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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "cds/cds_globals.hpp"
26 #include "cds/classListWriter.hpp"
27 #include "cds/lambdaFormInvokers.inline.hpp"
28 #include "classfile/classFileStream.hpp"
29 #include "classfile/classLoader.hpp"
30 #include "classfile/classLoaderData.hpp"
31 #include "classfile/classLoaderDataGraph.hpp"
32 #include "classfile/moduleEntry.hpp"
33 #include "classfile/systemDictionaryShared.hpp"
34 #include "memory/resourceArea.hpp"
35 #include "oops/constantPool.inline.hpp"
36 #include "oops/instanceKlass.hpp"
37 #include "runtime/mutexLocker.hpp"
38
39 fileStream* ClassListWriter::_classlist_file = nullptr;
40
41 void ClassListWriter::init() {
42 // For -XX:DumpLoadedClassList=<file> option
43 if (DumpLoadedClassList != nullptr) {
44 const char* list_name = make_log_name(DumpLoadedClassList, nullptr);
45 _classlist_file = new(mtInternal)
46 fileStream(list_name);
47 _classlist_file->print_cr("# NOTE: Do not modify this file.");
48 _classlist_file->print_cr("#");
49 _classlist_file->print_cr("# This file is generated via the -XX:DumpLoadedClassList=<class_list_file> option");
50 _classlist_file->print_cr("# and is used at CDS archive dump time (see -Xshare:dump).");
51 _classlist_file->print_cr("#");
52 FREE_C_HEAP_ARRAY(char, list_name);
53 }
54 }
55
56 void ClassListWriter::write(const InstanceKlass* k, const ClassFileStream* cfs) {
303 }
304 }
305
306 if (print) {
307 outputStream* stream = _classlist_file;
308 stream->print("@cp %s", ik->name()->as_C_string());
309 for (int i = 0; i < list.length(); i++) {
310 if (list.at(i)) {
311 constantTag cp_tag = cp->tag_at(i).value();
312 assert(cp_tag.value() == JVM_CONSTANT_Class ||
313 cp_tag.value() == JVM_CONSTANT_Fieldref ||
314 cp_tag.value() == JVM_CONSTANT_Methodref||
315 cp_tag.value() == JVM_CONSTANT_InterfaceMethodref ||
316 cp_tag.value() == JVM_CONSTANT_InvokeDynamic, "sanity");
317 stream->print(" %d", i);
318 }
319 }
320 stream->cr();
321 }
322 }
|
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 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "cds/cds_globals.hpp"
26 #include "cds/classListParser.hpp"
27 #include "cds/classListWriter.hpp"
28 #include "cds/lambdaFormInvokers.inline.hpp"
29 #include "classfile/classFileStream.hpp"
30 #include "classfile/classLoader.hpp"
31 #include "classfile/classLoaderData.hpp"
32 #include "classfile/classLoaderDataGraph.hpp"
33 #include "classfile/moduleEntry.hpp"
34 #include "classfile/symbolTable.hpp"
35 #include "classfile/systemDictionaryShared.hpp"
36 #include "memory/resourceArea.hpp"
37 #include "oops/constantPool.inline.hpp"
38 #include "oops/instanceKlass.hpp"
39 #include "runtime/javaCalls.hpp"
40 #include "runtime/mutexLocker.hpp"
41
42 fileStream* ClassListWriter::_classlist_file = nullptr;
43
44 void ClassListWriter::init() {
45 // For -XX:DumpLoadedClassList=<file> option
46 if (DumpLoadedClassList != nullptr) {
47 const char* list_name = make_log_name(DumpLoadedClassList, nullptr);
48 _classlist_file = new(mtInternal)
49 fileStream(list_name);
50 _classlist_file->print_cr("# NOTE: Do not modify this file.");
51 _classlist_file->print_cr("#");
52 _classlist_file->print_cr("# This file is generated via the -XX:DumpLoadedClassList=<class_list_file> option");
53 _classlist_file->print_cr("# and is used at CDS archive dump time (see -Xshare:dump).");
54 _classlist_file->print_cr("#");
55 FREE_C_HEAP_ARRAY(char, list_name);
56 }
57 }
58
59 void ClassListWriter::write(const InstanceKlass* k, const ClassFileStream* cfs) {
306 }
307 }
308
309 if (print) {
310 outputStream* stream = _classlist_file;
311 stream->print("@cp %s", ik->name()->as_C_string());
312 for (int i = 0; i < list.length(); i++) {
313 if (list.at(i)) {
314 constantTag cp_tag = cp->tag_at(i).value();
315 assert(cp_tag.value() == JVM_CONSTANT_Class ||
316 cp_tag.value() == JVM_CONSTANT_Fieldref ||
317 cp_tag.value() == JVM_CONSTANT_Methodref||
318 cp_tag.value() == JVM_CONSTANT_InterfaceMethodref ||
319 cp_tag.value() == JVM_CONSTANT_InvokeDynamic, "sanity");
320 stream->print(" %d", i);
321 }
322 }
323 stream->cr();
324 }
325 }
326
327 void ClassListWriter::write_loader_negative_lookup_cache_for(oop loader, const char* loader_type) {
328 TempNewSymbol method = SymbolTable::new_symbol("negativeLookupCacheContents");
329 TempNewSymbol signature = SymbolTable::new_symbol("()Ljava/lang/String;");
330
331 EXCEPTION_MARK;
332 HandleMark hm(THREAD);
333
334 JavaValue result(T_OBJECT);
335 JavaCalls::call_virtual(&result,
336 Handle(THREAD, loader),
337 loader->klass(),
338 method,
339 signature,
340 CHECK);
341
342 if (HAS_PENDING_EXCEPTION) {
343 log_warning(cds)("Error during BuiltinClassLoader::negativeLookupCacheContents() call for %s loader", loader_type);
344 CLEAR_PENDING_EXCEPTION;
345 return;
346 } else if (result.get_oop() == nullptr) {
347 return;
348 }
349
350 ResourceMark rm;
351 const char* cache_contents = java_lang_String::as_utf8_string(result.get_oop());
352 log_debug(cds)("%s loader negative cache: %s", loader_type, cache_contents);
353
354 outputStream* stream = _classlist_file;
355 const size_t buffer_size = strlen(ClassListParser::LOADER_NEGATIVE_CACHE_TAG) + 1 /* for space*/
356 + strlen(loader_type) + 1 /* for space */ + strlen(cache_contents) + 1 /* for null character */;
357 char* buffer = NEW_C_HEAP_ARRAY(char, buffer_size, mtInternal);
358 _classlist_file->set_scratch_buffer(buffer, buffer_size);
359 MutexLocker lock2(ClassListFile_lock, Mutex::_no_safepoint_check_flag);
360 stream->print("%s %s %s", ClassListParser::LOADER_NEGATIVE_CACHE_TAG, loader_type, cache_contents);
361 stream->cr();
362 _classlist_file->set_scratch_buffer(nullptr, 0);
363 }
364
365 void ClassListWriter::write_loader_negative_lookup_cache() {
366 if (!is_enabled()) {
367 return;
368 }
369
370 write_loader_negative_lookup_cache_for(SystemDictionary::java_platform_loader(), "platform");
371 write_loader_negative_lookup_cache_for(SystemDictionary::java_system_loader(), "app");
372 }
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