1 /*
2 * Copyright (c) 2011, 2020, 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<SystemDictionaryDCmd>(full_export, true, false));
94 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHierarchyDCmd>(full_export, true, false));
95 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SymboltableDCmd>(full_export, true, false));
96 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<StringtableDCmd>(full_export, true, false));
97 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<metaspace::MetaspaceDCmd>(full_export, true, false));
98 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<EventLogDCmd>(full_export, true, false));
99 #if INCLUDE_JVMTI // Both JVMTI and SERVICES have to be enabled to have this dcmd
100 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIAgentLoadDCmd>(full_export, true, false));
101 #endif // INCLUDE_JVMTI
102 #endif // INCLUDE_SERVICES
103 #if INCLUDE_JVMTI
104 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIDataDumpDCmd>(full_export, true, false));
105 #endif // INCLUDE_JVMTI
106 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false));
107 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false));
108 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderHierarchyDCmd>(full_export, true, false));
109 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false));
110 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false));
111 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false));
112 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<TouchedMethodsDCmd>(full_export, true, false));
113 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeHeapAnalyticsDCmd>(full_export, true, false));
114
115 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesPrintDCmd>(full_export, true, false));
116 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesAddDCmd>(full_export, true, false));
117 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesRemoveDCmd>(full_export, true, false));
118 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesClearDCmd>(full_export, true, false));
119
120 // Enhanced JMX Agent Support
121 // These commands won't be exported via the DiagnosticCommandMBean until an
122 // appropriate permission is created for them
123 uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI;
124 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false));
125 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false));
126 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false));
127 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStatusDCmd>(jmx_agent_export_flags, true,false));
128
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, true));
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(THREAD, Heap_lock);
453 Universe::heap()->print_on(output());
454 }
455
456 void FinalizerInfoDCmd::execute(DCmdSource source, TRAPS) {
457 ResourceMark rm(THREAD);
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 _gzip("-gz", "Write in gzipped format.", "BOOLEAN", false, "false"),
510 _gzip_level("-gz-level", "The compression level from 0 (store) to 9 (best) when writing in gzipped format.",
511 "INT", "FALSE", "1") {
512 _dcmdparser.add_dcmd_option(&_all);
513 _dcmdparser.add_dcmd_argument(&_filename);
514 _dcmdparser.add_dcmd_option(&_gzip);
515 _dcmdparser.add_dcmd_option(&_gzip_level);
516 }
517
518 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) {
519 jlong level = -1; // -1 means no compression.
520
521 if (_gzip.value()) {
522 level = _gzip_level.value();
523
524 if (level < 0 || level > 9) {
525 output()->print_cr("Compression level out of range (0-9): " JLONG_FORMAT, level);
526 return;
527 }
528 }
529
530 // Request a full GC before heap dump if _all is false
531 // This helps reduces the amount of unreachable objects in the dump
532 // and makes it easier to browse.
533 HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
534 dumper.dump(_filename.value(), output(), (int) level);
535 }
536
537 int HeapDumpDCmd::num_arguments() {
538 ResourceMark rm;
539 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
540 if (dcmd != NULL) {
541 DCmdMark mark(dcmd);
542 return dcmd->_dcmdparser.num_arguments();
543 } else {
544 return 0;
545 }
546 }
547
548 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
549 DCmdWithParser(output, heap),
550 _all("-all", "Inspect all objects, including unreachable objects",
551 "BOOLEAN", false, "false") {
552 _dcmdparser.add_dcmd_option(&_all);
553 }
554
555 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) {
556 VM_GC_HeapInspection heapop(output(),
557 !_all.value() /* request full gc if false */);
558 VMThread::execute(&heapop);
559 }
560
561 int ClassHistogramDCmd::num_arguments() {
562 ResourceMark rm;
563 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
564 if (dcmd != NULL) {
565 DCmdMark mark(dcmd);
566 return dcmd->_dcmdparser.num_arguments();
567 } else {
568 return 0;
569 }
570 }
571
572 #endif // INCLUDE_SERVICES
573
574 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
575 DCmdWithParser(output, heap),
576 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false"),
577 _extended("-e", "print extended thread information", "BOOLEAN", false, "false") {
578 _dcmdparser.add_dcmd_option(&_locks);
579 _dcmdparser.add_dcmd_option(&_extended);
580 }
581
582 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) {
583 // thread stacks
584 VM_PrintThreads op1(output(), _locks.value(), _extended.value());
585 VMThread::execute(&op1);
586
587 // JNI global handles
588 VM_PrintJNI op2(output());
589 VMThread::execute(&op2);
590
591 // Deadlock detection
592 VM_FindDeadlocks op3(output());
593 VMThread::execute(&op3);
594 }
595
596 int ThreadDumpDCmd::num_arguments() {
597 ResourceMark rm;
598 ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false);
599 if (dcmd != NULL) {
600 DCmdMark mark(dcmd);
601 return dcmd->_dcmdparser.num_arguments();
602 } else {
603 return 0;
604 }
605 }
606
607 // Enhanced JMX Agent support
608
609 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) :
610
611 DCmdWithParser(output, heap_allocated),
612
613 _config_file
614 ("config.file",
615 "set com.sun.management.config.file", "STRING", false),
616
617 _jmxremote_host
618 ("jmxremote.host",
619 "set com.sun.management.jmxremote.host", "STRING", false),
620
621 _jmxremote_port
622 ("jmxremote.port",
623 "set com.sun.management.jmxremote.port", "STRING", false),
624
625 _jmxremote_rmi_port
626 ("jmxremote.rmi.port",
627 "set com.sun.management.jmxremote.rmi.port", "STRING", false),
628
629 _jmxremote_ssl
630 ("jmxremote.ssl",
631 "set com.sun.management.jmxremote.ssl", "STRING", false),
632
633 _jmxremote_registry_ssl
634 ("jmxremote.registry.ssl",
635 "set com.sun.management.jmxremote.registry.ssl", "STRING", false),
636
637 _jmxremote_authenticate
638 ("jmxremote.authenticate",
639 "set com.sun.management.jmxremote.authenticate", "STRING", false),
640
641 _jmxremote_password_file
642 ("jmxremote.password.file",
643 "set com.sun.management.jmxremote.password.file", "STRING", false),
644
645 _jmxremote_access_file
646 ("jmxremote.access.file",
647 "set com.sun.management.jmxremote.access.file", "STRING", false),
648
649 _jmxremote_login_config
650 ("jmxremote.login.config",
651 "set com.sun.management.jmxremote.login.config", "STRING", false),
652
653 _jmxremote_ssl_enabled_cipher_suites
654 ("jmxremote.ssl.enabled.cipher.suites",
655 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false),
656
657 _jmxremote_ssl_enabled_protocols
658 ("jmxremote.ssl.enabled.protocols",
659 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false),
660
661 _jmxremote_ssl_need_client_auth
662 ("jmxremote.ssl.need.client.auth",
663 "set com.sun.management.jmxremote.need.client.auth", "STRING", false),
664
665 _jmxremote_ssl_config_file
666 ("jmxremote.ssl.config.file",
667 "set com.sun.management.jmxremote.ssl.config.file", "STRING", false),
668
669 // JDP Protocol support
670 _jmxremote_autodiscovery
671 ("jmxremote.autodiscovery",
672 "set com.sun.management.jmxremote.autodiscovery", "STRING", false),
673
674 _jdp_port
675 ("jdp.port",
676 "set com.sun.management.jdp.port", "INT", false),
677
678 _jdp_address
679 ("jdp.address",
680 "set com.sun.management.jdp.address", "STRING", false),
681
682 _jdp_source_addr
683 ("jdp.source_addr",
684 "set com.sun.management.jdp.source_addr", "STRING", false),
685
686 _jdp_ttl
687 ("jdp.ttl",
688 "set com.sun.management.jdp.ttl", "INT", false),
689
690 _jdp_pause
691 ("jdp.pause",
692 "set com.sun.management.jdp.pause", "INT", false),
693
694 _jdp_name
695 ("jdp.name",
696 "set com.sun.management.jdp.name", "STRING", false)
697
698 {
699 _dcmdparser.add_dcmd_option(&_config_file);
700 _dcmdparser.add_dcmd_option(&_jmxremote_host);
701 _dcmdparser.add_dcmd_option(&_jmxremote_port);
702 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port);
703 _dcmdparser.add_dcmd_option(&_jmxremote_ssl);
704 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl);
705 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate);
706 _dcmdparser.add_dcmd_option(&_jmxremote_password_file);
707 _dcmdparser.add_dcmd_option(&_jmxremote_access_file);
708 _dcmdparser.add_dcmd_option(&_jmxremote_login_config);
709 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites);
710 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols);
711 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth);
712 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file);
713 _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery);
714 _dcmdparser.add_dcmd_option(&_jdp_port);
715 _dcmdparser.add_dcmd_option(&_jdp_address);
716 _dcmdparser.add_dcmd_option(&_jdp_source_addr);
717 _dcmdparser.add_dcmd_option(&_jdp_ttl);
718 _dcmdparser.add_dcmd_option(&_jdp_pause);
719 _dcmdparser.add_dcmd_option(&_jdp_name);
720 }
721
722
723 int JMXStartRemoteDCmd::num_arguments() {
724 ResourceMark rm;
725 JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false);
726 if (dcmd != NULL) {
727 DCmdMark mark(dcmd);
728 return dcmd->_dcmdparser.num_arguments();
729 } else {
730 return 0;
731 }
732 }
733
734
735 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) {
736 ResourceMark rm(THREAD);
737 HandleMark hm(THREAD);
738
739 // Load and initialize the jdk.internal.agent.Agent class
740 // invoke startRemoteManagementAgent(string) method to start
741 // the remote management server.
742 // throw java.lang.NoSuchMethodError if the method doesn't exist
743
744 loadAgentModule(CHECK);
745 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
746 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
747
748 JavaValue result(T_VOID);
749
750 // Pass all command line arguments to java as key=value,...
751 // All checks are done on java side
752
753 int len = 0;
754 stringStream options;
755 char comma[2] = {0,0};
756
757 // Leave default values on Agent.class side and pass only
758 // agruments explicitly set by user. All arguments passed
759 // to jcmd override properties with the same name set by
760 // command line with -D or by managmenent.properties
761 // file.
762 #define PUT_OPTION(a) \
763 do { \
764 if ( (a).is_set() ){ \
765 if ( *((a).type()) == 'I' ) { \
766 options.print("%scom.sun.management.%s=" JLONG_FORMAT, comma, (a).name(), (jlong)((a).value())); \
767 } else { \
768 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (char*)((a).value())); \
769 } \
770 comma[0] = ','; \
771 }\
772 } while(0);
773
774
775 PUT_OPTION(_config_file);
776 PUT_OPTION(_jmxremote_host);
777 PUT_OPTION(_jmxremote_port);
778 PUT_OPTION(_jmxremote_rmi_port);
779 PUT_OPTION(_jmxremote_ssl);
780 PUT_OPTION(_jmxremote_registry_ssl);
781 PUT_OPTION(_jmxremote_authenticate);
782 PUT_OPTION(_jmxremote_password_file);
783 PUT_OPTION(_jmxremote_access_file);
784 PUT_OPTION(_jmxremote_login_config);
785 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites);
786 PUT_OPTION(_jmxremote_ssl_enabled_protocols);
787 PUT_OPTION(_jmxremote_ssl_need_client_auth);
788 PUT_OPTION(_jmxremote_ssl_config_file);
789 PUT_OPTION(_jmxremote_autodiscovery);
790 PUT_OPTION(_jdp_port);
791 PUT_OPTION(_jdp_address);
792 PUT_OPTION(_jdp_source_addr);
793 PUT_OPTION(_jdp_ttl);
794 PUT_OPTION(_jdp_pause);
795 PUT_OPTION(_jdp_name);
796
797 #undef PUT_OPTION
798
799 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK);
800 JavaCalls::call_static(&result, k, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK);
801 }
802
803 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) :
804 DCmd(output, heap_allocated) {
805 // do nothing
806 }
807
808 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) {
809 ResourceMark rm(THREAD);
810 HandleMark hm(THREAD);
811
812 // Load and initialize the jdk.internal.agent.Agent class
813 // invoke startLocalManagementAgent(void) method to start
814 // the local management server
815 // throw java.lang.NoSuchMethodError if method doesn't exist
816
817 loadAgentModule(CHECK);
818 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
819 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
820
821 JavaValue result(T_VOID);
822 JavaCalls::call_static(&result, k, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK);
823 }
824
825 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) {
826 ResourceMark rm(THREAD);
827 HandleMark hm(THREAD);
828
829 // Load and initialize the jdk.internal.agent.Agent class
830 // invoke stopRemoteManagementAgent method to stop the
831 // management server
832 // throw java.lang.NoSuchMethodError if method doesn't exist
833
834 loadAgentModule(CHECK);
835 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
836 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
837
838 JavaValue result(T_VOID);
839 JavaCalls::call_static(&result, k, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK);
840 }
841
842 JMXStatusDCmd::JMXStatusDCmd(outputStream *output, bool heap_allocated) :
843 DCmd(output, heap_allocated) {
844 // do nothing
845 }
846
847 void JMXStatusDCmd::execute(DCmdSource source, TRAPS) {
848 ResourceMark rm(THREAD);
849 HandleMark hm(THREAD);
850
851 // Load and initialize the jdk.internal.agent.Agent class
852 // invoke getManagementAgentStatus() method to generate the status info
853 // throw java.lang.NoSuchMethodError if method doesn't exist
854
855 loadAgentModule(CHECK);
856 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
857 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
858
859 JavaValue result(T_OBJECT);
860 JavaCalls::call_static(&result, k, vmSymbols::getAgentStatus_name(), vmSymbols::void_string_signature(), CHECK);
861
862 jvalue* jv = (jvalue*) result.get_value_addr();
863 oop str = (oop) jv->l;
864 if (str != NULL) {
865 char* out = java_lang_String::as_utf8_string(str);
866 if (out) {
867 output()->print_cr("%s", out);
868 return;
869 }
870 }
871 output()->print_cr("Error obtaining management agent status");
872 }
873
874 VMDynamicLibrariesDCmd::VMDynamicLibrariesDCmd(outputStream *output, bool heap_allocated) :
875 DCmd(output, heap_allocated) {
876 // do nothing
877 }
878
879 void VMDynamicLibrariesDCmd::execute(DCmdSource source, TRAPS) {
880 os::print_dll_info(output());
881 output()->cr();
882 }
883
884 void CompileQueueDCmd::execute(DCmdSource source, TRAPS) {
885 VM_PrintCompileQueue printCompileQueueOp(output());
886 VMThread::execute(&printCompileQueueOp);
887 }
888
889 void CodeListDCmd::execute(DCmdSource source, TRAPS) {
890 CodeCache::print_codelist(output());
891 }
892
893 void CodeCacheDCmd::execute(DCmdSource source, TRAPS) {
894 CodeCache::print_layout(output());
895 }
896
897 //---< BEGIN >--- CodeHeap State Analytics.
898 CodeHeapAnalyticsDCmd::CodeHeapAnalyticsDCmd(outputStream* output, bool heap) :
899 DCmdWithParser(output, heap),
900 _function("function", "Function to be performed (aggregate, UsedSpace, FreeSpace, MethodCount, MethodSpace, MethodAge, MethodNames, discard", "STRING", false, "all"),
901 _granularity("granularity", "Detail level - smaller value -> more detail", "INT", false, "4096") {
902 _dcmdparser.add_dcmd_argument(&_function);
903 _dcmdparser.add_dcmd_argument(&_granularity);
904 }
905
906 void CodeHeapAnalyticsDCmd::execute(DCmdSource source, TRAPS) {
907 jlong granularity = _granularity.value();
908 if (granularity < 1) {
909 Exceptions::fthrow(THREAD_AND_LOCATION, vmSymbols::java_lang_IllegalArgumentException(),
910 "Invalid granularity value " JLONG_FORMAT ". Should be positive.\n", granularity);
911 return;
912 }
913
914 CompileBroker::print_heapinfo(output(), _function.value(), granularity);
915 }
916
917 int CodeHeapAnalyticsDCmd::num_arguments() {
918 ResourceMark rm;
919 CodeHeapAnalyticsDCmd* dcmd = new CodeHeapAnalyticsDCmd(NULL, false);
920 if (dcmd != NULL) {
921 DCmdMark mark(dcmd);
922 return dcmd->_dcmdparser.num_arguments();
923 } else {
924 return 0;
925 }
926 }
927 //---< END >--- CodeHeap State Analytics.
928
929 EventLogDCmd::EventLogDCmd(outputStream* output, bool heap) :
930 DCmdWithParser(output, heap),
931 _log("log", "Name of log to be printed. If omitted, all logs are printed.", "STRING", false, NULL),
932 _max("max", "Maximum number of events to be printed (newest first). If omitted, all events are printed.", "STRING", false, NULL)
933 {
934 _dcmdparser.add_dcmd_option(&_log);
935 _dcmdparser.add_dcmd_option(&_max);
936 }
937
938 void EventLogDCmd::execute(DCmdSource source, TRAPS) {
939 const char* max_value = _max.value();
940 long max = -1;
941 if (max_value != NULL) {
942 char* endptr = NULL;
943 max = ::strtol(max_value, &endptr, 10);
944 if (max == 0 && max_value == endptr) {
945 output()->print_cr("Invalid max option: \"%s\".", max_value);
946 return;
947 }
948 }
949 const char* log_name = _log.value();
950 if (log_name != NULL) {
951 Events::print_one(output(), log_name, max);
952 } else {
953 Events::print_all(output(), max);
954 }
955 }
956
957 int EventLogDCmd::num_arguments() {
958 ResourceMark rm;
959 EventLogDCmd* dcmd = new EventLogDCmd(NULL, false);
960 if (dcmd != NULL) {
961 DCmdMark mark(dcmd);
962 return dcmd->_dcmdparser.num_arguments();
963 } else {
964 return 0;
965 }
966 }
967
968 void CompilerDirectivesPrintDCmd::execute(DCmdSource source, TRAPS) {
969 DirectivesStack::print(output());
970 }
971
972 CompilerDirectivesAddDCmd::CompilerDirectivesAddDCmd(outputStream* output, bool heap) :
973 DCmdWithParser(output, heap),
974 _filename("filename","Name of the directives file", "STRING",true) {
975 _dcmdparser.add_dcmd_argument(&_filename);
976 }
977
978 void CompilerDirectivesAddDCmd::execute(DCmdSource source, TRAPS) {
979 DirectivesParser::parse_from_file(_filename.value(), output());
980 }
981
982 int CompilerDirectivesAddDCmd::num_arguments() {
983 ResourceMark rm;
984 CompilerDirectivesAddDCmd* dcmd = new CompilerDirectivesAddDCmd(NULL, false);
985 if (dcmd != NULL) {
986 DCmdMark mark(dcmd);
987 return dcmd->_dcmdparser.num_arguments();
988 } else {
989 return 0;
990 }
991 }
992
993 void CompilerDirectivesRemoveDCmd::execute(DCmdSource source, TRAPS) {
994 DirectivesStack::pop(1);
995 }
996
997 void CompilerDirectivesClearDCmd::execute(DCmdSource source, TRAPS) {
998 DirectivesStack::clear();
999 }
1000 #if INCLUDE_SERVICES
1001 ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) :
1002 DCmdWithParser(output, heap),
1003 _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"),
1004 _print_subclasses("-s", "If a classname is specified, print its subclasses. "
1005 "Otherwise only its superclasses are printed.", "BOOLEAN", false, "false"),
1006 _classname("classname", "Name of class whose hierarchy should be printed. "
1007 "If not specified, all class hierarchies are printed.",
1008 "STRING", false) {
1009 _dcmdparser.add_dcmd_option(&_print_interfaces);
1010 _dcmdparser.add_dcmd_option(&_print_subclasses);
1011 _dcmdparser.add_dcmd_argument(&_classname);
1012 }
1013
1014 void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) {
1015 VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(),
1016 _print_subclasses.value(), _classname.value());
1017 VMThread::execute(&printClassHierarchyOp);
1018 }
1019
1020 int ClassHierarchyDCmd::num_arguments() {
1021 ResourceMark rm;
1022 ClassHierarchyDCmd* dcmd = new ClassHierarchyDCmd(NULL, false);
1023 if (dcmd != NULL) {
1024 DCmdMark mark(dcmd);
1025 return dcmd->_dcmdparser.num_arguments();
1026 } else {
1027 return 0;
1028 }
1029 }
1030
1031 #endif
1032
1033 class VM_DumpTouchedMethods : public VM_Operation {
1034 private:
1035 outputStream* _out;
1036 public:
1037 VM_DumpTouchedMethods(outputStream* out) {
1038 _out = out;
1039 }
1040
1041 virtual VMOp_Type type() const { return VMOp_DumpTouchedMethods; }
1042
1043 virtual void doit() {
1044 Method::print_touched_methods(_out);
1045 }
1046 };
1047
1048 TouchedMethodsDCmd::TouchedMethodsDCmd(outputStream* output, bool heap) :
1049 DCmdWithParser(output, heap)
1050 {}
1051
1052 void TouchedMethodsDCmd::execute(DCmdSource source, TRAPS) {
1053 if (!LogTouchedMethods) {
1054 output()->print_cr("VM.print_touched_methods command requires -XX:+LogTouchedMethods");
1055 return;
1056 }
1057 VM_DumpTouchedMethods dumper(output());
1058 VMThread::execute(&dumper);
1059 }
1060
1061 int TouchedMethodsDCmd::num_arguments() {
1062 return 0;
1063 }
1064
1065 #if INCLUDE_JVMTI
1066 extern "C" typedef char const* (JNICALL *debugInit_startDebuggingViaCommandPtr)(JNIEnv* env, jthread thread, char const** transport_name,
1067 char const** address, jboolean* first_start);
1068 static debugInit_startDebuggingViaCommandPtr dvc_start_ptr = NULL;
1069
1070 DebugOnCmdStartDCmd::DebugOnCmdStartDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap) {
1071 }
1072
1073 void DebugOnCmdStartDCmd::execute(DCmdSource source, TRAPS) {
1074 char const* transport = NULL;
1075 char const* addr = NULL;
1076 jboolean is_first_start = JNI_FALSE;
1077 JavaThread* thread = (JavaThread*) THREAD;
1078 jthread jt = JNIHandles::make_local(thread->threadObj());
1079 ThreadToNativeFromVM ttn(thread);
1080 const char *error = "Could not find jdwp agent.";
1081
1082 if (!dvc_start_ptr) {
1083 for (AgentLibrary* agent = Arguments::agents(); agent != NULL; agent = agent->next()) {
1084 if ((strcmp("jdwp", agent->name()) == 0) && (dvc_start_ptr == NULL)) {
1085 char const* func = "debugInit_startDebuggingViaCommand";
1086 dvc_start_ptr = (debugInit_startDebuggingViaCommandPtr) os::find_agent_function(agent, false, &func, 1);
1087 }
1088 }
1089 }
1090
1091 if (dvc_start_ptr) {
1092 error = dvc_start_ptr(thread->jni_environment(), jt, &transport, &addr, &is_first_start);
1093 }
1094
1095 if (error != NULL) {
1096 output()->print_cr("Debugging has not been started: %s", error);
1097 } else {
1098 output()->print_cr(is_first_start ? "Debugging has been started." : "Debugging is already active.");
1099 output()->print_cr("Transport : %s", transport ? transport : "#unknown");
1100 output()->print_cr("Address : %s", addr ? addr : "#unknown");
1101 }
1102 }
1103 #endif // INCLUDE_JVMTI