Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/classLoader.cpp @ 17839:5cf196cc5405
8026334: hs_err improvement: Print elapsed time in a humanly readable format
Reviewed-by: coleenp, dsamersoff
Contributed-by: masato.yoshida@oracle.com
author | dbuck |
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date | Sat, 05 Apr 2014 23:38:24 -0700 |
parents | 2b8e28fdf503 |
children | d8041d695d19 78bbf4d43a14 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classFileParser.hpp" | |
27 #include "classfile/classFileStream.hpp" | |
28 #include "classfile/classLoader.hpp" | |
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29 #include "classfile/classLoaderData.inline.hpp" |
1972 | 30 #include "classfile/javaClasses.hpp" |
31 #include "classfile/systemDictionary.hpp" | |
32 #include "classfile/vmSymbols.hpp" | |
33 #include "compiler/compileBroker.hpp" | |
34 #include "gc_interface/collectedHeap.inline.hpp" | |
35 #include "interpreter/bytecodeStream.hpp" | |
36 #include "interpreter/oopMapCache.hpp" | |
37 #include "memory/allocation.inline.hpp" | |
38 #include "memory/generation.hpp" | |
39 #include "memory/oopFactory.hpp" | |
40 #include "memory/universe.inline.hpp" | |
41 #include "oops/instanceKlass.hpp" | |
42 #include "oops/instanceRefKlass.hpp" | |
43 #include "oops/oop.inline.hpp" | |
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44 #include "oops/symbol.hpp" |
1972 | 45 #include "prims/jvm_misc.hpp" |
46 #include "runtime/arguments.hpp" | |
47 #include "runtime/compilationPolicy.hpp" | |
48 #include "runtime/fprofiler.hpp" | |
49 #include "runtime/handles.hpp" | |
50 #include "runtime/handles.inline.hpp" | |
51 #include "runtime/init.hpp" | |
52 #include "runtime/interfaceSupport.hpp" | |
53 #include "runtime/java.hpp" | |
54 #include "runtime/javaCalls.hpp" | |
55 #include "runtime/threadCritical.hpp" | |
56 #include "runtime/timer.hpp" | |
57 #include "services/management.hpp" | |
58 #include "services/threadService.hpp" | |
59 #include "utilities/events.hpp" | |
60 #include "utilities/hashtable.hpp" | |
61 #include "utilities/hashtable.inline.hpp" | |
62 #ifdef TARGET_OS_FAMILY_linux | |
63 # include "os_linux.inline.hpp" | |
64 #endif | |
65 #ifdef TARGET_OS_FAMILY_solaris | |
66 # include "os_solaris.inline.hpp" | |
67 #endif | |
68 #ifdef TARGET_OS_FAMILY_windows | |
69 # include "os_windows.inline.hpp" | |
70 #endif | |
14411 | 71 #ifdef TARGET_OS_FAMILY_aix |
72 # include "os_aix.inline.hpp" | |
73 #endif | |
3960 | 74 #ifdef TARGET_OS_FAMILY_bsd |
75 # include "os_bsd.inline.hpp" | |
76 #endif | |
0 | 77 |
78 | |
79 // Entry points in zip.dll for loading zip/jar file entries | |
80 | |
81 typedef void * * (JNICALL *ZipOpen_t)(const char *name, char **pmsg); | |
82 typedef void (JNICALL *ZipClose_t)(jzfile *zip); | |
83 typedef jzentry* (JNICALL *FindEntry_t)(jzfile *zip, const char *name, jint *sizeP, jint *nameLen); | |
84 typedef jboolean (JNICALL *ReadEntry_t)(jzfile *zip, jzentry *entry, unsigned char *buf, char *namebuf); | |
85 typedef jboolean (JNICALL *ReadMappedEntry_t)(jzfile *zip, jzentry *entry, unsigned char **buf, char *namebuf); | |
86 typedef jzentry* (JNICALL *GetNextEntry_t)(jzfile *zip, jint n); | |
87 | |
88 static ZipOpen_t ZipOpen = NULL; | |
89 static ZipClose_t ZipClose = NULL; | |
90 static FindEntry_t FindEntry = NULL; | |
91 static ReadEntry_t ReadEntry = NULL; | |
92 static ReadMappedEntry_t ReadMappedEntry = NULL; | |
93 static GetNextEntry_t GetNextEntry = NULL; | |
94 static canonicalize_fn_t CanonicalizeEntry = NULL; | |
95 | |
96 // Globals | |
97 | |
98 PerfCounter* ClassLoader::_perf_accumulated_time = NULL; | |
99 PerfCounter* ClassLoader::_perf_classes_inited = NULL; | |
100 PerfCounter* ClassLoader::_perf_class_init_time = NULL; | |
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101 PerfCounter* ClassLoader::_perf_class_init_selftime = NULL; |
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102 PerfCounter* ClassLoader::_perf_classes_verified = NULL; |
0 | 103 PerfCounter* ClassLoader::_perf_class_verify_time = NULL; |
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104 PerfCounter* ClassLoader::_perf_class_verify_selftime = NULL; |
0 | 105 PerfCounter* ClassLoader::_perf_classes_linked = NULL; |
106 PerfCounter* ClassLoader::_perf_class_link_time = NULL; | |
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107 PerfCounter* ClassLoader::_perf_class_link_selftime = NULL; |
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108 PerfCounter* ClassLoader::_perf_class_parse_time = NULL; |
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109 PerfCounter* ClassLoader::_perf_class_parse_selftime = NULL; |
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110 PerfCounter* ClassLoader::_perf_sys_class_lookup_time = NULL; |
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111 PerfCounter* ClassLoader::_perf_shared_classload_time = NULL; |
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112 PerfCounter* ClassLoader::_perf_sys_classload_time = NULL; |
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113 PerfCounter* ClassLoader::_perf_app_classload_time = NULL; |
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114 PerfCounter* ClassLoader::_perf_app_classload_selftime = NULL; |
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115 PerfCounter* ClassLoader::_perf_app_classload_count = NULL; |
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116 PerfCounter* ClassLoader::_perf_define_appclasses = NULL; |
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117 PerfCounter* ClassLoader::_perf_define_appclass_time = NULL; |
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118 PerfCounter* ClassLoader::_perf_define_appclass_selftime = NULL; |
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119 PerfCounter* ClassLoader::_perf_app_classfile_bytes_read = NULL; |
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120 PerfCounter* ClassLoader::_perf_sys_classfile_bytes_read = NULL; |
0 | 121 PerfCounter* ClassLoader::_sync_systemLoaderLockContentionRate = NULL; |
122 PerfCounter* ClassLoader::_sync_nonSystemLoaderLockContentionRate = NULL; | |
123 PerfCounter* ClassLoader::_sync_JVMFindLoadedClassLockFreeCounter = NULL; | |
124 PerfCounter* ClassLoader::_sync_JVMDefineClassLockFreeCounter = NULL; | |
125 PerfCounter* ClassLoader::_sync_JNIDefineClassLockFreeCounter = NULL; | |
126 PerfCounter* ClassLoader::_unsafe_defineClassCallCounter = NULL; | |
127 PerfCounter* ClassLoader::_isUnsyncloadClass = NULL; | |
128 PerfCounter* ClassLoader::_load_instance_class_failCounter = NULL; | |
129 | |
130 ClassPathEntry* ClassLoader::_first_entry = NULL; | |
131 ClassPathEntry* ClassLoader::_last_entry = NULL; | |
132 PackageHashtable* ClassLoader::_package_hash_table = NULL; | |
133 | |
134 // helper routines | |
135 bool string_starts_with(const char* str, const char* str_to_find) { | |
136 size_t str_len = strlen(str); | |
137 size_t str_to_find_len = strlen(str_to_find); | |
138 if (str_to_find_len > str_len) { | |
139 return false; | |
140 } | |
141 return (strncmp(str, str_to_find, str_to_find_len) == 0); | |
142 } | |
143 | |
144 bool string_ends_with(const char* str, const char* str_to_find) { | |
145 size_t str_len = strlen(str); | |
146 size_t str_to_find_len = strlen(str_to_find); | |
147 if (str_to_find_len > str_len) { | |
148 return false; | |
149 } | |
150 return (strncmp(str + (str_len - str_to_find_len), str_to_find, str_to_find_len) == 0); | |
151 } | |
152 | |
153 | |
154 MetaIndex::MetaIndex(char** meta_package_names, int num_meta_package_names) { | |
155 if (num_meta_package_names == 0) { | |
156 _meta_package_names = NULL; | |
157 _num_meta_package_names = 0; | |
158 } else { | |
6197 | 159 _meta_package_names = NEW_C_HEAP_ARRAY(char*, num_meta_package_names, mtClass); |
0 | 160 _num_meta_package_names = num_meta_package_names; |
161 memcpy(_meta_package_names, meta_package_names, num_meta_package_names * sizeof(char*)); | |
162 } | |
163 } | |
164 | |
165 | |
166 MetaIndex::~MetaIndex() { | |
6197 | 167 FREE_C_HEAP_ARRAY(char*, _meta_package_names, mtClass); |
0 | 168 } |
169 | |
170 | |
171 bool MetaIndex::may_contain(const char* class_name) { | |
172 if ( _num_meta_package_names == 0) { | |
173 return false; | |
174 } | |
175 size_t class_name_len = strlen(class_name); | |
176 for (int i = 0; i < _num_meta_package_names; i++) { | |
177 char* pkg = _meta_package_names[i]; | |
178 size_t pkg_len = strlen(pkg); | |
179 size_t min_len = MIN2(class_name_len, pkg_len); | |
180 if (!strncmp(class_name, pkg, min_len)) { | |
181 return true; | |
182 } | |
183 } | |
184 return false; | |
185 } | |
186 | |
187 | |
188 ClassPathEntry::ClassPathEntry() { | |
189 set_next(NULL); | |
190 } | |
191 | |
192 | |
193 bool ClassPathEntry::is_lazy() { | |
194 return false; | |
195 } | |
196 | |
197 ClassPathDirEntry::ClassPathDirEntry(char* dir) : ClassPathEntry() { | |
6197 | 198 _dir = NEW_C_HEAP_ARRAY(char, strlen(dir)+1, mtClass); |
0 | 199 strcpy(_dir, dir); |
200 } | |
201 | |
202 | |
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203 ClassFileStream* ClassPathDirEntry::open_stream(const char* name, TRAPS) { |
0 | 204 // construct full path name |
205 char path[JVM_MAXPATHLEN]; | |
206 if (jio_snprintf(path, sizeof(path), "%s%s%s", _dir, os::file_separator(), name) == -1) { | |
207 return NULL; | |
208 } | |
209 // check if file exists | |
210 struct stat st; | |
211 if (os::stat(path, &st) == 0) { | |
212 // found file, open it | |
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213 int file_handle = os::open(path, 0, 0); |
0 | 214 if (file_handle != -1) { |
215 // read contents into resource array | |
216 u1* buffer = NEW_RESOURCE_ARRAY(u1, st.st_size); | |
217 size_t num_read = os::read(file_handle, (char*) buffer, st.st_size); | |
218 // close file | |
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219 os::close(file_handle); |
0 | 220 // construct ClassFileStream |
221 if (num_read == (size_t)st.st_size) { | |
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222 if (UsePerfData) { |
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223 ClassLoader::perf_sys_classfile_bytes_read()->inc(num_read); |
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224 } |
0 | 225 return new ClassFileStream(buffer, st.st_size, _dir); // Resource allocated |
226 } | |
227 } | |
228 } | |
229 return NULL; | |
230 } | |
231 | |
232 | |
233 ClassPathZipEntry::ClassPathZipEntry(jzfile* zip, const char* zip_name) : ClassPathEntry() { | |
234 _zip = zip; | |
6197 | 235 _zip_name = NEW_C_HEAP_ARRAY(char, strlen(zip_name)+1, mtClass); |
0 | 236 strcpy(_zip_name, zip_name); |
237 } | |
238 | |
239 ClassPathZipEntry::~ClassPathZipEntry() { | |
240 if (ZipClose != NULL) { | |
241 (*ZipClose)(_zip); | |
242 } | |
6197 | 243 FREE_C_HEAP_ARRAY(char, _zip_name, mtClass); |
0 | 244 } |
245 | |
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246 ClassFileStream* ClassPathZipEntry::open_stream(const char* name, TRAPS) { |
0 | 247 // enable call to C land |
248 JavaThread* thread = JavaThread::current(); | |
249 ThreadToNativeFromVM ttn(thread); | |
250 // check whether zip archive contains name | |
251 jint filesize, name_len; | |
252 jzentry* entry = (*FindEntry)(_zip, name, &filesize, &name_len); | |
253 if (entry == NULL) return NULL; | |
254 u1* buffer; | |
255 char name_buf[128]; | |
256 char* filename; | |
257 if (name_len < 128) { | |
258 filename = name_buf; | |
259 } else { | |
260 filename = NEW_RESOURCE_ARRAY(char, name_len + 1); | |
261 } | |
262 | |
263 // file found, get pointer to class in mmaped jar file. | |
264 if (ReadMappedEntry == NULL || | |
265 !(*ReadMappedEntry)(_zip, entry, &buffer, filename)) { | |
266 // mmaped access not available, perhaps due to compression, | |
267 // read contents into resource array | |
268 buffer = NEW_RESOURCE_ARRAY(u1, filesize); | |
269 if (!(*ReadEntry)(_zip, entry, buffer, filename)) return NULL; | |
270 } | |
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271 if (UsePerfData) { |
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272 ClassLoader::perf_sys_classfile_bytes_read()->inc(filesize); |
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273 } |
0 | 274 // return result |
275 return new ClassFileStream(buffer, filesize, _zip_name); // Resource allocated | |
276 } | |
277 | |
278 // invoke function for each entry in the zip file | |
279 void ClassPathZipEntry::contents_do(void f(const char* name, void* context), void* context) { | |
280 JavaThread* thread = JavaThread::current(); | |
281 HandleMark handle_mark(thread); | |
282 ThreadToNativeFromVM ttn(thread); | |
283 for (int n = 0; ; n++) { | |
284 jzentry * ze = ((*GetNextEntry)(_zip, n)); | |
285 if (ze == NULL) break; | |
286 (*f)(ze->name, context); | |
287 } | |
288 } | |
289 | |
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290 LazyClassPathEntry::LazyClassPathEntry(char* path, const struct stat* st) : ClassPathEntry() { |
0 | 291 _path = strdup(path); |
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292 _st = *st; |
0 | 293 _meta_index = NULL; |
294 _resolved_entry = NULL; | |
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295 _has_error = false; |
0 | 296 } |
297 | |
298 bool LazyClassPathEntry::is_jar_file() { | |
299 return ((_st.st_mode & S_IFREG) == S_IFREG); | |
300 } | |
301 | |
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302 ClassPathEntry* LazyClassPathEntry::resolve_entry(TRAPS) { |
0 | 303 if (_resolved_entry != NULL) { |
304 return (ClassPathEntry*) _resolved_entry; | |
305 } | |
306 ClassPathEntry* new_entry = NULL; | |
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307 new_entry = ClassLoader::create_class_path_entry(_path, &_st, false, CHECK_NULL); |
0 | 308 { |
309 ThreadCritical tc; | |
310 if (_resolved_entry == NULL) { | |
311 _resolved_entry = new_entry; | |
312 return new_entry; | |
313 } | |
314 } | |
315 assert(_resolved_entry != NULL, "bug in MT-safe resolution logic"); | |
316 delete new_entry; | |
317 return (ClassPathEntry*) _resolved_entry; | |
318 } | |
319 | |
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320 ClassFileStream* LazyClassPathEntry::open_stream(const char* name, TRAPS) { |
0 | 321 if (_meta_index != NULL && |
322 !_meta_index->may_contain(name)) { | |
323 return NULL; | |
324 } | |
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325 if (_has_error) { |
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326 return NULL; |
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327 } |
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328 ClassPathEntry* cpe = resolve_entry(THREAD); |
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329 if (cpe == NULL) { |
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330 _has_error = true; |
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331 return NULL; |
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332 } else { |
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333 return cpe->open_stream(name, THREAD); |
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334 } |
0 | 335 } |
336 | |
337 bool LazyClassPathEntry::is_lazy() { | |
338 return true; | |
339 } | |
340 | |
341 static void print_meta_index(LazyClassPathEntry* entry, | |
342 GrowableArray<char*>& meta_packages) { | |
343 tty->print("[Meta index for %s=", entry->name()); | |
344 for (int i = 0; i < meta_packages.length(); i++) { | |
345 if (i > 0) tty->print(" "); | |
346 tty->print(meta_packages.at(i)); | |
347 } | |
348 tty->print_cr("]"); | |
349 } | |
350 | |
351 | |
352 void ClassLoader::setup_meta_index() { | |
353 // Set up meta index which allows us to open boot jars lazily if | |
354 // class data sharing is enabled | |
355 const char* known_version = "% VERSION 2"; | |
356 char* meta_index_path = Arguments::get_meta_index_path(); | |
357 char* meta_index_dir = Arguments::get_meta_index_dir(); | |
358 FILE* file = fopen(meta_index_path, "r"); | |
359 int line_no = 0; | |
360 if (file != NULL) { | |
361 ResourceMark rm; | |
362 LazyClassPathEntry* cur_entry = NULL; | |
363 GrowableArray<char*> boot_class_path_packages(10); | |
364 char package_name[256]; | |
365 bool skipCurrentJar = false; | |
366 while (fgets(package_name, sizeof(package_name), file) != NULL) { | |
367 ++line_no; | |
368 // Remove trailing newline | |
369 package_name[strlen(package_name) - 1] = '\0'; | |
370 switch(package_name[0]) { | |
371 case '%': | |
372 { | |
373 if ((line_no == 1) && (strcmp(package_name, known_version) != 0)) { | |
374 if (TraceClassLoading && Verbose) { | |
375 tty->print("[Unsupported meta index version]"); | |
376 } | |
377 fclose(file); | |
378 return; | |
379 } | |
380 } | |
381 | |
382 // These directives indicate jar files which contain only | |
383 // classes, only non-classfile resources, or a combination of | |
384 // the two. See src/share/classes/sun/misc/MetaIndex.java and | |
385 // make/tools/MetaIndex/BuildMetaIndex.java in the J2SE | |
386 // workspace. | |
387 case '#': | |
388 case '!': | |
389 case '@': | |
390 { | |
391 // Hand off current packages to current lazy entry (if any) | |
392 if ((cur_entry != NULL) && | |
393 (boot_class_path_packages.length() > 0)) { | |
394 if (TraceClassLoading && Verbose) { | |
395 print_meta_index(cur_entry, boot_class_path_packages); | |
396 } | |
397 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
398 boot_class_path_packages.length()); | |
399 cur_entry->set_meta_index(index); | |
400 } | |
401 cur_entry = NULL; | |
402 boot_class_path_packages.clear(); | |
403 | |
404 // Find lazy entry corresponding to this jar file | |
405 for (ClassPathEntry* entry = _first_entry; entry != NULL; entry = entry->next()) { | |
406 if (entry->is_lazy() && | |
407 string_starts_with(entry->name(), meta_index_dir) && | |
408 string_ends_with(entry->name(), &package_name[2])) { | |
409 cur_entry = (LazyClassPathEntry*) entry; | |
410 break; | |
411 } | |
412 } | |
413 | |
414 // If the first character is '@', it indicates the following jar | |
415 // file is a resource only jar file in which case, we should skip | |
416 // reading the subsequent entries since the resource loading is | |
417 // totally handled by J2SE side. | |
418 if (package_name[0] == '@') { | |
419 if (cur_entry != NULL) { | |
420 cur_entry->set_meta_index(new MetaIndex(NULL, 0)); | |
421 } | |
422 cur_entry = NULL; | |
423 skipCurrentJar = true; | |
424 } else { | |
425 skipCurrentJar = false; | |
426 } | |
427 | |
428 break; | |
429 } | |
430 | |
431 default: | |
432 { | |
433 if (!skipCurrentJar && cur_entry != NULL) { | |
434 char* new_name = strdup(package_name); | |
435 boot_class_path_packages.append(new_name); | |
436 } | |
437 } | |
438 } | |
439 } | |
440 // Hand off current packages to current lazy entry (if any) | |
441 if ((cur_entry != NULL) && | |
442 (boot_class_path_packages.length() > 0)) { | |
443 if (TraceClassLoading && Verbose) { | |
444 print_meta_index(cur_entry, boot_class_path_packages); | |
445 } | |
446 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
447 boot_class_path_packages.length()); | |
448 cur_entry->set_meta_index(index); | |
449 } | |
450 fclose(file); | |
451 } | |
452 } | |
453 | |
454 void ClassLoader::setup_bootstrap_search_path() { | |
455 assert(_first_entry == NULL, "should not setup bootstrap class search path twice"); | |
456 char* sys_class_path = os::strdup(Arguments::get_sysclasspath()); | |
457 if (TraceClassLoading && Verbose) { | |
458 tty->print_cr("[Bootstrap loader class path=%s]", sys_class_path); | |
459 } | |
460 | |
461 int len = (int)strlen(sys_class_path); | |
462 int end = 0; | |
463 | |
464 // Iterate over class path entries | |
465 for (int start = 0; start < len; start = end) { | |
466 while (sys_class_path[end] && sys_class_path[end] != os::path_separator()[0]) { | |
467 end++; | |
468 } | |
6197 | 469 char* path = NEW_C_HEAP_ARRAY(char, end-start+1, mtClass); |
0 | 470 strncpy(path, &sys_class_path[start], end-start); |
471 path[end-start] = '\0'; | |
472 update_class_path_entry_list(path, false); | |
6197 | 473 FREE_C_HEAP_ARRAY(char, path, mtClass); |
0 | 474 while (sys_class_path[end] == os::path_separator()[0]) { |
475 end++; | |
476 } | |
477 } | |
478 } | |
479 | |
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480 ClassPathEntry* ClassLoader::create_class_path_entry(char *path, const struct stat* st, bool lazy, TRAPS) { |
0 | 481 JavaThread* thread = JavaThread::current(); |
482 if (lazy) { | |
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483 return new LazyClassPathEntry(path, st); |
0 | 484 } |
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485 ClassPathEntry* new_entry = NULL; |
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486 if ((st->st_mode & S_IFREG) == S_IFREG) { |
0 | 487 // Regular file, should be a zip file |
488 // Canonicalized filename | |
489 char canonical_path[JVM_MAXPATHLEN]; | |
490 if (!get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) { | |
491 // This matches the classic VM | |
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492 THROW_MSG_(vmSymbols::java_io_IOException(), "Bad pathname", NULL); |
0 | 493 } |
494 char* error_msg = NULL; | |
495 jzfile* zip; | |
496 { | |
497 // enable call to C land | |
498 ThreadToNativeFromVM ttn(thread); | |
499 HandleMark hm(thread); | |
500 zip = (*ZipOpen)(canonical_path, &error_msg); | |
501 } | |
502 if (zip != NULL && error_msg == NULL) { | |
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503 new_entry = new ClassPathZipEntry(zip, path); |
0 | 504 if (TraceClassLoading) { |
505 tty->print_cr("[Opened %s]", path); | |
506 } | |
507 } else { | |
508 ResourceMark rm(thread); | |
509 char *msg; | |
510 if (error_msg == NULL) { | |
511 msg = NEW_RESOURCE_ARRAY(char, strlen(path) + 128); ; | |
512 jio_snprintf(msg, strlen(path) + 127, "error in opening JAR file %s", path); | |
513 } else { | |
514 int len = (int)(strlen(path) + strlen(error_msg) + 128); | |
515 msg = NEW_RESOURCE_ARRAY(char, len); ; | |
516 jio_snprintf(msg, len - 1, "error in opening JAR file <%s> %s", error_msg, path); | |
517 } | |
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518 THROW_MSG_(vmSymbols::java_lang_ClassNotFoundException(), msg, NULL); |
0 | 519 } |
520 } else { | |
521 // Directory | |
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522 new_entry = new ClassPathDirEntry(path); |
0 | 523 if (TraceClassLoading) { |
524 tty->print_cr("[Path %s]", path); | |
525 } | |
526 } | |
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527 return new_entry; |
0 | 528 } |
529 | |
530 | |
531 // Create a class path zip entry for a given path (return NULL if not found | |
532 // or zip/JAR file cannot be opened) | |
533 ClassPathZipEntry* ClassLoader::create_class_path_zip_entry(const char *path) { | |
534 // check for a regular file | |
535 struct stat st; | |
536 if (os::stat(path, &st) == 0) { | |
537 if ((st.st_mode & S_IFREG) == S_IFREG) { | |
538 char orig_path[JVM_MAXPATHLEN]; | |
539 char canonical_path[JVM_MAXPATHLEN]; | |
540 | |
541 strcpy(orig_path, path); | |
542 if (get_canonical_path(orig_path, canonical_path, JVM_MAXPATHLEN)) { | |
543 char* error_msg = NULL; | |
544 jzfile* zip; | |
545 { | |
546 // enable call to C land | |
547 JavaThread* thread = JavaThread::current(); | |
548 ThreadToNativeFromVM ttn(thread); | |
549 HandleMark hm(thread); | |
550 zip = (*ZipOpen)(canonical_path, &error_msg); | |
551 } | |
552 if (zip != NULL && error_msg == NULL) { | |
553 // create using canonical path | |
554 return new ClassPathZipEntry(zip, canonical_path); | |
555 } | |
556 } | |
557 } | |
558 } | |
559 return NULL; | |
560 } | |
561 | |
562 // returns true if entry already on class path | |
563 bool ClassLoader::contains_entry(ClassPathEntry *entry) { | |
564 ClassPathEntry* e = _first_entry; | |
565 while (e != NULL) { | |
566 // assume zip entries have been canonicalized | |
567 if (strcmp(entry->name(), e->name()) == 0) { | |
568 return true; | |
569 } | |
570 e = e->next(); | |
571 } | |
572 return false; | |
573 } | |
574 | |
575 void ClassLoader::add_to_list(ClassPathEntry *new_entry) { | |
576 if (new_entry != NULL) { | |
577 if (_last_entry == NULL) { | |
578 _first_entry = _last_entry = new_entry; | |
579 } else { | |
580 _last_entry->set_next(new_entry); | |
581 _last_entry = new_entry; | |
582 } | |
583 } | |
584 } | |
585 | |
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586 void ClassLoader::update_class_path_entry_list(char *path, |
0 | 587 bool check_for_duplicates) { |
588 struct stat st; | |
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589 if (os::stat(path, &st) == 0) { |
0 | 590 // File or directory found |
591 ClassPathEntry* new_entry = NULL; | |
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592 Thread* THREAD = Thread::current(); |
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593 new_entry = create_class_path_entry(path, &st, LazyBootClassLoader, CHECK); |
0 | 594 // The kernel VM adds dynamically to the end of the classloader path and |
595 // doesn't reorder the bootclasspath which would break java.lang.Package | |
596 // (see PackageInfo). | |
597 // Add new entry to linked list | |
598 if (!check_for_duplicates || !contains_entry(new_entry)) { | |
599 add_to_list(new_entry); | |
600 } | |
601 } | |
602 } | |
603 | |
604 void ClassLoader::print_bootclasspath() { | |
605 ClassPathEntry* e = _first_entry; | |
606 tty->print("[bootclasspath= "); | |
607 while (e != NULL) { | |
608 tty->print("%s ;", e->name()); | |
609 e = e->next(); | |
610 } | |
611 tty->print_cr("]"); | |
612 } | |
613 | |
614 void ClassLoader::load_zip_library() { | |
615 assert(ZipOpen == NULL, "should not load zip library twice"); | |
616 // First make sure native library is loaded | |
617 os::native_java_library(); | |
618 // Load zip library | |
619 char path[JVM_MAXPATHLEN]; | |
620 char ebuf[1024]; | |
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621 void* handle = NULL; |
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622 if (os::dll_build_name(path, sizeof(path), Arguments::get_dll_dir(), "zip")) { |
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623 handle = os::dll_load(path, ebuf, sizeof ebuf); |
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624 } |
0 | 625 if (handle == NULL) { |
626 vm_exit_during_initialization("Unable to load ZIP library", path); | |
627 } | |
628 // Lookup zip entry points | |
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629 ZipOpen = CAST_TO_FN_PTR(ZipOpen_t, os::dll_lookup(handle, "ZIP_Open")); |
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630 ZipClose = CAST_TO_FN_PTR(ZipClose_t, os::dll_lookup(handle, "ZIP_Close")); |
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631 FindEntry = CAST_TO_FN_PTR(FindEntry_t, os::dll_lookup(handle, "ZIP_FindEntry")); |
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632 ReadEntry = CAST_TO_FN_PTR(ReadEntry_t, os::dll_lookup(handle, "ZIP_ReadEntry")); |
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633 ReadMappedEntry = CAST_TO_FN_PTR(ReadMappedEntry_t, os::dll_lookup(handle, "ZIP_ReadMappedEntry")); |
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634 GetNextEntry = CAST_TO_FN_PTR(GetNextEntry_t, os::dll_lookup(handle, "ZIP_GetNextEntry")); |
0 | 635 |
636 // ZIP_Close is not exported on Windows in JDK5.0 so don't abort if ZIP_Close is NULL | |
637 if (ZipOpen == NULL || FindEntry == NULL || ReadEntry == NULL || GetNextEntry == NULL) { | |
638 vm_exit_during_initialization("Corrupted ZIP library", path); | |
639 } | |
640 | |
641 // Lookup canonicalize entry in libjava.dll | |
642 void *javalib_handle = os::native_java_library(); | |
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643 CanonicalizeEntry = CAST_TO_FN_PTR(canonicalize_fn_t, os::dll_lookup(javalib_handle, "Canonicalize")); |
0 | 644 // This lookup only works on 1.3. Do not check for non-null here |
645 } | |
646 | |
647 // PackageInfo data exists in order to support the java.lang.Package | |
648 // class. A Package object provides information about a java package | |
649 // (version, vendor, etc.) which originates in the manifest of the jar | |
650 // file supplying the package. For application classes, the ClassLoader | |
651 // object takes care of this. | |
652 | |
653 // For system (boot) classes, the Java code in the Package class needs | |
654 // to be able to identify which source jar file contained the boot | |
655 // class, so that it can extract the manifest from it. This table | |
656 // identifies java packages with jar files in the boot classpath. | |
657 | |
658 // Because the boot classpath cannot change, the classpath index is | |
659 // sufficient to identify the source jar file or directory. (Since | |
660 // directories have no manifests, the directory name is not required, | |
661 // but is available.) | |
662 | |
663 // When using sharing -- the pathnames of entries in the boot classpath | |
664 // may not be the same at runtime as they were when the archive was | |
665 // created (NFS, Samba, etc.). The actual files and directories named | |
666 // in the classpath must be the same files, in the same order, even | |
667 // though the exact name is not the same. | |
668 | |
6197 | 669 class PackageInfo: public BasicHashtableEntry<mtClass> { |
0 | 670 public: |
671 const char* _pkgname; // Package name | |
672 int _classpath_index; // Index of directory or JAR file loaded from | |
673 | |
674 PackageInfo* next() { | |
6197 | 675 return (PackageInfo*)BasicHashtableEntry<mtClass>::next(); |
0 | 676 } |
677 | |
678 const char* pkgname() { return _pkgname; } | |
679 void set_pkgname(char* pkgname) { _pkgname = pkgname; } | |
680 | |
681 const char* filename() { | |
682 return ClassLoader::classpath_entry(_classpath_index)->name(); | |
683 } | |
684 | |
685 void set_index(int index) { | |
686 _classpath_index = index; | |
687 } | |
688 }; | |
689 | |
690 | |
6197 | 691 class PackageHashtable : public BasicHashtable<mtClass> { |
0 | 692 private: |
693 inline unsigned int compute_hash(const char *s, int n) { | |
694 unsigned int val = 0; | |
695 while (--n >= 0) { | |
696 val = *s++ + 31 * val; | |
697 } | |
698 return val; | |
699 } | |
700 | |
701 PackageInfo* bucket(int index) { | |
6197 | 702 return (PackageInfo*)BasicHashtable<mtClass>::bucket(index); |
0 | 703 } |
704 | |
705 PackageInfo* get_entry(int index, unsigned int hash, | |
706 const char* pkgname, size_t n) { | |
707 for (PackageInfo* pp = bucket(index); pp != NULL; pp = pp->next()) { | |
708 if (pp->hash() == hash && | |
709 strncmp(pkgname, pp->pkgname(), n) == 0 && | |
710 pp->pkgname()[n] == '\0') { | |
711 return pp; | |
712 } | |
713 } | |
714 return NULL; | |
715 } | |
716 | |
717 public: | |
718 PackageHashtable(int table_size) | |
6197 | 719 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo)) {} |
0 | 720 |
6197 | 721 PackageHashtable(int table_size, HashtableBucket<mtClass>* t, int number_of_entries) |
722 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo), t, number_of_entries) {} | |
0 | 723 |
724 PackageInfo* get_entry(const char* pkgname, int n) { | |
725 unsigned int hash = compute_hash(pkgname, n); | |
726 return get_entry(hash_to_index(hash), hash, pkgname, n); | |
727 } | |
728 | |
729 PackageInfo* new_entry(char* pkgname, int n) { | |
730 unsigned int hash = compute_hash(pkgname, n); | |
731 PackageInfo* pp; | |
6197 | 732 pp = (PackageInfo*)BasicHashtable<mtClass>::new_entry(hash); |
0 | 733 pp->set_pkgname(pkgname); |
734 return pp; | |
735 } | |
736 | |
737 void add_entry(PackageInfo* pp) { | |
738 int index = hash_to_index(pp->hash()); | |
6197 | 739 BasicHashtable<mtClass>::add_entry(index, pp); |
0 | 740 } |
741 | |
742 void copy_pkgnames(const char** packages) { | |
743 int n = 0; | |
744 for (int i = 0; i < table_size(); ++i) { | |
745 for (PackageInfo* pp = bucket(i); pp != NULL; pp = pp->next()) { | |
746 packages[n++] = pp->pkgname(); | |
747 } | |
748 } | |
749 assert(n == number_of_entries(), "just checking"); | |
750 } | |
751 | |
752 void copy_table(char** top, char* end, PackageHashtable* table); | |
753 }; | |
754 | |
755 | |
756 void PackageHashtable::copy_table(char** top, char* end, | |
757 PackageHashtable* table) { | |
758 // Copy (relocate) the table to the shared space. | |
6197 | 759 BasicHashtable<mtClass>::copy_table(top, end); |
0 | 760 |
761 // Calculate the space needed for the package name strings. | |
762 int i; | |
763 int n = 0; | |
764 for (i = 0; i < table_size(); ++i) { | |
765 for (PackageInfo* pp = table->bucket(i); | |
766 pp != NULL; | |
767 pp = pp->next()) { | |
768 n += (int)(strlen(pp->pkgname()) + 1); | |
769 } | |
770 } | |
771 if (*top + n + sizeof(intptr_t) >= end) { | |
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772 report_out_of_shared_space(SharedMiscData); |
0 | 773 } |
774 | |
775 // Copy the table data (the strings) to the shared space. | |
776 n = align_size_up(n, sizeof(HeapWord)); | |
777 *(intptr_t*)(*top) = n; | |
778 *top += sizeof(intptr_t); | |
779 | |
780 for (i = 0; i < table_size(); ++i) { | |
781 for (PackageInfo* pp = table->bucket(i); | |
782 pp != NULL; | |
783 pp = pp->next()) { | |
784 int n1 = (int)(strlen(pp->pkgname()) + 1); | |
785 pp->set_pkgname((char*)memcpy(*top, pp->pkgname(), n1)); | |
786 *top += n1; | |
787 } | |
788 } | |
789 *top = (char*)align_size_up((intptr_t)*top, sizeof(HeapWord)); | |
790 } | |
791 | |
792 | |
793 void ClassLoader::copy_package_info_buckets(char** top, char* end) { | |
794 _package_hash_table->copy_buckets(top, end); | |
795 } | |
796 | |
797 void ClassLoader::copy_package_info_table(char** top, char* end) { | |
798 _package_hash_table->copy_table(top, end, _package_hash_table); | |
799 } | |
800 | |
801 | |
802 PackageInfo* ClassLoader::lookup_package(const char *pkgname) { | |
803 const char *cp = strrchr(pkgname, '/'); | |
804 if (cp != NULL) { | |
805 // Package prefix found | |
806 int n = cp - pkgname + 1; | |
807 return _package_hash_table->get_entry(pkgname, n); | |
808 } | |
809 return NULL; | |
810 } | |
811 | |
812 | |
813 bool ClassLoader::add_package(const char *pkgname, int classpath_index, TRAPS) { | |
814 assert(pkgname != NULL, "just checking"); | |
815 // Bootstrap loader no longer holds system loader lock obj serializing | |
816 // load_instance_class and thereby add_package | |
817 { | |
818 MutexLocker ml(PackageTable_lock, THREAD); | |
819 // First check for previously loaded entry | |
820 PackageInfo* pp = lookup_package(pkgname); | |
821 if (pp != NULL) { | |
822 // Existing entry found, check source of package | |
823 pp->set_index(classpath_index); | |
824 return true; | |
825 } | |
826 | |
827 const char *cp = strrchr(pkgname, '/'); | |
828 if (cp != NULL) { | |
829 // Package prefix found | |
830 int n = cp - pkgname + 1; | |
831 | |
6197 | 832 char* new_pkgname = NEW_C_HEAP_ARRAY(char, n + 1, mtClass); |
0 | 833 if (new_pkgname == NULL) { |
834 return false; | |
835 } | |
836 | |
837 memcpy(new_pkgname, pkgname, n); | |
838 new_pkgname[n] = '\0'; | |
839 pp = _package_hash_table->new_entry(new_pkgname, n); | |
840 pp->set_index(classpath_index); | |
841 | |
842 // Insert into hash table | |
843 _package_hash_table->add_entry(pp); | |
844 } | |
845 return true; | |
846 } | |
847 } | |
848 | |
849 | |
850 oop ClassLoader::get_system_package(const char* name, TRAPS) { | |
851 PackageInfo* pp; | |
852 { | |
853 MutexLocker ml(PackageTable_lock, THREAD); | |
854 pp = lookup_package(name); | |
855 } | |
856 if (pp == NULL) { | |
857 return NULL; | |
858 } else { | |
859 Handle p = java_lang_String::create_from_str(pp->filename(), THREAD); | |
860 return p(); | |
861 } | |
862 } | |
863 | |
864 | |
865 objArrayOop ClassLoader::get_system_packages(TRAPS) { | |
866 ResourceMark rm(THREAD); | |
867 int nof_entries; | |
868 const char** packages; | |
869 { | |
870 MutexLocker ml(PackageTable_lock, THREAD); | |
871 // Allocate resource char* array containing package names | |
872 nof_entries = _package_hash_table->number_of_entries(); | |
873 if ((packages = NEW_RESOURCE_ARRAY(const char*, nof_entries)) == NULL) { | |
874 return NULL; | |
875 } | |
876 _package_hash_table->copy_pkgnames(packages); | |
877 } | |
878 // Allocate objArray and fill with java.lang.String | |
1142 | 879 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 880 nof_entries, CHECK_0); |
881 objArrayHandle result(THREAD, r); | |
882 for (int i = 0; i < nof_entries; i++) { | |
883 Handle str = java_lang_String::create_from_str(packages[i], CHECK_0); | |
884 result->obj_at_put(i, str()); | |
885 } | |
886 | |
887 return result(); | |
888 } | |
889 | |
890 | |
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891 instanceKlassHandle ClassLoader::load_classfile(Symbol* h_name, TRAPS) { |
0 | 892 ResourceMark rm(THREAD); |
12002 | 893 EventMark m("loading class %s", h_name->as_C_string()); |
0 | 894 ThreadProfilerMark tpm(ThreadProfilerMark::classLoaderRegion); |
895 | |
896 stringStream st; | |
897 // st.print() uses too much stack space while handling a StackOverflowError | |
898 // st.print("%s.class", h_name->as_utf8()); | |
899 st.print_raw(h_name->as_utf8()); | |
900 st.print_raw(".class"); | |
901 char* name = st.as_string(); | |
902 | |
903 // Lookup stream for parsing .class file | |
904 ClassFileStream* stream = NULL; | |
905 int classpath_index = 0; | |
906 { | |
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907 PerfClassTraceTime vmtimer(perf_sys_class_lookup_time(), |
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908 ((JavaThread*) THREAD)->get_thread_stat()->perf_timers_addr(), |
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909 PerfClassTraceTime::CLASS_LOAD); |
0 | 910 ClassPathEntry* e = _first_entry; |
911 while (e != NULL) { | |
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912 stream = e->open_stream(name, CHECK_NULL); |
0 | 913 if (stream != NULL) { |
914 break; | |
915 } | |
916 e = e->next(); | |
917 ++classpath_index; | |
918 } | |
919 } | |
920 | |
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921 instanceKlassHandle h; |
0 | 922 if (stream != NULL) { |
923 | |
924 // class file found, parse it | |
925 ClassFileParser parser(stream); | |
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926 ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data(); |
0 | 927 Handle protection_domain; |
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928 TempNewSymbol parsed_name = NULL; |
0 | 929 instanceKlassHandle result = parser.parseClassFile(h_name, |
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930 loader_data, |
0 | 931 protection_domain, |
932 parsed_name, | |
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933 false, |
0 | 934 CHECK_(h)); |
935 | |
936 // add to package table | |
937 if (add_package(name, classpath_index, THREAD)) { | |
938 h = result; | |
939 } | |
940 } | |
941 | |
942 return h; | |
943 } | |
944 | |
945 | |
6197 | 946 void ClassLoader::create_package_info_table(HashtableBucket<mtClass> *t, int length, |
0 | 947 int number_of_entries) { |
948 assert(_package_hash_table == NULL, "One package info table allowed."); | |
6197 | 949 assert(length == package_hash_table_size * sizeof(HashtableBucket<mtClass>), |
0 | 950 "bad shared package info size."); |
951 _package_hash_table = new PackageHashtable(package_hash_table_size, t, | |
952 number_of_entries); | |
953 } | |
954 | |
955 | |
956 void ClassLoader::create_package_info_table() { | |
957 assert(_package_hash_table == NULL, "shouldn't have one yet"); | |
958 _package_hash_table = new PackageHashtable(package_hash_table_size); | |
959 } | |
960 | |
961 | |
962 // Initialize the class loader's access to methods in libzip. Parse and | |
963 // process the boot classpath into a list ClassPathEntry objects. Once | |
964 // this list has been created, it must not change order (see class PackageInfo) | |
965 // it can be appended to and is by jvmti and the kernel vm. | |
966 | |
967 void ClassLoader::initialize() { | |
968 assert(_package_hash_table == NULL, "should have been initialized by now."); | |
969 EXCEPTION_MARK; | |
970 | |
971 if (UsePerfData) { | |
972 // jvmstat performance counters | |
973 NEWPERFTICKCOUNTER(_perf_accumulated_time, SUN_CLS, "time"); | |
974 NEWPERFTICKCOUNTER(_perf_class_init_time, SUN_CLS, "classInitTime"); | |
875
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975 NEWPERFTICKCOUNTER(_perf_class_init_selftime, SUN_CLS, "classInitTime.self"); |
0 | 976 NEWPERFTICKCOUNTER(_perf_class_verify_time, SUN_CLS, "classVerifyTime"); |
875
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977 NEWPERFTICKCOUNTER(_perf_class_verify_selftime, SUN_CLS, "classVerifyTime.self"); |
0 | 978 NEWPERFTICKCOUNTER(_perf_class_link_time, SUN_CLS, "classLinkedTime"); |
875
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979 NEWPERFTICKCOUNTER(_perf_class_link_selftime, SUN_CLS, "classLinkedTime.self"); |
0 | 980 NEWPERFEVENTCOUNTER(_perf_classes_inited, SUN_CLS, "initializedClasses"); |
981 NEWPERFEVENTCOUNTER(_perf_classes_linked, SUN_CLS, "linkedClasses"); | |
875
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982 NEWPERFEVENTCOUNTER(_perf_classes_verified, SUN_CLS, "verifiedClasses"); |
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983 |
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984 NEWPERFTICKCOUNTER(_perf_class_parse_time, SUN_CLS, "parseClassTime"); |
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985 NEWPERFTICKCOUNTER(_perf_class_parse_selftime, SUN_CLS, "parseClassTime.self"); |
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986 NEWPERFTICKCOUNTER(_perf_sys_class_lookup_time, SUN_CLS, "lookupSysClassTime"); |
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987 NEWPERFTICKCOUNTER(_perf_shared_classload_time, SUN_CLS, "sharedClassLoadTime"); |
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988 NEWPERFTICKCOUNTER(_perf_sys_classload_time, SUN_CLS, "sysClassLoadTime"); |
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989 NEWPERFTICKCOUNTER(_perf_app_classload_time, SUN_CLS, "appClassLoadTime"); |
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990 NEWPERFTICKCOUNTER(_perf_app_classload_selftime, SUN_CLS, "appClassLoadTime.self"); |
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991 NEWPERFEVENTCOUNTER(_perf_app_classload_count, SUN_CLS, "appClassLoadCount"); |
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992 NEWPERFTICKCOUNTER(_perf_define_appclasses, SUN_CLS, "defineAppClasses"); |
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993 NEWPERFTICKCOUNTER(_perf_define_appclass_time, SUN_CLS, "defineAppClassTime"); |
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994 NEWPERFTICKCOUNTER(_perf_define_appclass_selftime, SUN_CLS, "defineAppClassTime.self"); |
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995 NEWPERFBYTECOUNTER(_perf_app_classfile_bytes_read, SUN_CLS, "appClassBytes"); |
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996 NEWPERFBYTECOUNTER(_perf_sys_classfile_bytes_read, SUN_CLS, "sysClassBytes"); |
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997 |
0 | 998 |
999 // The following performance counters are added for measuring the impact | |
1000 // of the bug fix of 6365597. They are mainly focused on finding out | |
1001 // the behavior of system & user-defined classloader lock, whether | |
1002 // ClassLoader.loadClass/findClass is being called synchronized or not. | |
1003 // Also two additional counters are created to see whether 'UnsyncloadClass' | |
1004 // flag is being set or not and how many times load_instance_class call | |
1005 // fails with linkageError etc. | |
1006 NEWPERFEVENTCOUNTER(_sync_systemLoaderLockContentionRate, SUN_CLS, | |
1007 "systemLoaderLockContentionRate"); | |
1008 NEWPERFEVENTCOUNTER(_sync_nonSystemLoaderLockContentionRate, SUN_CLS, | |
1009 "nonSystemLoaderLockContentionRate"); | |
1010 NEWPERFEVENTCOUNTER(_sync_JVMFindLoadedClassLockFreeCounter, SUN_CLS, | |
1011 "jvmFindLoadedClassNoLockCalls"); | |
1012 NEWPERFEVENTCOUNTER(_sync_JVMDefineClassLockFreeCounter, SUN_CLS, | |
1013 "jvmDefineClassNoLockCalls"); | |
1014 | |
1015 NEWPERFEVENTCOUNTER(_sync_JNIDefineClassLockFreeCounter, SUN_CLS, | |
1016 "jniDefineClassNoLockCalls"); | |
1017 | |
1018 NEWPERFEVENTCOUNTER(_unsafe_defineClassCallCounter, SUN_CLS, | |
1019 "unsafeDefineClassCalls"); | |
1020 | |
1021 NEWPERFEVENTCOUNTER(_isUnsyncloadClass, SUN_CLS, "isUnsyncloadClassSet"); | |
1022 NEWPERFEVENTCOUNTER(_load_instance_class_failCounter, SUN_CLS, | |
1023 "loadInstanceClassFailRate"); | |
1024 | |
1025 // increment the isUnsyncloadClass counter if UnsyncloadClass is set. | |
1026 if (UnsyncloadClass) { | |
1027 _isUnsyncloadClass->inc(); | |
1028 } | |
1029 } | |
1030 | |
1031 // lookup zip library entry points | |
1032 load_zip_library(); | |
1033 // initialize search path | |
1034 setup_bootstrap_search_path(); | |
1035 if (LazyBootClassLoader) { | |
1036 // set up meta index which makes boot classpath initialization lazier | |
1037 setup_meta_index(); | |
1038 } | |
1039 } | |
1040 | |
1041 | |
1042 jlong ClassLoader::classloader_time_ms() { | |
1043 return UsePerfData ? | |
1044 Management::ticks_to_ms(_perf_accumulated_time->get_value()) : -1; | |
1045 } | |
1046 | |
1047 jlong ClassLoader::class_init_count() { | |
1048 return UsePerfData ? _perf_classes_inited->get_value() : -1; | |
1049 } | |
1050 | |
1051 jlong ClassLoader::class_init_time_ms() { | |
1052 return UsePerfData ? | |
1053 Management::ticks_to_ms(_perf_class_init_time->get_value()) : -1; | |
1054 } | |
1055 | |
1056 jlong ClassLoader::class_verify_time_ms() { | |
1057 return UsePerfData ? | |
1058 Management::ticks_to_ms(_perf_class_verify_time->get_value()) : -1; | |
1059 } | |
1060 | |
1061 jlong ClassLoader::class_link_count() { | |
1062 return UsePerfData ? _perf_classes_linked->get_value() : -1; | |
1063 } | |
1064 | |
1065 jlong ClassLoader::class_link_time_ms() { | |
1066 return UsePerfData ? | |
1067 Management::ticks_to_ms(_perf_class_link_time->get_value()) : -1; | |
1068 } | |
1069 | |
1070 int ClassLoader::compute_Object_vtable() { | |
1071 // hardwired for JDK1.2 -- would need to duplicate class file parsing | |
1072 // code to determine actual value from file | |
1073 // Would be value '11' if finals were in vtable | |
1074 int JDK_1_2_Object_vtable_size = 5; | |
1075 return JDK_1_2_Object_vtable_size * vtableEntry::size(); | |
1076 } | |
1077 | |
1078 | |
1079 void classLoader_init() { | |
1080 ClassLoader::initialize(); | |
1081 } | |
1082 | |
1083 | |
1084 bool ClassLoader::get_canonical_path(char* orig, char* out, int len) { | |
1085 assert(orig != NULL && out != NULL && len > 0, "bad arguments"); | |
1086 if (CanonicalizeEntry != NULL) { | |
1087 JNIEnv* env = JavaThread::current()->jni_environment(); | |
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1088 if ((CanonicalizeEntry)(env, os::native_path(orig), out, len) < 0) { |
0 | 1089 return false; |
1090 } | |
1091 } else { | |
1092 // On JDK 1.2.2 the Canonicalize does not exist, so just do nothing | |
1093 strncpy(out, orig, len); | |
1094 out[len - 1] = '\0'; | |
1095 } | |
1096 return true; | |
1097 } | |
1098 | |
1099 #ifndef PRODUCT | |
1100 | |
1101 void ClassLoader::verify() { | |
1102 _package_hash_table->verify(); | |
1103 } | |
1104 | |
1105 | |
1106 // CompileTheWorld | |
1107 // | |
1108 // Iterates over all class path entries and forces compilation of all methods | |
1109 // in all classes found. Currently, only zip/jar archives are searched. | |
1110 // | |
1111 // The classes are loaded by the Java level bootstrap class loader, and the | |
1112 // initializer is called. If DelayCompilationDuringStartup is true (default), | |
1113 // the interpreter will run the initialization code. Note that forcing | |
1114 // initialization in this way could potentially lead to initialization order | |
1115 // problems, in which case we could just force the initialization bit to be set. | |
1116 | |
1117 | |
1118 // We need to iterate over the contents of a zip/jar file, so we replicate the | |
1119 // jzcell and jzfile definitions from zip_util.h but rename jzfile to real_jzfile, | |
1120 // since jzfile already has a void* definition. | |
1121 // | |
1122 // Note that this is only used in debug mode. | |
1123 // | |
1124 // HotSpot integration note: | |
1125 // Matches zip_util.h 1.14 99/06/01 from jdk1.3 beta H build | |
1126 | |
1127 | |
1128 // JDK 1.3 version | |
1129 typedef struct real_jzentry13 { /* Zip file entry */ | |
1130 char *name; /* entry name */ | |
1131 jint time; /* modification time */ | |
1132 jint size; /* size of uncompressed data */ | |
1133 jint csize; /* size of compressed data (zero if uncompressed) */ | |
1134 jint crc; /* crc of uncompressed data */ | |
1135 char *comment; /* optional zip file comment */ | |
1136 jbyte *extra; /* optional extra data */ | |
1137 jint pos; /* position of LOC header (if negative) or data */ | |
1138 } real_jzentry13; | |
1139 | |
1140 typedef struct real_jzfile13 { /* Zip file */ | |
1141 char *name; /* zip file name */ | |
1142 jint refs; /* number of active references */ | |
1143 jint fd; /* open file descriptor */ | |
1144 void *lock; /* read lock */ | |
1145 char *comment; /* zip file comment */ | |
1146 char *msg; /* zip error message */ | |
1147 void *entries; /* array of hash cells */ | |
1148 jint total; /* total number of entries */ | |
1149 unsigned short *table; /* Hash chain heads: indexes into entries */ | |
1150 jint tablelen; /* number of hash eads */ | |
1151 real_jzfile13 *next; /* next zip file in search list */ | |
1152 jzentry *cache; /* we cache the most recently freed jzentry */ | |
1153 /* Information on metadata names in META-INF directory */ | |
1154 char **metanames; /* array of meta names (may have null names) */ | |
1155 jint metacount; /* number of slots in metanames array */ | |
1156 /* If there are any per-entry comments, they are in the comments array */ | |
1157 char **comments; | |
1158 } real_jzfile13; | |
1159 | |
1160 // JDK 1.2 version | |
1161 typedef struct real_jzentry12 { /* Zip file entry */ | |
1162 char *name; /* entry name */ | |
1163 jint time; /* modification time */ | |
1164 jint size; /* size of uncompressed data */ | |
1165 jint csize; /* size of compressed data (zero if uncompressed) */ | |
1166 jint crc; /* crc of uncompressed data */ | |
1167 char *comment; /* optional zip file comment */ | |
1168 jbyte *extra; /* optional extra data */ | |
1169 jint pos; /* position of LOC header (if negative) or data */ | |
1170 struct real_jzentry12 *next; /* next entry in hash table */ | |
1171 } real_jzentry12; | |
1172 | |
1173 typedef struct real_jzfile12 { /* Zip file */ | |
1174 char *name; /* zip file name */ | |
1175 jint refs; /* number of active references */ | |
1176 jint fd; /* open file descriptor */ | |
1177 void *lock; /* read lock */ | |
1178 char *comment; /* zip file comment */ | |
1179 char *msg; /* zip error message */ | |
1180 real_jzentry12 *entries; /* array of zip entries */ | |
1181 jint total; /* total number of entries */ | |
1182 real_jzentry12 **table; /* hash table of entries */ | |
1183 jint tablelen; /* number of buckets */ | |
1184 jzfile *next; /* next zip file in search list */ | |
1185 } real_jzfile12; | |
1186 | |
1187 | |
1188 void ClassPathDirEntry::compile_the_world(Handle loader, TRAPS) { | |
1189 // For now we only compile all methods in all classes in zip/jar files | |
1190 tty->print_cr("CompileTheWorld : Skipped classes in %s", _dir); | |
1191 tty->cr(); | |
1192 } | |
1193 | |
1194 | |
1195 bool ClassPathDirEntry::is_rt_jar() { | |
1196 return false; | |
1197 } | |
1198 | |
1199 void ClassPathZipEntry::compile_the_world(Handle loader, TRAPS) { | |
1200 if (JDK_Version::is_jdk12x_version()) { | |
1201 compile_the_world12(loader, THREAD); | |
1202 } else { | |
1203 compile_the_world13(loader, THREAD); | |
1204 } | |
1205 if (HAS_PENDING_EXCEPTION) { | |
1206 if (PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
1207 CLEAR_PENDING_EXCEPTION; | |
1208 tty->print_cr("\nCompileTheWorld : Ran out of memory\n"); | |
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1209 tty->print_cr("Increase class metadata storage if a limit was set"); |
0 | 1210 } else { |
1211 tty->print_cr("\nCompileTheWorld : Unexpected exception occurred\n"); | |
1212 } | |
1213 } | |
1214 } | |
1215 | |
1216 // Version that works for JDK 1.3.x | |
1217 void ClassPathZipEntry::compile_the_world13(Handle loader, TRAPS) { | |
1218 real_jzfile13* zip = (real_jzfile13*) _zip; | |
1219 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
1220 tty->cr(); | |
1221 // Iterate over all entries in zip file | |
1222 for (int n = 0; ; n++) { | |
1223 real_jzentry13 * ze = (real_jzentry13 *)((*GetNextEntry)(_zip, n)); | |
1224 if (ze == NULL) break; | |
1225 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
1226 } | |
1227 } | |
1228 | |
1229 | |
1230 // Version that works for JDK 1.2.x | |
1231 void ClassPathZipEntry::compile_the_world12(Handle loader, TRAPS) { | |
1232 real_jzfile12* zip = (real_jzfile12*) _zip; | |
1233 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
1234 tty->cr(); | |
1235 // Iterate over all entries in zip file | |
1236 for (int n = 0; ; n++) { | |
1237 real_jzentry12 * ze = (real_jzentry12 *)((*GetNextEntry)(_zip, n)); | |
1238 if (ze == NULL) break; | |
1239 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
1240 } | |
1241 } | |
1242 | |
1243 bool ClassPathZipEntry::is_rt_jar() { | |
1244 if (JDK_Version::is_jdk12x_version()) { | |
1245 return is_rt_jar12(); | |
1246 } else { | |
1247 return is_rt_jar13(); | |
1248 } | |
1249 } | |
1250 | |
1251 // JDK 1.3 version | |
1252 bool ClassPathZipEntry::is_rt_jar13() { | |
1253 real_jzfile13* zip = (real_jzfile13*) _zip; | |
1254 int len = (int)strlen(zip->name); | |
1255 // Check whether zip name ends in "rt.jar" | |
1256 // This will match other archives named rt.jar as well, but this is | |
1257 // only used for debugging. | |
1258 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
1259 } | |
1260 | |
1261 // JDK 1.2 version | |
1262 bool ClassPathZipEntry::is_rt_jar12() { | |
1263 real_jzfile12* zip = (real_jzfile12*) _zip; | |
1264 int len = (int)strlen(zip->name); | |
1265 // Check whether zip name ends in "rt.jar" | |
1266 // This will match other archives named rt.jar as well, but this is | |
1267 // only used for debugging. | |
1268 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
1269 } | |
1270 | |
1271 void LazyClassPathEntry::compile_the_world(Handle loader, TRAPS) { | |
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1272 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1273 if (cpe != NULL) { |
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1274 cpe->compile_the_world(loader, CHECK); |
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1275 } |
0 | 1276 } |
1277 | |
1278 bool LazyClassPathEntry::is_rt_jar() { | |
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1279 Thread* THREAD = Thread::current(); |
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1280 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1281 return (cpe != NULL) ? cpe->is_jar_file() : false; |
0 | 1282 } |
1283 | |
1284 void ClassLoader::compile_the_world() { | |
1285 EXCEPTION_MARK; | |
1286 HandleMark hm(THREAD); | |
1287 ResourceMark rm(THREAD); | |
1288 // Make sure we don't run with background compilation | |
1289 BackgroundCompilation = false; | |
1290 // Find bootstrap loader | |
1291 Handle system_class_loader (THREAD, SystemDictionary::java_system_loader()); | |
1292 // Iterate over all bootstrap class path entries | |
1293 ClassPathEntry* e = _first_entry; | |
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1294 jlong start = os::javaTimeMillis(); |
0 | 1295 while (e != NULL) { |
1296 // We stop at rt.jar, unless it is the first bootstrap path entry | |
1297 if (e->is_rt_jar() && e != _first_entry) break; | |
1298 e->compile_the_world(system_class_loader, CATCH); | |
1299 e = e->next(); | |
1300 } | |
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1301 jlong end = os::javaTimeMillis(); |
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1302 tty->print_cr("CompileTheWorld : Done (%d classes, %d methods, %d ms)", |
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1303 _compile_the_world_class_counter, _compile_the_world_method_counter, (end - start)); |
0 | 1304 { |
1305 // Print statistics as if before normal exit: | |
1306 extern void print_statistics(); | |
1307 print_statistics(); | |
1308 } | |
1309 vm_exit(0); | |
1310 } | |
1311 | |
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1312 int ClassLoader::_compile_the_world_class_counter = 0; |
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1313 int ClassLoader::_compile_the_world_method_counter = 0; |
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1314 static int _codecache_sweep_counter = 0; |
0 | 1315 |
2257 | 1316 // Filter out all exceptions except OOMs |
1317 static void clear_pending_exception_if_not_oom(TRAPS) { | |
1318 if (HAS_PENDING_EXCEPTION && | |
1319 !PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
1320 CLEAR_PENDING_EXCEPTION; | |
1321 } | |
1322 // The CHECK at the caller will propagate the exception out | |
1323 } | |
1324 | |
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1325 /** |
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1326 * Returns if the given method should be compiled when doing compile-the-world. |
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1327 * |
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1328 * TODO: This should be a private method in a CompileTheWorld class. |
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1329 */ |
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1330 static bool can_be_compiled(methodHandle m, int comp_level) { |
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1331 assert(CompileTheWorld, "must be"); |
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1332 |
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1333 // It's not valid to compile a native wrapper for MethodHandle methods |
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1334 // that take a MemberName appendix since the bytecode signature is not |
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1335 // correct. |
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1336 vmIntrinsics::ID iid = m->intrinsic_id(); |
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1337 if (MethodHandles::is_signature_polymorphic(iid) && MethodHandles::has_member_arg(iid)) { |
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1338 return false; |
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1339 } |
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1340 |
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1341 return CompilationPolicy::can_be_compiled(m, comp_level); |
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1342 } |
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1343 |
0 | 1344 void ClassLoader::compile_the_world_in(char* name, Handle loader, TRAPS) { |
1345 int len = (int)strlen(name); | |
1346 if (len > 6 && strcmp(".class", name + len - 6) == 0) { | |
1347 // We have a .class file | |
1348 char buffer[2048]; | |
1349 strncpy(buffer, name, len - 6); | |
1350 buffer[len-6] = 0; | |
1351 // If the file has a period after removing .class, it's not really a | |
1352 // valid class file. The class loader will check everything else. | |
1353 if (strchr(buffer, '.') == NULL) { | |
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1354 _compile_the_world_class_counter++; |
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1355 if (_compile_the_world_class_counter > CompileTheWorldStopAt) return; |
723 | 1356 |
1357 // Construct name without extension | |
2177
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1358 TempNewSymbol sym = SymbolTable::new_symbol(buffer, CHECK); |
723 | 1359 // Use loader to load and initialize class |
6725
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1360 Klass* ik = SystemDictionary::resolve_or_null(sym, loader, Handle(), THREAD); |
723 | 1361 instanceKlassHandle k (THREAD, ik); |
1362 if (k.not_null() && !HAS_PENDING_EXCEPTION) { | |
1363 k->initialize(THREAD); | |
1364 } | |
1365 bool exception_occurred = HAS_PENDING_EXCEPTION; | |
2257 | 1366 clear_pending_exception_if_not_oom(CHECK); |
723 | 1367 if (CompileTheWorldPreloadClasses && k.not_null()) { |
6725
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1368 ConstantPool::preload_and_initialize_all_classes(k->constants(), THREAD); |
723 | 1369 if (HAS_PENDING_EXCEPTION) { |
1370 // If something went wrong in preloading we just ignore it | |
2257 | 1371 clear_pending_exception_if_not_oom(CHECK); |
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1372 tty->print_cr("Preloading failed for (%d) %s", _compile_the_world_class_counter, buffer); |
0 | 1373 } |
723 | 1374 } |
1375 | |
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1376 if (_compile_the_world_class_counter >= CompileTheWorldStartAt) { |
2323
bc6b27fb3568
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|
1377 if (k.is_null() || exception_occurred) { |
0 | 1378 // If something went wrong (e.g. ExceptionInInitializerError) we skip this class |
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1379 tty->print_cr("CompileTheWorld (%d) : Skipping %s", _compile_the_world_class_counter, buffer); |
0 | 1380 } else { |
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1381 tty->print_cr("CompileTheWorld (%d) : %s", _compile_the_world_class_counter, buffer); |
0 | 1382 // Preload all classes to get around uncommon traps |
1383 // Iterate over all methods in class | |
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1384 int comp_level = CompilationPolicy::policy()->initial_compile_level(); |
0 | 1385 for (int n = 0; n < k->methods()->length(); n++) { |
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1386 methodHandle m (THREAD, k->methods()->at(n)); |
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1387 if (can_be_compiled(m, comp_level)) { |
1188
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1388 if (++_codecache_sweep_counter == CompileTheWorldSafepointInterval) { |
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1389 // Give sweeper a chance to keep up with CTW |
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|
1390 VM_ForceSafepoint op; |
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|
1391 VMThread::execute(&op); |
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|
1392 _codecache_sweep_counter = 0; |
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1393 } |
0 | 1394 // Force compilation |
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1395 CompileBroker::compile_method(m, InvocationEntryBci, comp_level, |
0 | 1396 methodHandle(), 0, "CTW", THREAD); |
1397 if (HAS_PENDING_EXCEPTION) { | |
2257 | 1398 clear_pending_exception_if_not_oom(CHECK); |
12255
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1399 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
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1400 } else { |
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1401 _compile_the_world_method_counter++; |
0 | 1402 } |
3837
43f9d800f276
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iveresov
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|
1403 if (TieredCompilation && TieredStopAtLevel >= CompLevel_full_optimization) { |
723 | 1404 // Clobber the first compile and force second tier compilation |
1405 nmethod* nm = m->code(); | |
1406 if (nm != NULL) { | |
1407 // Throw out the code so that the code cache doesn't fill up | |
1408 nm->make_not_entrant(); | |
1409 m->clear_code(); | |
1410 } | |
1783 | 1411 CompileBroker::compile_method(m, InvocationEntryBci, CompLevel_full_optimization, |
723 | 1412 methodHandle(), 0, "CTW", THREAD); |
1413 if (HAS_PENDING_EXCEPTION) { | |
2257 | 1414 clear_pending_exception_if_not_oom(CHECK); |
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1415 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
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1416 } else { |
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1417 _compile_the_world_method_counter++; |
723 | 1418 } |
0 | 1419 } |
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1420 } else { |
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1421 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
0 | 1422 } |
723 | 1423 |
1424 nmethod* nm = m->code(); | |
1425 if (nm != NULL) { | |
1426 // Throw out the code so that the code cache doesn't fill up | |
1427 nm->make_not_entrant(); | |
1428 m->clear_code(); | |
0 | 1429 } |
1430 } | |
1431 } | |
1432 } | |
1433 } | |
1434 } | |
1435 } | |
1436 | |
1437 #endif //PRODUCT | |
2139
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1438 |
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1439 // 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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1440 // they could get inlined by agressive compiler, an unknown trick, see bug 6966589. |
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|
1441 void PerfClassTraceTime::initialize() { |
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|
1442 if (!UsePerfData) return; |
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|
1443 |
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1444 if (_eventp != NULL) { |
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|
1445 // increment the event counter |
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1446 _eventp->inc(); |
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|
1447 } |
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|
1448 |
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1449 // stop the current active thread-local timer to measure inclusive time |
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1450 _prev_active_event = -1; |
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|
1451 for (int i=0; i < EVENT_TYPE_COUNT; i++) { |
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|
1452 if (_timers[i].is_active()) { |
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1453 assert(_prev_active_event == -1, "should have only one active timer"); |
75efcee5ac47
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1454 _prev_active_event = i; |
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|
1455 _timers[i].stop(); |
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|
1456 } |
75efcee5ac47
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|
1457 } |
75efcee5ac47
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|
1458 |
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changeset
|
1459 if (_recursion_counters == NULL || (_recursion_counters[_event_type])++ == 0) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1460 // start the inclusive timer if not recursively called |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1461 _t.start(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1462 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1463 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1464 // start thread-local timer of the given event type |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1465 if (!_timers[_event_type].is_active()) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1466 _timers[_event_type].start(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1467 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1468 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1469 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1470 PerfClassTraceTime::~PerfClassTraceTime() { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1471 if (!UsePerfData) return; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1472 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1473 // stop the thread-local timer as the event completes |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1474 // 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
|
1475 _timers[_event_type].stop(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1476 jlong selftime = _timers[_event_type].ticks(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1477 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1478 if (_prev_active_event >= 0) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1479 _timers[_prev_active_event].start(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1480 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1481 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1482 if (_recursion_counters != NULL && --(_recursion_counters[_event_type]) > 0) return; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1483 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1484 // increment the counters only on the leaf call |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1485 _t.stop(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1486 _timep->inc(_t.ticks()); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1487 if (_selftimep != NULL) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1488 _selftimep->inc(selftime); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1489 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1490 // 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
|
1491 ClassLoader::perf_accumulated_time()->inc(selftime); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1492 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1493 // reset the timer |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1494 _timers[_event_type].reset(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1495 } |