1 /*
2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
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 *
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 *
26 #include "gc_implementation/shared/vmGCOperations.hpp"
27 #include "runtime/javaCalls.hpp"
28 #include "services/diagnosticArgument.hpp"
29 #include "services/diagnosticCommand.hpp"
30 #include "services/diagnosticFramework.hpp"
31 #include "services/heapDumper.hpp"
32 #include "services/management.hpp"
33
34 void DCmdRegistrant::register_dcmds(){
35 // Registration of the diagnostic commands
36 // First boolean argument specifies if the command is enabled
37 // Second boolean argument specifies if the command is hidden
38 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false));
39 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false));
40 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(true, false));
41 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(true, false));
42 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(true, false));
43 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(true, false));
44 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(true, false));
45 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(true, false));
46 #if INCLUDE_SERVICES // Heap dumping supported
47 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(true, false));
48 #endif // INCLUDE_SERVICES
49 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(true, false));
50 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(true, false));
51
52 //Enhanced JMX Agent Support
53 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(true,false));
54 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(true,false));
55 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(true,false));
56
57 }
58
59 #ifndef HAVE_EXTRA_DCMD
60 void DCmdRegistrant::register_dcmds_ext(){
61 // Do nothing here
62 }
63 #endif
64
65
66 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
67 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
68 _cmd("command name", "The name of the command for which we want help",
69 "STRING", false) {
70 _dcmdparser.add_dcmd_option(&_all);
71 _dcmdparser.add_dcmd_argument(&_cmd);
235 return dcmd->_dcmdparser.num_arguments();
236 } else {
237 return 0;
238 }
239 }
240
241 void SystemGCDCmd::execute(TRAPS) {
242 Universe::heap()->collect(GCCause::_java_lang_system_gc);
243 }
244
245 void RunFinalizationDCmd::execute(TRAPS) {
246 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
247 true, CHECK);
248 instanceKlassHandle klass(THREAD, k);
249 JavaValue result(T_VOID);
250 JavaCalls::call_static(&result, klass,
251 vmSymbols::run_finalization_name(),
252 vmSymbols::void_method_signature(), CHECK);
253 }
254
255 #if INCLUDE_SERVICES // Heap dumping supported
256 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
257 DCmdWithParser(output, heap),
258 _filename("filename","Name of the dump file", "STRING",true),
259 _all("-all", "Dump all objects, including unreachable objects",
260 "BOOLEAN", false, "false") {
261 _dcmdparser.add_dcmd_option(&_all);
262 _dcmdparser.add_dcmd_argument(&_filename);
263 }
264
265 void HeapDumpDCmd::execute(TRAPS) {
266 // Request a full GC before heap dump if _all is false
267 // This helps reduces the amount of unreachable objects in the dump
268 // and makes it easier to browse.
269 HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
270 int res = dumper.dump(_filename.value());
271 if (res == 0) {
272 output()->print_cr("Heap dump file created");
273 } else {
274 // heap dump failed
275 ResourceMark rm;
276 char* error = dumper.error_as_C_string();
277 if (error == NULL) {
278 output()->print_cr("Dump failed - reason unknown");
279 } else {
280 output()->print_cr("%s", error);
281 }
282 }
283 }
284
285 int HeapDumpDCmd::num_arguments() {
286 ResourceMark rm;
287 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
288 if (dcmd != NULL) {
289 DCmdMark mark(dcmd);
290 return dcmd->_dcmdparser.num_arguments();
291 } else {
292 return 0;
293 }
294 }
295 #endif // INCLUDE_SERVICES
296
297 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
298 DCmdWithParser(output, heap),
299 _all("-all", "Inspect all objects, including unreachable objects",
300 "BOOLEAN", false, "false") {
301 _dcmdparser.add_dcmd_option(&_all);
302 }
303
304 void ClassHistogramDCmd::execute(TRAPS) {
305 VM_GC_HeapInspection heapop(output(),
306 !_all.value() /* request full gc if false */,
307 true /* need_prologue */);
308 VMThread::execute(&heapop);
309 }
310
311 int ClassHistogramDCmd::num_arguments() {
312 ResourceMark rm;
313 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
314 if (dcmd != NULL) {
315 DCmdMark mark(dcmd);
316 return dcmd->_dcmdparser.num_arguments();
317 } else {
318 return 0;
319 }
320 }
321
322 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
323 DCmdWithParser(output, heap),
324 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false") {
325 _dcmdparser.add_dcmd_option(&_locks);
326 }
327
328 void ThreadDumpDCmd::execute(TRAPS) {
329 // thread stacks
330 VM_PrintThreads op1(output(), _locks.value());
331 VMThread::execute(&op1);
332
333 // JNI global handles
334 VM_PrintJNI op2(output());
335 VMThread::execute(&op2);
336
337 // Deadlock detection
338 VM_FindDeadlocks op3(output());
339 VMThread::execute(&op3);
340 }
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1 /*
2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
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 *
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 *
26 #include "gc_implementation/shared/vmGCOperations.hpp"
27 #include "runtime/javaCalls.hpp"
28 #include "services/diagnosticArgument.hpp"
29 #include "services/diagnosticCommand.hpp"
30 #include "services/diagnosticFramework.hpp"
31 #include "services/heapDumper.hpp"
32 #include "services/management.hpp"
33
34 void DCmdRegistrant::register_dcmds(){
35 // Registration of the diagnostic commands
36 // First boolean argument specifies if the command is enabled
37 // Second boolean argument specifies if the command is hidden
38 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false));
39 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false));
40 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(true, false));
41 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(true, false));
42 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(true, false));
43 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(true, false));
44 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(true, false));
45 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(true, false));
46 #if INCLUDE_SERVICES // Heap dumping/inspection supported
47 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(true, false));
48 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(true, false));
49 if (UnlockDiagnosticVMOptions) {
50 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(true, false));
51 }
52 #endif // INCLUDE_SERVICES
53 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(true, false));
54 //Enhanced JMX Agent Support
55 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(true,false));
56 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(true,false));
57 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(true,false));
58
59 }
60
61 #ifndef HAVE_EXTRA_DCMD
62 void DCmdRegistrant::register_dcmds_ext(){
63 // Do nothing here
64 }
65 #endif
66
67
68 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
69 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
70 _cmd("command name", "The name of the command for which we want help",
71 "STRING", false) {
72 _dcmdparser.add_dcmd_option(&_all);
73 _dcmdparser.add_dcmd_argument(&_cmd);
237 return dcmd->_dcmdparser.num_arguments();
238 } else {
239 return 0;
240 }
241 }
242
243 void SystemGCDCmd::execute(TRAPS) {
244 Universe::heap()->collect(GCCause::_java_lang_system_gc);
245 }
246
247 void RunFinalizationDCmd::execute(TRAPS) {
248 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
249 true, CHECK);
250 instanceKlassHandle klass(THREAD, k);
251 JavaValue result(T_VOID);
252 JavaCalls::call_static(&result, klass,
253 vmSymbols::run_finalization_name(),
254 vmSymbols::void_method_signature(), CHECK);
255 }
256
257 #if INCLUDE_SERVICES // Heap dumping/inspection supported
258 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
259 DCmdWithParser(output, heap),
260 _filename("filename","Name of the dump file", "STRING",true),
261 _all("-all", "Dump all objects, including unreachable objects",
262 "BOOLEAN", false, "false") {
263 _dcmdparser.add_dcmd_option(&_all);
264 _dcmdparser.add_dcmd_argument(&_filename);
265 }
266
267 void HeapDumpDCmd::execute(TRAPS) {
268 // Request a full GC before heap dump if _all is false
269 // This helps reduces the amount of unreachable objects in the dump
270 // and makes it easier to browse.
271 HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
272 int res = dumper.dump(_filename.value());
273 if (res == 0) {
274 output()->print_cr("Heap dump file created");
275 } else {
276 // heap dump failed
277 ResourceMark rm;
278 char* error = dumper.error_as_C_string();
279 if (error == NULL) {
280 output()->print_cr("Dump failed - reason unknown");
281 } else {
282 output()->print_cr("%s", error);
283 }
284 }
285 }
286
287 int HeapDumpDCmd::num_arguments() {
288 ResourceMark rm;
289 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
290 if (dcmd != NULL) {
291 DCmdMark mark(dcmd);
292 return dcmd->_dcmdparser.num_arguments();
293 } else {
294 return 0;
295 }
296 }
297
298 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
299 DCmdWithParser(output, heap),
300 _all("-all", "Inspect all objects, including unreachable objects",
301 "BOOLEAN", false, "false") {
302 _dcmdparser.add_dcmd_option(&_all);
303 }
304
305 void ClassHistogramDCmd::execute(TRAPS) {
306 VM_GC_HeapInspection heapop(output(),
307 !_all.value() /* request full gc if false */,
308 true /* need_prologue */);
309 VMThread::execute(&heapop);
310 }
311
312 int ClassHistogramDCmd::num_arguments() {
313 ResourceMark rm;
314 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
315 if (dcmd != NULL) {
316 DCmdMark mark(dcmd);
317 return dcmd->_dcmdparser.num_arguments();
318 } else {
319 return 0;
320 }
321 }
322
323 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total"
324 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) :
325 DCmdWithParser(output, heap),
326 _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets",
327 "BOOLEAN", false, "false"),
328 _all("-all", "Show all columns",
329 "BOOLEAN", false, "false"),
330 _help("-help", "Show meaning of all the columns",
331 "BOOLEAN", false, "false"),
332 _columns("columns", "Comma-separated list of all the columns to show. "
333 "If not specified, the following columns are shown: " DEFAULT_COLUMNS,
334 "STRING", false) {
335 _dcmdparser.add_dcmd_option(&_all);
336 _dcmdparser.add_dcmd_option(&_csv);
337 _dcmdparser.add_dcmd_option(&_help);
338 _dcmdparser.add_dcmd_argument(&_columns);
339 }
340
341 void ClassStatsDCmd::execute(TRAPS) {
342 VM_GC_HeapInspection heapop(output(),
343 true, /* request_full_gc */
344 true /* need_prologue */);
345 heapop.set_csv_format(_csv.value());
346 heapop.set_print_help(_help.value());
347 heapop.set_print_class_stats(true);
348 if (_all.value()) {
349 if (_columns.has_value()) {
350 output()->print_cr("Cannot specify -all and individual columns at the same time");
351 return;
352 } else {
353 heapop.set_columns(NULL);
354 }
355 } else {
356 if (_columns.has_value()) {
357 heapop.set_columns(_columns.value());
358 } else {
359 heapop.set_columns(DEFAULT_COLUMNS);
360 }
361 }
362 VMThread::execute(&heapop);
363 }
364
365 int ClassStatsDCmd::num_arguments() {
366 ResourceMark rm;
367 ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false);
368 if (dcmd != NULL) {
369 DCmdMark mark(dcmd);
370 return dcmd->_dcmdparser.num_arguments();
371 } else {
372 return 0;
373 }
374 }
375 #endif // INCLUDE_SERVICES
376
377 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
378 DCmdWithParser(output, heap),
379 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false") {
380 _dcmdparser.add_dcmd_option(&_locks);
381 }
382
383 void ThreadDumpDCmd::execute(TRAPS) {
384 // thread stacks
385 VM_PrintThreads op1(output(), _locks.value());
386 VMThread::execute(&op1);
387
388 // JNI global handles
389 VM_PrintJNI op2(output());
390 VMThread::execute(&op2);
391
392 // Deadlock detection
393 VM_FindDeadlocks op3(output());
394 VMThread::execute(&op3);
395 }
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