Mercurial > hg > truffle
annotate src/share/vm/classfile/classLoader.cpp @ 12255:3a4e6c929bf3
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Reviewed-by: kvn, vlivanov
| author | twisti |
|---|---|
| date | Thu, 12 Sep 2013 14:53:44 -0700 |
| parents | 7e7dd25666da |
| children | cefad50507d8 2b8e28fdf503 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classFileParser.hpp" | |
| 27 #include "classfile/classFileStream.hpp" | |
| 28 #include "classfile/classLoader.hpp" | |
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29 #include "classfile/classLoaderData.inline.hpp" |
| 1972 | 30 #include "classfile/javaClasses.hpp" |
| 31 #include "classfile/systemDictionary.hpp" | |
| 32 #include "classfile/vmSymbols.hpp" | |
| 33 #include "compiler/compileBroker.hpp" | |
| 34 #include "gc_interface/collectedHeap.inline.hpp" | |
| 35 #include "interpreter/bytecodeStream.hpp" | |
| 36 #include "interpreter/oopMapCache.hpp" | |
| 37 #include "memory/allocation.inline.hpp" | |
| 38 #include "memory/generation.hpp" | |
| 39 #include "memory/oopFactory.hpp" | |
| 40 #include "memory/universe.inline.hpp" | |
| 41 #include "oops/instanceKlass.hpp" | |
| 42 #include "oops/instanceRefKlass.hpp" | |
| 43 #include "oops/oop.inline.hpp" | |
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44 #include "oops/symbol.hpp" |
| 1972 | 45 #include "prims/jvm_misc.hpp" |
| 46 #include "runtime/arguments.hpp" | |
| 47 #include "runtime/compilationPolicy.hpp" | |
| 48 #include "runtime/fprofiler.hpp" | |
| 49 #include "runtime/handles.hpp" | |
| 50 #include "runtime/handles.inline.hpp" | |
| 51 #include "runtime/init.hpp" | |
| 52 #include "runtime/interfaceSupport.hpp" | |
| 53 #include "runtime/java.hpp" | |
| 54 #include "runtime/javaCalls.hpp" | |
| 55 #include "runtime/threadCritical.hpp" | |
| 56 #include "runtime/timer.hpp" | |
| 57 #include "services/management.hpp" | |
| 58 #include "services/threadService.hpp" | |
| 59 #include "utilities/events.hpp" | |
| 60 #include "utilities/hashtable.hpp" | |
| 61 #include "utilities/hashtable.inline.hpp" | |
| 62 #ifdef TARGET_OS_FAMILY_linux | |
| 63 # include "os_linux.inline.hpp" | |
| 64 #endif | |
| 65 #ifdef TARGET_OS_FAMILY_solaris | |
| 66 # include "os_solaris.inline.hpp" | |
| 67 #endif | |
| 68 #ifdef TARGET_OS_FAMILY_windows | |
| 69 # include "os_windows.inline.hpp" | |
| 70 #endif | |
| 3960 | 71 #ifdef TARGET_OS_FAMILY_bsd |
| 72 # include "os_bsd.inline.hpp" | |
| 73 #endif | |
| 0 | 74 |
| 75 | |
| 76 // Entry points in zip.dll for loading zip/jar file entries | |
| 77 | |
| 78 typedef void * * (JNICALL *ZipOpen_t)(const char *name, char **pmsg); | |
| 79 typedef void (JNICALL *ZipClose_t)(jzfile *zip); | |
| 80 typedef jzentry* (JNICALL *FindEntry_t)(jzfile *zip, const char *name, jint *sizeP, jint *nameLen); | |
| 81 typedef jboolean (JNICALL *ReadEntry_t)(jzfile *zip, jzentry *entry, unsigned char *buf, char *namebuf); | |
| 82 typedef jboolean (JNICALL *ReadMappedEntry_t)(jzfile *zip, jzentry *entry, unsigned char **buf, char *namebuf); | |
| 83 typedef jzentry* (JNICALL *GetNextEntry_t)(jzfile *zip, jint n); | |
| 84 | |
| 85 static ZipOpen_t ZipOpen = NULL; | |
| 86 static ZipClose_t ZipClose = NULL; | |
| 87 static FindEntry_t FindEntry = NULL; | |
| 88 static ReadEntry_t ReadEntry = NULL; | |
| 89 static ReadMappedEntry_t ReadMappedEntry = NULL; | |
| 90 static GetNextEntry_t GetNextEntry = NULL; | |
| 91 static canonicalize_fn_t CanonicalizeEntry = NULL; | |
| 92 | |
| 93 // Globals | |
| 94 | |
| 95 PerfCounter* ClassLoader::_perf_accumulated_time = NULL; | |
| 96 PerfCounter* ClassLoader::_perf_classes_inited = NULL; | |
| 97 PerfCounter* ClassLoader::_perf_class_init_time = NULL; | |
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98 PerfCounter* ClassLoader::_perf_class_init_selftime = NULL; |
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99 PerfCounter* ClassLoader::_perf_classes_verified = NULL; |
| 0 | 100 PerfCounter* ClassLoader::_perf_class_verify_time = NULL; |
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101 PerfCounter* ClassLoader::_perf_class_verify_selftime = NULL; |
| 0 | 102 PerfCounter* ClassLoader::_perf_classes_linked = NULL; |
| 103 PerfCounter* ClassLoader::_perf_class_link_time = NULL; | |
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104 PerfCounter* ClassLoader::_perf_class_link_selftime = NULL; |
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105 PerfCounter* ClassLoader::_perf_class_parse_time = NULL; |
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106 PerfCounter* ClassLoader::_perf_class_parse_selftime = NULL; |
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107 PerfCounter* ClassLoader::_perf_sys_class_lookup_time = NULL; |
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108 PerfCounter* ClassLoader::_perf_shared_classload_time = NULL; |
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109 PerfCounter* ClassLoader::_perf_sys_classload_time = NULL; |
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110 PerfCounter* ClassLoader::_perf_app_classload_time = NULL; |
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111 PerfCounter* ClassLoader::_perf_app_classload_selftime = NULL; |
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112 PerfCounter* ClassLoader::_perf_app_classload_count = NULL; |
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113 PerfCounter* ClassLoader::_perf_define_appclasses = NULL; |
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114 PerfCounter* ClassLoader::_perf_define_appclass_time = NULL; |
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115 PerfCounter* ClassLoader::_perf_define_appclass_selftime = NULL; |
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116 PerfCounter* ClassLoader::_perf_app_classfile_bytes_read = NULL; |
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117 PerfCounter* ClassLoader::_perf_sys_classfile_bytes_read = NULL; |
| 0 | 118 PerfCounter* ClassLoader::_sync_systemLoaderLockContentionRate = NULL; |
| 119 PerfCounter* ClassLoader::_sync_nonSystemLoaderLockContentionRate = NULL; | |
| 120 PerfCounter* ClassLoader::_sync_JVMFindLoadedClassLockFreeCounter = NULL; | |
| 121 PerfCounter* ClassLoader::_sync_JVMDefineClassLockFreeCounter = NULL; | |
| 122 PerfCounter* ClassLoader::_sync_JNIDefineClassLockFreeCounter = NULL; | |
| 123 PerfCounter* ClassLoader::_unsafe_defineClassCallCounter = NULL; | |
| 124 PerfCounter* ClassLoader::_isUnsyncloadClass = NULL; | |
| 125 PerfCounter* ClassLoader::_load_instance_class_failCounter = NULL; | |
| 126 | |
| 127 ClassPathEntry* ClassLoader::_first_entry = NULL; | |
| 128 ClassPathEntry* ClassLoader::_last_entry = NULL; | |
| 129 PackageHashtable* ClassLoader::_package_hash_table = NULL; | |
| 130 | |
| 131 // helper routines | |
| 132 bool string_starts_with(const char* str, const char* str_to_find) { | |
| 133 size_t str_len = strlen(str); | |
| 134 size_t str_to_find_len = strlen(str_to_find); | |
| 135 if (str_to_find_len > str_len) { | |
| 136 return false; | |
| 137 } | |
| 138 return (strncmp(str, str_to_find, str_to_find_len) == 0); | |
| 139 } | |
| 140 | |
| 141 bool string_ends_with(const char* str, const char* str_to_find) { | |
| 142 size_t str_len = strlen(str); | |
| 143 size_t str_to_find_len = strlen(str_to_find); | |
| 144 if (str_to_find_len > str_len) { | |
| 145 return false; | |
| 146 } | |
| 147 return (strncmp(str + (str_len - str_to_find_len), str_to_find, str_to_find_len) == 0); | |
| 148 } | |
| 149 | |
| 150 | |
| 151 MetaIndex::MetaIndex(char** meta_package_names, int num_meta_package_names) { | |
| 152 if (num_meta_package_names == 0) { | |
| 153 _meta_package_names = NULL; | |
| 154 _num_meta_package_names = 0; | |
| 155 } else { | |
| 6197 | 156 _meta_package_names = NEW_C_HEAP_ARRAY(char*, num_meta_package_names, mtClass); |
| 0 | 157 _num_meta_package_names = num_meta_package_names; |
| 158 memcpy(_meta_package_names, meta_package_names, num_meta_package_names * sizeof(char*)); | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 | |
| 163 MetaIndex::~MetaIndex() { | |
| 6197 | 164 FREE_C_HEAP_ARRAY(char*, _meta_package_names, mtClass); |
| 0 | 165 } |
| 166 | |
| 167 | |
| 168 bool MetaIndex::may_contain(const char* class_name) { | |
| 169 if ( _num_meta_package_names == 0) { | |
| 170 return false; | |
| 171 } | |
| 172 size_t class_name_len = strlen(class_name); | |
| 173 for (int i = 0; i < _num_meta_package_names; i++) { | |
| 174 char* pkg = _meta_package_names[i]; | |
| 175 size_t pkg_len = strlen(pkg); | |
| 176 size_t min_len = MIN2(class_name_len, pkg_len); | |
| 177 if (!strncmp(class_name, pkg, min_len)) { | |
| 178 return true; | |
| 179 } | |
| 180 } | |
| 181 return false; | |
| 182 } | |
| 183 | |
| 184 | |
| 185 ClassPathEntry::ClassPathEntry() { | |
| 186 set_next(NULL); | |
| 187 } | |
| 188 | |
| 189 | |
| 190 bool ClassPathEntry::is_lazy() { | |
| 191 return false; | |
| 192 } | |
| 193 | |
| 194 ClassPathDirEntry::ClassPathDirEntry(char* dir) : ClassPathEntry() { | |
| 6197 | 195 _dir = NEW_C_HEAP_ARRAY(char, strlen(dir)+1, mtClass); |
| 0 | 196 strcpy(_dir, dir); |
| 197 } | |
| 198 | |
| 199 | |
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200 ClassFileStream* ClassPathDirEntry::open_stream(const char* name, TRAPS) { |
| 0 | 201 // construct full path name |
| 202 char path[JVM_MAXPATHLEN]; | |
| 203 if (jio_snprintf(path, sizeof(path), "%s%s%s", _dir, os::file_separator(), name) == -1) { | |
| 204 return NULL; | |
| 205 } | |
| 206 // check if file exists | |
| 207 struct stat st; | |
| 208 if (os::stat(path, &st) == 0) { | |
| 209 // found file, open it | |
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210 int file_handle = os::open(path, 0, 0); |
| 0 | 211 if (file_handle != -1) { |
| 212 // read contents into resource array | |
| 213 u1* buffer = NEW_RESOURCE_ARRAY(u1, st.st_size); | |
| 214 size_t num_read = os::read(file_handle, (char*) buffer, st.st_size); | |
| 215 // close file | |
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216 os::close(file_handle); |
| 0 | 217 // construct ClassFileStream |
| 218 if (num_read == (size_t)st.st_size) { | |
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219 if (UsePerfData) { |
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220 ClassLoader::perf_sys_classfile_bytes_read()->inc(num_read); |
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221 } |
| 0 | 222 return new ClassFileStream(buffer, st.st_size, _dir); // Resource allocated |
| 223 } | |
| 224 } | |
| 225 } | |
| 226 return NULL; | |
| 227 } | |
| 228 | |
| 229 | |
| 230 ClassPathZipEntry::ClassPathZipEntry(jzfile* zip, const char* zip_name) : ClassPathEntry() { | |
| 231 _zip = zip; | |
| 6197 | 232 _zip_name = NEW_C_HEAP_ARRAY(char, strlen(zip_name)+1, mtClass); |
| 0 | 233 strcpy(_zip_name, zip_name); |
| 234 } | |
| 235 | |
| 236 ClassPathZipEntry::~ClassPathZipEntry() { | |
| 237 if (ZipClose != NULL) { | |
| 238 (*ZipClose)(_zip); | |
| 239 } | |
| 6197 | 240 FREE_C_HEAP_ARRAY(char, _zip_name, mtClass); |
| 0 | 241 } |
| 242 | |
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243 ClassFileStream* ClassPathZipEntry::open_stream(const char* name, TRAPS) { |
| 0 | 244 // enable call to C land |
| 245 JavaThread* thread = JavaThread::current(); | |
| 246 ThreadToNativeFromVM ttn(thread); | |
| 247 // check whether zip archive contains name | |
| 248 jint filesize, name_len; | |
| 249 jzentry* entry = (*FindEntry)(_zip, name, &filesize, &name_len); | |
| 250 if (entry == NULL) return NULL; | |
| 251 u1* buffer; | |
| 252 char name_buf[128]; | |
| 253 char* filename; | |
| 254 if (name_len < 128) { | |
| 255 filename = name_buf; | |
| 256 } else { | |
| 257 filename = NEW_RESOURCE_ARRAY(char, name_len + 1); | |
| 258 } | |
| 259 | |
| 260 // file found, get pointer to class in mmaped jar file. | |
| 261 if (ReadMappedEntry == NULL || | |
| 262 !(*ReadMappedEntry)(_zip, entry, &buffer, filename)) { | |
| 263 // mmaped access not available, perhaps due to compression, | |
| 264 // read contents into resource array | |
| 265 buffer = NEW_RESOURCE_ARRAY(u1, filesize); | |
| 266 if (!(*ReadEntry)(_zip, entry, buffer, filename)) return NULL; | |
| 267 } | |
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268 if (UsePerfData) { |
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269 ClassLoader::perf_sys_classfile_bytes_read()->inc(filesize); |
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270 } |
| 0 | 271 // return result |
| 272 return new ClassFileStream(buffer, filesize, _zip_name); // Resource allocated | |
| 273 } | |
| 274 | |
| 275 // invoke function for each entry in the zip file | |
| 276 void ClassPathZipEntry::contents_do(void f(const char* name, void* context), void* context) { | |
| 277 JavaThread* thread = JavaThread::current(); | |
| 278 HandleMark handle_mark(thread); | |
| 279 ThreadToNativeFromVM ttn(thread); | |
| 280 for (int n = 0; ; n++) { | |
| 281 jzentry * ze = ((*GetNextEntry)(_zip, n)); | |
| 282 if (ze == NULL) break; | |
| 283 (*f)(ze->name, context); | |
| 284 } | |
| 285 } | |
| 286 | |
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287 LazyClassPathEntry::LazyClassPathEntry(char* path, const struct stat* st) : ClassPathEntry() { |
| 0 | 288 _path = strdup(path); |
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289 _st = *st; |
| 0 | 290 _meta_index = NULL; |
| 291 _resolved_entry = NULL; | |
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292 _has_error = false; |
| 0 | 293 } |
| 294 | |
| 295 bool LazyClassPathEntry::is_jar_file() { | |
| 296 return ((_st.st_mode & S_IFREG) == S_IFREG); | |
| 297 } | |
| 298 | |
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299 ClassPathEntry* LazyClassPathEntry::resolve_entry(TRAPS) { |
| 0 | 300 if (_resolved_entry != NULL) { |
| 301 return (ClassPathEntry*) _resolved_entry; | |
| 302 } | |
| 303 ClassPathEntry* new_entry = NULL; | |
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304 new_entry = ClassLoader::create_class_path_entry(_path, &_st, false, CHECK_NULL); |
| 0 | 305 { |
| 306 ThreadCritical tc; | |
| 307 if (_resolved_entry == NULL) { | |
| 308 _resolved_entry = new_entry; | |
| 309 return new_entry; | |
| 310 } | |
| 311 } | |
| 312 assert(_resolved_entry != NULL, "bug in MT-safe resolution logic"); | |
| 313 delete new_entry; | |
| 314 return (ClassPathEntry*) _resolved_entry; | |
| 315 } | |
| 316 | |
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317 ClassFileStream* LazyClassPathEntry::open_stream(const char* name, TRAPS) { |
| 0 | 318 if (_meta_index != NULL && |
| 319 !_meta_index->may_contain(name)) { | |
| 320 return NULL; | |
| 321 } | |
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322 if (_has_error) { |
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323 return NULL; |
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324 } |
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325 ClassPathEntry* cpe = resolve_entry(THREAD); |
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326 if (cpe == NULL) { |
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327 _has_error = true; |
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328 return NULL; |
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329 } else { |
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330 return cpe->open_stream(name, THREAD); |
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331 } |
| 0 | 332 } |
| 333 | |
| 334 bool LazyClassPathEntry::is_lazy() { | |
| 335 return true; | |
| 336 } | |
| 337 | |
| 338 static void print_meta_index(LazyClassPathEntry* entry, | |
| 339 GrowableArray<char*>& meta_packages) { | |
| 340 tty->print("[Meta index for %s=", entry->name()); | |
| 341 for (int i = 0; i < meta_packages.length(); i++) { | |
| 342 if (i > 0) tty->print(" "); | |
| 343 tty->print(meta_packages.at(i)); | |
| 344 } | |
| 345 tty->print_cr("]"); | |
| 346 } | |
| 347 | |
| 348 | |
| 349 void ClassLoader::setup_meta_index() { | |
| 350 // Set up meta index which allows us to open boot jars lazily if | |
| 351 // class data sharing is enabled | |
| 352 const char* known_version = "% VERSION 2"; | |
| 353 char* meta_index_path = Arguments::get_meta_index_path(); | |
| 354 char* meta_index_dir = Arguments::get_meta_index_dir(); | |
| 355 FILE* file = fopen(meta_index_path, "r"); | |
| 356 int line_no = 0; | |
| 357 if (file != NULL) { | |
| 358 ResourceMark rm; | |
| 359 LazyClassPathEntry* cur_entry = NULL; | |
| 360 GrowableArray<char*> boot_class_path_packages(10); | |
| 361 char package_name[256]; | |
| 362 bool skipCurrentJar = false; | |
| 363 while (fgets(package_name, sizeof(package_name), file) != NULL) { | |
| 364 ++line_no; | |
| 365 // Remove trailing newline | |
| 366 package_name[strlen(package_name) - 1] = '\0'; | |
| 367 switch(package_name[0]) { | |
| 368 case '%': | |
| 369 { | |
| 370 if ((line_no == 1) && (strcmp(package_name, known_version) != 0)) { | |
| 371 if (TraceClassLoading && Verbose) { | |
| 372 tty->print("[Unsupported meta index version]"); | |
| 373 } | |
| 374 fclose(file); | |
| 375 return; | |
| 376 } | |
| 377 } | |
| 378 | |
| 379 // These directives indicate jar files which contain only | |
| 380 // classes, only non-classfile resources, or a combination of | |
| 381 // the two. See src/share/classes/sun/misc/MetaIndex.java and | |
| 382 // make/tools/MetaIndex/BuildMetaIndex.java in the J2SE | |
| 383 // workspace. | |
| 384 case '#': | |
| 385 case '!': | |
| 386 case '@': | |
| 387 { | |
| 388 // Hand off current packages to current lazy entry (if any) | |
| 389 if ((cur_entry != NULL) && | |
| 390 (boot_class_path_packages.length() > 0)) { | |
| 391 if (TraceClassLoading && Verbose) { | |
| 392 print_meta_index(cur_entry, boot_class_path_packages); | |
| 393 } | |
| 394 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
| 395 boot_class_path_packages.length()); | |
| 396 cur_entry->set_meta_index(index); | |
| 397 } | |
| 398 cur_entry = NULL; | |
| 399 boot_class_path_packages.clear(); | |
| 400 | |
| 401 // Find lazy entry corresponding to this jar file | |
| 402 for (ClassPathEntry* entry = _first_entry; entry != NULL; entry = entry->next()) { | |
| 403 if (entry->is_lazy() && | |
| 404 string_starts_with(entry->name(), meta_index_dir) && | |
| 405 string_ends_with(entry->name(), &package_name[2])) { | |
| 406 cur_entry = (LazyClassPathEntry*) entry; | |
| 407 break; | |
| 408 } | |
| 409 } | |
| 410 | |
| 411 // If the first character is '@', it indicates the following jar | |
| 412 // file is a resource only jar file in which case, we should skip | |
| 413 // reading the subsequent entries since the resource loading is | |
| 414 // totally handled by J2SE side. | |
| 415 if (package_name[0] == '@') { | |
| 416 if (cur_entry != NULL) { | |
| 417 cur_entry->set_meta_index(new MetaIndex(NULL, 0)); | |
| 418 } | |
| 419 cur_entry = NULL; | |
| 420 skipCurrentJar = true; | |
| 421 } else { | |
| 422 skipCurrentJar = false; | |
| 423 } | |
| 424 | |
| 425 break; | |
| 426 } | |
| 427 | |
| 428 default: | |
| 429 { | |
| 430 if (!skipCurrentJar && cur_entry != NULL) { | |
| 431 char* new_name = strdup(package_name); | |
| 432 boot_class_path_packages.append(new_name); | |
| 433 } | |
| 434 } | |
| 435 } | |
| 436 } | |
| 437 // Hand off current packages to current lazy entry (if any) | |
| 438 if ((cur_entry != NULL) && | |
| 439 (boot_class_path_packages.length() > 0)) { | |
| 440 if (TraceClassLoading && Verbose) { | |
| 441 print_meta_index(cur_entry, boot_class_path_packages); | |
| 442 } | |
| 443 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
| 444 boot_class_path_packages.length()); | |
| 445 cur_entry->set_meta_index(index); | |
| 446 } | |
| 447 fclose(file); | |
| 448 } | |
| 449 } | |
| 450 | |
| 451 void ClassLoader::setup_bootstrap_search_path() { | |
| 452 assert(_first_entry == NULL, "should not setup bootstrap class search path twice"); | |
| 453 char* sys_class_path = os::strdup(Arguments::get_sysclasspath()); | |
| 454 if (TraceClassLoading && Verbose) { | |
| 455 tty->print_cr("[Bootstrap loader class path=%s]", sys_class_path); | |
| 456 } | |
| 457 | |
| 458 int len = (int)strlen(sys_class_path); | |
| 459 int end = 0; | |
| 460 | |
| 461 // Iterate over class path entries | |
| 462 for (int start = 0; start < len; start = end) { | |
| 463 while (sys_class_path[end] && sys_class_path[end] != os::path_separator()[0]) { | |
| 464 end++; | |
| 465 } | |
| 6197 | 466 char* path = NEW_C_HEAP_ARRAY(char, end-start+1, mtClass); |
| 0 | 467 strncpy(path, &sys_class_path[start], end-start); |
| 468 path[end-start] = '\0'; | |
| 469 update_class_path_entry_list(path, false); | |
| 6197 | 470 FREE_C_HEAP_ARRAY(char, path, mtClass); |
| 0 | 471 while (sys_class_path[end] == os::path_separator()[0]) { |
| 472 end++; | |
| 473 } | |
| 474 } | |
| 475 } | |
| 476 | |
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477 ClassPathEntry* ClassLoader::create_class_path_entry(char *path, const struct stat* st, bool lazy, TRAPS) { |
| 0 | 478 JavaThread* thread = JavaThread::current(); |
| 479 if (lazy) { | |
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480 return new LazyClassPathEntry(path, st); |
| 0 | 481 } |
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482 ClassPathEntry* new_entry = NULL; |
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483 if ((st->st_mode & S_IFREG) == S_IFREG) { |
| 0 | 484 // Regular file, should be a zip file |
| 485 // Canonicalized filename | |
| 486 char canonical_path[JVM_MAXPATHLEN]; | |
| 487 if (!get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) { | |
| 488 // This matches the classic VM | |
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489 THROW_MSG_(vmSymbols::java_io_IOException(), "Bad pathname", NULL); |
| 0 | 490 } |
| 491 char* error_msg = NULL; | |
| 492 jzfile* zip; | |
| 493 { | |
| 494 // enable call to C land | |
| 495 ThreadToNativeFromVM ttn(thread); | |
| 496 HandleMark hm(thread); | |
| 497 zip = (*ZipOpen)(canonical_path, &error_msg); | |
| 498 } | |
| 499 if (zip != NULL && error_msg == NULL) { | |
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500 new_entry = new ClassPathZipEntry(zip, path); |
| 0 | 501 if (TraceClassLoading) { |
| 502 tty->print_cr("[Opened %s]", path); | |
| 503 } | |
| 504 } else { | |
| 505 ResourceMark rm(thread); | |
| 506 char *msg; | |
| 507 if (error_msg == NULL) { | |
| 508 msg = NEW_RESOURCE_ARRAY(char, strlen(path) + 128); ; | |
| 509 jio_snprintf(msg, strlen(path) + 127, "error in opening JAR file %s", path); | |
| 510 } else { | |
| 511 int len = (int)(strlen(path) + strlen(error_msg) + 128); | |
| 512 msg = NEW_RESOURCE_ARRAY(char, len); ; | |
| 513 jio_snprintf(msg, len - 1, "error in opening JAR file <%s> %s", error_msg, path); | |
| 514 } | |
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515 THROW_MSG_(vmSymbols::java_lang_ClassNotFoundException(), msg, NULL); |
| 0 | 516 } |
| 517 } else { | |
| 518 // Directory | |
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519 new_entry = new ClassPathDirEntry(path); |
| 0 | 520 if (TraceClassLoading) { |
| 521 tty->print_cr("[Path %s]", path); | |
| 522 } | |
| 523 } | |
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524 return new_entry; |
| 0 | 525 } |
| 526 | |
| 527 | |
| 528 // Create a class path zip entry for a given path (return NULL if not found | |
| 529 // or zip/JAR file cannot be opened) | |
| 530 ClassPathZipEntry* ClassLoader::create_class_path_zip_entry(const char *path) { | |
| 531 // check for a regular file | |
| 532 struct stat st; | |
| 533 if (os::stat(path, &st) == 0) { | |
| 534 if ((st.st_mode & S_IFREG) == S_IFREG) { | |
| 535 char orig_path[JVM_MAXPATHLEN]; | |
| 536 char canonical_path[JVM_MAXPATHLEN]; | |
| 537 | |
| 538 strcpy(orig_path, path); | |
| 539 if (get_canonical_path(orig_path, canonical_path, JVM_MAXPATHLEN)) { | |
| 540 char* error_msg = NULL; | |
| 541 jzfile* zip; | |
| 542 { | |
| 543 // enable call to C land | |
| 544 JavaThread* thread = JavaThread::current(); | |
| 545 ThreadToNativeFromVM ttn(thread); | |
| 546 HandleMark hm(thread); | |
| 547 zip = (*ZipOpen)(canonical_path, &error_msg); | |
| 548 } | |
| 549 if (zip != NULL && error_msg == NULL) { | |
| 550 // create using canonical path | |
| 551 return new ClassPathZipEntry(zip, canonical_path); | |
| 552 } | |
| 553 } | |
| 554 } | |
| 555 } | |
| 556 return NULL; | |
| 557 } | |
| 558 | |
| 559 // returns true if entry already on class path | |
| 560 bool ClassLoader::contains_entry(ClassPathEntry *entry) { | |
| 561 ClassPathEntry* e = _first_entry; | |
| 562 while (e != NULL) { | |
| 563 // assume zip entries have been canonicalized | |
| 564 if (strcmp(entry->name(), e->name()) == 0) { | |
| 565 return true; | |
| 566 } | |
| 567 e = e->next(); | |
| 568 } | |
| 569 return false; | |
| 570 } | |
| 571 | |
| 572 void ClassLoader::add_to_list(ClassPathEntry *new_entry) { | |
| 573 if (new_entry != NULL) { | |
| 574 if (_last_entry == NULL) { | |
| 575 _first_entry = _last_entry = new_entry; | |
| 576 } else { | |
| 577 _last_entry->set_next(new_entry); | |
| 578 _last_entry = new_entry; | |
| 579 } | |
| 580 } | |
| 581 } | |
| 582 | |
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583 void ClassLoader::update_class_path_entry_list(char *path, |
| 0 | 584 bool check_for_duplicates) { |
| 585 struct stat st; | |
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586 if (os::stat(path, &st) == 0) { |
| 0 | 587 // File or directory found |
| 588 ClassPathEntry* new_entry = NULL; | |
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589 Thread* THREAD = Thread::current(); |
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590 new_entry = create_class_path_entry(path, &st, LazyBootClassLoader, CHECK); |
| 0 | 591 // The kernel VM adds dynamically to the end of the classloader path and |
| 592 // doesn't reorder the bootclasspath which would break java.lang.Package | |
| 593 // (see PackageInfo). | |
| 594 // Add new entry to linked list | |
| 595 if (!check_for_duplicates || !contains_entry(new_entry)) { | |
| 596 add_to_list(new_entry); | |
| 597 } | |
| 598 } | |
| 599 } | |
| 600 | |
| 601 void ClassLoader::print_bootclasspath() { | |
| 602 ClassPathEntry* e = _first_entry; | |
| 603 tty->print("[bootclasspath= "); | |
| 604 while (e != NULL) { | |
| 605 tty->print("%s ;", e->name()); | |
| 606 e = e->next(); | |
| 607 } | |
| 608 tty->print_cr("]"); | |
| 609 } | |
| 610 | |
| 611 void ClassLoader::load_zip_library() { | |
| 612 assert(ZipOpen == NULL, "should not load zip library twice"); | |
| 613 // First make sure native library is loaded | |
| 614 os::native_java_library(); | |
| 615 // Load zip library | |
| 616 char path[JVM_MAXPATHLEN]; | |
| 617 char ebuf[1024]; | |
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618 void* handle = NULL; |
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619 if (os::dll_build_name(path, sizeof(path), Arguments::get_dll_dir(), "zip")) { |
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620 handle = os::dll_load(path, ebuf, sizeof ebuf); |
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621 } |
| 0 | 622 if (handle == NULL) { |
| 623 vm_exit_during_initialization("Unable to load ZIP library", path); | |
| 624 } | |
| 625 // Lookup zip entry points | |
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626 ZipOpen = CAST_TO_FN_PTR(ZipOpen_t, os::dll_lookup(handle, "ZIP_Open")); |
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627 ZipClose = CAST_TO_FN_PTR(ZipClose_t, os::dll_lookup(handle, "ZIP_Close")); |
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628 FindEntry = CAST_TO_FN_PTR(FindEntry_t, os::dll_lookup(handle, "ZIP_FindEntry")); |
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629 ReadEntry = CAST_TO_FN_PTR(ReadEntry_t, os::dll_lookup(handle, "ZIP_ReadEntry")); |
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630 ReadMappedEntry = CAST_TO_FN_PTR(ReadMappedEntry_t, os::dll_lookup(handle, "ZIP_ReadMappedEntry")); |
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631 GetNextEntry = CAST_TO_FN_PTR(GetNextEntry_t, os::dll_lookup(handle, "ZIP_GetNextEntry")); |
| 0 | 632 |
| 633 // ZIP_Close is not exported on Windows in JDK5.0 so don't abort if ZIP_Close is NULL | |
| 634 if (ZipOpen == NULL || FindEntry == NULL || ReadEntry == NULL || GetNextEntry == NULL) { | |
| 635 vm_exit_during_initialization("Corrupted ZIP library", path); | |
| 636 } | |
| 637 | |
| 638 // Lookup canonicalize entry in libjava.dll | |
| 639 void *javalib_handle = os::native_java_library(); | |
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640 CanonicalizeEntry = CAST_TO_FN_PTR(canonicalize_fn_t, os::dll_lookup(javalib_handle, "Canonicalize")); |
| 0 | 641 // This lookup only works on 1.3. Do not check for non-null here |
| 642 } | |
| 643 | |
| 644 // PackageInfo data exists in order to support the java.lang.Package | |
| 645 // class. A Package object provides information about a java package | |
| 646 // (version, vendor, etc.) which originates in the manifest of the jar | |
| 647 // file supplying the package. For application classes, the ClassLoader | |
| 648 // object takes care of this. | |
| 649 | |
| 650 // For system (boot) classes, the Java code in the Package class needs | |
| 651 // to be able to identify which source jar file contained the boot | |
| 652 // class, so that it can extract the manifest from it. This table | |
| 653 // identifies java packages with jar files in the boot classpath. | |
| 654 | |
| 655 // Because the boot classpath cannot change, the classpath index is | |
| 656 // sufficient to identify the source jar file or directory. (Since | |
| 657 // directories have no manifests, the directory name is not required, | |
| 658 // but is available.) | |
| 659 | |
| 660 // When using sharing -- the pathnames of entries in the boot classpath | |
| 661 // may not be the same at runtime as they were when the archive was | |
| 662 // created (NFS, Samba, etc.). The actual files and directories named | |
| 663 // in the classpath must be the same files, in the same order, even | |
| 664 // though the exact name is not the same. | |
| 665 | |
| 6197 | 666 class PackageInfo: public BasicHashtableEntry<mtClass> { |
| 0 | 667 public: |
| 668 const char* _pkgname; // Package name | |
| 669 int _classpath_index; // Index of directory or JAR file loaded from | |
| 670 | |
| 671 PackageInfo* next() { | |
| 6197 | 672 return (PackageInfo*)BasicHashtableEntry<mtClass>::next(); |
| 0 | 673 } |
| 674 | |
| 675 const char* pkgname() { return _pkgname; } | |
| 676 void set_pkgname(char* pkgname) { _pkgname = pkgname; } | |
| 677 | |
| 678 const char* filename() { | |
| 679 return ClassLoader::classpath_entry(_classpath_index)->name(); | |
| 680 } | |
| 681 | |
| 682 void set_index(int index) { | |
| 683 _classpath_index = index; | |
| 684 } | |
| 685 }; | |
| 686 | |
| 687 | |
| 6197 | 688 class PackageHashtable : public BasicHashtable<mtClass> { |
| 0 | 689 private: |
| 690 inline unsigned int compute_hash(const char *s, int n) { | |
| 691 unsigned int val = 0; | |
| 692 while (--n >= 0) { | |
| 693 val = *s++ + 31 * val; | |
| 694 } | |
| 695 return val; | |
| 696 } | |
| 697 | |
| 698 PackageInfo* bucket(int index) { | |
| 6197 | 699 return (PackageInfo*)BasicHashtable<mtClass>::bucket(index); |
| 0 | 700 } |
| 701 | |
| 702 PackageInfo* get_entry(int index, unsigned int hash, | |
| 703 const char* pkgname, size_t n) { | |
| 704 for (PackageInfo* pp = bucket(index); pp != NULL; pp = pp->next()) { | |
| 705 if (pp->hash() == hash && | |
| 706 strncmp(pkgname, pp->pkgname(), n) == 0 && | |
| 707 pp->pkgname()[n] == '\0') { | |
| 708 return pp; | |
| 709 } | |
| 710 } | |
| 711 return NULL; | |
| 712 } | |
| 713 | |
| 714 public: | |
| 715 PackageHashtable(int table_size) | |
| 6197 | 716 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo)) {} |
| 0 | 717 |
| 6197 | 718 PackageHashtable(int table_size, HashtableBucket<mtClass>* t, int number_of_entries) |
| 719 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo), t, number_of_entries) {} | |
| 0 | 720 |
| 721 PackageInfo* get_entry(const char* pkgname, int n) { | |
| 722 unsigned int hash = compute_hash(pkgname, n); | |
| 723 return get_entry(hash_to_index(hash), hash, pkgname, n); | |
| 724 } | |
| 725 | |
| 726 PackageInfo* new_entry(char* pkgname, int n) { | |
| 727 unsigned int hash = compute_hash(pkgname, n); | |
| 728 PackageInfo* pp; | |
| 6197 | 729 pp = (PackageInfo*)BasicHashtable<mtClass>::new_entry(hash); |
| 0 | 730 pp->set_pkgname(pkgname); |
| 731 return pp; | |
| 732 } | |
| 733 | |
| 734 void add_entry(PackageInfo* pp) { | |
| 735 int index = hash_to_index(pp->hash()); | |
| 6197 | 736 BasicHashtable<mtClass>::add_entry(index, pp); |
| 0 | 737 } |
| 738 | |
| 739 void copy_pkgnames(const char** packages) { | |
| 740 int n = 0; | |
| 741 for (int i = 0; i < table_size(); ++i) { | |
| 742 for (PackageInfo* pp = bucket(i); pp != NULL; pp = pp->next()) { | |
| 743 packages[n++] = pp->pkgname(); | |
| 744 } | |
| 745 } | |
| 746 assert(n == number_of_entries(), "just checking"); | |
| 747 } | |
| 748 | |
| 749 void copy_table(char** top, char* end, PackageHashtable* table); | |
| 750 }; | |
| 751 | |
| 752 | |
| 753 void PackageHashtable::copy_table(char** top, char* end, | |
| 754 PackageHashtable* table) { | |
| 755 // Copy (relocate) the table to the shared space. | |
| 6197 | 756 BasicHashtable<mtClass>::copy_table(top, end); |
| 0 | 757 |
| 758 // Calculate the space needed for the package name strings. | |
| 759 int i; | |
| 760 int n = 0; | |
| 761 for (i = 0; i < table_size(); ++i) { | |
| 762 for (PackageInfo* pp = table->bucket(i); | |
| 763 pp != NULL; | |
| 764 pp = pp->next()) { | |
| 765 n += (int)(strlen(pp->pkgname()) + 1); | |
| 766 } | |
| 767 } | |
| 768 if (*top + n + sizeof(intptr_t) >= end) { | |
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769 report_out_of_shared_space(SharedMiscData); |
| 0 | 770 } |
| 771 | |
| 772 // Copy the table data (the strings) to the shared space. | |
| 773 n = align_size_up(n, sizeof(HeapWord)); | |
| 774 *(intptr_t*)(*top) = n; | |
| 775 *top += sizeof(intptr_t); | |
| 776 | |
| 777 for (i = 0; i < table_size(); ++i) { | |
| 778 for (PackageInfo* pp = table->bucket(i); | |
| 779 pp != NULL; | |
| 780 pp = pp->next()) { | |
| 781 int n1 = (int)(strlen(pp->pkgname()) + 1); | |
| 782 pp->set_pkgname((char*)memcpy(*top, pp->pkgname(), n1)); | |
| 783 *top += n1; | |
| 784 } | |
| 785 } | |
| 786 *top = (char*)align_size_up((intptr_t)*top, sizeof(HeapWord)); | |
| 787 } | |
| 788 | |
| 789 | |
| 790 void ClassLoader::copy_package_info_buckets(char** top, char* end) { | |
| 791 _package_hash_table->copy_buckets(top, end); | |
| 792 } | |
| 793 | |
| 794 void ClassLoader::copy_package_info_table(char** top, char* end) { | |
| 795 _package_hash_table->copy_table(top, end, _package_hash_table); | |
| 796 } | |
| 797 | |
| 798 | |
| 799 PackageInfo* ClassLoader::lookup_package(const char *pkgname) { | |
| 800 const char *cp = strrchr(pkgname, '/'); | |
| 801 if (cp != NULL) { | |
| 802 // Package prefix found | |
| 803 int n = cp - pkgname + 1; | |
| 804 return _package_hash_table->get_entry(pkgname, n); | |
| 805 } | |
| 806 return NULL; | |
| 807 } | |
| 808 | |
| 809 | |
| 810 bool ClassLoader::add_package(const char *pkgname, int classpath_index, TRAPS) { | |
| 811 assert(pkgname != NULL, "just checking"); | |
| 812 // Bootstrap loader no longer holds system loader lock obj serializing | |
| 813 // load_instance_class and thereby add_package | |
| 814 { | |
| 815 MutexLocker ml(PackageTable_lock, THREAD); | |
| 816 // First check for previously loaded entry | |
| 817 PackageInfo* pp = lookup_package(pkgname); | |
| 818 if (pp != NULL) { | |
| 819 // Existing entry found, check source of package | |
| 820 pp->set_index(classpath_index); | |
| 821 return true; | |
| 822 } | |
| 823 | |
| 824 const char *cp = strrchr(pkgname, '/'); | |
| 825 if (cp != NULL) { | |
| 826 // Package prefix found | |
| 827 int n = cp - pkgname + 1; | |
| 828 | |
| 6197 | 829 char* new_pkgname = NEW_C_HEAP_ARRAY(char, n + 1, mtClass); |
| 0 | 830 if (new_pkgname == NULL) { |
| 831 return false; | |
| 832 } | |
| 833 | |
| 834 memcpy(new_pkgname, pkgname, n); | |
| 835 new_pkgname[n] = '\0'; | |
| 836 pp = _package_hash_table->new_entry(new_pkgname, n); | |
| 837 pp->set_index(classpath_index); | |
| 838 | |
| 839 // Insert into hash table | |
| 840 _package_hash_table->add_entry(pp); | |
| 841 } | |
| 842 return true; | |
| 843 } | |
| 844 } | |
| 845 | |
| 846 | |
| 847 oop ClassLoader::get_system_package(const char* name, TRAPS) { | |
| 848 PackageInfo* pp; | |
| 849 { | |
| 850 MutexLocker ml(PackageTable_lock, THREAD); | |
| 851 pp = lookup_package(name); | |
| 852 } | |
| 853 if (pp == NULL) { | |
| 854 return NULL; | |
| 855 } else { | |
| 856 Handle p = java_lang_String::create_from_str(pp->filename(), THREAD); | |
| 857 return p(); | |
| 858 } | |
| 859 } | |
| 860 | |
| 861 | |
| 862 objArrayOop ClassLoader::get_system_packages(TRAPS) { | |
| 863 ResourceMark rm(THREAD); | |
| 864 int nof_entries; | |
| 865 const char** packages; | |
| 866 { | |
| 867 MutexLocker ml(PackageTable_lock, THREAD); | |
| 868 // Allocate resource char* array containing package names | |
| 869 nof_entries = _package_hash_table->number_of_entries(); | |
| 870 if ((packages = NEW_RESOURCE_ARRAY(const char*, nof_entries)) == NULL) { | |
| 871 return NULL; | |
| 872 } | |
| 873 _package_hash_table->copy_pkgnames(packages); | |
| 874 } | |
| 875 // Allocate objArray and fill with java.lang.String | |
| 1142 | 876 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 877 nof_entries, CHECK_0); |
| 878 objArrayHandle result(THREAD, r); | |
| 879 for (int i = 0; i < nof_entries; i++) { | |
| 880 Handle str = java_lang_String::create_from_str(packages[i], CHECK_0); | |
| 881 result->obj_at_put(i, str()); | |
| 882 } | |
| 883 | |
| 884 return result(); | |
| 885 } | |
| 886 | |
| 887 | |
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888 instanceKlassHandle ClassLoader::load_classfile(Symbol* h_name, TRAPS) { |
| 0 | 889 ResourceMark rm(THREAD); |
| 12002 | 890 EventMark m("loading class %s", h_name->as_C_string()); |
| 0 | 891 ThreadProfilerMark tpm(ThreadProfilerMark::classLoaderRegion); |
| 892 | |
| 893 stringStream st; | |
| 894 // st.print() uses too much stack space while handling a StackOverflowError | |
| 895 // st.print("%s.class", h_name->as_utf8()); | |
| 896 st.print_raw(h_name->as_utf8()); | |
| 897 st.print_raw(".class"); | |
| 898 char* name = st.as_string(); | |
| 899 | |
| 900 // Lookup stream for parsing .class file | |
| 901 ClassFileStream* stream = NULL; | |
| 902 int classpath_index = 0; | |
| 903 { | |
|
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904 PerfClassTraceTime vmtimer(perf_sys_class_lookup_time(), |
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905 ((JavaThread*) THREAD)->get_thread_stat()->perf_timers_addr(), |
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906 PerfClassTraceTime::CLASS_LOAD); |
| 0 | 907 ClassPathEntry* e = _first_entry; |
| 908 while (e != NULL) { | |
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909 stream = e->open_stream(name, CHECK_NULL); |
| 0 | 910 if (stream != NULL) { |
| 911 break; | |
| 912 } | |
| 913 e = e->next(); | |
| 914 ++classpath_index; | |
| 915 } | |
| 916 } | |
| 917 | |
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918 instanceKlassHandle h; |
| 0 | 919 if (stream != NULL) { |
| 920 | |
| 921 // class file found, parse it | |
| 922 ClassFileParser parser(stream); | |
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923 ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data(); |
| 0 | 924 Handle protection_domain; |
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925 TempNewSymbol parsed_name = NULL; |
| 0 | 926 instanceKlassHandle result = parser.parseClassFile(h_name, |
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927 loader_data, |
| 0 | 928 protection_domain, |
| 929 parsed_name, | |
|
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930 false, |
| 0 | 931 CHECK_(h)); |
| 932 | |
| 933 // add to package table | |
| 934 if (add_package(name, classpath_index, THREAD)) { | |
| 935 h = result; | |
| 936 } | |
| 937 } | |
| 938 | |
| 939 return h; | |
| 940 } | |
| 941 | |
| 942 | |
| 6197 | 943 void ClassLoader::create_package_info_table(HashtableBucket<mtClass> *t, int length, |
| 0 | 944 int number_of_entries) { |
| 945 assert(_package_hash_table == NULL, "One package info table allowed."); | |
| 6197 | 946 assert(length == package_hash_table_size * sizeof(HashtableBucket<mtClass>), |
| 0 | 947 "bad shared package info size."); |
| 948 _package_hash_table = new PackageHashtable(package_hash_table_size, t, | |
| 949 number_of_entries); | |
| 950 } | |
| 951 | |
| 952 | |
| 953 void ClassLoader::create_package_info_table() { | |
| 954 assert(_package_hash_table == NULL, "shouldn't have one yet"); | |
| 955 _package_hash_table = new PackageHashtable(package_hash_table_size); | |
| 956 } | |
| 957 | |
| 958 | |
| 959 // Initialize the class loader's access to methods in libzip. Parse and | |
| 960 // process the boot classpath into a list ClassPathEntry objects. Once | |
| 961 // this list has been created, it must not change order (see class PackageInfo) | |
| 962 // it can be appended to and is by jvmti and the kernel vm. | |
| 963 | |
| 964 void ClassLoader::initialize() { | |
| 965 assert(_package_hash_table == NULL, "should have been initialized by now."); | |
| 966 EXCEPTION_MARK; | |
| 967 | |
| 968 if (UsePerfData) { | |
| 969 // jvmstat performance counters | |
| 970 NEWPERFTICKCOUNTER(_perf_accumulated_time, SUN_CLS, "time"); | |
| 971 NEWPERFTICKCOUNTER(_perf_class_init_time, SUN_CLS, "classInitTime"); | |
|
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972 NEWPERFTICKCOUNTER(_perf_class_init_selftime, SUN_CLS, "classInitTime.self"); |
| 0 | 973 NEWPERFTICKCOUNTER(_perf_class_verify_time, SUN_CLS, "classVerifyTime"); |
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974 NEWPERFTICKCOUNTER(_perf_class_verify_selftime, SUN_CLS, "classVerifyTime.self"); |
| 0 | 975 NEWPERFTICKCOUNTER(_perf_class_link_time, SUN_CLS, "classLinkedTime"); |
|
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976 NEWPERFTICKCOUNTER(_perf_class_link_selftime, SUN_CLS, "classLinkedTime.self"); |
| 0 | 977 NEWPERFEVENTCOUNTER(_perf_classes_inited, SUN_CLS, "initializedClasses"); |
| 978 NEWPERFEVENTCOUNTER(_perf_classes_linked, SUN_CLS, "linkedClasses"); | |
|
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979 NEWPERFEVENTCOUNTER(_perf_classes_verified, SUN_CLS, "verifiedClasses"); |
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980 |
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981 NEWPERFTICKCOUNTER(_perf_class_parse_time, SUN_CLS, "parseClassTime"); |
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982 NEWPERFTICKCOUNTER(_perf_class_parse_selftime, SUN_CLS, "parseClassTime.self"); |
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983 NEWPERFTICKCOUNTER(_perf_sys_class_lookup_time, SUN_CLS, "lookupSysClassTime"); |
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984 NEWPERFTICKCOUNTER(_perf_shared_classload_time, SUN_CLS, "sharedClassLoadTime"); |
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985 NEWPERFTICKCOUNTER(_perf_sys_classload_time, SUN_CLS, "sysClassLoadTime"); |
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986 NEWPERFTICKCOUNTER(_perf_app_classload_time, SUN_CLS, "appClassLoadTime"); |
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987 NEWPERFTICKCOUNTER(_perf_app_classload_selftime, SUN_CLS, "appClassLoadTime.self"); |
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988 NEWPERFEVENTCOUNTER(_perf_app_classload_count, SUN_CLS, "appClassLoadCount"); |
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989 NEWPERFTICKCOUNTER(_perf_define_appclasses, SUN_CLS, "defineAppClasses"); |
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990 NEWPERFTICKCOUNTER(_perf_define_appclass_time, SUN_CLS, "defineAppClassTime"); |
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991 NEWPERFTICKCOUNTER(_perf_define_appclass_selftime, SUN_CLS, "defineAppClassTime.self"); |
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992 NEWPERFBYTECOUNTER(_perf_app_classfile_bytes_read, SUN_CLS, "appClassBytes"); |
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993 NEWPERFBYTECOUNTER(_perf_sys_classfile_bytes_read, SUN_CLS, "sysClassBytes"); |
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994 |
| 0 | 995 |
| 996 // The following performance counters are added for measuring the impact | |
| 997 // of the bug fix of 6365597. They are mainly focused on finding out | |
| 998 // the behavior of system & user-defined classloader lock, whether | |
| 999 // ClassLoader.loadClass/findClass is being called synchronized or not. | |
| 1000 // Also two additional counters are created to see whether 'UnsyncloadClass' | |
| 1001 // flag is being set or not and how many times load_instance_class call | |
| 1002 // fails with linkageError etc. | |
| 1003 NEWPERFEVENTCOUNTER(_sync_systemLoaderLockContentionRate, SUN_CLS, | |
| 1004 "systemLoaderLockContentionRate"); | |
| 1005 NEWPERFEVENTCOUNTER(_sync_nonSystemLoaderLockContentionRate, SUN_CLS, | |
| 1006 "nonSystemLoaderLockContentionRate"); | |
| 1007 NEWPERFEVENTCOUNTER(_sync_JVMFindLoadedClassLockFreeCounter, SUN_CLS, | |
| 1008 "jvmFindLoadedClassNoLockCalls"); | |
| 1009 NEWPERFEVENTCOUNTER(_sync_JVMDefineClassLockFreeCounter, SUN_CLS, | |
| 1010 "jvmDefineClassNoLockCalls"); | |
| 1011 | |
| 1012 NEWPERFEVENTCOUNTER(_sync_JNIDefineClassLockFreeCounter, SUN_CLS, | |
| 1013 "jniDefineClassNoLockCalls"); | |
| 1014 | |
| 1015 NEWPERFEVENTCOUNTER(_unsafe_defineClassCallCounter, SUN_CLS, | |
| 1016 "unsafeDefineClassCalls"); | |
| 1017 | |
| 1018 NEWPERFEVENTCOUNTER(_isUnsyncloadClass, SUN_CLS, "isUnsyncloadClassSet"); | |
| 1019 NEWPERFEVENTCOUNTER(_load_instance_class_failCounter, SUN_CLS, | |
| 1020 "loadInstanceClassFailRate"); | |
| 1021 | |
| 1022 // increment the isUnsyncloadClass counter if UnsyncloadClass is set. | |
| 1023 if (UnsyncloadClass) { | |
| 1024 _isUnsyncloadClass->inc(); | |
| 1025 } | |
| 1026 } | |
| 1027 | |
| 1028 // lookup zip library entry points | |
| 1029 load_zip_library(); | |
| 1030 // initialize search path | |
| 1031 setup_bootstrap_search_path(); | |
| 1032 if (LazyBootClassLoader) { | |
| 1033 // set up meta index which makes boot classpath initialization lazier | |
| 1034 setup_meta_index(); | |
| 1035 } | |
| 1036 } | |
| 1037 | |
| 1038 | |
| 1039 jlong ClassLoader::classloader_time_ms() { | |
| 1040 return UsePerfData ? | |
| 1041 Management::ticks_to_ms(_perf_accumulated_time->get_value()) : -1; | |
| 1042 } | |
| 1043 | |
| 1044 jlong ClassLoader::class_init_count() { | |
| 1045 return UsePerfData ? _perf_classes_inited->get_value() : -1; | |
| 1046 } | |
| 1047 | |
| 1048 jlong ClassLoader::class_init_time_ms() { | |
| 1049 return UsePerfData ? | |
| 1050 Management::ticks_to_ms(_perf_class_init_time->get_value()) : -1; | |
| 1051 } | |
| 1052 | |
| 1053 jlong ClassLoader::class_verify_time_ms() { | |
| 1054 return UsePerfData ? | |
| 1055 Management::ticks_to_ms(_perf_class_verify_time->get_value()) : -1; | |
| 1056 } | |
| 1057 | |
| 1058 jlong ClassLoader::class_link_count() { | |
| 1059 return UsePerfData ? _perf_classes_linked->get_value() : -1; | |
| 1060 } | |
| 1061 | |
| 1062 jlong ClassLoader::class_link_time_ms() { | |
| 1063 return UsePerfData ? | |
| 1064 Management::ticks_to_ms(_perf_class_link_time->get_value()) : -1; | |
| 1065 } | |
| 1066 | |
| 1067 int ClassLoader::compute_Object_vtable() { | |
| 1068 // hardwired for JDK1.2 -- would need to duplicate class file parsing | |
| 1069 // code to determine actual value from file | |
| 1070 // Would be value '11' if finals were in vtable | |
| 1071 int JDK_1_2_Object_vtable_size = 5; | |
| 1072 return JDK_1_2_Object_vtable_size * vtableEntry::size(); | |
| 1073 } | |
| 1074 | |
| 1075 | |
| 1076 void classLoader_init() { | |
| 1077 ClassLoader::initialize(); | |
| 1078 } | |
| 1079 | |
| 1080 | |
| 1081 bool ClassLoader::get_canonical_path(char* orig, char* out, int len) { | |
| 1082 assert(orig != NULL && out != NULL && len > 0, "bad arguments"); | |
| 1083 if (CanonicalizeEntry != NULL) { | |
| 1084 JNIEnv* env = JavaThread::current()->jni_environment(); | |
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1085 if ((CanonicalizeEntry)(env, os::native_path(orig), out, len) < 0) { |
| 0 | 1086 return false; |
| 1087 } | |
| 1088 } else { | |
| 1089 // On JDK 1.2.2 the Canonicalize does not exist, so just do nothing | |
| 1090 strncpy(out, orig, len); | |
| 1091 out[len - 1] = '\0'; | |
| 1092 } | |
| 1093 return true; | |
| 1094 } | |
| 1095 | |
| 1096 #ifndef PRODUCT | |
| 1097 | |
| 1098 void ClassLoader::verify() { | |
| 1099 _package_hash_table->verify(); | |
| 1100 } | |
| 1101 | |
| 1102 | |
| 1103 // CompileTheWorld | |
| 1104 // | |
| 1105 // Iterates over all class path entries and forces compilation of all methods | |
| 1106 // in all classes found. Currently, only zip/jar archives are searched. | |
| 1107 // | |
| 1108 // The classes are loaded by the Java level bootstrap class loader, and the | |
| 1109 // initializer is called. If DelayCompilationDuringStartup is true (default), | |
| 1110 // the interpreter will run the initialization code. Note that forcing | |
| 1111 // initialization in this way could potentially lead to initialization order | |
| 1112 // problems, in which case we could just force the initialization bit to be set. | |
| 1113 | |
| 1114 | |
| 1115 // We need to iterate over the contents of a zip/jar file, so we replicate the | |
| 1116 // jzcell and jzfile definitions from zip_util.h but rename jzfile to real_jzfile, | |
| 1117 // since jzfile already has a void* definition. | |
| 1118 // | |
| 1119 // Note that this is only used in debug mode. | |
| 1120 // | |
| 1121 // HotSpot integration note: | |
| 1122 // Matches zip_util.h 1.14 99/06/01 from jdk1.3 beta H build | |
| 1123 | |
| 1124 | |
| 1125 // JDK 1.3 version | |
| 1126 typedef struct real_jzentry13 { /* Zip file entry */ | |
| 1127 char *name; /* entry name */ | |
| 1128 jint time; /* modification time */ | |
| 1129 jint size; /* size of uncompressed data */ | |
| 1130 jint csize; /* size of compressed data (zero if uncompressed) */ | |
| 1131 jint crc; /* crc of uncompressed data */ | |
| 1132 char *comment; /* optional zip file comment */ | |
| 1133 jbyte *extra; /* optional extra data */ | |
| 1134 jint pos; /* position of LOC header (if negative) or data */ | |
| 1135 } real_jzentry13; | |
| 1136 | |
| 1137 typedef struct real_jzfile13 { /* Zip file */ | |
| 1138 char *name; /* zip file name */ | |
| 1139 jint refs; /* number of active references */ | |
| 1140 jint fd; /* open file descriptor */ | |
| 1141 void *lock; /* read lock */ | |
| 1142 char *comment; /* zip file comment */ | |
| 1143 char *msg; /* zip error message */ | |
| 1144 void *entries; /* array of hash cells */ | |
| 1145 jint total; /* total number of entries */ | |
| 1146 unsigned short *table; /* Hash chain heads: indexes into entries */ | |
| 1147 jint tablelen; /* number of hash eads */ | |
| 1148 real_jzfile13 *next; /* next zip file in search list */ | |
| 1149 jzentry *cache; /* we cache the most recently freed jzentry */ | |
| 1150 /* Information on metadata names in META-INF directory */ | |
| 1151 char **metanames; /* array of meta names (may have null names) */ | |
| 1152 jint metacount; /* number of slots in metanames array */ | |
| 1153 /* If there are any per-entry comments, they are in the comments array */ | |
| 1154 char **comments; | |
| 1155 } real_jzfile13; | |
| 1156 | |
| 1157 // JDK 1.2 version | |
| 1158 typedef struct real_jzentry12 { /* Zip file entry */ | |
| 1159 char *name; /* entry name */ | |
| 1160 jint time; /* modification time */ | |
| 1161 jint size; /* size of uncompressed data */ | |
| 1162 jint csize; /* size of compressed data (zero if uncompressed) */ | |
| 1163 jint crc; /* crc of uncompressed data */ | |
| 1164 char *comment; /* optional zip file comment */ | |
| 1165 jbyte *extra; /* optional extra data */ | |
| 1166 jint pos; /* position of LOC header (if negative) or data */ | |
| 1167 struct real_jzentry12 *next; /* next entry in hash table */ | |
| 1168 } real_jzentry12; | |
| 1169 | |
| 1170 typedef struct real_jzfile12 { /* Zip file */ | |
| 1171 char *name; /* zip file name */ | |
| 1172 jint refs; /* number of active references */ | |
| 1173 jint fd; /* open file descriptor */ | |
| 1174 void *lock; /* read lock */ | |
| 1175 char *comment; /* zip file comment */ | |
| 1176 char *msg; /* zip error message */ | |
| 1177 real_jzentry12 *entries; /* array of zip entries */ | |
| 1178 jint total; /* total number of entries */ | |
| 1179 real_jzentry12 **table; /* hash table of entries */ | |
| 1180 jint tablelen; /* number of buckets */ | |
| 1181 jzfile *next; /* next zip file in search list */ | |
| 1182 } real_jzfile12; | |
| 1183 | |
| 1184 | |
| 1185 void ClassPathDirEntry::compile_the_world(Handle loader, TRAPS) { | |
| 1186 // For now we only compile all methods in all classes in zip/jar files | |
| 1187 tty->print_cr("CompileTheWorld : Skipped classes in %s", _dir); | |
| 1188 tty->cr(); | |
| 1189 } | |
| 1190 | |
| 1191 | |
| 1192 bool ClassPathDirEntry::is_rt_jar() { | |
| 1193 return false; | |
| 1194 } | |
| 1195 | |
| 1196 void ClassPathZipEntry::compile_the_world(Handle loader, TRAPS) { | |
| 1197 if (JDK_Version::is_jdk12x_version()) { | |
| 1198 compile_the_world12(loader, THREAD); | |
| 1199 } else { | |
| 1200 compile_the_world13(loader, THREAD); | |
| 1201 } | |
| 1202 if (HAS_PENDING_EXCEPTION) { | |
| 1203 if (PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
| 1204 CLEAR_PENDING_EXCEPTION; | |
| 1205 tty->print_cr("\nCompileTheWorld : Ran out of memory\n"); | |
|
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1206 tty->print_cr("Increase class metadata storage if a limit was set"); |
| 0 | 1207 } else { |
| 1208 tty->print_cr("\nCompileTheWorld : Unexpected exception occurred\n"); | |
| 1209 } | |
| 1210 } | |
| 1211 } | |
| 1212 | |
| 1213 // Version that works for JDK 1.3.x | |
| 1214 void ClassPathZipEntry::compile_the_world13(Handle loader, TRAPS) { | |
| 1215 real_jzfile13* zip = (real_jzfile13*) _zip; | |
| 1216 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
| 1217 tty->cr(); | |
| 1218 // Iterate over all entries in zip file | |
| 1219 for (int n = 0; ; n++) { | |
| 1220 real_jzentry13 * ze = (real_jzentry13 *)((*GetNextEntry)(_zip, n)); | |
| 1221 if (ze == NULL) break; | |
| 1222 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
| 1223 } | |
| 1224 } | |
| 1225 | |
| 1226 | |
| 1227 // Version that works for JDK 1.2.x | |
| 1228 void ClassPathZipEntry::compile_the_world12(Handle loader, TRAPS) { | |
| 1229 real_jzfile12* zip = (real_jzfile12*) _zip; | |
| 1230 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
| 1231 tty->cr(); | |
| 1232 // Iterate over all entries in zip file | |
| 1233 for (int n = 0; ; n++) { | |
| 1234 real_jzentry12 * ze = (real_jzentry12 *)((*GetNextEntry)(_zip, n)); | |
| 1235 if (ze == NULL) break; | |
| 1236 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
| 1237 } | |
| 1238 } | |
| 1239 | |
| 1240 bool ClassPathZipEntry::is_rt_jar() { | |
| 1241 if (JDK_Version::is_jdk12x_version()) { | |
| 1242 return is_rt_jar12(); | |
| 1243 } else { | |
| 1244 return is_rt_jar13(); | |
| 1245 } | |
| 1246 } | |
| 1247 | |
| 1248 // JDK 1.3 version | |
| 1249 bool ClassPathZipEntry::is_rt_jar13() { | |
| 1250 real_jzfile13* zip = (real_jzfile13*) _zip; | |
| 1251 int len = (int)strlen(zip->name); | |
| 1252 // Check whether zip name ends in "rt.jar" | |
| 1253 // This will match other archives named rt.jar as well, but this is | |
| 1254 // only used for debugging. | |
| 1255 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
| 1256 } | |
| 1257 | |
| 1258 // JDK 1.2 version | |
| 1259 bool ClassPathZipEntry::is_rt_jar12() { | |
| 1260 real_jzfile12* zip = (real_jzfile12*) _zip; | |
| 1261 int len = (int)strlen(zip->name); | |
| 1262 // Check whether zip name ends in "rt.jar" | |
| 1263 // This will match other archives named rt.jar as well, but this is | |
| 1264 // only used for debugging. | |
| 1265 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
| 1266 } | |
| 1267 | |
| 1268 void LazyClassPathEntry::compile_the_world(Handle loader, TRAPS) { | |
|
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1269 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1270 if (cpe != NULL) { |
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1271 cpe->compile_the_world(loader, CHECK); |
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1272 } |
| 0 | 1273 } |
| 1274 | |
| 1275 bool LazyClassPathEntry::is_rt_jar() { | |
|
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1276 Thread* THREAD = Thread::current(); |
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1277 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1278 return (cpe != NULL) ? cpe->is_jar_file() : false; |
| 0 | 1279 } |
| 1280 | |
| 1281 void ClassLoader::compile_the_world() { | |
| 1282 EXCEPTION_MARK; | |
| 1283 HandleMark hm(THREAD); | |
| 1284 ResourceMark rm(THREAD); | |
| 1285 // Make sure we don't run with background compilation | |
| 1286 BackgroundCompilation = false; | |
| 1287 // Find bootstrap loader | |
| 1288 Handle system_class_loader (THREAD, SystemDictionary::java_system_loader()); | |
| 1289 // Iterate over all bootstrap class path entries | |
| 1290 ClassPathEntry* e = _first_entry; | |
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1291 jlong start = os::javaTimeMillis(); |
| 0 | 1292 while (e != NULL) { |
| 1293 // We stop at rt.jar, unless it is the first bootstrap path entry | |
| 1294 if (e->is_rt_jar() && e != _first_entry) break; | |
| 1295 e->compile_the_world(system_class_loader, CATCH); | |
| 1296 e = e->next(); | |
| 1297 } | |
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1298 jlong end = os::javaTimeMillis(); |
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1299 tty->print_cr("CompileTheWorld : Done (%d classes, %d methods, %d ms)", |
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1300 _compile_the_world_class_counter, _compile_the_world_method_counter, (end - start)); |
| 0 | 1301 { |
| 1302 // Print statistics as if before normal exit: | |
| 1303 extern void print_statistics(); | |
| 1304 print_statistics(); | |
| 1305 } | |
| 1306 vm_exit(0); | |
| 1307 } | |
| 1308 | |
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1309 int ClassLoader::_compile_the_world_class_counter = 0; |
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1310 int ClassLoader::_compile_the_world_method_counter = 0; |
|
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1311 static int _codecache_sweep_counter = 0; |
| 0 | 1312 |
| 2257 | 1313 // Filter out all exceptions except OOMs |
| 1314 static void clear_pending_exception_if_not_oom(TRAPS) { | |
| 1315 if (HAS_PENDING_EXCEPTION && | |
| 1316 !PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
| 1317 CLEAR_PENDING_EXCEPTION; | |
| 1318 } | |
| 1319 // The CHECK at the caller will propagate the exception out | |
| 1320 } | |
| 1321 | |
|
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1322 /** |
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1323 * Returns if the given method should be compiled when doing compile-the-world. |
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1324 * |
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1325 * TODO: This should be a private method in a CompileTheWorld class. |
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1326 */ |
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1327 static bool can_be_compiled(methodHandle m, int comp_level) { |
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1328 assert(CompileTheWorld, "must be"); |
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1329 |
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1330 // It's not valid to compile a native wrapper for MethodHandle methods |
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1331 // that take a MemberName appendix since the bytecode signature is not |
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1332 // correct. |
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1333 vmIntrinsics::ID iid = m->intrinsic_id(); |
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1334 if (MethodHandles::is_signature_polymorphic(iid) && MethodHandles::has_member_arg(iid)) { |
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1335 return false; |
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1336 } |
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1337 |
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1338 return CompilationPolicy::can_be_compiled(m, comp_level); |
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1339 } |
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1340 |
| 0 | 1341 void ClassLoader::compile_the_world_in(char* name, Handle loader, TRAPS) { |
| 1342 int len = (int)strlen(name); | |
| 1343 if (len > 6 && strcmp(".class", name + len - 6) == 0) { | |
| 1344 // We have a .class file | |
| 1345 char buffer[2048]; | |
| 1346 strncpy(buffer, name, len - 6); | |
| 1347 buffer[len-6] = 0; | |
| 1348 // If the file has a period after removing .class, it's not really a | |
| 1349 // valid class file. The class loader will check everything else. | |
| 1350 if (strchr(buffer, '.') == NULL) { | |
|
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1351 _compile_the_world_class_counter++; |
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1352 if (_compile_the_world_class_counter > CompileTheWorldStopAt) return; |
| 723 | 1353 |
| 1354 // Construct name without extension | |
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1355 TempNewSymbol sym = SymbolTable::new_symbol(buffer, CHECK); |
| 723 | 1356 // Use loader to load and initialize class |
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1357 Klass* ik = SystemDictionary::resolve_or_null(sym, loader, Handle(), THREAD); |
| 723 | 1358 instanceKlassHandle k (THREAD, ik); |
| 1359 if (k.not_null() && !HAS_PENDING_EXCEPTION) { | |
| 1360 k->initialize(THREAD); | |
| 1361 } | |
| 1362 bool exception_occurred = HAS_PENDING_EXCEPTION; | |
| 2257 | 1363 clear_pending_exception_if_not_oom(CHECK); |
| 723 | 1364 if (CompileTheWorldPreloadClasses && k.not_null()) { |
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1365 ConstantPool::preload_and_initialize_all_classes(k->constants(), THREAD); |
| 723 | 1366 if (HAS_PENDING_EXCEPTION) { |
| 1367 // If something went wrong in preloading we just ignore it | |
| 2257 | 1368 clear_pending_exception_if_not_oom(CHECK); |
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1369 tty->print_cr("Preloading failed for (%d) %s", _compile_the_world_class_counter, buffer); |
| 0 | 1370 } |
| 723 | 1371 } |
| 1372 | |
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1373 if (_compile_the_world_class_counter >= CompileTheWorldStartAt) { |
|
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1374 if (k.is_null() || exception_occurred) { |
| 0 | 1375 // If something went wrong (e.g. ExceptionInInitializerError) we skip this class |
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1376 tty->print_cr("CompileTheWorld (%d) : Skipping %s", _compile_the_world_class_counter, buffer); |
| 0 | 1377 } else { |
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1378 tty->print_cr("CompileTheWorld (%d) : %s", _compile_the_world_class_counter, buffer); |
| 0 | 1379 // Preload all classes to get around uncommon traps |
| 1380 // Iterate over all methods in class | |
|
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1381 int comp_level = CompilationPolicy::policy()->initial_compile_level(); |
| 0 | 1382 for (int n = 0; n < k->methods()->length(); n++) { |
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1383 methodHandle m (THREAD, k->methods()->at(n)); |
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1384 if (can_be_compiled(m, comp_level)) { |
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1385 if (++_codecache_sweep_counter == CompileTheWorldSafepointInterval) { |
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1386 // Give sweeper a chance to keep up with CTW |
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1387 VM_ForceSafepoint op; |
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1388 VMThread::execute(&op); |
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1389 _codecache_sweep_counter = 0; |
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1390 } |
| 0 | 1391 // Force compilation |
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1392 CompileBroker::compile_method(m, InvocationEntryBci, comp_level, |
| 0 | 1393 methodHandle(), 0, "CTW", THREAD); |
| 1394 if (HAS_PENDING_EXCEPTION) { | |
| 2257 | 1395 clear_pending_exception_if_not_oom(CHECK); |
|
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1396 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
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1397 } else { |
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1398 _compile_the_world_method_counter++; |
| 0 | 1399 } |
|
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1400 if (TieredCompilation && TieredStopAtLevel >= CompLevel_full_optimization) { |
| 723 | 1401 // Clobber the first compile and force second tier compilation |
| 1402 nmethod* nm = m->code(); | |
| 1403 if (nm != NULL) { | |
| 1404 // Throw out the code so that the code cache doesn't fill up | |
| 1405 nm->make_not_entrant(); | |
| 1406 m->clear_code(); | |
| 1407 } | |
| 1783 | 1408 CompileBroker::compile_method(m, InvocationEntryBci, CompLevel_full_optimization, |
| 723 | 1409 methodHandle(), 0, "CTW", THREAD); |
| 1410 if (HAS_PENDING_EXCEPTION) { | |
| 2257 | 1411 clear_pending_exception_if_not_oom(CHECK); |
|
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1412 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
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8011933: add number of classes, methods and time spent to CompileTheWorld
twisti
parents:
7185
diff
changeset
|
1413 } else { |
|
b8b081e53312
8011933: add number of classes, methods and time spent to CompileTheWorld
twisti
parents:
7185
diff
changeset
|
1414 _compile_the_world_method_counter++; |
| 723 | 1415 } |
| 0 | 1416 } |
|
12255
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
twisti
parents:
12135
diff
changeset
|
1417 } else { |
|
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
twisti
parents:
12135
diff
changeset
|
1418 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
| 0 | 1419 } |
| 723 | 1420 |
| 1421 nmethod* nm = m->code(); | |
| 1422 if (nm != NULL) { | |
| 1423 // Throw out the code so that the code cache doesn't fill up | |
| 1424 nm->make_not_entrant(); | |
| 1425 m->clear_code(); | |
| 0 | 1426 } |
| 1427 } | |
| 1428 } | |
| 1429 } | |
| 1430 } | |
| 1431 } | |
| 1432 } | |
| 1433 | |
| 1434 #endif //PRODUCT | |
|
2139
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1435 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1436 // Please keep following two functions at end of this file. With them placed at top or in middle of the file, |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1437 // they could get inlined by agressive compiler, an unknown trick, see bug 6966589. |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1438 void PerfClassTraceTime::initialize() { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1439 if (!UsePerfData) return; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1440 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1441 if (_eventp != NULL) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1442 // increment the event counter |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1443 _eventp->inc(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1444 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1445 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1446 // stop the current active thread-local timer to measure inclusive time |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1447 _prev_active_event = -1; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1448 for (int i=0; i < EVENT_TYPE_COUNT; i++) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1449 if (_timers[i].is_active()) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1450 assert(_prev_active_event == -1, "should have only one active timer"); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1451 _prev_active_event = i; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1452 _timers[i].stop(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1453 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1454 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1455 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1456 if (_recursion_counters == NULL || (_recursion_counters[_event_type])++ == 0) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1457 // start the inclusive timer if not recursively called |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1458 _t.start(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1459 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1460 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1461 // start thread-local timer of the given event type |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1462 if (!_timers[_event_type].is_active()) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1463 _timers[_event_type].start(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1464 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1465 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1466 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1467 PerfClassTraceTime::~PerfClassTraceTime() { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1468 if (!UsePerfData) return; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1469 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1470 // stop the thread-local timer as the event completes |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1471 // and resume the thread-local timer of the event next on the stack |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1472 _timers[_event_type].stop(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1473 jlong selftime = _timers[_event_type].ticks(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1474 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1475 if (_prev_active_event >= 0) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1476 _timers[_prev_active_event].start(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1477 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1478 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1479 if (_recursion_counters != NULL && --(_recursion_counters[_event_type]) > 0) return; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1480 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1481 // increment the counters only on the leaf call |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1482 _t.stop(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1483 _timep->inc(_t.ticks()); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1484 if (_selftimep != NULL) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1485 _selftimep->inc(selftime); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1486 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1487 // add all class loading related event selftime to the accumulated time counter |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1488 ClassLoader::perf_accumulated_time()->inc(selftime); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1489 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1490 // reset the timer |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1491 _timers[_event_type].reset(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1492 } |