1 /*
2 * Copyright (c) 2011, 2024, 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 #ifndef SHARE_SERVICES_DIAGNOSTICCOMMAND_HPP
26 #define SHARE_SERVICES_DIAGNOSTICCOMMAND_HPP
27
28 #include "classfile/stringTable.hpp"
29 #include "classfile/symbolTable.hpp"
30 #include "classfile/systemDictionary.hpp"
31 #include "classfile/vmSymbols.hpp"
32 #include "runtime/arguments.hpp"
33 #include "runtime/os.hpp"
34 #include "runtime/vmThread.hpp"
35 #include "services/diagnosticArgument.hpp"
36 #include "services/diagnosticCommand.hpp"
37 #include "services/diagnosticFramework.hpp"
38 #include "utilities/macros.hpp"
39 #include "utilities/ostream.hpp"
40 #include "oops/method.hpp"
41
42 class HelpDCmd : public DCmdWithParser {
43 protected:
44 DCmdArgument<bool> _all;
45 DCmdArgument<char*> _cmd;
46 public:
47 static int num_arguments() { return 2; }
48 HelpDCmd(outputStream* output, bool heap);
49 static const char* name() { return "help"; }
50 static const char* description() {
51 return "For more information about a specific command use 'help <command>'. "
52 "With no argument this will show a list of available commands. "
53 "'help all' will show help for all commands.";
54 }
55 static const char* impact() { return "Low"; }
56 virtual void execute(DCmdSource source, TRAPS);
57 };
58
59 class VersionDCmd : public DCmd {
60 public:
61 VersionDCmd(outputStream* output, bool heap) : DCmd(output,heap) { }
62 static const char* name() { return "VM.version"; }
63 static const char* description() {
64 return "Print JVM version information.";
65 }
66 static const char* impact() { return "Low"; }
67 virtual void execute(DCmdSource source, TRAPS);
68 };
69
70 class CommandLineDCmd : public DCmd {
71 public:
72 CommandLineDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
73 static const char* name() { return "VM.command_line"; }
74 static const char* description() {
75 return "Print the command line used to start this VM instance.";
76 }
77 static const char* impact() { return "Low"; }
78 virtual void execute(DCmdSource source, TRAPS) {
79 Arguments::print_on(_output);
80 }
81 };
82
83 // See also: get_system_properties in attachListener.cpp
84 class PrintSystemPropertiesDCmd : public DCmd {
85 public:
86 PrintSystemPropertiesDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
87 static const char* name() { return "VM.system_properties"; }
88 static const char* description() {
89 return "Print system properties.";
90 }
91 static const char* impact() {
92 return "Low";
93 }
94 virtual void execute(DCmdSource source, TRAPS);
95 };
96
97 // See also: print_flag in attachListener.cpp
98 class PrintVMFlagsDCmd : public DCmdWithParser {
99 protected:
100 DCmdArgument<bool> _all;
101 public:
102 static int num_arguments() { return 1; }
103 PrintVMFlagsDCmd(outputStream* output, bool heap);
104 static const char* name() { return "VM.flags"; }
105 static const char* description() {
106 return "Print VM flag options and their current values.";
107 }
108 static const char* impact() {
109 return "Low";
110 }
111 virtual void execute(DCmdSource source, TRAPS);
112 };
113
114 class SetVMFlagDCmd : public DCmdWithParser {
115 protected:
116 DCmdArgument<char*> _flag;
117 DCmdArgument<char*> _value;
118
119 public:
120 static int num_arguments() { return 2; }
121 SetVMFlagDCmd(outputStream* output, bool heap);
122 static const char* name() { return "VM.set_flag"; }
123 static const char* description() {
124 return "Sets VM flag option using the provided value.";
125 }
126 static const char* impact() {
127 return "Low";
128 }
129 virtual void execute(DCmdSource source, TRAPS);
130 };
131
132 class JVMTIDataDumpDCmd : public DCmd {
133 public:
134 JVMTIDataDumpDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
135 static const char* name() { return "JVMTI.data_dump"; }
136 static const char* description() {
137 return "Signal the JVM to do a data-dump request for JVMTI.";
138 }
139 static const char* impact() {
140 return "High";
141 }
142 virtual void execute(DCmdSource source, TRAPS);
143 };
144
145 #if INCLUDE_SERVICES
146 #if INCLUDE_JVMTI
147 class JVMTIAgentLoadDCmd : public DCmdWithParser {
148 protected:
149 DCmdArgument<char*> _libpath;
150 DCmdArgument<char*> _option;
151 public:
152 static int num_arguments() { return 2; }
153 JVMTIAgentLoadDCmd(outputStream* output, bool heap);
154 static const char* name() { return "JVMTI.agent_load"; }
155 static const char* description() {
156 return "Load JVMTI native agent.";
157 }
158 static const char* impact() { return "Low"; }
159 virtual void execute(DCmdSource source, TRAPS);
160 };
161 #endif // INCLUDE_JVMTI
162 #endif // INCLUDE_SERVICES
163
164 class VMDynamicLibrariesDCmd : public DCmd {
165 public:
166 VMDynamicLibrariesDCmd(outputStream* output, bool heap);
167 static const char* name() {
168 return "VM.dynlibs";
169 }
170 static const char* description() {
171 return "Print loaded dynamic libraries.";
172 }
173 static const char* impact() {
174 return "Low";
175 }
176 virtual void execute(DCmdSource source, TRAPS);
177 };
178
179 class VMUptimeDCmd : public DCmdWithParser {
180 protected:
181 DCmdArgument<bool> _date;
182 public:
183 static int num_arguments() { return 1; }
184 VMUptimeDCmd(outputStream* output, bool heap);
185 static const char* name() { return "VM.uptime"; }
186 static const char* description() {
187 return "Print VM uptime.";
188 }
189 static const char* impact() {
190 return "Low";
191 }
192 virtual void execute(DCmdSource source, TRAPS);
193 };
194
195 class VMInfoDCmd : public DCmd {
196 public:
197 VMInfoDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
198 static const char* name() { return "VM.info"; }
199 static const char* description() {
200 return "Print information about JVM environment and status.";
201 }
202 static const char* impact() { return "Low"; }
203 virtual void execute(DCmdSource source, TRAPS);
204 };
205
206 class SystemGCDCmd : public DCmd {
207 public:
208 SystemGCDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
209 static const char* name() { return "GC.run"; }
210 static const char* description() {
211 return "Call java.lang.System.gc().";
212 }
213 static const char* impact() {
214 return "Medium: Depends on Java heap size and content.";
215 }
216 virtual void execute(DCmdSource source, TRAPS);
217 };
218
219 class RunFinalizationDCmd : public DCmd {
220 public:
221 RunFinalizationDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
222 static const char* name() { return "GC.run_finalization"; }
223 static const char* description() {
224 return "Call java.lang.System.runFinalization().";
225 }
226 static const char* impact() {
227 return "Medium: Depends on Java content.";
228 }
229 virtual void execute(DCmdSource source, TRAPS);
230 };
231
232 class HeapInfoDCmd : public DCmd {
233 public:
234 HeapInfoDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
235 static const char* name() { return "GC.heap_info"; }
236 static const char* description() {
237 return "Provide generic Java heap information.";
238 }
239 static const char* impact() {
240 return "Medium";
241 }
242
243 virtual void execute(DCmdSource source, TRAPS);
244 };
245
246 class FinalizerInfoDCmd : public DCmd {
247 public:
248 FinalizerInfoDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
249 static const char* name() { return "GC.finalizer_info"; }
250 static const char* description() {
251 return "Provide information about Java finalization queue.";
252 }
253 static const char* impact() {
254 return "Medium";
255 }
256
257 virtual void execute(DCmdSource source, TRAPS);
258 };
259
260 #if INCLUDE_SERVICES // Heap dumping supported
261 // See also: dump_heap in attachListener.cpp
262 class HeapDumpDCmd : public DCmdWithParser {
263 protected:
264 DCmdArgument<char*> _filename;
265 DCmdArgument<bool> _all;
266 DCmdArgument<jlong> _gzip;
267 DCmdArgument<bool> _overwrite;
268 DCmdArgument<jlong> _parallel;
269 public:
270 static int num_arguments() { return 5; }
271 HeapDumpDCmd(outputStream* output, bool heap);
272 static const char* name() {
273 return "GC.heap_dump";
274 }
275 static const char* description() {
276 return "Generate a HPROF format dump of the Java heap.";
277 }
278 static const char* impact() {
279 return "High: Depends on Java heap size and content. "
280 "Request a full GC unless the '-all' option is specified.";
281 }
282 virtual void execute(DCmdSource source, TRAPS);
283 };
284 #endif // INCLUDE_SERVICES
285
286 // See also: inspectheap in attachListener.cpp
287 class ClassHistogramDCmd : public DCmdWithParser {
288 protected:
289 DCmdArgument<bool> _all;
290 DCmdArgument<jlong> _parallel_thread_num;
291 public:
292 static int num_arguments() { return 2; }
293 ClassHistogramDCmd(outputStream* output, bool heap);
294 static const char* name() {
295 return "GC.class_histogram";
296 }
297 static const char* description() {
298 return "Provide statistics about the Java heap usage.";
299 }
300 static const char* impact() {
301 return "High: Depends on Java heap size and content.";
302 }
303 virtual void execute(DCmdSource source, TRAPS);
304 };
305
306 class ClassHierarchyDCmd : public DCmdWithParser {
307 protected:
308 DCmdArgument<bool> _print_interfaces; // true if inherited interfaces should be printed.
309 DCmdArgument<bool> _print_subclasses; // true if subclasses of the specified classname should be printed.
310 DCmdArgument<char*> _classname; // Optional single class name whose hierarchy should be printed.
311 public:
312 static int num_arguments() { return 3; }
313 ClassHierarchyDCmd(outputStream* output, bool heap);
314 static const char* name() {
315 return "VM.class_hierarchy";
316 }
317 static const char* description() {
318 return "Print a list of all loaded classes, indented to show the class hierarchy. "
319 "The name of each class is followed by the ClassLoaderData* of its ClassLoader, "
320 "or \"null\" if loaded by the bootstrap class loader.";
321 }
322 static const char* impact() {
323 return "Medium: Depends on number of loaded classes.";
324 }
325 virtual void execute(DCmdSource source, TRAPS);
326 };
327
328 #if INCLUDE_CDS
329 class DumpSharedArchiveDCmd: public DCmdWithParser {
330 protected:
331 DCmdArgument<char*> _suboption; // option of VM.cds
332 DCmdArgument<char*> _filename; // file name, optional
333 public:
334 static int num_arguments() { return 2; }
335 DumpSharedArchiveDCmd(outputStream* output, bool heap);
336 static const char* name() {
337 return "VM.cds";
338 }
339 static const char* description() {
340 return "Dump a static or dynamic shared archive including all shareable classes";
341 }
342 static const char* impact() {
343 return "Medium: Pause time depends on number of loaded classes";
344 }
345 virtual void execute(DCmdSource source, TRAPS);
346 };
347 #endif // INCLUDE_CDS
348
349 // See also: thread_dump in attachListener.cpp
350 class ThreadDumpDCmd : public DCmdWithParser {
351 protected:
352 DCmdArgument<bool> _locks;
353 DCmdArgument<bool> _extended;
354 public:
355 static int num_arguments() { return 2; }
356 ThreadDumpDCmd(outputStream* output, bool heap);
357 static const char* name() { return "Thread.print"; }
358 static const char* description() {
359 return "Print all threads with stacktraces.";
360 }
361 static const char* impact() {
362 return "Medium: Depends on the number of threads.";
363 }
364 virtual void execute(DCmdSource source, TRAPS);
365 };
366
367 // Enhanced JMX Agent support
368
369 class JMXStartRemoteDCmd : public DCmdWithParser {
370
371 // Explicitly list all properties that could be
372 // passed to Agent.startRemoteManagementAgent()
373 // com.sun.management is omitted
374
375 DCmdArgument<char *> _config_file;
376 DCmdArgument<char *> _jmxremote_host;
377 DCmdArgument<char *> _jmxremote_port;
378 DCmdArgument<char *> _jmxremote_rmi_port;
379 DCmdArgument<char *> _jmxremote_ssl;
380 DCmdArgument<char *> _jmxremote_registry_ssl;
381 DCmdArgument<char *> _jmxremote_authenticate;
382 DCmdArgument<char *> _jmxremote_password_file;
383 DCmdArgument<char *> _jmxremote_access_file;
384 DCmdArgument<char *> _jmxremote_login_config;
385 DCmdArgument<char *> _jmxremote_ssl_enabled_cipher_suites;
386 DCmdArgument<char *> _jmxremote_ssl_enabled_protocols;
387 DCmdArgument<char *> _jmxremote_ssl_need_client_auth;
388 DCmdArgument<char *> _jmxremote_ssl_config_file;
389
390 // JDP support
391 // Keep autodiscovery char* not bool to pass true/false
392 // as property value to java level.
393 DCmdArgument<char *> _jmxremote_autodiscovery;
394 DCmdArgument<jlong> _jdp_port;
395 DCmdArgument<char *> _jdp_address;
396 DCmdArgument<char *> _jdp_source_addr;
397 DCmdArgument<jlong> _jdp_ttl;
398 DCmdArgument<jlong> _jdp_pause;
399 DCmdArgument<char *> _jdp_name;
400
401 public:
402 static int num_arguments() { return 21; }
403
404 JMXStartRemoteDCmd(outputStream *output, bool heap_allocated);
405
406 static const char *name() {
407 return "ManagementAgent.start";
408 }
409
410 static const char *description() {
411 return "Start remote management agent.";
412 }
413
414 virtual void execute(DCmdSource source, TRAPS);
415 };
416
417 class JMXStartLocalDCmd : public DCmd {
418
419 // Explicitly request start of local agent,
420 // it will not be started by start dcmd
421
422
423 public:
424 JMXStartLocalDCmd(outputStream *output, bool heap_allocated);
425
426 static const char *name() {
427 return "ManagementAgent.start_local";
428 }
429
430 static const char *description() {
431 return "Start local management agent.";
432 }
433
434 virtual void execute(DCmdSource source, TRAPS);
435
436 };
437
438 class JMXStopRemoteDCmd : public DCmd {
439 public:
440 JMXStopRemoteDCmd(outputStream *output, bool heap_allocated) :
441 DCmd(output, heap_allocated) {
442 // Do Nothing
443 }
444
445 static const char *name() {
446 return "ManagementAgent.stop";
447 }
448
449 static const char *description() {
450 return "Stop remote management agent.";
451 }
452
453 virtual void execute(DCmdSource source, TRAPS);
454 };
455
456 // Print the JMX system status
457 class JMXStatusDCmd : public DCmd {
458 public:
459 JMXStatusDCmd(outputStream *output, bool heap_allocated);
460
461 static const char *name() {
462 return "ManagementAgent.status";
463 }
464
465 static const char *description() {
466 return "Print the management agent status.";
467 }
468
469 virtual void execute(DCmdSource source, TRAPS);
470
471 };
472
473 class CompileQueueDCmd : public DCmd {
474 public:
475 CompileQueueDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
476 static const char* name() {
477 return "Compiler.queue";
478 }
479 static const char* description() {
480 return "Print methods queued for compilation.";
481 }
482 static const char* impact() {
483 return "Low";
484 }
485 virtual void execute(DCmdSource source, TRAPS);
486 };
487
488 #ifdef LINUX
489 class PerfMapDCmd : public DCmdWithParser {
490 protected:
491 DCmdArgument<char*> _filename;
492 public:
493 static int num_arguments() { return 1; }
494 PerfMapDCmd(outputStream* output, bool heap);
495 static const char* name() {
496 return "Compiler.perfmap";
497 }
498 static const char* description() {
499 return "Write map file for Linux perf tool.";
500 }
501 static const char* impact() {
502 return "Low";
503 }
504 virtual void execute(DCmdSource source, TRAPS);
505 };
506 #endif // LINUX
507
508 class CodeListDCmd : public DCmd {
509 public:
510 CodeListDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
511 static const char* name() {
512 return "Compiler.codelist";
513 }
514 static const char* description() {
515 return "Print all compiled methods in code cache that are alive";
516 }
517 static const char* impact() {
518 return "Medium";
519 }
520 virtual void execute(DCmdSource source, TRAPS);
521 };
522
523 class CodeCacheDCmd : public DCmd {
524 public:
525 CodeCacheDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
526 static const char* name() {
527 return "Compiler.codecache";
528 }
529 static const char* description() {
530 return "Print code cache layout and bounds.";
531 }
532 static const char* impact() {
533 return "Low";
534 }
535 virtual void execute(DCmdSource source, TRAPS);
536 };
537
538 //---< BEGIN >--- CodeHeap State Analytics.
539 class CodeHeapAnalyticsDCmd : public DCmdWithParser {
540 protected:
541 DCmdArgument<char*> _function;
542 DCmdArgument<jlong> _granularity;
543 public:
544 static int num_arguments() { return 2; }
545 CodeHeapAnalyticsDCmd(outputStream* output, bool heap);
546 static const char* name() {
547 return "Compiler.CodeHeap_Analytics";
548 }
549 static const char* description() {
550 return "Print CodeHeap analytics";
551 }
552 static const char* impact() {
553 return "Low: Depends on code heap size and content. "
554 "Holds CodeCache_lock during analysis step, usually sub-second duration.";
555 }
556 virtual void execute(DCmdSource source, TRAPS);
557 };
558 //---< END >--- CodeHeap State Analytics.
559
560 class CompilerDirectivesPrintDCmd : public DCmd {
561 public:
562 CompilerDirectivesPrintDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
563 static const char* name() {
564 return "Compiler.directives_print";
565 }
566 static const char* description() {
567 return "Print all active compiler directives.";
568 }
569 static const char* impact() {
570 return "Low";
571 }
572 virtual void execute(DCmdSource source, TRAPS);
573 };
574
575 class CompilerDirectivesRemoveDCmd : public DCmd {
576 public:
577 CompilerDirectivesRemoveDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
578 static const char* name() {
579 return "Compiler.directives_remove";
580 }
581 static const char* description() {
582 return "Remove latest added compiler directive.";
583 }
584 static const char* impact() {
585 return "Low";
586 }
587 virtual void execute(DCmdSource source, TRAPS);
588 };
589
590 class CompilerDirectivesAddDCmd : public DCmdWithParser {
591 protected:
592 DCmdArgument<char*> _filename;
593 public:
594 static int num_arguments() { return 1; }
595 CompilerDirectivesAddDCmd(outputStream* output, bool heap);
596 static const char* name() {
597 return "Compiler.directives_add";
598 }
599 static const char* description() {
600 return "Add compiler directives from file.";
601 }
602 static const char* impact() {
603 return "Low";
604 }
605 virtual void execute(DCmdSource source, TRAPS);
606 };
607
608 class CompilerDirectivesClearDCmd : public DCmd {
609 public:
610 CompilerDirectivesClearDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
611 static const char* name() {
612 return "Compiler.directives_clear";
613 }
614 static const char* description() {
615 return "Remove all compiler directives.";
616 }
617 static const char* impact() {
618 return "Low";
619 }
620 virtual void execute(DCmdSource source, TRAPS);
621 };
622
623 ///////////////////////////////////////////////////////////////////////
624 //
625 // jcmd command support for symbol table, string table and system dictionary dumping:
626 // VM.symboltable -verbose: for dumping the symbol table
627 // VM.stringtable -verbose: for dumping the string table
628 // VM.systemdictionary -verbose: for dumping the system dictionary table
629 //
630 class VM_DumpHashtable : public VM_Operation {
631 private:
632 outputStream* _out;
633 int _which;
634 bool _verbose;
635 public:
636 enum {
637 DumpSymbols = 1 << 0,
638 DumpStrings = 1 << 1,
639 DumpSysDict = 1 << 2 // not implemented yet
640 };
641 VM_DumpHashtable(outputStream* out, int which, bool verbose) {
642 _out = out;
643 _which = which;
644 _verbose = verbose;
645 }
646
647 virtual VMOp_Type type() const { return VMOp_DumpHashtable; }
648
649 virtual void doit() {
650 switch (_which) {
651 case DumpSymbols:
652 SymbolTable::dump(_out, _verbose);
653 break;
654 case DumpStrings:
655 StringTable::dump(_out, _verbose);
656 break;
657 case DumpSysDict:
658 SystemDictionary::dump(_out, _verbose);
659 break;
660 default:
661 ShouldNotReachHere();
662 }
663 }
664 };
665
666 class SymboltableDCmd : public DCmdWithParser {
667 protected:
668 DCmdArgument<bool> _verbose;
669 public:
670 static int num_arguments() { return 1; }
671 SymboltableDCmd(outputStream* output, bool heap);
672 static const char* name() {
673 return "VM.symboltable";
674 }
675 static const char* description() {
676 return "Dump symbol table.";
677 }
678 static const char* impact() {
679 return "Medium: Depends on Java content.";
680 }
681 virtual void execute(DCmdSource source, TRAPS);
682 };
683
684 class StringtableDCmd : public DCmdWithParser {
685 protected:
686 DCmdArgument<bool> _verbose;
687 public:
688 static int num_arguments() { return 1; }
689 StringtableDCmd(outputStream* output, bool heap);
690 static const char* name() {
691 return "VM.stringtable";
692 }
693 static const char* description() {
694 return "Dump string table.";
695 }
696 static const char* impact() {
697 return "Medium: Depends on Java content.";
698 }
699 virtual void execute(DCmdSource source, TRAPS);
700 };
701
702 class SystemDictionaryDCmd : public DCmdWithParser {
703 protected:
704 DCmdArgument<bool> _verbose;
705 public:
706 static int num_arguments() { return 1; }
707 SystemDictionaryDCmd(outputStream* output, bool heap);
708 static const char* name() {
709 return "VM.systemdictionary";
710 }
711 static const char* description() {
712 return "Prints the statistics for dictionary hashtable sizes and bucket length";
713 }
714 static const char* impact() {
715 return "Medium: Depends on Java content.";
716 }
717 virtual void execute(DCmdSource source, TRAPS);
718 };
719
720 class ClassesDCmd : public DCmdWithParser {
721 protected:
722 DCmdArgument<bool> _verbose;
723 public:
724 static int num_arguments() { return 1; }
725 ClassesDCmd(outputStream* output, bool heap);
726 static const char* name() {
727 return "VM.classes";
728 }
729 static const char* description() {
730 return "Print all loaded classes";
731 }
732 static const char* impact() {
733 return "Medium: Depends on number of loaded classes.";
734 }
735 virtual void execute(DCmdSource source, TRAPS);
736 };
737
738 class EventLogDCmd : public DCmdWithParser {
739 protected:
740 DCmdArgument<char*> _log;
741 DCmdArgument<jlong> _max;
742 public:
743 static int num_arguments() { return 2; }
744 EventLogDCmd(outputStream* output, bool heap);
745 static const char* name() {
746 return "VM.events";
747 }
748 static const char* description() {
749 return "Print VM event logs";
750 }
751 static const char* impact() {
752 return "Low: Depends on event log size. ";
753 }
754 virtual void execute(DCmdSource source, TRAPS);
755 };
756
757 class ThreadDumpToFileDCmd : public DCmdWithParser {
758 private:
759 void dumpToFile(Symbol* name, Symbol* signature, const char* path, bool overwrite, TRAPS);
760 protected:
761 DCmdArgument<bool> _overwrite;
762 DCmdArgument<char*> _format;
763 DCmdArgument<char*> _filepath;
764 public:
765 static int num_arguments() { return 3; }
766 ThreadDumpToFileDCmd(outputStream *output, bool heap);
767 static const char *name() {
768 return "Thread.dump_to_file";
769 }
770 static const char *description() {
771 return "Dump threads, with stack traces, to a file in plain text or JSON format.";
772 }
773 static const char* impact() {
774 return "Medium: Depends on the number of threads.";
775 }
776 virtual void execute(DCmdSource source, TRAPS);
777 };
778
779 class VThreadSchedulerDCmd : public DCmd {
780 public:
781 VThreadSchedulerDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
782 static const char* name() {
783 return "Thread.vthread_scheduler";
784 }
785 static const char* description() {
786 return "Print the virtual thread scheduler, and the delayed task schedulers that support "
787 "virtual threads doing timed operations.";
788 }
789 static const char* impact() { return "Low"; }
790 virtual void execute(DCmdSource source, TRAPS);
791 };
792
793 class VThreadPollersDCmd : public DCmd {
794 public:
795 VThreadPollersDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
796 static const char* name() {
797 return "Thread.vthread_pollers";
798 }
799 static const char* description() {
800 return "Print the I/O pollers that support virtual threads doing blocking network I/O operations.";
801 }
802 static const char* impact() { return "Low"; }
803 virtual void execute(DCmdSource source, TRAPS);
804 };
805
806 class CompilationMemoryStatisticDCmd: public DCmdWithParser {
807 protected:
808 DCmdArgument<bool> _human_readable;
809 DCmdArgument<MemorySizeArgument> _minsize;
810 public:
811 static int num_arguments() { return 2; }
812 CompilationMemoryStatisticDCmd(outputStream* output, bool heap);
813 static const char* name() {
814 return "Compiler.memory";
815 }
816 static const char* description() {
817 return "Print compilation footprint";
818 }
819 static const char* impact() {
820 return "Medium: Pause time depends on number of compiled methods";
821 }
822 virtual void execute(DCmdSource source, TRAPS);
823 };
824
825 #if defined(LINUX) || defined(_WIN64) || defined(__APPLE__)
826
827 class SystemMapDCmd : public DCmd {
828 public:
829 SystemMapDCmd(outputStream* output, bool heap);
830 static const char* name() { return "System.map"; }
831 static const char* description() {
832 return "Prints an annotated process memory map of the VM process (linux, Windows and MacOS only).";
833 }
834 static const char* impact() { return "Medium; can be high for very large java heaps."; }
835 virtual void execute(DCmdSource source, TRAPS);
836 };
837
838 class SystemDumpMapDCmd : public DCmdWithParser {
839 DCmdArgument<char*> _filename;
840 public:
841 static int num_arguments() { return 1; }
842 SystemDumpMapDCmd(outputStream* output, bool heap);
843 static const char* name() { return "System.dump_map"; }
844 static const char* description() {
845 return "Dumps an annotated process memory map to an output file (linux, Windows and MacOS only).";
846 }
847 static const char* impact() { return "Medium; can be high for very large java heaps."; }
848 virtual void execute(DCmdSource source, TRAPS);
849 };
850
851 #endif // LINUX, WINDOWS or MACOS
852
853 #endif // SHARE_SERVICES_DIAGNOSTICCOMMAND_HPP