Mercurial > hg > truffle
annotate src/share/vm/classfile/classLoader.cpp @ 20433:2e6106d44079
8057750: CTW should not make MH intrinsics not entrant
Summary: Do not make MH intrinsics not entrant in CTW
Reviewed-by: kvn, vlivanov
| author | iveresov |
|---|---|
| date | Mon, 08 Sep 2014 11:45:48 -0700 |
| parents | bb239308be67 |
| children | f0bedf980c65 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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/classLoaderExt.hpp" |
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30 #include "classfile/classLoaderData.inline.hpp" |
| 1972 | 31 #include "classfile/javaClasses.hpp" |
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32 #if INCLUDE_CDS |
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33 #include "classfile/sharedPathsMiscInfo.hpp" |
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34 #include "classfile/sharedClassUtil.hpp" |
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35 #endif |
| 1972 | 36 #include "classfile/systemDictionary.hpp" |
| 37 #include "classfile/vmSymbols.hpp" | |
| 38 #include "compiler/compileBroker.hpp" | |
| 39 #include "gc_interface/collectedHeap.inline.hpp" | |
| 40 #include "interpreter/bytecodeStream.hpp" | |
| 41 #include "interpreter/oopMapCache.hpp" | |
| 42 #include "memory/allocation.inline.hpp" | |
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43 #include "memory/filemap.hpp" |
| 1972 | 44 #include "memory/generation.hpp" |
| 45 #include "memory/oopFactory.hpp" | |
| 46 #include "memory/universe.inline.hpp" | |
| 47 #include "oops/instanceKlass.hpp" | |
| 48 #include "oops/instanceRefKlass.hpp" | |
| 49 #include "oops/oop.inline.hpp" | |
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50 #include "oops/symbol.hpp" |
| 1972 | 51 #include "prims/jvm_misc.hpp" |
| 52 #include "runtime/arguments.hpp" | |
| 53 #include "runtime/compilationPolicy.hpp" | |
| 54 #include "runtime/fprofiler.hpp" | |
| 55 #include "runtime/handles.hpp" | |
| 56 #include "runtime/handles.inline.hpp" | |
| 57 #include "runtime/init.hpp" | |
| 58 #include "runtime/interfaceSupport.hpp" | |
| 59 #include "runtime/java.hpp" | |
| 60 #include "runtime/javaCalls.hpp" | |
| 61 #include "runtime/threadCritical.hpp" | |
| 62 #include "runtime/timer.hpp" | |
| 63 #include "services/management.hpp" | |
| 64 #include "services/threadService.hpp" | |
| 65 #include "utilities/events.hpp" | |
| 66 #include "utilities/hashtable.hpp" | |
| 67 #include "utilities/hashtable.inline.hpp" | |
| 68 #ifdef TARGET_OS_FAMILY_linux | |
| 69 # include "os_linux.inline.hpp" | |
| 70 #endif | |
| 71 #ifdef TARGET_OS_FAMILY_solaris | |
| 72 # include "os_solaris.inline.hpp" | |
| 73 #endif | |
| 74 #ifdef TARGET_OS_FAMILY_windows | |
| 75 # include "os_windows.inline.hpp" | |
| 76 #endif | |
| 14411 | 77 #ifdef TARGET_OS_FAMILY_aix |
| 78 # include "os_aix.inline.hpp" | |
| 79 #endif | |
| 3960 | 80 #ifdef TARGET_OS_FAMILY_bsd |
| 81 # include "os_bsd.inline.hpp" | |
| 82 #endif | |
| 0 | 83 |
| 84 | |
| 85 // Entry points in zip.dll for loading zip/jar file entries | |
| 86 | |
| 87 typedef void * * (JNICALL *ZipOpen_t)(const char *name, char **pmsg); | |
| 88 typedef void (JNICALL *ZipClose_t)(jzfile *zip); | |
| 89 typedef jzentry* (JNICALL *FindEntry_t)(jzfile *zip, const char *name, jint *sizeP, jint *nameLen); | |
| 90 typedef jboolean (JNICALL *ReadEntry_t)(jzfile *zip, jzentry *entry, unsigned char *buf, char *namebuf); | |
| 91 typedef jboolean (JNICALL *ReadMappedEntry_t)(jzfile *zip, jzentry *entry, unsigned char **buf, char *namebuf); | |
| 92 typedef jzentry* (JNICALL *GetNextEntry_t)(jzfile *zip, jint n); | |
| 93 | |
| 94 static ZipOpen_t ZipOpen = NULL; | |
| 95 static ZipClose_t ZipClose = NULL; | |
| 96 static FindEntry_t FindEntry = NULL; | |
| 97 static ReadEntry_t ReadEntry = NULL; | |
| 98 static ReadMappedEntry_t ReadMappedEntry = NULL; | |
| 99 static GetNextEntry_t GetNextEntry = NULL; | |
| 100 static canonicalize_fn_t CanonicalizeEntry = NULL; | |
| 101 | |
| 102 // Globals | |
| 103 | |
| 104 PerfCounter* ClassLoader::_perf_accumulated_time = NULL; | |
| 105 PerfCounter* ClassLoader::_perf_classes_inited = NULL; | |
| 106 PerfCounter* ClassLoader::_perf_class_init_time = NULL; | |
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107 PerfCounter* ClassLoader::_perf_class_init_selftime = NULL; |
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108 PerfCounter* ClassLoader::_perf_classes_verified = NULL; |
| 0 | 109 PerfCounter* ClassLoader::_perf_class_verify_time = NULL; |
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110 PerfCounter* ClassLoader::_perf_class_verify_selftime = NULL; |
| 0 | 111 PerfCounter* ClassLoader::_perf_classes_linked = NULL; |
| 112 PerfCounter* ClassLoader::_perf_class_link_time = NULL; | |
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113 PerfCounter* ClassLoader::_perf_class_link_selftime = NULL; |
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114 PerfCounter* ClassLoader::_perf_class_parse_time = NULL; |
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115 PerfCounter* ClassLoader::_perf_class_parse_selftime = NULL; |
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116 PerfCounter* ClassLoader::_perf_sys_class_lookup_time = NULL; |
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117 PerfCounter* ClassLoader::_perf_shared_classload_time = NULL; |
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118 PerfCounter* ClassLoader::_perf_sys_classload_time = NULL; |
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119 PerfCounter* ClassLoader::_perf_app_classload_time = NULL; |
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120 PerfCounter* ClassLoader::_perf_app_classload_selftime = NULL; |
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121 PerfCounter* ClassLoader::_perf_app_classload_count = NULL; |
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122 PerfCounter* ClassLoader::_perf_define_appclasses = NULL; |
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123 PerfCounter* ClassLoader::_perf_define_appclass_time = NULL; |
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124 PerfCounter* ClassLoader::_perf_define_appclass_selftime = NULL; |
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125 PerfCounter* ClassLoader::_perf_app_classfile_bytes_read = NULL; |
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126 PerfCounter* ClassLoader::_perf_sys_classfile_bytes_read = NULL; |
| 0 | 127 PerfCounter* ClassLoader::_sync_systemLoaderLockContentionRate = NULL; |
| 128 PerfCounter* ClassLoader::_sync_nonSystemLoaderLockContentionRate = NULL; | |
| 129 PerfCounter* ClassLoader::_sync_JVMFindLoadedClassLockFreeCounter = NULL; | |
| 130 PerfCounter* ClassLoader::_sync_JVMDefineClassLockFreeCounter = NULL; | |
| 131 PerfCounter* ClassLoader::_sync_JNIDefineClassLockFreeCounter = NULL; | |
| 132 PerfCounter* ClassLoader::_unsafe_defineClassCallCounter = NULL; | |
| 133 PerfCounter* ClassLoader::_isUnsyncloadClass = NULL; | |
| 134 PerfCounter* ClassLoader::_load_instance_class_failCounter = NULL; | |
| 135 | |
| 136 ClassPathEntry* ClassLoader::_first_entry = NULL; | |
| 137 ClassPathEntry* ClassLoader::_last_entry = NULL; | |
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138 int ClassLoader::_num_entries = 0; |
| 0 | 139 PackageHashtable* ClassLoader::_package_hash_table = NULL; |
| 140 | |
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141 #if INCLUDE_CDS |
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142 SharedPathsMiscInfo* ClassLoader::_shared_paths_misc_info = NULL; |
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143 #endif |
| 0 | 144 // helper routines |
| 145 bool string_starts_with(const char* str, const char* str_to_find) { | |
| 146 size_t str_len = strlen(str); | |
| 147 size_t str_to_find_len = strlen(str_to_find); | |
| 148 if (str_to_find_len > str_len) { | |
| 149 return false; | |
| 150 } | |
| 151 return (strncmp(str, str_to_find, str_to_find_len) == 0); | |
| 152 } | |
| 153 | |
| 154 bool string_ends_with(const char* str, const char* str_to_find) { | |
| 155 size_t str_len = strlen(str); | |
| 156 size_t str_to_find_len = strlen(str_to_find); | |
| 157 if (str_to_find_len > str_len) { | |
| 158 return false; | |
| 159 } | |
| 160 return (strncmp(str + (str_len - str_to_find_len), str_to_find, str_to_find_len) == 0); | |
| 161 } | |
| 162 | |
| 163 | |
| 164 MetaIndex::MetaIndex(char** meta_package_names, int num_meta_package_names) { | |
| 165 if (num_meta_package_names == 0) { | |
| 166 _meta_package_names = NULL; | |
| 167 _num_meta_package_names = 0; | |
| 168 } else { | |
| 6197 | 169 _meta_package_names = NEW_C_HEAP_ARRAY(char*, num_meta_package_names, mtClass); |
| 0 | 170 _num_meta_package_names = num_meta_package_names; |
| 171 memcpy(_meta_package_names, meta_package_names, num_meta_package_names * sizeof(char*)); | |
| 172 } | |
| 173 } | |
| 174 | |
| 175 | |
| 176 MetaIndex::~MetaIndex() { | |
| 6197 | 177 FREE_C_HEAP_ARRAY(char*, _meta_package_names, mtClass); |
| 0 | 178 } |
| 179 | |
| 180 | |
| 181 bool MetaIndex::may_contain(const char* class_name) { | |
| 182 if ( _num_meta_package_names == 0) { | |
| 183 return false; | |
| 184 } | |
| 185 size_t class_name_len = strlen(class_name); | |
| 186 for (int i = 0; i < _num_meta_package_names; i++) { | |
| 187 char* pkg = _meta_package_names[i]; | |
| 188 size_t pkg_len = strlen(pkg); | |
| 189 size_t min_len = MIN2(class_name_len, pkg_len); | |
| 190 if (!strncmp(class_name, pkg, min_len)) { | |
| 191 return true; | |
| 192 } | |
| 193 } | |
| 194 return false; | |
| 195 } | |
| 196 | |
| 197 | |
| 198 ClassPathEntry::ClassPathEntry() { | |
| 199 set_next(NULL); | |
| 200 } | |
| 201 | |
| 202 | |
| 203 bool ClassPathEntry::is_lazy() { | |
| 204 return false; | |
| 205 } | |
| 206 | |
| 20376 | 207 ClassPathDirEntry::ClassPathDirEntry(const char* dir) : ClassPathEntry() { |
| 208 char* copy = NEW_C_HEAP_ARRAY(char, strlen(dir)+1, mtClass); | |
| 209 strcpy(copy, dir); | |
| 210 _dir = copy; | |
| 0 | 211 } |
| 212 | |
| 213 | |
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214 ClassFileStream* ClassPathDirEntry::open_stream(const char* name, TRAPS) { |
| 0 | 215 // construct full path name |
| 216 char path[JVM_MAXPATHLEN]; | |
| 217 if (jio_snprintf(path, sizeof(path), "%s%s%s", _dir, os::file_separator(), name) == -1) { | |
| 218 return NULL; | |
| 219 } | |
| 220 // check if file exists | |
| 221 struct stat st; | |
| 222 if (os::stat(path, &st) == 0) { | |
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223 #if INCLUDE_CDS |
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224 if (DumpSharedSpaces) { |
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225 // We have already check in ClassLoader::check_shared_classpath() that the directory is empty, so |
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226 // we should never find a file underneath it -- unless user has added a new file while we are running |
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227 // the dump, in which case let's quit! |
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228 ShouldNotReachHere(); |
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229 } |
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230 #endif |
| 0 | 231 // found file, open it |
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232 int file_handle = os::open(path, 0, 0); |
| 0 | 233 if (file_handle != -1) { |
| 234 // read contents into resource array | |
| 235 u1* buffer = NEW_RESOURCE_ARRAY(u1, st.st_size); | |
| 236 size_t num_read = os::read(file_handle, (char*) buffer, st.st_size); | |
| 237 // close file | |
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238 os::close(file_handle); |
| 0 | 239 // construct ClassFileStream |
| 240 if (num_read == (size_t)st.st_size) { | |
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241 if (UsePerfData) { |
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242 ClassLoader::perf_sys_classfile_bytes_read()->inc(num_read); |
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243 } |
| 0 | 244 return new ClassFileStream(buffer, st.st_size, _dir); // Resource allocated |
| 245 } | |
| 246 } | |
| 247 } | |
| 248 return NULL; | |
| 249 } | |
| 250 | |
| 251 | |
| 252 ClassPathZipEntry::ClassPathZipEntry(jzfile* zip, const char* zip_name) : ClassPathEntry() { | |
| 253 _zip = zip; | |
| 20376 | 254 char *copy = NEW_C_HEAP_ARRAY(char, strlen(zip_name)+1, mtClass); |
| 255 strcpy(copy, zip_name); | |
| 256 _zip_name = copy; | |
| 0 | 257 } |
| 258 | |
| 259 ClassPathZipEntry::~ClassPathZipEntry() { | |
| 260 if (ZipClose != NULL) { | |
| 261 (*ZipClose)(_zip); | |
| 262 } | |
| 6197 | 263 FREE_C_HEAP_ARRAY(char, _zip_name, mtClass); |
| 0 | 264 } |
| 265 | |
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266 u1* ClassPathZipEntry::open_entry(const char* name, jint* filesize, bool nul_terminate, TRAPS) { |
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267 // enable call to C land |
| 0 | 268 JavaThread* thread = JavaThread::current(); |
| 269 ThreadToNativeFromVM ttn(thread); | |
| 270 // check whether zip archive contains name | |
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271 jint name_len; |
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272 jzentry* entry = (*FindEntry)(_zip, name, filesize, &name_len); |
| 0 | 273 if (entry == NULL) return NULL; |
| 274 u1* buffer; | |
| 275 char name_buf[128]; | |
| 276 char* filename; | |
| 277 if (name_len < 128) { | |
| 278 filename = name_buf; | |
| 279 } else { | |
| 280 filename = NEW_RESOURCE_ARRAY(char, name_len + 1); | |
| 281 } | |
| 282 | |
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283 // file found, get pointer to the entry in mmapped jar file. |
| 0 | 284 if (ReadMappedEntry == NULL || |
| 285 !(*ReadMappedEntry)(_zip, entry, &buffer, filename)) { | |
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286 // mmapped access not available, perhaps due to compression, |
| 0 | 287 // read contents into resource array |
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288 int size = (*filesize) + ((nul_terminate) ? 1 : 0); |
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289 buffer = NEW_RESOURCE_ARRAY(u1, size); |
| 0 | 290 if (!(*ReadEntry)(_zip, entry, buffer, filename)) return NULL; |
| 291 } | |
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292 |
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293 // return result |
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294 if (nul_terminate) { |
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295 buffer[*filesize] = 0; |
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296 } |
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297 return buffer; |
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298 } |
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299 |
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300 ClassFileStream* ClassPathZipEntry::open_stream(const char* name, TRAPS) { |
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301 jint filesize; |
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302 u1* buffer = open_entry(name, &filesize, false, CHECK_NULL); |
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303 if (buffer == NULL) { |
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304 return NULL; |
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305 } |
|
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306 if (UsePerfData) { |
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307 ClassLoader::perf_sys_classfile_bytes_read()->inc(filesize); |
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308 } |
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309 return new ClassFileStream(buffer, filesize, _zip_name); // Resource allocated |
| 0 | 310 } |
| 311 | |
| 312 // invoke function for each entry in the zip file | |
| 313 void ClassPathZipEntry::contents_do(void f(const char* name, void* context), void* context) { | |
| 314 JavaThread* thread = JavaThread::current(); | |
| 315 HandleMark handle_mark(thread); | |
| 316 ThreadToNativeFromVM ttn(thread); | |
| 317 for (int n = 0; ; n++) { | |
| 318 jzentry * ze = ((*GetNextEntry)(_zip, n)); | |
| 319 if (ze == NULL) break; | |
| 320 (*f)(ze->name, context); | |
| 321 } | |
| 322 } | |
| 323 | |
| 20376 | 324 LazyClassPathEntry::LazyClassPathEntry(const char* path, const struct stat* st, bool throw_exception) : ClassPathEntry() { |
| 0 | 325 _path = strdup(path); |
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326 _st = *st; |
| 0 | 327 _meta_index = NULL; |
| 328 _resolved_entry = NULL; | |
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329 _has_error = false; |
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330 _throw_exception = throw_exception; |
| 0 | 331 } |
| 332 | |
| 333 bool LazyClassPathEntry::is_jar_file() { | |
| 334 return ((_st.st_mode & S_IFREG) == S_IFREG); | |
| 335 } | |
| 336 | |
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337 ClassPathEntry* LazyClassPathEntry::resolve_entry(TRAPS) { |
| 0 | 338 if (_resolved_entry != NULL) { |
| 339 return (ClassPathEntry*) _resolved_entry; | |
| 340 } | |
| 341 ClassPathEntry* new_entry = NULL; | |
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342 new_entry = ClassLoader::create_class_path_entry(_path, &_st, false, _throw_exception, CHECK_NULL); |
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343 if (!_throw_exception && new_entry == NULL) { |
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344 assert(!HAS_PENDING_EXCEPTION, "must be"); |
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345 return NULL; |
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346 } |
| 0 | 347 { |
| 348 ThreadCritical tc; | |
| 349 if (_resolved_entry == NULL) { | |
| 350 _resolved_entry = new_entry; | |
| 351 return new_entry; | |
| 352 } | |
| 353 } | |
| 354 assert(_resolved_entry != NULL, "bug in MT-safe resolution logic"); | |
| 355 delete new_entry; | |
| 356 return (ClassPathEntry*) _resolved_entry; | |
| 357 } | |
| 358 | |
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359 ClassFileStream* LazyClassPathEntry::open_stream(const char* name, TRAPS) { |
| 0 | 360 if (_meta_index != NULL && |
| 361 !_meta_index->may_contain(name)) { | |
| 362 return NULL; | |
| 363 } | |
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364 if (_has_error) { |
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365 return NULL; |
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366 } |
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367 ClassPathEntry* cpe = resolve_entry(THREAD); |
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368 if (cpe == NULL) { |
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369 _has_error = true; |
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370 return NULL; |
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371 } else { |
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372 return cpe->open_stream(name, THREAD); |
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373 } |
| 0 | 374 } |
| 375 | |
| 376 bool LazyClassPathEntry::is_lazy() { | |
| 377 return true; | |
| 378 } | |
| 379 | |
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380 u1* LazyClassPathEntry::open_entry(const char* name, jint* filesize, bool nul_terminate, TRAPS) { |
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381 if (_has_error) { |
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382 return NULL; |
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383 } |
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384 ClassPathEntry* cpe = resolve_entry(THREAD); |
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385 if (cpe == NULL) { |
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386 _has_error = true; |
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387 return NULL; |
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388 } else if (cpe->is_jar_file()) { |
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389 return ((ClassPathZipEntry*)cpe)->open_entry(name, filesize, nul_terminate,THREAD); |
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390 } else { |
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391 ShouldNotReachHere(); |
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392 *filesize = 0; |
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393 return NULL; |
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394 } |
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395 } |
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396 |
| 0 | 397 static void print_meta_index(LazyClassPathEntry* entry, |
| 398 GrowableArray<char*>& meta_packages) { | |
| 399 tty->print("[Meta index for %s=", entry->name()); | |
| 400 for (int i = 0; i < meta_packages.length(); i++) { | |
| 401 if (i > 0) tty->print(" "); | |
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402 tty->print("%s", meta_packages.at(i)); |
| 0 | 403 } |
| 404 tty->print_cr("]"); | |
| 405 } | |
| 406 | |
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407 #if INCLUDE_CDS |
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408 void ClassLoader::exit_with_path_failure(const char* error, const char* message) { |
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409 assert(DumpSharedSpaces, "only called at dump time"); |
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410 tty->print_cr("Hint: enable -XX:+TraceClassPaths to diagnose the failure"); |
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411 vm_exit_during_initialization(error, message); |
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412 } |
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413 #endif |
| 0 | 414 |
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415 void ClassLoader::trace_class_path(const char* msg, const char* name) { |
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416 if (!TraceClassPaths) { |
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417 return; |
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418 } |
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419 |
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420 if (msg) { |
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421 tty->print("%s", msg); |
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422 } |
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423 if (name) { |
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424 if (strlen(name) < 256) { |
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425 tty->print("%s", name); |
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426 } else { |
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427 // For very long paths, we need to print each character separately, |
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428 // as print_cr() has a length limit |
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429 while (name[0] != '\0') { |
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430 tty->print("%c", name[0]); |
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431 name++; |
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432 } |
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433 } |
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434 } |
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435 if (msg && msg[0] == '[') { |
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436 tty->print_cr("]"); |
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437 } else { |
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438 tty->cr(); |
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439 } |
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440 } |
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441 |
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442 void ClassLoader::setup_bootstrap_meta_index() { |
| 0 | 443 // Set up meta index which allows us to open boot jars lazily if |
| 444 // class data sharing is enabled | |
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445 const char* meta_index_path = Arguments::get_meta_index_path(); |
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446 const char* meta_index_dir = Arguments::get_meta_index_dir(); |
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447 setup_meta_index(meta_index_path, meta_index_dir, 0); |
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448 } |
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449 |
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450 void ClassLoader::setup_meta_index(const char* meta_index_path, const char* meta_index_dir, int start_index) { |
| 0 | 451 const char* known_version = "% VERSION 2"; |
| 452 FILE* file = fopen(meta_index_path, "r"); | |
| 453 int line_no = 0; | |
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454 #if INCLUDE_CDS |
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455 if (DumpSharedSpaces) { |
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456 if (file != NULL) { |
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457 _shared_paths_misc_info->add_required_file(meta_index_path); |
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458 } else { |
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459 _shared_paths_misc_info->add_nonexist_path(meta_index_path); |
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460 } |
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461 } |
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462 #endif |
| 0 | 463 if (file != NULL) { |
| 464 ResourceMark rm; | |
| 465 LazyClassPathEntry* cur_entry = NULL; | |
| 466 GrowableArray<char*> boot_class_path_packages(10); | |
| 467 char package_name[256]; | |
| 468 bool skipCurrentJar = false; | |
| 469 while (fgets(package_name, sizeof(package_name), file) != NULL) { | |
| 470 ++line_no; | |
| 471 // Remove trailing newline | |
| 472 package_name[strlen(package_name) - 1] = '\0'; | |
| 473 switch(package_name[0]) { | |
| 474 case '%': | |
| 475 { | |
| 476 if ((line_no == 1) && (strcmp(package_name, known_version) != 0)) { | |
| 477 if (TraceClassLoading && Verbose) { | |
| 478 tty->print("[Unsupported meta index version]"); | |
| 479 } | |
| 480 fclose(file); | |
| 481 return; | |
| 482 } | |
| 483 } | |
| 484 | |
| 485 // These directives indicate jar files which contain only | |
| 486 // classes, only non-classfile resources, or a combination of | |
| 487 // the two. See src/share/classes/sun/misc/MetaIndex.java and | |
| 488 // make/tools/MetaIndex/BuildMetaIndex.java in the J2SE | |
| 489 // workspace. | |
| 490 case '#': | |
| 491 case '!': | |
| 492 case '@': | |
| 493 { | |
| 494 // Hand off current packages to current lazy entry (if any) | |
| 495 if ((cur_entry != NULL) && | |
| 496 (boot_class_path_packages.length() > 0)) { | |
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497 if ((TraceClassLoading || TraceClassPaths) && Verbose) { |
| 0 | 498 print_meta_index(cur_entry, boot_class_path_packages); |
| 499 } | |
| 500 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
| 501 boot_class_path_packages.length()); | |
| 502 cur_entry->set_meta_index(index); | |
| 503 } | |
| 504 cur_entry = NULL; | |
| 505 boot_class_path_packages.clear(); | |
| 506 | |
| 507 // Find lazy entry corresponding to this jar file | |
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508 int count = 0; |
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509 for (ClassPathEntry* entry = _first_entry; entry != NULL; entry = entry->next(), count++) { |
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510 if (count >= start_index && |
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511 entry->is_lazy() && |
| 0 | 512 string_starts_with(entry->name(), meta_index_dir) && |
| 513 string_ends_with(entry->name(), &package_name[2])) { | |
| 514 cur_entry = (LazyClassPathEntry*) entry; | |
| 515 break; | |
| 516 } | |
| 517 } | |
| 518 | |
| 519 // If the first character is '@', it indicates the following jar | |
| 520 // file is a resource only jar file in which case, we should skip | |
| 521 // reading the subsequent entries since the resource loading is | |
| 522 // totally handled by J2SE side. | |
| 523 if (package_name[0] == '@') { | |
| 524 if (cur_entry != NULL) { | |
| 525 cur_entry->set_meta_index(new MetaIndex(NULL, 0)); | |
| 526 } | |
| 527 cur_entry = NULL; | |
| 528 skipCurrentJar = true; | |
| 529 } else { | |
| 530 skipCurrentJar = false; | |
| 531 } | |
| 532 | |
| 533 break; | |
| 534 } | |
| 535 | |
| 536 default: | |
| 537 { | |
| 538 if (!skipCurrentJar && cur_entry != NULL) { | |
| 539 char* new_name = strdup(package_name); | |
| 540 boot_class_path_packages.append(new_name); | |
| 541 } | |
| 542 } | |
| 543 } | |
| 544 } | |
| 545 // Hand off current packages to current lazy entry (if any) | |
| 546 if ((cur_entry != NULL) && | |
| 547 (boot_class_path_packages.length() > 0)) { | |
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548 if ((TraceClassLoading || TraceClassPaths) && Verbose) { |
| 0 | 549 print_meta_index(cur_entry, boot_class_path_packages); |
| 550 } | |
| 551 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
| 552 boot_class_path_packages.length()); | |
| 553 cur_entry->set_meta_index(index); | |
| 554 } | |
| 555 fclose(file); | |
| 556 } | |
| 557 } | |
| 558 | |
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559 #if INCLUDE_CDS |
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560 void ClassLoader::check_shared_classpath(const char *path) { |
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561 if (strcmp(path, "") == 0) { |
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562 exit_with_path_failure("Cannot have empty path in archived classpaths", NULL); |
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563 } |
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564 |
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565 struct stat st; |
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566 if (os::stat(path, &st) == 0) { |
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567 if ((st.st_mode & S_IFREG) != S_IFREG) { // is directory |
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568 if (!os::dir_is_empty(path)) { |
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569 tty->print_cr("Error: non-empty directory '%s'", path); |
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570 exit_with_path_failure("CDS allows only empty directories in archived classpaths", NULL); |
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571 } |
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572 } |
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573 } |
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574 } |
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575 #endif |
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576 |
| 0 | 577 void ClassLoader::setup_bootstrap_search_path() { |
| 578 assert(_first_entry == NULL, "should not setup bootstrap class search path twice"); | |
| 20376 | 579 const char* sys_class_path = Arguments::get_sysclasspath(); |
| 580 if (PrintSharedArchiveAndExit) { | |
| 581 // Don't print sys_class_path - this is the bootcp of this current VM process, not necessarily | |
| 582 // the same as the bootcp of the shared archive. | |
| 583 } else { | |
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584 trace_class_path("[Bootstrap loader class path=", sys_class_path); |
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585 } |
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586 #if INCLUDE_CDS |
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587 if (DumpSharedSpaces) { |
| 20376 | 588 _shared_paths_misc_info->add_boot_classpath(sys_class_path); |
| 0 | 589 } |
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590 #endif |
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591 setup_search_path(sys_class_path); |
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592 } |
| 0 | 593 |
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594 #if INCLUDE_CDS |
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595 int ClassLoader::get_shared_paths_misc_info_size() { |
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596 return _shared_paths_misc_info->get_used_bytes(); |
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597 } |
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598 |
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599 void* ClassLoader::get_shared_paths_misc_info() { |
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600 return _shared_paths_misc_info->buffer(); |
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601 } |
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602 |
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603 bool ClassLoader::check_shared_paths_misc_info(void *buf, int size) { |
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604 SharedPathsMiscInfo* checker = SharedClassUtil::allocate_shared_paths_misc_info((char*)buf, size); |
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605 bool result = checker->check(); |
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606 delete checker; |
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607 return result; |
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608 } |
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609 #endif |
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610 |
| 20376 | 611 void ClassLoader::setup_search_path(const char *class_path) { |
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612 int offset = 0; |
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613 int len = (int)strlen(class_path); |
| 0 | 614 int end = 0; |
| 615 | |
| 616 // Iterate over class path entries | |
| 617 for (int start = 0; start < len; start = end) { | |
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618 while (class_path[end] && class_path[end] != os::path_separator()[0]) { |
| 0 | 619 end++; |
| 620 } | |
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621 EXCEPTION_MARK; |
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622 ResourceMark rm(THREAD); |
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623 char* path = NEW_RESOURCE_ARRAY(char, end - start + 1); |
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624 strncpy(path, &class_path[start], end - start); |
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625 path[end - start] = '\0'; |
| 0 | 626 update_class_path_entry_list(path, false); |
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627 #if INCLUDE_CDS |
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628 if (DumpSharedSpaces) { |
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629 check_shared_classpath(path); |
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630 } |
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631 #endif |
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632 while (class_path[end] == os::path_separator()[0]) { |
| 0 | 633 end++; |
| 634 } | |
| 635 } | |
| 636 } | |
| 637 | |
| 20376 | 638 ClassPathEntry* ClassLoader::create_class_path_entry(const char *path, const struct stat* st, |
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639 bool lazy, bool throw_exception, TRAPS) { |
| 0 | 640 JavaThread* thread = JavaThread::current(); |
| 641 if (lazy) { | |
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642 return new LazyClassPathEntry(path, st, throw_exception); |
| 0 | 643 } |
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644 ClassPathEntry* new_entry = NULL; |
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645 if ((st->st_mode & S_IFREG) == S_IFREG) { |
| 0 | 646 // Regular file, should be a zip file |
| 647 // Canonicalized filename | |
| 648 char canonical_path[JVM_MAXPATHLEN]; | |
| 649 if (!get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) { | |
| 650 // This matches the classic VM | |
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651 if (throw_exception) { |
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652 THROW_MSG_(vmSymbols::java_io_IOException(), "Bad pathname", NULL); |
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653 } else { |
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654 return NULL; |
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655 } |
| 0 | 656 } |
| 657 char* error_msg = NULL; | |
| 658 jzfile* zip; | |
| 659 { | |
| 660 // enable call to C land | |
| 661 ThreadToNativeFromVM ttn(thread); | |
| 662 HandleMark hm(thread); | |
| 663 zip = (*ZipOpen)(canonical_path, &error_msg); | |
| 664 } | |
| 665 if (zip != NULL && error_msg == NULL) { | |
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666 new_entry = new ClassPathZipEntry(zip, path); |
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667 if (TraceClassLoading || TraceClassPaths) { |
| 0 | 668 tty->print_cr("[Opened %s]", path); |
| 669 } | |
| 670 } else { | |
| 671 ResourceMark rm(thread); | |
| 672 char *msg; | |
| 673 if (error_msg == NULL) { | |
| 674 msg = NEW_RESOURCE_ARRAY(char, strlen(path) + 128); ; | |
| 675 jio_snprintf(msg, strlen(path) + 127, "error in opening JAR file %s", path); | |
| 676 } else { | |
| 677 int len = (int)(strlen(path) + strlen(error_msg) + 128); | |
| 678 msg = NEW_RESOURCE_ARRAY(char, len); ; | |
| 679 jio_snprintf(msg, len - 1, "error in opening JAR file <%s> %s", error_msg, path); | |
| 680 } | |
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681 if (throw_exception) { |
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682 THROW_MSG_(vmSymbols::java_lang_ClassNotFoundException(), msg, NULL); |
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683 } else { |
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684 return NULL; |
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685 } |
| 0 | 686 } |
| 687 } else { | |
| 688 // Directory | |
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689 new_entry = new ClassPathDirEntry(path); |
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690 if (TraceClassLoading || TraceClassPaths) { |
| 0 | 691 tty->print_cr("[Path %s]", path); |
| 692 } | |
| 693 } | |
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694 return new_entry; |
| 0 | 695 } |
| 696 | |
| 697 | |
| 698 // Create a class path zip entry for a given path (return NULL if not found | |
| 699 // or zip/JAR file cannot be opened) | |
| 700 ClassPathZipEntry* ClassLoader::create_class_path_zip_entry(const char *path) { | |
| 701 // check for a regular file | |
| 702 struct stat st; | |
| 703 if (os::stat(path, &st) == 0) { | |
| 704 if ((st.st_mode & S_IFREG) == S_IFREG) { | |
| 705 char canonical_path[JVM_MAXPATHLEN]; | |
| 20376 | 706 if (get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) { |
| 0 | 707 char* error_msg = NULL; |
| 708 jzfile* zip; | |
| 709 { | |
| 710 // enable call to C land | |
| 711 JavaThread* thread = JavaThread::current(); | |
| 712 ThreadToNativeFromVM ttn(thread); | |
| 713 HandleMark hm(thread); | |
| 714 zip = (*ZipOpen)(canonical_path, &error_msg); | |
| 715 } | |
| 716 if (zip != NULL && error_msg == NULL) { | |
| 717 // create using canonical path | |
| 718 return new ClassPathZipEntry(zip, canonical_path); | |
| 719 } | |
| 720 } | |
| 721 } | |
| 722 } | |
| 723 return NULL; | |
| 724 } | |
| 725 | |
| 726 // returns true if entry already on class path | |
| 727 bool ClassLoader::contains_entry(ClassPathEntry *entry) { | |
| 728 ClassPathEntry* e = _first_entry; | |
| 729 while (e != NULL) { | |
| 730 // assume zip entries have been canonicalized | |
| 731 if (strcmp(entry->name(), e->name()) == 0) { | |
| 732 return true; | |
| 733 } | |
| 734 e = e->next(); | |
| 735 } | |
| 736 return false; | |
| 737 } | |
| 738 | |
| 739 void ClassLoader::add_to_list(ClassPathEntry *new_entry) { | |
| 740 if (new_entry != NULL) { | |
| 741 if (_last_entry == NULL) { | |
| 742 _first_entry = _last_entry = new_entry; | |
| 743 } else { | |
| 744 _last_entry->set_next(new_entry); | |
| 745 _last_entry = new_entry; | |
| 746 } | |
| 747 } | |
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748 _num_entries ++; |
| 0 | 749 } |
| 750 | |
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751 // Returns true IFF the file/dir exists and the entry was successfully created. |
| 20376 | 752 bool ClassLoader::update_class_path_entry_list(const char *path, |
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753 bool check_for_duplicates, |
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754 bool throw_exception) { |
| 0 | 755 struct stat st; |
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756 if (os::stat(path, &st) == 0) { |
| 0 | 757 // File or directory found |
| 758 ClassPathEntry* new_entry = NULL; | |
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759 Thread* THREAD = Thread::current(); |
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760 new_entry = create_class_path_entry(path, &st, LazyBootClassLoader, throw_exception, CHECK_(false)); |
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761 if (new_entry == NULL) { |
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762 return false; |
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763 } |
| 0 | 764 // The kernel VM adds dynamically to the end of the classloader path and |
| 765 // doesn't reorder the bootclasspath which would break java.lang.Package | |
| 766 // (see PackageInfo). | |
| 767 // Add new entry to linked list | |
| 768 if (!check_for_duplicates || !contains_entry(new_entry)) { | |
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769 ClassLoaderExt::add_class_path_entry(path, check_for_duplicates, new_entry); |
| 0 | 770 } |
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771 return true; |
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772 } else { |
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773 #if INCLUDE_CDS |
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774 if (DumpSharedSpaces) { |
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775 _shared_paths_misc_info->add_nonexist_path(path); |
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776 } |
| 20376 | 777 #endif |
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778 return false; |
| 0 | 779 } |
| 780 } | |
| 781 | |
| 782 void ClassLoader::print_bootclasspath() { | |
| 783 ClassPathEntry* e = _first_entry; | |
| 784 tty->print("[bootclasspath= "); | |
| 785 while (e != NULL) { | |
| 786 tty->print("%s ;", e->name()); | |
| 787 e = e->next(); | |
| 788 } | |
| 789 tty->print_cr("]"); | |
| 790 } | |
| 791 | |
| 792 void ClassLoader::load_zip_library() { | |
| 793 assert(ZipOpen == NULL, "should not load zip library twice"); | |
| 794 // First make sure native library is loaded | |
| 795 os::native_java_library(); | |
| 796 // Load zip library | |
| 797 char path[JVM_MAXPATHLEN]; | |
| 798 char ebuf[1024]; | |
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799 void* handle = NULL; |
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800 if (os::dll_build_name(path, sizeof(path), Arguments::get_dll_dir(), "zip")) { |
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801 handle = os::dll_load(path, ebuf, sizeof ebuf); |
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802 } |
| 0 | 803 if (handle == NULL) { |
| 804 vm_exit_during_initialization("Unable to load ZIP library", path); | |
| 805 } | |
| 806 // Lookup zip entry points | |
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807 ZipOpen = CAST_TO_FN_PTR(ZipOpen_t, os::dll_lookup(handle, "ZIP_Open")); |
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808 ZipClose = CAST_TO_FN_PTR(ZipClose_t, os::dll_lookup(handle, "ZIP_Close")); |
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809 FindEntry = CAST_TO_FN_PTR(FindEntry_t, os::dll_lookup(handle, "ZIP_FindEntry")); |
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810 ReadEntry = CAST_TO_FN_PTR(ReadEntry_t, os::dll_lookup(handle, "ZIP_ReadEntry")); |
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811 ReadMappedEntry = CAST_TO_FN_PTR(ReadMappedEntry_t, os::dll_lookup(handle, "ZIP_ReadMappedEntry")); |
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812 GetNextEntry = CAST_TO_FN_PTR(GetNextEntry_t, os::dll_lookup(handle, "ZIP_GetNextEntry")); |
| 0 | 813 |
| 814 // ZIP_Close is not exported on Windows in JDK5.0 so don't abort if ZIP_Close is NULL | |
| 815 if (ZipOpen == NULL || FindEntry == NULL || ReadEntry == NULL || GetNextEntry == NULL) { | |
| 816 vm_exit_during_initialization("Corrupted ZIP library", path); | |
| 817 } | |
| 818 | |
| 819 // Lookup canonicalize entry in libjava.dll | |
| 820 void *javalib_handle = os::native_java_library(); | |
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821 CanonicalizeEntry = CAST_TO_FN_PTR(canonicalize_fn_t, os::dll_lookup(javalib_handle, "Canonicalize")); |
| 0 | 822 // This lookup only works on 1.3. Do not check for non-null here |
| 823 } | |
| 824 | |
| 825 // PackageInfo data exists in order to support the java.lang.Package | |
| 826 // class. A Package object provides information about a java package | |
| 827 // (version, vendor, etc.) which originates in the manifest of the jar | |
| 828 // file supplying the package. For application classes, the ClassLoader | |
| 829 // object takes care of this. | |
| 830 | |
| 831 // For system (boot) classes, the Java code in the Package class needs | |
| 832 // to be able to identify which source jar file contained the boot | |
| 833 // class, so that it can extract the manifest from it. This table | |
| 834 // identifies java packages with jar files in the boot classpath. | |
| 835 | |
| 836 // Because the boot classpath cannot change, the classpath index is | |
| 837 // sufficient to identify the source jar file or directory. (Since | |
| 838 // directories have no manifests, the directory name is not required, | |
| 839 // but is available.) | |
| 840 | |
| 841 // When using sharing -- the pathnames of entries in the boot classpath | |
| 842 // may not be the same at runtime as they were when the archive was | |
| 843 // created (NFS, Samba, etc.). The actual files and directories named | |
| 844 // in the classpath must be the same files, in the same order, even | |
| 845 // though the exact name is not the same. | |
| 846 | |
| 6197 | 847 class PackageInfo: public BasicHashtableEntry<mtClass> { |
| 0 | 848 public: |
| 849 const char* _pkgname; // Package name | |
| 850 int _classpath_index; // Index of directory or JAR file loaded from | |
| 851 | |
| 852 PackageInfo* next() { | |
| 6197 | 853 return (PackageInfo*)BasicHashtableEntry<mtClass>::next(); |
| 0 | 854 } |
| 855 | |
| 856 const char* pkgname() { return _pkgname; } | |
| 857 void set_pkgname(char* pkgname) { _pkgname = pkgname; } | |
| 858 | |
| 859 const char* filename() { | |
| 860 return ClassLoader::classpath_entry(_classpath_index)->name(); | |
| 861 } | |
| 862 | |
| 863 void set_index(int index) { | |
| 864 _classpath_index = index; | |
| 865 } | |
| 866 }; | |
| 867 | |
| 868 | |
| 6197 | 869 class PackageHashtable : public BasicHashtable<mtClass> { |
| 0 | 870 private: |
| 871 inline unsigned int compute_hash(const char *s, int n) { | |
| 872 unsigned int val = 0; | |
| 873 while (--n >= 0) { | |
| 874 val = *s++ + 31 * val; | |
| 875 } | |
| 876 return val; | |
| 877 } | |
| 878 | |
| 879 PackageInfo* bucket(int index) { | |
| 6197 | 880 return (PackageInfo*)BasicHashtable<mtClass>::bucket(index); |
| 0 | 881 } |
| 882 | |
| 883 PackageInfo* get_entry(int index, unsigned int hash, | |
| 884 const char* pkgname, size_t n) { | |
| 885 for (PackageInfo* pp = bucket(index); pp != NULL; pp = pp->next()) { | |
| 886 if (pp->hash() == hash && | |
| 887 strncmp(pkgname, pp->pkgname(), n) == 0 && | |
| 888 pp->pkgname()[n] == '\0') { | |
| 889 return pp; | |
| 890 } | |
| 891 } | |
| 892 return NULL; | |
| 893 } | |
| 894 | |
| 895 public: | |
| 896 PackageHashtable(int table_size) | |
| 6197 | 897 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo)) {} |
| 0 | 898 |
| 6197 | 899 PackageHashtable(int table_size, HashtableBucket<mtClass>* t, int number_of_entries) |
| 900 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo), t, number_of_entries) {} | |
| 0 | 901 |
| 902 PackageInfo* get_entry(const char* pkgname, int n) { | |
| 903 unsigned int hash = compute_hash(pkgname, n); | |
| 904 return get_entry(hash_to_index(hash), hash, pkgname, n); | |
| 905 } | |
| 906 | |
| 907 PackageInfo* new_entry(char* pkgname, int n) { | |
| 908 unsigned int hash = compute_hash(pkgname, n); | |
| 909 PackageInfo* pp; | |
| 6197 | 910 pp = (PackageInfo*)BasicHashtable<mtClass>::new_entry(hash); |
| 0 | 911 pp->set_pkgname(pkgname); |
| 912 return pp; | |
| 913 } | |
| 914 | |
| 915 void add_entry(PackageInfo* pp) { | |
| 916 int index = hash_to_index(pp->hash()); | |
| 6197 | 917 BasicHashtable<mtClass>::add_entry(index, pp); |
| 0 | 918 } |
| 919 | |
| 920 void copy_pkgnames(const char** packages) { | |
| 921 int n = 0; | |
| 922 for (int i = 0; i < table_size(); ++i) { | |
| 923 for (PackageInfo* pp = bucket(i); pp != NULL; pp = pp->next()) { | |
| 924 packages[n++] = pp->pkgname(); | |
| 925 } | |
| 926 } | |
| 927 assert(n == number_of_entries(), "just checking"); | |
| 928 } | |
| 929 | |
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930 CDS_ONLY(void copy_table(char** top, char* end, PackageHashtable* table);) |
| 0 | 931 }; |
| 932 | |
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933 #if INCLUDE_CDS |
| 0 | 934 void PackageHashtable::copy_table(char** top, char* end, |
| 935 PackageHashtable* table) { | |
| 936 // Copy (relocate) the table to the shared space. | |
| 6197 | 937 BasicHashtable<mtClass>::copy_table(top, end); |
| 0 | 938 |
| 939 // Calculate the space needed for the package name strings. | |
| 940 int i; | |
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941 intptr_t* tableSize = (intptr_t*)(*top); |
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942 *top += sizeof(intptr_t); // For table size |
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943 char* tableStart = *top; |
| 0 | 944 |
| 945 for (i = 0; i < table_size(); ++i) { | |
| 946 for (PackageInfo* pp = table->bucket(i); | |
| 947 pp != NULL; | |
| 948 pp = pp->next()) { | |
| 949 int n1 = (int)(strlen(pp->pkgname()) + 1); | |
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950 if (*top + n1 >= end) { |
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951 report_out_of_shared_space(SharedMiscData); |
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952 } |
| 0 | 953 pp->set_pkgname((char*)memcpy(*top, pp->pkgname(), n1)); |
| 954 *top += n1; | |
| 955 } | |
| 956 } | |
| 957 *top = (char*)align_size_up((intptr_t)*top, sizeof(HeapWord)); | |
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958 if (*top >= end) { |
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959 report_out_of_shared_space(SharedMiscData); |
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960 } |
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961 |
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962 // Write table size |
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963 intptr_t len = *top - (char*)tableStart; |
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964 *tableSize = len; |
| 0 | 965 } |
| 966 | |
| 967 | |
| 968 void ClassLoader::copy_package_info_buckets(char** top, char* end) { | |
| 969 _package_hash_table->copy_buckets(top, end); | |
| 970 } | |
| 971 | |
| 972 void ClassLoader::copy_package_info_table(char** top, char* end) { | |
| 973 _package_hash_table->copy_table(top, end, _package_hash_table); | |
| 974 } | |
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975 #endif |
| 0 | 976 |
| 977 PackageInfo* ClassLoader::lookup_package(const char *pkgname) { | |
| 978 const char *cp = strrchr(pkgname, '/'); | |
| 979 if (cp != NULL) { | |
| 980 // Package prefix found | |
| 981 int n = cp - pkgname + 1; | |
| 982 return _package_hash_table->get_entry(pkgname, n); | |
| 983 } | |
| 984 return NULL; | |
| 985 } | |
| 986 | |
| 987 | |
| 988 bool ClassLoader::add_package(const char *pkgname, int classpath_index, TRAPS) { | |
| 989 assert(pkgname != NULL, "just checking"); | |
| 990 // Bootstrap loader no longer holds system loader lock obj serializing | |
| 991 // load_instance_class and thereby add_package | |
| 992 { | |
| 993 MutexLocker ml(PackageTable_lock, THREAD); | |
| 994 // First check for previously loaded entry | |
| 995 PackageInfo* pp = lookup_package(pkgname); | |
| 996 if (pp != NULL) { | |
| 997 // Existing entry found, check source of package | |
| 998 pp->set_index(classpath_index); | |
| 999 return true; | |
| 1000 } | |
| 1001 | |
| 1002 const char *cp = strrchr(pkgname, '/'); | |
| 1003 if (cp != NULL) { | |
| 1004 // Package prefix found | |
| 1005 int n = cp - pkgname + 1; | |
| 1006 | |
| 6197 | 1007 char* new_pkgname = NEW_C_HEAP_ARRAY(char, n + 1, mtClass); |
| 0 | 1008 if (new_pkgname == NULL) { |
| 1009 return false; | |
| 1010 } | |
| 1011 | |
| 1012 memcpy(new_pkgname, pkgname, n); | |
| 1013 new_pkgname[n] = '\0'; | |
| 1014 pp = _package_hash_table->new_entry(new_pkgname, n); | |
| 1015 pp->set_index(classpath_index); | |
| 1016 | |
| 1017 // Insert into hash table | |
| 1018 _package_hash_table->add_entry(pp); | |
| 1019 } | |
| 1020 return true; | |
| 1021 } | |
| 1022 } | |
| 1023 | |
| 1024 | |
| 1025 oop ClassLoader::get_system_package(const char* name, TRAPS) { | |
| 1026 PackageInfo* pp; | |
| 1027 { | |
| 1028 MutexLocker ml(PackageTable_lock, THREAD); | |
| 1029 pp = lookup_package(name); | |
| 1030 } | |
| 1031 if (pp == NULL) { | |
| 1032 return NULL; | |
| 1033 } else { | |
| 1034 Handle p = java_lang_String::create_from_str(pp->filename(), THREAD); | |
| 1035 return p(); | |
| 1036 } | |
| 1037 } | |
| 1038 | |
| 1039 | |
| 1040 objArrayOop ClassLoader::get_system_packages(TRAPS) { | |
| 1041 ResourceMark rm(THREAD); | |
| 1042 int nof_entries; | |
| 1043 const char** packages; | |
| 1044 { | |
| 1045 MutexLocker ml(PackageTable_lock, THREAD); | |
| 1046 // Allocate resource char* array containing package names | |
| 1047 nof_entries = _package_hash_table->number_of_entries(); | |
| 1048 if ((packages = NEW_RESOURCE_ARRAY(const char*, nof_entries)) == NULL) { | |
| 1049 return NULL; | |
| 1050 } | |
| 1051 _package_hash_table->copy_pkgnames(packages); | |
| 1052 } | |
| 1053 // Allocate objArray and fill with java.lang.String | |
| 1142 | 1054 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 1055 nof_entries, CHECK_0); |
| 1056 objArrayHandle result(THREAD, r); | |
| 1057 for (int i = 0; i < nof_entries; i++) { | |
| 1058 Handle str = java_lang_String::create_from_str(packages[i], CHECK_0); | |
| 1059 result->obj_at_put(i, str()); | |
| 1060 } | |
| 1061 | |
| 1062 return result(); | |
| 1063 } | |
| 1064 | |
| 1065 | |
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1066 instanceKlassHandle ClassLoader::load_classfile(Symbol* h_name, TRAPS) { |
| 0 | 1067 ResourceMark rm(THREAD); |
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1068 const char* class_name = h_name->as_C_string(); |
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1069 EventMark m("loading class %s", class_name); |
| 0 | 1070 ThreadProfilerMark tpm(ThreadProfilerMark::classLoaderRegion); |
| 1071 | |
| 1072 stringStream st; | |
| 1073 // st.print() uses too much stack space while handling a StackOverflowError | |
| 1074 // st.print("%s.class", h_name->as_utf8()); | |
| 1075 st.print_raw(h_name->as_utf8()); | |
| 1076 st.print_raw(".class"); | |
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1077 const char* file_name = st.as_string(); |
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1078 ClassLoaderExt::Context context(class_name, file_name, THREAD); |
| 0 | 1079 |
| 1080 // Lookup stream for parsing .class file | |
| 1081 ClassFileStream* stream = NULL; | |
| 1082 int classpath_index = 0; | |
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1083 ClassPathEntry* e = NULL; |
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1084 instanceKlassHandle h; |
| 0 | 1085 { |
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1086 PerfClassTraceTime vmtimer(perf_sys_class_lookup_time(), |
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1087 ((JavaThread*) THREAD)->get_thread_stat()->perf_timers_addr(), |
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1088 PerfClassTraceTime::CLASS_LOAD); |
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1089 e = _first_entry; |
| 0 | 1090 while (e != NULL) { |
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1091 stream = e->open_stream(file_name, CHECK_NULL); |
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1092 if (!context.check(stream, classpath_index)) { |
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1093 return h; // NULL |
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1094 } |
| 0 | 1095 if (stream != NULL) { |
| 1096 break; | |
| 1097 } | |
| 1098 e = e->next(); | |
| 1099 ++classpath_index; | |
| 1100 } | |
| 1101 } | |
| 1102 | |
| 1103 if (stream != NULL) { | |
| 1104 // class file found, parse it | |
| 1105 ClassFileParser parser(stream); | |
|
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1106 ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data(); |
| 0 | 1107 Handle protection_domain; |
|
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1108 TempNewSymbol parsed_name = NULL; |
| 0 | 1109 instanceKlassHandle result = parser.parseClassFile(h_name, |
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1110 loader_data, |
| 0 | 1111 protection_domain, |
| 1112 parsed_name, | |
|
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1113 context.should_verify(classpath_index), |
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1114 THREAD); |
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1115 if (HAS_PENDING_EXCEPTION) { |
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1116 ResourceMark rm; |
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1117 if (DumpSharedSpaces) { |
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1118 tty->print_cr("Preload Error: Failed to load %s", class_name); |
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1119 } |
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1120 return h; |
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1121 } |
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1122 h = context.record_result(classpath_index, e, result, THREAD); |
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1123 } else { |
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1124 if (DumpSharedSpaces) { |
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1125 tty->print_cr("Preload Error: Cannot find %s", class_name); |
| 0 | 1126 } |
| 1127 } | |
| 1128 | |
| 1129 return h; | |
| 1130 } | |
| 1131 | |
| 1132 | |
| 6197 | 1133 void ClassLoader::create_package_info_table(HashtableBucket<mtClass> *t, int length, |
| 0 | 1134 int number_of_entries) { |
| 1135 assert(_package_hash_table == NULL, "One package info table allowed."); | |
| 6197 | 1136 assert(length == package_hash_table_size * sizeof(HashtableBucket<mtClass>), |
| 0 | 1137 "bad shared package info size."); |
| 1138 _package_hash_table = new PackageHashtable(package_hash_table_size, t, | |
| 1139 number_of_entries); | |
| 1140 } | |
| 1141 | |
| 1142 | |
| 1143 void ClassLoader::create_package_info_table() { | |
| 1144 assert(_package_hash_table == NULL, "shouldn't have one yet"); | |
| 1145 _package_hash_table = new PackageHashtable(package_hash_table_size); | |
| 1146 } | |
| 1147 | |
| 1148 | |
| 1149 // Initialize the class loader's access to methods in libzip. Parse and | |
| 1150 // process the boot classpath into a list ClassPathEntry objects. Once | |
| 1151 // this list has been created, it must not change order (see class PackageInfo) | |
| 1152 // it can be appended to and is by jvmti and the kernel vm. | |
| 1153 | |
| 1154 void ClassLoader::initialize() { | |
| 1155 assert(_package_hash_table == NULL, "should have been initialized by now."); | |
| 1156 EXCEPTION_MARK; | |
| 1157 | |
| 1158 if (UsePerfData) { | |
| 1159 // jvmstat performance counters | |
| 1160 NEWPERFTICKCOUNTER(_perf_accumulated_time, SUN_CLS, "time"); | |
| 1161 NEWPERFTICKCOUNTER(_perf_class_init_time, SUN_CLS, "classInitTime"); | |
|
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1162 NEWPERFTICKCOUNTER(_perf_class_init_selftime, SUN_CLS, "classInitTime.self"); |
| 0 | 1163 NEWPERFTICKCOUNTER(_perf_class_verify_time, SUN_CLS, "classVerifyTime"); |
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1164 NEWPERFTICKCOUNTER(_perf_class_verify_selftime, SUN_CLS, "classVerifyTime.self"); |
| 0 | 1165 NEWPERFTICKCOUNTER(_perf_class_link_time, SUN_CLS, "classLinkedTime"); |
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1166 NEWPERFTICKCOUNTER(_perf_class_link_selftime, SUN_CLS, "classLinkedTime.self"); |
| 0 | 1167 NEWPERFEVENTCOUNTER(_perf_classes_inited, SUN_CLS, "initializedClasses"); |
| 1168 NEWPERFEVENTCOUNTER(_perf_classes_linked, SUN_CLS, "linkedClasses"); | |
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1169 NEWPERFEVENTCOUNTER(_perf_classes_verified, SUN_CLS, "verifiedClasses"); |
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1170 |
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1171 NEWPERFTICKCOUNTER(_perf_class_parse_time, SUN_CLS, "parseClassTime"); |
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1172 NEWPERFTICKCOUNTER(_perf_class_parse_selftime, SUN_CLS, "parseClassTime.self"); |
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1173 NEWPERFTICKCOUNTER(_perf_sys_class_lookup_time, SUN_CLS, "lookupSysClassTime"); |
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1174 NEWPERFTICKCOUNTER(_perf_shared_classload_time, SUN_CLS, "sharedClassLoadTime"); |
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1175 NEWPERFTICKCOUNTER(_perf_sys_classload_time, SUN_CLS, "sysClassLoadTime"); |
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1176 NEWPERFTICKCOUNTER(_perf_app_classload_time, SUN_CLS, "appClassLoadTime"); |
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1177 NEWPERFTICKCOUNTER(_perf_app_classload_selftime, SUN_CLS, "appClassLoadTime.self"); |
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1178 NEWPERFEVENTCOUNTER(_perf_app_classload_count, SUN_CLS, "appClassLoadCount"); |
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1179 NEWPERFTICKCOUNTER(_perf_define_appclasses, SUN_CLS, "defineAppClasses"); |
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1180 NEWPERFTICKCOUNTER(_perf_define_appclass_time, SUN_CLS, "defineAppClassTime"); |
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1181 NEWPERFTICKCOUNTER(_perf_define_appclass_selftime, SUN_CLS, "defineAppClassTime.self"); |
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1182 NEWPERFBYTECOUNTER(_perf_app_classfile_bytes_read, SUN_CLS, "appClassBytes"); |
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1183 NEWPERFBYTECOUNTER(_perf_sys_classfile_bytes_read, SUN_CLS, "sysClassBytes"); |
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1184 |
| 0 | 1185 |
| 1186 // The following performance counters are added for measuring the impact | |
| 1187 // of the bug fix of 6365597. They are mainly focused on finding out | |
| 1188 // the behavior of system & user-defined classloader lock, whether | |
| 1189 // ClassLoader.loadClass/findClass is being called synchronized or not. | |
| 1190 // Also two additional counters are created to see whether 'UnsyncloadClass' | |
| 1191 // flag is being set or not and how many times load_instance_class call | |
| 1192 // fails with linkageError etc. | |
| 1193 NEWPERFEVENTCOUNTER(_sync_systemLoaderLockContentionRate, SUN_CLS, | |
| 1194 "systemLoaderLockContentionRate"); | |
| 1195 NEWPERFEVENTCOUNTER(_sync_nonSystemLoaderLockContentionRate, SUN_CLS, | |
| 1196 "nonSystemLoaderLockContentionRate"); | |
| 1197 NEWPERFEVENTCOUNTER(_sync_JVMFindLoadedClassLockFreeCounter, SUN_CLS, | |
| 1198 "jvmFindLoadedClassNoLockCalls"); | |
| 1199 NEWPERFEVENTCOUNTER(_sync_JVMDefineClassLockFreeCounter, SUN_CLS, | |
| 1200 "jvmDefineClassNoLockCalls"); | |
| 1201 | |
| 1202 NEWPERFEVENTCOUNTER(_sync_JNIDefineClassLockFreeCounter, SUN_CLS, | |
| 1203 "jniDefineClassNoLockCalls"); | |
| 1204 | |
| 1205 NEWPERFEVENTCOUNTER(_unsafe_defineClassCallCounter, SUN_CLS, | |
| 1206 "unsafeDefineClassCalls"); | |
| 1207 | |
| 1208 NEWPERFEVENTCOUNTER(_isUnsyncloadClass, SUN_CLS, "isUnsyncloadClassSet"); | |
| 1209 NEWPERFEVENTCOUNTER(_load_instance_class_failCounter, SUN_CLS, | |
| 1210 "loadInstanceClassFailRate"); | |
| 1211 | |
| 1212 // increment the isUnsyncloadClass counter if UnsyncloadClass is set. | |
| 1213 if (UnsyncloadClass) { | |
| 1214 _isUnsyncloadClass->inc(); | |
| 1215 } | |
| 1216 } | |
| 1217 | |
| 1218 // lookup zip library entry points | |
| 1219 load_zip_library(); | |
|
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1220 #if INCLUDE_CDS |
| 0 | 1221 // initialize search path |
|
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1222 if (DumpSharedSpaces) { |
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1223 _shared_paths_misc_info = SharedClassUtil::allocate_shared_paths_misc_info(); |
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1224 } |
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1225 #endif |
| 0 | 1226 setup_bootstrap_search_path(); |
| 1227 if (LazyBootClassLoader) { | |
| 1228 // set up meta index which makes boot classpath initialization lazier | |
|
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1229 setup_bootstrap_meta_index(); |
| 0 | 1230 } |
| 1231 } | |
| 1232 | |
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1233 #if INCLUDE_CDS |
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1234 void ClassLoader::initialize_shared_path() { |
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1235 if (DumpSharedSpaces) { |
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1236 ClassLoaderExt::setup_search_paths(); |
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1237 _shared_paths_misc_info->write_jint(0); // see comments in SharedPathsMiscInfo::check() |
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1238 } |
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1239 } |
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1240 #endif |
| 0 | 1241 |
| 1242 jlong ClassLoader::classloader_time_ms() { | |
| 1243 return UsePerfData ? | |
| 1244 Management::ticks_to_ms(_perf_accumulated_time->get_value()) : -1; | |
| 1245 } | |
| 1246 | |
| 1247 jlong ClassLoader::class_init_count() { | |
| 1248 return UsePerfData ? _perf_classes_inited->get_value() : -1; | |
| 1249 } | |
| 1250 | |
| 1251 jlong ClassLoader::class_init_time_ms() { | |
| 1252 return UsePerfData ? | |
| 1253 Management::ticks_to_ms(_perf_class_init_time->get_value()) : -1; | |
| 1254 } | |
| 1255 | |
| 1256 jlong ClassLoader::class_verify_time_ms() { | |
| 1257 return UsePerfData ? | |
| 1258 Management::ticks_to_ms(_perf_class_verify_time->get_value()) : -1; | |
| 1259 } | |
| 1260 | |
| 1261 jlong ClassLoader::class_link_count() { | |
| 1262 return UsePerfData ? _perf_classes_linked->get_value() : -1; | |
| 1263 } | |
| 1264 | |
| 1265 jlong ClassLoader::class_link_time_ms() { | |
| 1266 return UsePerfData ? | |
| 1267 Management::ticks_to_ms(_perf_class_link_time->get_value()) : -1; | |
| 1268 } | |
| 1269 | |
| 1270 int ClassLoader::compute_Object_vtable() { | |
| 1271 // hardwired for JDK1.2 -- would need to duplicate class file parsing | |
| 1272 // code to determine actual value from file | |
| 1273 // Would be value '11' if finals were in vtable | |
| 1274 int JDK_1_2_Object_vtable_size = 5; | |
| 1275 return JDK_1_2_Object_vtable_size * vtableEntry::size(); | |
| 1276 } | |
| 1277 | |
| 1278 | |
| 1279 void classLoader_init() { | |
| 1280 ClassLoader::initialize(); | |
| 1281 } | |
| 1282 | |
| 1283 | |
| 20376 | 1284 bool ClassLoader::get_canonical_path(const char* orig, char* out, int len) { |
| 0 | 1285 assert(orig != NULL && out != NULL && len > 0, "bad arguments"); |
| 1286 if (CanonicalizeEntry != NULL) { | |
| 20376 | 1287 JavaThread* THREAD = JavaThread::current(); |
| 1288 JNIEnv* env = THREAD->jni_environment(); | |
| 1289 ResourceMark rm(THREAD); | |
| 1290 | |
| 1291 // os::native_path writes into orig_copy | |
| 1292 char* orig_copy = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, strlen(orig)+1); | |
| 1293 strcpy(orig_copy, orig); | |
| 1294 if ((CanonicalizeEntry)(env, os::native_path(orig_copy), out, len) < 0) { | |
| 0 | 1295 return false; |
| 1296 } | |
| 1297 } else { | |
| 1298 // On JDK 1.2.2 the Canonicalize does not exist, so just do nothing | |
| 1299 strncpy(out, orig, len); | |
| 1300 out[len - 1] = '\0'; | |
| 1301 } | |
| 1302 return true; | |
| 1303 } | |
| 1304 | |
| 1305 #ifndef PRODUCT | |
| 1306 | |
| 1307 void ClassLoader::verify() { | |
| 1308 _package_hash_table->verify(); | |
| 1309 } | |
| 1310 | |
| 1311 | |
| 1312 // CompileTheWorld | |
| 1313 // | |
| 1314 // Iterates over all class path entries and forces compilation of all methods | |
| 1315 // in all classes found. Currently, only zip/jar archives are searched. | |
| 1316 // | |
| 1317 // The classes are loaded by the Java level bootstrap class loader, and the | |
| 1318 // initializer is called. If DelayCompilationDuringStartup is true (default), | |
| 1319 // the interpreter will run the initialization code. Note that forcing | |
| 1320 // initialization in this way could potentially lead to initialization order | |
| 1321 // problems, in which case we could just force the initialization bit to be set. | |
| 1322 | |
| 1323 | |
| 1324 // We need to iterate over the contents of a zip/jar file, so we replicate the | |
| 1325 // jzcell and jzfile definitions from zip_util.h but rename jzfile to real_jzfile, | |
| 1326 // since jzfile already has a void* definition. | |
| 1327 // | |
| 1328 // Note that this is only used in debug mode. | |
| 1329 // | |
| 1330 // HotSpot integration note: | |
| 1331 // Matches zip_util.h 1.14 99/06/01 from jdk1.3 beta H build | |
| 1332 | |
| 1333 | |
| 1334 // JDK 1.3 version | |
| 1335 typedef struct real_jzentry13 { /* Zip file entry */ | |
| 1336 char *name; /* entry name */ | |
| 1337 jint time; /* modification time */ | |
| 1338 jint size; /* size of uncompressed data */ | |
| 1339 jint csize; /* size of compressed data (zero if uncompressed) */ | |
| 1340 jint crc; /* crc of uncompressed data */ | |
| 1341 char *comment; /* optional zip file comment */ | |
| 1342 jbyte *extra; /* optional extra data */ | |
| 1343 jint pos; /* position of LOC header (if negative) or data */ | |
| 1344 } real_jzentry13; | |
| 1345 | |
| 1346 typedef struct real_jzfile13 { /* Zip file */ | |
| 1347 char *name; /* zip file name */ | |
| 1348 jint refs; /* number of active references */ | |
| 1349 jint fd; /* open file descriptor */ | |
| 1350 void *lock; /* read lock */ | |
| 1351 char *comment; /* zip file comment */ | |
| 1352 char *msg; /* zip error message */ | |
| 1353 void *entries; /* array of hash cells */ | |
| 1354 jint total; /* total number of entries */ | |
| 1355 unsigned short *table; /* Hash chain heads: indexes into entries */ | |
| 1356 jint tablelen; /* number of hash eads */ | |
| 1357 real_jzfile13 *next; /* next zip file in search list */ | |
| 1358 jzentry *cache; /* we cache the most recently freed jzentry */ | |
| 1359 /* Information on metadata names in META-INF directory */ | |
| 1360 char **metanames; /* array of meta names (may have null names) */ | |
| 1361 jint metacount; /* number of slots in metanames array */ | |
| 1362 /* If there are any per-entry comments, they are in the comments array */ | |
| 1363 char **comments; | |
| 1364 } real_jzfile13; | |
| 1365 | |
| 1366 // JDK 1.2 version | |
| 1367 typedef struct real_jzentry12 { /* Zip file entry */ | |
| 1368 char *name; /* entry name */ | |
| 1369 jint time; /* modification time */ | |
| 1370 jint size; /* size of uncompressed data */ | |
| 1371 jint csize; /* size of compressed data (zero if uncompressed) */ | |
| 1372 jint crc; /* crc of uncompressed data */ | |
| 1373 char *comment; /* optional zip file comment */ | |
| 1374 jbyte *extra; /* optional extra data */ | |
| 1375 jint pos; /* position of LOC header (if negative) or data */ | |
| 1376 struct real_jzentry12 *next; /* next entry in hash table */ | |
| 1377 } real_jzentry12; | |
| 1378 | |
| 1379 typedef struct real_jzfile12 { /* Zip file */ | |
| 1380 char *name; /* zip file name */ | |
| 1381 jint refs; /* number of active references */ | |
| 1382 jint fd; /* open file descriptor */ | |
| 1383 void *lock; /* read lock */ | |
| 1384 char *comment; /* zip file comment */ | |
| 1385 char *msg; /* zip error message */ | |
| 1386 real_jzentry12 *entries; /* array of zip entries */ | |
| 1387 jint total; /* total number of entries */ | |
| 1388 real_jzentry12 **table; /* hash table of entries */ | |
| 1389 jint tablelen; /* number of buckets */ | |
| 1390 jzfile *next; /* next zip file in search list */ | |
| 1391 } real_jzfile12; | |
| 1392 | |
| 1393 | |
| 1394 void ClassPathDirEntry::compile_the_world(Handle loader, TRAPS) { | |
| 1395 // For now we only compile all methods in all classes in zip/jar files | |
| 1396 tty->print_cr("CompileTheWorld : Skipped classes in %s", _dir); | |
| 1397 tty->cr(); | |
| 1398 } | |
| 1399 | |
| 1400 | |
| 1401 bool ClassPathDirEntry::is_rt_jar() { | |
| 1402 return false; | |
| 1403 } | |
| 1404 | |
| 1405 void ClassPathZipEntry::compile_the_world(Handle loader, TRAPS) { | |
| 1406 if (JDK_Version::is_jdk12x_version()) { | |
| 1407 compile_the_world12(loader, THREAD); | |
| 1408 } else { | |
| 1409 compile_the_world13(loader, THREAD); | |
| 1410 } | |
| 1411 if (HAS_PENDING_EXCEPTION) { | |
| 1412 if (PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
| 1413 CLEAR_PENDING_EXCEPTION; | |
| 1414 tty->print_cr("\nCompileTheWorld : Ran out of memory\n"); | |
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1415 tty->print_cr("Increase class metadata storage if a limit was set"); |
| 0 | 1416 } else { |
| 1417 tty->print_cr("\nCompileTheWorld : Unexpected exception occurred\n"); | |
| 1418 } | |
| 1419 } | |
| 1420 } | |
| 1421 | |
| 1422 // Version that works for JDK 1.3.x | |
| 1423 void ClassPathZipEntry::compile_the_world13(Handle loader, TRAPS) { | |
| 1424 real_jzfile13* zip = (real_jzfile13*) _zip; | |
| 1425 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
| 1426 tty->cr(); | |
| 1427 // Iterate over all entries in zip file | |
| 1428 for (int n = 0; ; n++) { | |
| 1429 real_jzentry13 * ze = (real_jzentry13 *)((*GetNextEntry)(_zip, n)); | |
| 1430 if (ze == NULL) break; | |
| 1431 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
| 1432 } | |
| 1433 } | |
| 1434 | |
| 1435 | |
| 1436 // Version that works for JDK 1.2.x | |
| 1437 void ClassPathZipEntry::compile_the_world12(Handle loader, TRAPS) { | |
| 1438 real_jzfile12* zip = (real_jzfile12*) _zip; | |
| 1439 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
| 1440 tty->cr(); | |
| 1441 // Iterate over all entries in zip file | |
| 1442 for (int n = 0; ; n++) { | |
| 1443 real_jzentry12 * ze = (real_jzentry12 *)((*GetNextEntry)(_zip, n)); | |
| 1444 if (ze == NULL) break; | |
| 1445 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
| 1446 } | |
| 1447 } | |
| 1448 | |
| 1449 bool ClassPathZipEntry::is_rt_jar() { | |
| 1450 if (JDK_Version::is_jdk12x_version()) { | |
| 1451 return is_rt_jar12(); | |
| 1452 } else { | |
| 1453 return is_rt_jar13(); | |
| 1454 } | |
| 1455 } | |
| 1456 | |
| 1457 // JDK 1.3 version | |
| 1458 bool ClassPathZipEntry::is_rt_jar13() { | |
| 1459 real_jzfile13* zip = (real_jzfile13*) _zip; | |
| 1460 int len = (int)strlen(zip->name); | |
| 1461 // Check whether zip name ends in "rt.jar" | |
| 1462 // This will match other archives named rt.jar as well, but this is | |
| 1463 // only used for debugging. | |
| 1464 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
| 1465 } | |
| 1466 | |
| 1467 // JDK 1.2 version | |
| 1468 bool ClassPathZipEntry::is_rt_jar12() { | |
| 1469 real_jzfile12* zip = (real_jzfile12*) _zip; | |
| 1470 int len = (int)strlen(zip->name); | |
| 1471 // Check whether zip name ends in "rt.jar" | |
| 1472 // This will match other archives named rt.jar as well, but this is | |
| 1473 // only used for debugging. | |
| 1474 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
| 1475 } | |
| 1476 | |
| 1477 void LazyClassPathEntry::compile_the_world(Handle loader, TRAPS) { | |
|
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1478 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1479 if (cpe != NULL) { |
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1480 cpe->compile_the_world(loader, CHECK); |
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1481 } |
| 0 | 1482 } |
| 1483 | |
| 1484 bool LazyClassPathEntry::is_rt_jar() { | |
|
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1485 Thread* THREAD = Thread::current(); |
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1486 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1487 return (cpe != NULL) ? cpe->is_jar_file() : false; |
| 0 | 1488 } |
| 1489 | |
| 1490 void ClassLoader::compile_the_world() { | |
| 1491 EXCEPTION_MARK; | |
| 1492 HandleMark hm(THREAD); | |
| 1493 ResourceMark rm(THREAD); | |
| 1494 // Make sure we don't run with background compilation | |
| 1495 BackgroundCompilation = false; | |
| 1496 // Find bootstrap loader | |
| 1497 Handle system_class_loader (THREAD, SystemDictionary::java_system_loader()); | |
| 1498 // Iterate over all bootstrap class path entries | |
| 1499 ClassPathEntry* e = _first_entry; | |
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1500 jlong start = os::javaTimeMillis(); |
| 0 | 1501 while (e != NULL) { |
| 1502 // We stop at rt.jar, unless it is the first bootstrap path entry | |
| 1503 if (e->is_rt_jar() && e != _first_entry) break; | |
| 1504 e->compile_the_world(system_class_loader, CATCH); | |
| 1505 e = e->next(); | |
| 1506 } | |
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1507 jlong end = os::javaTimeMillis(); |
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1508 tty->print_cr("CompileTheWorld : Done (%d classes, %d methods, " JLONG_FORMAT " ms)", |
|
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1509 _compile_the_world_class_counter, _compile_the_world_method_counter, (end - start)); |
| 0 | 1510 { |
| 1511 // Print statistics as if before normal exit: | |
| 1512 extern void print_statistics(); | |
| 1513 print_statistics(); | |
| 1514 } | |
| 1515 vm_exit(0); | |
| 1516 } | |
| 1517 | |
|
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1518 int ClassLoader::_compile_the_world_class_counter = 0; |
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1519 int ClassLoader::_compile_the_world_method_counter = 0; |
|
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1520 static int _codecache_sweep_counter = 0; |
| 0 | 1521 |
| 2257 | 1522 // Filter out all exceptions except OOMs |
| 1523 static void clear_pending_exception_if_not_oom(TRAPS) { | |
| 1524 if (HAS_PENDING_EXCEPTION && | |
| 1525 !PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
| 1526 CLEAR_PENDING_EXCEPTION; | |
| 1527 } | |
| 1528 // The CHECK at the caller will propagate the exception out | |
| 1529 } | |
| 1530 | |
|
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1531 /** |
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1532 * Returns if the given method should be compiled when doing compile-the-world. |
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1533 * |
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1534 * TODO: This should be a private method in a CompileTheWorld class. |
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1535 */ |
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1536 static bool can_be_compiled(methodHandle m, int comp_level) { |
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1537 assert(CompileTheWorld, "must be"); |
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1538 |
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1539 // It's not valid to compile a native wrapper for MethodHandle methods |
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1540 // that take a MemberName appendix since the bytecode signature is not |
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1541 // correct. |
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1542 vmIntrinsics::ID iid = m->intrinsic_id(); |
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1543 if (MethodHandles::is_signature_polymorphic(iid) && MethodHandles::has_member_arg(iid)) { |
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1544 return false; |
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1545 } |
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1546 |
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1547 return CompilationPolicy::can_be_compiled(m, comp_level); |
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1548 } |
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1549 |
| 0 | 1550 void ClassLoader::compile_the_world_in(char* name, Handle loader, TRAPS) { |
| 1551 int len = (int)strlen(name); | |
| 1552 if (len > 6 && strcmp(".class", name + len - 6) == 0) { | |
| 1553 // We have a .class file | |
| 1554 char buffer[2048]; | |
| 1555 strncpy(buffer, name, len - 6); | |
| 1556 buffer[len-6] = 0; | |
| 1557 // If the file has a period after removing .class, it's not really a | |
| 1558 // valid class file. The class loader will check everything else. | |
| 1559 if (strchr(buffer, '.') == NULL) { | |
|
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1560 _compile_the_world_class_counter++; |
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1561 if (_compile_the_world_class_counter > CompileTheWorldStopAt) return; |
| 723 | 1562 |
| 1563 // Construct name without extension | |
|
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1564 TempNewSymbol sym = SymbolTable::new_symbol(buffer, CHECK); |
| 723 | 1565 // Use loader to load and initialize class |
|
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1566 Klass* ik = SystemDictionary::resolve_or_null(sym, loader, Handle(), THREAD); |
| 723 | 1567 instanceKlassHandle k (THREAD, ik); |
| 1568 if (k.not_null() && !HAS_PENDING_EXCEPTION) { | |
| 1569 k->initialize(THREAD); | |
| 1570 } | |
| 1571 bool exception_occurred = HAS_PENDING_EXCEPTION; | |
| 2257 | 1572 clear_pending_exception_if_not_oom(CHECK); |
| 723 | 1573 if (CompileTheWorldPreloadClasses && k.not_null()) { |
|
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1574 ConstantPool::preload_and_initialize_all_classes(k->constants(), THREAD); |
| 723 | 1575 if (HAS_PENDING_EXCEPTION) { |
| 1576 // If something went wrong in preloading we just ignore it | |
| 2257 | 1577 clear_pending_exception_if_not_oom(CHECK); |
|
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1578 tty->print_cr("Preloading failed for (%d) %s", _compile_the_world_class_counter, buffer); |
| 0 | 1579 } |
| 723 | 1580 } |
| 1581 | |
|
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1582 if (_compile_the_world_class_counter >= CompileTheWorldStartAt) { |
|
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1583 if (k.is_null() || exception_occurred) { |
| 0 | 1584 // If something went wrong (e.g. ExceptionInInitializerError) we skip this class |
|
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1585 tty->print_cr("CompileTheWorld (%d) : Skipping %s", _compile_the_world_class_counter, buffer); |
| 0 | 1586 } else { |
|
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1587 tty->print_cr("CompileTheWorld (%d) : %s", _compile_the_world_class_counter, buffer); |
| 0 | 1588 // Preload all classes to get around uncommon traps |
| 1589 // Iterate over all methods in class | |
|
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1590 int comp_level = CompilationPolicy::policy()->initial_compile_level(); |
| 0 | 1591 for (int n = 0; n < k->methods()->length(); n++) { |
|
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1592 methodHandle m (THREAD, k->methods()->at(n)); |
|
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1593 if (can_be_compiled(m, comp_level)) { |
|
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1594 if (++_codecache_sweep_counter == CompileTheWorldSafepointInterval) { |
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1595 // Give sweeper a chance to keep up with CTW |
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1596 VM_ForceSafepoint op; |
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1597 VMThread::execute(&op); |
|
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1598 _codecache_sweep_counter = 0; |
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1599 } |
| 0 | 1600 // Force compilation |
|
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1601 CompileBroker::compile_method(m, InvocationEntryBci, comp_level, |
| 0 | 1602 methodHandle(), 0, "CTW", THREAD); |
| 1603 if (HAS_PENDING_EXCEPTION) { | |
| 2257 | 1604 clear_pending_exception_if_not_oom(CHECK); |
|
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1605 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
|
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1606 } else { |
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1607 _compile_the_world_method_counter++; |
| 0 | 1608 } |
|
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|
1609 if (TieredCompilation && TieredStopAtLevel >= CompLevel_full_optimization) { |
| 723 | 1610 // Clobber the first compile and force second tier compilation |
| 1611 nmethod* nm = m->code(); | |
|
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1612 if (nm != NULL && !m->is_method_handle_intrinsic()) { |
| 723 | 1613 // Throw out the code so that the code cache doesn't fill up |
| 1614 nm->make_not_entrant(); | |
| 1615 m->clear_code(); | |
| 1616 } | |
| 1783 | 1617 CompileBroker::compile_method(m, InvocationEntryBci, CompLevel_full_optimization, |
| 723 | 1618 methodHandle(), 0, "CTW", THREAD); |
| 1619 if (HAS_PENDING_EXCEPTION) { | |
| 2257 | 1620 clear_pending_exception_if_not_oom(CHECK); |
|
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1621 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
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1622 } else { |
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1623 _compile_the_world_method_counter++; |
| 723 | 1624 } |
| 0 | 1625 } |
|
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1626 } else { |
|
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1627 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
| 0 | 1628 } |
| 723 | 1629 |
| 1630 nmethod* nm = m->code(); | |
|
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1631 if (nm != NULL && !m->is_method_handle_intrinsic()) { |
| 723 | 1632 // Throw out the code so that the code cache doesn't fill up |
| 1633 nm->make_not_entrant(); | |
| 1634 m->clear_code(); | |
| 0 | 1635 } |
| 1636 } | |
| 1637 } | |
| 1638 } | |
| 1639 } | |
| 1640 } | |
| 1641 } | |
| 1642 | |
| 1643 #endif //PRODUCT | |
|
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1644 |
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1645 // Please keep following two functions at end of this file. With them placed at top or in middle of the file, |
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1980
diff
changeset
|
1646 // 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
|
1647 void PerfClassTraceTime::initialize() { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1648 if (!UsePerfData) return; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1649 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1650 if (_eventp != NULL) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1651 // increment the event counter |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1652 _eventp->inc(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1653 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1654 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1655 // stop the current active thread-local timer to measure inclusive time |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1656 _prev_active_event = -1; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1657 for (int i=0; i < EVENT_TYPE_COUNT; i++) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1658 if (_timers[i].is_active()) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1659 assert(_prev_active_event == -1, "should have only one active timer"); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1660 _prev_active_event = i; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1661 _timers[i].stop(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1662 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1663 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1664 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1665 if (_recursion_counters == NULL || (_recursion_counters[_event_type])++ == 0) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1666 // start the inclusive timer if not recursively called |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1667 _t.start(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1668 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1669 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1670 // start thread-local timer of the given event type |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1671 if (!_timers[_event_type].is_active()) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1672 _timers[_event_type].start(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1673 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1674 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1675 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1676 PerfClassTraceTime::~PerfClassTraceTime() { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1677 if (!UsePerfData) return; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1678 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1679 // stop the thread-local timer as the event completes |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1680 // 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
|
1681 _timers[_event_type].stop(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1682 jlong selftime = _timers[_event_type].ticks(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1683 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1684 if (_prev_active_event >= 0) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1685 _timers[_prev_active_event].start(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1686 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1687 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1688 if (_recursion_counters != NULL && --(_recursion_counters[_event_type]) > 0) return; |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1689 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1690 // increment the counters only on the leaf call |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1691 _t.stop(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1692 _timep->inc(_t.ticks()); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1693 if (_selftimep != NULL) { |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1694 _selftimep->inc(selftime); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1695 } |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1696 // 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
|
1697 ClassLoader::perf_accumulated_time()->inc(selftime); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1698 |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1699 // reset the timer |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1700 _timers[_event_type].reset(); |
|
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1701 } |