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