1 /*
2 * Copyright (c) 2011, 2018, 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 #include "precompiled.hpp"
26 #include "jvm.h"
27 #include "classfile/classLoaderStats.hpp"
28 #include "classfile/compactHashtable.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "compiler/directivesParser.hpp"
31 #include "gc/shared/vmGCOperations.hpp"
32 #include "memory/metaspace/metaspaceDCmd.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "oops/objArrayOop.inline.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "oops/typeArrayOop.inline.hpp"
37 #include "runtime/flags/jvmFlag.hpp"
38 #include "runtime/handles.inline.hpp"
39 #include "runtime/javaCalls.hpp"
40 #include "runtime/os.hpp"
41 #include "services/diagnosticArgument.hpp"
42 #include "services/diagnosticCommand.hpp"
43 #include "services/diagnosticFramework.hpp"
44 #include "services/heapDumper.hpp"
45 #include "services/management.hpp"
46 #include "services/writeableFlags.hpp"
47 #include "utilities/debug.hpp"
48 #include "utilities/formatBuffer.hpp"
49 #include "utilities/macros.hpp"
50
51
52 static void loadAgentModule(TRAPS) {
53 ResourceMark rm(THREAD);
54 HandleMark hm(THREAD);
55
56 JavaValue result(T_OBJECT);
57 Handle h_module_name = java_lang_String::create_from_str("jdk.management.agent", CHECK);
58 JavaCalls::call_static(&result,
59 SystemDictionary::module_Modules_klass(),
60 vmSymbols::loadModule_name(),
61 vmSymbols::loadModule_signature(),
62 h_module_name,
63 THREAD);
64 }
65
66 void DCmdRegistrant::register_dcmds(){
67 // Registration of the diagnostic commands
68 // First argument specifies which interfaces will export the command
69 // Second argument specifies if the command is enabled
70 // Third argument specifies if the command is hidden
71 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI
72 | DCmd_Source_MBean;
73 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(full_export, true, false));
74 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(full_export, true, false));
75 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(full_export, true, false));
76 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(full_export, true, false));
77 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(full_export, true, false));
78 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SetVMFlagDCmd>(full_export, true, false));
79 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMDynamicLibrariesDCmd>(full_export, true, false));
80 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(full_export, true, false));
81 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMInfoDCmd>(full_export, true, false));
82 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(full_export, true, false));
83 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(full_export, true, false));
84 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapInfoDCmd>(full_export, true, false));
85 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<FinalizerInfoDCmd>(full_export, true, false));
86 #if INCLUDE_SERVICES
87 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false));
88 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(full_export, true, false));
89 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(full_export, true, false));
90 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemDictionaryDCmd>(full_export, true, false));
91 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHierarchyDCmd>(full_export, true, false));
92 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SymboltableDCmd>(full_export, true, false));
93 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<StringtableDCmd>(full_export, true, false));
94 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<metaspace::MetaspaceDCmd>(full_export, true, false));
95 #if INCLUDE_JVMTI // Both JVMTI and SERVICES have to be enabled to have this dcmd
96 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIAgentLoadDCmd>(full_export, true, false));
97 #endif // INCLUDE_JVMTI
98 #endif // INCLUDE_SERVICES
99 #if INCLUDE_JVMTI
100 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIDataDumpDCmd>(full_export, true, false));
101 #endif // INCLUDE_JVMTI
102 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false));
103 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false));
104 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false));
105 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false));
106 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false));
107 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<TouchedMethodsDCmd>(full_export, true, false));
108 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeHeapAnalyticsDCmd>(full_export, true, false));
109
110 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesPrintDCmd>(full_export, true, false));
111 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesAddDCmd>(full_export, true, false));
112 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesRemoveDCmd>(full_export, true, false));
113 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesClearDCmd>(full_export, true, false));
114
115 // Enhanced JMX Agent Support
116 // These commands won't be exported via the DiagnosticCommandMBean until an
117 // appropriate permission is created for them
118 uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI;
119 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false));
120 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false));
121 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false));
122 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStatusDCmd>(jmx_agent_export_flags, true,false));
123
124 }
125
126 #ifndef HAVE_EXTRA_DCMD
127 void DCmdRegistrant::register_dcmds_ext(){
128 // Do nothing here
129 }
130 #endif
131
132
133 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
134 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
135 _cmd("command name", "The name of the command for which we want help",
136 "STRING", false) {
137 _dcmdparser.add_dcmd_option(&_all);
138 _dcmdparser.add_dcmd_argument(&_cmd);
139 };
140
141
142 static int compare_strings(const char** s1, const char** s2) {
143 return ::strcmp(*s1, *s2);
144 }
145
146 void HelpDCmd::execute(DCmdSource source, TRAPS) {
147 if (_all.value()) {
148 GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list(source);
149 cmd_list->sort(compare_strings);
150 for (int i = 0; i < cmd_list->length(); i++) {
151 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
152 strlen(cmd_list->at(i)));
153 output()->print_cr("%s%s", factory->name(),
154 factory->is_enabled() ? "" : " [disabled]");
155 output()->print_cr("\t%s", factory->description());
156 output()->cr();
157 factory = factory->next();
158 }
159 } else if (_cmd.has_value()) {
160 DCmd* cmd = NULL;
161 DCmdFactory* factory = DCmdFactory::factory(source, _cmd.value(),
162 strlen(_cmd.value()));
163 if (factory != NULL) {
164 output()->print_cr("%s%s", factory->name(),
165 factory->is_enabled() ? "" : " [disabled]");
166 output()->print_cr("%s", factory->description());
167 output()->print_cr("\nImpact: %s", factory->impact());
168 JavaPermission p = factory->permission();
169 if(p._class != NULL) {
170 if(p._action != NULL) {
171 output()->print_cr("\nPermission: %s(%s, %s)",
172 p._class, p._name == NULL ? "null" : p._name, p._action);
173 } else {
174 output()->print_cr("\nPermission: %s(%s)",
175 p._class, p._name == NULL ? "null" : p._name);
176 }
177 }
178 output()->cr();
179 cmd = factory->create_resource_instance(output());
180 if (cmd != NULL) {
181 DCmdMark mark(cmd);
182 cmd->print_help(factory->name());
183 }
184 } else {
185 output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value());
186 }
187 } else {
188 output()->print_cr("The following commands are available:");
189 GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(source);
190 cmd_list->sort(compare_strings);
191 for (int i = 0; i < cmd_list->length(); i++) {
192 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
193 strlen(cmd_list->at(i)));
194 output()->print_cr("%s%s", factory->name(),
195 factory->is_enabled() ? "" : " [disabled]");
196 factory = factory->_next;
197 }
198 output()->print_cr("\nFor more information about a specific command use 'help <command>'.");
199 }
200 }
201
202 int HelpDCmd::num_arguments() {
203 ResourceMark rm;
204 HelpDCmd* dcmd = new HelpDCmd(NULL, false);
205 if (dcmd != NULL) {
206 DCmdMark mark(dcmd);
207 return dcmd->_dcmdparser.num_arguments();
208 } else {
209 return 0;
210 }
211 }
212
213 void VersionDCmd::execute(DCmdSource source, TRAPS) {
214 output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(),
215 Abstract_VM_Version::vm_release());
216 JDK_Version jdk_version = JDK_Version::current();
217 if (jdk_version.patch_version() > 0) {
218 output()->print_cr("JDK %d.%d.%d.%d", jdk_version.major_version(),
219 jdk_version.minor_version(), jdk_version.security_version(),
220 jdk_version.patch_version());
221 } else {
222 output()->print_cr("JDK %d.%d.%d", jdk_version.major_version(),
223 jdk_version.minor_version(), jdk_version.security_version());
224 }
225 }
226
227 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) :
228 DCmdWithParser(output, heap),
229 _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") {
230 _dcmdparser.add_dcmd_option(&_all);
231 }
232
233 void PrintVMFlagsDCmd::execute(DCmdSource source, TRAPS) {
234 if (_all.value()) {
235 JVMFlag::printFlags(output(), true);
236 } else {
237 JVMFlag::printSetFlags(output());
238 }
239 }
240
241 int PrintVMFlagsDCmd::num_arguments() {
242 ResourceMark rm;
243 PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false);
244 if (dcmd != NULL) {
245 DCmdMark mark(dcmd);
246 return dcmd->_dcmdparser.num_arguments();
247 } else {
248 return 0;
249 }
250 }
251
252 SetVMFlagDCmd::SetVMFlagDCmd(outputStream* output, bool heap) :
253 DCmdWithParser(output, heap),
254 _flag("flag name", "The name of the flag we want to set",
255 "STRING", true),
256 _value("string value", "The value we want to set", "STRING", false) {
257 _dcmdparser.add_dcmd_argument(&_flag);
258 _dcmdparser.add_dcmd_argument(&_value);
259 }
260
261 void SetVMFlagDCmd::execute(DCmdSource source, TRAPS) {
262 const char* val = NULL;
263 if (_value.value() != NULL) {
264 val = _value.value();
265 }
266
267 FormatBuffer<80> err_msg("%s", "");
268 int ret = WriteableFlags::set_flag(_flag.value(), val, JVMFlag::MANAGEMENT, err_msg);
269
270 if (ret != JVMFlag::SUCCESS) {
271 output()->print_cr("%s", err_msg.buffer());
272 }
273 }
274
275 int SetVMFlagDCmd::num_arguments() {
276 ResourceMark rm;
277 SetVMFlagDCmd* dcmd = new SetVMFlagDCmd(NULL, false);
278 if (dcmd != NULL) {
279 DCmdMark mark(dcmd);
280 return dcmd->_dcmdparser.num_arguments();
281 } else {
282 return 0;
283 }
284 }
285
286 void JVMTIDataDumpDCmd::execute(DCmdSource source, TRAPS) {
287 if (JvmtiExport::should_post_data_dump()) {
288 JvmtiExport::post_data_dump();
289 }
290 }
291
292 #if INCLUDE_SERVICES
293 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) :
294 DCmdWithParser(output, heap),
295 _libpath("library path", "Absolute path of the JVMTI agent to load.",
296 "STRING", true),
297 _option("agent option", "Option string to pass the agent.", "STRING", false) {
298 _dcmdparser.add_dcmd_argument(&_libpath);
299 _dcmdparser.add_dcmd_argument(&_option);
300 }
301
302 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) {
303
304 if (_libpath.value() == NULL) {
305 output()->print_cr("JVMTI.agent_load dcmd needs library path.");
306 return;
307 }
308
309 char *suffix = strrchr(_libpath.value(), '.');
310 bool is_java_agent = (suffix != NULL) && (strncmp(".jar", suffix, 4) == 0);
311
312 if (is_java_agent) {
313 if (_option.value() == NULL) {
314 JvmtiExport::load_agent_library("instrument", "false",
315 _libpath.value(), output());
316 } else {
317 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2;
318 if (opt_len > 4096) {
319 output()->print_cr("JVMTI agent attach failed: Options is too long.");
320 return;
321 }
322
323 char *opt = (char *)os::malloc(opt_len, mtInternal);
324 if (opt == NULL) {
325 output()->print_cr("JVMTI agent attach failed: "
326 "Could not allocate " SIZE_FORMAT " bytes for argument.",
327 opt_len);
328 return;
329 }
330
331 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value());
332 JvmtiExport::load_agent_library("instrument", "false", opt, output());
333
334 os::free(opt);
335 }
336 } else {
337 JvmtiExport::load_agent_library(_libpath.value(), "true",
338 _option.value(), output());
339 }
340 }
341
342 int JVMTIAgentLoadDCmd::num_arguments() {
343 ResourceMark rm;
344 JVMTIAgentLoadDCmd* dcmd = new JVMTIAgentLoadDCmd(NULL, false);
345 if (dcmd != NULL) {
346 DCmdMark mark(dcmd);
347 return dcmd->_dcmdparser.num_arguments();
348 } else {
349 return 0;
350 }
351 }
352 #endif // INCLUDE_SERVICES
353
354 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) {
355 // load VMSupport
356 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
357 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
358 InstanceKlass* ik = InstanceKlass::cast(k);
359 if (ik->should_be_initialized()) {
360 ik->initialize(THREAD);
361 }
362 if (HAS_PENDING_EXCEPTION) {
363 java_lang_Throwable::print(PENDING_EXCEPTION, output());
364 output()->cr();
365 CLEAR_PENDING_EXCEPTION;
366 return;
367 }
368
369 // invoke the serializePropertiesToByteArray method
370 JavaValue result(T_OBJECT);
371 JavaCallArguments args;
372
373 Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature();
374 JavaCalls::call_static(&result,
375 ik,
376 vmSymbols::serializePropertiesToByteArray_name(),
377 signature,
378 &args,
379 THREAD);
380 if (HAS_PENDING_EXCEPTION) {
381 java_lang_Throwable::print(PENDING_EXCEPTION, output());
382 output()->cr();
383 CLEAR_PENDING_EXCEPTION;
384 return;
385 }
386
387 // The result should be a [B
388 oop res = (oop)result.get_jobject();
389 assert(res->is_typeArray(), "just checking");
390 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking");
391
392 // copy the bytes to the output stream
393 typeArrayOop ba = typeArrayOop(res);
394 jbyte* addr = typeArrayOop(res)->byte_at_addr(0);
395 output()->print_raw((const char*)addr, ba->length());
396 }
397
398 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) :
399 DCmdWithParser(output, heap),
400 _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") {
401 _dcmdparser.add_dcmd_option(&_date);
402 }
403
404 void VMUptimeDCmd::execute(DCmdSource source, TRAPS) {
405 if (_date.value()) {
406 output()->date_stamp(true, "", ": ");
407 }
408 output()->time_stamp().update_to(tty->time_stamp().ticks());
409 output()->stamp();
410 output()->print_cr(" s");
411 }
412
413 int VMUptimeDCmd::num_arguments() {
414 ResourceMark rm;
415 VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false);
416 if (dcmd != NULL) {
417 DCmdMark mark(dcmd);
418 return dcmd->_dcmdparser.num_arguments();
419 } else {
420 return 0;
421 }
422 }
423
424 void VMInfoDCmd::execute(DCmdSource source, TRAPS) {
425 VMError::print_vm_info(_output);
426 }
427
428 void SystemGCDCmd::execute(DCmdSource source, TRAPS) {
429 Universe::heap()->collect(GCCause::_dcmd_gc_run);
430 }
431
432 void RunFinalizationDCmd::execute(DCmdSource source, TRAPS) {
433 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
434 true, CHECK);
435 JavaValue result(T_VOID);
436 JavaCalls::call_static(&result, k,
437 vmSymbols::run_finalization_name(),
438 vmSymbols::void_method_signature(), CHECK);
439 }
440
441 void HeapInfoDCmd::execute(DCmdSource source, TRAPS) {
442 MutexLocker hl(Heap_lock);
443 Universe::heap()->print_on(output());
444 }
445
446 void FinalizerInfoDCmd::execute(DCmdSource source, TRAPS) {
447 ResourceMark rm;
448
449 Klass* k = SystemDictionary::resolve_or_fail(
450 vmSymbols::finalizer_histogram_klass(), true, CHECK);
451
452 JavaValue result(T_ARRAY);
453
454 // We are calling lang.ref.FinalizerHistogram.getFinalizerHistogram() method
455 // and expect it to return array of FinalizerHistogramEntry as Object[]
456
457 JavaCalls::call_static(&result, k,
458 vmSymbols::get_finalizer_histogram_name(),
459 vmSymbols::void_finalizer_histogram_entry_array_signature(), CHECK);
460
461 objArrayOop result_oop = (objArrayOop) result.get_jobject();
462 if (result_oop->length() == 0) {
463 output()->print_cr("No instances waiting for finalization found");
464 return;
465 }
466
467 oop foop = result_oop->obj_at(0);
468 InstanceKlass* ik = InstanceKlass::cast(foop->klass());
469
470 fieldDescriptor count_fd, name_fd;
471
472 Klass* count_res = ik->find_field(
473 vmSymbols::finalizer_histogram_entry_count_field(), vmSymbols::int_signature(), &count_fd);
474
475 Klass* name_res = ik->find_field(
476 vmSymbols::finalizer_histogram_entry_name_field(), vmSymbols::string_signature(), &name_fd);
477
478 assert(count_res != NULL && name_res != NULL, "Unexpected layout of FinalizerHistogramEntry");
479
480 output()->print_cr("Unreachable instances waiting for finalization");
481 output()->print_cr("#instances class name");
482 output()->print_cr("-----------------------");
483
484 for (int i = 0; i < result_oop->length(); ++i) {
485 oop element_oop = result_oop->obj_at(i);
486 oop str_oop = element_oop->obj_field(name_fd.offset());
487 char *name = java_lang_String::as_utf8_string(str_oop);
488 int count = element_oop->int_field(count_fd.offset());
489 output()->print_cr("%10d %s", count, name);
490 }
491 }
492
493 #if INCLUDE_SERVICES // Heap dumping/inspection supported
494 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
495 DCmdWithParser(output, heap),
496 _filename("filename","Name of the dump file", "STRING",true),
497 _all("-all", "Dump all objects, including unreachable objects",
498 "BOOLEAN", false, "false") {
499 _dcmdparser.add_dcmd_option(&_all);
500 _dcmdparser.add_dcmd_argument(&_filename);
501 }
502
503 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) {
504 // Request a full GC before heap dump if _all is false
505 // This helps reduces the amount of unreachable objects in the dump
506 // and makes it easier to browse.
507 HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
508 int res = dumper.dump(_filename.value());
509 if (res == 0) {
510 output()->print_cr("Heap dump file created");
511 } else {
512 // heap dump failed
513 ResourceMark rm;
514 char* error = dumper.error_as_C_string();
515 if (error == NULL) {
516 output()->print_cr("Dump failed - reason unknown");
517 } else {
518 output()->print_cr("%s", error);
519 }
520 }
521 }
522
523 int HeapDumpDCmd::num_arguments() {
524 ResourceMark rm;
525 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
526 if (dcmd != NULL) {
527 DCmdMark mark(dcmd);
528 return dcmd->_dcmdparser.num_arguments();
529 } else {
530 return 0;
531 }
532 }
533
534 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
535 DCmdWithParser(output, heap),
536 _all("-all", "Inspect all objects, including unreachable objects",
537 "BOOLEAN", false, "false") {
538 _dcmdparser.add_dcmd_option(&_all);
539 }
540
541 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) {
542 VM_GC_HeapInspection heapop(output(),
543 !_all.value() /* request full gc if false */);
544 VMThread::execute(&heapop);
545 }
546
547 int ClassHistogramDCmd::num_arguments() {
548 ResourceMark rm;
549 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
550 if (dcmd != NULL) {
551 DCmdMark mark(dcmd);
552 return dcmd->_dcmdparser.num_arguments();
553 } else {
554 return 0;
555 }
556 }
557
558 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total"
559 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) :
560 DCmdWithParser(output, heap),
561 _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets",
562 "BOOLEAN", false, "false"),
563 _all("-all", "Show all columns",
564 "BOOLEAN", false, "false"),
565 _help("-help", "Show meaning of all the columns",
566 "BOOLEAN", false, "false"),
567 _columns("columns", "Comma-separated list of all the columns to show. "
568 "If not specified, the following columns are shown: " DEFAULT_COLUMNS,
569 "STRING", false) {
570 _dcmdparser.add_dcmd_option(&_all);
571 _dcmdparser.add_dcmd_option(&_csv);
572 _dcmdparser.add_dcmd_option(&_help);
573 _dcmdparser.add_dcmd_argument(&_columns);
574 }
575
576 void ClassStatsDCmd::execute(DCmdSource source, TRAPS) {
577 VM_GC_HeapInspection heapop(output(),
578 true /* request_full_gc */);
579 heapop.set_csv_format(_csv.value());
580 heapop.set_print_help(_help.value());
581 heapop.set_print_class_stats(true);
582 if (_all.value()) {
583 if (_columns.has_value()) {
584 output()->print_cr("Cannot specify -all and individual columns at the same time");
585 return;
586 } else {
587 heapop.set_columns(NULL);
588 }
589 } else {
590 if (_columns.has_value()) {
591 heapop.set_columns(_columns.value());
592 } else {
593 heapop.set_columns(DEFAULT_COLUMNS);
594 }
595 }
596 VMThread::execute(&heapop);
597 }
598
599 int ClassStatsDCmd::num_arguments() {
600 ResourceMark rm;
601 ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false);
602 if (dcmd != NULL) {
603 DCmdMark mark(dcmd);
604 return dcmd->_dcmdparser.num_arguments();
605 } else {
606 return 0;
607 }
608 }
609 #endif // INCLUDE_SERVICES
610
611 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
612 DCmdWithParser(output, heap),
613 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false"),
614 _extended("-e", "print extended thread information", "BOOLEAN", false, "false") {
615 _dcmdparser.add_dcmd_option(&_locks);
616 _dcmdparser.add_dcmd_option(&_extended);
617 }
618
619 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) {
620 // thread stacks
621 VM_PrintThreads op1(output(), _locks.value(), _extended.value());
622 VMThread::execute(&op1);
623
624 // JNI global handles
625 VM_PrintJNI op2(output());
626 VMThread::execute(&op2);
627
628 // Deadlock detection
629 VM_FindDeadlocks op3(output());
630 VMThread::execute(&op3);
631 }
632
633 int ThreadDumpDCmd::num_arguments() {
634 ResourceMark rm;
635 ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false);
636 if (dcmd != NULL) {
637 DCmdMark mark(dcmd);
638 return dcmd->_dcmdparser.num_arguments();
639 } else {
640 return 0;
641 }
642 }
643
644 // Enhanced JMX Agent support
645
646 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) :
647
648 DCmdWithParser(output, heap_allocated),
649
650 _config_file
651 ("config.file",
652 "set com.sun.management.config.file", "STRING", false),
653
654 _jmxremote_host
655 ("jmxremote.host",
656 "set com.sun.management.jmxremote.host", "STRING", false),
657
658 _jmxremote_port
659 ("jmxremote.port",
660 "set com.sun.management.jmxremote.port", "STRING", false),
661
662 _jmxremote_rmi_port
663 ("jmxremote.rmi.port",
664 "set com.sun.management.jmxremote.rmi.port", "STRING", false),
665
666 _jmxremote_ssl
667 ("jmxremote.ssl",
668 "set com.sun.management.jmxremote.ssl", "STRING", false),
669
670 _jmxremote_registry_ssl
671 ("jmxremote.registry.ssl",
672 "set com.sun.management.jmxremote.registry.ssl", "STRING", false),
673
674 _jmxremote_authenticate
675 ("jmxremote.authenticate",
676 "set com.sun.management.jmxremote.authenticate", "STRING", false),
677
678 _jmxremote_password_file
679 ("jmxremote.password.file",
680 "set com.sun.management.jmxremote.password.file", "STRING", false),
681
682 _jmxremote_access_file
683 ("jmxremote.access.file",
684 "set com.sun.management.jmxremote.access.file", "STRING", false),
685
686 _jmxremote_login_config
687 ("jmxremote.login.config",
688 "set com.sun.management.jmxremote.login.config", "STRING", false),
689
690 _jmxremote_ssl_enabled_cipher_suites
691 ("jmxremote.ssl.enabled.cipher.suites",
692 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false),
693
694 _jmxremote_ssl_enabled_protocols
695 ("jmxremote.ssl.enabled.protocols",
696 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false),
697
698 _jmxremote_ssl_need_client_auth
699 ("jmxremote.ssl.need.client.auth",
700 "set com.sun.management.jmxremote.need.client.auth", "STRING", false),
701
702 _jmxremote_ssl_config_file
703 ("jmxremote.ssl.config.file",
704 "set com.sun.management.jmxremote.ssl_config_file", "STRING", false),
705
706 // JDP Protocol support
707 _jmxremote_autodiscovery
708 ("jmxremote.autodiscovery",
709 "set com.sun.management.jmxremote.autodiscovery", "STRING", false),
710
711 _jdp_port
712 ("jdp.port",
713 "set com.sun.management.jdp.port", "INT", false),
714
715 _jdp_address
716 ("jdp.address",
717 "set com.sun.management.jdp.address", "STRING", false),
718
719 _jdp_source_addr
720 ("jdp.source_addr",
721 "set com.sun.management.jdp.source_addr", "STRING", false),
722
723 _jdp_ttl
724 ("jdp.ttl",
725 "set com.sun.management.jdp.ttl", "INT", false),
726
727 _jdp_pause
728 ("jdp.pause",
729 "set com.sun.management.jdp.pause", "INT", false),
730
731 _jdp_name
732 ("jdp.name",
733 "set com.sun.management.jdp.name", "STRING", false)
734
735 {
736 _dcmdparser.add_dcmd_option(&_config_file);
737 _dcmdparser.add_dcmd_option(&_jmxremote_host);
738 _dcmdparser.add_dcmd_option(&_jmxremote_port);
739 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port);
740 _dcmdparser.add_dcmd_option(&_jmxremote_ssl);
741 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl);
742 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate);
743 _dcmdparser.add_dcmd_option(&_jmxremote_password_file);
744 _dcmdparser.add_dcmd_option(&_jmxremote_access_file);
745 _dcmdparser.add_dcmd_option(&_jmxremote_login_config);
746 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites);
747 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols);
748 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth);
749 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file);
750 _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery);
751 _dcmdparser.add_dcmd_option(&_jdp_port);
752 _dcmdparser.add_dcmd_option(&_jdp_address);
753 _dcmdparser.add_dcmd_option(&_jdp_source_addr);
754 _dcmdparser.add_dcmd_option(&_jdp_ttl);
755 _dcmdparser.add_dcmd_option(&_jdp_pause);
756 _dcmdparser.add_dcmd_option(&_jdp_name);
757 }
758
759
760 int JMXStartRemoteDCmd::num_arguments() {
761 ResourceMark rm;
762 JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false);
763 if (dcmd != NULL) {
764 DCmdMark mark(dcmd);
765 return dcmd->_dcmdparser.num_arguments();
766 } else {
767 return 0;
768 }
769 }
770
771
772 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) {
773 ResourceMark rm(THREAD);
774 HandleMark hm(THREAD);
775
776 // Load and initialize the jdk.internal.agent.Agent class
777 // invoke startRemoteManagementAgent(string) method to start
778 // the remote management server.
779 // throw java.lang.NoSuchMethodError if the method doesn't exist
780
781 loadAgentModule(CHECK);
782 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
783 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
784
785 JavaValue result(T_VOID);
786
787 // Pass all command line arguments to java as key=value,...
788 // All checks are done on java side
789
790 int len = 0;
791 stringStream options;
792 char comma[2] = {0,0};
793
794 // Leave default values on Agent.class side and pass only
795 // agruments explicitly set by user. All arguments passed
796 // to jcmd override properties with the same name set by
797 // command line with -D or by managmenent.properties
798 // file.
799 #define PUT_OPTION(a) \
800 do { \
801 if ( (a).is_set() ){ \
802 if ( *((a).type()) == 'I' ) { \
803 options.print("%scom.sun.management.%s=" JLONG_FORMAT, comma, (a).name(), (jlong)((a).value())); \
804 } else { \
805 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (char*)((a).value())); \
806 } \
807 comma[0] = ','; \
808 }\
809 } while(0);
810
811
812 PUT_OPTION(_config_file);
813 PUT_OPTION(_jmxremote_host);
814 PUT_OPTION(_jmxremote_port);
815 PUT_OPTION(_jmxremote_rmi_port);
816 PUT_OPTION(_jmxremote_ssl);
817 PUT_OPTION(_jmxremote_registry_ssl);
818 PUT_OPTION(_jmxremote_authenticate);
819 PUT_OPTION(_jmxremote_password_file);
820 PUT_OPTION(_jmxremote_access_file);
821 PUT_OPTION(_jmxremote_login_config);
822 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites);
823 PUT_OPTION(_jmxremote_ssl_enabled_protocols);
824 PUT_OPTION(_jmxremote_ssl_need_client_auth);
825 PUT_OPTION(_jmxremote_ssl_config_file);
826 PUT_OPTION(_jmxremote_autodiscovery);
827 PUT_OPTION(_jdp_port);
828 PUT_OPTION(_jdp_address);
829 PUT_OPTION(_jdp_source_addr);
830 PUT_OPTION(_jdp_ttl);
831 PUT_OPTION(_jdp_pause);
832 PUT_OPTION(_jdp_name);
833
834 #undef PUT_OPTION
835
836 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK);
837 JavaCalls::call_static(&result, k, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK);
838 }
839
840 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) :
841 DCmd(output, heap_allocated) {
842 // do nothing
843 }
844
845 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) {
846 ResourceMark rm(THREAD);
847 HandleMark hm(THREAD);
848
849 // Load and initialize the jdk.internal.agent.Agent class
850 // invoke startLocalManagementAgent(void) method to start
851 // the local management server
852 // throw java.lang.NoSuchMethodError if method doesn't exist
853
854 loadAgentModule(CHECK);
855 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
856 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
857
858 JavaValue result(T_VOID);
859 JavaCalls::call_static(&result, k, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK);
860 }
861
862 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) {
863 ResourceMark rm(THREAD);
864 HandleMark hm(THREAD);
865
866 // Load and initialize the jdk.internal.agent.Agent class
867 // invoke stopRemoteManagementAgent method to stop the
868 // management server
869 // throw java.lang.NoSuchMethodError if method doesn't exist
870
871 loadAgentModule(CHECK);
872 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
873 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
874
875 JavaValue result(T_VOID);
876 JavaCalls::call_static(&result, k, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK);
877 }
878
879 JMXStatusDCmd::JMXStatusDCmd(outputStream *output, bool heap_allocated) :
880 DCmd(output, heap_allocated) {
881 // do nothing
882 }
883
884 void JMXStatusDCmd::execute(DCmdSource source, TRAPS) {
885 ResourceMark rm(THREAD);
886 HandleMark hm(THREAD);
887
888 // Load and initialize the jdk.internal.agent.Agent class
889 // invoke getManagementAgentStatus() method to generate the status info
890 // throw java.lang.NoSuchMethodError if method doesn't exist
891
892 loadAgentModule(CHECK);
893 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
894 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
895
896 JavaValue result(T_OBJECT);
897 JavaCalls::call_static(&result, k, vmSymbols::getAgentStatus_name(), vmSymbols::void_string_signature(), CHECK);
898
899 jvalue* jv = (jvalue*) result.get_value_addr();
900 oop str = (oop) jv->l;
901 if (str != NULL) {
902 char* out = java_lang_String::as_utf8_string(str);
903 if (out) {
904 output()->print_cr("%s", out);
905 return;
906 }
907 }
908 output()->print_cr("Error obtaining management agent status");
909 }
910
911 VMDynamicLibrariesDCmd::VMDynamicLibrariesDCmd(outputStream *output, bool heap_allocated) :
912 DCmd(output, heap_allocated) {
913 // do nothing
914 }
915
916 void VMDynamicLibrariesDCmd::execute(DCmdSource source, TRAPS) {
917 os::print_dll_info(output());
918 output()->cr();
919 }
920
921 void CompileQueueDCmd::execute(DCmdSource source, TRAPS) {
922 VM_PrintCompileQueue printCompileQueueOp(output());
923 VMThread::execute(&printCompileQueueOp);
924 }
925
926 void CodeListDCmd::execute(DCmdSource source, TRAPS) {
927 CodeCache::print_codelist(output());
928 }
929
930 void CodeCacheDCmd::execute(DCmdSource source, TRAPS) {
931 CodeCache::print_layout(output());
932 }
933
934 //---< BEGIN >--- CodeHeap State Analytics.
935 CodeHeapAnalyticsDCmd::CodeHeapAnalyticsDCmd(outputStream* output, bool heap) :
936 DCmdWithParser(output, heap),
937 _function("function", "Function to be performed (aggregate, UsedSpace, FreeSpace, MethodCount, MethodSpace, MethodAge, MethodNames, discard", "STRING", false, "all"),
938 _granularity("granularity", "Detail level - smaller value -> more detail", "STRING", false, "4096") {
939 _dcmdparser.add_dcmd_argument(&_function);
940 _dcmdparser.add_dcmd_argument(&_granularity);
941 }
942
943 void CodeHeapAnalyticsDCmd::execute(DCmdSource source, TRAPS) {
944 CompileBroker::print_heapinfo(output(), _function.value(), _granularity.value());
945 }
946
947 int CodeHeapAnalyticsDCmd::num_arguments() {
948 ResourceMark rm;
949 CodeHeapAnalyticsDCmd* dcmd = new CodeHeapAnalyticsDCmd(NULL, false);
950 if (dcmd != NULL) {
951 DCmdMark mark(dcmd);
952 return dcmd->_dcmdparser.num_arguments();
953 } else {
954 return 0;
955 }
956 }
957 //---< END >--- CodeHeap State Analytics.
958
959 void CompilerDirectivesPrintDCmd::execute(DCmdSource source, TRAPS) {
960 DirectivesStack::print(output());
961 }
962
963 CompilerDirectivesAddDCmd::CompilerDirectivesAddDCmd(outputStream* output, bool heap) :
964 DCmdWithParser(output, heap),
965 _filename("filename","Name of the directives file", "STRING",true) {
966 _dcmdparser.add_dcmd_argument(&_filename);
967 }
968
969 void CompilerDirectivesAddDCmd::execute(DCmdSource source, TRAPS) {
970 DirectivesParser::parse_from_file(_filename.value(), output());
971 }
972
973 int CompilerDirectivesAddDCmd::num_arguments() {
974 ResourceMark rm;
975 CompilerDirectivesAddDCmd* dcmd = new CompilerDirectivesAddDCmd(NULL, false);
976 if (dcmd != NULL) {
977 DCmdMark mark(dcmd);
978 return dcmd->_dcmdparser.num_arguments();
979 } else {
980 return 0;
981 }
982 }
983
984 void CompilerDirectivesRemoveDCmd::execute(DCmdSource source, TRAPS) {
985 DirectivesStack::pop(1);
986 }
987
988 void CompilerDirectivesClearDCmd::execute(DCmdSource source, TRAPS) {
989 DirectivesStack::clear();
990 }
991 #if INCLUDE_SERVICES
992 ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) :
993 DCmdWithParser(output, heap),
994 _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"),
995 _print_subclasses("-s", "If a classname is specified, print its subclasses. "
996 "Otherwise only its superclasses are printed.", "BOOLEAN", false, "false"),
997 _classname("classname", "Name of class whose hierarchy should be printed. "
998 "If not specified, all class hierarchies are printed.",
999 "STRING", false) {
1000 _dcmdparser.add_dcmd_option(&_print_interfaces);
1001 _dcmdparser.add_dcmd_option(&_print_subclasses);
1002 _dcmdparser.add_dcmd_argument(&_classname);
1003 }
1004
1005 void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) {
1006 VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(),
1007 _print_subclasses.value(), _classname.value());
1008 VMThread::execute(&printClassHierarchyOp);
1009 }
1010
1011 int ClassHierarchyDCmd::num_arguments() {
1012 ResourceMark rm;
1013 ClassHierarchyDCmd* dcmd = new ClassHierarchyDCmd(NULL, false);
1014 if (dcmd != NULL) {
1015 DCmdMark mark(dcmd);
1016 return dcmd->_dcmdparser.num_arguments();
1017 } else {
1018 return 0;
1019 }
1020 }
1021
1022 #endif
1023
1024 class VM_DumpTouchedMethods : public VM_Operation {
1025 private:
1026 outputStream* _out;
1027 public:
1028 VM_DumpTouchedMethods(outputStream* out) {
1029 _out = out;
1030 }
1031
1032 virtual VMOp_Type type() const { return VMOp_DumpTouchedMethods; }
1033
1034 virtual void doit() {
1035 Method::print_touched_methods(_out);
1036 }
1037 };
1038
1039 TouchedMethodsDCmd::TouchedMethodsDCmd(outputStream* output, bool heap) :
1040 DCmdWithParser(output, heap)
1041 {}
1042
1043 void TouchedMethodsDCmd::execute(DCmdSource source, TRAPS) {
1044 if (!LogTouchedMethods) {
1045 output()->print_cr("VM.print_touched_methods command requires -XX:+LogTouchedMethods");
1046 return;
1047 }
1048 VM_DumpTouchedMethods dumper(output());
1049 VMThread::execute(&dumper);
1050 }
1051
1052 int TouchedMethodsDCmd::num_arguments() {
1053 return 0;
1054 }