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