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/classLoaderHierarchyDCmd.hpp"
28 #include "classfile/classLoaderStats.hpp"
29 #include "classfile/compactHashtable.hpp"
30 #include "compiler/compileBroker.hpp"
31 #include "compiler/directivesParser.hpp"
32 #include "gc/shared/vmGCOperations.hpp"
33 #include "memory/metaspace/metaspaceDCmd.hpp"
34 #include "memory/resourceArea.hpp"
35 #include "oops/objArrayOop.inline.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "oops/typeArrayOop.inline.hpp"
38 #include "runtime/flags/jvmFlag.hpp"
39 #include "runtime/handles.inline.hpp"
40 #include "runtime/javaCalls.hpp"
41 #include "runtime/os.hpp"
42 #include "services/diagnosticArgument.hpp"
43 #include "services/diagnosticCommand.hpp"
44 #include "services/diagnosticFramework.hpp"
45 #include "services/heapDumper.hpp"
46 #include "services/management.hpp"
47 #include "services/writeableFlags.hpp"
48 #include "utilities/debug.hpp"
49 #include "utilities/formatBuffer.hpp"
50 #include "utilities/macros.hpp"
51
52
53 static void loadAgentModule(TRAPS) {
54 ResourceMark rm(THREAD);
55 HandleMark hm(THREAD);
56
57 JavaValue result(T_OBJECT);
58 Handle h_module_name = java_lang_String::create_from_str("jdk.management.agent", CHECK);
59 JavaCalls::call_static(&result,
60 SystemDictionary::module_Modules_klass(),
61 vmSymbols::loadModule_name(),
62 vmSymbols::loadModule_signature(),
63 h_module_name,
64 THREAD);
65 }
66
67 void DCmdRegistrant::register_dcmds(){
68 // Registration of the diagnostic commands
69 // First argument specifies which interfaces will export the command
70 // Second argument specifies if the command is enabled
71 // Third argument specifies if the command is hidden
72 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI
73 | DCmd_Source_MBean;
74 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(full_export, true, false));
75 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(full_export, true, false));
76 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(full_export, true, false));
77 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(full_export, true, false));
78 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(full_export, true, false));
79 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SetVMFlagDCmd>(full_export, true, false));
80 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMDynamicLibrariesDCmd>(full_export, true, false));
81 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(full_export, true, false));
82 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMInfoDCmd>(full_export, true, false));
83 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(full_export, true, false));
84 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(full_export, true, false));
85 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapInfoDCmd>(full_export, true, false));
86 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<FinalizerInfoDCmd>(full_export, true, false));
87 #if INCLUDE_SERVICES
88 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false));
89 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(full_export, true, false));
90 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(full_export, true, false));
91 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemDictionaryDCmd>(full_export, true, false));
92 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHierarchyDCmd>(full_export, true, false));
93 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SymboltableDCmd>(full_export, true, false));
94 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<StringtableDCmd>(full_export, true, false));
95 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<metaspace::MetaspaceDCmd>(full_export, true, false));
96 #if INCLUDE_JVMTI // Both JVMTI and SERVICES have to be enabled to have this dcmd
97 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIAgentLoadDCmd>(full_export, true, false));
98 #endif // INCLUDE_JVMTI
99 #endif // INCLUDE_SERVICES
100 #if INCLUDE_JVMTI
101 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIDataDumpDCmd>(full_export, true, false));
102 #endif // INCLUDE_JVMTI
103 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false));
104 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false));
105 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderHierarchyDCmd>(full_export, true, false));
106 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false));
107 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false));
108 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false));
109 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<TouchedMethodsDCmd>(full_export, true, false));
110 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeHeapAnalyticsDCmd>(full_export, true, false));
111
112 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesPrintDCmd>(full_export, true, false));
113 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesAddDCmd>(full_export, true, false));
114 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesRemoveDCmd>(full_export, true, false));
115 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesClearDCmd>(full_export, true, false));
116
117 // Enhanced JMX Agent Support
118 // These commands won't be exported via the DiagnosticCommandMBean until an
119 // appropriate permission is created for them
120 uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI;
121 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false));
122 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false));
123 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false));
124 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStatusDCmd>(jmx_agent_export_flags, true,false));
125
126 }
127
128 #ifndef HAVE_EXTRA_DCMD
129 void DCmdRegistrant::register_dcmds_ext(){
130 // Do nothing here
131 }
132 #endif
133
134
135 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
136 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
137 _cmd("command name", "The name of the command for which we want help",
138 "STRING", false) {
139 _dcmdparser.add_dcmd_option(&_all);
140 _dcmdparser.add_dcmd_argument(&_cmd);
141 };
142
143
144 static int compare_strings(const char** s1, const char** s2) {
145 return ::strcmp(*s1, *s2);
146 }
147
148 void HelpDCmd::execute(DCmdSource source, TRAPS) {
149 if (_all.value()) {
150 GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list(source);
151 cmd_list->sort(compare_strings);
152 for (int i = 0; i < cmd_list->length(); i++) {
153 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
154 strlen(cmd_list->at(i)));
155 output()->print_cr("%s%s", factory->name(),
156 factory->is_enabled() ? "" : " [disabled]");
157 output()->print_cr("\t%s", factory->description());
158 output()->cr();
159 factory = factory->next();
160 }
161 } else if (_cmd.has_value()) {
162 DCmd* cmd = NULL;
163 DCmdFactory* factory = DCmdFactory::factory(source, _cmd.value(),
164 strlen(_cmd.value()));
165 if (factory != NULL) {
166 output()->print_cr("%s%s", factory->name(),
167 factory->is_enabled() ? "" : " [disabled]");
168 output()->print_cr("%s", factory->description());
169 output()->print_cr("\nImpact: %s", factory->impact());
170 JavaPermission p = factory->permission();
171 if(p._class != NULL) {
172 if(p._action != NULL) {
173 output()->print_cr("\nPermission: %s(%s, %s)",
174 p._class, p._name == NULL ? "null" : p._name, p._action);
175 } else {
176 output()->print_cr("\nPermission: %s(%s)",
177 p._class, p._name == NULL ? "null" : p._name);
178 }
179 }
180 output()->cr();
181 cmd = factory->create_resource_instance(output());
182 if (cmd != NULL) {
183 DCmdMark mark(cmd);
184 cmd->print_help(factory->name());
185 }
186 } else {
187 output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value());
188 }
189 } else {
190 output()->print_cr("The following commands are available:");
191 GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(source);
192 cmd_list->sort(compare_strings);
193 for (int i = 0; i < cmd_list->length(); i++) {
194 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
195 strlen(cmd_list->at(i)));
196 output()->print_cr("%s%s", factory->name(),
197 factory->is_enabled() ? "" : " [disabled]");
198 factory = factory->_next;
199 }
200 output()->print_cr("\nFor more information about a specific command use 'help <command>'.");
201 }
202 }
203
204 int HelpDCmd::num_arguments() {
205 ResourceMark rm;
206 HelpDCmd* dcmd = new HelpDCmd(NULL, false);
207 if (dcmd != NULL) {
208 DCmdMark mark(dcmd);
209 return dcmd->_dcmdparser.num_arguments();
210 } else {
211 return 0;
212 }
213 }
214
215 void VersionDCmd::execute(DCmdSource source, TRAPS) {
216 output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(),
217 Abstract_VM_Version::vm_release());
218 JDK_Version jdk_version = JDK_Version::current();
219 if (jdk_version.patch_version() > 0) {
220 output()->print_cr("JDK %d.%d.%d.%d", jdk_version.major_version(),
221 jdk_version.minor_version(), jdk_version.security_version(),
222 jdk_version.patch_version());
223 } else {
224 output()->print_cr("JDK %d.%d.%d", jdk_version.major_version(),
225 jdk_version.minor_version(), jdk_version.security_version());
226 }
227 }
228
229 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) :
230 DCmdWithParser(output, heap),
231 _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") {
232 _dcmdparser.add_dcmd_option(&_all);
233 }
234
235 void PrintVMFlagsDCmd::execute(DCmdSource source, TRAPS) {
236 if (_all.value()) {
237 JVMFlag::printFlags(output(), true);
238 } else {
239 JVMFlag::printSetFlags(output());
240 }
241 }
242
243 int PrintVMFlagsDCmd::num_arguments() {
244 ResourceMark rm;
245 PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false);
246 if (dcmd != NULL) {
247 DCmdMark mark(dcmd);
248 return dcmd->_dcmdparser.num_arguments();
249 } else {
250 return 0;
251 }
252 }
253
254 SetVMFlagDCmd::SetVMFlagDCmd(outputStream* output, bool heap) :
255 DCmdWithParser(output, heap),
256 _flag("flag name", "The name of the flag we want to set",
257 "STRING", true),
258 _value("string value", "The value we want to set", "STRING", false) {
259 _dcmdparser.add_dcmd_argument(&_flag);
260 _dcmdparser.add_dcmd_argument(&_value);
261 }
262
263 void SetVMFlagDCmd::execute(DCmdSource source, TRAPS) {
264 const char* val = NULL;
265 if (_value.value() != NULL) {
266 val = _value.value();
267 }
268
269 FormatBuffer<80> err_msg("%s", "");
270 int ret = WriteableFlags::set_flag(_flag.value(), val, JVMFlag::MANAGEMENT, err_msg);
271
272 if (ret != JVMFlag::SUCCESS) {
273 output()->print_cr("%s", err_msg.buffer());
274 }
275 }
276
277 int SetVMFlagDCmd::num_arguments() {
278 ResourceMark rm;
279 SetVMFlagDCmd* dcmd = new SetVMFlagDCmd(NULL, false);
280 if (dcmd != NULL) {
281 DCmdMark mark(dcmd);
282 return dcmd->_dcmdparser.num_arguments();
283 } else {
284 return 0;
285 }
286 }
287
288 void JVMTIDataDumpDCmd::execute(DCmdSource source, TRAPS) {
289 if (JvmtiExport::should_post_data_dump()) {
290 JvmtiExport::post_data_dump();
291 }
292 }
293
294 #if INCLUDE_SERVICES
295 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) :
296 DCmdWithParser(output, heap),
297 _libpath("library path", "Absolute path of the JVMTI agent to load.",
298 "STRING", true),
299 _option("agent option", "Option string to pass the agent.", "STRING", false) {
300 _dcmdparser.add_dcmd_argument(&_libpath);
301 _dcmdparser.add_dcmd_argument(&_option);
302 }
303
304 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) {
305
306 if (_libpath.value() == NULL) {
307 output()->print_cr("JVMTI.agent_load dcmd needs library path.");
308 return;
309 }
310
311 char *suffix = strrchr(_libpath.value(), '.');
312 bool is_java_agent = (suffix != NULL) && (strncmp(".jar", suffix, 4) == 0);
313
314 if (is_java_agent) {
315 if (_option.value() == NULL) {
316 JvmtiExport::load_agent_library("instrument", "false",
317 _libpath.value(), output());
318 } else {
319 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2;
320 if (opt_len > 4096) {
321 output()->print_cr("JVMTI agent attach failed: Options is too long.");
322 return;
323 }
324
325 char *opt = (char *)os::malloc(opt_len, mtInternal);
326 if (opt == NULL) {
327 output()->print_cr("JVMTI agent attach failed: "
328 "Could not allocate " SIZE_FORMAT " bytes for argument.",
329 opt_len);
330 return;
331 }
332
333 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value());
334 JvmtiExport::load_agent_library("instrument", "false", opt, output());
335
336 os::free(opt);
337 }
338 } else {
339 JvmtiExport::load_agent_library(_libpath.value(), "true",
340 _option.value(), output());
341 }
342 }
343
344 int JVMTIAgentLoadDCmd::num_arguments() {
345 ResourceMark rm;
346 JVMTIAgentLoadDCmd* dcmd = new JVMTIAgentLoadDCmd(NULL, false);
347 if (dcmd != NULL) {
348 DCmdMark mark(dcmd);
349 return dcmd->_dcmdparser.num_arguments();
350 } else {
351 return 0;
352 }
353 }
354 #endif // INCLUDE_SERVICES
355
356 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) {
357 // load VMSupport
358 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
359 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
360 InstanceKlass* ik = InstanceKlass::cast(k);
361 if (ik->should_be_initialized()) {
362 ik->initialize(THREAD);
363 }
364 if (HAS_PENDING_EXCEPTION) {
365 java_lang_Throwable::print(PENDING_EXCEPTION, output());
366 output()->cr();
367 CLEAR_PENDING_EXCEPTION;
368 return;
369 }
370
371 // invoke the serializePropertiesToByteArray method
372 JavaValue result(T_OBJECT);
373 JavaCallArguments args;
374
375 Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature();
376 JavaCalls::call_static(&result,
377 ik,
378 vmSymbols::serializePropertiesToByteArray_name(),
379 signature,
380 &args,
381 THREAD);
382 if (HAS_PENDING_EXCEPTION) {
383 java_lang_Throwable::print(PENDING_EXCEPTION, output());
384 output()->cr();
385 CLEAR_PENDING_EXCEPTION;
386 return;
387 }
388
389 // The result should be a [B
390 oop res = (oop)result.get_jobject();
391 assert(res->is_typeArray(), "just checking");
392 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking");
393
394 // copy the bytes to the output stream
395 typeArrayOop ba = typeArrayOop(res);
396 jbyte* addr = typeArrayOop(res)->byte_at_addr(0);
397 output()->print_raw((const char*)addr, ba->length());
398 }
399
400 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) :
401 DCmdWithParser(output, heap),
402 _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") {
403 _dcmdparser.add_dcmd_option(&_date);
404 }
405
406 void VMUptimeDCmd::execute(DCmdSource source, TRAPS) {
407 if (_date.value()) {
408 output()->date_stamp(true, "", ": ");
409 }
410 output()->time_stamp().update_to(tty->time_stamp().ticks());
411 output()->stamp();
412 output()->print_cr(" s");
413 }
414
415 int VMUptimeDCmd::num_arguments() {
416 ResourceMark rm;
417 VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false);
418 if (dcmd != NULL) {
419 DCmdMark mark(dcmd);
420 return dcmd->_dcmdparser.num_arguments();
421 } else {
422 return 0;
423 }
424 }
425
426 void VMInfoDCmd::execute(DCmdSource source, TRAPS) {
427 VMError::print_vm_info(_output);
428 }
429
430 void SystemGCDCmd::execute(DCmdSource source, TRAPS) {
431 Universe::heap()->collect(GCCause::_dcmd_gc_run);
432 }
433
434 void RunFinalizationDCmd::execute(DCmdSource source, TRAPS) {
435 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
436 true, CHECK);
437 JavaValue result(T_VOID);
438 JavaCalls::call_static(&result, k,
439 vmSymbols::run_finalization_name(),
440 vmSymbols::void_method_signature(), CHECK);
441 }
442
443 void HeapInfoDCmd::execute(DCmdSource source, TRAPS) {
444 MutexLocker hl(Heap_lock);
445 Universe::heap()->print_on(output());
446 }
447
448 void FinalizerInfoDCmd::execute(DCmdSource source, TRAPS) {
449 ResourceMark rm;
450
451 Klass* k = SystemDictionary::resolve_or_fail(
452 vmSymbols::finalizer_histogram_klass(), true, CHECK);
453
454 JavaValue result(T_ARRAY);
455
456 // We are calling lang.ref.FinalizerHistogram.getFinalizerHistogram() method
457 // and expect it to return array of FinalizerHistogramEntry as Object[]
458
459 JavaCalls::call_static(&result, k,
460 vmSymbols::get_finalizer_histogram_name(),
461 vmSymbols::void_finalizer_histogram_entry_array_signature(), CHECK);
462
463 objArrayOop result_oop = (objArrayOop) result.get_jobject();
464 if (result_oop->length() == 0) {
465 output()->print_cr("No instances waiting for finalization found");
466 return;
467 }
468
469 oop foop = result_oop->obj_at(0);
470 InstanceKlass* ik = InstanceKlass::cast(foop->klass());
471
472 fieldDescriptor count_fd, name_fd;
473
474 Klass* count_res = ik->find_field(
475 vmSymbols::finalizer_histogram_entry_count_field(), vmSymbols::int_signature(), &count_fd);
476
477 Klass* name_res = ik->find_field(
478 vmSymbols::finalizer_histogram_entry_name_field(), vmSymbols::string_signature(), &name_fd);
479
480 assert(count_res != NULL && name_res != NULL, "Unexpected layout of FinalizerHistogramEntry");
481
482 output()->print_cr("Unreachable instances waiting for finalization");
483 output()->print_cr("#instances class name");
484 output()->print_cr("-----------------------");
485
486 for (int i = 0; i < result_oop->length(); ++i) {
487 oop element_oop = result_oop->obj_at(i);
488 oop str_oop = element_oop->obj_field(name_fd.offset());
489 char *name = java_lang_String::as_utf8_string(str_oop);
490 int count = element_oop->int_field(count_fd.offset());
491 output()->print_cr("%10d %s", count, name);
492 }
493 }
494
495 #if INCLUDE_SERVICES // Heap dumping/inspection supported
496 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
497 DCmdWithParser(output, heap),
498 _filename("filename","Name of the dump file", "STRING",true),
499 _all("-all", "Dump all objects, including unreachable objects",
500 "BOOLEAN", false, "false") {
501 _dcmdparser.add_dcmd_option(&_all);
502 _dcmdparser.add_dcmd_argument(&_filename);
503 }
504
505 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) {
506 // Request a full GC before heap dump if _all is false
507 // This helps reduces the amount of unreachable objects in the dump
508 // and makes it easier to browse.
509 HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
510 int res = dumper.dump(_filename.value());
511 if (res == 0) {
512 output()->print_cr("Heap dump file created");
513 } else {
514 // heap dump failed
515 ResourceMark rm;
516 char* error = dumper.error_as_C_string();
517 if (error == NULL) {
518 output()->print_cr("Dump failed - reason unknown");
519 } else {
520 output()->print_cr("%s", error);
521 }
522 }
523 }
524
525 int HeapDumpDCmd::num_arguments() {
526 ResourceMark rm;
527 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
528 if (dcmd != NULL) {
529 DCmdMark mark(dcmd);
530 return dcmd->_dcmdparser.num_arguments();
531 } else {
532 return 0;
533 }
534 }
535
536 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
537 DCmdWithParser(output, heap),
538 _all("-all", "Inspect all objects, including unreachable objects",
539 "BOOLEAN", false, "false") {
540 _dcmdparser.add_dcmd_option(&_all);
541 }
542
543 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) {
544 VM_GC_HeapInspection heapop(output(),
545 !_all.value() /* request full gc if false */);
546 VMThread::execute(&heapop);
547 }
548
549 int ClassHistogramDCmd::num_arguments() {
550 ResourceMark rm;
551 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
552 if (dcmd != NULL) {
553 DCmdMark mark(dcmd);
554 return dcmd->_dcmdparser.num_arguments();
555 } else {
556 return 0;
557 }
558 }
559
560 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total"
561 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) :
562 DCmdWithParser(output, heap),
563 _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets",
564 "BOOLEAN", false, "false"),
565 _all("-all", "Show all columns",
566 "BOOLEAN", false, "false"),
567 _help("-help", "Show meaning of all the columns",
568 "BOOLEAN", false, "false"),
569 _columns("columns", "Comma-separated list of all the columns to show. "
570 "If not specified, the following columns are shown: " DEFAULT_COLUMNS,
571 "STRING", false) {
572 _dcmdparser.add_dcmd_option(&_all);
573 _dcmdparser.add_dcmd_option(&_csv);
574 _dcmdparser.add_dcmd_option(&_help);
575 _dcmdparser.add_dcmd_argument(&_columns);
576 }
577
578 void ClassStatsDCmd::execute(DCmdSource source, TRAPS) {
579 VM_GC_HeapInspection heapop(output(),
580 true /* request_full_gc */);
581 heapop.set_csv_format(_csv.value());
582 heapop.set_print_help(_help.value());
583 heapop.set_print_class_stats(true);
584 if (_all.value()) {
585 if (_columns.has_value()) {
586 output()->print_cr("Cannot specify -all and individual columns at the same time");
587 return;
588 } else {
589 heapop.set_columns(NULL);
590 }
591 } else {
592 if (_columns.has_value()) {
593 heapop.set_columns(_columns.value());
594 } else {
595 heapop.set_columns(DEFAULT_COLUMNS);
596 }
597 }
598 VMThread::execute(&heapop);
599 }
600
601 int ClassStatsDCmd::num_arguments() {
602 ResourceMark rm;
603 ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false);
604 if (dcmd != NULL) {
605 DCmdMark mark(dcmd);
606 return dcmd->_dcmdparser.num_arguments();
607 } else {
608 return 0;
609 }
610 }
611 #endif // INCLUDE_SERVICES
612
613 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
614 DCmdWithParser(output, heap),
615 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false"),
616 _extended("-e", "print extended thread information", "BOOLEAN", false, "false") {
617 _dcmdparser.add_dcmd_option(&_locks);
618 _dcmdparser.add_dcmd_option(&_extended);
619 }
620
621 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) {
622 // thread stacks
623 VM_PrintThreads op1(output(), _locks.value(), _extended.value());
624 VMThread::execute(&op1);
625
626 // JNI global handles
627 VM_PrintJNI op2(output());
628 VMThread::execute(&op2);
629
630 // Deadlock detection
631 VM_FindDeadlocks op3(output());
632 VMThread::execute(&op3);
633 }
634
635 int ThreadDumpDCmd::num_arguments() {
636 ResourceMark rm;
637 ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false);
638 if (dcmd != NULL) {
639 DCmdMark mark(dcmd);
640 return dcmd->_dcmdparser.num_arguments();
641 } else {
642 return 0;
643 }
644 }
645
646 // Enhanced JMX Agent support
647
648 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) :
649
650 DCmdWithParser(output, heap_allocated),
651
652 _config_file
653 ("config.file",
654 "set com.sun.management.config.file", "STRING", false),
655
656 _jmxremote_host
657 ("jmxremote.host",
658 "set com.sun.management.jmxremote.host", "STRING", false),
659
660 _jmxremote_port
661 ("jmxremote.port",
662 "set com.sun.management.jmxremote.port", "STRING", false),
663
664 _jmxremote_rmi_port
665 ("jmxremote.rmi.port",
666 "set com.sun.management.jmxremote.rmi.port", "STRING", false),
667
668 _jmxremote_ssl
669 ("jmxremote.ssl",
670 "set com.sun.management.jmxremote.ssl", "STRING", false),
671
672 _jmxremote_registry_ssl
673 ("jmxremote.registry.ssl",
674 "set com.sun.management.jmxremote.registry.ssl", "STRING", false),
675
676 _jmxremote_authenticate
677 ("jmxremote.authenticate",
678 "set com.sun.management.jmxremote.authenticate", "STRING", false),
679
680 _jmxremote_password_file
681 ("jmxremote.password.file",
682 "set com.sun.management.jmxremote.password.file", "STRING", false),
683
684 _jmxremote_access_file
685 ("jmxremote.access.file",
686 "set com.sun.management.jmxremote.access.file", "STRING", false),
687
688 _jmxremote_login_config
689 ("jmxremote.login.config",
690 "set com.sun.management.jmxremote.login.config", "STRING", false),
691
692 _jmxremote_ssl_enabled_cipher_suites
693 ("jmxremote.ssl.enabled.cipher.suites",
694 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false),
695
696 _jmxremote_ssl_enabled_protocols
697 ("jmxremote.ssl.enabled.protocols",
698 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false),
699
700 _jmxremote_ssl_need_client_auth
701 ("jmxremote.ssl.need.client.auth",
702 "set com.sun.management.jmxremote.need.client.auth", "STRING", false),
703
704 _jmxremote_ssl_config_file
705 ("jmxremote.ssl.config.file",
706 "set com.sun.management.jmxremote.ssl_config_file", "STRING", false),
707
708 // JDP Protocol support
709 _jmxremote_autodiscovery
710 ("jmxremote.autodiscovery",
711 "set com.sun.management.jmxremote.autodiscovery", "STRING", false),
712
713 _jdp_port
714 ("jdp.port",
715 "set com.sun.management.jdp.port", "INT", false),
716
717 _jdp_address
718 ("jdp.address",
719 "set com.sun.management.jdp.address", "STRING", false),
720
721 _jdp_source_addr
722 ("jdp.source_addr",
723 "set com.sun.management.jdp.source_addr", "STRING", false),
724
725 _jdp_ttl
726 ("jdp.ttl",
727 "set com.sun.management.jdp.ttl", "INT", false),
728
729 _jdp_pause
730 ("jdp.pause",
731 "set com.sun.management.jdp.pause", "INT", false),
732
733 _jdp_name
734 ("jdp.name",
735 "set com.sun.management.jdp.name", "STRING", false)
736
737 {
738 _dcmdparser.add_dcmd_option(&_config_file);
739 _dcmdparser.add_dcmd_option(&_jmxremote_host);
740 _dcmdparser.add_dcmd_option(&_jmxremote_port);
741 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port);
742 _dcmdparser.add_dcmd_option(&_jmxremote_ssl);
743 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl);
744 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate);
745 _dcmdparser.add_dcmd_option(&_jmxremote_password_file);
746 _dcmdparser.add_dcmd_option(&_jmxremote_access_file);
747 _dcmdparser.add_dcmd_option(&_jmxremote_login_config);
748 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites);
749 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols);
750 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth);
751 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file);
752 _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery);
753 _dcmdparser.add_dcmd_option(&_jdp_port);
754 _dcmdparser.add_dcmd_option(&_jdp_address);
755 _dcmdparser.add_dcmd_option(&_jdp_source_addr);
756 _dcmdparser.add_dcmd_option(&_jdp_ttl);
757 _dcmdparser.add_dcmd_option(&_jdp_pause);
758 _dcmdparser.add_dcmd_option(&_jdp_name);
759 }
760
761
762 int JMXStartRemoteDCmd::num_arguments() {
763 ResourceMark rm;
764 JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false);
765 if (dcmd != NULL) {
766 DCmdMark mark(dcmd);
767 return dcmd->_dcmdparser.num_arguments();
768 } else {
769 return 0;
770 }
771 }
772
773
774 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) {
775 ResourceMark rm(THREAD);
776 HandleMark hm(THREAD);
777
778 // Load and initialize the jdk.internal.agent.Agent class
779 // invoke startRemoteManagementAgent(string) method to start
780 // the remote management server.
781 // throw java.lang.NoSuchMethodError if the method doesn't exist
782
783 loadAgentModule(CHECK);
784 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
785 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
786
787 JavaValue result(T_VOID);
788
789 // Pass all command line arguments to java as key=value,...
790 // All checks are done on java side
791
792 int len = 0;
793 stringStream options;
794 char comma[2] = {0,0};
795
796 // Leave default values on Agent.class side and pass only
797 // agruments explicitly set by user. All arguments passed
798 // to jcmd override properties with the same name set by
799 // command line with -D or by managmenent.properties
800 // file.
801 #define PUT_OPTION(a) \
802 do { \
803 if ( (a).is_set() ){ \
804 if ( *((a).type()) == 'I' ) { \
805 options.print("%scom.sun.management.%s=" JLONG_FORMAT, comma, (a).name(), (jlong)((a).value())); \
806 } else { \
807 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (char*)((a).value())); \
808 } \
809 comma[0] = ','; \
810 }\
811 } while(0);
812
813
814 PUT_OPTION(_config_file);
815 PUT_OPTION(_jmxremote_host);
816 PUT_OPTION(_jmxremote_port);
817 PUT_OPTION(_jmxremote_rmi_port);
818 PUT_OPTION(_jmxremote_ssl);
819 PUT_OPTION(_jmxremote_registry_ssl);
820 PUT_OPTION(_jmxremote_authenticate);
821 PUT_OPTION(_jmxremote_password_file);
822 PUT_OPTION(_jmxremote_access_file);
823 PUT_OPTION(_jmxremote_login_config);
824 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites);
825 PUT_OPTION(_jmxremote_ssl_enabled_protocols);
826 PUT_OPTION(_jmxremote_ssl_need_client_auth);
827 PUT_OPTION(_jmxremote_ssl_config_file);
828 PUT_OPTION(_jmxremote_autodiscovery);
829 PUT_OPTION(_jdp_port);
830 PUT_OPTION(_jdp_address);
831 PUT_OPTION(_jdp_source_addr);
832 PUT_OPTION(_jdp_ttl);
833 PUT_OPTION(_jdp_pause);
834 PUT_OPTION(_jdp_name);
835
836 #undef PUT_OPTION
837
838 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK);
839 JavaCalls::call_static(&result, k, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK);
840 }
841
842 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) :
843 DCmd(output, heap_allocated) {
844 // do nothing
845 }
846
847 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) {
848 ResourceMark rm(THREAD);
849 HandleMark hm(THREAD);
850
851 // Load and initialize the jdk.internal.agent.Agent class
852 // invoke startLocalManagementAgent(void) method to start
853 // the local management server
854 // throw java.lang.NoSuchMethodError if method doesn't exist
855
856 loadAgentModule(CHECK);
857 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
858 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
859
860 JavaValue result(T_VOID);
861 JavaCalls::call_static(&result, k, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK);
862 }
863
864 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) {
865 ResourceMark rm(THREAD);
866 HandleMark hm(THREAD);
867
868 // Load and initialize the jdk.internal.agent.Agent class
869 // invoke stopRemoteManagementAgent method to stop the
870 // management server
871 // throw java.lang.NoSuchMethodError if method doesn't exist
872
873 loadAgentModule(CHECK);
874 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
875 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
876
877 JavaValue result(T_VOID);
878 JavaCalls::call_static(&result, k, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK);
879 }
880
881 JMXStatusDCmd::JMXStatusDCmd(outputStream *output, bool heap_allocated) :
882 DCmd(output, heap_allocated) {
883 // do nothing
884 }
885
886 void JMXStatusDCmd::execute(DCmdSource source, TRAPS) {
887 ResourceMark rm(THREAD);
888 HandleMark hm(THREAD);
889
890 // Load and initialize the jdk.internal.agent.Agent class
891 // invoke getManagementAgentStatus() method to generate the status info
892 // throw java.lang.NoSuchMethodError if method doesn't exist
893
894 loadAgentModule(CHECK);
895 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
896 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
897
898 JavaValue result(T_OBJECT);
899 JavaCalls::call_static(&result, k, vmSymbols::getAgentStatus_name(), vmSymbols::void_string_signature(), CHECK);
900
901 jvalue* jv = (jvalue*) result.get_value_addr();
902 oop str = (oop) jv->l;
903 if (str != NULL) {
904 char* out = java_lang_String::as_utf8_string(str);
905 if (out) {
906 output()->print_cr("%s", out);
907 return;
908 }
909 }
910 output()->print_cr("Error obtaining management agent status");
911 }
912
913 VMDynamicLibrariesDCmd::VMDynamicLibrariesDCmd(outputStream *output, bool heap_allocated) :
914 DCmd(output, heap_allocated) {
915 // do nothing
916 }
917
918 void VMDynamicLibrariesDCmd::execute(DCmdSource source, TRAPS) {
919 os::print_dll_info(output());
920 output()->cr();
921 }
922
923 void CompileQueueDCmd::execute(DCmdSource source, TRAPS) {
924 VM_PrintCompileQueue printCompileQueueOp(output());
925 VMThread::execute(&printCompileQueueOp);
926 }
927
928 void CodeListDCmd::execute(DCmdSource source, TRAPS) {
929 CodeCache::print_codelist(output());
930 }
931
932 void CodeCacheDCmd::execute(DCmdSource source, TRAPS) {
933 CodeCache::print_layout(output());
934 }
935
936 //---< BEGIN >--- CodeHeap State Analytics.
937 CodeHeapAnalyticsDCmd::CodeHeapAnalyticsDCmd(outputStream* output, bool heap) :
938 DCmdWithParser(output, heap),
939 _function("function", "Function to be performed (aggregate, UsedSpace, FreeSpace, MethodCount, MethodSpace, MethodAge, MethodNames, discard", "STRING", false, "all"),
940 _granularity("granularity", "Detail level - smaller value -> more detail", "STRING", false, "4096") {
941 _dcmdparser.add_dcmd_argument(&_function);
942 _dcmdparser.add_dcmd_argument(&_granularity);
943 }
944
945 void CodeHeapAnalyticsDCmd::execute(DCmdSource source, TRAPS) {
946 CompileBroker::print_heapinfo(output(), _function.value(), _granularity.value());
947 }
948
949 int CodeHeapAnalyticsDCmd::num_arguments() {
950 ResourceMark rm;
951 CodeHeapAnalyticsDCmd* dcmd = new CodeHeapAnalyticsDCmd(NULL, false);
952 if (dcmd != NULL) {
953 DCmdMark mark(dcmd);
954 return dcmd->_dcmdparser.num_arguments();
955 } else {
956 return 0;
957 }
958 }
959 //---< END >--- CodeHeap State Analytics.
960
961 void CompilerDirectivesPrintDCmd::execute(DCmdSource source, TRAPS) {
962 DirectivesStack::print(output());
963 }
964
965 CompilerDirectivesAddDCmd::CompilerDirectivesAddDCmd(outputStream* output, bool heap) :
966 DCmdWithParser(output, heap),
967 _filename("filename","Name of the directives file", "STRING",true) {
968 _dcmdparser.add_dcmd_argument(&_filename);
969 }
970
971 void CompilerDirectivesAddDCmd::execute(DCmdSource source, TRAPS) {
972 DirectivesParser::parse_from_file(_filename.value(), output());
973 }
974
975 int CompilerDirectivesAddDCmd::num_arguments() {
976 ResourceMark rm;
977 CompilerDirectivesAddDCmd* dcmd = new CompilerDirectivesAddDCmd(NULL, false);
978 if (dcmd != NULL) {
979 DCmdMark mark(dcmd);
980 return dcmd->_dcmdparser.num_arguments();
981 } else {
982 return 0;
983 }
984 }
985
986 void CompilerDirectivesRemoveDCmd::execute(DCmdSource source, TRAPS) {
987 DirectivesStack::pop(1);
988 }
989
990 void CompilerDirectivesClearDCmd::execute(DCmdSource source, TRAPS) {
991 DirectivesStack::clear();
992 }
993 #if INCLUDE_SERVICES
994 ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) :
995 DCmdWithParser(output, heap),
996 _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"),
997 _print_subclasses("-s", "If a classname is specified, print its subclasses. "
998 "Otherwise only its superclasses are printed.", "BOOLEAN", false, "false"),
999 _classname("classname", "Name of class whose hierarchy should be printed. "
1000 "If not specified, all class hierarchies are printed.",
1001 "STRING", false) {
1002 _dcmdparser.add_dcmd_option(&_print_interfaces);
1003 _dcmdparser.add_dcmd_option(&_print_subclasses);
1004 _dcmdparser.add_dcmd_argument(&_classname);
1005 }
1006
1007 void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) {
1008 VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(),
1009 _print_subclasses.value(), _classname.value());
1010 VMThread::execute(&printClassHierarchyOp);
1011 }
1012
1013 int ClassHierarchyDCmd::num_arguments() {
1014 ResourceMark rm;
1015 ClassHierarchyDCmd* dcmd = new ClassHierarchyDCmd(NULL, false);
1016 if (dcmd != NULL) {
1017 DCmdMark mark(dcmd);
1018 return dcmd->_dcmdparser.num_arguments();
1019 } else {
1020 return 0;
1021 }
1022 }
1023
1024 #endif
1025
1026 class VM_DumpTouchedMethods : public VM_Operation {
1027 private:
1028 outputStream* _out;
1029 public:
1030 VM_DumpTouchedMethods(outputStream* out) {
1031 _out = out;
1032 }
1033
1034 virtual VMOp_Type type() const { return VMOp_DumpTouchedMethods; }
1035
1036 virtual void doit() {
1037 Method::print_touched_methods(_out);
1038 }
1039 };
1040
1041 TouchedMethodsDCmd::TouchedMethodsDCmd(outputStream* output, bool heap) :
1042 DCmdWithParser(output, heap)
1043 {}
1044
1045 void TouchedMethodsDCmd::execute(DCmdSource source, TRAPS) {
1046 if (!LogTouchedMethods) {
1047 output()->print_cr("VM.print_touched_methods command requires -XX:+LogTouchedMethods");
1048 return;
1049 }
1050 VM_DumpTouchedMethods dumper(output());
1051 VMThread::execute(&dumper);
1052 }
1053
1054 int TouchedMethodsDCmd::num_arguments() {
1055 return 0;
1056 }