1 /*
2 * Copyright (c) 2011, 2019, 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 *
23 */
24
25 #include "precompiled.hpp"
26 #include "jvm.h"
27 #include "classfile/classLoaderHierarchyDCmd.hpp"
28 #include "classfile/classLoaderStats.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "compiler/directivesParser.hpp"
31 #include "gc/shared/gcVMOperations.hpp"
32 #include "memory/metaspace/metaspaceDCmd.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "memory/universe.hpp"
35 #include "oops/objArrayOop.inline.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "oops/typeArrayOop.inline.hpp"
38 #include "runtime/fieldDescriptor.inline.hpp"
39 #include "runtime/flags/jvmFlag.hpp"
40 #include "runtime/handles.inline.hpp"
41 #include "runtime/interfaceSupport.inline.hpp"
42 #include "runtime/javaCalls.hpp"
43 #include "runtime/os.hpp"
44 #include "services/diagnosticArgument.hpp"
45 #include "services/diagnosticCommand.hpp"
46 #include "services/diagnosticFramework.hpp"
47 #include "services/heapDumper.hpp"
48 #include "services/management.hpp"
49 #include "services/writeableFlags.hpp"
50 #include "utilities/debug.hpp"
51 #include "utilities/events.hpp"
52 #include "utilities/formatBuffer.hpp"
53 #include "utilities/macros.hpp"
54
55
56 static void loadAgentModule(TRAPS) {
57 ResourceMark rm(THREAD);
58 HandleMark hm(THREAD);
59
60 JavaValue result(T_OBJECT);
61 Handle h_module_name = java_lang_String::create_from_str("jdk.management.agent", CHECK);
62 JavaCalls::call_static(&result,
63 SystemDictionary::module_Modules_klass(),
64 vmSymbols::loadModule_name(),
65 vmSymbols::loadModule_signature(),
66 h_module_name,
67 THREAD);
68 }
69
70 void DCmdRegistrant::register_dcmds(){
71 // Registration of the diagnostic commands
72 // First argument specifies which interfaces will export the command
73 // Second argument specifies if the command is enabled
74 // Third argument specifies if the command is hidden
75 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI
76 | DCmd_Source_MBean;
77 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(full_export, true, false));
78 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(full_export, true, false));
79 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(full_export, true, false));
80 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(full_export, true, false));
81 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(full_export, true, false));
82 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SetVMFlagDCmd>(full_export, true, false));
83 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMDynamicLibrariesDCmd>(full_export, true, false));
84 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(full_export, true, false));
85 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMInfoDCmd>(full_export, true, false));
86 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(full_export, true, false));
87 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(full_export, true, false));
88 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapInfoDCmd>(full_export, true, false));
89 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<FinalizerInfoDCmd>(full_export, true, false));
90 #if INCLUDE_SERVICES
91 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false));
92 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(full_export, true, false));
93 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(full_export, true, false));
94 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemDictionaryDCmd>(full_export, true, false));
95 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHierarchyDCmd>(full_export, true, false));
96 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SymboltableDCmd>(full_export, true, false));
97 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<StringtableDCmd>(full_export, true, false));
98 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<metaspace::MetaspaceDCmd>(full_export, true, false));
99 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<EventLogDCmd>(full_export, true, false));
100 #if INCLUDE_JVMTI // Both JVMTI and SERVICES have to be enabled to have this dcmd
101 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIAgentLoadDCmd>(full_export, true, false));
102 #endif // INCLUDE_JVMTI
103 #endif // INCLUDE_SERVICES
104 #if INCLUDE_JVMTI
105 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIDataDumpDCmd>(full_export, true, false));
106 #endif // INCLUDE_JVMTI
107 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false));
108 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false));
109 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderHierarchyDCmd>(full_export, true, false));
110 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false));
111 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false));
112 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false));
113 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<TouchedMethodsDCmd>(full_export, true, false));
114 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeHeapAnalyticsDCmd>(full_export, true, false));
115
116 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesPrintDCmd>(full_export, true, false));
117 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesAddDCmd>(full_export, true, false));
118 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesRemoveDCmd>(full_export, true, false));
119 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesClearDCmd>(full_export, true, false));
120
121 // Enhanced JMX Agent Support
122 // These commands won't be exported via the DiagnosticCommandMBean until an
123 // appropriate permission is created for them
124 uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI;
125 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false));
126 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false));
127 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false));
128 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStatusDCmd>(jmx_agent_export_flags, true,false));
129 // Debug on cmd (only makes sense with JVMTI since the agentlib needs it).
130 #if INCLUDE_JVMTI
131 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<DebugOnCmdStartDCmd>(full_export, true, false));
132 #endif // INCLUDE_JVMTI
133
134 }
135
136 #ifndef HAVE_EXTRA_DCMD
137 void DCmdRegistrant::register_dcmds_ext(){
138 // Do nothing here
139 }
140 #endif
141
142
143 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
144 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
145 _cmd("command name", "The name of the command for which we want help",
146 "STRING", false) {
147 _dcmdparser.add_dcmd_option(&_all);
148 _dcmdparser.add_dcmd_argument(&_cmd);
149 };
150
151
152 static int compare_strings(const char** s1, const char** s2) {
153 return ::strcmp(*s1, *s2);
154 }
155
156 void HelpDCmd::execute(DCmdSource source, TRAPS) {
157 if (_all.value()) {
158 GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list(source);
159 cmd_list->sort(compare_strings);
160 for (int i = 0; i < cmd_list->length(); i++) {
161 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
162 strlen(cmd_list->at(i)));
163 output()->print_cr("%s%s", factory->name(),
164 factory->is_enabled() ? "" : " [disabled]");
165 output()->print_cr("\t%s", factory->description());
166 output()->cr();
167 factory = factory->next();
168 }
169 } else if (_cmd.has_value()) {
170 DCmd* cmd = NULL;
171 DCmdFactory* factory = DCmdFactory::factory(source, _cmd.value(),
172 strlen(_cmd.value()));
173 if (factory != NULL) {
174 output()->print_cr("%s%s", factory->name(),
175 factory->is_enabled() ? "" : " [disabled]");
176 output()->print_cr("%s", factory->description());
177 output()->print_cr("\nImpact: %s", factory->impact());
178 JavaPermission p = factory->permission();
179 if(p._class != NULL) {
180 if(p._action != NULL) {
181 output()->print_cr("\nPermission: %s(%s, %s)",
182 p._class, p._name == NULL ? "null" : p._name, p._action);
183 } else {
184 output()->print_cr("\nPermission: %s(%s)",
185 p._class, p._name == NULL ? "null" : p._name);
186 }
187 }
188 output()->cr();
189 cmd = factory->create_resource_instance(output());
190 if (cmd != NULL) {
191 DCmdMark mark(cmd);
192 cmd->print_help(factory->name());
193 }
194 } else {
195 output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value());
196 }
197 } else {
198 output()->print_cr("The following commands are available:");
199 GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(source);
200 cmd_list->sort(compare_strings);
201 for (int i = 0; i < cmd_list->length(); i++) {
202 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
203 strlen(cmd_list->at(i)));
204 output()->print_cr("%s%s", factory->name(),
205 factory->is_enabled() ? "" : " [disabled]");
206 factory = factory->_next;
207 }
208 output()->print_cr("\nFor more information about a specific command use 'help <command>'.");
209 }
210 }
211
212 int HelpDCmd::num_arguments() {
213 ResourceMark rm;
214 HelpDCmd* dcmd = new HelpDCmd(NULL, false);
215 if (dcmd != NULL) {
216 DCmdMark mark(dcmd);
217 return dcmd->_dcmdparser.num_arguments();
218 } else {
219 return 0;
220 }
221 }
222
223 void VersionDCmd::execute(DCmdSource source, TRAPS) {
224 output()->print_cr("%s version %s", VM_Version::vm_name(),
225 VM_Version::vm_release());
226 JDK_Version jdk_version = JDK_Version::current();
227 if (jdk_version.patch_version() > 0) {
228 output()->print_cr("JDK %d.%d.%d.%d", jdk_version.major_version(),
229 jdk_version.minor_version(), jdk_version.security_version(),
230 jdk_version.patch_version());
231 } else {
232 output()->print_cr("JDK %d.%d.%d", jdk_version.major_version(),
233 jdk_version.minor_version(), jdk_version.security_version());
234 }
235 }
236
237 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) :
238 DCmdWithParser(output, heap),
239 _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") {
240 _dcmdparser.add_dcmd_option(&_all);
241 }
242
243 void PrintVMFlagsDCmd::execute(DCmdSource source, TRAPS) {
244 if (_all.value()) {
245 JVMFlag::printFlags(output(), true);
246 } else {
247 JVMFlag::printSetFlags(output());
248 }
249 }
250
251 int PrintVMFlagsDCmd::num_arguments() {
252 ResourceMark rm;
253 PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false);
254 if (dcmd != NULL) {
255 DCmdMark mark(dcmd);
256 return dcmd->_dcmdparser.num_arguments();
257 } else {
258 return 0;
259 }
260 }
261
262 SetVMFlagDCmd::SetVMFlagDCmd(outputStream* output, bool heap) :
263 DCmdWithParser(output, heap),
264 _flag("flag name", "The name of the flag we want to set",
265 "STRING", true),
266 _value("string value", "The value we want to set", "STRING", false) {
267 _dcmdparser.add_dcmd_argument(&_flag);
268 _dcmdparser.add_dcmd_argument(&_value);
269 }
270
271 void SetVMFlagDCmd::execute(DCmdSource source, TRAPS) {
272 const char* val = NULL;
273 if (_value.value() != NULL) {
274 val = _value.value();
275 }
276
277 FormatBuffer<80> err_msg("%s", "");
278 int ret = WriteableFlags::set_flag(_flag.value(), val, JVMFlag::MANAGEMENT, err_msg);
279
280 if (ret != JVMFlag::SUCCESS) {
281 output()->print_cr("%s", err_msg.buffer());
282 }
283 }
284
285 int SetVMFlagDCmd::num_arguments() {
286 ResourceMark rm;
287 SetVMFlagDCmd* dcmd = new SetVMFlagDCmd(NULL, false);
288 if (dcmd != NULL) {
289 DCmdMark mark(dcmd);
290 return dcmd->_dcmdparser.num_arguments();
291 } else {
292 return 0;
293 }
294 }
295
296 void JVMTIDataDumpDCmd::execute(DCmdSource source, TRAPS) {
297 if (JvmtiExport::should_post_data_dump()) {
298 JvmtiExport::post_data_dump();
299 }
300 }
301
302 #if INCLUDE_SERVICES
303 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) :
304 DCmdWithParser(output, heap),
305 _libpath("library path", "Absolute path of the JVMTI agent to load.",
306 "STRING", true),
307 _option("agent option", "Option string to pass the agent.", "STRING", false) {
308 _dcmdparser.add_dcmd_argument(&_libpath);
309 _dcmdparser.add_dcmd_argument(&_option);
310 }
311
312 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) {
313
314 if (_libpath.value() == NULL) {
315 output()->print_cr("JVMTI.agent_load dcmd needs library path.");
316 return;
317 }
318
319 char *suffix = strrchr(_libpath.value(), '.');
320 bool is_java_agent = (suffix != NULL) && (strncmp(".jar", suffix, 4) == 0);
321
322 if (is_java_agent) {
323 if (_option.value() == NULL) {
324 JvmtiExport::load_agent_library("instrument", "false",
325 _libpath.value(), output());
326 } else {
327 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2;
328 if (opt_len > 4096) {
329 output()->print_cr("JVMTI agent attach failed: Options is too long.");
330 return;
331 }
332
333 char *opt = (char *)os::malloc(opt_len, mtInternal);
334 if (opt == NULL) {
335 output()->print_cr("JVMTI agent attach failed: "
336 "Could not allocate " SIZE_FORMAT " bytes for argument.",
337 opt_len);
338 return;
339 }
340
341 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value());
342 JvmtiExport::load_agent_library("instrument", "false", opt, output());
343
344 os::free(opt);
345 }
346 } else {
347 JvmtiExport::load_agent_library(_libpath.value(), "true",
348 _option.value(), output());
349 }
350 }
351
352 int JVMTIAgentLoadDCmd::num_arguments() {
353 ResourceMark rm;
354 JVMTIAgentLoadDCmd* dcmd = new JVMTIAgentLoadDCmd(NULL, false);
355 if (dcmd != NULL) {
356 DCmdMark mark(dcmd);
357 return dcmd->_dcmdparser.num_arguments();
358 } else {
359 return 0;
360 }
361 }
362 #endif // INCLUDE_SERVICES
363
364 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) {
365 // load VMSupport
366 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
367 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
368 InstanceKlass* ik = InstanceKlass::cast(k);
369 if (ik->should_be_initialized()) {
370 ik->initialize(THREAD);
371 }
372 if (HAS_PENDING_EXCEPTION) {
373 java_lang_Throwable::print(PENDING_EXCEPTION, output());
374 output()->cr();
375 CLEAR_PENDING_EXCEPTION;
376 return;
377 }
378
379 // invoke the serializePropertiesToByteArray method
380 JavaValue result(T_OBJECT);
381 JavaCallArguments args;
382
383 Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature();
384 JavaCalls::call_static(&result,
385 ik,
386 vmSymbols::serializePropertiesToByteArray_name(),
387 signature,
388 &args,
389 THREAD);
390 if (HAS_PENDING_EXCEPTION) {
391 java_lang_Throwable::print(PENDING_EXCEPTION, output());
392 output()->cr();
393 CLEAR_PENDING_EXCEPTION;
394 return;
395 }
396
397 // The result should be a [B
398 oop res = (oop)result.get_jobject();
399 assert(res->is_typeArray(), "just checking");
400 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking");
401
402 // copy the bytes to the output stream
403 typeArrayOop ba = typeArrayOop(res);
404 jbyte* addr = typeArrayOop(res)->byte_at_addr(0);
405 output()->print_raw((const char*)addr, ba->length());
406 }
407
408 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) :
409 DCmdWithParser(output, heap),
410 _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") {
411 _dcmdparser.add_dcmd_option(&_date);
412 }
413
414 void VMUptimeDCmd::execute(DCmdSource source, TRAPS) {
415 if (_date.value()) {
416 output()->date_stamp(true, "", ": ");
417 }
418 output()->time_stamp().update_to(tty->time_stamp().ticks());
419 output()->stamp();
420 output()->print_cr(" s");
421 }
422
423 int VMUptimeDCmd::num_arguments() {
424 ResourceMark rm;
425 VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false);
426 if (dcmd != NULL) {
427 DCmdMark mark(dcmd);
428 return dcmd->_dcmdparser.num_arguments();
429 } else {
430 return 0;
431 }
432 }
433
434 void VMInfoDCmd::execute(DCmdSource source, TRAPS) {
435 VMError::print_vm_info(_output);
436 }
437
438 void SystemGCDCmd::execute(DCmdSource source, TRAPS) {
439 Universe::heap()->collect(GCCause::_dcmd_gc_run);
440 }
441
442 void RunFinalizationDCmd::execute(DCmdSource source, TRAPS) {
443 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
444 true, CHECK);
445 JavaValue result(T_VOID);
446 JavaCalls::call_static(&result, k,
447 vmSymbols::run_finalization_name(),
448 vmSymbols::void_method_signature(), CHECK);
449 }
450
451 void HeapInfoDCmd::execute(DCmdSource source, TRAPS) {
452 MutexLocker hl(Heap_lock);
453 Universe::heap()->print_on(output());
454 }
455
456 void FinalizerInfoDCmd::execute(DCmdSource source, TRAPS) {
457 ResourceMark rm;
458
459 Klass* k = SystemDictionary::resolve_or_fail(
460 vmSymbols::finalizer_histogram_klass(), true, CHECK);
461
462 JavaValue result(T_ARRAY);
463
464 // We are calling lang.ref.FinalizerHistogram.getFinalizerHistogram() method
465 // and expect it to return array of FinalizerHistogramEntry as Object[]
466
467 JavaCalls::call_static(&result, k,
468 vmSymbols::get_finalizer_histogram_name(),
469 vmSymbols::void_finalizer_histogram_entry_array_signature(), CHECK);
470
471 objArrayOop result_oop = (objArrayOop) result.get_jobject();
472 if (result_oop->length() == 0) {
473 output()->print_cr("No instances waiting for finalization found");
474 return;
475 }
476
477 oop foop = result_oop->obj_at(0);
478 InstanceKlass* ik = InstanceKlass::cast(foop->klass());
479
480 fieldDescriptor count_fd, name_fd;
481
482 Klass* count_res = ik->find_field(
483 vmSymbols::finalizer_histogram_entry_count_field(), vmSymbols::int_signature(), &count_fd);
484
485 Klass* name_res = ik->find_field(
486 vmSymbols::finalizer_histogram_entry_name_field(), vmSymbols::string_signature(), &name_fd);
487
488 assert(count_res != NULL && name_res != NULL, "Unexpected layout of FinalizerHistogramEntry");
489
490 output()->print_cr("Unreachable instances waiting for finalization");
491 output()->print_cr("#instances class name");
492 output()->print_cr("-----------------------");
493
494 for (int i = 0; i < result_oop->length(); ++i) {
495 oop element_oop = result_oop->obj_at(i);
496 oop str_oop = element_oop->obj_field(name_fd.offset());
497 char *name = java_lang_String::as_utf8_string(str_oop);
498 int count = element_oop->int_field(count_fd.offset());
499 output()->print_cr("%10d %s", count, name);
500 }
501 }
502
503 #if INCLUDE_SERVICES // Heap dumping/inspection supported
504 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
505 DCmdWithParser(output, heap),
506 _filename("filename","Name of the dump file", "STRING",true),
507 _all("-all", "Dump all objects, including unreachable objects",
508 "BOOLEAN", false, "false") {
509 _dcmdparser.add_dcmd_option(&_all);
510 _dcmdparser.add_dcmd_argument(&_filename);
511 }
512
513 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) {
514 // Request a full GC before heap dump if _all is false
515 // This helps reduces the amount of unreachable objects in the dump
516 // and makes it easier to browse.
517 HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
518 int res = dumper.dump(_filename.value());
519 if (res == 0) {
520 output()->print_cr("Heap dump file created");
521 } else {
522 // heap dump failed
523 ResourceMark rm;
524 char* error = dumper.error_as_C_string();
525 if (error == NULL) {
526 output()->print_cr("Dump failed - reason unknown");
527 } else {
528 output()->print_cr("%s", error);
529 }
530 }
531 }
532
533 int HeapDumpDCmd::num_arguments() {
534 ResourceMark rm;
535 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
536 if (dcmd != NULL) {
537 DCmdMark mark(dcmd);
538 return dcmd->_dcmdparser.num_arguments();
539 } else {
540 return 0;
541 }
542 }
543
544 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
545 DCmdWithParser(output, heap),
546 _all("-all", "Inspect all objects, including unreachable objects",
547 "BOOLEAN", false, "false") {
548 _dcmdparser.add_dcmd_option(&_all);
549 }
550
551 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) {
552 VM_GC_HeapInspection heapop(output(),
553 !_all.value() /* request full gc if false */);
554 VMThread::execute(&heapop);
555 }
556
557 int ClassHistogramDCmd::num_arguments() {
558 ResourceMark rm;
559 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
560 if (dcmd != NULL) {
561 DCmdMark mark(dcmd);
562 return dcmd->_dcmdparser.num_arguments();
563 } else {
564 return 0;
565 }
566 }
567
568 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total"
569 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) :
570 DCmdWithParser(output, heap),
571 _all("-all", "Show all columns",
572 "BOOLEAN", false, "false"),
573 _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets",
574 "BOOLEAN", false, "false"),
575 _help("-help", "Show meaning of all the columns",
576 "BOOLEAN", false, "false"),
577 _columns("columns", "Comma-separated list of all the columns to show. "
578 "If not specified, the following columns are shown: " DEFAULT_COLUMNS,
579 "STRING", false) {
580 _dcmdparser.add_dcmd_option(&_all);
581 _dcmdparser.add_dcmd_option(&_csv);
582 _dcmdparser.add_dcmd_option(&_help);
583 _dcmdparser.add_dcmd_argument(&_columns);
584 }
585
586 void ClassStatsDCmd::execute(DCmdSource source, TRAPS) {
587 VM_GC_HeapInspection heapop(output(),
588 true /* request_full_gc */);
589 heapop.set_csv_format(_csv.value());
590 heapop.set_print_help(_help.value());
591 heapop.set_print_class_stats(true);
592 if (_all.value()) {
593 if (_columns.has_value()) {
594 output()->print_cr("Cannot specify -all and individual columns at the same time");
595 return;
596 } else {
597 heapop.set_columns(NULL);
598 }
599 } else {
600 if (_columns.has_value()) {
601 heapop.set_columns(_columns.value());
602 } else {
603 heapop.set_columns(DEFAULT_COLUMNS);
604 }
605 }
606 VMThread::execute(&heapop);
607 }
608
609 int ClassStatsDCmd::num_arguments() {
610 ResourceMark rm;
611 ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false);
612 if (dcmd != NULL) {
613 DCmdMark mark(dcmd);
614 return dcmd->_dcmdparser.num_arguments();
615 } else {
616 return 0;
617 }
618 }
619 #endif // INCLUDE_SERVICES
620
621 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
622 DCmdWithParser(output, heap),
623 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false"),
624 _extended("-e", "print extended thread information", "BOOLEAN", false, "false") {
625 _dcmdparser.add_dcmd_option(&_locks);
626 _dcmdparser.add_dcmd_option(&_extended);
627 }
628
629 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) {
630 // thread stacks
631 VM_PrintThreads op1(output(), _locks.value(), _extended.value());
632 VMThread::execute(&op1);
633
634 // JNI global handles
635 VM_PrintJNI op2(output());
636 VMThread::execute(&op2);
637
638 // Deadlock detection
639 VM_FindDeadlocks op3(output());
640 VMThread::execute(&op3);
641 }
642
643 int ThreadDumpDCmd::num_arguments() {
644 ResourceMark rm;
645 ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false);
646 if (dcmd != NULL) {
647 DCmdMark mark(dcmd);
648 return dcmd->_dcmdparser.num_arguments();
649 } else {
650 return 0;
651 }
652 }
653
654 // Enhanced JMX Agent support
655
656 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) :
657
658 DCmdWithParser(output, heap_allocated),
659
660 _config_file
661 ("config.file",
662 "set com.sun.management.config.file", "STRING", false),
663
664 _jmxremote_host
665 ("jmxremote.host",
666 "set com.sun.management.jmxremote.host", "STRING", false),
667
668 _jmxremote_port
669 ("jmxremote.port",
670 "set com.sun.management.jmxremote.port", "STRING", false),
671
672 _jmxremote_rmi_port
673 ("jmxremote.rmi.port",
674 "set com.sun.management.jmxremote.rmi.port", "STRING", false),
675
676 _jmxremote_ssl
677 ("jmxremote.ssl",
678 "set com.sun.management.jmxremote.ssl", "STRING", false),
679
680 _jmxremote_registry_ssl
681 ("jmxremote.registry.ssl",
682 "set com.sun.management.jmxremote.registry.ssl", "STRING", false),
683
684 _jmxremote_authenticate
685 ("jmxremote.authenticate",
686 "set com.sun.management.jmxremote.authenticate", "STRING", false),
687
688 _jmxremote_password_file
689 ("jmxremote.password.file",
690 "set com.sun.management.jmxremote.password.file", "STRING", false),
691
692 _jmxremote_access_file
693 ("jmxremote.access.file",
694 "set com.sun.management.jmxremote.access.file", "STRING", false),
695
696 _jmxremote_login_config
697 ("jmxremote.login.config",
698 "set com.sun.management.jmxremote.login.config", "STRING", false),
699
700 _jmxremote_ssl_enabled_cipher_suites
701 ("jmxremote.ssl.enabled.cipher.suites",
702 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false),
703
704 _jmxremote_ssl_enabled_protocols
705 ("jmxremote.ssl.enabled.protocols",
706 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false),
707
708 _jmxremote_ssl_need_client_auth
709 ("jmxremote.ssl.need.client.auth",
710 "set com.sun.management.jmxremote.need.client.auth", "STRING", false),
711
712 _jmxremote_ssl_config_file
713 ("jmxremote.ssl.config.file",
714 "set com.sun.management.jmxremote.ssl_config_file", "STRING", false),
715
716 // JDP Protocol support
717 _jmxremote_autodiscovery
718 ("jmxremote.autodiscovery",
719 "set com.sun.management.jmxremote.autodiscovery", "STRING", false),
720
721 _jdp_port
722 ("jdp.port",
723 "set com.sun.management.jdp.port", "INT", false),
724
725 _jdp_address
726 ("jdp.address",
727 "set com.sun.management.jdp.address", "STRING", false),
728
729 _jdp_source_addr
730 ("jdp.source_addr",
731 "set com.sun.management.jdp.source_addr", "STRING", false),
732
733 _jdp_ttl
734 ("jdp.ttl",
735 "set com.sun.management.jdp.ttl", "INT", false),
736
737 _jdp_pause
738 ("jdp.pause",
739 "set com.sun.management.jdp.pause", "INT", false),
740
741 _jdp_name
742 ("jdp.name",
743 "set com.sun.management.jdp.name", "STRING", false)
744
745 {
746 _dcmdparser.add_dcmd_option(&_config_file);
747 _dcmdparser.add_dcmd_option(&_jmxremote_host);
748 _dcmdparser.add_dcmd_option(&_jmxremote_port);
749 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port);
750 _dcmdparser.add_dcmd_option(&_jmxremote_ssl);
751 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl);
752 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate);
753 _dcmdparser.add_dcmd_option(&_jmxremote_password_file);
754 _dcmdparser.add_dcmd_option(&_jmxremote_access_file);
755 _dcmdparser.add_dcmd_option(&_jmxremote_login_config);
756 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites);
757 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols);
758 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth);
759 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file);
760 _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery);
761 _dcmdparser.add_dcmd_option(&_jdp_port);
762 _dcmdparser.add_dcmd_option(&_jdp_address);
763 _dcmdparser.add_dcmd_option(&_jdp_source_addr);
764 _dcmdparser.add_dcmd_option(&_jdp_ttl);
765 _dcmdparser.add_dcmd_option(&_jdp_pause);
766 _dcmdparser.add_dcmd_option(&_jdp_name);
767 }
768
769
770 int JMXStartRemoteDCmd::num_arguments() {
771 ResourceMark rm;
772 JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false);
773 if (dcmd != NULL) {
774 DCmdMark mark(dcmd);
775 return dcmd->_dcmdparser.num_arguments();
776 } else {
777 return 0;
778 }
779 }
780
781
782 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) {
783 ResourceMark rm(THREAD);
784 HandleMark hm(THREAD);
785
786 // Load and initialize the jdk.internal.agent.Agent class
787 // invoke startRemoteManagementAgent(string) method to start
788 // the remote management server.
789 // throw java.lang.NoSuchMethodError if the method doesn't exist
790
791 loadAgentModule(CHECK);
792 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
793 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
794
795 JavaValue result(T_VOID);
796
797 // Pass all command line arguments to java as key=value,...
798 // All checks are done on java side
799
800 int len = 0;
801 stringStream options;
802 char comma[2] = {0,0};
803
804 // Leave default values on Agent.class side and pass only
805 // agruments explicitly set by user. All arguments passed
806 // to jcmd override properties with the same name set by
807 // command line with -D or by managmenent.properties
808 // file.
809 #define PUT_OPTION(a) \
810 do { \
811 if ( (a).is_set() ){ \
812 if ( *((a).type()) == 'I' ) { \
813 options.print("%scom.sun.management.%s=" JLONG_FORMAT, comma, (a).name(), (jlong)((a).value())); \
814 } else { \
815 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (char*)((a).value())); \
816 } \
817 comma[0] = ','; \
818 }\
819 } while(0);
820
821
822 PUT_OPTION(_config_file);
823 PUT_OPTION(_jmxremote_host);
824 PUT_OPTION(_jmxremote_port);
825 PUT_OPTION(_jmxremote_rmi_port);
826 PUT_OPTION(_jmxremote_ssl);
827 PUT_OPTION(_jmxremote_registry_ssl);
828 PUT_OPTION(_jmxremote_authenticate);
829 PUT_OPTION(_jmxremote_password_file);
830 PUT_OPTION(_jmxremote_access_file);
831 PUT_OPTION(_jmxremote_login_config);
832 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites);
833 PUT_OPTION(_jmxremote_ssl_enabled_protocols);
834 PUT_OPTION(_jmxremote_ssl_need_client_auth);
835 PUT_OPTION(_jmxremote_ssl_config_file);
836 PUT_OPTION(_jmxremote_autodiscovery);
837 PUT_OPTION(_jdp_port);
838 PUT_OPTION(_jdp_address);
839 PUT_OPTION(_jdp_source_addr);
840 PUT_OPTION(_jdp_ttl);
841 PUT_OPTION(_jdp_pause);
842 PUT_OPTION(_jdp_name);
843
844 #undef PUT_OPTION
845
846 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK);
847 JavaCalls::call_static(&result, k, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK);
848 }
849
850 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) :
851 DCmd(output, heap_allocated) {
852 // do nothing
853 }
854
855 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) {
856 ResourceMark rm(THREAD);
857 HandleMark hm(THREAD);
858
859 // Load and initialize the jdk.internal.agent.Agent class
860 // invoke startLocalManagementAgent(void) method to start
861 // the local management server
862 // throw java.lang.NoSuchMethodError if method doesn't exist
863
864 loadAgentModule(CHECK);
865 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
866 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
867
868 JavaValue result(T_VOID);
869 JavaCalls::call_static(&result, k, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK);
870 }
871
872 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) {
873 ResourceMark rm(THREAD);
874 HandleMark hm(THREAD);
875
876 // Load and initialize the jdk.internal.agent.Agent class
877 // invoke stopRemoteManagementAgent method to stop the
878 // management server
879 // throw java.lang.NoSuchMethodError if method doesn't exist
880
881 loadAgentModule(CHECK);
882 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
883 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
884
885 JavaValue result(T_VOID);
886 JavaCalls::call_static(&result, k, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK);
887 }
888
889 JMXStatusDCmd::JMXStatusDCmd(outputStream *output, bool heap_allocated) :
890 DCmd(output, heap_allocated) {
891 // do nothing
892 }
893
894 void JMXStatusDCmd::execute(DCmdSource source, TRAPS) {
895 ResourceMark rm(THREAD);
896 HandleMark hm(THREAD);
897
898 // Load and initialize the jdk.internal.agent.Agent class
899 // invoke getManagementAgentStatus() method to generate the status info
900 // throw java.lang.NoSuchMethodError if method doesn't exist
901
902 loadAgentModule(CHECK);
903 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
904 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
905
906 JavaValue result(T_OBJECT);
907 JavaCalls::call_static(&result, k, vmSymbols::getAgentStatus_name(), vmSymbols::void_string_signature(), CHECK);
908
909 jvalue* jv = (jvalue*) result.get_value_addr();
910 oop str = (oop) jv->l;
911 if (str != NULL) {
912 char* out = java_lang_String::as_utf8_string(str);
913 if (out) {
914 output()->print_cr("%s", out);
915 return;
916 }
917 }
918 output()->print_cr("Error obtaining management agent status");
919 }
920
921 VMDynamicLibrariesDCmd::VMDynamicLibrariesDCmd(outputStream *output, bool heap_allocated) :
922 DCmd(output, heap_allocated) {
923 // do nothing
924 }
925
926 void VMDynamicLibrariesDCmd::execute(DCmdSource source, TRAPS) {
927 os::print_dll_info(output());
928 output()->cr();
929 }
930
931 void CompileQueueDCmd::execute(DCmdSource source, TRAPS) {
932 VM_PrintCompileQueue printCompileQueueOp(output());
933 VMThread::execute(&printCompileQueueOp);
934 }
935
936 void CodeListDCmd::execute(DCmdSource source, TRAPS) {
937 CodeCache::print_codelist(output());
938 }
939
940 void CodeCacheDCmd::execute(DCmdSource source, TRAPS) {
941 CodeCache::print_layout(output());
942 }
943
944 //---< BEGIN >--- CodeHeap State Analytics.
945 CodeHeapAnalyticsDCmd::CodeHeapAnalyticsDCmd(outputStream* output, bool heap) :
946 DCmdWithParser(output, heap),
947 _function("function", "Function to be performed (aggregate, UsedSpace, FreeSpace, MethodCount, MethodSpace, MethodAge, MethodNames, discard", "STRING", false, "all"),
948 _granularity("granularity", "Detail level - smaller value -> more detail", "INT", false, "4096") {
949 _dcmdparser.add_dcmd_argument(&_function);
950 _dcmdparser.add_dcmd_argument(&_granularity);
951 }
952
953 void CodeHeapAnalyticsDCmd::execute(DCmdSource source, TRAPS) {
954 jlong granularity = _granularity.value();
955 if (granularity < 1) {
956 Exceptions::fthrow(THREAD_AND_LOCATION, vmSymbols::java_lang_IllegalArgumentException(),
957 "Invalid granularity value " JLONG_FORMAT ". Should be positive.\n", granularity);
958 return;
959 }
960
961 CompileBroker::print_heapinfo(output(), _function.value(), granularity);
962 }
963
964 int CodeHeapAnalyticsDCmd::num_arguments() {
965 ResourceMark rm;
966 CodeHeapAnalyticsDCmd* dcmd = new CodeHeapAnalyticsDCmd(NULL, false);
967 if (dcmd != NULL) {
968 DCmdMark mark(dcmd);
969 return dcmd->_dcmdparser.num_arguments();
970 } else {
971 return 0;
972 }
973 }
974 //---< END >--- CodeHeap State Analytics.
975
976 EventLogDCmd::EventLogDCmd(outputStream* output, bool heap) :
977 DCmdWithParser(output, heap),
978 _log("log", "Name of log to be printed. If omitted, all logs are printed.", "STRING", false, NULL),
979 _max("max", "Maximum number of events to be printed (newest first). If omitted, all events are printed.", "STRING", false, NULL)
980 {
981 _dcmdparser.add_dcmd_option(&_log);
982 _dcmdparser.add_dcmd_option(&_max);
983 }
984
985 void EventLogDCmd::execute(DCmdSource source, TRAPS) {
986 const char* max_value = _max.value();
987 long max = -1;
988 if (max_value != NULL) {
989 char* endptr = NULL;
990 max = ::strtol(max_value, &endptr, 10);
991 if (max == 0 && max_value == endptr) {
992 output()->print_cr("Invalid max option: \"%s\".", max_value);
993 return;
994 }
995 }
996 const char* log_name = _log.value();
997 if (log_name != NULL) {
998 Events::print_one(output(), log_name, max);
999 } else {
1000 Events::print_all(output(), max);
1001 }
1002 }
1003
1004 int EventLogDCmd::num_arguments() {
1005 ResourceMark rm;
1006 EventLogDCmd* dcmd = new EventLogDCmd(NULL, false);
1007 if (dcmd != NULL) {
1008 DCmdMark mark(dcmd);
1009 return dcmd->_dcmdparser.num_arguments();
1010 } else {
1011 return 0;
1012 }
1013 }
1014
1015 void CompilerDirectivesPrintDCmd::execute(DCmdSource source, TRAPS) {
1016 DirectivesStack::print(output());
1017 }
1018
1019 CompilerDirectivesAddDCmd::CompilerDirectivesAddDCmd(outputStream* output, bool heap) :
1020 DCmdWithParser(output, heap),
1021 _filename("filename","Name of the directives file", "STRING",true) {
1022 _dcmdparser.add_dcmd_argument(&_filename);
1023 }
1024
1025 void CompilerDirectivesAddDCmd::execute(DCmdSource source, TRAPS) {
1026 DirectivesParser::parse_from_file(_filename.value(), output());
1027 }
1028
1029 int CompilerDirectivesAddDCmd::num_arguments() {
1030 ResourceMark rm;
1031 CompilerDirectivesAddDCmd* dcmd = new CompilerDirectivesAddDCmd(NULL, false);
1032 if (dcmd != NULL) {
1033 DCmdMark mark(dcmd);
1034 return dcmd->_dcmdparser.num_arguments();
1035 } else {
1036 return 0;
1037 }
1038 }
1039
1040 void CompilerDirectivesRemoveDCmd::execute(DCmdSource source, TRAPS) {
1041 DirectivesStack::pop(1);
1042 }
1043
1044 void CompilerDirectivesClearDCmd::execute(DCmdSource source, TRAPS) {
1045 DirectivesStack::clear();
1046 }
1047 #if INCLUDE_SERVICES
1048 ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) :
1049 DCmdWithParser(output, heap),
1050 _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"),
1051 _print_subclasses("-s", "If a classname is specified, print its subclasses. "
1052 "Otherwise only its superclasses are printed.", "BOOLEAN", false, "false"),
1053 _classname("classname", "Name of class whose hierarchy should be printed. "
1054 "If not specified, all class hierarchies are printed.",
1055 "STRING", false) {
1056 _dcmdparser.add_dcmd_option(&_print_interfaces);
1057 _dcmdparser.add_dcmd_option(&_print_subclasses);
1058 _dcmdparser.add_dcmd_argument(&_classname);
1059 }
1060
1061 void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) {
1062 VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(),
1063 _print_subclasses.value(), _classname.value());
1064 VMThread::execute(&printClassHierarchyOp);
1065 }
1066
1067 int ClassHierarchyDCmd::num_arguments() {
1068 ResourceMark rm;
1069 ClassHierarchyDCmd* dcmd = new ClassHierarchyDCmd(NULL, false);
1070 if (dcmd != NULL) {
1071 DCmdMark mark(dcmd);
1072 return dcmd->_dcmdparser.num_arguments();
1073 } else {
1074 return 0;
1075 }
1076 }
1077
1078 #endif
1079
1080 class VM_DumpTouchedMethods : public VM_Operation {
1081 private:
1082 outputStream* _out;
1083 public:
1084 VM_DumpTouchedMethods(outputStream* out) {
1085 _out = out;
1086 }
1087
1088 virtual VMOp_Type type() const { return VMOp_DumpTouchedMethods; }
1089
1090 virtual void doit() {
1091 Method::print_touched_methods(_out);
1092 }
1093 };
1094
1095 TouchedMethodsDCmd::TouchedMethodsDCmd(outputStream* output, bool heap) :
1096 DCmdWithParser(output, heap)
1097 {}
1098
1099 void TouchedMethodsDCmd::execute(DCmdSource source, TRAPS) {
1100 if (!LogTouchedMethods) {
1101 output()->print_cr("VM.print_touched_methods command requires -XX:+LogTouchedMethods");
1102 return;
1103 }
1104 VM_DumpTouchedMethods dumper(output());
1105 VMThread::execute(&dumper);
1106 }
1107
1108 int TouchedMethodsDCmd::num_arguments() {
1109 return 0;
1110 }
1111
1112 #if INCLUDE_JVMTI
1113 extern "C" typedef char const* (JNICALL *debugInit_startDebuggingViaCommandPtr)(JNIEnv* env, jthread thread, char const** transport_name,
1114 char const** address, jboolean* first_start);
1115 static debugInit_startDebuggingViaCommandPtr dvc_start_ptr = NULL;
1116
1117 DebugOnCmdStartDCmd::DebugOnCmdStartDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap) {
1118 }
1119
1120 void DebugOnCmdStartDCmd::execute(DCmdSource source, TRAPS) {
1121 char const* transport = NULL;
1122 char const* addr = NULL;
1123 jboolean is_first_start = JNI_FALSE;
1124 JavaThread* thread = (JavaThread*) THREAD;
1125 jthread jt = JNIHandles::make_local(thread->threadObj());
1126 ThreadToNativeFromVM ttn(thread);
1127 const char *error = "Could not find jdwp agent.";
1128
1129 if (!dvc_start_ptr) {
1130 for (AgentLibrary* agent = Arguments::agents(); agent != NULL; agent = agent->next()) {
1131 if ((strcmp("jdwp", agent->name()) == 0) && (dvc_start_ptr == NULL)) {
1132 char const* func = "debugInit_startDebuggingViaCommand";
1133 dvc_start_ptr = (debugInit_startDebuggingViaCommandPtr) os::find_agent_function(agent, false, &func, 1);
1134 }
1135 }
1136 }
1137
1138 if (dvc_start_ptr) {
1139 error = dvc_start_ptr(thread->jni_environment(), jt, &transport, &addr, &is_first_start);
1140 }
1141
1142 if (error != NULL) {
1143 output()->print_cr("Debugging has not been started: %s", error);
1144 } else {
1145 output()->print_cr(is_first_start ? "Debugging has been started." : "Debugging is already active.");
1146 output()->print_cr("Transport : %s", transport ? transport : "#unknown");
1147 output()->print_cr("Address : %s", addr ? addr : "#unknown");
1148 }
1149 }
1150 #endif // INCLUDE_JVMTI