Mercurial > hg > truffle
annotate src/share/vm/classfile/classLoader.cpp @ 21771:ed3d7af510bd
BytecodeParser#lookupField: use eagerResolving instead of unresolvedIsError to guard explicit initialization.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Wed, 03 Jun 2015 09:28:41 +0200 |
parents | 7848fc12602b |
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rev | line source |
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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); | |
18096 | 93 typedef jint (JNICALL *Crc32_t)(jint crc, const jbyte *buf, jint len); |
0 | 94 |
95 static ZipOpen_t ZipOpen = NULL; | |
96 static ZipClose_t ZipClose = NULL; | |
97 static FindEntry_t FindEntry = NULL; | |
98 static ReadEntry_t ReadEntry = NULL; | |
99 static ReadMappedEntry_t ReadMappedEntry = NULL; | |
100 static GetNextEntry_t GetNextEntry = NULL; | |
101 static canonicalize_fn_t CanonicalizeEntry = NULL; | |
18096 | 102 static Crc32_t Crc32 = NULL; |
0 | 103 |
104 // Globals | |
105 | |
106 PerfCounter* ClassLoader::_perf_accumulated_time = NULL; | |
107 PerfCounter* ClassLoader::_perf_classes_inited = NULL; | |
108 PerfCounter* ClassLoader::_perf_class_init_time = NULL; | |
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109 PerfCounter* ClassLoader::_perf_class_init_selftime = NULL; |
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110 PerfCounter* ClassLoader::_perf_classes_verified = NULL; |
0 | 111 PerfCounter* ClassLoader::_perf_class_verify_time = NULL; |
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112 PerfCounter* ClassLoader::_perf_class_verify_selftime = NULL; |
0 | 113 PerfCounter* ClassLoader::_perf_classes_linked = NULL; |
114 PerfCounter* ClassLoader::_perf_class_link_time = NULL; | |
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115 PerfCounter* ClassLoader::_perf_class_link_selftime = NULL; |
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116 PerfCounter* ClassLoader::_perf_class_parse_time = NULL; |
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117 PerfCounter* ClassLoader::_perf_class_parse_selftime = NULL; |
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118 PerfCounter* ClassLoader::_perf_sys_class_lookup_time = NULL; |
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119 PerfCounter* ClassLoader::_perf_shared_classload_time = NULL; |
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120 PerfCounter* ClassLoader::_perf_sys_classload_time = NULL; |
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121 PerfCounter* ClassLoader::_perf_app_classload_time = NULL; |
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122 PerfCounter* ClassLoader::_perf_app_classload_selftime = NULL; |
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123 PerfCounter* ClassLoader::_perf_app_classload_count = NULL; |
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124 PerfCounter* ClassLoader::_perf_define_appclasses = NULL; |
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125 PerfCounter* ClassLoader::_perf_define_appclass_time = NULL; |
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126 PerfCounter* ClassLoader::_perf_define_appclass_selftime = NULL; |
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127 PerfCounter* ClassLoader::_perf_app_classfile_bytes_read = NULL; |
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128 PerfCounter* ClassLoader::_perf_sys_classfile_bytes_read = NULL; |
0 | 129 PerfCounter* ClassLoader::_sync_systemLoaderLockContentionRate = NULL; |
130 PerfCounter* ClassLoader::_sync_nonSystemLoaderLockContentionRate = NULL; | |
131 PerfCounter* ClassLoader::_sync_JVMFindLoadedClassLockFreeCounter = NULL; | |
132 PerfCounter* ClassLoader::_sync_JVMDefineClassLockFreeCounter = NULL; | |
133 PerfCounter* ClassLoader::_sync_JNIDefineClassLockFreeCounter = NULL; | |
134 PerfCounter* ClassLoader::_unsafe_defineClassCallCounter = NULL; | |
135 PerfCounter* ClassLoader::_isUnsyncloadClass = NULL; | |
136 PerfCounter* ClassLoader::_load_instance_class_failCounter = NULL; | |
137 | |
138 ClassPathEntry* ClassLoader::_first_entry = NULL; | |
139 ClassPathEntry* ClassLoader::_last_entry = NULL; | |
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140 int ClassLoader::_num_entries = 0; |
0 | 141 PackageHashtable* ClassLoader::_package_hash_table = NULL; |
142 | |
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143 #if INCLUDE_CDS |
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144 SharedPathsMiscInfo* ClassLoader::_shared_paths_misc_info = NULL; |
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145 #endif |
0 | 146 // helper routines |
147 bool string_starts_with(const char* str, const char* str_to_find) { | |
148 size_t str_len = strlen(str); | |
149 size_t str_to_find_len = strlen(str_to_find); | |
150 if (str_to_find_len > str_len) { | |
151 return false; | |
152 } | |
153 return (strncmp(str, str_to_find, str_to_find_len) == 0); | |
154 } | |
155 | |
156 bool string_ends_with(const char* str, const char* str_to_find) { | |
157 size_t str_len = strlen(str); | |
158 size_t str_to_find_len = strlen(str_to_find); | |
159 if (str_to_find_len > str_len) { | |
160 return false; | |
161 } | |
162 return (strncmp(str + (str_len - str_to_find_len), str_to_find, str_to_find_len) == 0); | |
163 } | |
164 | |
165 | |
166 MetaIndex::MetaIndex(char** meta_package_names, int num_meta_package_names) { | |
167 if (num_meta_package_names == 0) { | |
168 _meta_package_names = NULL; | |
169 _num_meta_package_names = 0; | |
170 } else { | |
6197 | 171 _meta_package_names = NEW_C_HEAP_ARRAY(char*, num_meta_package_names, mtClass); |
0 | 172 _num_meta_package_names = num_meta_package_names; |
173 memcpy(_meta_package_names, meta_package_names, num_meta_package_names * sizeof(char*)); | |
174 } | |
175 } | |
176 | |
177 | |
178 MetaIndex::~MetaIndex() { | |
6197 | 179 FREE_C_HEAP_ARRAY(char*, _meta_package_names, mtClass); |
0 | 180 } |
181 | |
182 | |
183 bool MetaIndex::may_contain(const char* class_name) { | |
184 if ( _num_meta_package_names == 0) { | |
185 return false; | |
186 } | |
187 size_t class_name_len = strlen(class_name); | |
188 for (int i = 0; i < _num_meta_package_names; i++) { | |
189 char* pkg = _meta_package_names[i]; | |
190 size_t pkg_len = strlen(pkg); | |
191 size_t min_len = MIN2(class_name_len, pkg_len); | |
192 if (!strncmp(class_name, pkg, min_len)) { | |
193 return true; | |
194 } | |
195 } | |
196 return false; | |
197 } | |
198 | |
199 | |
200 ClassPathEntry::ClassPathEntry() { | |
201 set_next(NULL); | |
202 } | |
203 | |
204 | |
205 bool ClassPathEntry::is_lazy() { | |
206 return false; | |
207 } | |
208 | |
20376 | 209 ClassPathDirEntry::ClassPathDirEntry(const char* dir) : ClassPathEntry() { |
210 char* copy = NEW_C_HEAP_ARRAY(char, strlen(dir)+1, mtClass); | |
211 strcpy(copy, dir); | |
212 _dir = copy; | |
0 | 213 } |
214 | |
215 | |
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216 ClassFileStream* ClassPathDirEntry::open_stream(const char* name, TRAPS) { |
0 | 217 // construct full path name |
218 char path[JVM_MAXPATHLEN]; | |
219 if (jio_snprintf(path, sizeof(path), "%s%s%s", _dir, os::file_separator(), name) == -1) { | |
220 return NULL; | |
221 } | |
222 // check if file exists | |
223 struct stat st; | |
224 if (os::stat(path, &st) == 0) { | |
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225 #if INCLUDE_CDS |
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226 if (DumpSharedSpaces) { |
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227 // We have already check in ClassLoader::check_shared_classpath() that the directory is empty, so |
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228 // we should never find a file underneath it -- unless user has added a new file while we are running |
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229 // the dump, in which case let's quit! |
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230 ShouldNotReachHere(); |
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231 } |
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232 #endif |
0 | 233 // found file, open it |
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234 int file_handle = os::open(path, 0, 0); |
0 | 235 if (file_handle != -1) { |
236 // read contents into resource array | |
237 u1* buffer = NEW_RESOURCE_ARRAY(u1, st.st_size); | |
238 size_t num_read = os::read(file_handle, (char*) buffer, st.st_size); | |
239 // close file | |
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240 os::close(file_handle); |
0 | 241 // construct ClassFileStream |
242 if (num_read == (size_t)st.st_size) { | |
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243 if (UsePerfData) { |
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244 ClassLoader::perf_sys_classfile_bytes_read()->inc(num_read); |
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245 } |
0 | 246 return new ClassFileStream(buffer, st.st_size, _dir); // Resource allocated |
247 } | |
248 } | |
249 } | |
250 return NULL; | |
251 } | |
252 | |
253 | |
254 ClassPathZipEntry::ClassPathZipEntry(jzfile* zip, const char* zip_name) : ClassPathEntry() { | |
255 _zip = zip; | |
20376 | 256 char *copy = NEW_C_HEAP_ARRAY(char, strlen(zip_name)+1, mtClass); |
257 strcpy(copy, zip_name); | |
258 _zip_name = copy; | |
0 | 259 } |
260 | |
261 ClassPathZipEntry::~ClassPathZipEntry() { | |
262 if (ZipClose != NULL) { | |
263 (*ZipClose)(_zip); | |
264 } | |
6197 | 265 FREE_C_HEAP_ARRAY(char, _zip_name, mtClass); |
0 | 266 } |
267 | |
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268 u1* ClassPathZipEntry::open_entry(const char* name, jint* filesize, bool nul_terminate, TRAPS) { |
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269 // enable call to C land |
0 | 270 JavaThread* thread = JavaThread::current(); |
271 ThreadToNativeFromVM ttn(thread); | |
272 // check whether zip archive contains name | |
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273 jint name_len; |
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274 jzentry* entry = (*FindEntry)(_zip, name, filesize, &name_len); |
0 | 275 if (entry == NULL) return NULL; |
276 u1* buffer; | |
277 char name_buf[128]; | |
278 char* filename; | |
279 if (name_len < 128) { | |
280 filename = name_buf; | |
281 } else { | |
282 filename = NEW_RESOURCE_ARRAY(char, name_len + 1); | |
283 } | |
284 | |
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285 // file found, get pointer to the entry in mmapped jar file. |
0 | 286 if (ReadMappedEntry == NULL || |
287 !(*ReadMappedEntry)(_zip, entry, &buffer, filename)) { | |
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288 // mmapped access not available, perhaps due to compression, |
0 | 289 // read contents into resource array |
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290 int size = (*filesize) + ((nul_terminate) ? 1 : 0); |
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291 buffer = NEW_RESOURCE_ARRAY(u1, size); |
0 | 292 if (!(*ReadEntry)(_zip, entry, buffer, filename)) return NULL; |
293 } | |
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294 |
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295 // return result |
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296 if (nul_terminate) { |
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297 buffer[*filesize] = 0; |
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298 } |
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299 return buffer; |
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300 } |
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301 |
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302 ClassFileStream* ClassPathZipEntry::open_stream(const char* name, TRAPS) { |
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303 jint filesize; |
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304 u1* buffer = open_entry(name, &filesize, false, CHECK_NULL); |
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305 if (buffer == NULL) { |
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306 return NULL; |
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307 } |
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308 if (UsePerfData) { |
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309 ClassLoader::perf_sys_classfile_bytes_read()->inc(filesize); |
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310 } |
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311 return new ClassFileStream(buffer, filesize, _zip_name); // Resource allocated |
0 | 312 } |
313 | |
314 // invoke function for each entry in the zip file | |
315 void ClassPathZipEntry::contents_do(void f(const char* name, void* context), void* context) { | |
316 JavaThread* thread = JavaThread::current(); | |
317 HandleMark handle_mark(thread); | |
318 ThreadToNativeFromVM ttn(thread); | |
319 for (int n = 0; ; n++) { | |
320 jzentry * ze = ((*GetNextEntry)(_zip, n)); | |
321 if (ze == NULL) break; | |
322 (*f)(ze->name, context); | |
323 } | |
324 } | |
325 | |
20376 | 326 LazyClassPathEntry::LazyClassPathEntry(const char* path, const struct stat* st, bool throw_exception) : ClassPathEntry() { |
0 | 327 _path = strdup(path); |
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328 _st = *st; |
0 | 329 _meta_index = NULL; |
330 _resolved_entry = NULL; | |
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331 _has_error = false; |
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332 _throw_exception = throw_exception; |
0 | 333 } |
334 | |
335 bool LazyClassPathEntry::is_jar_file() { | |
336 return ((_st.st_mode & S_IFREG) == S_IFREG); | |
337 } | |
338 | |
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339 ClassPathEntry* LazyClassPathEntry::resolve_entry(TRAPS) { |
0 | 340 if (_resolved_entry != NULL) { |
341 return (ClassPathEntry*) _resolved_entry; | |
342 } | |
343 ClassPathEntry* new_entry = NULL; | |
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344 new_entry = ClassLoader::create_class_path_entry(_path, &_st, false, _throw_exception, CHECK_NULL); |
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345 if (!_throw_exception && new_entry == NULL) { |
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346 assert(!HAS_PENDING_EXCEPTION, "must be"); |
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347 return NULL; |
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348 } |
0 | 349 { |
350 ThreadCritical tc; | |
351 if (_resolved_entry == NULL) { | |
352 _resolved_entry = new_entry; | |
353 return new_entry; | |
354 } | |
355 } | |
356 assert(_resolved_entry != NULL, "bug in MT-safe resolution logic"); | |
357 delete new_entry; | |
358 return (ClassPathEntry*) _resolved_entry; | |
359 } | |
360 | |
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361 ClassFileStream* LazyClassPathEntry::open_stream(const char* name, TRAPS) { |
0 | 362 if (_meta_index != NULL && |
363 !_meta_index->may_contain(name)) { | |
364 return NULL; | |
365 } | |
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366 if (_has_error) { |
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367 return NULL; |
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368 } |
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369 ClassPathEntry* cpe = resolve_entry(THREAD); |
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370 if (cpe == NULL) { |
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371 _has_error = true; |
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372 return NULL; |
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373 } else { |
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374 return cpe->open_stream(name, THREAD); |
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375 } |
0 | 376 } |
377 | |
378 bool LazyClassPathEntry::is_lazy() { | |
379 return true; | |
380 } | |
381 | |
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382 u1* LazyClassPathEntry::open_entry(const char* name, jint* filesize, bool nul_terminate, TRAPS) { |
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383 if (_has_error) { |
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384 return NULL; |
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385 } |
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386 ClassPathEntry* cpe = resolve_entry(THREAD); |
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387 if (cpe == NULL) { |
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388 _has_error = true; |
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389 return NULL; |
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390 } else if (cpe->is_jar_file()) { |
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391 return ((ClassPathZipEntry*)cpe)->open_entry(name, filesize, nul_terminate,THREAD); |
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392 } else { |
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393 ShouldNotReachHere(); |
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394 *filesize = 0; |
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395 return NULL; |
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396 } |
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397 } |
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398 |
0 | 399 static void print_meta_index(LazyClassPathEntry* entry, |
400 GrowableArray<char*>& meta_packages) { | |
401 tty->print("[Meta index for %s=", entry->name()); | |
402 for (int i = 0; i < meta_packages.length(); i++) { | |
403 if (i > 0) tty->print(" "); | |
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404 tty->print("%s", meta_packages.at(i)); |
0 | 405 } |
406 tty->print_cr("]"); | |
407 } | |
408 | |
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409 #if INCLUDE_CDS |
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410 void ClassLoader::exit_with_path_failure(const char* error, const char* message) { |
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411 assert(DumpSharedSpaces, "only called at dump time"); |
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412 tty->print_cr("Hint: enable -XX:+TraceClassPaths to diagnose the failure"); |
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413 vm_exit_during_initialization(error, message); |
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414 } |
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415 #endif |
0 | 416 |
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417 void ClassLoader::trace_class_path(const char* msg, const char* name) { |
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418 if (!TraceClassPaths) { |
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419 return; |
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420 } |
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421 |
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422 if (msg) { |
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423 tty->print("%s", msg); |
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424 } |
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425 if (name) { |
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426 if (strlen(name) < 256) { |
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427 tty->print("%s", name); |
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428 } else { |
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429 // For very long paths, we need to print each character separately, |
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430 // as print_cr() has a length limit |
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431 while (name[0] != '\0') { |
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432 tty->print("%c", name[0]); |
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433 name++; |
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434 } |
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435 } |
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436 } |
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437 if (msg && msg[0] == '[') { |
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438 tty->print_cr("]"); |
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439 } else { |
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440 tty->cr(); |
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441 } |
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442 } |
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443 |
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444 void ClassLoader::setup_bootstrap_meta_index() { |
0 | 445 // Set up meta index which allows us to open boot jars lazily if |
446 // class data sharing is enabled | |
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447 const char* meta_index_path = Arguments::get_meta_index_path(); |
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448 const char* meta_index_dir = Arguments::get_meta_index_dir(); |
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449 setup_meta_index(meta_index_path, meta_index_dir, 0); |
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450 } |
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451 |
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452 void ClassLoader::setup_meta_index(const char* meta_index_path, const char* meta_index_dir, int start_index) { |
0 | 453 const char* known_version = "% VERSION 2"; |
454 FILE* file = fopen(meta_index_path, "r"); | |
455 int line_no = 0; | |
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456 #if INCLUDE_CDS |
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457 if (DumpSharedSpaces) { |
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458 if (file != NULL) { |
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459 _shared_paths_misc_info->add_required_file(meta_index_path); |
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460 } else { |
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461 _shared_paths_misc_info->add_nonexist_path(meta_index_path); |
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462 } |
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463 } |
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464 #endif |
0 | 465 if (file != NULL) { |
466 ResourceMark rm; | |
467 LazyClassPathEntry* cur_entry = NULL; | |
468 GrowableArray<char*> boot_class_path_packages(10); | |
469 char package_name[256]; | |
470 bool skipCurrentJar = false; | |
471 while (fgets(package_name, sizeof(package_name), file) != NULL) { | |
472 ++line_no; | |
473 // Remove trailing newline | |
474 package_name[strlen(package_name) - 1] = '\0'; | |
475 switch(package_name[0]) { | |
476 case '%': | |
477 { | |
478 if ((line_no == 1) && (strcmp(package_name, known_version) != 0)) { | |
479 if (TraceClassLoading && Verbose) { | |
480 tty->print("[Unsupported meta index version]"); | |
481 } | |
482 fclose(file); | |
483 return; | |
484 } | |
485 } | |
486 | |
487 // These directives indicate jar files which contain only | |
488 // classes, only non-classfile resources, or a combination of | |
489 // the two. See src/share/classes/sun/misc/MetaIndex.java and | |
490 // make/tools/MetaIndex/BuildMetaIndex.java in the J2SE | |
491 // workspace. | |
492 case '#': | |
493 case '!': | |
494 case '@': | |
495 { | |
496 // Hand off current packages to current lazy entry (if any) | |
497 if ((cur_entry != NULL) && | |
498 (boot_class_path_packages.length() > 0)) { | |
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499 if ((TraceClassLoading || TraceClassPaths) && Verbose) { |
0 | 500 print_meta_index(cur_entry, boot_class_path_packages); |
501 } | |
502 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
503 boot_class_path_packages.length()); | |
504 cur_entry->set_meta_index(index); | |
505 } | |
506 cur_entry = NULL; | |
507 boot_class_path_packages.clear(); | |
508 | |
509 // Find lazy entry corresponding to this jar file | |
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510 int count = 0; |
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511 for (ClassPathEntry* entry = _first_entry; entry != NULL; entry = entry->next(), count++) { |
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512 if (count >= start_index && |
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513 entry->is_lazy() && |
0 | 514 string_starts_with(entry->name(), meta_index_dir) && |
515 string_ends_with(entry->name(), &package_name[2])) { | |
516 cur_entry = (LazyClassPathEntry*) entry; | |
517 break; | |
518 } | |
519 } | |
520 | |
521 // If the first character is '@', it indicates the following jar | |
522 // file is a resource only jar file in which case, we should skip | |
523 // reading the subsequent entries since the resource loading is | |
524 // totally handled by J2SE side. | |
525 if (package_name[0] == '@') { | |
526 if (cur_entry != NULL) { | |
527 cur_entry->set_meta_index(new MetaIndex(NULL, 0)); | |
528 } | |
529 cur_entry = NULL; | |
530 skipCurrentJar = true; | |
531 } else { | |
532 skipCurrentJar = false; | |
533 } | |
534 | |
535 break; | |
536 } | |
537 | |
538 default: | |
539 { | |
540 if (!skipCurrentJar && cur_entry != NULL) { | |
541 char* new_name = strdup(package_name); | |
542 boot_class_path_packages.append(new_name); | |
543 } | |
544 } | |
545 } | |
546 } | |
547 // Hand off current packages to current lazy entry (if any) | |
548 if ((cur_entry != NULL) && | |
549 (boot_class_path_packages.length() > 0)) { | |
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550 if ((TraceClassLoading || TraceClassPaths) && Verbose) { |
0 | 551 print_meta_index(cur_entry, boot_class_path_packages); |
552 } | |
553 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
554 boot_class_path_packages.length()); | |
555 cur_entry->set_meta_index(index); | |
556 } | |
557 fclose(file); | |
558 } | |
559 } | |
560 | |
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561 #if INCLUDE_CDS |
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562 void ClassLoader::check_shared_classpath(const char *path) { |
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563 if (strcmp(path, "") == 0) { |
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564 exit_with_path_failure("Cannot have empty path in archived classpaths", NULL); |
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565 } |
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566 |
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567 struct stat st; |
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568 if (os::stat(path, &st) == 0) { |
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569 if ((st.st_mode & S_IFREG) != S_IFREG) { // is directory |
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570 if (!os::dir_is_empty(path)) { |
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571 tty->print_cr("Error: non-empty directory '%s'", path); |
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572 exit_with_path_failure("CDS allows only empty directories in archived classpaths", NULL); |
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573 } |
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574 } |
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575 } |
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576 } |
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577 #endif |
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578 |
0 | 579 void ClassLoader::setup_bootstrap_search_path() { |
580 assert(_first_entry == NULL, "should not setup bootstrap class search path twice"); | |
20376 | 581 const char* sys_class_path = Arguments::get_sysclasspath(); |
582 if (PrintSharedArchiveAndExit) { | |
583 // Don't print sys_class_path - this is the bootcp of this current VM process, not necessarily | |
584 // the same as the bootcp of the shared archive. | |
585 } else { | |
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586 trace_class_path("[Bootstrap loader class path=", sys_class_path); |
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587 } |
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588 #if INCLUDE_CDS |
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589 if (DumpSharedSpaces) { |
20376 | 590 _shared_paths_misc_info->add_boot_classpath(sys_class_path); |
0 | 591 } |
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592 #endif |
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593 setup_search_path(sys_class_path); |
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594 } |
0 | 595 |
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596 #if INCLUDE_CDS |
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597 int ClassLoader::get_shared_paths_misc_info_size() { |
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598 return _shared_paths_misc_info->get_used_bytes(); |
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599 } |
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600 |
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601 void* ClassLoader::get_shared_paths_misc_info() { |
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602 return _shared_paths_misc_info->buffer(); |
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603 } |
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604 |
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605 bool ClassLoader::check_shared_paths_misc_info(void *buf, int size) { |
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606 SharedPathsMiscInfo* checker = SharedClassUtil::allocate_shared_paths_misc_info((char*)buf, size); |
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607 bool result = checker->check(); |
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608 delete checker; |
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609 return result; |
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610 } |
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611 #endif |
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612 |
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613 void ClassLoader::setup_search_path(const char *class_path, bool canonicalize) { |
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614 int offset = 0; |
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615 int len = (int)strlen(class_path); |
0 | 616 int end = 0; |
617 | |
618 // Iterate over class path entries | |
619 for (int start = 0; start < len; start = end) { | |
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620 while (class_path[end] && class_path[end] != os::path_separator()[0]) { |
0 | 621 end++; |
622 } | |
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623 EXCEPTION_MARK; |
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624 ResourceMark rm(THREAD); |
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625 char* path = NEW_RESOURCE_ARRAY(char, end - start + 1); |
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626 strncpy(path, &class_path[start], end - start); |
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627 path[end - start] = '\0'; |
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628 if (canonicalize) { |
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629 char* canonical_path = NEW_RESOURCE_ARRAY(char, JVM_MAXPATHLEN + 1); |
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630 if (get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) { |
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631 path = canonical_path; |
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632 } |
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633 } |
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634 update_class_path_entry_list(path, /*check_for_duplicates=*/canonicalize); |
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635 #if INCLUDE_CDS |
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636 if (DumpSharedSpaces) { |
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637 check_shared_classpath(path); |
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638 } |
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639 #endif |
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640 while (class_path[end] == os::path_separator()[0]) { |
0 | 641 end++; |
642 } | |
643 } | |
644 } | |
645 | |
20376 | 646 ClassPathEntry* ClassLoader::create_class_path_entry(const char *path, const struct stat* st, |
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647 bool lazy, bool throw_exception, TRAPS) { |
0 | 648 JavaThread* thread = JavaThread::current(); |
649 if (lazy) { | |
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650 return new LazyClassPathEntry(path, st, throw_exception); |
0 | 651 } |
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652 ClassPathEntry* new_entry = NULL; |
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653 if ((st->st_mode & S_IFREG) == S_IFREG) { |
0 | 654 // Regular file, should be a zip file |
655 // Canonicalized filename | |
656 char canonical_path[JVM_MAXPATHLEN]; | |
657 if (!get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) { | |
658 // This matches the classic VM | |
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659 if (throw_exception) { |
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660 THROW_MSG_(vmSymbols::java_io_IOException(), "Bad pathname", NULL); |
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661 } else { |
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662 return NULL; |
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663 } |
0 | 664 } |
665 char* error_msg = NULL; | |
666 jzfile* zip; | |
667 { | |
668 // enable call to C land | |
669 ThreadToNativeFromVM ttn(thread); | |
670 HandleMark hm(thread); | |
671 zip = (*ZipOpen)(canonical_path, &error_msg); | |
672 } | |
673 if (zip != NULL && error_msg == NULL) { | |
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674 new_entry = new ClassPathZipEntry(zip, path); |
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675 if (TraceClassLoading || TraceClassPaths) { |
0 | 676 tty->print_cr("[Opened %s]", path); |
677 } | |
678 } else { | |
679 ResourceMark rm(thread); | |
680 char *msg; | |
681 if (error_msg == NULL) { | |
682 msg = NEW_RESOURCE_ARRAY(char, strlen(path) + 128); ; | |
683 jio_snprintf(msg, strlen(path) + 127, "error in opening JAR file %s", path); | |
684 } else { | |
685 int len = (int)(strlen(path) + strlen(error_msg) + 128); | |
686 msg = NEW_RESOURCE_ARRAY(char, len); ; | |
687 jio_snprintf(msg, len - 1, "error in opening JAR file <%s> %s", error_msg, path); | |
688 } | |
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689 if (throw_exception) { |
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690 THROW_MSG_(vmSymbols::java_lang_ClassNotFoundException(), msg, NULL); |
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691 } else { |
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692 return NULL; |
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693 } |
0 | 694 } |
695 } else { | |
696 // Directory | |
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697 new_entry = new ClassPathDirEntry(path); |
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698 if (TraceClassLoading || TraceClassPaths) { |
0 | 699 tty->print_cr("[Path %s]", path); |
700 } | |
701 } | |
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702 return new_entry; |
0 | 703 } |
704 | |
705 | |
706 // Create a class path zip entry for a given path (return NULL if not found | |
707 // or zip/JAR file cannot be opened) | |
708 ClassPathZipEntry* ClassLoader::create_class_path_zip_entry(const char *path) { | |
709 // check for a regular file | |
710 struct stat st; | |
711 if (os::stat(path, &st) == 0) { | |
712 if ((st.st_mode & S_IFREG) == S_IFREG) { | |
713 char canonical_path[JVM_MAXPATHLEN]; | |
20376 | 714 if (get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) { |
0 | 715 char* error_msg = NULL; |
716 jzfile* zip; | |
717 { | |
718 // enable call to C land | |
719 JavaThread* thread = JavaThread::current(); | |
720 ThreadToNativeFromVM ttn(thread); | |
721 HandleMark hm(thread); | |
722 zip = (*ZipOpen)(canonical_path, &error_msg); | |
723 } | |
724 if (zip != NULL && error_msg == NULL) { | |
725 // create using canonical path | |
726 return new ClassPathZipEntry(zip, canonical_path); | |
727 } | |
728 } | |
729 } | |
730 } | |
731 return NULL; | |
732 } | |
733 | |
734 // returns true if entry already on class path | |
735 bool ClassLoader::contains_entry(ClassPathEntry *entry) { | |
736 ClassPathEntry* e = _first_entry; | |
737 while (e != NULL) { | |
738 // assume zip entries have been canonicalized | |
739 if (strcmp(entry->name(), e->name()) == 0) { | |
740 return true; | |
741 } | |
742 e = e->next(); | |
743 } | |
744 return false; | |
745 } | |
746 | |
747 void ClassLoader::add_to_list(ClassPathEntry *new_entry) { | |
748 if (new_entry != NULL) { | |
749 if (_last_entry == NULL) { | |
750 _first_entry = _last_entry = new_entry; | |
751 } else { | |
752 _last_entry->set_next(new_entry); | |
753 _last_entry = new_entry; | |
754 } | |
755 } | |
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756 _num_entries ++; |
0 | 757 } |
758 | |
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759 // Returns true IFF the file/dir exists and the entry was successfully created. |
20376 | 760 bool ClassLoader::update_class_path_entry_list(const char *path, |
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761 bool check_for_duplicates, |
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762 bool throw_exception) { |
0 | 763 struct stat st; |
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764 if (os::stat(path, &st) == 0) { |
0 | 765 // File or directory found |
766 ClassPathEntry* new_entry = NULL; | |
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767 Thread* THREAD = Thread::current(); |
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768 new_entry = create_class_path_entry(path, &st, LazyBootClassLoader, throw_exception, CHECK_(false)); |
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769 if (new_entry == NULL) { |
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770 return false; |
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771 } |
0 | 772 // The kernel VM adds dynamically to the end of the classloader path and |
773 // doesn't reorder the bootclasspath which would break java.lang.Package | |
774 // (see PackageInfo). | |
775 // Add new entry to linked list | |
776 if (!check_for_duplicates || !contains_entry(new_entry)) { | |
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777 ClassLoaderExt::add_class_path_entry(path, check_for_duplicates, new_entry); |
0 | 778 } |
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779 return true; |
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780 } else { |
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781 #if INCLUDE_CDS |
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782 if (DumpSharedSpaces) { |
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783 _shared_paths_misc_info->add_nonexist_path(path); |
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784 } |
20376 | 785 #endif |
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786 return false; |
0 | 787 } |
788 } | |
789 | |
790 void ClassLoader::print_bootclasspath() { | |
791 ClassPathEntry* e = _first_entry; | |
792 tty->print("[bootclasspath= "); | |
793 while (e != NULL) { | |
794 tty->print("%s ;", e->name()); | |
795 e = e->next(); | |
796 } | |
797 tty->print_cr("]"); | |
798 } | |
799 | |
800 void ClassLoader::load_zip_library() { | |
801 assert(ZipOpen == NULL, "should not load zip library twice"); | |
802 // First make sure native library is loaded | |
803 os::native_java_library(); | |
804 // Load zip library | |
805 char path[JVM_MAXPATHLEN]; | |
806 char ebuf[1024]; | |
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807 void* handle = NULL; |
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808 if (os::dll_build_name(path, sizeof(path), Arguments::get_dll_dir(), "zip")) { |
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809 handle = os::dll_load(path, ebuf, sizeof ebuf); |
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810 } |
0 | 811 if (handle == NULL) { |
812 vm_exit_during_initialization("Unable to load ZIP library", path); | |
813 } | |
814 // Lookup zip entry points | |
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815 ZipOpen = CAST_TO_FN_PTR(ZipOpen_t, os::dll_lookup(handle, "ZIP_Open")); |
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816 ZipClose = CAST_TO_FN_PTR(ZipClose_t, os::dll_lookup(handle, "ZIP_Close")); |
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817 FindEntry = CAST_TO_FN_PTR(FindEntry_t, os::dll_lookup(handle, "ZIP_FindEntry")); |
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818 ReadEntry = CAST_TO_FN_PTR(ReadEntry_t, os::dll_lookup(handle, "ZIP_ReadEntry")); |
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819 ReadMappedEntry = CAST_TO_FN_PTR(ReadMappedEntry_t, os::dll_lookup(handle, "ZIP_ReadMappedEntry")); |
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820 GetNextEntry = CAST_TO_FN_PTR(GetNextEntry_t, os::dll_lookup(handle, "ZIP_GetNextEntry")); |
18096 | 821 Crc32 = CAST_TO_FN_PTR(Crc32_t, os::dll_lookup(handle, "ZIP_CRC32")); |
0 | 822 |
823 // ZIP_Close is not exported on Windows in JDK5.0 so don't abort if ZIP_Close is NULL | |
18096 | 824 if (ZipOpen == NULL || FindEntry == NULL || ReadEntry == NULL || |
825 GetNextEntry == NULL || Crc32 == NULL) { | |
0 | 826 vm_exit_during_initialization("Corrupted ZIP library", path); |
827 } | |
828 | |
829 // Lookup canonicalize entry in libjava.dll | |
830 void *javalib_handle = os::native_java_library(); | |
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831 CanonicalizeEntry = CAST_TO_FN_PTR(canonicalize_fn_t, os::dll_lookup(javalib_handle, "Canonicalize")); |
0 | 832 // This lookup only works on 1.3. Do not check for non-null here |
833 } | |
834 | |
18096 | 835 int ClassLoader::crc32(int crc, const char* buf, int len) { |
836 assert(Crc32 != NULL, "ZIP_CRC32 is not found"); | |
837 return (*Crc32)(crc, (const jbyte*)buf, len); | |
838 } | |
839 | |
0 | 840 // PackageInfo data exists in order to support the java.lang.Package |
841 // class. A Package object provides information about a java package | |
842 // (version, vendor, etc.) which originates in the manifest of the jar | |
843 // file supplying the package. For application classes, the ClassLoader | |
844 // object takes care of this. | |
845 | |
846 // For system (boot) classes, the Java code in the Package class needs | |
847 // to be able to identify which source jar file contained the boot | |
848 // class, so that it can extract the manifest from it. This table | |
849 // identifies java packages with jar files in the boot classpath. | |
850 | |
851 // Because the boot classpath cannot change, the classpath index is | |
852 // sufficient to identify the source jar file or directory. (Since | |
853 // directories have no manifests, the directory name is not required, | |
854 // but is available.) | |
855 | |
856 // When using sharing -- the pathnames of entries in the boot classpath | |
857 // may not be the same at runtime as they were when the archive was | |
858 // created (NFS, Samba, etc.). The actual files and directories named | |
859 // in the classpath must be the same files, in the same order, even | |
860 // though the exact name is not the same. | |
861 | |
6197 | 862 class PackageInfo: public BasicHashtableEntry<mtClass> { |
0 | 863 public: |
864 const char* _pkgname; // Package name | |
865 int _classpath_index; // Index of directory or JAR file loaded from | |
866 | |
867 PackageInfo* next() { | |
6197 | 868 return (PackageInfo*)BasicHashtableEntry<mtClass>::next(); |
0 | 869 } |
870 | |
871 const char* pkgname() { return _pkgname; } | |
872 void set_pkgname(char* pkgname) { _pkgname = pkgname; } | |
873 | |
874 const char* filename() { | |
875 return ClassLoader::classpath_entry(_classpath_index)->name(); | |
876 } | |
877 | |
878 void set_index(int index) { | |
879 _classpath_index = index; | |
880 } | |
881 }; | |
882 | |
883 | |
6197 | 884 class PackageHashtable : public BasicHashtable<mtClass> { |
0 | 885 private: |
886 inline unsigned int compute_hash(const char *s, int n) { | |
887 unsigned int val = 0; | |
888 while (--n >= 0) { | |
889 val = *s++ + 31 * val; | |
890 } | |
891 return val; | |
892 } | |
893 | |
894 PackageInfo* bucket(int index) { | |
6197 | 895 return (PackageInfo*)BasicHashtable<mtClass>::bucket(index); |
0 | 896 } |
897 | |
898 PackageInfo* get_entry(int index, unsigned int hash, | |
899 const char* pkgname, size_t n) { | |
900 for (PackageInfo* pp = bucket(index); pp != NULL; pp = pp->next()) { | |
901 if (pp->hash() == hash && | |
902 strncmp(pkgname, pp->pkgname(), n) == 0 && | |
903 pp->pkgname()[n] == '\0') { | |
904 return pp; | |
905 } | |
906 } | |
907 return NULL; | |
908 } | |
909 | |
910 public: | |
911 PackageHashtable(int table_size) | |
6197 | 912 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo)) {} |
0 | 913 |
6197 | 914 PackageHashtable(int table_size, HashtableBucket<mtClass>* t, int number_of_entries) |
915 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo), t, number_of_entries) {} | |
0 | 916 |
917 PackageInfo* get_entry(const char* pkgname, int n) { | |
918 unsigned int hash = compute_hash(pkgname, n); | |
919 return get_entry(hash_to_index(hash), hash, pkgname, n); | |
920 } | |
921 | |
922 PackageInfo* new_entry(char* pkgname, int n) { | |
923 unsigned int hash = compute_hash(pkgname, n); | |
924 PackageInfo* pp; | |
6197 | 925 pp = (PackageInfo*)BasicHashtable<mtClass>::new_entry(hash); |
0 | 926 pp->set_pkgname(pkgname); |
927 return pp; | |
928 } | |
929 | |
930 void add_entry(PackageInfo* pp) { | |
931 int index = hash_to_index(pp->hash()); | |
6197 | 932 BasicHashtable<mtClass>::add_entry(index, pp); |
0 | 933 } |
934 | |
935 void copy_pkgnames(const char** packages) { | |
936 int n = 0; | |
937 for (int i = 0; i < table_size(); ++i) { | |
938 for (PackageInfo* pp = bucket(i); pp != NULL; pp = pp->next()) { | |
939 packages[n++] = pp->pkgname(); | |
940 } | |
941 } | |
942 assert(n == number_of_entries(), "just checking"); | |
943 } | |
944 | |
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945 CDS_ONLY(void copy_table(char** top, char* end, PackageHashtable* table);) |
0 | 946 }; |
947 | |
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948 #if INCLUDE_CDS |
0 | 949 void PackageHashtable::copy_table(char** top, char* end, |
950 PackageHashtable* table) { | |
951 // Copy (relocate) the table to the shared space. | |
6197 | 952 BasicHashtable<mtClass>::copy_table(top, end); |
0 | 953 |
954 // Calculate the space needed for the package name strings. | |
955 int i; | |
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956 intptr_t* tableSize = (intptr_t*)(*top); |
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957 *top += sizeof(intptr_t); // For table size |
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958 char* tableStart = *top; |
0 | 959 |
960 for (i = 0; i < table_size(); ++i) { | |
961 for (PackageInfo* pp = table->bucket(i); | |
962 pp != NULL; | |
963 pp = pp->next()) { | |
964 int n1 = (int)(strlen(pp->pkgname()) + 1); | |
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965 if (*top + n1 >= end) { |
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966 report_out_of_shared_space(SharedMiscData); |
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967 } |
0 | 968 pp->set_pkgname((char*)memcpy(*top, pp->pkgname(), n1)); |
969 *top += n1; | |
970 } | |
971 } | |
972 *top = (char*)align_size_up((intptr_t)*top, sizeof(HeapWord)); | |
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973 if (*top >= end) { |
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974 report_out_of_shared_space(SharedMiscData); |
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975 } |
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976 |
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977 // Write table size |
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978 intptr_t len = *top - (char*)tableStart; |
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979 *tableSize = len; |
0 | 980 } |
981 | |
982 | |
983 void ClassLoader::copy_package_info_buckets(char** top, char* end) { | |
984 _package_hash_table->copy_buckets(top, end); | |
985 } | |
986 | |
987 void ClassLoader::copy_package_info_table(char** top, char* end) { | |
988 _package_hash_table->copy_table(top, end, _package_hash_table); | |
989 } | |
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990 #endif |
0 | 991 |
992 PackageInfo* ClassLoader::lookup_package(const char *pkgname) { | |
993 const char *cp = strrchr(pkgname, '/'); | |
994 if (cp != NULL) { | |
995 // Package prefix found | |
996 int n = cp - pkgname + 1; | |
997 return _package_hash_table->get_entry(pkgname, n); | |
998 } | |
999 return NULL; | |
1000 } | |
1001 | |
1002 | |
1003 bool ClassLoader::add_package(const char *pkgname, int classpath_index, TRAPS) { | |
1004 assert(pkgname != NULL, "just checking"); | |
1005 // Bootstrap loader no longer holds system loader lock obj serializing | |
1006 // load_instance_class and thereby add_package | |
1007 { | |
1008 MutexLocker ml(PackageTable_lock, THREAD); | |
1009 // First check for previously loaded entry | |
1010 PackageInfo* pp = lookup_package(pkgname); | |
1011 if (pp != NULL) { | |
1012 // Existing entry found, check source of package | |
1013 pp->set_index(classpath_index); | |
1014 return true; | |
1015 } | |
1016 | |
1017 const char *cp = strrchr(pkgname, '/'); | |
1018 if (cp != NULL) { | |
1019 // Package prefix found | |
1020 int n = cp - pkgname + 1; | |
1021 | |
6197 | 1022 char* new_pkgname = NEW_C_HEAP_ARRAY(char, n + 1, mtClass); |
0 | 1023 if (new_pkgname == NULL) { |
1024 return false; | |
1025 } | |
1026 | |
1027 memcpy(new_pkgname, pkgname, n); | |
1028 new_pkgname[n] = '\0'; | |
1029 pp = _package_hash_table->new_entry(new_pkgname, n); | |
1030 pp->set_index(classpath_index); | |
1031 | |
1032 // Insert into hash table | |
1033 _package_hash_table->add_entry(pp); | |
1034 } | |
1035 return true; | |
1036 } | |
1037 } | |
1038 | |
1039 | |
1040 oop ClassLoader::get_system_package(const char* name, TRAPS) { | |
1041 PackageInfo* pp; | |
1042 { | |
1043 MutexLocker ml(PackageTable_lock, THREAD); | |
1044 pp = lookup_package(name); | |
1045 } | |
1046 if (pp == NULL) { | |
1047 return NULL; | |
1048 } else { | |
1049 Handle p = java_lang_String::create_from_str(pp->filename(), THREAD); | |
1050 return p(); | |
1051 } | |
1052 } | |
1053 | |
1054 | |
1055 objArrayOop ClassLoader::get_system_packages(TRAPS) { | |
1056 ResourceMark rm(THREAD); | |
1057 int nof_entries; | |
1058 const char** packages; | |
1059 { | |
1060 MutexLocker ml(PackageTable_lock, THREAD); | |
1061 // Allocate resource char* array containing package names | |
1062 nof_entries = _package_hash_table->number_of_entries(); | |
1063 if ((packages = NEW_RESOURCE_ARRAY(const char*, nof_entries)) == NULL) { | |
1064 return NULL; | |
1065 } | |
1066 _package_hash_table->copy_pkgnames(packages); | |
1067 } | |
1068 // Allocate objArray and fill with java.lang.String | |
1142 | 1069 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1070 nof_entries, CHECK_0); |
1071 objArrayHandle result(THREAD, r); | |
1072 for (int i = 0; i < nof_entries; i++) { | |
1073 Handle str = java_lang_String::create_from_str(packages[i], CHECK_0); | |
1074 result->obj_at_put(i, str()); | |
1075 } | |
1076 | |
1077 return result(); | |
1078 } | |
1079 | |
1080 | |
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1081 instanceKlassHandle ClassLoader::load_classfile(Symbol* h_name, TRAPS) { |
0 | 1082 ResourceMark rm(THREAD); |
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1083 const char* class_name = h_name->as_C_string(); |
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1084 EventMark m("loading class %s", class_name); |
0 | 1085 ThreadProfilerMark tpm(ThreadProfilerMark::classLoaderRegion); |
1086 | |
1087 stringStream st; | |
1088 // st.print() uses too much stack space while handling a StackOverflowError | |
1089 // st.print("%s.class", h_name->as_utf8()); | |
1090 st.print_raw(h_name->as_utf8()); | |
1091 st.print_raw(".class"); | |
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1092 const char* file_name = st.as_string(); |
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1093 ClassLoaderExt::Context context(class_name, file_name, THREAD); |
0 | 1094 |
1095 // Lookup stream for parsing .class file | |
1096 ClassFileStream* stream = NULL; | |
1097 int classpath_index = 0; | |
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1098 ClassPathEntry* e = NULL; |
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1099 instanceKlassHandle h; |
0 | 1100 { |
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1101 PerfClassTraceTime vmtimer(perf_sys_class_lookup_time(), |
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1102 ((JavaThread*) THREAD)->get_thread_stat()->perf_timers_addr(), |
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1103 PerfClassTraceTime::CLASS_LOAD); |
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1104 e = _first_entry; |
0 | 1105 while (e != NULL) { |
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1106 stream = e->open_stream(file_name, CHECK_NULL); |
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1107 if (!context.check(stream, classpath_index)) { |
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1108 return h; // NULL |
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1109 } |
0 | 1110 if (stream != NULL) { |
1111 break; | |
1112 } | |
1113 e = e->next(); | |
1114 ++classpath_index; | |
1115 } | |
1116 } | |
1117 | |
1118 if (stream != NULL) { | |
1119 // class file found, parse it | |
1120 ClassFileParser parser(stream); | |
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1121 ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data(); |
0 | 1122 Handle protection_domain; |
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1123 TempNewSymbol parsed_name = NULL; |
0 | 1124 instanceKlassHandle result = parser.parseClassFile(h_name, |
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1125 loader_data, |
0 | 1126 protection_domain, |
1127 parsed_name, | |
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1128 context.should_verify(classpath_index), |
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1129 THREAD); |
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1130 if (HAS_PENDING_EXCEPTION) { |
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1131 ResourceMark rm; |
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1132 if (DumpSharedSpaces) { |
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1133 tty->print_cr("Preload Error: Failed to load %s", class_name); |
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1134 } |
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1135 return h; |
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1136 } |
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1137 h = context.record_result(classpath_index, e, result, THREAD); |
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1138 } else { |
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1139 if (DumpSharedSpaces) { |
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1140 tty->print_cr("Preload Warning: Cannot find %s", class_name); |
0 | 1141 } |
1142 } | |
1143 | |
1144 return h; | |
1145 } | |
1146 | |
1147 | |
6197 | 1148 void ClassLoader::create_package_info_table(HashtableBucket<mtClass> *t, int length, |
0 | 1149 int number_of_entries) { |
1150 assert(_package_hash_table == NULL, "One package info table allowed."); | |
6197 | 1151 assert(length == package_hash_table_size * sizeof(HashtableBucket<mtClass>), |
0 | 1152 "bad shared package info size."); |
1153 _package_hash_table = new PackageHashtable(package_hash_table_size, t, | |
1154 number_of_entries); | |
1155 } | |
1156 | |
1157 | |
1158 void ClassLoader::create_package_info_table() { | |
1159 assert(_package_hash_table == NULL, "shouldn't have one yet"); | |
1160 _package_hash_table = new PackageHashtable(package_hash_table_size); | |
1161 } | |
1162 | |
1163 | |
1164 // Initialize the class loader's access to methods in libzip. Parse and | |
1165 // process the boot classpath into a list ClassPathEntry objects. Once | |
1166 // this list has been created, it must not change order (see class PackageInfo) | |
1167 // it can be appended to and is by jvmti and the kernel vm. | |
1168 | |
1169 void ClassLoader::initialize() { | |
1170 assert(_package_hash_table == NULL, "should have been initialized by now."); | |
1171 EXCEPTION_MARK; | |
1172 | |
1173 if (UsePerfData) { | |
1174 // jvmstat performance counters | |
1175 NEWPERFTICKCOUNTER(_perf_accumulated_time, SUN_CLS, "time"); | |
1176 NEWPERFTICKCOUNTER(_perf_class_init_time, SUN_CLS, "classInitTime"); | |
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1177 NEWPERFTICKCOUNTER(_perf_class_init_selftime, SUN_CLS, "classInitTime.self"); |
0 | 1178 NEWPERFTICKCOUNTER(_perf_class_verify_time, SUN_CLS, "classVerifyTime"); |
875
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1179 NEWPERFTICKCOUNTER(_perf_class_verify_selftime, SUN_CLS, "classVerifyTime.self"); |
0 | 1180 NEWPERFTICKCOUNTER(_perf_class_link_time, SUN_CLS, "classLinkedTime"); |
875
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1181 NEWPERFTICKCOUNTER(_perf_class_link_selftime, SUN_CLS, "classLinkedTime.self"); |
0 | 1182 NEWPERFEVENTCOUNTER(_perf_classes_inited, SUN_CLS, "initializedClasses"); |
1183 NEWPERFEVENTCOUNTER(_perf_classes_linked, SUN_CLS, "linkedClasses"); | |
875
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1184 NEWPERFEVENTCOUNTER(_perf_classes_verified, SUN_CLS, "verifiedClasses"); |
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1185 |
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1186 NEWPERFTICKCOUNTER(_perf_class_parse_time, SUN_CLS, "parseClassTime"); |
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1187 NEWPERFTICKCOUNTER(_perf_class_parse_selftime, SUN_CLS, "parseClassTime.self"); |
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1188 NEWPERFTICKCOUNTER(_perf_sys_class_lookup_time, SUN_CLS, "lookupSysClassTime"); |
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1189 NEWPERFTICKCOUNTER(_perf_shared_classload_time, SUN_CLS, "sharedClassLoadTime"); |
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1190 NEWPERFTICKCOUNTER(_perf_sys_classload_time, SUN_CLS, "sysClassLoadTime"); |
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1191 NEWPERFTICKCOUNTER(_perf_app_classload_time, SUN_CLS, "appClassLoadTime"); |
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1192 NEWPERFTICKCOUNTER(_perf_app_classload_selftime, SUN_CLS, "appClassLoadTime.self"); |
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1193 NEWPERFEVENTCOUNTER(_perf_app_classload_count, SUN_CLS, "appClassLoadCount"); |
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1194 NEWPERFTICKCOUNTER(_perf_define_appclasses, SUN_CLS, "defineAppClasses"); |
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1195 NEWPERFTICKCOUNTER(_perf_define_appclass_time, SUN_CLS, "defineAppClassTime"); |
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1196 NEWPERFTICKCOUNTER(_perf_define_appclass_selftime, SUN_CLS, "defineAppClassTime.self"); |
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1197 NEWPERFBYTECOUNTER(_perf_app_classfile_bytes_read, SUN_CLS, "appClassBytes"); |
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1198 NEWPERFBYTECOUNTER(_perf_sys_classfile_bytes_read, SUN_CLS, "sysClassBytes"); |
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1199 |
0 | 1200 |
1201 // The following performance counters are added for measuring the impact | |
1202 // of the bug fix of 6365597. They are mainly focused on finding out | |
1203 // the behavior of system & user-defined classloader lock, whether | |
1204 // ClassLoader.loadClass/findClass is being called synchronized or not. | |
1205 // Also two additional counters are created to see whether 'UnsyncloadClass' | |
1206 // flag is being set or not and how many times load_instance_class call | |
1207 // fails with linkageError etc. | |
1208 NEWPERFEVENTCOUNTER(_sync_systemLoaderLockContentionRate, SUN_CLS, | |
1209 "systemLoaderLockContentionRate"); | |
1210 NEWPERFEVENTCOUNTER(_sync_nonSystemLoaderLockContentionRate, SUN_CLS, | |
1211 "nonSystemLoaderLockContentionRate"); | |
1212 NEWPERFEVENTCOUNTER(_sync_JVMFindLoadedClassLockFreeCounter, SUN_CLS, | |
1213 "jvmFindLoadedClassNoLockCalls"); | |
1214 NEWPERFEVENTCOUNTER(_sync_JVMDefineClassLockFreeCounter, SUN_CLS, | |
1215 "jvmDefineClassNoLockCalls"); | |
1216 | |
1217 NEWPERFEVENTCOUNTER(_sync_JNIDefineClassLockFreeCounter, SUN_CLS, | |
1218 "jniDefineClassNoLockCalls"); | |
1219 | |
1220 NEWPERFEVENTCOUNTER(_unsafe_defineClassCallCounter, SUN_CLS, | |
1221 "unsafeDefineClassCalls"); | |
1222 | |
1223 NEWPERFEVENTCOUNTER(_isUnsyncloadClass, SUN_CLS, "isUnsyncloadClassSet"); | |
1224 NEWPERFEVENTCOUNTER(_load_instance_class_failCounter, SUN_CLS, | |
1225 "loadInstanceClassFailRate"); | |
1226 | |
1227 // increment the isUnsyncloadClass counter if UnsyncloadClass is set. | |
1228 if (UnsyncloadClass) { | |
1229 _isUnsyncloadClass->inc(); | |
1230 } | |
1231 } | |
1232 | |
1233 // lookup zip library entry points | |
1234 load_zip_library(); | |
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1235 #if INCLUDE_CDS |
0 | 1236 // initialize search path |
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1237 if (DumpSharedSpaces) { |
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1238 _shared_paths_misc_info = SharedClassUtil::allocate_shared_paths_misc_info(); |
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1239 } |
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1240 #endif |
0 | 1241 setup_bootstrap_search_path(); |
1242 if (LazyBootClassLoader) { | |
1243 // set up meta index which makes boot classpath initialization lazier | |
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1244 setup_bootstrap_meta_index(); |
0 | 1245 } |
1246 } | |
1247 | |
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1248 #if INCLUDE_CDS |
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1249 void ClassLoader::initialize_shared_path() { |
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1250 if (DumpSharedSpaces) { |
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1251 ClassLoaderExt::setup_search_paths(); |
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1252 _shared_paths_misc_info->write_jint(0); // see comments in SharedPathsMiscInfo::check() |
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1253 } |
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1254 } |
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1255 #endif |
0 | 1256 |
1257 jlong ClassLoader::classloader_time_ms() { | |
1258 return UsePerfData ? | |
1259 Management::ticks_to_ms(_perf_accumulated_time->get_value()) : -1; | |
1260 } | |
1261 | |
1262 jlong ClassLoader::class_init_count() { | |
1263 return UsePerfData ? _perf_classes_inited->get_value() : -1; | |
1264 } | |
1265 | |
1266 jlong ClassLoader::class_init_time_ms() { | |
1267 return UsePerfData ? | |
1268 Management::ticks_to_ms(_perf_class_init_time->get_value()) : -1; | |
1269 } | |
1270 | |
1271 jlong ClassLoader::class_verify_time_ms() { | |
1272 return UsePerfData ? | |
1273 Management::ticks_to_ms(_perf_class_verify_time->get_value()) : -1; | |
1274 } | |
1275 | |
1276 jlong ClassLoader::class_link_count() { | |
1277 return UsePerfData ? _perf_classes_linked->get_value() : -1; | |
1278 } | |
1279 | |
1280 jlong ClassLoader::class_link_time_ms() { | |
1281 return UsePerfData ? | |
1282 Management::ticks_to_ms(_perf_class_link_time->get_value()) : -1; | |
1283 } | |
1284 | |
1285 int ClassLoader::compute_Object_vtable() { | |
1286 // hardwired for JDK1.2 -- would need to duplicate class file parsing | |
1287 // code to determine actual value from file | |
1288 // Would be value '11' if finals were in vtable | |
1289 int JDK_1_2_Object_vtable_size = 5; | |
1290 return JDK_1_2_Object_vtable_size * vtableEntry::size(); | |
1291 } | |
1292 | |
1293 | |
1294 void classLoader_init() { | |
1295 ClassLoader::initialize(); | |
1296 } | |
1297 | |
1298 | |
20376 | 1299 bool ClassLoader::get_canonical_path(const char* orig, char* out, int len) { |
0 | 1300 assert(orig != NULL && out != NULL && len > 0, "bad arguments"); |
1301 if (CanonicalizeEntry != NULL) { | |
20376 | 1302 JavaThread* THREAD = JavaThread::current(); |
1303 JNIEnv* env = THREAD->jni_environment(); | |
1304 ResourceMark rm(THREAD); | |
1305 | |
1306 // os::native_path writes into orig_copy | |
1307 char* orig_copy = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, strlen(orig)+1); | |
1308 strcpy(orig_copy, orig); | |
1309 if ((CanonicalizeEntry)(env, os::native_path(orig_copy), out, len) < 0) { | |
0 | 1310 return false; |
1311 } | |
1312 } else { | |
1313 // On JDK 1.2.2 the Canonicalize does not exist, so just do nothing | |
1314 strncpy(out, orig, len); | |
1315 out[len - 1] = '\0'; | |
1316 } | |
1317 return true; | |
1318 } | |
1319 | |
1320 #ifndef PRODUCT | |
1321 | |
1322 void ClassLoader::verify() { | |
1323 _package_hash_table->verify(); | |
1324 } | |
1325 | |
1326 | |
1327 // CompileTheWorld | |
1328 // | |
1329 // Iterates over all class path entries and forces compilation of all methods | |
1330 // in all classes found. Currently, only zip/jar archives are searched. | |
1331 // | |
1332 // The classes are loaded by the Java level bootstrap class loader, and the | |
1333 // initializer is called. If DelayCompilationDuringStartup is true (default), | |
1334 // the interpreter will run the initialization code. Note that forcing | |
1335 // initialization in this way could potentially lead to initialization order | |
1336 // problems, in which case we could just force the initialization bit to be set. | |
1337 | |
1338 | |
1339 // We need to iterate over the contents of a zip/jar file, so we replicate the | |
1340 // jzcell and jzfile definitions from zip_util.h but rename jzfile to real_jzfile, | |
1341 // since jzfile already has a void* definition. | |
1342 // | |
1343 // Note that this is only used in debug mode. | |
1344 // | |
1345 // HotSpot integration note: | |
1346 // Matches zip_util.h 1.14 99/06/01 from jdk1.3 beta H build | |
1347 | |
1348 | |
1349 // JDK 1.3 version | |
1350 typedef struct real_jzentry13 { /* Zip file entry */ | |
1351 char *name; /* entry name */ | |
1352 jint time; /* modification time */ | |
1353 jint size; /* size of uncompressed data */ | |
1354 jint csize; /* size of compressed data (zero if uncompressed) */ | |
1355 jint crc; /* crc of uncompressed data */ | |
1356 char *comment; /* optional zip file comment */ | |
1357 jbyte *extra; /* optional extra data */ | |
1358 jint pos; /* position of LOC header (if negative) or data */ | |
1359 } real_jzentry13; | |
1360 | |
1361 typedef struct real_jzfile13 { /* Zip file */ | |
1362 char *name; /* zip file name */ | |
1363 jint refs; /* number of active references */ | |
1364 jint fd; /* open file descriptor */ | |
1365 void *lock; /* read lock */ | |
1366 char *comment; /* zip file comment */ | |
1367 char *msg; /* zip error message */ | |
1368 void *entries; /* array of hash cells */ | |
1369 jint total; /* total number of entries */ | |
1370 unsigned short *table; /* Hash chain heads: indexes into entries */ | |
1371 jint tablelen; /* number of hash eads */ | |
1372 real_jzfile13 *next; /* next zip file in search list */ | |
1373 jzentry *cache; /* we cache the most recently freed jzentry */ | |
1374 /* Information on metadata names in META-INF directory */ | |
1375 char **metanames; /* array of meta names (may have null names) */ | |
1376 jint metacount; /* number of slots in metanames array */ | |
1377 /* If there are any per-entry comments, they are in the comments array */ | |
1378 char **comments; | |
1379 } real_jzfile13; | |
1380 | |
1381 // JDK 1.2 version | |
1382 typedef struct real_jzentry12 { /* Zip file entry */ | |
1383 char *name; /* entry name */ | |
1384 jint time; /* modification time */ | |
1385 jint size; /* size of uncompressed data */ | |
1386 jint csize; /* size of compressed data (zero if uncompressed) */ | |
1387 jint crc; /* crc of uncompressed data */ | |
1388 char *comment; /* optional zip file comment */ | |
1389 jbyte *extra; /* optional extra data */ | |
1390 jint pos; /* position of LOC header (if negative) or data */ | |
1391 struct real_jzentry12 *next; /* next entry in hash table */ | |
1392 } real_jzentry12; | |
1393 | |
1394 typedef struct real_jzfile12 { /* Zip file */ | |
1395 char *name; /* zip file name */ | |
1396 jint refs; /* number of active references */ | |
1397 jint fd; /* open file descriptor */ | |
1398 void *lock; /* read lock */ | |
1399 char *comment; /* zip file comment */ | |
1400 char *msg; /* zip error message */ | |
1401 real_jzentry12 *entries; /* array of zip entries */ | |
1402 jint total; /* total number of entries */ | |
1403 real_jzentry12 **table; /* hash table of entries */ | |
1404 jint tablelen; /* number of buckets */ | |
1405 jzfile *next; /* next zip file in search list */ | |
1406 } real_jzfile12; | |
1407 | |
1408 | |
1409 void ClassPathDirEntry::compile_the_world(Handle loader, TRAPS) { | |
1410 // For now we only compile all methods in all classes in zip/jar files | |
1411 tty->print_cr("CompileTheWorld : Skipped classes in %s", _dir); | |
1412 tty->cr(); | |
1413 } | |
1414 | |
1415 | |
1416 bool ClassPathDirEntry::is_rt_jar() { | |
1417 return false; | |
1418 } | |
1419 | |
1420 void ClassPathZipEntry::compile_the_world(Handle loader, TRAPS) { | |
1421 if (JDK_Version::is_jdk12x_version()) { | |
1422 compile_the_world12(loader, THREAD); | |
1423 } else { | |
1424 compile_the_world13(loader, THREAD); | |
1425 } | |
1426 if (HAS_PENDING_EXCEPTION) { | |
1427 if (PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
1428 CLEAR_PENDING_EXCEPTION; | |
1429 tty->print_cr("\nCompileTheWorld : Ran out of memory\n"); | |
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1430 tty->print_cr("Increase class metadata storage if a limit was set"); |
0 | 1431 } else { |
1432 tty->print_cr("\nCompileTheWorld : Unexpected exception occurred\n"); | |
1433 } | |
1434 } | |
1435 } | |
1436 | |
1437 // Version that works for JDK 1.3.x | |
1438 void ClassPathZipEntry::compile_the_world13(Handle loader, TRAPS) { | |
1439 real_jzfile13* zip = (real_jzfile13*) _zip; | |
1440 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
1441 tty->cr(); | |
1442 // Iterate over all entries in zip file | |
1443 for (int n = 0; ; n++) { | |
1444 real_jzentry13 * ze = (real_jzentry13 *)((*GetNextEntry)(_zip, n)); | |
1445 if (ze == NULL) break; | |
1446 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
1447 } | |
1448 } | |
1449 | |
1450 | |
1451 // Version that works for JDK 1.2.x | |
1452 void ClassPathZipEntry::compile_the_world12(Handle loader, TRAPS) { | |
1453 real_jzfile12* zip = (real_jzfile12*) _zip; | |
1454 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
1455 tty->cr(); | |
1456 // Iterate over all entries in zip file | |
1457 for (int n = 0; ; n++) { | |
1458 real_jzentry12 * ze = (real_jzentry12 *)((*GetNextEntry)(_zip, n)); | |
1459 if (ze == NULL) break; | |
1460 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
1461 } | |
1462 } | |
1463 | |
1464 bool ClassPathZipEntry::is_rt_jar() { | |
1465 if (JDK_Version::is_jdk12x_version()) { | |
1466 return is_rt_jar12(); | |
1467 } else { | |
1468 return is_rt_jar13(); | |
1469 } | |
1470 } | |
1471 | |
1472 // JDK 1.3 version | |
1473 bool ClassPathZipEntry::is_rt_jar13() { | |
1474 real_jzfile13* zip = (real_jzfile13*) _zip; | |
1475 int len = (int)strlen(zip->name); | |
1476 // Check whether zip name ends in "rt.jar" | |
1477 // This will match other archives named rt.jar as well, but this is | |
1478 // only used for debugging. | |
1479 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
1480 } | |
1481 | |
1482 // JDK 1.2 version | |
1483 bool ClassPathZipEntry::is_rt_jar12() { | |
1484 real_jzfile12* zip = (real_jzfile12*) _zip; | |
1485 int len = (int)strlen(zip->name); | |
1486 // Check whether zip name ends in "rt.jar" | |
1487 // This will match other archives named rt.jar as well, but this is | |
1488 // only used for debugging. | |
1489 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
1490 } | |
1491 | |
1492 void LazyClassPathEntry::compile_the_world(Handle loader, TRAPS) { | |
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1493 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1494 if (cpe != NULL) { |
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1495 cpe->compile_the_world(loader, CHECK); |
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1496 } |
0 | 1497 } |
1498 | |
1499 bool LazyClassPathEntry::is_rt_jar() { | |
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1500 Thread* THREAD = Thread::current(); |
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1501 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1502 return (cpe != NULL) ? cpe->is_jar_file() : false; |
0 | 1503 } |
1504 | |
1505 void ClassLoader::compile_the_world() { | |
1506 EXCEPTION_MARK; | |
1507 HandleMark hm(THREAD); | |
1508 ResourceMark rm(THREAD); | |
1509 // Make sure we don't run with background compilation | |
1510 BackgroundCompilation = false; | |
1511 // Find bootstrap loader | |
1512 Handle system_class_loader (THREAD, SystemDictionary::java_system_loader()); | |
1513 // Iterate over all bootstrap class path entries | |
1514 ClassPathEntry* e = _first_entry; | |
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1515 jlong start = os::javaTimeMillis(); |
0 | 1516 while (e != NULL) { |
1517 // We stop at rt.jar, unless it is the first bootstrap path entry | |
1518 if (e->is_rt_jar() && e != _first_entry) break; | |
1519 e->compile_the_world(system_class_loader, CATCH); | |
1520 e = e->next(); | |
1521 } | |
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1522 jlong end = os::javaTimeMillis(); |
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|
1523 tty->print_cr("CompileTheWorld : Done (%d classes, %d methods, " JLONG_FORMAT " ms)", |
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1524 _compile_the_world_class_counter, _compile_the_world_method_counter, (end - start)); |
0 | 1525 { |
1526 // Print statistics as if before normal exit: | |
1527 extern void print_statistics(); | |
1528 print_statistics(); | |
1529 } | |
1530 vm_exit(0); | |
1531 } | |
1532 | |
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1533 int ClassLoader::_compile_the_world_class_counter = 0; |
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1534 int ClassLoader::_compile_the_world_method_counter = 0; |
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|
1535 static int _codecache_sweep_counter = 0; |
0 | 1536 |
2257 | 1537 // Filter out all exceptions except OOMs |
1538 static void clear_pending_exception_if_not_oom(TRAPS) { | |
1539 if (HAS_PENDING_EXCEPTION && | |
1540 !PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
1541 CLEAR_PENDING_EXCEPTION; | |
1542 } | |
1543 // The CHECK at the caller will propagate the exception out | |
1544 } | |
1545 | |
12255
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|
1546 /** |
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|
1547 * Returns if the given method should be compiled when doing compile-the-world. |
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|
1548 * |
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1549 * TODO: This should be a private method in a CompileTheWorld class. |
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|
1550 */ |
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|
1551 static bool can_be_compiled(methodHandle m, int comp_level) { |
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|
1552 assert(CompileTheWorld, "must be"); |
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|
1553 |
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|
1554 // It's not valid to compile a native wrapper for MethodHandle methods |
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1555 // that take a MemberName appendix since the bytecode signature is not |
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|
1556 // correct. |
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|
1557 vmIntrinsics::ID iid = m->intrinsic_id(); |
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|
1558 if (MethodHandles::is_signature_polymorphic(iid) && MethodHandles::has_member_arg(iid)) { |
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|
1559 return false; |
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|
1560 } |
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|
1561 |
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|
1562 return CompilationPolicy::can_be_compiled(m, comp_level); |
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|
1563 } |
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|
1564 |
0 | 1565 void ClassLoader::compile_the_world_in(char* name, Handle loader, TRAPS) { |
1566 int len = (int)strlen(name); | |
1567 if (len > 6 && strcmp(".class", name + len - 6) == 0) { | |
1568 // We have a .class file | |
1569 char buffer[2048]; | |
1570 strncpy(buffer, name, len - 6); | |
1571 buffer[len-6] = 0; | |
1572 // If the file has a period after removing .class, it's not really a | |
1573 // valid class file. The class loader will check everything else. | |
1574 if (strchr(buffer, '.') == NULL) { | |
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|
1575 _compile_the_world_class_counter++; |
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|
1576 if (_compile_the_world_class_counter > CompileTheWorldStopAt) return; |
723 | 1577 |
1578 // Construct name without extension | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2139
diff
changeset
|
1579 TempNewSymbol sym = SymbolTable::new_symbol(buffer, CHECK); |
723 | 1580 // Use loader to load and initialize class |
6725
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6197
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|
1581 Klass* ik = SystemDictionary::resolve_or_null(sym, loader, Handle(), THREAD); |
723 | 1582 instanceKlassHandle k (THREAD, ik); |
1583 if (k.not_null() && !HAS_PENDING_EXCEPTION) { | |
1584 k->initialize(THREAD); | |
1585 } | |
1586 bool exception_occurred = HAS_PENDING_EXCEPTION; | |
2257 | 1587 clear_pending_exception_if_not_oom(CHECK); |
723 | 1588 if (CompileTheWorldPreloadClasses && k.not_null()) { |
6725
da91efe96a93
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6197
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|
1589 ConstantPool::preload_and_initialize_all_classes(k->constants(), THREAD); |
723 | 1590 if (HAS_PENDING_EXCEPTION) { |
1591 // If something went wrong in preloading we just ignore it | |
2257 | 1592 clear_pending_exception_if_not_oom(CHECK); |
9150
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|
1593 tty->print_cr("Preloading failed for (%d) %s", _compile_the_world_class_counter, buffer); |
0 | 1594 } |
723 | 1595 } |
1596 | |
9150
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|
1597 if (_compile_the_world_class_counter >= CompileTheWorldStartAt) { |
2323
bc6b27fb3568
6725983: Assertion "method->method_holder())->is_not_initialized(),"method holder must be initialized"
never
parents:
2257
diff
changeset
|
1598 if (k.is_null() || exception_occurred) { |
0 | 1599 // If something went wrong (e.g. ExceptionInInitializerError) we skip this class |
9150
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|
1600 tty->print_cr("CompileTheWorld (%d) : Skipping %s", _compile_the_world_class_counter, buffer); |
0 | 1601 } else { |
9150
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|
1602 tty->print_cr("CompileTheWorld (%d) : %s", _compile_the_world_class_counter, buffer); |
0 | 1603 // Preload all classes to get around uncommon traps |
1604 // Iterate over all methods in class | |
10200
d1c9384eecb4
8012322: Tiered: CompilationPolicy::can_be_compiled(CompLevel_all) mistakenly return false
iignatyev
parents:
9150
diff
changeset
|
1605 int comp_level = CompilationPolicy::policy()->initial_compile_level(); |
0 | 1606 for (int n = 0; n < k->methods()->length(); n++) { |
6725
da91efe96a93
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6197
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|
1607 methodHandle m (THREAD, k->methods()->at(n)); |
12255
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12135
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|
1608 if (can_be_compiled(m, comp_level)) { |
1188
99af867dfa05
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1142
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|
1609 if (++_codecache_sweep_counter == CompileTheWorldSafepointInterval) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
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parents:
1142
diff
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|
1610 // Give sweeper a chance to keep up with CTW |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
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1142
diff
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|
1611 VM_ForceSafepoint op; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
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1142
diff
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|
1612 VMThread::execute(&op); |
99af867dfa05
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1142
diff
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|
1613 _codecache_sweep_counter = 0; |
99af867dfa05
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1142
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|
1614 } |
0 | 1615 // Force compilation |
10200
d1c9384eecb4
8012322: Tiered: CompilationPolicy::can_be_compiled(CompLevel_all) mistakenly return false
iignatyev
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9150
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|
1616 CompileBroker::compile_method(m, InvocationEntryBci, comp_level, |
0 | 1617 methodHandle(), 0, "CTW", THREAD); |
1618 if (HAS_PENDING_EXCEPTION) { | |
2257 | 1619 clear_pending_exception_if_not_oom(CHECK); |
12255
3a4e6c929bf3
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12135
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|
1620 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
9150
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|
1621 } else { |
b8b081e53312
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7185
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|
1622 _compile_the_world_method_counter++; |
0 | 1623 } |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
2426
diff
changeset
|
1624 if (TieredCompilation && TieredStopAtLevel >= CompLevel_full_optimization) { |
723 | 1625 // Clobber the first compile and force second tier compilation |
1626 nmethod* nm = m->code(); | |
20433
2e6106d44079
8057750: CTW should not make MH intrinsics not entrant
iveresov
parents:
20376
diff
changeset
|
1627 if (nm != NULL && !m->is_method_handle_intrinsic()) { |
723 | 1628 // Throw out the code so that the code cache doesn't fill up |
1629 nm->make_not_entrant(); | |
1630 m->clear_code(); | |
1631 } | |
1783 | 1632 CompileBroker::compile_method(m, InvocationEntryBci, CompLevel_full_optimization, |
723 | 1633 methodHandle(), 0, "CTW", THREAD); |
1634 if (HAS_PENDING_EXCEPTION) { | |
2257 | 1635 clear_pending_exception_if_not_oom(CHECK); |
12255
3a4e6c929bf3
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twisti
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12135
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|
1636 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
9150
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|
1637 } else { |
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7185
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|
1638 _compile_the_world_method_counter++; |
723 | 1639 } |
0 | 1640 } |
12255
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
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12135
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|
1641 } else { |
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
twisti
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12135
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|
1642 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
0 | 1643 } |
723 | 1644 |
1645 nmethod* nm = m->code(); | |
20433
2e6106d44079
8057750: CTW should not make MH intrinsics not entrant
iveresov
parents:
20376
diff
changeset
|
1646 if (nm != NULL && !m->is_method_handle_intrinsic()) { |
723 | 1647 // Throw out the code so that the code cache doesn't fill up |
1648 nm->make_not_entrant(); | |
1649 m->clear_code(); | |
0 | 1650 } |
1651 } | |
1652 } | |
1653 } | |
1654 } | |
1655 } | |
1656 } | |
1657 | |
1658 #endif //PRODUCT | |
2139
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
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diff
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|
1659 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
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1980
diff
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|
1660 // Please keep following two functions at end of this file. With them placed at top or in middle of the file, |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
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1980
diff
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|
1661 // 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
|
1662 void PerfClassTraceTime::initialize() { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
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1980
diff
changeset
|
1663 if (!UsePerfData) return; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1664 |
75efcee5ac47
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minqi
parents:
1980
diff
changeset
|
1665 if (_eventp != NULL) { |
75efcee5ac47
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1980
diff
changeset
|
1666 // increment the event counter |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
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diff
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|
1667 _eventp->inc(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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|
1668 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1669 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
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1980
diff
changeset
|
1670 // stop the current active thread-local timer to measure inclusive time |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1671 _prev_active_event = -1; |
75efcee5ac47
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diff
changeset
|
1672 for (int i=0; i < EVENT_TYPE_COUNT; i++) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1673 if (_timers[i].is_active()) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1674 assert(_prev_active_event == -1, "should have only one active timer"); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1675 _prev_active_event = i; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1676 _timers[i].stop(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1677 } |
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 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1680 if (_recursion_counters == NULL || (_recursion_counters[_event_type])++ == 0) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1681 // start the inclusive timer if not recursively called |
75efcee5ac47
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minqi
parents:
1980
diff
changeset
|
1682 _t.start(); |
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 |
75efcee5ac47
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minqi
parents:
1980
diff
changeset
|
1685 // start thread-local timer of the given event type |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1686 if (!_timers[_event_type].is_active()) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1687 _timers[_event_type].start(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1688 } |
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 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1691 PerfClassTraceTime::~PerfClassTraceTime() { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1692 if (!UsePerfData) return; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
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1693 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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1694 // stop the thread-local timer as the event completes |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
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1695 // 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
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1696 _timers[_event_type].stop(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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1697 jlong selftime = _timers[_event_type].ticks(); |
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
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1699 if (_prev_active_event >= 0) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
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1700 _timers[_prev_active_event].start(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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1701 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
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1702 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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1703 if (_recursion_counters != NULL && --(_recursion_counters[_event_type]) > 0) return; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
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1704 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1705 // increment the counters only on the leaf call |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
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1980
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1706 _t.stop(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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|
1707 _timep->inc(_t.ticks()); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
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1708 if (_selftimep != NULL) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
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1709 _selftimep->inc(selftime); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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|
1710 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1711 // 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
|
1712 ClassLoader::perf_accumulated_time()->inc(selftime); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1713 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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1714 // reset the timer |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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1715 _timers[_event_type].reset(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
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1716 } |