1 /*
2 * Copyright (c) 2011, 2025, 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 "oops/method.hpp"
33 #include "runtime/arguments.hpp"
34 #include "runtime/os.hpp"
35 #include "runtime/vmThread.hpp"
36 #include "services/diagnosticArgument.hpp"
37 #include "services/diagnosticCommand.hpp"
38 #include "services/diagnosticFramework.hpp"
39 #include "utilities/macros.hpp"
40 #include "utilities/ostream.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 AOTEndTrainingDCmd : public DCmd {
330 public:
331 AOTEndTrainingDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
332 static const char* name() { return "AOT.end_training"; }
333 static const char* description() {
334 return "End AOT training and create the cache.";
335 }
336 static const char* impact() {
337 return "Medium: Pause time depends on number of loaded classes";
338 }
339 virtual void execute(DCmdSource source, TRAPS);
340 };
341 #endif // INCLUDE_CDS
342
343 #if INCLUDE_CDS
344 class DumpSharedArchiveDCmd: public DCmdWithParser {
345 protected:
346 DCmdArgument<char*> _suboption; // option of VM.cds
347 DCmdArgument<char*> _filename; // file name, optional
348 public:
349 static int num_arguments() { return 2; }
350 DumpSharedArchiveDCmd(outputStream* output, bool heap);
351 static const char* name() {
352 return "VM.cds";
353 }
354 static const char* description() {
355 return "Dump a static or dynamic shared archive including all shareable classes";
356 }
357 static const char* impact() {
358 return "Medium: Pause time depends on number of loaded classes";
359 }
360 virtual void execute(DCmdSource source, TRAPS);
361 };
362 #endif // INCLUDE_CDS
363
364 // See also: thread_dump in attachListener.cpp
365 class ThreadDumpDCmd : public DCmdWithParser {
366 protected:
367 DCmdArgument<bool> _locks;
368 DCmdArgument<bool> _extended;
369 public:
370 static int num_arguments() { return 2; }
371 ThreadDumpDCmd(outputStream* output, bool heap);
372 static const char* name() { return "Thread.print"; }
373 static const char* description() {
374 return "Print all platform threads, and mounted virtual threads, "
375 "with stack traces. The Thread.dump_to_file command will "
376 "print all threads to a file.";
377 }
378 static const char* impact() {
379 return "Medium: Depends on the number of threads.";
380 }
381 virtual void execute(DCmdSource source, TRAPS);
382 };
383
384 // Enhanced JMX Agent support
385
386 class JMXStartRemoteDCmd : public DCmdWithParser {
387
388 // Explicitly list all properties that could be
389 // passed to Agent.startRemoteManagementAgent()
390 // com.sun.management is omitted
391
392 DCmdArgument<char *> _config_file;
393 DCmdArgument<char *> _jmxremote_host;
394 DCmdArgument<char *> _jmxremote_port;
395 DCmdArgument<char *> _jmxremote_rmi_port;
396 DCmdArgument<char *> _jmxremote_ssl;
397 DCmdArgument<char *> _jmxremote_registry_ssl;
398 DCmdArgument<char *> _jmxremote_authenticate;
399 DCmdArgument<char *> _jmxremote_password_file;
400 DCmdArgument<char *> _jmxremote_access_file;
401 DCmdArgument<char *> _jmxremote_login_config;
402 DCmdArgument<char *> _jmxremote_ssl_enabled_cipher_suites;
403 DCmdArgument<char *> _jmxremote_ssl_enabled_protocols;
404 DCmdArgument<char *> _jmxremote_ssl_need_client_auth;
405 DCmdArgument<char *> _jmxremote_ssl_config_file;
406
407 // JDP support
408 // Keep autodiscovery char* not bool to pass true/false
409 // as property value to java level.
410 DCmdArgument<char *> _jmxremote_autodiscovery;
411 DCmdArgument<jlong> _jdp_port;
412 DCmdArgument<char *> _jdp_address;
413 DCmdArgument<char *> _jdp_source_addr;
414 DCmdArgument<jlong> _jdp_ttl;
415 DCmdArgument<jlong> _jdp_pause;
416 DCmdArgument<char *> _jdp_name;
417
418 public:
419 static int num_arguments() { return 21; }
420
421 JMXStartRemoteDCmd(outputStream *output, bool heap_allocated);
422
423 static const char *name() {
424 return "ManagementAgent.start";
425 }
426
427 static const char *description() {
428 return "Start remote management agent.";
429 }
430
431 virtual void execute(DCmdSource source, TRAPS);
432 };
433
434 class JMXStartLocalDCmd : public DCmd {
435
436 // Explicitly request start of local agent,
437 // it will not be started by start dcmd
438
439
440 public:
441 JMXStartLocalDCmd(outputStream *output, bool heap_allocated);
442
443 static const char *name() {
444 return "ManagementAgent.start_local";
445 }
446
447 static const char *description() {
448 return "Start local management agent.";
449 }
450
451 virtual void execute(DCmdSource source, TRAPS);
452
453 };
454
455 class JMXStopRemoteDCmd : public DCmd {
456 public:
457 JMXStopRemoteDCmd(outputStream *output, bool heap_allocated) :
458 DCmd(output, heap_allocated) {
459 // Do Nothing
460 }
461
462 static const char *name() {
463 return "ManagementAgent.stop";
464 }
465
466 static const char *description() {
467 return "Stop remote management agent.";
468 }
469
470 virtual void execute(DCmdSource source, TRAPS);
471 };
472
473 // Print the JMX system status
474 class JMXStatusDCmd : public DCmd {
475 public:
476 JMXStatusDCmd(outputStream *output, bool heap_allocated);
477
478 static const char *name() {
479 return "ManagementAgent.status";
480 }
481
482 static const char *description() {
483 return "Print the management agent status.";
484 }
485
486 virtual void execute(DCmdSource source, TRAPS);
487
488 };
489
490 class CompileQueueDCmd : public DCmd {
491 public:
492 CompileQueueDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
493 static const char* name() {
494 return "Compiler.queue";
495 }
496 static const char* description() {
497 return "Print methods queued for compilation.";
498 }
499 static const char* impact() {
500 return "Low";
501 }
502 virtual void execute(DCmdSource source, TRAPS);
503 };
504
505 #ifdef LINUX
506 class PerfMapDCmd : public DCmdWithParser {
507 protected:
508 DCmdArgument<char*> _filename;
509 public:
510 static int num_arguments() { return 1; }
511 PerfMapDCmd(outputStream* output, bool heap);
512 static const char* name() {
513 return "Compiler.perfmap";
514 }
515 static const char* description() {
516 return "Write map file for Linux perf tool.";
517 }
518 static const char* impact() {
519 return "Low";
520 }
521 virtual void execute(DCmdSource source, TRAPS);
522 };
523 #endif // LINUX
524
525 class CodeListDCmd : public DCmd {
526 public:
527 CodeListDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
528 static const char* name() {
529 return "Compiler.codelist";
530 }
531 static const char* description() {
532 return "Print all compiled methods in code cache that are alive";
533 }
534 static const char* impact() {
535 return "Medium";
536 }
537 virtual void execute(DCmdSource source, TRAPS);
538 };
539
540 class CodeCacheDCmd : public DCmd {
541 public:
542 CodeCacheDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
543 static const char* name() {
544 return "Compiler.codecache";
545 }
546 static const char* description() {
547 return "Print code cache layout and bounds.";
548 }
549 static const char* impact() {
550 return "Low";
551 }
552 virtual void execute(DCmdSource source, TRAPS);
553 };
554
555 //---< BEGIN >--- CodeHeap State Analytics.
556 class CodeHeapAnalyticsDCmd : public DCmdWithParser {
557 protected:
558 DCmdArgument<char*> _function;
559 DCmdArgument<jlong> _granularity;
560 public:
561 static int num_arguments() { return 2; }
562 CodeHeapAnalyticsDCmd(outputStream* output, bool heap);
563 static const char* name() {
564 return "Compiler.CodeHeap_Analytics";
565 }
566 static const char* description() {
567 return "Print CodeHeap analytics";
568 }
569 static const char* impact() {
570 return "Low: Depends on code heap size and content. "
571 "Holds CodeCache_lock during analysis step, usually sub-second duration.";
572 }
573 virtual void execute(DCmdSource source, TRAPS);
574 };
575 //---< END >--- CodeHeap State Analytics.
576
577 class CompilerDirectivesPrintDCmd : public DCmd {
578 public:
579 CompilerDirectivesPrintDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
580 static const char* name() {
581 return "Compiler.directives_print";
582 }
583 static const char* description() {
584 return "Print all active compiler directives.";
585 }
586 static const char* impact() {
587 return "Low";
588 }
589 virtual void execute(DCmdSource source, TRAPS);
590 };
591
592 class CompilerDirectivesRemoveDCmd : public DCmd {
593 public:
594 CompilerDirectivesRemoveDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
595 static const char* name() {
596 return "Compiler.directives_remove";
597 }
598 static const char* description() {
599 return "Remove latest added compiler directive.";
600 }
601 static const char* impact() {
602 return "Low";
603 }
604 virtual void execute(DCmdSource source, TRAPS);
605 };
606
607 class CompilerDirectivesAddDCmd : public DCmdWithParser {
608 protected:
609 DCmdArgument<char*> _filename;
610 public:
611 static int num_arguments() { return 1; }
612 CompilerDirectivesAddDCmd(outputStream* output, bool heap);
613 static const char* name() {
614 return "Compiler.directives_add";
615 }
616 static const char* description() {
617 return "Add compiler directives from file.";
618 }
619 static const char* impact() {
620 return "Low";
621 }
622 virtual void execute(DCmdSource source, TRAPS);
623 };
624
625 class CompilerDirectivesClearDCmd : public DCmd {
626 public:
627 CompilerDirectivesClearDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
628 static const char* name() {
629 return "Compiler.directives_clear";
630 }
631 static const char* description() {
632 return "Remove all compiler directives.";
633 }
634 static const char* impact() {
635 return "Low";
636 }
637 virtual void execute(DCmdSource source, TRAPS);
638 };
639
640 ///////////////////////////////////////////////////////////////////////
641 //
642 // jcmd command support for symbol table, string table and system dictionary dumping:
643 // VM.symboltable -verbose: for dumping the symbol table
644 // VM.stringtable -verbose: for dumping the string table
645 // VM.systemdictionary -verbose: for dumping the system dictionary table
646 //
647 class VM_DumpHashtable : public VM_Operation {
648 private:
649 outputStream* _out;
650 int _which;
651 bool _verbose;
652 public:
653 enum {
654 DumpSymbols = 1 << 0,
655 DumpStrings = 1 << 1,
656 DumpSysDict = 1 << 2 // not implemented yet
657 };
658 VM_DumpHashtable(outputStream* out, int which, bool verbose) {
659 _out = out;
660 _which = which;
661 _verbose = verbose;
662 }
663
664 virtual VMOp_Type type() const { return VMOp_DumpHashtable; }
665
666 virtual void doit() {
667 switch (_which) {
668 case DumpSymbols:
669 SymbolTable::dump(_out, _verbose);
670 break;
671 case DumpStrings:
672 StringTable::dump(_out, _verbose);
673 break;
674 case DumpSysDict:
675 SystemDictionary::dump(_out, _verbose);
676 break;
677 default:
678 ShouldNotReachHere();
679 }
680 }
681 };
682
683 class SymboltableDCmd : public DCmdWithParser {
684 protected:
685 DCmdArgument<bool> _verbose;
686 public:
687 static int num_arguments() { return 1; }
688 SymboltableDCmd(outputStream* output, bool heap);
689 static const char* name() {
690 return "VM.symboltable";
691 }
692 static const char* description() {
693 return "Dump symbol table.";
694 }
695 static const char* impact() {
696 return "Medium: Depends on Java content.";
697 }
698 virtual void execute(DCmdSource source, TRAPS);
699 };
700
701 class StringtableDCmd : public DCmdWithParser {
702 protected:
703 DCmdArgument<bool> _verbose;
704 public:
705 static int num_arguments() { return 1; }
706 StringtableDCmd(outputStream* output, bool heap);
707 static const char* name() {
708 return "VM.stringtable";
709 }
710 static const char* description() {
711 return "Dump string table.";
712 }
713 static const char* impact() {
714 return "Medium: Depends on Java content.";
715 }
716 virtual void execute(DCmdSource source, TRAPS);
717 };
718
719 class SystemDictionaryDCmd : public DCmdWithParser {
720 protected:
721 DCmdArgument<bool> _verbose;
722 public:
723 static int num_arguments() { return 1; }
724 SystemDictionaryDCmd(outputStream* output, bool heap);
725 static const char* name() {
726 return "VM.systemdictionary";
727 }
728 static const char* description() {
729 return "Prints the statistics for dictionary hashtable sizes and bucket length";
730 }
731 static const char* impact() {
732 return "Medium: Depends on Java content.";
733 }
734 virtual void execute(DCmdSource source, TRAPS);
735 };
736
737 class ClassesDCmd : public DCmdWithParser {
738 protected:
739 DCmdArgument<bool> _verbose;
740 public:
741 static int num_arguments() { return 1; }
742 ClassesDCmd(outputStream* output, bool heap);
743 static const char* name() {
744 return "VM.classes";
745 }
746 static const char* description() {
747 return "Print all loaded classes";
748 }
749 static const char* impact() {
750 return "Medium: Depends on number of loaded classes.";
751 }
752 virtual void execute(DCmdSource source, TRAPS);
753 };
754
755 class EventLogDCmd : public DCmdWithParser {
756 protected:
757 DCmdArgument<char*> _log;
758 DCmdArgument<jlong> _max;
759 public:
760 static int num_arguments() { return 2; }
761 EventLogDCmd(outputStream* output, bool heap);
762 static const char* name() {
763 return "VM.events";
764 }
765 static const char* description() {
766 return "Print VM event logs";
767 }
768 static const char* impact() {
769 return "Low: Depends on event log size. ";
770 }
771 virtual void execute(DCmdSource source, TRAPS);
772 };
773
774 class ThreadDumpToFileDCmd : public DCmdWithParser {
775 private:
776 void dumpToFile(Symbol* name, Symbol* signature, const char* path, bool overwrite, TRAPS);
777 protected:
778 DCmdArgument<bool> _overwrite;
779 DCmdArgument<char*> _format;
780 DCmdArgument<char*> _filepath;
781 public:
782 static int num_arguments() { return 3; }
783 ThreadDumpToFileDCmd(outputStream *output, bool heap);
784 static const char *name() {
785 return "Thread.dump_to_file";
786 }
787 static const char *description() {
788 return "Dump all threads, with stack traces, "
789 "to a file in plain text or JSON format.";
790 }
791 static const char* impact() {
792 return "Medium: Depends on the number of threads.";
793 }
794 virtual void execute(DCmdSource source, TRAPS);
795 };
796
797 class VThreadSchedulerDCmd : public DCmd {
798 public:
799 VThreadSchedulerDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
800 static const char* name() {
801 return "Thread.vthread_scheduler";
802 }
803 static const char* description() {
804 return "Print the virtual thread scheduler, and the delayed task schedulers that support "
805 "virtual threads doing timed operations.";
806 }
807 static const char* impact() { return "Low"; }
808 virtual void execute(DCmdSource source, TRAPS);
809 };
810
811 class VThreadPollersDCmd : public DCmd {
812 public:
813 VThreadPollersDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
814 static const char* name() {
815 return "Thread.vthread_pollers";
816 }
817 static const char* description() {
818 return "Print the I/O pollers that support virtual threads doing blocking network I/O operations.";
819 }
820 static const char* impact() { return "Low"; }
821 virtual void execute(DCmdSource source, TRAPS);
822 };
823
824 class CompilationMemoryStatisticDCmd: public DCmdWithParser {
825 protected:
826 DCmdArgument<bool> _verbose;
827 DCmdArgument<bool> _legend;
828 DCmdArgument<MemorySizeArgument> _minsize;
829 public:
830 static int num_arguments() { return 3; }
831 CompilationMemoryStatisticDCmd(outputStream* output, bool heap);
832 static const char* name() {
833 return "Compiler.memory";
834 }
835 static const char* description() {
836 return "Print compilation footprint";
837 }
838 static const char* impact() {
839 return "Medium: Pause time depends on number of compiled methods";
840 }
841 virtual void execute(DCmdSource source, TRAPS);
842 };
843
844 #if defined(LINUX) || defined(_WIN64) || defined(__APPLE__)
845
846 class SystemMapDCmd : public DCmd {
847 public:
848 SystemMapDCmd(outputStream* output, bool heap);
849 static const char* name() { return "System.map"; }
850 static const char* description() {
851 return "Prints an annotated process memory map of the VM process (linux, Windows and MacOS only).";
852 }
853 static const char* impact() { return "Medium; can be high for very large java heaps."; }
854 virtual void execute(DCmdSource source, TRAPS);
855 };
856
857 class SystemDumpMapDCmd : public DCmdWithParser {
858 DCmdArgument<char*> _filename;
859 public:
860 static int num_arguments() { return 1; }
861 SystemDumpMapDCmd(outputStream* output, bool heap);
862 static const char* name() { return "System.dump_map"; }
863 static const char* description() {
864 return "Dumps an annotated process memory map to an output file (linux, Windows and MacOS only).";
865 }
866 static const char* impact() { return "Medium; can be high for very large java heaps."; }
867 virtual void execute(DCmdSource source, TRAPS);
868 };
869
870 #endif // LINUX, WINDOWS or MACOS
871
872 #endif // SHARE_SERVICES_DIAGNOSTICCOMMAND_HPP