Mercurial > hg > graal-compiler
annotate src/share/vm/classfile/classLoader.cpp @ 20376:bb239308be67
8056971: Minor class loading clean-up
Summary: Misplacement of #if INCLUE_CDS, typos, unnecessary C string duplication
Reviewed-by: dholmes, ccheung
author | iklam |
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date | Tue, 02 Sep 2014 14:02:57 -0700 |
parents | 6e0cb14ce59b |
children | 2e6106d44079 8cb56c8cb30d |
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); | |
93 | |
94 static ZipOpen_t ZipOpen = NULL; | |
95 static ZipClose_t ZipClose = NULL; | |
96 static FindEntry_t FindEntry = NULL; | |
97 static ReadEntry_t ReadEntry = NULL; | |
98 static ReadMappedEntry_t ReadMappedEntry = NULL; | |
99 static GetNextEntry_t GetNextEntry = NULL; | |
100 static canonicalize_fn_t CanonicalizeEntry = NULL; | |
101 | |
102 // Globals | |
103 | |
104 PerfCounter* ClassLoader::_perf_accumulated_time = NULL; | |
105 PerfCounter* ClassLoader::_perf_classes_inited = NULL; | |
106 PerfCounter* ClassLoader::_perf_class_init_time = NULL; | |
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107 PerfCounter* ClassLoader::_perf_class_init_selftime = NULL; |
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108 PerfCounter* ClassLoader::_perf_classes_verified = NULL; |
0 | 109 PerfCounter* ClassLoader::_perf_class_verify_time = NULL; |
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110 PerfCounter* ClassLoader::_perf_class_verify_selftime = NULL; |
0 | 111 PerfCounter* ClassLoader::_perf_classes_linked = NULL; |
112 PerfCounter* ClassLoader::_perf_class_link_time = NULL; | |
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113 PerfCounter* ClassLoader::_perf_class_link_selftime = NULL; |
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114 PerfCounter* ClassLoader::_perf_class_parse_time = NULL; |
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115 PerfCounter* ClassLoader::_perf_class_parse_selftime = NULL; |
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116 PerfCounter* ClassLoader::_perf_sys_class_lookup_time = NULL; |
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117 PerfCounter* ClassLoader::_perf_shared_classload_time = NULL; |
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118 PerfCounter* ClassLoader::_perf_sys_classload_time = NULL; |
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119 PerfCounter* ClassLoader::_perf_app_classload_time = NULL; |
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120 PerfCounter* ClassLoader::_perf_app_classload_selftime = NULL; |
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121 PerfCounter* ClassLoader::_perf_app_classload_count = NULL; |
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122 PerfCounter* ClassLoader::_perf_define_appclasses = NULL; |
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123 PerfCounter* ClassLoader::_perf_define_appclass_time = NULL; |
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124 PerfCounter* ClassLoader::_perf_define_appclass_selftime = NULL; |
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125 PerfCounter* ClassLoader::_perf_app_classfile_bytes_read = NULL; |
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126 PerfCounter* ClassLoader::_perf_sys_classfile_bytes_read = NULL; |
0 | 127 PerfCounter* ClassLoader::_sync_systemLoaderLockContentionRate = NULL; |
128 PerfCounter* ClassLoader::_sync_nonSystemLoaderLockContentionRate = NULL; | |
129 PerfCounter* ClassLoader::_sync_JVMFindLoadedClassLockFreeCounter = NULL; | |
130 PerfCounter* ClassLoader::_sync_JVMDefineClassLockFreeCounter = NULL; | |
131 PerfCounter* ClassLoader::_sync_JNIDefineClassLockFreeCounter = NULL; | |
132 PerfCounter* ClassLoader::_unsafe_defineClassCallCounter = NULL; | |
133 PerfCounter* ClassLoader::_isUnsyncloadClass = NULL; | |
134 PerfCounter* ClassLoader::_load_instance_class_failCounter = NULL; | |
135 | |
136 ClassPathEntry* ClassLoader::_first_entry = NULL; | |
137 ClassPathEntry* ClassLoader::_last_entry = NULL; | |
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138 int ClassLoader::_num_entries = 0; |
0 | 139 PackageHashtable* ClassLoader::_package_hash_table = NULL; |
140 | |
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141 #if INCLUDE_CDS |
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142 SharedPathsMiscInfo* ClassLoader::_shared_paths_misc_info = NULL; |
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143 #endif |
0 | 144 // helper routines |
145 bool string_starts_with(const char* str, const char* str_to_find) { | |
146 size_t str_len = strlen(str); | |
147 size_t str_to_find_len = strlen(str_to_find); | |
148 if (str_to_find_len > str_len) { | |
149 return false; | |
150 } | |
151 return (strncmp(str, str_to_find, str_to_find_len) == 0); | |
152 } | |
153 | |
154 bool string_ends_with(const char* str, const char* str_to_find) { | |
155 size_t str_len = strlen(str); | |
156 size_t str_to_find_len = strlen(str_to_find); | |
157 if (str_to_find_len > str_len) { | |
158 return false; | |
159 } | |
160 return (strncmp(str + (str_len - str_to_find_len), str_to_find, str_to_find_len) == 0); | |
161 } | |
162 | |
163 | |
164 MetaIndex::MetaIndex(char** meta_package_names, int num_meta_package_names) { | |
165 if (num_meta_package_names == 0) { | |
166 _meta_package_names = NULL; | |
167 _num_meta_package_names = 0; | |
168 } else { | |
6197 | 169 _meta_package_names = NEW_C_HEAP_ARRAY(char*, num_meta_package_names, mtClass); |
0 | 170 _num_meta_package_names = num_meta_package_names; |
171 memcpy(_meta_package_names, meta_package_names, num_meta_package_names * sizeof(char*)); | |
172 } | |
173 } | |
174 | |
175 | |
176 MetaIndex::~MetaIndex() { | |
6197 | 177 FREE_C_HEAP_ARRAY(char*, _meta_package_names, mtClass); |
0 | 178 } |
179 | |
180 | |
181 bool MetaIndex::may_contain(const char* class_name) { | |
182 if ( _num_meta_package_names == 0) { | |
183 return false; | |
184 } | |
185 size_t class_name_len = strlen(class_name); | |
186 for (int i = 0; i < _num_meta_package_names; i++) { | |
187 char* pkg = _meta_package_names[i]; | |
188 size_t pkg_len = strlen(pkg); | |
189 size_t min_len = MIN2(class_name_len, pkg_len); | |
190 if (!strncmp(class_name, pkg, min_len)) { | |
191 return true; | |
192 } | |
193 } | |
194 return false; | |
195 } | |
196 | |
197 | |
198 ClassPathEntry::ClassPathEntry() { | |
199 set_next(NULL); | |
200 } | |
201 | |
202 | |
203 bool ClassPathEntry::is_lazy() { | |
204 return false; | |
205 } | |
206 | |
20376 | 207 ClassPathDirEntry::ClassPathDirEntry(const char* dir) : ClassPathEntry() { |
208 char* copy = NEW_C_HEAP_ARRAY(char, strlen(dir)+1, mtClass); | |
209 strcpy(copy, dir); | |
210 _dir = copy; | |
0 | 211 } |
212 | |
213 | |
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214 ClassFileStream* ClassPathDirEntry::open_stream(const char* name, TRAPS) { |
0 | 215 // construct full path name |
216 char path[JVM_MAXPATHLEN]; | |
217 if (jio_snprintf(path, sizeof(path), "%s%s%s", _dir, os::file_separator(), name) == -1) { | |
218 return NULL; | |
219 } | |
220 // check if file exists | |
221 struct stat st; | |
222 if (os::stat(path, &st) == 0) { | |
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223 #if INCLUDE_CDS |
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224 if (DumpSharedSpaces) { |
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225 // We have already check in ClassLoader::check_shared_classpath() that the directory is empty, so |
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226 // we should never find a file underneath it -- unless user has added a new file while we are running |
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227 // the dump, in which case let's quit! |
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228 ShouldNotReachHere(); |
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229 } |
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230 #endif |
0 | 231 // found file, open it |
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232 int file_handle = os::open(path, 0, 0); |
0 | 233 if (file_handle != -1) { |
234 // read contents into resource array | |
235 u1* buffer = NEW_RESOURCE_ARRAY(u1, st.st_size); | |
236 size_t num_read = os::read(file_handle, (char*) buffer, st.st_size); | |
237 // close file | |
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238 os::close(file_handle); |
0 | 239 // construct ClassFileStream |
240 if (num_read == (size_t)st.st_size) { | |
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241 if (UsePerfData) { |
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242 ClassLoader::perf_sys_classfile_bytes_read()->inc(num_read); |
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243 } |
0 | 244 return new ClassFileStream(buffer, st.st_size, _dir); // Resource allocated |
245 } | |
246 } | |
247 } | |
248 return NULL; | |
249 } | |
250 | |
251 | |
252 ClassPathZipEntry::ClassPathZipEntry(jzfile* zip, const char* zip_name) : ClassPathEntry() { | |
253 _zip = zip; | |
20376 | 254 char *copy = NEW_C_HEAP_ARRAY(char, strlen(zip_name)+1, mtClass); |
255 strcpy(copy, zip_name); | |
256 _zip_name = copy; | |
0 | 257 } |
258 | |
259 ClassPathZipEntry::~ClassPathZipEntry() { | |
260 if (ZipClose != NULL) { | |
261 (*ZipClose)(_zip); | |
262 } | |
6197 | 263 FREE_C_HEAP_ARRAY(char, _zip_name, mtClass); |
0 | 264 } |
265 | |
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266 u1* ClassPathZipEntry::open_entry(const char* name, jint* filesize, bool nul_terminate, TRAPS) { |
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267 // enable call to C land |
0 | 268 JavaThread* thread = JavaThread::current(); |
269 ThreadToNativeFromVM ttn(thread); | |
270 // check whether zip archive contains name | |
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271 jint name_len; |
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272 jzentry* entry = (*FindEntry)(_zip, name, filesize, &name_len); |
0 | 273 if (entry == NULL) return NULL; |
274 u1* buffer; | |
275 char name_buf[128]; | |
276 char* filename; | |
277 if (name_len < 128) { | |
278 filename = name_buf; | |
279 } else { | |
280 filename = NEW_RESOURCE_ARRAY(char, name_len + 1); | |
281 } | |
282 | |
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283 // file found, get pointer to the entry in mmapped jar file. |
0 | 284 if (ReadMappedEntry == NULL || |
285 !(*ReadMappedEntry)(_zip, entry, &buffer, filename)) { | |
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286 // mmapped access not available, perhaps due to compression, |
0 | 287 // read contents into resource array |
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288 int size = (*filesize) + ((nul_terminate) ? 1 : 0); |
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289 buffer = NEW_RESOURCE_ARRAY(u1, size); |
0 | 290 if (!(*ReadEntry)(_zip, entry, buffer, filename)) return NULL; |
291 } | |
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292 |
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293 // return result |
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294 if (nul_terminate) { |
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295 buffer[*filesize] = 0; |
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296 } |
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297 return buffer; |
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298 } |
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299 |
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300 ClassFileStream* ClassPathZipEntry::open_stream(const char* name, TRAPS) { |
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301 jint filesize; |
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302 u1* buffer = open_entry(name, &filesize, false, CHECK_NULL); |
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303 if (buffer == NULL) { |
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304 return NULL; |
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305 } |
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306 if (UsePerfData) { |
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307 ClassLoader::perf_sys_classfile_bytes_read()->inc(filesize); |
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308 } |
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309 return new ClassFileStream(buffer, filesize, _zip_name); // Resource allocated |
0 | 310 } |
311 | |
312 // invoke function for each entry in the zip file | |
313 void ClassPathZipEntry::contents_do(void f(const char* name, void* context), void* context) { | |
314 JavaThread* thread = JavaThread::current(); | |
315 HandleMark handle_mark(thread); | |
316 ThreadToNativeFromVM ttn(thread); | |
317 for (int n = 0; ; n++) { | |
318 jzentry * ze = ((*GetNextEntry)(_zip, n)); | |
319 if (ze == NULL) break; | |
320 (*f)(ze->name, context); | |
321 } | |
322 } | |
323 | |
20376 | 324 LazyClassPathEntry::LazyClassPathEntry(const char* path, const struct stat* st, bool throw_exception) : ClassPathEntry() { |
0 | 325 _path = strdup(path); |
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326 _st = *st; |
0 | 327 _meta_index = NULL; |
328 _resolved_entry = NULL; | |
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329 _has_error = false; |
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330 _throw_exception = throw_exception; |
0 | 331 } |
332 | |
333 bool LazyClassPathEntry::is_jar_file() { | |
334 return ((_st.st_mode & S_IFREG) == S_IFREG); | |
335 } | |
336 | |
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337 ClassPathEntry* LazyClassPathEntry::resolve_entry(TRAPS) { |
0 | 338 if (_resolved_entry != NULL) { |
339 return (ClassPathEntry*) _resolved_entry; | |
340 } | |
341 ClassPathEntry* new_entry = NULL; | |
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342 new_entry = ClassLoader::create_class_path_entry(_path, &_st, false, _throw_exception, CHECK_NULL); |
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343 if (!_throw_exception && new_entry == NULL) { |
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344 assert(!HAS_PENDING_EXCEPTION, "must be"); |
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345 return NULL; |
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346 } |
0 | 347 { |
348 ThreadCritical tc; | |
349 if (_resolved_entry == NULL) { | |
350 _resolved_entry = new_entry; | |
351 return new_entry; | |
352 } | |
353 } | |
354 assert(_resolved_entry != NULL, "bug in MT-safe resolution logic"); | |
355 delete new_entry; | |
356 return (ClassPathEntry*) _resolved_entry; | |
357 } | |
358 | |
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359 ClassFileStream* LazyClassPathEntry::open_stream(const char* name, TRAPS) { |
0 | 360 if (_meta_index != NULL && |
361 !_meta_index->may_contain(name)) { | |
362 return NULL; | |
363 } | |
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364 if (_has_error) { |
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365 return NULL; |
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366 } |
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367 ClassPathEntry* cpe = resolve_entry(THREAD); |
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368 if (cpe == NULL) { |
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369 _has_error = true; |
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370 return NULL; |
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371 } else { |
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372 return cpe->open_stream(name, THREAD); |
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373 } |
0 | 374 } |
375 | |
376 bool LazyClassPathEntry::is_lazy() { | |
377 return true; | |
378 } | |
379 | |
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380 u1* LazyClassPathEntry::open_entry(const char* name, jint* filesize, bool nul_terminate, TRAPS) { |
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381 if (_has_error) { |
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382 return NULL; |
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383 } |
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384 ClassPathEntry* cpe = resolve_entry(THREAD); |
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385 if (cpe == NULL) { |
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386 _has_error = true; |
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387 return NULL; |
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388 } else if (cpe->is_jar_file()) { |
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389 return ((ClassPathZipEntry*)cpe)->open_entry(name, filesize, nul_terminate,THREAD); |
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390 } else { |
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391 ShouldNotReachHere(); |
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392 *filesize = 0; |
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393 return NULL; |
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394 } |
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395 } |
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396 |
0 | 397 static void print_meta_index(LazyClassPathEntry* entry, |
398 GrowableArray<char*>& meta_packages) { | |
399 tty->print("[Meta index for %s=", entry->name()); | |
400 for (int i = 0; i < meta_packages.length(); i++) { | |
401 if (i > 0) tty->print(" "); | |
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402 tty->print("%s", meta_packages.at(i)); |
0 | 403 } |
404 tty->print_cr("]"); | |
405 } | |
406 | |
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407 #if INCLUDE_CDS |
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408 void ClassLoader::exit_with_path_failure(const char* error, const char* message) { |
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409 assert(DumpSharedSpaces, "only called at dump time"); |
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410 tty->print_cr("Hint: enable -XX:+TraceClassPaths to diagnose the failure"); |
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411 vm_exit_during_initialization(error, message); |
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412 } |
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413 #endif |
0 | 414 |
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415 void ClassLoader::trace_class_path(const char* msg, const char* name) { |
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416 if (!TraceClassPaths) { |
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417 return; |
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418 } |
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419 |
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420 if (msg) { |
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421 tty->print("%s", msg); |
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422 } |
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423 if (name) { |
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424 if (strlen(name) < 256) { |
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425 tty->print("%s", name); |
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426 } else { |
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427 // For very long paths, we need to print each character separately, |
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428 // as print_cr() has a length limit |
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429 while (name[0] != '\0') { |
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430 tty->print("%c", name[0]); |
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431 name++; |
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432 } |
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433 } |
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434 } |
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435 if (msg && msg[0] == '[') { |
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436 tty->print_cr("]"); |
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437 } else { |
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438 tty->cr(); |
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439 } |
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440 } |
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441 |
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442 void ClassLoader::setup_bootstrap_meta_index() { |
0 | 443 // Set up meta index which allows us to open boot jars lazily if |
444 // class data sharing is enabled | |
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445 const char* meta_index_path = Arguments::get_meta_index_path(); |
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446 const char* meta_index_dir = Arguments::get_meta_index_dir(); |
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447 setup_meta_index(meta_index_path, meta_index_dir, 0); |
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448 } |
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449 |
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450 void ClassLoader::setup_meta_index(const char* meta_index_path, const char* meta_index_dir, int start_index) { |
0 | 451 const char* known_version = "% VERSION 2"; |
452 FILE* file = fopen(meta_index_path, "r"); | |
453 int line_no = 0; | |
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454 #if INCLUDE_CDS |
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455 if (DumpSharedSpaces) { |
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456 if (file != NULL) { |
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457 _shared_paths_misc_info->add_required_file(meta_index_path); |
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458 } else { |
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459 _shared_paths_misc_info->add_nonexist_path(meta_index_path); |
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460 } |
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461 } |
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462 #endif |
0 | 463 if (file != NULL) { |
464 ResourceMark rm; | |
465 LazyClassPathEntry* cur_entry = NULL; | |
466 GrowableArray<char*> boot_class_path_packages(10); | |
467 char package_name[256]; | |
468 bool skipCurrentJar = false; | |
469 while (fgets(package_name, sizeof(package_name), file) != NULL) { | |
470 ++line_no; | |
471 // Remove trailing newline | |
472 package_name[strlen(package_name) - 1] = '\0'; | |
473 switch(package_name[0]) { | |
474 case '%': | |
475 { | |
476 if ((line_no == 1) && (strcmp(package_name, known_version) != 0)) { | |
477 if (TraceClassLoading && Verbose) { | |
478 tty->print("[Unsupported meta index version]"); | |
479 } | |
480 fclose(file); | |
481 return; | |
482 } | |
483 } | |
484 | |
485 // These directives indicate jar files which contain only | |
486 // classes, only non-classfile resources, or a combination of | |
487 // the two. See src/share/classes/sun/misc/MetaIndex.java and | |
488 // make/tools/MetaIndex/BuildMetaIndex.java in the J2SE | |
489 // workspace. | |
490 case '#': | |
491 case '!': | |
492 case '@': | |
493 { | |
494 // Hand off current packages to current lazy entry (if any) | |
495 if ((cur_entry != NULL) && | |
496 (boot_class_path_packages.length() > 0)) { | |
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497 if ((TraceClassLoading || TraceClassPaths) && Verbose) { |
0 | 498 print_meta_index(cur_entry, boot_class_path_packages); |
499 } | |
500 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
501 boot_class_path_packages.length()); | |
502 cur_entry->set_meta_index(index); | |
503 } | |
504 cur_entry = NULL; | |
505 boot_class_path_packages.clear(); | |
506 | |
507 // Find lazy entry corresponding to this jar file | |
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508 int count = 0; |
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509 for (ClassPathEntry* entry = _first_entry; entry != NULL; entry = entry->next(), count++) { |
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510 if (count >= start_index && |
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511 entry->is_lazy() && |
0 | 512 string_starts_with(entry->name(), meta_index_dir) && |
513 string_ends_with(entry->name(), &package_name[2])) { | |
514 cur_entry = (LazyClassPathEntry*) entry; | |
515 break; | |
516 } | |
517 } | |
518 | |
519 // If the first character is '@', it indicates the following jar | |
520 // file is a resource only jar file in which case, we should skip | |
521 // reading the subsequent entries since the resource loading is | |
522 // totally handled by J2SE side. | |
523 if (package_name[0] == '@') { | |
524 if (cur_entry != NULL) { | |
525 cur_entry->set_meta_index(new MetaIndex(NULL, 0)); | |
526 } | |
527 cur_entry = NULL; | |
528 skipCurrentJar = true; | |
529 } else { | |
530 skipCurrentJar = false; | |
531 } | |
532 | |
533 break; | |
534 } | |
535 | |
536 default: | |
537 { | |
538 if (!skipCurrentJar && cur_entry != NULL) { | |
539 char* new_name = strdup(package_name); | |
540 boot_class_path_packages.append(new_name); | |
541 } | |
542 } | |
543 } | |
544 } | |
545 // Hand off current packages to current lazy entry (if any) | |
546 if ((cur_entry != NULL) && | |
547 (boot_class_path_packages.length() > 0)) { | |
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548 if ((TraceClassLoading || TraceClassPaths) && Verbose) { |
0 | 549 print_meta_index(cur_entry, boot_class_path_packages); |
550 } | |
551 MetaIndex* index = new MetaIndex(boot_class_path_packages.adr_at(0), | |
552 boot_class_path_packages.length()); | |
553 cur_entry->set_meta_index(index); | |
554 } | |
555 fclose(file); | |
556 } | |
557 } | |
558 | |
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559 #if INCLUDE_CDS |
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560 void ClassLoader::check_shared_classpath(const char *path) { |
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561 if (strcmp(path, "") == 0) { |
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562 exit_with_path_failure("Cannot have empty path in archived classpaths", NULL); |
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563 } |
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564 |
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565 struct stat st; |
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566 if (os::stat(path, &st) == 0) { |
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567 if ((st.st_mode & S_IFREG) != S_IFREG) { // is directory |
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568 if (!os::dir_is_empty(path)) { |
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569 tty->print_cr("Error: non-empty directory '%s'", path); |
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570 exit_with_path_failure("CDS allows only empty directories in archived classpaths", NULL); |
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571 } |
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572 } |
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573 } |
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574 } |
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575 #endif |
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576 |
0 | 577 void ClassLoader::setup_bootstrap_search_path() { |
578 assert(_first_entry == NULL, "should not setup bootstrap class search path twice"); | |
20376 | 579 const char* sys_class_path = Arguments::get_sysclasspath(); |
580 if (PrintSharedArchiveAndExit) { | |
581 // Don't print sys_class_path - this is the bootcp of this current VM process, not necessarily | |
582 // the same as the bootcp of the shared archive. | |
583 } else { | |
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584 trace_class_path("[Bootstrap loader class path=", sys_class_path); |
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585 } |
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586 #if INCLUDE_CDS |
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587 if (DumpSharedSpaces) { |
20376 | 588 _shared_paths_misc_info->add_boot_classpath(sys_class_path); |
0 | 589 } |
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590 #endif |
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591 setup_search_path(sys_class_path); |
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592 } |
0 | 593 |
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594 #if INCLUDE_CDS |
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595 int ClassLoader::get_shared_paths_misc_info_size() { |
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596 return _shared_paths_misc_info->get_used_bytes(); |
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597 } |
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598 |
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599 void* ClassLoader::get_shared_paths_misc_info() { |
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600 return _shared_paths_misc_info->buffer(); |
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601 } |
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602 |
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603 bool ClassLoader::check_shared_paths_misc_info(void *buf, int size) { |
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604 SharedPathsMiscInfo* checker = SharedClassUtil::allocate_shared_paths_misc_info((char*)buf, size); |
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605 bool result = checker->check(); |
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606 delete checker; |
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607 return result; |
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608 } |
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609 #endif |
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610 |
20376 | 611 void ClassLoader::setup_search_path(const char *class_path) { |
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612 int offset = 0; |
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613 int len = (int)strlen(class_path); |
0 | 614 int end = 0; |
615 | |
616 // Iterate over class path entries | |
617 for (int start = 0; start < len; start = end) { | |
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618 while (class_path[end] && class_path[end] != os::path_separator()[0]) { |
0 | 619 end++; |
620 } | |
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621 EXCEPTION_MARK; |
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622 ResourceMark rm(THREAD); |
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623 char* path = NEW_RESOURCE_ARRAY(char, end - start + 1); |
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624 strncpy(path, &class_path[start], end - start); |
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625 path[end - start] = '\0'; |
0 | 626 update_class_path_entry_list(path, false); |
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627 #if INCLUDE_CDS |
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628 if (DumpSharedSpaces) { |
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629 check_shared_classpath(path); |
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630 } |
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631 #endif |
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632 while (class_path[end] == os::path_separator()[0]) { |
0 | 633 end++; |
634 } | |
635 } | |
636 } | |
637 | |
20376 | 638 ClassPathEntry* ClassLoader::create_class_path_entry(const char *path, const struct stat* st, |
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639 bool lazy, bool throw_exception, TRAPS) { |
0 | 640 JavaThread* thread = JavaThread::current(); |
641 if (lazy) { | |
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642 return new LazyClassPathEntry(path, st, throw_exception); |
0 | 643 } |
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644 ClassPathEntry* new_entry = NULL; |
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645 if ((st->st_mode & S_IFREG) == S_IFREG) { |
0 | 646 // Regular file, should be a zip file |
647 // Canonicalized filename | |
648 char canonical_path[JVM_MAXPATHLEN]; | |
649 if (!get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) { | |
650 // This matches the classic VM | |
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651 if (throw_exception) { |
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652 THROW_MSG_(vmSymbols::java_io_IOException(), "Bad pathname", NULL); |
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653 } else { |
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654 return NULL; |
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655 } |
0 | 656 } |
657 char* error_msg = NULL; | |
658 jzfile* zip; | |
659 { | |
660 // enable call to C land | |
661 ThreadToNativeFromVM ttn(thread); | |
662 HandleMark hm(thread); | |
663 zip = (*ZipOpen)(canonical_path, &error_msg); | |
664 } | |
665 if (zip != NULL && error_msg == NULL) { | |
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666 new_entry = new ClassPathZipEntry(zip, path); |
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667 if (TraceClassLoading || TraceClassPaths) { |
0 | 668 tty->print_cr("[Opened %s]", path); |
669 } | |
670 } else { | |
671 ResourceMark rm(thread); | |
672 char *msg; | |
673 if (error_msg == NULL) { | |
674 msg = NEW_RESOURCE_ARRAY(char, strlen(path) + 128); ; | |
675 jio_snprintf(msg, strlen(path) + 127, "error in opening JAR file %s", path); | |
676 } else { | |
677 int len = (int)(strlen(path) + strlen(error_msg) + 128); | |
678 msg = NEW_RESOURCE_ARRAY(char, len); ; | |
679 jio_snprintf(msg, len - 1, "error in opening JAR file <%s> %s", error_msg, path); | |
680 } | |
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681 if (throw_exception) { |
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682 THROW_MSG_(vmSymbols::java_lang_ClassNotFoundException(), msg, NULL); |
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683 } else { |
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684 return NULL; |
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685 } |
0 | 686 } |
687 } else { | |
688 // Directory | |
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689 new_entry = new ClassPathDirEntry(path); |
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690 if (TraceClassLoading || TraceClassPaths) { |
0 | 691 tty->print_cr("[Path %s]", path); |
692 } | |
693 } | |
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694 return new_entry; |
0 | 695 } |
696 | |
697 | |
698 // Create a class path zip entry for a given path (return NULL if not found | |
699 // or zip/JAR file cannot be opened) | |
700 ClassPathZipEntry* ClassLoader::create_class_path_zip_entry(const char *path) { | |
701 // check for a regular file | |
702 struct stat st; | |
703 if (os::stat(path, &st) == 0) { | |
704 if ((st.st_mode & S_IFREG) == S_IFREG) { | |
705 char canonical_path[JVM_MAXPATHLEN]; | |
20376 | 706 if (get_canonical_path(path, canonical_path, JVM_MAXPATHLEN)) { |
0 | 707 char* error_msg = NULL; |
708 jzfile* zip; | |
709 { | |
710 // enable call to C land | |
711 JavaThread* thread = JavaThread::current(); | |
712 ThreadToNativeFromVM ttn(thread); | |
713 HandleMark hm(thread); | |
714 zip = (*ZipOpen)(canonical_path, &error_msg); | |
715 } | |
716 if (zip != NULL && error_msg == NULL) { | |
717 // create using canonical path | |
718 return new ClassPathZipEntry(zip, canonical_path); | |
719 } | |
720 } | |
721 } | |
722 } | |
723 return NULL; | |
724 } | |
725 | |
726 // returns true if entry already on class path | |
727 bool ClassLoader::contains_entry(ClassPathEntry *entry) { | |
728 ClassPathEntry* e = _first_entry; | |
729 while (e != NULL) { | |
730 // assume zip entries have been canonicalized | |
731 if (strcmp(entry->name(), e->name()) == 0) { | |
732 return true; | |
733 } | |
734 e = e->next(); | |
735 } | |
736 return false; | |
737 } | |
738 | |
739 void ClassLoader::add_to_list(ClassPathEntry *new_entry) { | |
740 if (new_entry != NULL) { | |
741 if (_last_entry == NULL) { | |
742 _first_entry = _last_entry = new_entry; | |
743 } else { | |
744 _last_entry->set_next(new_entry); | |
745 _last_entry = new_entry; | |
746 } | |
747 } | |
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748 _num_entries ++; |
0 | 749 } |
750 | |
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751 // Returns true IFF the file/dir exists and the entry was successfully created. |
20376 | 752 bool ClassLoader::update_class_path_entry_list(const char *path, |
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753 bool check_for_duplicates, |
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754 bool throw_exception) { |
0 | 755 struct stat st; |
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756 if (os::stat(path, &st) == 0) { |
0 | 757 // File or directory found |
758 ClassPathEntry* new_entry = NULL; | |
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759 Thread* THREAD = Thread::current(); |
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760 new_entry = create_class_path_entry(path, &st, LazyBootClassLoader, throw_exception, CHECK_(false)); |
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761 if (new_entry == NULL) { |
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762 return false; |
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763 } |
0 | 764 // The kernel VM adds dynamically to the end of the classloader path and |
765 // doesn't reorder the bootclasspath which would break java.lang.Package | |
766 // (see PackageInfo). | |
767 // Add new entry to linked list | |
768 if (!check_for_duplicates || !contains_entry(new_entry)) { | |
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769 ClassLoaderExt::add_class_path_entry(path, check_for_duplicates, new_entry); |
0 | 770 } |
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771 return true; |
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772 } else { |
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773 #if INCLUDE_CDS |
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774 if (DumpSharedSpaces) { |
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775 _shared_paths_misc_info->add_nonexist_path(path); |
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776 } |
20376 | 777 #endif |
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778 return false; |
0 | 779 } |
780 } | |
781 | |
782 void ClassLoader::print_bootclasspath() { | |
783 ClassPathEntry* e = _first_entry; | |
784 tty->print("[bootclasspath= "); | |
785 while (e != NULL) { | |
786 tty->print("%s ;", e->name()); | |
787 e = e->next(); | |
788 } | |
789 tty->print_cr("]"); | |
790 } | |
791 | |
792 void ClassLoader::load_zip_library() { | |
793 assert(ZipOpen == NULL, "should not load zip library twice"); | |
794 // First make sure native library is loaded | |
795 os::native_java_library(); | |
796 // Load zip library | |
797 char path[JVM_MAXPATHLEN]; | |
798 char ebuf[1024]; | |
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799 void* handle = NULL; |
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800 if (os::dll_build_name(path, sizeof(path), Arguments::get_dll_dir(), "zip")) { |
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801 handle = os::dll_load(path, ebuf, sizeof ebuf); |
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802 } |
0 | 803 if (handle == NULL) { |
804 vm_exit_during_initialization("Unable to load ZIP library", path); | |
805 } | |
806 // Lookup zip entry points | |
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807 ZipOpen = CAST_TO_FN_PTR(ZipOpen_t, os::dll_lookup(handle, "ZIP_Open")); |
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808 ZipClose = CAST_TO_FN_PTR(ZipClose_t, os::dll_lookup(handle, "ZIP_Close")); |
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809 FindEntry = CAST_TO_FN_PTR(FindEntry_t, os::dll_lookup(handle, "ZIP_FindEntry")); |
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810 ReadEntry = CAST_TO_FN_PTR(ReadEntry_t, os::dll_lookup(handle, "ZIP_ReadEntry")); |
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811 ReadMappedEntry = CAST_TO_FN_PTR(ReadMappedEntry_t, os::dll_lookup(handle, "ZIP_ReadMappedEntry")); |
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812 GetNextEntry = CAST_TO_FN_PTR(GetNextEntry_t, os::dll_lookup(handle, "ZIP_GetNextEntry")); |
0 | 813 |
814 // ZIP_Close is not exported on Windows in JDK5.0 so don't abort if ZIP_Close is NULL | |
815 if (ZipOpen == NULL || FindEntry == NULL || ReadEntry == NULL || GetNextEntry == NULL) { | |
816 vm_exit_during_initialization("Corrupted ZIP library", path); | |
817 } | |
818 | |
819 // Lookup canonicalize entry in libjava.dll | |
820 void *javalib_handle = os::native_java_library(); | |
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821 CanonicalizeEntry = CAST_TO_FN_PTR(canonicalize_fn_t, os::dll_lookup(javalib_handle, "Canonicalize")); |
0 | 822 // This lookup only works on 1.3. Do not check for non-null here |
823 } | |
824 | |
825 // PackageInfo data exists in order to support the java.lang.Package | |
826 // class. A Package object provides information about a java package | |
827 // (version, vendor, etc.) which originates in the manifest of the jar | |
828 // file supplying the package. For application classes, the ClassLoader | |
829 // object takes care of this. | |
830 | |
831 // For system (boot) classes, the Java code in the Package class needs | |
832 // to be able to identify which source jar file contained the boot | |
833 // class, so that it can extract the manifest from it. This table | |
834 // identifies java packages with jar files in the boot classpath. | |
835 | |
836 // Because the boot classpath cannot change, the classpath index is | |
837 // sufficient to identify the source jar file or directory. (Since | |
838 // directories have no manifests, the directory name is not required, | |
839 // but is available.) | |
840 | |
841 // When using sharing -- the pathnames of entries in the boot classpath | |
842 // may not be the same at runtime as they were when the archive was | |
843 // created (NFS, Samba, etc.). The actual files and directories named | |
844 // in the classpath must be the same files, in the same order, even | |
845 // though the exact name is not the same. | |
846 | |
6197 | 847 class PackageInfo: public BasicHashtableEntry<mtClass> { |
0 | 848 public: |
849 const char* _pkgname; // Package name | |
850 int _classpath_index; // Index of directory or JAR file loaded from | |
851 | |
852 PackageInfo* next() { | |
6197 | 853 return (PackageInfo*)BasicHashtableEntry<mtClass>::next(); |
0 | 854 } |
855 | |
856 const char* pkgname() { return _pkgname; } | |
857 void set_pkgname(char* pkgname) { _pkgname = pkgname; } | |
858 | |
859 const char* filename() { | |
860 return ClassLoader::classpath_entry(_classpath_index)->name(); | |
861 } | |
862 | |
863 void set_index(int index) { | |
864 _classpath_index = index; | |
865 } | |
866 }; | |
867 | |
868 | |
6197 | 869 class PackageHashtable : public BasicHashtable<mtClass> { |
0 | 870 private: |
871 inline unsigned int compute_hash(const char *s, int n) { | |
872 unsigned int val = 0; | |
873 while (--n >= 0) { | |
874 val = *s++ + 31 * val; | |
875 } | |
876 return val; | |
877 } | |
878 | |
879 PackageInfo* bucket(int index) { | |
6197 | 880 return (PackageInfo*)BasicHashtable<mtClass>::bucket(index); |
0 | 881 } |
882 | |
883 PackageInfo* get_entry(int index, unsigned int hash, | |
884 const char* pkgname, size_t n) { | |
885 for (PackageInfo* pp = bucket(index); pp != NULL; pp = pp->next()) { | |
886 if (pp->hash() == hash && | |
887 strncmp(pkgname, pp->pkgname(), n) == 0 && | |
888 pp->pkgname()[n] == '\0') { | |
889 return pp; | |
890 } | |
891 } | |
892 return NULL; | |
893 } | |
894 | |
895 public: | |
896 PackageHashtable(int table_size) | |
6197 | 897 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo)) {} |
0 | 898 |
6197 | 899 PackageHashtable(int table_size, HashtableBucket<mtClass>* t, int number_of_entries) |
900 : BasicHashtable<mtClass>(table_size, sizeof(PackageInfo), t, number_of_entries) {} | |
0 | 901 |
902 PackageInfo* get_entry(const char* pkgname, int n) { | |
903 unsigned int hash = compute_hash(pkgname, n); | |
904 return get_entry(hash_to_index(hash), hash, pkgname, n); | |
905 } | |
906 | |
907 PackageInfo* new_entry(char* pkgname, int n) { | |
908 unsigned int hash = compute_hash(pkgname, n); | |
909 PackageInfo* pp; | |
6197 | 910 pp = (PackageInfo*)BasicHashtable<mtClass>::new_entry(hash); |
0 | 911 pp->set_pkgname(pkgname); |
912 return pp; | |
913 } | |
914 | |
915 void add_entry(PackageInfo* pp) { | |
916 int index = hash_to_index(pp->hash()); | |
6197 | 917 BasicHashtable<mtClass>::add_entry(index, pp); |
0 | 918 } |
919 | |
920 void copy_pkgnames(const char** packages) { | |
921 int n = 0; | |
922 for (int i = 0; i < table_size(); ++i) { | |
923 for (PackageInfo* pp = bucket(i); pp != NULL; pp = pp->next()) { | |
924 packages[n++] = pp->pkgname(); | |
925 } | |
926 } | |
927 assert(n == number_of_entries(), "just checking"); | |
928 } | |
929 | |
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930 CDS_ONLY(void copy_table(char** top, char* end, PackageHashtable* table);) |
0 | 931 }; |
932 | |
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933 #if INCLUDE_CDS |
0 | 934 void PackageHashtable::copy_table(char** top, char* end, |
935 PackageHashtable* table) { | |
936 // Copy (relocate) the table to the shared space. | |
6197 | 937 BasicHashtable<mtClass>::copy_table(top, end); |
0 | 938 |
939 // Calculate the space needed for the package name strings. | |
940 int i; | |
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941 intptr_t* tableSize = (intptr_t*)(*top); |
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942 *top += sizeof(intptr_t); // For table size |
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943 char* tableStart = *top; |
0 | 944 |
945 for (i = 0; i < table_size(); ++i) { | |
946 for (PackageInfo* pp = table->bucket(i); | |
947 pp != NULL; | |
948 pp = pp->next()) { | |
949 int n1 = (int)(strlen(pp->pkgname()) + 1); | |
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950 if (*top + n1 >= end) { |
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951 report_out_of_shared_space(SharedMiscData); |
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952 } |
0 | 953 pp->set_pkgname((char*)memcpy(*top, pp->pkgname(), n1)); |
954 *top += n1; | |
955 } | |
956 } | |
957 *top = (char*)align_size_up((intptr_t)*top, sizeof(HeapWord)); | |
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958 if (*top >= end) { |
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959 report_out_of_shared_space(SharedMiscData); |
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960 } |
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961 |
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962 // Write table size |
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963 intptr_t len = *top - (char*)tableStart; |
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964 *tableSize = len; |
0 | 965 } |
966 | |
967 | |
968 void ClassLoader::copy_package_info_buckets(char** top, char* end) { | |
969 _package_hash_table->copy_buckets(top, end); | |
970 } | |
971 | |
972 void ClassLoader::copy_package_info_table(char** top, char* end) { | |
973 _package_hash_table->copy_table(top, end, _package_hash_table); | |
974 } | |
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975 #endif |
0 | 976 |
977 PackageInfo* ClassLoader::lookup_package(const char *pkgname) { | |
978 const char *cp = strrchr(pkgname, '/'); | |
979 if (cp != NULL) { | |
980 // Package prefix found | |
981 int n = cp - pkgname + 1; | |
982 return _package_hash_table->get_entry(pkgname, n); | |
983 } | |
984 return NULL; | |
985 } | |
986 | |
987 | |
988 bool ClassLoader::add_package(const char *pkgname, int classpath_index, TRAPS) { | |
989 assert(pkgname != NULL, "just checking"); | |
990 // Bootstrap loader no longer holds system loader lock obj serializing | |
991 // load_instance_class and thereby add_package | |
992 { | |
993 MutexLocker ml(PackageTable_lock, THREAD); | |
994 // First check for previously loaded entry | |
995 PackageInfo* pp = lookup_package(pkgname); | |
996 if (pp != NULL) { | |
997 // Existing entry found, check source of package | |
998 pp->set_index(classpath_index); | |
999 return true; | |
1000 } | |
1001 | |
1002 const char *cp = strrchr(pkgname, '/'); | |
1003 if (cp != NULL) { | |
1004 // Package prefix found | |
1005 int n = cp - pkgname + 1; | |
1006 | |
6197 | 1007 char* new_pkgname = NEW_C_HEAP_ARRAY(char, n + 1, mtClass); |
0 | 1008 if (new_pkgname == NULL) { |
1009 return false; | |
1010 } | |
1011 | |
1012 memcpy(new_pkgname, pkgname, n); | |
1013 new_pkgname[n] = '\0'; | |
1014 pp = _package_hash_table->new_entry(new_pkgname, n); | |
1015 pp->set_index(classpath_index); | |
1016 | |
1017 // Insert into hash table | |
1018 _package_hash_table->add_entry(pp); | |
1019 } | |
1020 return true; | |
1021 } | |
1022 } | |
1023 | |
1024 | |
1025 oop ClassLoader::get_system_package(const char* name, TRAPS) { | |
1026 PackageInfo* pp; | |
1027 { | |
1028 MutexLocker ml(PackageTable_lock, THREAD); | |
1029 pp = lookup_package(name); | |
1030 } | |
1031 if (pp == NULL) { | |
1032 return NULL; | |
1033 } else { | |
1034 Handle p = java_lang_String::create_from_str(pp->filename(), THREAD); | |
1035 return p(); | |
1036 } | |
1037 } | |
1038 | |
1039 | |
1040 objArrayOop ClassLoader::get_system_packages(TRAPS) { | |
1041 ResourceMark rm(THREAD); | |
1042 int nof_entries; | |
1043 const char** packages; | |
1044 { | |
1045 MutexLocker ml(PackageTable_lock, THREAD); | |
1046 // Allocate resource char* array containing package names | |
1047 nof_entries = _package_hash_table->number_of_entries(); | |
1048 if ((packages = NEW_RESOURCE_ARRAY(const char*, nof_entries)) == NULL) { | |
1049 return NULL; | |
1050 } | |
1051 _package_hash_table->copy_pkgnames(packages); | |
1052 } | |
1053 // Allocate objArray and fill with java.lang.String | |
1142 | 1054 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 1055 nof_entries, CHECK_0); |
1056 objArrayHandle result(THREAD, r); | |
1057 for (int i = 0; i < nof_entries; i++) { | |
1058 Handle str = java_lang_String::create_from_str(packages[i], CHECK_0); | |
1059 result->obj_at_put(i, str()); | |
1060 } | |
1061 | |
1062 return result(); | |
1063 } | |
1064 | |
1065 | |
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1066 instanceKlassHandle ClassLoader::load_classfile(Symbol* h_name, TRAPS) { |
0 | 1067 ResourceMark rm(THREAD); |
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1068 const char* class_name = h_name->as_C_string(); |
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1069 EventMark m("loading class %s", class_name); |
0 | 1070 ThreadProfilerMark tpm(ThreadProfilerMark::classLoaderRegion); |
1071 | |
1072 stringStream st; | |
1073 // st.print() uses too much stack space while handling a StackOverflowError | |
1074 // st.print("%s.class", h_name->as_utf8()); | |
1075 st.print_raw(h_name->as_utf8()); | |
1076 st.print_raw(".class"); | |
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1077 const char* file_name = st.as_string(); |
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1078 ClassLoaderExt::Context context(class_name, file_name, THREAD); |
0 | 1079 |
1080 // Lookup stream for parsing .class file | |
1081 ClassFileStream* stream = NULL; | |
1082 int classpath_index = 0; | |
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1083 ClassPathEntry* e = NULL; |
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1084 instanceKlassHandle h; |
0 | 1085 { |
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1086 PerfClassTraceTime vmtimer(perf_sys_class_lookup_time(), |
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1087 ((JavaThread*) THREAD)->get_thread_stat()->perf_timers_addr(), |
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1088 PerfClassTraceTime::CLASS_LOAD); |
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1089 e = _first_entry; |
0 | 1090 while (e != NULL) { |
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1091 stream = e->open_stream(file_name, CHECK_NULL); |
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1092 if (!context.check(stream, classpath_index)) { |
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1093 return h; // NULL |
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1094 } |
0 | 1095 if (stream != NULL) { |
1096 break; | |
1097 } | |
1098 e = e->next(); | |
1099 ++classpath_index; | |
1100 } | |
1101 } | |
1102 | |
1103 if (stream != NULL) { | |
1104 // class file found, parse it | |
1105 ClassFileParser parser(stream); | |
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1106 ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data(); |
0 | 1107 Handle protection_domain; |
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1108 TempNewSymbol parsed_name = NULL; |
0 | 1109 instanceKlassHandle result = parser.parseClassFile(h_name, |
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1110 loader_data, |
0 | 1111 protection_domain, |
1112 parsed_name, | |
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1113 context.should_verify(classpath_index), |
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1114 THREAD); |
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1115 if (HAS_PENDING_EXCEPTION) { |
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1116 ResourceMark rm; |
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1117 if (DumpSharedSpaces) { |
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1118 tty->print_cr("Preload Error: Failed to load %s", class_name); |
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1119 } |
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1120 return h; |
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1121 } |
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1122 h = context.record_result(classpath_index, e, result, THREAD); |
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1123 } else { |
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1124 if (DumpSharedSpaces) { |
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1125 tty->print_cr("Preload Error: Cannot find %s", class_name); |
0 | 1126 } |
1127 } | |
1128 | |
1129 return h; | |
1130 } | |
1131 | |
1132 | |
6197 | 1133 void ClassLoader::create_package_info_table(HashtableBucket<mtClass> *t, int length, |
0 | 1134 int number_of_entries) { |
1135 assert(_package_hash_table == NULL, "One package info table allowed."); | |
6197 | 1136 assert(length == package_hash_table_size * sizeof(HashtableBucket<mtClass>), |
0 | 1137 "bad shared package info size."); |
1138 _package_hash_table = new PackageHashtable(package_hash_table_size, t, | |
1139 number_of_entries); | |
1140 } | |
1141 | |
1142 | |
1143 void ClassLoader::create_package_info_table() { | |
1144 assert(_package_hash_table == NULL, "shouldn't have one yet"); | |
1145 _package_hash_table = new PackageHashtable(package_hash_table_size); | |
1146 } | |
1147 | |
1148 | |
1149 // Initialize the class loader's access to methods in libzip. Parse and | |
1150 // process the boot classpath into a list ClassPathEntry objects. Once | |
1151 // this list has been created, it must not change order (see class PackageInfo) | |
1152 // it can be appended to and is by jvmti and the kernel vm. | |
1153 | |
1154 void ClassLoader::initialize() { | |
1155 assert(_package_hash_table == NULL, "should have been initialized by now."); | |
1156 EXCEPTION_MARK; | |
1157 | |
1158 if (UsePerfData) { | |
1159 // jvmstat performance counters | |
1160 NEWPERFTICKCOUNTER(_perf_accumulated_time, SUN_CLS, "time"); | |
1161 NEWPERFTICKCOUNTER(_perf_class_init_time, SUN_CLS, "classInitTime"); | |
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1162 NEWPERFTICKCOUNTER(_perf_class_init_selftime, SUN_CLS, "classInitTime.self"); |
0 | 1163 NEWPERFTICKCOUNTER(_perf_class_verify_time, SUN_CLS, "classVerifyTime"); |
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1164 NEWPERFTICKCOUNTER(_perf_class_verify_selftime, SUN_CLS, "classVerifyTime.self"); |
0 | 1165 NEWPERFTICKCOUNTER(_perf_class_link_time, SUN_CLS, "classLinkedTime"); |
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1166 NEWPERFTICKCOUNTER(_perf_class_link_selftime, SUN_CLS, "classLinkedTime.self"); |
0 | 1167 NEWPERFEVENTCOUNTER(_perf_classes_inited, SUN_CLS, "initializedClasses"); |
1168 NEWPERFEVENTCOUNTER(_perf_classes_linked, SUN_CLS, "linkedClasses"); | |
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1169 NEWPERFEVENTCOUNTER(_perf_classes_verified, SUN_CLS, "verifiedClasses"); |
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1170 |
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1171 NEWPERFTICKCOUNTER(_perf_class_parse_time, SUN_CLS, "parseClassTime"); |
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1172 NEWPERFTICKCOUNTER(_perf_class_parse_selftime, SUN_CLS, "parseClassTime.self"); |
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1173 NEWPERFTICKCOUNTER(_perf_sys_class_lookup_time, SUN_CLS, "lookupSysClassTime"); |
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1174 NEWPERFTICKCOUNTER(_perf_shared_classload_time, SUN_CLS, "sharedClassLoadTime"); |
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1175 NEWPERFTICKCOUNTER(_perf_sys_classload_time, SUN_CLS, "sysClassLoadTime"); |
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1176 NEWPERFTICKCOUNTER(_perf_app_classload_time, SUN_CLS, "appClassLoadTime"); |
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1177 NEWPERFTICKCOUNTER(_perf_app_classload_selftime, SUN_CLS, "appClassLoadTime.self"); |
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1178 NEWPERFEVENTCOUNTER(_perf_app_classload_count, SUN_CLS, "appClassLoadCount"); |
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1179 NEWPERFTICKCOUNTER(_perf_define_appclasses, SUN_CLS, "defineAppClasses"); |
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1180 NEWPERFTICKCOUNTER(_perf_define_appclass_time, SUN_CLS, "defineAppClassTime"); |
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1181 NEWPERFTICKCOUNTER(_perf_define_appclass_selftime, SUN_CLS, "defineAppClassTime.self"); |
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1182 NEWPERFBYTECOUNTER(_perf_app_classfile_bytes_read, SUN_CLS, "appClassBytes"); |
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1183 NEWPERFBYTECOUNTER(_perf_sys_classfile_bytes_read, SUN_CLS, "sysClassBytes"); |
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1184 |
0 | 1185 |
1186 // The following performance counters are added for measuring the impact | |
1187 // of the bug fix of 6365597. They are mainly focused on finding out | |
1188 // the behavior of system & user-defined classloader lock, whether | |
1189 // ClassLoader.loadClass/findClass is being called synchronized or not. | |
1190 // Also two additional counters are created to see whether 'UnsyncloadClass' | |
1191 // flag is being set or not and how many times load_instance_class call | |
1192 // fails with linkageError etc. | |
1193 NEWPERFEVENTCOUNTER(_sync_systemLoaderLockContentionRate, SUN_CLS, | |
1194 "systemLoaderLockContentionRate"); | |
1195 NEWPERFEVENTCOUNTER(_sync_nonSystemLoaderLockContentionRate, SUN_CLS, | |
1196 "nonSystemLoaderLockContentionRate"); | |
1197 NEWPERFEVENTCOUNTER(_sync_JVMFindLoadedClassLockFreeCounter, SUN_CLS, | |
1198 "jvmFindLoadedClassNoLockCalls"); | |
1199 NEWPERFEVENTCOUNTER(_sync_JVMDefineClassLockFreeCounter, SUN_CLS, | |
1200 "jvmDefineClassNoLockCalls"); | |
1201 | |
1202 NEWPERFEVENTCOUNTER(_sync_JNIDefineClassLockFreeCounter, SUN_CLS, | |
1203 "jniDefineClassNoLockCalls"); | |
1204 | |
1205 NEWPERFEVENTCOUNTER(_unsafe_defineClassCallCounter, SUN_CLS, | |
1206 "unsafeDefineClassCalls"); | |
1207 | |
1208 NEWPERFEVENTCOUNTER(_isUnsyncloadClass, SUN_CLS, "isUnsyncloadClassSet"); | |
1209 NEWPERFEVENTCOUNTER(_load_instance_class_failCounter, SUN_CLS, | |
1210 "loadInstanceClassFailRate"); | |
1211 | |
1212 // increment the isUnsyncloadClass counter if UnsyncloadClass is set. | |
1213 if (UnsyncloadClass) { | |
1214 _isUnsyncloadClass->inc(); | |
1215 } | |
1216 } | |
1217 | |
1218 // lookup zip library entry points | |
1219 load_zip_library(); | |
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1220 #if INCLUDE_CDS |
0 | 1221 // initialize search path |
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1222 if (DumpSharedSpaces) { |
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1223 _shared_paths_misc_info = SharedClassUtil::allocate_shared_paths_misc_info(); |
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1224 } |
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1225 #endif |
0 | 1226 setup_bootstrap_search_path(); |
1227 if (LazyBootClassLoader) { | |
1228 // set up meta index which makes boot classpath initialization lazier | |
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1229 setup_bootstrap_meta_index(); |
0 | 1230 } |
1231 } | |
1232 | |
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1233 #if INCLUDE_CDS |
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1234 void ClassLoader::initialize_shared_path() { |
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1235 if (DumpSharedSpaces) { |
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1236 ClassLoaderExt::setup_search_paths(); |
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1237 _shared_paths_misc_info->write_jint(0); // see comments in SharedPathsMiscInfo::check() |
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1238 } |
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1239 } |
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1240 #endif |
0 | 1241 |
1242 jlong ClassLoader::classloader_time_ms() { | |
1243 return UsePerfData ? | |
1244 Management::ticks_to_ms(_perf_accumulated_time->get_value()) : -1; | |
1245 } | |
1246 | |
1247 jlong ClassLoader::class_init_count() { | |
1248 return UsePerfData ? _perf_classes_inited->get_value() : -1; | |
1249 } | |
1250 | |
1251 jlong ClassLoader::class_init_time_ms() { | |
1252 return UsePerfData ? | |
1253 Management::ticks_to_ms(_perf_class_init_time->get_value()) : -1; | |
1254 } | |
1255 | |
1256 jlong ClassLoader::class_verify_time_ms() { | |
1257 return UsePerfData ? | |
1258 Management::ticks_to_ms(_perf_class_verify_time->get_value()) : -1; | |
1259 } | |
1260 | |
1261 jlong ClassLoader::class_link_count() { | |
1262 return UsePerfData ? _perf_classes_linked->get_value() : -1; | |
1263 } | |
1264 | |
1265 jlong ClassLoader::class_link_time_ms() { | |
1266 return UsePerfData ? | |
1267 Management::ticks_to_ms(_perf_class_link_time->get_value()) : -1; | |
1268 } | |
1269 | |
1270 int ClassLoader::compute_Object_vtable() { | |
1271 // hardwired for JDK1.2 -- would need to duplicate class file parsing | |
1272 // code to determine actual value from file | |
1273 // Would be value '11' if finals were in vtable | |
1274 int JDK_1_2_Object_vtable_size = 5; | |
1275 return JDK_1_2_Object_vtable_size * vtableEntry::size(); | |
1276 } | |
1277 | |
1278 | |
1279 void classLoader_init() { | |
1280 ClassLoader::initialize(); | |
1281 } | |
1282 | |
1283 | |
20376 | 1284 bool ClassLoader::get_canonical_path(const char* orig, char* out, int len) { |
0 | 1285 assert(orig != NULL && out != NULL && len > 0, "bad arguments"); |
1286 if (CanonicalizeEntry != NULL) { | |
20376 | 1287 JavaThread* THREAD = JavaThread::current(); |
1288 JNIEnv* env = THREAD->jni_environment(); | |
1289 ResourceMark rm(THREAD); | |
1290 | |
1291 // os::native_path writes into orig_copy | |
1292 char* orig_copy = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, strlen(orig)+1); | |
1293 strcpy(orig_copy, orig); | |
1294 if ((CanonicalizeEntry)(env, os::native_path(orig_copy), out, len) < 0) { | |
0 | 1295 return false; |
1296 } | |
1297 } else { | |
1298 // On JDK 1.2.2 the Canonicalize does not exist, so just do nothing | |
1299 strncpy(out, orig, len); | |
1300 out[len - 1] = '\0'; | |
1301 } | |
1302 return true; | |
1303 } | |
1304 | |
1305 #ifndef PRODUCT | |
1306 | |
1307 void ClassLoader::verify() { | |
1308 _package_hash_table->verify(); | |
1309 } | |
1310 | |
1311 | |
1312 // CompileTheWorld | |
1313 // | |
1314 // Iterates over all class path entries and forces compilation of all methods | |
1315 // in all classes found. Currently, only zip/jar archives are searched. | |
1316 // | |
1317 // The classes are loaded by the Java level bootstrap class loader, and the | |
1318 // initializer is called. If DelayCompilationDuringStartup is true (default), | |
1319 // the interpreter will run the initialization code. Note that forcing | |
1320 // initialization in this way could potentially lead to initialization order | |
1321 // problems, in which case we could just force the initialization bit to be set. | |
1322 | |
1323 | |
1324 // We need to iterate over the contents of a zip/jar file, so we replicate the | |
1325 // jzcell and jzfile definitions from zip_util.h but rename jzfile to real_jzfile, | |
1326 // since jzfile already has a void* definition. | |
1327 // | |
1328 // Note that this is only used in debug mode. | |
1329 // | |
1330 // HotSpot integration note: | |
1331 // Matches zip_util.h 1.14 99/06/01 from jdk1.3 beta H build | |
1332 | |
1333 | |
1334 // JDK 1.3 version | |
1335 typedef struct real_jzentry13 { /* Zip file entry */ | |
1336 char *name; /* entry name */ | |
1337 jint time; /* modification time */ | |
1338 jint size; /* size of uncompressed data */ | |
1339 jint csize; /* size of compressed data (zero if uncompressed) */ | |
1340 jint crc; /* crc of uncompressed data */ | |
1341 char *comment; /* optional zip file comment */ | |
1342 jbyte *extra; /* optional extra data */ | |
1343 jint pos; /* position of LOC header (if negative) or data */ | |
1344 } real_jzentry13; | |
1345 | |
1346 typedef struct real_jzfile13 { /* Zip file */ | |
1347 char *name; /* zip file name */ | |
1348 jint refs; /* number of active references */ | |
1349 jint fd; /* open file descriptor */ | |
1350 void *lock; /* read lock */ | |
1351 char *comment; /* zip file comment */ | |
1352 char *msg; /* zip error message */ | |
1353 void *entries; /* array of hash cells */ | |
1354 jint total; /* total number of entries */ | |
1355 unsigned short *table; /* Hash chain heads: indexes into entries */ | |
1356 jint tablelen; /* number of hash eads */ | |
1357 real_jzfile13 *next; /* next zip file in search list */ | |
1358 jzentry *cache; /* we cache the most recently freed jzentry */ | |
1359 /* Information on metadata names in META-INF directory */ | |
1360 char **metanames; /* array of meta names (may have null names) */ | |
1361 jint metacount; /* number of slots in metanames array */ | |
1362 /* If there are any per-entry comments, they are in the comments array */ | |
1363 char **comments; | |
1364 } real_jzfile13; | |
1365 | |
1366 // JDK 1.2 version | |
1367 typedef struct real_jzentry12 { /* Zip file entry */ | |
1368 char *name; /* entry name */ | |
1369 jint time; /* modification time */ | |
1370 jint size; /* size of uncompressed data */ | |
1371 jint csize; /* size of compressed data (zero if uncompressed) */ | |
1372 jint crc; /* crc of uncompressed data */ | |
1373 char *comment; /* optional zip file comment */ | |
1374 jbyte *extra; /* optional extra data */ | |
1375 jint pos; /* position of LOC header (if negative) or data */ | |
1376 struct real_jzentry12 *next; /* next entry in hash table */ | |
1377 } real_jzentry12; | |
1378 | |
1379 typedef struct real_jzfile12 { /* Zip file */ | |
1380 char *name; /* zip file name */ | |
1381 jint refs; /* number of active references */ | |
1382 jint fd; /* open file descriptor */ | |
1383 void *lock; /* read lock */ | |
1384 char *comment; /* zip file comment */ | |
1385 char *msg; /* zip error message */ | |
1386 real_jzentry12 *entries; /* array of zip entries */ | |
1387 jint total; /* total number of entries */ | |
1388 real_jzentry12 **table; /* hash table of entries */ | |
1389 jint tablelen; /* number of buckets */ | |
1390 jzfile *next; /* next zip file in search list */ | |
1391 } real_jzfile12; | |
1392 | |
1393 | |
1394 void ClassPathDirEntry::compile_the_world(Handle loader, TRAPS) { | |
1395 // For now we only compile all methods in all classes in zip/jar files | |
1396 tty->print_cr("CompileTheWorld : Skipped classes in %s", _dir); | |
1397 tty->cr(); | |
1398 } | |
1399 | |
1400 | |
1401 bool ClassPathDirEntry::is_rt_jar() { | |
1402 return false; | |
1403 } | |
1404 | |
1405 void ClassPathZipEntry::compile_the_world(Handle loader, TRAPS) { | |
1406 if (JDK_Version::is_jdk12x_version()) { | |
1407 compile_the_world12(loader, THREAD); | |
1408 } else { | |
1409 compile_the_world13(loader, THREAD); | |
1410 } | |
1411 if (HAS_PENDING_EXCEPTION) { | |
1412 if (PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
1413 CLEAR_PENDING_EXCEPTION; | |
1414 tty->print_cr("\nCompileTheWorld : Ran out of memory\n"); | |
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1415 tty->print_cr("Increase class metadata storage if a limit was set"); |
0 | 1416 } else { |
1417 tty->print_cr("\nCompileTheWorld : Unexpected exception occurred\n"); | |
1418 } | |
1419 } | |
1420 } | |
1421 | |
1422 // Version that works for JDK 1.3.x | |
1423 void ClassPathZipEntry::compile_the_world13(Handle loader, TRAPS) { | |
1424 real_jzfile13* zip = (real_jzfile13*) _zip; | |
1425 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
1426 tty->cr(); | |
1427 // Iterate over all entries in zip file | |
1428 for (int n = 0; ; n++) { | |
1429 real_jzentry13 * ze = (real_jzentry13 *)((*GetNextEntry)(_zip, n)); | |
1430 if (ze == NULL) break; | |
1431 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
1432 } | |
1433 } | |
1434 | |
1435 | |
1436 // Version that works for JDK 1.2.x | |
1437 void ClassPathZipEntry::compile_the_world12(Handle loader, TRAPS) { | |
1438 real_jzfile12* zip = (real_jzfile12*) _zip; | |
1439 tty->print_cr("CompileTheWorld : Compiling all classes in %s", zip->name); | |
1440 tty->cr(); | |
1441 // Iterate over all entries in zip file | |
1442 for (int n = 0; ; n++) { | |
1443 real_jzentry12 * ze = (real_jzentry12 *)((*GetNextEntry)(_zip, n)); | |
1444 if (ze == NULL) break; | |
1445 ClassLoader::compile_the_world_in(ze->name, loader, CHECK); | |
1446 } | |
1447 } | |
1448 | |
1449 bool ClassPathZipEntry::is_rt_jar() { | |
1450 if (JDK_Version::is_jdk12x_version()) { | |
1451 return is_rt_jar12(); | |
1452 } else { | |
1453 return is_rt_jar13(); | |
1454 } | |
1455 } | |
1456 | |
1457 // JDK 1.3 version | |
1458 bool ClassPathZipEntry::is_rt_jar13() { | |
1459 real_jzfile13* zip = (real_jzfile13*) _zip; | |
1460 int len = (int)strlen(zip->name); | |
1461 // Check whether zip name ends in "rt.jar" | |
1462 // This will match other archives named rt.jar as well, but this is | |
1463 // only used for debugging. | |
1464 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
1465 } | |
1466 | |
1467 // JDK 1.2 version | |
1468 bool ClassPathZipEntry::is_rt_jar12() { | |
1469 real_jzfile12* zip = (real_jzfile12*) _zip; | |
1470 int len = (int)strlen(zip->name); | |
1471 // Check whether zip name ends in "rt.jar" | |
1472 // This will match other archives named rt.jar as well, but this is | |
1473 // only used for debugging. | |
1474 return (len >= 6) && (strcasecmp(zip->name + len - 6, "rt.jar") == 0); | |
1475 } | |
1476 | |
1477 void LazyClassPathEntry::compile_the_world(Handle loader, TRAPS) { | |
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1478 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1479 if (cpe != NULL) { |
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1480 cpe->compile_the_world(loader, CHECK); |
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1481 } |
0 | 1482 } |
1483 | |
1484 bool LazyClassPathEntry::is_rt_jar() { | |
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1485 Thread* THREAD = Thread::current(); |
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1486 ClassPathEntry* cpe = resolve_entry(THREAD); |
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1487 return (cpe != NULL) ? cpe->is_jar_file() : false; |
0 | 1488 } |
1489 | |
1490 void ClassLoader::compile_the_world() { | |
1491 EXCEPTION_MARK; | |
1492 HandleMark hm(THREAD); | |
1493 ResourceMark rm(THREAD); | |
1494 // Make sure we don't run with background compilation | |
1495 BackgroundCompilation = false; | |
1496 // Find bootstrap loader | |
1497 Handle system_class_loader (THREAD, SystemDictionary::java_system_loader()); | |
1498 // Iterate over all bootstrap class path entries | |
1499 ClassPathEntry* e = _first_entry; | |
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1500 jlong start = os::javaTimeMillis(); |
0 | 1501 while (e != NULL) { |
1502 // We stop at rt.jar, unless it is the first bootstrap path entry | |
1503 if (e->is_rt_jar() && e != _first_entry) break; | |
1504 e->compile_the_world(system_class_loader, CATCH); | |
1505 e = e->next(); | |
1506 } | |
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1507 jlong end = os::javaTimeMillis(); |
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1508 tty->print_cr("CompileTheWorld : Done (%d classes, %d methods, " JLONG_FORMAT " ms)", |
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1509 _compile_the_world_class_counter, _compile_the_world_method_counter, (end - start)); |
0 | 1510 { |
1511 // Print statistics as if before normal exit: | |
1512 extern void print_statistics(); | |
1513 print_statistics(); | |
1514 } | |
1515 vm_exit(0); | |
1516 } | |
1517 | |
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|
1518 int ClassLoader::_compile_the_world_class_counter = 0; |
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1519 int ClassLoader::_compile_the_world_method_counter = 0; |
1188
99af867dfa05
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|
1520 static int _codecache_sweep_counter = 0; |
0 | 1521 |
2257 | 1522 // Filter out all exceptions except OOMs |
1523 static void clear_pending_exception_if_not_oom(TRAPS) { | |
1524 if (HAS_PENDING_EXCEPTION && | |
1525 !PENDING_EXCEPTION->is_a(SystemDictionary::OutOfMemoryError_klass())) { | |
1526 CLEAR_PENDING_EXCEPTION; | |
1527 } | |
1528 // The CHECK at the caller will propagate the exception out | |
1529 } | |
1530 | |
12255
3a4e6c929bf3
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|
1531 /** |
3a4e6c929bf3
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|
1532 * Returns if the given method should be compiled when doing compile-the-world. |
3a4e6c929bf3
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|
1533 * |
3a4e6c929bf3
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|
1534 * TODO: This should be a private method in a CompileTheWorld class. |
3a4e6c929bf3
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|
1535 */ |
3a4e6c929bf3
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|
1536 static bool can_be_compiled(methodHandle m, int comp_level) { |
3a4e6c929bf3
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|
1537 assert(CompileTheWorld, "must be"); |
3a4e6c929bf3
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|
1538 |
3a4e6c929bf3
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|
1539 // It's not valid to compile a native wrapper for MethodHandle methods |
3a4e6c929bf3
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12135
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|
1540 // that take a MemberName appendix since the bytecode signature is not |
3a4e6c929bf3
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|
1541 // correct. |
3a4e6c929bf3
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12135
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|
1542 vmIntrinsics::ID iid = m->intrinsic_id(); |
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
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diff
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|
1543 if (MethodHandles::is_signature_polymorphic(iid) && MethodHandles::has_member_arg(iid)) { |
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
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|
1544 return false; |
3a4e6c929bf3
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|
1545 } |
3a4e6c929bf3
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12135
diff
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|
1546 |
3a4e6c929bf3
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|
1547 return CompilationPolicy::can_be_compiled(m, comp_level); |
3a4e6c929bf3
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|
1548 } |
3a4e6c929bf3
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|
1549 |
0 | 1550 void ClassLoader::compile_the_world_in(char* name, Handle loader, TRAPS) { |
1551 int len = (int)strlen(name); | |
1552 if (len > 6 && strcmp(".class", name + len - 6) == 0) { | |
1553 // We have a .class file | |
1554 char buffer[2048]; | |
1555 strncpy(buffer, name, len - 6); | |
1556 buffer[len-6] = 0; | |
1557 // If the file has a period after removing .class, it's not really a | |
1558 // valid class file. The class loader will check everything else. | |
1559 if (strchr(buffer, '.') == NULL) { | |
9150
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|
1560 _compile_the_world_class_counter++; |
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7185
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|
1561 if (_compile_the_world_class_counter > CompileTheWorldStopAt) return; |
723 | 1562 |
1563 // Construct name without extension | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2139
diff
changeset
|
1564 TempNewSymbol sym = SymbolTable::new_symbol(buffer, CHECK); |
723 | 1565 // Use loader to load and initialize class |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6197
diff
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|
1566 Klass* ik = SystemDictionary::resolve_or_null(sym, loader, Handle(), THREAD); |
723 | 1567 instanceKlassHandle k (THREAD, ik); |
1568 if (k.not_null() && !HAS_PENDING_EXCEPTION) { | |
1569 k->initialize(THREAD); | |
1570 } | |
1571 bool exception_occurred = HAS_PENDING_EXCEPTION; | |
2257 | 1572 clear_pending_exception_if_not_oom(CHECK); |
723 | 1573 if (CompileTheWorldPreloadClasses && k.not_null()) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6197
diff
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|
1574 ConstantPool::preload_and_initialize_all_classes(k->constants(), THREAD); |
723 | 1575 if (HAS_PENDING_EXCEPTION) { |
1576 // If something went wrong in preloading we just ignore it | |
2257 | 1577 clear_pending_exception_if_not_oom(CHECK); |
9150
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7185
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|
1578 tty->print_cr("Preloading failed for (%d) %s", _compile_the_world_class_counter, buffer); |
0 | 1579 } |
723 | 1580 } |
1581 | |
9150
b8b081e53312
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7185
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|
1582 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
|
1583 if (k.is_null() || exception_occurred) { |
0 | 1584 // If something went wrong (e.g. ExceptionInInitializerError) we skip this class |
9150
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7185
diff
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|
1585 tty->print_cr("CompileTheWorld (%d) : Skipping %s", _compile_the_world_class_counter, buffer); |
0 | 1586 } else { |
9150
b8b081e53312
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7185
diff
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|
1587 tty->print_cr("CompileTheWorld (%d) : %s", _compile_the_world_class_counter, buffer); |
0 | 1588 // Preload all classes to get around uncommon traps |
1589 // Iterate over all methods in class | |
10200
d1c9384eecb4
8012322: Tiered: CompilationPolicy::can_be_compiled(CompLevel_all) mistakenly return false
iignatyev
parents:
9150
diff
changeset
|
1590 int comp_level = CompilationPolicy::policy()->initial_compile_level(); |
0 | 1591 for (int n = 0; n < k->methods()->length(); n++) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6197
diff
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|
1592 methodHandle m (THREAD, k->methods()->at(n)); |
12255
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
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parents:
12135
diff
changeset
|
1593 if (can_be_compiled(m, comp_level)) { |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1142
diff
changeset
|
1594 if (++_codecache_sweep_counter == CompileTheWorldSafepointInterval) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1142
diff
changeset
|
1595 // Give sweeper a chance to keep up with CTW |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1142
diff
changeset
|
1596 VM_ForceSafepoint op; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1142
diff
changeset
|
1597 VMThread::execute(&op); |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1142
diff
changeset
|
1598 _codecache_sweep_counter = 0; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
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1142
diff
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|
1599 } |
0 | 1600 // Force compilation |
10200
d1c9384eecb4
8012322: Tiered: CompilationPolicy::can_be_compiled(CompLevel_all) mistakenly return false
iignatyev
parents:
9150
diff
changeset
|
1601 CompileBroker::compile_method(m, InvocationEntryBci, comp_level, |
0 | 1602 methodHandle(), 0, "CTW", THREAD); |
1603 if (HAS_PENDING_EXCEPTION) { | |
2257 | 1604 clear_pending_exception_if_not_oom(CHECK); |
12255
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
twisti
parents:
12135
diff
changeset
|
1605 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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8011933: add number of classes, methods and time spent to CompileTheWorld
twisti
parents:
7185
diff
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|
1606 } else { |
b8b081e53312
8011933: add number of classes, methods and time spent to CompileTheWorld
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parents:
7185
diff
changeset
|
1607 _compile_the_world_method_counter++; |
0 | 1608 } |
3837
43f9d800f276
7066339: Tiered: policy should make consistent decisions about osr levels
iveresov
parents:
2426
diff
changeset
|
1609 if (TieredCompilation && TieredStopAtLevel >= CompLevel_full_optimization) { |
723 | 1610 // Clobber the first compile and force second tier compilation |
1611 nmethod* nm = m->code(); | |
1612 if (nm != NULL) { | |
1613 // Throw out the code so that the code cache doesn't fill up | |
1614 nm->make_not_entrant(); | |
1615 m->clear_code(); | |
1616 } | |
1783 | 1617 CompileBroker::compile_method(m, InvocationEntryBci, CompLevel_full_optimization, |
723 | 1618 methodHandle(), 0, "CTW", THREAD); |
1619 if (HAS_PENDING_EXCEPTION) { | |
2257 | 1620 clear_pending_exception_if_not_oom(CHECK); |
12255
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
diff
changeset
|
1621 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
9150
b8b081e53312
8011933: add number of classes, methods and time spent to CompileTheWorld
twisti
parents:
7185
diff
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|
1622 } else { |
b8b081e53312
8011933: add number of classes, methods and time spent to CompileTheWorld
twisti
parents:
7185
diff
changeset
|
1623 _compile_the_world_method_counter++; |
723 | 1624 } |
0 | 1625 } |
12255
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
twisti
parents:
12135
diff
changeset
|
1626 } else { |
3a4e6c929bf3
8024275: During CTW: assert(sig_bt[member_arg_pos] == T_OBJECT) failed: dispatch argument must be an object
twisti
parents:
12135
diff
changeset
|
1627 tty->print_cr("CompileTheWorld (%d) : Skipping method: %s", _compile_the_world_class_counter, m->name_and_sig_as_C_string()); |
0 | 1628 } |
723 | 1629 |
1630 nmethod* nm = m->code(); | |
1631 if (nm != NULL) { | |
1632 // Throw out the code so that the code cache doesn't fill up | |
1633 nm->make_not_entrant(); | |
1634 m->clear_code(); | |
0 | 1635 } |
1636 } | |
1637 } | |
1638 } | |
1639 } | |
1640 } | |
1641 } | |
1642 | |
1643 #endif //PRODUCT | |
2139
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1644 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1645 // Please keep following two functions at end of this file. With them placed at top or in middle of the file, |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1646 // they could get inlined by agressive compiler, an unknown trick, see bug 6966589. |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1647 void PerfClassTraceTime::initialize() { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1648 if (!UsePerfData) return; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1649 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1650 if (_eventp != NULL) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1651 // increment the event counter |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1652 _eventp->inc(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1653 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1654 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1655 // stop the current active thread-local timer to measure inclusive time |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1656 _prev_active_event = -1; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1657 for (int i=0; i < EVENT_TYPE_COUNT; i++) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1658 if (_timers[i].is_active()) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1659 assert(_prev_active_event == -1, "should have only one active timer"); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1660 _prev_active_event = i; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1661 _timers[i].stop(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1662 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1663 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1664 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1665 if (_recursion_counters == NULL || (_recursion_counters[_event_type])++ == 0) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1666 // start the inclusive timer if not recursively called |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1667 _t.start(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1668 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1669 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1670 // start thread-local timer of the given event type |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1671 if (!_timers[_event_type].is_active()) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1672 _timers[_event_type].start(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1673 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1674 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1675 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1676 PerfClassTraceTime::~PerfClassTraceTime() { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1677 if (!UsePerfData) return; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1678 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1679 // stop the thread-local timer as the event completes |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1680 // and resume the thread-local timer of the event next on the stack |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1681 _timers[_event_type].stop(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1682 jlong selftime = _timers[_event_type].ticks(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1683 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1684 if (_prev_active_event >= 0) { |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1685 _timers[_prev_active_event].start(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1686 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1687 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1688 if (_recursion_counters != NULL && --(_recursion_counters[_event_type]) > 0) return; |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1689 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1690 // increment the counters only on the leaf call |
75efcee5ac47
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minqi
parents:
1980
diff
changeset
|
1691 _t.stop(); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1692 _timep->inc(_t.ticks()); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1693 if (_selftimep != NULL) { |
75efcee5ac47
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minqi
parents:
1980
diff
changeset
|
1694 _selftimep->inc(selftime); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1695 } |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1696 // add all class loading related event selftime to the accumulated time counter |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1697 ClassLoader::perf_accumulated_time()->inc(selftime); |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1698 |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1699 // reset the timer |
75efcee5ac47
6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1700 _timers[_event_type].reset(); |
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6966589: hs16-b08 causes java.lang.StackOverflowError
minqi
parents:
1980
diff
changeset
|
1701 } |