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 static const JavaPermission permission() {
68 JavaPermission p = {"java.util.PropertyPermission",
69 "java.vm.version", "read"};
70 return p;
71 }
72 virtual void execute(DCmdSource source, TRAPS);
73 };
74
75 class CommandLineDCmd : public DCmd {
76 public:
77 CommandLineDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
78 static const char* name() { return "VM.command_line"; }
79 static const char* description() {
80 return "Print the command line used to start this VM instance.";
81 }
82 static const char* impact() { return "Low"; }
83 static const JavaPermission permission() {
84 JavaPermission p = {"java.lang.management.ManagementPermission",
85 "monitor", nullptr};
86 return p;
87 }
88 virtual void execute(DCmdSource source, TRAPS) {
89 Arguments::print_on(_output);
90 }
91 };
92
93 // See also: get_system_properties in attachListener.cpp
94 class PrintSystemPropertiesDCmd : public DCmd {
95 public:
96 PrintSystemPropertiesDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
97 static const char* name() { return "VM.system_properties"; }
98 static const char* description() {
99 return "Print system properties.";
100 }
101 static const char* impact() {
102 return "Low";
103 }
104 static const JavaPermission permission() {
105 JavaPermission p = {"java.util.PropertyPermission",
106 "*", "read"};
107 return p;
108 }
109 virtual void execute(DCmdSource source, TRAPS);
110 };
111
112 // See also: print_flag in attachListener.cpp
113 class PrintVMFlagsDCmd : public DCmdWithParser {
114 protected:
115 DCmdArgument<bool> _all;
116 public:
117 static int num_arguments() { return 1; }
118 PrintVMFlagsDCmd(outputStream* output, bool heap);
119 static const char* name() { return "VM.flags"; }
120 static const char* description() {
121 return "Print VM flag options and their current values.";
122 }
123 static const char* impact() {
124 return "Low";
125 }
126 static const JavaPermission permission() {
127 JavaPermission p = {"java.lang.management.ManagementPermission",
128 "monitor", nullptr};
129 return p;
130 }
131 virtual void execute(DCmdSource source, TRAPS);
132 };
133
134 class SetVMFlagDCmd : public DCmdWithParser {
135 protected:
136 DCmdArgument<char*> _flag;
137 DCmdArgument<char*> _value;
138
139 public:
140 static int num_arguments() { return 2; }
141 SetVMFlagDCmd(outputStream* output, bool heap);
142 static const char* name() { return "VM.set_flag"; }
143 static const char* description() {
144 return "Sets VM flag option using the provided value.";
145 }
146 static const char* impact() {
147 return "Low";
148 }
149 static const JavaPermission permission() {
150 JavaPermission p = {"java.lang.management.ManagementPermission",
151 "control", nullptr};
152 return p;
153 }
154 virtual void execute(DCmdSource source, TRAPS);
155 };
156
157 class JVMTIDataDumpDCmd : public DCmd {
158 public:
159 JVMTIDataDumpDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
160 static const char* name() { return "JVMTI.data_dump"; }
161 static const char* description() {
162 return "Signal the JVM to do a data-dump request for JVMTI.";
163 }
164 static const char* impact() {
165 return "High";
166 }
167 static const JavaPermission permission() {
168 JavaPermission p = {"java.lang.management.ManagementPermission",
169 "monitor", nullptr};
170 return p;
171 }
172 virtual void execute(DCmdSource source, TRAPS);
173 };
174
175 #if INCLUDE_SERVICES
176 #if INCLUDE_JVMTI
177 class JVMTIAgentLoadDCmd : public DCmdWithParser {
178 protected:
179 DCmdArgument<char*> _libpath;
180 DCmdArgument<char*> _option;
181 public:
182 static int num_arguments() { return 2; }
183 JVMTIAgentLoadDCmd(outputStream* output, bool heap);
184 static const char* name() { return "JVMTI.agent_load"; }
185 static const char* description() {
186 return "Load JVMTI native agent.";
187 }
188 static const char* impact() { return "Low"; }
189 static const JavaPermission permission() {
190 JavaPermission p = {"java.lang.management.ManagementPermission",
191 "control", nullptr};
192 return p;
193 }
194 virtual void execute(DCmdSource source, TRAPS);
195 };
196 #endif // INCLUDE_JVMTI
197 #endif // INCLUDE_SERVICES
198
199 class VMDynamicLibrariesDCmd : public DCmd {
200 public:
201 VMDynamicLibrariesDCmd(outputStream* output, bool heap);
202 static const char* name() {
203 return "VM.dynlibs";
204 }
205 static const char* description() {
206 return "Print loaded dynamic libraries.";
207 }
208 static const char* impact() {
209 return "Low";
210 }
211 static const JavaPermission permission() {
212 JavaPermission p = {"java.lang.management.ManagementPermission",
213 "monitor", nullptr};
214 return p;
215 }
216 virtual void execute(DCmdSource source, TRAPS);
217 };
218
219 class VMUptimeDCmd : public DCmdWithParser {
220 protected:
221 DCmdArgument<bool> _date;
222 public:
223 static int num_arguments() { return 1; }
224 VMUptimeDCmd(outputStream* output, bool heap);
225 static const char* name() { return "VM.uptime"; }
226 static const char* description() {
227 return "Print VM uptime.";
228 }
229 static const char* impact() {
230 return "Low";
231 }
232 virtual void execute(DCmdSource source, TRAPS);
233 };
234
235 class VMInfoDCmd : public DCmd {
236 public:
237 VMInfoDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
238 static const char* name() { return "VM.info"; }
239 static const char* description() {
240 return "Print information about JVM environment and status.";
241 }
242 static const char* impact() { return "Low"; }
243 static const JavaPermission permission() {
244 JavaPermission p = {"java.lang.management.ManagementPermission",
245 "monitor", nullptr};
246 return p;
247 }
248 virtual void execute(DCmdSource source, TRAPS);
249 };
250
251 class SystemGCDCmd : public DCmd {
252 public:
253 SystemGCDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
254 static const char* name() { return "GC.run"; }
255 static const char* description() {
256 return "Call java.lang.System.gc().";
257 }
258 static const char* impact() {
259 return "Medium: Depends on Java heap size and content.";
260 }
261 virtual void execute(DCmdSource source, TRAPS);
262 };
263
264 class RunFinalizationDCmd : public DCmd {
265 public:
266 RunFinalizationDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
267 static const char* name() { return "GC.run_finalization"; }
268 static const char* description() {
269 return "Call java.lang.System.runFinalization().";
270 }
271 static const char* impact() {
272 return "Medium: Depends on Java content.";
273 }
274 virtual void execute(DCmdSource source, TRAPS);
275 };
276
277 class HeapInfoDCmd : public DCmd {
278 public:
279 HeapInfoDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
280 static const char* name() { return "GC.heap_info"; }
281 static const char* description() {
282 return "Provide generic Java heap information.";
283 }
284 static const char* impact() {
285 return "Medium";
286 }
287 static const JavaPermission permission() {
288 JavaPermission p = {"java.lang.management.ManagementPermission",
289 "monitor", nullptr};
290 return p;
291 }
292
293 virtual void execute(DCmdSource source, TRAPS);
294 };
295
296 class FinalizerInfoDCmd : public DCmd {
297 public:
298 FinalizerInfoDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
299 static const char* name() { return "GC.finalizer_info"; }
300 static const char* description() {
301 return "Provide information about Java finalization queue.";
302 }
303 static const char* impact() {
304 return "Medium";
305 }
306 static const JavaPermission permission() {
307 JavaPermission p = {"java.lang.management.ManagementPermission",
308 "monitor", nullptr};
309 return p;
310 }
311
312 virtual void execute(DCmdSource source, TRAPS);
313 };
314
315 #if INCLUDE_SERVICES // Heap dumping supported
316 // See also: dump_heap in attachListener.cpp
317 class HeapDumpDCmd : public DCmdWithParser {
318 protected:
319 DCmdArgument<char*> _filename;
320 DCmdArgument<bool> _all;
321 DCmdArgument<jlong> _gzip;
322 DCmdArgument<bool> _overwrite;
323 DCmdArgument<jlong> _parallel;
324 public:
325 static int num_arguments() { return 5; }
326 HeapDumpDCmd(outputStream* output, bool heap);
327 static const char* name() {
328 return "GC.heap_dump";
329 }
330 static const char* description() {
331 return "Generate a HPROF format dump of the Java heap.";
332 }
333 static const char* impact() {
334 return "High: Depends on Java heap size and content. "
335 "Request a full GC unless the '-all' option is specified.";
336 }
337 static const JavaPermission permission() {
338 JavaPermission p = {"java.lang.management.ManagementPermission",
339 "monitor", nullptr};
340 return p;
341 }
342 virtual void execute(DCmdSource source, TRAPS);
343 };
344 #endif // INCLUDE_SERVICES
345
346 // See also: inspectheap in attachListener.cpp
347 class ClassHistogramDCmd : public DCmdWithParser {
348 protected:
349 DCmdArgument<bool> _all;
350 DCmdArgument<jlong> _parallel_thread_num;
351 public:
352 static int num_arguments() { return 2; }
353 ClassHistogramDCmd(outputStream* output, bool heap);
354 static const char* name() {
355 return "GC.class_histogram";
356 }
357 static const char* description() {
358 return "Provide statistics about the Java heap usage.";
359 }
360 static const char* impact() {
361 return "High: Depends on Java heap size and content.";
362 }
363 static const JavaPermission permission() {
364 JavaPermission p = {"java.lang.management.ManagementPermission",
365 "monitor", nullptr};
366 return p;
367 }
368 virtual void execute(DCmdSource source, TRAPS);
369 };
370
371 class ClassHierarchyDCmd : public DCmdWithParser {
372 protected:
373 DCmdArgument<bool> _print_interfaces; // true if inherited interfaces should be printed.
374 DCmdArgument<bool> _print_subclasses; // true if subclasses of the specified classname should be printed.
375 DCmdArgument<char*> _classname; // Optional single class name whose hierarchy should be printed.
376 public:
377 static int num_arguments() { return 3; }
378 ClassHierarchyDCmd(outputStream* output, bool heap);
379 static const char* name() {
380 return "VM.class_hierarchy";
381 }
382 static const char* description() {
383 return "Print a list of all loaded classes, indented to show the class hierarchy. "
384 "The name of each class is followed by the ClassLoaderData* of its ClassLoader, "
385 "or \"null\" if loaded by the bootstrap class loader.";
386 }
387 static const char* impact() {
388 return "Medium: Depends on number of loaded classes.";
389 }
390 static const JavaPermission permission() {
391 JavaPermission p = {"java.lang.management.ManagementPermission",
392 "monitor", nullptr};
393 return p;
394 }
395 virtual void execute(DCmdSource source, TRAPS);
396 };
397
398 class PrintClassLayoutDCmd : public DCmdWithParser {
399 protected:
400 DCmdArgument<char*> _classname; // lass name whose layout should be printed.
401 public:
402 PrintClassLayoutDCmd(outputStream* output, bool heap);
403 static const char* name() {
404 return "VM.class_print_layout";
405 }
406 static const char* description() {
407 return "Print the layout of an instance of a class, including flat fields. "
408 "The name of each class is followed by the ClassLoaderData* of its ClassLoader, "
409 "or \"null\" if loaded by the bootstrap class loader.";
410 }
411 static const char* impact() {
412 return "Medium: Depends on number of loaded classes.";
413 }
414 static const JavaPermission permission() {
415 JavaPermission p = {"java.lang.management.ManagementPermission",
416 "monitor", nullptr};
417 return p;
418 }
419 static int num_arguments();
420 virtual void execute(DCmdSource source, TRAPS);
421 };
422
423 #if INCLUDE_CDS
424 class DumpSharedArchiveDCmd: public DCmdWithParser {
425 protected:
426 DCmdArgument<char*> _suboption; // option of VM.cds
427 DCmdArgument<char*> _filename; // file name, optional
428 public:
429 static int num_arguments() { return 2; }
430 DumpSharedArchiveDCmd(outputStream* output, bool heap);
431 static const char* name() {
432 return "VM.cds";
433 }
434 static const char* description() {
435 return "Dump a static or dynamic shared archive including all shareable classes";
436 }
437 static const char* impact() {
438 return "Medium: Pause time depends on number of loaded classes";
439 }
440 static const JavaPermission permission() {
441 JavaPermission p = {"java.lang.management.ManagementPermission",
442 "monitor", nullptr};
443 return p;
444 }
445 virtual void execute(DCmdSource source, TRAPS);
446 };
447 #endif // INCLUDE_CDS
448
449 // See also: thread_dump in attachListener.cpp
450 class ThreadDumpDCmd : public DCmdWithParser {
451 protected:
452 DCmdArgument<bool> _locks;
453 DCmdArgument<bool> _extended;
454 public:
455 static int num_arguments() { return 2; }
456 ThreadDumpDCmd(outputStream* output, bool heap);
457 static const char* name() { return "Thread.print"; }
458 static const char* description() {
459 return "Print all threads with stacktraces.";
460 }
461 static const char* impact() {
462 return "Medium: Depends on the number of threads.";
463 }
464 static const JavaPermission permission() {
465 JavaPermission p = {"java.lang.management.ManagementPermission",
466 "monitor", nullptr};
467 return p;
468 }
469 virtual void execute(DCmdSource source, TRAPS);
470 };
471
472 // Enhanced JMX Agent support
473
474 class JMXStartRemoteDCmd : public DCmdWithParser {
475
476 // Explicitly list all properties that could be
477 // passed to Agent.startRemoteManagementAgent()
478 // com.sun.management is omitted
479
480 DCmdArgument<char *> _config_file;
481 DCmdArgument<char *> _jmxremote_host;
482 DCmdArgument<char *> _jmxremote_port;
483 DCmdArgument<char *> _jmxremote_rmi_port;
484 DCmdArgument<char *> _jmxremote_ssl;
485 DCmdArgument<char *> _jmxremote_registry_ssl;
486 DCmdArgument<char *> _jmxremote_authenticate;
487 DCmdArgument<char *> _jmxremote_password_file;
488 DCmdArgument<char *> _jmxremote_access_file;
489 DCmdArgument<char *> _jmxremote_login_config;
490 DCmdArgument<char *> _jmxremote_ssl_enabled_cipher_suites;
491 DCmdArgument<char *> _jmxremote_ssl_enabled_protocols;
492 DCmdArgument<char *> _jmxremote_ssl_need_client_auth;
493 DCmdArgument<char *> _jmxremote_ssl_config_file;
494
495 // JDP support
496 // Keep autodiscovery char* not bool to pass true/false
497 // as property value to java level.
498 DCmdArgument<char *> _jmxremote_autodiscovery;
499 DCmdArgument<jlong> _jdp_port;
500 DCmdArgument<char *> _jdp_address;
501 DCmdArgument<char *> _jdp_source_addr;
502 DCmdArgument<jlong> _jdp_ttl;
503 DCmdArgument<jlong> _jdp_pause;
504 DCmdArgument<char *> _jdp_name;
505
506 public:
507 static int num_arguments() { return 21; }
508
509 JMXStartRemoteDCmd(outputStream *output, bool heap_allocated);
510
511 static const char *name() {
512 return "ManagementAgent.start";
513 }
514
515 static const char *description() {
516 return "Start remote management agent.";
517 }
518
519 virtual void execute(DCmdSource source, TRAPS);
520 };
521
522 class JMXStartLocalDCmd : public DCmd {
523
524 // Explicitly request start of local agent,
525 // it will not be started by start dcmd
526
527
528 public:
529 JMXStartLocalDCmd(outputStream *output, bool heap_allocated);
530
531 static const char *name() {
532 return "ManagementAgent.start_local";
533 }
534
535 static const char *description() {
536 return "Start local management agent.";
537 }
538
539 virtual void execute(DCmdSource source, TRAPS);
540
541 };
542
543 class JMXStopRemoteDCmd : public DCmd {
544 public:
545 JMXStopRemoteDCmd(outputStream *output, bool heap_allocated) :
546 DCmd(output, heap_allocated) {
547 // Do Nothing
548 }
549
550 static const char *name() {
551 return "ManagementAgent.stop";
552 }
553
554 static const char *description() {
555 return "Stop remote management agent.";
556 }
557
558 virtual void execute(DCmdSource source, TRAPS);
559 };
560
561 // Print the JMX system status
562 class JMXStatusDCmd : public DCmd {
563 public:
564 JMXStatusDCmd(outputStream *output, bool heap_allocated);
565
566 static const char *name() {
567 return "ManagementAgent.status";
568 }
569
570 static const char *description() {
571 return "Print the management agent status.";
572 }
573
574 static const JavaPermission permission() {
575 JavaPermission p = {"java.lang.management.ManagementPermission",
576 "monitor", nullptr};
577 return p;
578 }
579
580 virtual void execute(DCmdSource source, TRAPS);
581
582 };
583
584 class CompileQueueDCmd : public DCmd {
585 public:
586 CompileQueueDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
587 static const char* name() {
588 return "Compiler.queue";
589 }
590 static const char* description() {
591 return "Print methods queued for compilation.";
592 }
593 static const char* impact() {
594 return "Low";
595 }
596 static const JavaPermission permission() {
597 JavaPermission p = {"java.lang.management.ManagementPermission",
598 "monitor", nullptr};
599 return p;
600 }
601 virtual void execute(DCmdSource source, TRAPS);
602 };
603
604 #ifdef LINUX
605 class PerfMapDCmd : public DCmdWithParser {
606 protected:
607 DCmdArgument<char*> _filename;
608 public:
609 static int num_arguments() { return 1; }
610 PerfMapDCmd(outputStream* output, bool heap);
611 static const char* name() {
612 return "Compiler.perfmap";
613 }
614 static const char* description() {
615 return "Write map file for Linux perf tool.";
616 }
617 static const char* impact() {
618 return "Low";
619 }
620 static const JavaPermission permission() {
621 JavaPermission p = {"java.lang.management.ManagementPermission",
622 "monitor", nullptr};
623 return p;
624 }
625 virtual void execute(DCmdSource source, TRAPS);
626 };
627 #endif // LINUX
628
629 class CodeListDCmd : public DCmd {
630 public:
631 CodeListDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
632 static const char* name() {
633 return "Compiler.codelist";
634 }
635 static const char* description() {
636 return "Print all compiled methods in code cache that are alive";
637 }
638 static const char* impact() {
639 return "Medium";
640 }
641 static const JavaPermission permission() {
642 JavaPermission p = {"java.lang.management.ManagementPermission",
643 "monitor", nullptr};
644 return p;
645 }
646 virtual void execute(DCmdSource source, TRAPS);
647 };
648
649 class CodeCacheDCmd : public DCmd {
650 public:
651 CodeCacheDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
652 static const char* name() {
653 return "Compiler.codecache";
654 }
655 static const char* description() {
656 return "Print code cache layout and bounds.";
657 }
658 static const char* impact() {
659 return "Low";
660 }
661 static const JavaPermission permission() {
662 JavaPermission p = {"java.lang.management.ManagementPermission",
663 "monitor", nullptr};
664 return p;
665 }
666 virtual void execute(DCmdSource source, TRAPS);
667 };
668
669 //---< BEGIN >--- CodeHeap State Analytics.
670 class CodeHeapAnalyticsDCmd : public DCmdWithParser {
671 protected:
672 DCmdArgument<char*> _function;
673 DCmdArgument<jlong> _granularity;
674 public:
675 static int num_arguments() { return 2; }
676 CodeHeapAnalyticsDCmd(outputStream* output, bool heap);
677 static const char* name() {
678 return "Compiler.CodeHeap_Analytics";
679 }
680 static const char* description() {
681 return "Print CodeHeap analytics";
682 }
683 static const char* impact() {
684 return "Low: Depends on code heap size and content. "
685 "Holds CodeCache_lock during analysis step, usually sub-second duration.";
686 }
687 static const JavaPermission permission() {
688 JavaPermission p = {"java.lang.management.ManagementPermission",
689 "monitor", nullptr};
690 return p;
691 }
692 virtual void execute(DCmdSource source, TRAPS);
693 };
694 //---< END >--- CodeHeap State Analytics.
695
696 class CompilerDirectivesPrintDCmd : public DCmd {
697 public:
698 CompilerDirectivesPrintDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
699 static const char* name() {
700 return "Compiler.directives_print";
701 }
702 static const char* description() {
703 return "Print all active compiler directives.";
704 }
705 static const char* impact() {
706 return "Low";
707 }
708 static const JavaPermission permission() {
709 JavaPermission p = {"java.lang.management.ManagementPermission",
710 "monitor", nullptr};
711 return p;
712 }
713 virtual void execute(DCmdSource source, TRAPS);
714 };
715
716 class CompilerDirectivesRemoveDCmd : public DCmd {
717 public:
718 CompilerDirectivesRemoveDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
719 static const char* name() {
720 return "Compiler.directives_remove";
721 }
722 static const char* description() {
723 return "Remove latest added compiler directive.";
724 }
725 static const char* impact() {
726 return "Low";
727 }
728 static const JavaPermission permission() {
729 JavaPermission p = {"java.lang.management.ManagementPermission",
730 "control", nullptr};
731 return p;
732 }
733 virtual void execute(DCmdSource source, TRAPS);
734 };
735
736 class CompilerDirectivesAddDCmd : public DCmdWithParser {
737 protected:
738 DCmdArgument<char*> _filename;
739 public:
740 static int num_arguments() { return 1; }
741 CompilerDirectivesAddDCmd(outputStream* output, bool heap);
742 static const char* name() {
743 return "Compiler.directives_add";
744 }
745 static const char* description() {
746 return "Add compiler directives from file.";
747 }
748 static const char* impact() {
749 return "Low";
750 }
751 static const JavaPermission permission() {
752 JavaPermission p = {"java.lang.management.ManagementPermission",
753 "control", nullptr};
754 return p;
755 }
756 virtual void execute(DCmdSource source, TRAPS);
757 };
758
759 class CompilerDirectivesClearDCmd : public DCmd {
760 public:
761 CompilerDirectivesClearDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
762 static const char* name() {
763 return "Compiler.directives_clear";
764 }
765 static const char* description() {
766 return "Remove all compiler directives.";
767 }
768 static const char* impact() {
769 return "Low";
770 }
771 static const JavaPermission permission() {
772 JavaPermission p = {"java.lang.management.ManagementPermission",
773 "control", nullptr};
774 return p;
775 }
776 virtual void execute(DCmdSource source, TRAPS);
777 };
778
779 ///////////////////////////////////////////////////////////////////////
780 //
781 // jcmd command support for symbol table, string table and system dictionary dumping:
782 // VM.symboltable -verbose: for dumping the symbol table
783 // VM.stringtable -verbose: for dumping the string table
784 // VM.systemdictionary -verbose: for dumping the system dictionary table
785 //
786 class VM_DumpHashtable : public VM_Operation {
787 private:
788 outputStream* _out;
789 int _which;
790 bool _verbose;
791 public:
792 enum {
793 DumpSymbols = 1 << 0,
794 DumpStrings = 1 << 1,
795 DumpSysDict = 1 << 2 // not implemented yet
796 };
797 VM_DumpHashtable(outputStream* out, int which, bool verbose) {
798 _out = out;
799 _which = which;
800 _verbose = verbose;
801 }
802
803 virtual VMOp_Type type() const { return VMOp_DumpHashtable; }
804
805 virtual void doit() {
806 switch (_which) {
807 case DumpSymbols:
808 SymbolTable::dump(_out, _verbose);
809 break;
810 case DumpStrings:
811 StringTable::dump(_out, _verbose);
812 break;
813 case DumpSysDict:
814 SystemDictionary::dump(_out, _verbose);
815 break;
816 default:
817 ShouldNotReachHere();
818 }
819 }
820 };
821
822 class SymboltableDCmd : public DCmdWithParser {
823 protected:
824 DCmdArgument<bool> _verbose;
825 public:
826 static int num_arguments() { return 1; }
827 SymboltableDCmd(outputStream* output, bool heap);
828 static const char* name() {
829 return "VM.symboltable";
830 }
831 static const char* description() {
832 return "Dump symbol table.";
833 }
834 static const char* impact() {
835 return "Medium: Depends on Java content.";
836 }
837 static const JavaPermission permission() {
838 JavaPermission p = {"java.lang.management.ManagementPermission",
839 "monitor", nullptr};
840 return p;
841 }
842 virtual void execute(DCmdSource source, TRAPS);
843 };
844
845 class StringtableDCmd : public DCmdWithParser {
846 protected:
847 DCmdArgument<bool> _verbose;
848 public:
849 static int num_arguments() { return 1; }
850 StringtableDCmd(outputStream* output, bool heap);
851 static const char* name() {
852 return "VM.stringtable";
853 }
854 static const char* description() {
855 return "Dump string table.";
856 }
857 static const char* impact() {
858 return "Medium: Depends on Java content.";
859 }
860 static const JavaPermission permission() {
861 JavaPermission p = {"java.lang.management.ManagementPermission",
862 "monitor", nullptr};
863 return p;
864 }
865 virtual void execute(DCmdSource source, TRAPS);
866 };
867
868 class SystemDictionaryDCmd : public DCmdWithParser {
869 protected:
870 DCmdArgument<bool> _verbose;
871 public:
872 static int num_arguments() { return 1; }
873 SystemDictionaryDCmd(outputStream* output, bool heap);
874 static const char* name() {
875 return "VM.systemdictionary";
876 }
877 static const char* description() {
878 return "Prints the statistics for dictionary hashtable sizes and bucket length";
879 }
880 static const char* impact() {
881 return "Medium: Depends on Java content.";
882 }
883 static const JavaPermission permission() {
884 JavaPermission p = {"java.lang.management.ManagementPermission",
885 "monitor", nullptr};
886 return p;
887 }
888 virtual void execute(DCmdSource source, TRAPS);
889 };
890
891 class ClassesDCmd : public DCmdWithParser {
892 protected:
893 DCmdArgument<bool> _verbose;
894 public:
895 static int num_arguments() { return 1; }
896 ClassesDCmd(outputStream* output, bool heap);
897 static const char* name() {
898 return "VM.classes";
899 }
900 static const char* description() {
901 return "Print all loaded classes";
902 }
903 static const char* impact() {
904 return "Medium: Depends on number of loaded classes.";
905 }
906 static const JavaPermission permission() {
907 JavaPermission p = {"java.lang.management.ManagementPermission",
908 "monitor", nullptr};
909 return p;
910 }
911 virtual void execute(DCmdSource source, TRAPS);
912 };
913
914 #if INCLUDE_JVMTI
915 class DebugOnCmdStartDCmd : public DCmd {
916 public:
917 DebugOnCmdStartDCmd(outputStream* output, bool heap) : DCmd(output, heap) {}
918 static const char* name() {
919 return "VM.start_java_debugging";
920 }
921 static const char* description() {
922 return "Starts up the Java debugging if the jdwp agentlib was enabled with the option onjcmd=y.";
923 }
924 static const char* impact() {
925 return "High: Switches the VM into Java debug mode.";
926 }
927 static const JavaPermission permission() {
928 JavaPermission p = { "java.lang.management.ManagementPermission", "control", nullptr };
929 return p;
930 }
931 virtual void execute(DCmdSource source, TRAPS);
932 };
933 #endif // INCLUDE_JVMTI
934
935 class EventLogDCmd : public DCmdWithParser {
936 protected:
937 DCmdArgument<char*> _log;
938 DCmdArgument<char*> _max;
939 public:
940 static int num_arguments() { return 2; }
941 EventLogDCmd(outputStream* output, bool heap);
942 static const char* name() {
943 return "VM.events";
944 }
945 static const char* description() {
946 return "Print VM event logs";
947 }
948 static const char* impact() {
949 return "Low: Depends on event log size. ";
950 }
951 static const JavaPermission permission() {
952 JavaPermission p = {"java.lang.management.ManagementPermission",
953 "monitor", nullptr};
954 return p;
955 }
956 virtual void execute(DCmdSource source, TRAPS);
957 };
958
959 class ThreadDumpToFileDCmd : public DCmdWithParser {
960 private:
961 void dumpToFile(Symbol* name, Symbol* signature, const char* path, bool overwrite, TRAPS);
962 protected:
963 DCmdArgument<bool> _overwrite;
964 DCmdArgument<char*> _format;
965 DCmdArgument<char*> _filepath;
966 public:
967 static int num_arguments() { return 3; }
968 ThreadDumpToFileDCmd(outputStream *output, bool heap);
969 static const char *name() {
970 return "Thread.dump_to_file";
971 }
972 static const char *description() {
973 return "Dump threads, with stack traces, to a file in plain text or JSON format.";
974 }
975 static const char* impact() {
976 return "Medium: Depends on the number of threads.";
977 }
978 static const JavaPermission permission() {
979 JavaPermission p = {"java.lang.management.ManagementPermission", "monitor", nullptr};
980 return p;
981 }
982 virtual void execute(DCmdSource source, TRAPS);
983 };
984
985 class CompilationMemoryStatisticDCmd: public DCmdWithParser {
986 protected:
987 DCmdArgument<bool> _human_readable;
988 DCmdArgument<MemorySizeArgument> _minsize;
989 public:
990 static int num_arguments() { return 2; }
991 CompilationMemoryStatisticDCmd(outputStream* output, bool heap);
992 static const char* name() {
993 return "Compiler.memory";
994 }
995 static const char* description() {
996 return "Print compilation footprint";
997 }
998 static const char* impact() {
999 return "Medium: Pause time depends on number of compiled methods";
1000 }
1001 static const JavaPermission permission() {
1002 JavaPermission p = {"java.lang.management.ManagementPermission",
1003 "monitor", nullptr};
1004 return p;
1005 }
1006 virtual void execute(DCmdSource source, TRAPS);
1007 };
1008
1009 #ifdef LINUX
1010
1011 class SystemMapDCmd : public DCmd {
1012 public:
1013 SystemMapDCmd(outputStream* output, bool heap);
1014 static const char* name() { return "System.map"; }
1015 static const char* description() {
1016 return "Prints an annotated process memory map of the VM process (linux only).";
1017 }
1018 static const char* impact() { return "Medium; can be high for very large java heaps."; }
1019 static const JavaPermission permission() {
1020 JavaPermission p = {"java.lang.management.ManagementPermission",
1021 "control", nullptr};
1022 return p;
1023 }
1024 virtual void execute(DCmdSource source, TRAPS);
1025 };
1026
1027 class SystemDumpMapDCmd : public DCmdWithParser {
1028 DCmdArgument<char*> _filename;
1029 public:
1030 static int num_arguments() { return 1; }
1031 SystemDumpMapDCmd(outputStream* output, bool heap);
1032 static const char* name() { return "System.dump_map"; }
1033 static const char* description() {
1034 return "Dumps an annotated process memory map to an output file (linux only).";
1035 }
1036 static const char* impact() { return "Medium; can be high for very large java heaps."; }
1037 static const JavaPermission permission() {
1038 JavaPermission p = {"java.lang.management.ManagementPermission",
1039 "control", nullptr};
1040 return p;
1041 }
1042 virtual void execute(DCmdSource source, TRAPS);
1043 };
1044
1045 #endif // LINUX
1046
1047 #endif // SHARE_SERVICES_DIAGNOSTICCOMMAND_HPP