
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220 _meta_index = NULL;
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221 _resolved_entry = NULL;
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222 }
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223
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224 bool LazyClassPathEntry::is_jar_file() {
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225 return ((_st.st_mode & S_IFREG) == S_IFREG);
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226 }
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227
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228 ClassPathEntry* LazyClassPathEntry::resolve_entry() {
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229 if (_resolved_entry != NULL) {
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230 return (ClassPathEntry*) _resolved_entry;
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231 }
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232 ClassPathEntry* new_entry = NULL;
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233 ClassLoader::create_class_path_entry(_path, _st, &new_entry, false);
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234 assert(new_entry != NULL, "earlier code should have caught this");
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235 {
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236 ThreadCritical tc;
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237 if (_resolved_entry == NULL) {
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238 _resolved_entry = new_entry;
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239 return new_entry;
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240 }
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241 }
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242 assert(_resolved_entry != NULL, "bug in MT-safe resolution logic");
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243 delete new_entry;
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244 return (ClassPathEntry*) _resolved_entry;
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245 }
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246
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247 ClassFileStream* LazyClassPathEntry::open_stream(const char* name) {
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248 if (_meta_index != NULL &&
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249 !_meta_index->may_contain(name)) {
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250 return NULL;
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251 }
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252 return resolve_entry()->open_stream(name);
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253 }
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254
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255 bool LazyClassPathEntry::is_lazy() {
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256 return true;
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257 }
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258
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259 static void print_meta_index(LazyClassPathEntry* entry,
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260 GrowableArray<char*>& meta_packages) {
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261 tty->print("[Meta index for %s=", entry->name());
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262 for (int i = 0; i < meta_packages.length(); i++) {
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263 if (i > 0) tty->print(" ");
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264 tty->print(meta_packages.at(i));
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265 }
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266 tty->print_cr("]");
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267 }
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268
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269
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270 void ClassLoader::setup_meta_index() {
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271 // Set up meta index which allows us to open boot jars lazily if
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272 // class data sharing is enabled
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273 const char* known_version = "% VERSION 2";
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274 char* meta_index_path = Arguments::get_meta_index_path();
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275 char* meta_index_dir = Arguments::get_meta_index_dir();
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276 FILE* file = fopen(meta_index_path, "r");
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277 int line_no = 0;
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278 if (file != NULL) {
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279 ResourceMark rm;
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280 LazyClassPathEntry* cur_entry = NULL;
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281 GrowableArray<char*> boot_class_path_packages(10);
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282 char package_name[256];
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283 bool skipCurrentJar = false;
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284 while (fgets(package_name, sizeof(package_name), file) != NULL) {
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285 ++line_no;
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286 // Remove trailing newline
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287 package_name[strlen(package_name) - 1] = '\0';
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288 switch(package_name[0]) {
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289 case '%':
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290 {
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291 if ((line_no == 1) && (strcmp(package_name, known_version) != 0)) {
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292 if (TraceClassLoading && Verbose) {
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293 tty->print("[Unsupported meta index version]");
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294 }
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295 fclose(file);
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296 return;
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297 }
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298 }
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299
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300 // These directives indicate jar files which contain only
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301 // classes, only non-classfile resources, or a combination of
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302 // the two. See src/share/classes/sun/misc/MetaIndex.java and
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303 // make/tools/MetaIndex/BuildMetaIndex.java in the J2SE
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304 // workspace.
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305 case '#':
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306 case '!':
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307 case '@':
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308 {
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309 // Hand off current packages to current lazy entry (if any)
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310 if ((cur_entry != NULL) &&
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311 (boot_class_path_packages.length() > 0)) {
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312 if (TraceClassLoading && Verbose) {
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313 print_meta_index(cur_entry, boot_class_path_packages);
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314 }
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315 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0),
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316 boot_class_path_packages.length());
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317 cur_entry->set_meta_index(index);
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318 }
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319 cur_entry = NULL;
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320 boot_class_path_packages.clear();
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321
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322 // Find lazy entry corresponding to this jar file
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323 for (ClassPathEntry* entry = _first_entry; entry != NULL; entry = entry->next()) {
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324 if (entry->is_lazy() &&
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325 string_starts_with(entry->name(), meta_index_dir) &&
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326 string_ends_with(entry->name(), &package_name[2])) {
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327 cur_entry = (LazyClassPathEntry*) entry;
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328 break;
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329 }
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330 }
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331
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332 // If the first character is '@', it indicates the following jar
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333 // file is a resource only jar file in which case, we should skip
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334 // reading the subsequent entries since the resource loading is
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335 // totally handled by J2SE side.
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336 if (package_name[0] == '@') {
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337 if (cur_entry != NULL) {
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338 cur_entry->set_meta_index(new MetaIndex(NULL, 0));
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339 }
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340 cur_entry = NULL;
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341 skipCurrentJar = true;
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342 } else {
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343 skipCurrentJar = false;
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344 }
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345
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346 break;
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347 }
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348
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349 default:
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350 {
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351 if (!skipCurrentJar && cur_entry != NULL) {
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352 char* new_name = strdup(package_name);
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353 boot_class_path_packages.append(new_name);
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354 }
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355 }
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356 }
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357 }
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358 // Hand off current packages to current lazy entry (if any)
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359 if ((cur_entry != NULL) &&
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360 (boot_class_path_packages.length() > 0)) {
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361 if (TraceClassLoading && Verbose) {
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362 print_meta_index(cur_entry, boot_class_path_packages);
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363 }
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364 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0),
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365 boot_class_path_packages.length());
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366 cur_entry->set_meta_index(index);
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367 }
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368 fclose(file);
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369 }
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370 }
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371
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372 void ClassLoader::setup_bootstrap_search_path() {
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373 assert(_first_entry == NULL, "should not setup bootstrap class search path twice");
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374 char* sys_class_path = os::strdup(Arguments::get_sysclasspath());
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375 if (TraceClassLoading && Verbose) {
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376 tty->print_cr("[Bootstrap loader class path=%s]", sys_class_path);
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377 }
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378
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379 int len = (int)strlen(sys_class_path);
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380 int end = 0;
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381
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382 // Iterate over class path entries
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383 for (int start = 0; start < len; start = end) {
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384 while (sys_class_path[end] && sys_class_path[end] != os::path_separator()[0]) {
|
|
|
385 end++;
|
|
|
386 }
|
|
|
387 char* path = NEW_C_HEAP_ARRAY(char, end-start+1);
|
|
|
388 strncpy(path, &sys_class_path[start], end-start);
|
|
|
389 path[end-start] = '\0';
|
|
|
390 update_class_path_entry_list(path, false);
|
|
|
391 FREE_C_HEAP_ARRAY(char, path);
|
|
|
392 while (sys_class_path[end] == os::path_separator()[0]) {
|
|
|
393 end++;
|
|
|
394 }
|
|
|
395 }
|
|
|
396 }
|
|
|
397
|
|
|
398 void ClassLoader::create_class_path_entry(char *path, struct stat st, ClassPathEntry **new_entry, bool lazy) {
|
|
|
399 JavaThread* thread = JavaThread::current();
|
|
|
400 if (lazy) {
|
|
|
401 *new_entry = new LazyClassPathEntry(path, st);
|
|
|
402 return;
|
|
|
403 }
|
|
|
404 if ((st.st_mode & S_IFREG) == S_IFREG) {
|
|
|
405 // Regular file, should be a zip file
|
|
|
406 // Canonicalized filename
|
|
|
407 char canonical_path[JVM_MAXPATHLEN];
|
|
|
408 if (!get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) {
|
|
|
409 // This matches the classic VM
|
|
|
410 EXCEPTION_MARK;
|
|
|
411 THROW_MSG(vmSymbols::java_io_IOException(), "Bad pathname");
|
|
|
412 }
|
|
|
413 char* error_msg = NULL;
|
|
|
414 jzfile* zip;
|
|
|
415 {
|
|
|
416 // enable call to C land
|
|
|
417 ThreadToNativeFromVM ttn(thread);
|
|
|
418 HandleMark hm(thread);
|
|
|
419 zip = (*ZipOpen)(canonical_path, &error_msg);
|
|
|
420 }
|
|
|
421 if (zip != NULL && error_msg == NULL) {
|
|
|
422 *new_entry = new ClassPathZipEntry(zip, path);
|
|
|
423 if (TraceClassLoading) {
|
|
|
424 tty->print_cr("[Opened %s]", path);
|
|
|
425 }
|
|
|
426 } else {
|
|
|
427 ResourceMark rm(thread);
|
|
|
428 char *msg;
|
|
|
429 if (error_msg == NULL) {
|
|
|
430 msg = NEW_RESOURCE_ARRAY(char, strlen(path) + 128); ;
|
|
|
431 jio_snprintf(msg, strlen(path) + 127, "error in opening JAR file %s", path);
|
|
|
432 } else {
|
|
|
433 int len = (int)(strlen(path) + strlen(error_msg) + 128);
|
|
|
434 msg = NEW_RESOURCE_ARRAY(char, len); ;
|
|
|
435 jio_snprintf(msg, len - 1, "error in opening JAR file <%s> %s", error_msg, path);
|
|
|
436 }
|
|
|
437 EXCEPTION_MARK;
|
|
|
438 THROW_MSG(vmSymbols::java_lang_ClassNotFoundException(), msg);
|
|
|
439 }
|
|
|
440 } else {
|
|
|
441 // Directory
|
|
|
442 *new_entry = new ClassPathDirEntry(path);
|
|
|
443 if (TraceClassLoading) {
|
|
|
444 tty->print_cr("[Path %s]", path);
|
|
|
445 }
|
|
|
446 }
|
|
|
447 }
|
|
|
448
|
|
|
449
|
|
|
450 // Create a class path zip entry for a given path (return NULL if not found
|
|
|
451 // or zip/JAR file cannot be opened)
|
|
|
452 ClassPathZipEntry* ClassLoader::create_class_path_zip_entry(const char *path) {
|
|
|
453 // check for a regular file
|
|
|
454 struct stat st;
|
|
|
455 if (os::stat(path, &st) == 0) {
|
|
|
456 if ((st.st_mode & S_IFREG) == S_IFREG) {
|
|
|
457 char orig_path[JVM_MAXPATHLEN];
|
|
|
458 char canonical_path[JVM_MAXPATHLEN];
|
|
|
459
|
|
|
460 strcpy(orig_path, path);
|
|
|
461 if (get_canonical_path(orig_path, canonical_path, JVM_MAXPATHLEN)) {
|
|
|
462 char* error_msg = NULL;
|
|
|
463 jzfile* zip;
|
|
|
464 {
|
|
|
465 // enable call to C land
|
|
|
466 JavaThread* thread = JavaThread::current();
|
|
|
467 ThreadToNativeFromVM ttn(thread);
|
|
|
468 HandleMark hm(thread);
|
|
|
469 zip = (*ZipOpen)(canonical_path, &error_msg);
|
|
|
470 }
|
|
|
471 if (zip != NULL && error_msg == NULL) {
|
|
|
472 // create using canonical path
|
|
|
473 return new ClassPathZipEntry(zip, canonical_path);
|
|
|
474 }
|
|
|
475 }
|
|
|
476 }
|
|
|
477 }
|
|
|
478 return NULL;
|
|
|
479 }
|
|
|
480
|
|
|
481 // returns true if entry already on class path
|
|
|
482 bool ClassLoader::contains_entry(ClassPathEntry *entry) {
|
|
|
483 ClassPathEntry* e = _first_entry;
|
|
|
484 while (e != NULL) {
|
|
|
485 // assume zip entries have been canonicalized
|
|
|
486 if (strcmp(entry->name(), e->name()) == 0) {
|
|
|
487 return true;
|
|
|
488 }
|
|
|
489 e = e->next();
|
|
|
490 }
|
|
|
491 return false;
|
|
|
492 }
|
|
|
493
|
|
|
494 void ClassLoader::add_to_list(ClassPathEntry *new_entry) {
|
|
|
495 if (new_entry != NULL) {
|
|
|
496 if (_last_entry == NULL) {
|
|
|
497 _first_entry = _last_entry = new_entry;
|
|
|
498 } else {
|
|
|
499 _last_entry->set_next(new_entry);
|
|
|
500 _last_entry = new_entry;
|
|
|
501 }
|
|
|
502 }
|
|
|
503 }
|
|
|
504
|
|
|
505 void ClassLoader::update_class_path_entry_list(const char *path,
|
|
|
506 bool check_for_duplicates) {
|
|
|
507 struct stat st;
|
|
|
508 if (os::stat((char *)path, &st) == 0) {
|
|
|
509 // File or directory found
|
|
|
510 ClassPathEntry* new_entry = NULL;
|
|
|
511 create_class_path_entry((char *)path, st, &new_entry, LazyBootClassLoader);
|
|
|
512 // The kernel VM adds dynamically to the end of the classloader path and
|
|
|
513 // doesn't reorder the bootclasspath which would break java.lang.Package
|
|
|
514 // (see PackageInfo).
|
|
|
515 // Add new entry to linked list
|
|
|
516 if (!check_for_duplicates || !contains_entry(new_entry)) {
|
|
|
517 add_to_list(new_entry);
|
|
|
518 }
|
|
|
519 }
|
|
|
520 }
|
|
|
521
|
|
|
522 void ClassLoader::print_bootclasspath() {
|
|
|
523 ClassPathEntry* e = _first_entry;
|
|
|
524 tty->print("[bootclasspath= ");
|
|
|
525 while (e != NULL) {
|
|
|
526 tty->print("%s ;", e->name());
|
|
|
527 e = e->next();
|
|
|
528 }
|
|
|
529 tty->print_cr("]");
|
|
|
530 }
|
|
|
531
|
|
|
532 void ClassLoader::load_zip_library() {
|
|
|
533 assert(ZipOpen == NULL, "should not load zip library twice");
|
|
|
534 // First make sure native library is loaded
|
|
|
535 os::native_java_library();
|
|
|
536 // Load zip library
|
|
|
537 char path[JVM_MAXPATHLEN];
|
|
|
538 char ebuf[1024];
|
|
|
539 hpi::dll_build_name(path, sizeof(path), Arguments::get_dll_dir(), "zip");
|
|
|
540 void* handle = hpi::dll_load(path, ebuf, sizeof ebuf);
|
|
|
541 if (handle == NULL) {
|
|
|
542 vm_exit_during_initialization("Unable to load ZIP library", path);
|
|
|
543 }
|
|
|
544 // Lookup zip entry points
|
|
|
545 ZipOpen = CAST_TO_FN_PTR(ZipOpen_t, hpi::dll_lookup(handle, "ZIP_Open"));
|
|
|
546 ZipClose = CAST_TO_FN_PTR(ZipClose_t, hpi::dll_lookup(handle, "ZIP_Close"));
|
|
|
547 FindEntry = CAST_TO_FN_PTR(FindEntry_t, hpi::dll_lookup(handle, "ZIP_FindEntry"));
|
|
|
548 ReadEntry = CAST_TO_FN_PTR(ReadEntry_t, hpi::dll_lookup(handle, "ZIP_ReadEntry"));
|
|
|
549 ReadMappedEntry = CAST_TO_FN_PTR(ReadMappedEntry_t, hpi::dll_lookup(handle, "ZIP_ReadMappedEntry"));
|
|
|
550 GetNextEntry = CAST_TO_FN_PTR(GetNextEntry_t, hpi::dll_lookup(handle, "ZIP_GetNextEntry"));
|
|
|
551
|
|
|
552 // ZIP_Close is not exported on Windows in JDK5.0 so don't abort if ZIP_Close is NULL
|
|
|
553 if (ZipOpen == NULL || FindEntry == NULL || ReadEntry == NULL || GetNextEntry == NULL) {
|
|
|
554 vm_exit_during_initialization("Corrupted ZIP library", path);
|
|
|
555 }
|
|
|
556
|
|
|
557 // Lookup canonicalize entry in libjava.dll
|
|
|
558 void *javalib_handle = os::native_java_library();
|
|
|
559 CanonicalizeEntry = CAST_TO_FN_PTR(canonicalize_fn_t, hpi::dll_lookup(javalib_handle, "Canonicalize"));
|
|
|
560 // This lookup only works on 1.3. Do not check for non-null here
|
|
|
561 }
|
|
|
562
|
|
|
563 // PackageInfo data exists in order to support the java.lang.Package
|
|
|
564 // class. A Package object provides information about a java package
|
|
|
565 // (version, vendor, etc.) which originates in the manifest of the jar
|
|
|
566 // file supplying the package. For application classes, the ClassLoader
|
|
|
567 // object takes care of this.
|
|
|
568
|
|
|
569 // For system (boot) classes, the Java code in the Package class needs
|
|
|
570 // to be able to identify which source jar file contained the boot
|
|
|
571 // class, so that it can extract the manifest from it. This table
|
|
|
572 // identifies java packages with jar files in the boot classpath.
|
|
|
573
|
|
|
574 // Because the boot classpath cannot change, the classpath index is
|
|
|
575 // sufficient to identify the source jar file or directory. (Since
|
|
|
576 // directories have no manifests, the directory name is not required,
|
|
|
577 // but is available.)
|
|
|
578
|
|
|
579 // When using sharing -- the pathnames of entries in the boot classpath
|
|
|
580 // may not be the same at runtime as they were when the archive was
|
|
|
581 // created (NFS, Samba, etc.). The actual files and directories named
|
|
|
582 // in the classpath must be the same files, in the same order, even
|
|
|
583 // though the exact name is not the same.
|
|
|
584
|
|
|
585 class PackageInfo: public BasicHashtableEntry {
|
|
|
586 public:
|
|
|
587 const char* _pkgname; // Package name
|
|
|
588 int _classpath_index; // Index of directory or JAR file loaded from
|
|
|
589
|
|
|
590 PackageInfo* next() {
|
|
|
591 return (PackageInfo*)BasicHashtableEntry::next();
|
|
|
592 }
|
|
|
593
|
|
|
594 const char* pkgname() { return _pkgname; }
|
|
|
595 void set_pkgname(char* pkgname) { _pkgname = pkgname; }
|
|
|
596
|
|
|
597 const char* filename() {
|
|
|
598 return ClassLoader::classpath_entry(_classpath_index)->name();
|
|
|
599 }
|
|
|
600
|
|
|
601 void set_index(int index) {
|
|
|
602 _classpath_index = index;
|
|
|
603 }
|
|
|
604 };
|
|
|
605
|
|
|
606
|
|
|
607 class PackageHashtable : public BasicHashtable {
|
|
|
608 private:
|
|
|
609 inline unsigned int compute_hash(const char *s, int n) {
|
|
|
610 unsigned int val = 0;
|
|
|
611 while (--n >= 0) {
|
|
|
612 val = *s++ + 31 * val;
|
|
|
613 }
|
|
|
614 return val;
|
|
|
615 }
|
|
|
616
|
|
|
617 PackageInfo* bucket(int index) {
|
|
|
618 return (PackageInfo*)BasicHashtable::bucket(index);
|
|
|
619 }
|
|
|
620
|
|
|
621 PackageInfo* get_entry(int index, unsigned int hash,
|
|
|
622 const char* pkgname, size_t n) {
|
|
|
623 for (PackageInfo* pp = bucket(index); pp != NULL; pp = pp->next()) {
|
|
|
624 if (pp->hash() == hash &&
|
|
|
625 strncmp(pkgname, pp->pkgname(), n) == 0 &&
|
|
|
626 pp->pkgname()[n] == '\0') {
|
|
|
627 return pp;
|
|
|
628 }
|
|
|
629 }
|
|
|
630 return NULL;
|
|
|
631 }
|
|
|
632
|
|
|
633 public:
|
|
|
634 PackageHashtable(int table_size)
|
|
|
635 : BasicHashtable(table_size, sizeof(PackageInfo)) {}
|
|
|
636
|
|
|
637 PackageHashtable(int table_size, HashtableBucket* t, int number_of_entries)
|
|
|
638 : BasicHashtable(table_size, sizeof(PackageInfo), t, number_of_entries) {}
|
|
|
639
|
|
|
640 PackageInfo* get_entry(const char* pkgname, int n) {
|
|
|
641 unsigned int hash = compute_hash(pkgname, n);
|
|
|
642 return get_entry(hash_to_index(hash), hash, pkgname, n);
|
|
|
643 }
|
|
|
644
|
|
|
645 PackageInfo* new_entry(char* pkgname, int n) {
|
|
|
646 unsigned int hash = compute_hash(pkgname, n);
|
|
|
647 PackageInfo* pp;
|
|
|
648 pp = (PackageInfo*)BasicHashtable::new_entry(hash);
|
|
|
649 pp->set_pkgname(pkgname);
|
|
|
650 return pp;
|
|
|
651 }
|
|
|
652
|
|
|
653 void add_entry(PackageInfo* pp) {
|
|
|
654 int index = hash_to_index(pp->hash());
|
|
|
655 BasicHashtable::add_entry(index, pp);
|
|
|
656 }
|
|
|
657
|
|
|
658 void copy_pkgnames(const char** packages) {
|
|
|
659 int n = 0;
|
|
|
660 for (int i = 0; i < table_size(); ++i) {
|
|
|
661 for (PackageInfo* pp = bucket(i); pp != NULL; pp = pp->next()) {
|
|
|
662 packages[n++] = pp->pkgname();
|
|
|
663 }
|
|
|
664 }
|
|
|
665 assert(n == number_of_entries(), "just checking");
|
|
|
666 }
|
|
|
667
|
|
|
668 void copy_table(char** top, char* end, PackageHashtable* table);
|
|
|
669 };
|
|
|
670
|
|
|
671
|
|
|
672 void PackageHashtable::copy_table(char** top, char* end,
|
|
|
673 PackageHashtable* table) {
|
|
|
674 // Copy (relocate) the table to the shared space.
|
|
|
675 BasicHashtable::copy_table(top, end);
|
|
|
676
|
|
|
677 // Calculate the space needed for the package name strings.
|
|
|
678 int i;
|
|
|
679 int n = 0;
|
|
|
680 for (i = 0; i < table_size(); ++i) {
|
|
|
681 for (PackageInfo* pp = table->bucket(i);
|
|
|
682 pp != NULL;
|
|
|
683 pp = pp->next()) {
|
|
|
684 n += (int)(strlen(pp->pkgname()) + 1);
|
|
|
685 }
|
|
|
686 }
|
|
|
687 if (*top + n + sizeof(intptr_t) >= end) {
|
|
|
688 warning("\nThe shared miscellaneous data space is not large "
|
|
|
689 "enough to \npreload requested classes. Use "
|
|
|
690 "-XX:SharedMiscDataSize= to increase \nthe initial "
|
|
|
691 "size of the miscellaneous data space.\n");
|
|
|
692 exit(2);
|
|
|
693 }
|
|
|
694
|
|
|
695 // Copy the table data (the strings) to the shared space.
|
|
|
696 n = align_size_up(n, sizeof(HeapWord));
|
|
|
697 *(intptr_t*)(*top) = n;
|
|
|
698 *top += sizeof(intptr_t);
|
|
|
699
|
|
|
700 for (i = 0; i < table_size(); ++i) {
|
|
|
701 for (PackageInfo* pp = table->bucket(i);
|
|
|
702 pp != NULL;
|
|
|
703 pp = pp->next()) {
|
|
|
704 int n1 = (int)(strlen(pp->pkgname()) + 1);
|
|
|
705 pp->set_pkgname((char*)memcpy(*top, pp->pkgname(), n1));
|
|
|
706 *top += n1;
|
|
|
707 }
|
|
|
708 }
|
|
|
709 *top = (char*)align_size_up((intptr_t)*top, sizeof(HeapWord));
|
|
|
710 }
|
|
|
711
|
|
|
712
|
|
|
713 void ClassLoader::copy_package_info_buckets(char** top, char* end) {
|
|
|
714 _package_hash_table->copy_buckets(top, end);
|
|
|
715 }
|
|
|
716
|
|
|
717 void ClassLoader::copy_package_info_table(char** top, char* end) {
|
|
|
718 _package_hash_table->copy_table(top, end, _package_hash_table);
|
|
|
719 }
|
|
|
720
|
|
|
721
|
|
|
722 PackageInfo* ClassLoader::lookup_package(const char *pkgname) {
|
|
|
723 const char *cp = strrchr(pkgname, '/');
|
|
|
724 if (cp != NULL) {
|
|
|
725 // Package prefix found
|
|
|
726 int n = cp - pkgname + 1;
|
|
|
727 return _package_hash_table->get_entry(pkgname, n);
|
|
|
728 }
|
|
|
729 return NULL;
|
|
|
730 }
|
|
|
731
|
|
|
732
|
|
|
733 bool ClassLoader::add_package(const char *pkgname, int classpath_index, TRAPS) {
|
|
|
734 assert(pkgname != NULL, "just checking");
|
|
|
735 // Bootstrap loader no longer holds system loader lock obj serializing
|
|
|
736 // load_instance_class and thereby add_package
|
|
|
737 {
|
|
|
738 MutexLocker ml(PackageTable_lock, THREAD);
|
|
|
739 // First check for previously loaded entry
|
|
|
740 PackageInfo* pp = lookup_package(pkgname);
|
|
|
741 if (pp != NULL) {
|
|
|
742 // Existing entry found, check source of package
|
|
|
743 pp->set_index(classpath_index);
|
|
|
744 return true;
|
|
|
745 }
|
|
|
746
|
|
|
747 const char *cp = strrchr(pkgname, '/');
|
|
|
748 if (cp != NULL) {
|
|
|
749 // Package prefix found
|
|
|
750 int n = cp - pkgname + 1;
|
|
|
751
|
|
|
752 char* new_pkgname = NEW_C_HEAP_ARRAY(char, n + 1);
|
|
|
753 if (new_pkgname == NULL) {
|
|
|
754 return false;
|
|
|
755 }
|
|
|
756
|
|
|
757 memcpy(new_pkgname, pkgname, n);
|
|
|
758 new_pkgname[n] = '\0';
|
|
|
759 pp = _package_hash_table->new_entry(new_pkgname, n);
|
|
|
760 pp->set_index(classpath_index);
|
|
|
761
|
|
|
762 // Insert into hash table
|
|
|
763 _package_hash_table->add_entry(pp);
|
|
|
764 }
|
|
|
765 return true;
|
|
|
766 }
|
|
|
767 }
|
|
|
768
|
|
|
769
|
|
|
770 oop ClassLoader::get_system_package(const char* name, TRAPS) {
|
|
|
771 PackageInfo* pp;
|
|
|
772 {
|
|
|
773 MutexLocker ml(PackageTable_lock, THREAD);
|
|
|
774 pp = lookup_package(name);
|
|
|
775 }
|
|
|
776 if (pp == NULL) {
|
|
|
777 return NULL;
|
|
|
778 } else {
|
|
|
779 Handle p = java_lang_String::create_from_str(pp->filename(), THREAD);
|
|
|
780 return p();
|
|
|
781 }
|
|
|
782 }
|
|
|
783
|
|
|
784
|
|
|
785 objArrayOop ClassLoader::get_system_packages(TRAPS) {
|
|
|
786 ResourceMark rm(THREAD);
|
|
|
787 int nof_entries;
|
|
|
788 const char** packages;
|
|
|
789 {
|
|
|
790 MutexLocker ml(PackageTable_lock, THREAD);
|
|
|
791 // Allocate resource char* array containing package names
|
|
|
792 nof_entries = _package_hash_table->number_of_entries();
|
|
|
793 if ((packages = NEW_RESOURCE_ARRAY(const char*, nof_entries)) == NULL) {
|
|
|
794 return NULL;
|
|
|
795 }
|
|
|
796 _package_hash_table->copy_pkgnames(packages);
|
|
|
797 }
|
|
|
798 // Allocate objArray and fill with java.lang.String
|
|
|
799 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(),
|
|
|
800 nof_entries, CHECK_0);
|
|
|
801 objArrayHandle result(THREAD, r);
|
|
|
802 for (int i = 0; i < nof_entries; i++) {
|
|
|
803 Handle str = java_lang_String::create_from_str(packages[i], CHECK_0);
|
|
|
804 result->obj_at_put(i, str());
|
|
|
805 }
|
|
|
806
|
|
|
807 return result();
|
|
|
808 }
|
|
|
809
|
|
|
810
|
|
|
811 instanceKlassHandle ClassLoader::load_classfile(symbolHandle h_name, TRAPS) {
|
|
|
812 VTuneClassLoadMarker clm;
|
|
|
813 ResourceMark rm(THREAD);
|
|
|
814 EventMark m("loading class " INTPTR_FORMAT, (address)h_name());
|
|
|
815 ThreadProfilerMark tpm(ThreadProfilerMark::classLoaderRegion);
|
|
|
816
|
|
|
817 stringStream st;
|
|
|
818 // st.print() uses too much stack space while handling a StackOverflowError
|
|
|
819 // st.print("%s.class", h_name->as_utf8());
|
|
|
820 st.print_raw(h_name->as_utf8());
|
|
|
821 st.print_raw(".class");
|
|
|
822 char* name = st.as_string();
|
|
|
823
|
|
|
824 // Lookup stream for parsing .class file
|
|
|
825 ClassFileStream* stream = NULL;
|
|
|
826 int classpath_index = 0;
|
|
|
827 {
|
|
|
828 PerfTraceTime vmtimer(perf_accumulated_time());
|
|
|
829 ClassPathEntry* e = _first_entry;
|
|
|
830 while (e != NULL) {
|
|
|
831 stream = e->open_stream(name);
|
|
|
832 if (stream != NULL) {
|
|
|
833 break;
|
|
|
834 }
|
|
|
835 e = e->next();
|
|
|
836 ++classpath_index;
|
|
|
837 }
|
|
|
838 }
|
|
|
839
|
|
|
840 instanceKlassHandle h(THREAD, klassOop(NULL));
|
|
|
841 if (stream != NULL) {
|
|
|
842
|
|
|
843 // class file found, parse it
|
|
|
844 ClassFileParser parser(stream);
|
|
|
845 Handle class_loader;
|
|
|
846 Handle protection_domain;
|
|
|
847 symbolHandle parsed_name;
|
|
|
848 instanceKlassHandle result = parser.parseClassFile(h_name,
|
|
|
849 class_loader,
|
|
|
850 protection_domain,
|
|
|
851 parsed_name,
|
|
|
852 CHECK_(h));
|
|
|
853
|
|
|
854 // add to package table
|
|
|
855 if (add_package(name, classpath_index, THREAD)) {
|
|
|
856 h = result;
|
|
|
857 }
|
|
|
858 }
|
|
|
859
|
|
|
860 return h;
|
|
|
861 }
|
|
|
862
|
|
|
863
|
|
|
864 void ClassLoader::create_package_info_table(HashtableBucket *t, int length,
|
|
|
865 int number_of_entries) {
|
|
|
866 assert(_package_hash_table == NULL, "One package info table allowed.");
|
|
|
867 assert(length == package_hash_table_size * sizeof(HashtableBucket),
|
|
|
868 "bad shared package info size.");
|
|
|
869 _package_hash_table = new PackageHashtable(package_hash_table_size, t,
|
|
|
870 number_of_entries);
|
|
|
871 }
|
|
|
872
|
|
|
873
|
|
|
874 void ClassLoader::create_package_info_table() {
|
|
|
875 assert(_package_hash_table == NULL, "shouldn't have one yet");
|
|
|
876 _package_hash_table = new PackageHashtable(package_hash_table_size);
|
|
|
877 }
|
|
|
878
|
|
|
879
|
|
|
880 // Initialize the class loader's access to methods in libzip. Parse and
|
|
|
881 // process the boot classpath into a list ClassPathEntry objects. Once
|
|
|
882 // this list has been created, it must not change order (see class PackageInfo)
|
|
|
883 // it can be appended to and is by jvmti and the kernel vm.
|
|
|
884
|
|
|
885 void ClassLoader::initialize() {
|
|
|
886 assert(_package_hash_table == NULL, "should have been initialized by now.");
|
|
|
887 EXCEPTION_MARK;
|
|
|
888
|
|
|
889 if (UsePerfData) {
|
|
|
890 // jvmstat performance counters
|
|
|
891 NEWPERFTICKCOUNTER(_perf_accumulated_time, SUN_CLS, "time");
|
|
|
892 NEWPERFTICKCOUNTER(_perf_class_init_time, SUN_CLS, "classInitTime");
|
|
|
893 NEWPERFTICKCOUNTER(_perf_class_verify_time, SUN_CLS, "classVerifyTime");
|
|
|
894 NEWPERFTICKCOUNTER(_perf_class_link_time, SUN_CLS, "classLinkedTime");
|
|
|
895
|
|
|
896 NEWPERFEVENTCOUNTER(_perf_classes_inited, SUN_CLS, "initializedClasses");
|
|
|
897 NEWPERFEVENTCOUNTER(_perf_classes_linked, SUN_CLS, "linkedClasses");
|
|
|
898
|
|
|
899 // The following performance counters are added for measuring the impact
|
|
|
900 // of the bug fix of 6365597. They are mainly focused on finding out
|
|
|
901 // the behavior of system & user-defined classloader lock, whether
|
|
|
902 // ClassLoader.loadClass/findClass is being called synchronized or not.
|
|
|
903 // Also two additional counters are created to see whether 'UnsyncloadClass'
|
|
|
904 // flag is being set or not and how many times load_instance_class call
|
|
|
905 // fails with linkageError etc.
|
|
|
906 NEWPERFEVENTCOUNTER(_sync_systemLoaderLockContentionRate, SUN_CLS,
|
|
|
907 "systemLoaderLockContentionRate");
|
|
|
908 NEWPERFEVENTCOUNTER(_sync_nonSystemLoaderLockContentionRate, SUN_CLS,
|
|
|
909 "nonSystemLoaderLockContentionRate");
|
|
|
910 NEWPERFEVENTCOUNTER(_sync_JVMFindLoadedClassLockFreeCounter, SUN_CLS,
|
|
|
911 "jvmFindLoadedClassNoLockCalls");
|
|
|
912 NEWPERFEVENTCOUNTER(_sync_JVMDefineClassLockFreeCounter, SUN_CLS,
|
|
|
913 "jvmDefineClassNoLockCalls");
|
|
|
914
|
|
|
915 NEWPERFEVENTCOUNTER(_sync_JNIDefineClassLockFreeCounter, SUN_CLS,
|
|
|
916 "jniDefineClassNoLockCalls");
|
|
|
917
|
|
|
918 NEWPERFEVENTCOUNTER(_unsafe_defineClassCallCounter, SUN_CLS,
|
|
|
919 "unsafeDefineClassCalls");
|
|
|
920
|
|
|
921 NEWPERFEVENTCOUNTER(_isUnsyncloadClass, SUN_CLS, "isUnsyncloadClassSet");
|
|
|
922 NEWPERFEVENTCOUNTER(_load_instance_class_failCounter, SUN_CLS,
|
|
|
923 "loadInstanceClassFailRate");
|
|
|
924
|
|
|
925 // increment the isUnsyncloadClass counter if UnsyncloadClass is set.
|
|
|
926 if (UnsyncloadClass) {
|
|
|
927 _isUnsyncloadClass->inc();
|
|
|
928 }
|
|
|
929 }
|
|
|
930
|
|
|
931 // lookup zip library entry points
|
|
|
932 load_zip_library();
|
|
|
933 // initialize search path
|
|
|
934 setup_bootstrap_search_path();
|
|
|
935 if (LazyBootClassLoader) {
|
|
|
936 // set up meta index which makes boot classpath initialization lazier
|
|
|
937 setup_meta_index();
|
|
|
938 }
|
|
|
939 }
|
|
|
940
|
|
|
941
|
|
|
942 jlong ClassLoader::classloader_time_ms() {
|
|
|
943 return UsePerfData ?
|
|
|
944 Management::ticks_to_ms(_perf_accumulated_time->get_value()) : -1;
|
|
|
945 }
|
|
|
946
|
|
|
947 jlong ClassLoader::class_init_count() {
|
|
|
948 return UsePerfData ? _perf_classes_inited->get_value() : -1;
|
|
|
949 }
|
|
|
950
|
|
|
951 jlong ClassLoader::class_init_time_ms() {
|
|
|
952 return UsePerfData ?
|
|
|
953 Management::ticks_to_ms(_perf_class_init_time->get_value()) : -1;
|
|
|
954 }
|
|
|
955
|
|
|
956 jlong ClassLoader::class_verify_time_ms() {
|
|
|
957 return UsePerfData ?
|
|
|
958 Management::ticks_to_ms(_perf_class_verify_time->get_value()) : -1;
|
|
|
959 }
|
|
|
960
|
|
|
961 jlong ClassLoader::class_link_count() {
|
|
|
962 return UsePerfData ? _perf_classes_linked->get_value() : -1;
|
|
|
963 }
|
|
|
964
|
|
|
965 jlong ClassLoader::class_link_time_ms() {
|
|
|
966 return UsePerfData ?
|
|
|
967 Management::ticks_to_ms(_perf_class_link_time->get_value()) : -1;
|
|
|
968 }
|
|
|
969
|
|
|
970 int ClassLoader::compute_Object_vtable() {
|
|
|
971 // hardwired for JDK1.2 -- would need to duplicate class file parsing
|
|
|
972 // code to determine actual value from file
|
|
|
973 // Would be value '11' if finals were in vtable
|
|
|
974 int JDK_1_2_Object_vtable_size = 5;
|
|
|
975 return JDK_1_2_Object_vtable_size * vtableEntry::size();
|
|
|
976 }
|
|
|
977
|
|
|
978
|
|
|
979 void classLoader_init() {
|
|
|
980 ClassLoader::initialize();
|
|
|
981 }
|
|
|
982
|
|
|
983
|
|
|
984 bool ClassLoader::get_canonical_path(char* orig, char* out, int len) {
|
|
|
985 assert(orig != NULL && out != NULL && len > 0, "bad arguments");
|
|
|
986 if (CanonicalizeEntry != NULL) {
|
|
|
987 JNIEnv* env = JavaThread::current()->jni_environment();
|
|
|
988 if ((CanonicalizeEntry)(env, hpi::native_path(orig), out, len) < 0) {
|
|
|
989 return false;
|
|
|
990 }
|
|
|
991 } else {
|
|
|
992 // On JDK 1.2.2 the Canonicalize does not exist, so just do nothing
|
|
|
993 strncpy(out, orig, len);
|
|
|
994 out[len - 1] = '\0';
|
|
|
995 }
|
|
|
996 return true;
|
|
|
997 }
|
|
|
998
|
|
|
999 #ifndef PRODUCT
|
|
|
1000
|
|
|
1001 void ClassLoader::verify() {
|
|
|
1002 _package_hash_table->verify();
|
|
|
1003 }
|
|
|
1004
|
|
|
1005
|
|
|
1006 // CompileTheWorld
|
|
|
1007 //
|
|
|
1008 // Iterates over all class path entries and forces compilation of all methods
|
|
|
1009 // in all classes found. Currently, only zip/jar archives are searched.
|
|
|
1010 //
|
|
|
1011 // The classes are loaded by the Java level bootstrap class loader, and the
|
|
|
1012 // initializer is called. If DelayCompilationDuringStartup is true (default),
|
|
|
1013 // the interpreter will run the initialization code. Note that forcing
|
|
|
1014 // initialization in this way could potentially lead to initialization order
|
|
|
1015 // problems, in which case we could just force the initialization bit to be set.
|
|
|
1016
|
|
|
1017
|
|
|
1018 // We need to iterate over the contents of a zip/jar file, so we replicate the
|
|
|
1019 // jzcell and jzfile definitions from zip_util.h but rename jzfile to real_jzfile,
|
|
|
1020 // since jzfile already has a void* definition.
|
|
|
1021 //
|
|
|
1022 // Note that this is only used in debug mode.
|
|
|
1023 //
|
|
|
1024 // HotSpot integration note:
|
|
|
1025 // Matches zip_util.h 1.14 99/06/01 from jdk1.3 beta H build
|
|
|
1026
|
|
|
1027
|
|
|
1028 // JDK 1.3 version
|
|
|
1029 typedef struct real_jzentry13 { /* Zip file entry */
|
|
|
1030 char *name; /* entry name */
|
|
|
1031 jint time; /* modification time */
|
|
|
1032 jint size; /* size of uncompressed data */
|
|
|
1033 jint csize; /* size of compressed data (zero if uncompressed) */
|
|
|
1034 jint crc; /* crc of uncompressed data */
|
|
|
1035 char *comment; /* optional zip file comment */
|
|
|
1036 jbyte *extra; /* optional extra data */
|
|
|
1037 jint pos; /* position of LOC header (if negative) or data */
|
|
|
1038 } real_jzentry13;
|
|
|
1039
|
|
|
1040 typedef struct real_jzfile13 { /* Zip file */
|
|
|
1041 char *name; /* zip file name */
|
|
|
1042 jint refs; /* number of active references */
|
|
|
1043 jint fd; /* open file descriptor */
|
|
|
1044 void *lock; /* read lock */
|
|
|
1045 char *comment; /* zip file comment */
|
|
|
1046 char *msg; /* zip error message */
|
|
|
1047 void *entries; /* array of hash cells */
|
|
|
1048 jint total; /* total number of entries */
|
|
|
1049 unsigned short *table; /* Hash chain heads: indexes into entries */
|
|
|
1050 jint tablelen; /* number of hash eads */
|
|
|
1051 real_jzfile13 *next; /* next zip file in search list */
|
|
|
1052 jzentry *cache; /* we cache the most recently freed jzentry */
|
|
|
1053 /* Information on metadata names in META-INF directory */
|
|
|
1054 char **metanames; /* array of meta names (may have null names) */
|
|
|
1055 jint metacount; /* number of slots in metanames array */
|
|
|
1056 /* If there are any per-entry comments, they are in the comments array */
|
|
|
1057 char **comments;
|
|
|
1058 } real_jzfile13;
|
|
|
1059
|
|
|
1060 // JDK 1.2 version
|
|
|
1061 typedef struct real_jzentry12 { /* Zip file entry */
|
|
|
1062 char *name; /* entry name */
|
|
|
1063 jint time; /* modification time */
|
|
|
1064 jint size; /* size of uncompressed data */
|
|
|
1065 jint csize; /* size of compressed data (zero if uncompressed) */
|
|
|
1066 jint crc; /* crc of uncompressed data */
|
|
|
1067 char *comment; /* optional zip file comment */
|
|
|
1068 jbyte *extra; /* optional extra data */
|
|
|
1069 jint pos; /* position of LOC header (if negative) or data */
|
|
|
1070 struct real_jzentry12 *next; /* next entry in hash table */
|
|
|
1071 } real_jzentry12;
|
|
|
1072
|
|
|
1073 typedef struct real_jzfile12 { /* Zip file */
|
|
|
1074 char *name; /* zip file name */
|
|
|
1075 jint refs; /* number of active references */
|
|
|
1076 jint fd; /* open file descriptor */
|
|
|
1077 void *lock; /* read lock */
|
|
|
1078 char *comment; /* zip file comment */
|
|
|
1079 char *msg; /* zip error message */
|
|
|
1080 real_jzentry12 *entries; /* array of zip entries */
|
|
|
1081 jint total; /* total number of entries */
|
|
|
1082 real_jzentry12 **table; /* hash table of entries */
|
|
|
1083 jint tablelen; /* number of buckets */
|
|
|
1084 jzfile *next; /* next zip file in search list */
|
|
|
1085 } real_jzfile12;
|
|
|
1086
|
|
|
1087
|
|
|
1088 void ClassPathDirEntry::compile_the_world(Handle loader, TRAPS) {
|
|
|
1089 // For now we only compile all methods in all classes in zip/jar files
|
|
|
1090 tty->print_cr("CompileTheWorld : Skipped classes in %s", _dir);
|
|
|
1091 tty->cr();
|
|
|
1092 }
|
|
|
1093
|
|
|
1094
|
|
|
1095 bool ClassPathDirEntry::is_rt_jar() {
|
|
|
1096 return false;
|
|
|
1097 }
|
|
|
1098
|
|
|
1099 void ClassPathZipEntry::compile_the_world(Handle loader, TRAPS) {
|
|
|
1100 if (JDK_Version::is_jdk12x_version()) {
|
|
|
1101 compile_the_world12(loader, THREAD);
|
|
|
1102 } else {
|
|
|
1103 compile_the_world13(loader, THREAD);
|
|
|
1104 }
|
|
|
1105 if (HAS_PENDING_EXCEPTION) {
|
|
|
1106 if (PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) {
|
|
|
1107 CLEAR_PENDING_EXCEPTION;
|
|
|
1108 tty->print_cr("\nCompileTheWorld : Ran out of memory\n");
|
|
|
1109 size_t used = Universe::heap()->permanent_used();
|
|
|
1110 size_t capacity = Universe::heap()->permanent_capacity();
|
|
|
1111 tty->print_cr("Permanent generation used %dK of %dK", used/K, capacity/K);
|
|
|
1112 tty->print_cr("Increase size by setting e.g. -XX:MaxPermSize=%dK\n", capacity*2/K);
|
|
|
1113 } else {
|
|
|
1114 tty->print_cr("\nCompileTheWorld : Unexpected exception occurred\n");
|
|
|
1115 }
|
|
|
1116 }
|
|
|
1117 }
|
|
|
1118
|
|
|
1119 // Version that works for JDK 1.3.x
|
|
|
1120 void ClassPathZipEntry::compile_the_world13(Handle loader, TRAPS) {
|
|
|
1121 real_jzfile13* zip = (real_jzfile13*) _zip;
|
|
|
1122 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name);
|
|
|
1123 tty->cr();
|
|
|
1124 // Iterate over all entries in zip file
|
|
|
1125 for (int n = 0; ; n++) {
|
|
|
1126 real_jzentry13 * ze = (real_jzentry13 *)((*GetNextEntry)(_zip, n));
|
|
|
1127 if (ze == NULL) break;
|
|
|
1128 ClassLoader::compile_the_world_in(ze->name, loader, CHECK);
|
|
|
1129 }
|
|
|
1130 }
|
|
|
1131
|
|
|
1132
|
|
|
1133 // Version that works for JDK 1.2.x
|
|
|
1134 void ClassPathZipEntry::compile_the_world12(Handle loader, TRAPS) {
|
|
|
1135 real_jzfile12* zip = (real_jzfile12*) _zip;
|
|
|
1136 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name);
|
|
|
1137 tty->cr();
|
|
|
1138 // Iterate over all entries in zip file
|
|
|
1139 for (int n = 0; ; n++) {
|
|
|
1140 real_jzentry12 * ze = (real_jzentry12 *)((*GetNextEntry)(_zip, n));
|
|
|
1141 if (ze == NULL) break;
|
|
|
1142 ClassLoader::compile_the_world_in(ze->name, loader, CHECK);
|
|
|
1143 }
|
|
|
1144 }
|
|
|
1145
|
|
|
1146 bool ClassPathZipEntry::is_rt_jar() {
|
|
|
1147 if (JDK_Version::is_jdk12x_version()) {
|
|
|
1148 return is_rt_jar12();
|
|
|
1149 } else {
|
|
|
1150 return is_rt_jar13();
|
|
|
1151 }
|
|
|
1152 }
|
|
|
1153
|
|
|
1154 // JDK 1.3 version
|
|
|
1155 bool ClassPathZipEntry::is_rt_jar13() {
|
|
|
1156 real_jzfile13* zip = (real_jzfile13*) _zip;
|
|
|
1157 int len = (int)strlen(zip->name);
|
|
|
1158 // Check whether zip name ends in "rt.jar"
|
|
|
1159 // This will match other archives named rt.jar as well, but this is
|
|
|
1160 // only used for debugging.
|
|
|
1161 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0);
|
|
|
1162 }
|
|
|
1163
|
|
|
1164 // JDK 1.2 version
|
|
|
1165 bool ClassPathZipEntry::is_rt_jar12() {
|
|
|
1166 real_jzfile12* zip = (real_jzfile12*) _zip;
|
|
|
1167 int len = (int)strlen(zip->name);
|
|
|
1168 // Check whether zip name ends in "rt.jar"
|
|
|
1169 // This will match other archives named rt.jar as well, but this is
|
|
|
1170 // only used for debugging.
|
|
|
1171 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0);
|
|
|
1172 }
|
|
|
1173
|
|
|
1174 void LazyClassPathEntry::compile_the_world(Handle loader, TRAPS) {
|
|
|
1175 resolve_entry()->compile_the_world(loader, CHECK);
|
|
|
1176 }
|
|
|
1177
|
|
|
1178 bool LazyClassPathEntry::is_rt_jar() {
|
|
|
1179 return resolve_entry()->is_rt_jar();
|
|
|
1180 }
|
|
|
1181
|
|
|
1182 void ClassLoader::compile_the_world() {
|
|
|
1183 EXCEPTION_MARK;
|
|
|
1184 HandleMark hm(THREAD);
|
|
|
1185 ResourceMark rm(THREAD);
|
|
|
1186 // Make sure we don't run with background compilation
|
|
|
1187 BackgroundCompilation = false;
|
|
|
1188 // Find bootstrap loader
|
|
|
1189 Handle system_class_loader (THREAD, SystemDictionary::java_system_loader());
|
|
|
1190 // Iterate over all bootstrap class path entries
|
|
|
1191 ClassPathEntry* e = _first_entry;
|
|
|
1192 while (e != NULL) {
|
|
|
1193 // We stop at rt.jar, unless it is the first bootstrap path entry
|
|
|
1194 if (e->is_rt_jar() && e != _first_entry) break;
|
|
|
1195 e->compile_the_world(system_class_loader, CATCH);
|
|
|
1196 e = e->next();
|
|
|
1197 }
|
|
|
1198 tty->print_cr("CompileTheWorld : Done");
|
|
|
1199 {
|
|
|
1200 // Print statistics as if before normal exit:
|
|
|
1201 extern void print_statistics();
|
|
|
1202 print_statistics();
|
|
|
1203 }
|
|
|
1204 vm_exit(0);
|
|
|
1205 }
|
|
|
1206
|
|
|
1207 int ClassLoader::_compile_the_world_counter = 0;
|
|
|
1208
|
|
|
1209 void ClassLoader::compile_the_world_in(char* name, Handle loader, TRAPS) {
|
|
|
1210 int len = (int)strlen(name);
|
|
|
1211 if (len > 6 && strcmp(".class", name + len - 6) == 0) {
|
|
|
1212 // We have a .class file
|
|
|
1213 char buffer[2048];
|
|
|
1214 strncpy(buffer, name, len - 6);
|
|
|
1215 buffer[len-6] = 0;
|
|
|
1216 // If the file has a period after removing .class, it's not really a
|
|
|
1217 // valid class file. The class loader will check everything else.
|
|
|
1218 if (strchr(buffer, '.') == NULL) {
|
|
|
1219 _compile_the_world_counter++;
|
|
|
1220 if (_compile_the_world_counter >= CompileTheWorldStartAt && _compile_the_world_counter <= CompileTheWorldStopAt) {
|
|
|
1221 // Construct name without extension
|
|
|
1222 symbolHandle sym = oopFactory::new_symbol_handle(buffer, CHECK);
|
|
|
1223 // Use loader to load and initialize class
|
|
|
1224 klassOop ik = SystemDictionary::resolve_or_null(sym, loader, Handle(), THREAD);
|
|
|
1225 instanceKlassHandle k (THREAD, ik);
|
|
|
1226 if (k.not_null() && !HAS_PENDING_EXCEPTION) {
|
|
|
1227 k->initialize(THREAD);
|
|
|
1228 }
|
|
|
1229 bool exception_occurred = HAS_PENDING_EXCEPTION;
|
|
|
1230 CLEAR_PENDING_EXCEPTION;
|
|
|
1231 if (k.is_null() || (exception_occurred && !CompileTheWorldIgnoreInitErrors)) {
|
|
|
1232 // If something went wrong (e.g. ExceptionInInitializerError) we skip this class
|
|
|
1233 tty->print_cr("CompileTheWorld (%d) : Skipping %s", _compile_the_world_counter, buffer);
|
|
|
1234 } else {
|
|
|
1235 tty->print_cr("CompileTheWorld (%d) : %s", _compile_the_world_counter, buffer);
|
|
|
1236 // Preload all classes to get around uncommon traps
|
|
|
1237 if (CompileTheWorldPreloadClasses) {
|
|
|
1238 constantPoolKlass::preload_and_initialize_all_classes(k->constants(), THREAD);
|
|
|
1239 if (HAS_PENDING_EXCEPTION) {
|
|
|
1240 // If something went wrong in preloading we just ignore it
|
|
|
1241 CLEAR_PENDING_EXCEPTION;
|
|
|
1242 tty->print_cr("Preloading failed for (%d) %s", _compile_the_world_counter, buffer);
|
|
|
1243 }
|
|
|
1244 }
|
|
|
1245 // Iterate over all methods in class
|
|
|
1246 for (int n = 0; n < k->methods()->length(); n++) {
|
|
|
1247 methodHandle m (THREAD, methodOop(k->methods()->obj_at(n)));
|
|
|
1248 if (CompilationPolicy::canBeCompiled(m)) {
|
|
|
1249 // Force compilation
|
|
|
1250 CompileBroker::compile_method(m, InvocationEntryBci,
|
|
|
1251 methodHandle(), 0, "CTW", THREAD);
|
|
|
1252 if (HAS_PENDING_EXCEPTION) {
|
|
|
1253 CLEAR_PENDING_EXCEPTION;
|
|
|
1254 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_counter, m->name()->as_C_string());
|
|
|
1255 }
|
|
|
1256 if (TieredCompilation) {
|
|
|
1257 // Clobber the first compile and force second tier compilation
|
|
|
1258 m->clear_code();
|
|
|
1259 CompileBroker::compile_method(m, InvocationEntryBci,
|
|
|
1260 methodHandle(), 0, "CTW", THREAD);
|
|
|
1261 if (HAS_PENDING_EXCEPTION) {
|
|
|
1262 CLEAR_PENDING_EXCEPTION;
|
|
|
1263 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_counter, m->name()->as_C_string());
|
|
|
1264 }
|
|
|
1265 }
|
|
|
1266 }
|
|
|
1267 }
|
|
|
1268 }
|
|
|
1269 }
|
|
|
1270 }
|
|
|
1271 }
|
|
|
1272 }
|
|
|
1273
|
|
|
1274 #endif //PRODUCT
|
