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/fieldDescriptor.inline.hpp"
39 #include "runtime/flags/jvmFlag.hpp"
40 #include "runtime/handles.inline.hpp"
41 #include "runtime/javaCalls.hpp"
42 #include "runtime/os.hpp"
43 #include "services/diagnosticArgument.hpp"
44 #include "services/diagnosticCommand.hpp"
45 #include "services/diagnosticFramework.hpp"
46 #include "services/heapDumper.hpp"
47 #include "services/management.hpp"
48 #include "services/writeableFlags.hpp"
49 #include "utilities/debug.hpp"
50 #include "utilities/formatBuffer.hpp"
51 #include "utilities/macros.hpp"
52
53
54 static void loadAgentModule(TRAPS) {
55 ResourceMark rm(THREAD);
56 HandleMark hm(THREAD);
57
58 JavaValue result(T_OBJECT);
59 Handle h_module_name = java_lang_String::create_from_str("jdk.management.agent", CHECK);
60 JavaCalls::call_static(&result,
61 SystemDictionary::module_Modules_klass(),
62 vmSymbols::loadModule_name(),
63 vmSymbols::loadModule_signature(),
64 h_module_name,
65 THREAD);
66 }
67
68 void DCmdRegistrant::register_dcmds(){
69 // Registration of the diagnostic commands
70 // First argument specifies which interfaces will export the command
71 // Second argument specifies if the command is enabled
72 // Third argument specifies if the command is hidden
73 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI
74 | DCmd_Source_MBean;
75 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(full_export, true, false));
76 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(full_export, true, false));
77 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(full_export, true, false));
78 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(full_export, true, false));
79 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(full_export, true, false));
80 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SetVMFlagDCmd>(full_export, true, false));
81 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMDynamicLibrariesDCmd>(full_export, true, false));
82 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(full_export, true, false));
83 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMInfoDCmd>(full_export, true, false));
84 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(full_export, true, false));
85 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(full_export, true, false));
86 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapInfoDCmd>(full_export, true, false));
87 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<FinalizerInfoDCmd>(full_export, true, false));
88 #if INCLUDE_SERVICES
89 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false));
90 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(full_export, true, false));
91 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(full_export, true, false));
92 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemDictionaryDCmd>(full_export, true, false));
93 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHierarchyDCmd>(full_export, true, false));
94 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SymboltableDCmd>(full_export, true, false));
95 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<StringtableDCmd>(full_export, true, false));
96 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<metaspace::MetaspaceDCmd>(full_export, true, false));
97 #if INCLUDE_JVMTI // Both JVMTI and SERVICES have to be enabled to have this dcmd
98 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIAgentLoadDCmd>(full_export, true, false));
99 #endif // INCLUDE_JVMTI
100 #endif // INCLUDE_SERVICES
101 #if INCLUDE_JVMTI
102 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIDataDumpDCmd>(full_export, true, false));
103 #endif // INCLUDE_JVMTI
104 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false));
105 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false));
106 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderHierarchyDCmd>(full_export, true, false));
107 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false));
108 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false));
109 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false));
110 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<TouchedMethodsDCmd>(full_export, true, false));
111 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeHeapAnalyticsDCmd>(full_export, true, false));
112
113 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesPrintDCmd>(full_export, true, false));
114 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesAddDCmd>(full_export, true, false));
115 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesRemoveDCmd>(full_export, true, false));
116 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesClearDCmd>(full_export, true, false));
117
118 // Enhanced JMX Agent Support
119 // These commands won't be exported via the DiagnosticCommandMBean until an
120 // appropriate permission is created for them
121 uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI;
122 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false));
123 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false));
124 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false));
125 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStatusDCmd>(jmx_agent_export_flags, true,false));
126
127 }
128
129 #ifndef HAVE_EXTRA_DCMD
130 void DCmdRegistrant::register_dcmds_ext(){
131 // Do nothing here
132 }
133 #endif
134
135
136 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
137 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
138 _cmd("command name", "The name of the command for which we want help",
139 "STRING", false) {
140 _dcmdparser.add_dcmd_option(&_all);
141 _dcmdparser.add_dcmd_argument(&_cmd);
142 };
143
144
145 static int compare_strings(const char** s1, const char** s2) {
146 return ::strcmp(*s1, *s2);
147 }
148
149 void HelpDCmd::execute(DCmdSource source, TRAPS) {
150 if (_all.value()) {
151 GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list(source);
152 cmd_list->sort(compare_strings);
153 for (int i = 0; i < cmd_list->length(); i++) {
154 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
155 strlen(cmd_list->at(i)));
156 output()->print_cr("%s%s", factory->name(),
157 factory->is_enabled() ? "" : " [disabled]");
158 output()->print_cr("\t%s", factory->description());
159 output()->cr();
160 factory = factory->next();
161 }
162 } else if (_cmd.has_value()) {
163 DCmd* cmd = NULL;
164 DCmdFactory* factory = DCmdFactory::factory(source, _cmd.value(),
165 strlen(_cmd.value()));
166 if (factory != NULL) {
167 output()->print_cr("%s%s", factory->name(),
168 factory->is_enabled() ? "" : " [disabled]");
169 output()->print_cr("%s", factory->description());
170 output()->print_cr("\nImpact: %s", factory->impact());
171 JavaPermission p = factory->permission();
172 if(p._class != NULL) {
173 if(p._action != NULL) {
174 output()->print_cr("\nPermission: %s(%s, %s)",
175 p._class, p._name == NULL ? "null" : p._name, p._action);
176 } else {
177 output()->print_cr("\nPermission: %s(%s)",
178 p._class, p._name == NULL ? "null" : p._name);
179 }
180 }
181 output()->cr();
182 cmd = factory->create_resource_instance(output());
183 if (cmd != NULL) {
184 DCmdMark mark(cmd);
185 cmd->print_help(factory->name());
186 }
187 } else {
188 output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value());
189 }
190 } else {
191 output()->print_cr("The following commands are available:");
192 GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(source);
193 cmd_list->sort(compare_strings);
194 for (int i = 0; i < cmd_list->length(); i++) {
195 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
196 strlen(cmd_list->at(i)));
197 output()->print_cr("%s%s", factory->name(),
198 factory->is_enabled() ? "" : " [disabled]");
199 factory = factory->_next;
200 }
201 output()->print_cr("\nFor more information about a specific command use 'help <command>'.");
202 }
203 }
204
205 int HelpDCmd::num_arguments() {
206 ResourceMark rm;
207 HelpDCmd* dcmd = new HelpDCmd(NULL, false);
208 if (dcmd != NULL) {
209 DCmdMark mark(dcmd);
210 return dcmd->_dcmdparser.num_arguments();
211 } else {
212 return 0;
213 }
214 }
215
216 void VersionDCmd::execute(DCmdSource source, TRAPS) {
217 output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(),
218 Abstract_VM_Version::vm_release());
219 JDK_Version jdk_version = JDK_Version::current();
220 if (jdk_version.patch_version() > 0) {
221 output()->print_cr("JDK %d.%d.%d.%d", jdk_version.major_version(),
222 jdk_version.minor_version(), jdk_version.security_version(),
223 jdk_version.patch_version());
224 } else {
225 output()->print_cr("JDK %d.%d.%d", jdk_version.major_version(),
226 jdk_version.minor_version(), jdk_version.security_version());
227 }
228 }
229
230 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) :
231 DCmdWithParser(output, heap),
232 _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") {
233 _dcmdparser.add_dcmd_option(&_all);
234 }
235
236 void PrintVMFlagsDCmd::execute(DCmdSource source, TRAPS) {
237 if (_all.value()) {
238 JVMFlag::printFlags(output(), true);
239 } else {
240 JVMFlag::printSetFlags(output());
241 }
242 }
243
244 int PrintVMFlagsDCmd::num_arguments() {
245 ResourceMark rm;
246 PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false);
247 if (dcmd != NULL) {
248 DCmdMark mark(dcmd);
249 return dcmd->_dcmdparser.num_arguments();
250 } else {
251 return 0;
252 }
253 }
254
255 SetVMFlagDCmd::SetVMFlagDCmd(outputStream* output, bool heap) :
256 DCmdWithParser(output, heap),
257 _flag("flag name", "The name of the flag we want to set",
258 "STRING", true),
259 _value("string value", "The value we want to set", "STRING", false) {
260 _dcmdparser.add_dcmd_argument(&_flag);
261 _dcmdparser.add_dcmd_argument(&_value);
262 }
263
264 void SetVMFlagDCmd::execute(DCmdSource source, TRAPS) {
265 const char* val = NULL;
266 if (_value.value() != NULL) {
267 val = _value.value();
268 }
269
270 FormatBuffer<80> err_msg("%s", "");
271 int ret = WriteableFlags::set_flag(_flag.value(), val, JVMFlag::MANAGEMENT, err_msg);
272
273 if (ret != JVMFlag::SUCCESS) {
274 output()->print_cr("%s", err_msg.buffer());
275 }
276 }
277
278 int SetVMFlagDCmd::num_arguments() {
279 ResourceMark rm;
280 SetVMFlagDCmd* dcmd = new SetVMFlagDCmd(NULL, false);
281 if (dcmd != NULL) {
282 DCmdMark mark(dcmd);
283 return dcmd->_dcmdparser.num_arguments();
284 } else {
285 return 0;
286 }
287 }
288
289 void JVMTIDataDumpDCmd::execute(DCmdSource source, TRAPS) {
290 if (JvmtiExport::should_post_data_dump()) {
291 JvmtiExport::post_data_dump();
292 }
293 }
294
295 #if INCLUDE_SERVICES
296 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) :
297 DCmdWithParser(output, heap),
298 _libpath("library path", "Absolute path of the JVMTI agent to load.",
299 "STRING", true),
300 _option("agent option", "Option string to pass the agent.", "STRING", false) {
301 _dcmdparser.add_dcmd_argument(&_libpath);
302 _dcmdparser.add_dcmd_argument(&_option);
303 }
304
305 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) {
306
307 if (_libpath.value() == NULL) {
308 output()->print_cr("JVMTI.agent_load dcmd needs library path.");
309 return;
310 }
311
312 char *suffix = strrchr(_libpath.value(), '.');
313 bool is_java_agent = (suffix != NULL) && (strncmp(".jar", suffix, 4) == 0);
314
315 if (is_java_agent) {
316 if (_option.value() == NULL) {
317 JvmtiExport::load_agent_library("instrument", "false",
318 _libpath.value(), output());
319 } else {
320 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2;
321 if (opt_len > 4096) {
322 output()->print_cr("JVMTI agent attach failed: Options is too long.");
323 return;
324 }
325
326 char *opt = (char *)os::malloc(opt_len, mtInternal);
327 if (opt == NULL) {
328 output()->print_cr("JVMTI agent attach failed: "
329 "Could not allocate " SIZE_FORMAT " bytes for argument.",
330 opt_len);
331 return;
332 }
333
334 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value());
335 JvmtiExport::load_agent_library("instrument", "false", opt, output());
336
337 os::free(opt);
338 }
339 } else {
340 JvmtiExport::load_agent_library(_libpath.value(), "true",
341 _option.value(), output());
342 }
343 }
344
345 int JVMTIAgentLoadDCmd::num_arguments() {
346 ResourceMark rm;
347 JVMTIAgentLoadDCmd* dcmd = new JVMTIAgentLoadDCmd(NULL, false);
348 if (dcmd != NULL) {
349 DCmdMark mark(dcmd);
350 return dcmd->_dcmdparser.num_arguments();
351 } else {
352 return 0;
353 }
354 }
355 #endif // INCLUDE_SERVICES
356
357 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) {
358 // load VMSupport
359 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
360 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
361 InstanceKlass* ik = InstanceKlass::cast(k);
362 if (ik->should_be_initialized()) {
363 ik->initialize(THREAD);
364 }
365 if (HAS_PENDING_EXCEPTION) {
366 java_lang_Throwable::print(PENDING_EXCEPTION, output());
367 output()->cr();
368 CLEAR_PENDING_EXCEPTION;
369 return;
370 }
371
372 // invoke the serializePropertiesToByteArray method
373 JavaValue result(T_OBJECT);
374 JavaCallArguments args;
375
376 Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature();
377 JavaCalls::call_static(&result,
378 ik,
379 vmSymbols::serializePropertiesToByteArray_name(),
380 signature,
381 &args,
382 THREAD);
383 if (HAS_PENDING_EXCEPTION) {
384 java_lang_Throwable::print(PENDING_EXCEPTION, output());
385 output()->cr();
386 CLEAR_PENDING_EXCEPTION;
387 return;
388 }
389
390 // The result should be a [B
391 oop res = (oop)result.get_jobject();
392 assert(res->is_typeArray(), "just checking");
393 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking");
394
395 // copy the bytes to the output stream
396 typeArrayOop ba = typeArrayOop(res);
397 jbyte* addr = typeArrayOop(res)->byte_at_addr(0);
398 output()->print_raw((const char*)addr, ba->length());
399 }
400
401 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) :
402 DCmdWithParser(output, heap),
403 _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") {
404 _dcmdparser.add_dcmd_option(&_date);
405 }
406
407 void VMUptimeDCmd::execute(DCmdSource source, TRAPS) {
408 if (_date.value()) {
409 output()->date_stamp(true, "", ": ");
410 }
411 output()->time_stamp().update_to(tty->time_stamp().ticks());
412 output()->stamp();
413 output()->print_cr(" s");
414 }
415
416 int VMUptimeDCmd::num_arguments() {
417 ResourceMark rm;
418 VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false);
419 if (dcmd != NULL) {
420 DCmdMark mark(dcmd);
421 return dcmd->_dcmdparser.num_arguments();
422 } else {
423 return 0;
424 }
425 }
426
427 void VMInfoDCmd::execute(DCmdSource source, TRAPS) {
428 VMError::print_vm_info(_output);
429 }
430
431 void SystemGCDCmd::execute(DCmdSource source, TRAPS) {
432 Universe::heap()->collect(GCCause::_dcmd_gc_run);
433 }
434
435 void RunFinalizationDCmd::execute(DCmdSource source, TRAPS) {
436 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
437 true, CHECK);
438 JavaValue result(T_VOID);
439 JavaCalls::call_static(&result, k,
440 vmSymbols::run_finalization_name(),
441 vmSymbols::void_method_signature(), CHECK);
442 }
443
444 void HeapInfoDCmd::execute(DCmdSource source, TRAPS) {
445 MutexLocker hl(Heap_lock);
446 Universe::heap()->print_on(output());
447 }
448
449 void FinalizerInfoDCmd::execute(DCmdSource source, TRAPS) {
450 ResourceMark rm;
451
452 Klass* k = SystemDictionary::resolve_or_fail(
453 vmSymbols::finalizer_histogram_klass(), true, CHECK);
454
455 JavaValue result(T_ARRAY);
456
457 // We are calling lang.ref.FinalizerHistogram.getFinalizerHistogram() method
458 // and expect it to return array of FinalizerHistogramEntry as Object[]
459
460 JavaCalls::call_static(&result, k,
461 vmSymbols::get_finalizer_histogram_name(),
462 vmSymbols::void_finalizer_histogram_entry_array_signature(), CHECK);
463
464 objArrayOop result_oop = (objArrayOop) result.get_jobject();
465 if (result_oop->length() == 0) {
466 output()->print_cr("No instances waiting for finalization found");
467 return;
468 }
469
470 oop foop = result_oop->obj_at(0);
471 InstanceKlass* ik = InstanceKlass::cast(foop->klass());
472
473 fieldDescriptor count_fd, name_fd;
474
475 Klass* count_res = ik->find_field(
476 vmSymbols::finalizer_histogram_entry_count_field(), vmSymbols::int_signature(), &count_fd);
477
478 Klass* name_res = ik->find_field(
479 vmSymbols::finalizer_histogram_entry_name_field(), vmSymbols::string_signature(), &name_fd);
480
481 assert(count_res != NULL && name_res != NULL, "Unexpected layout of FinalizerHistogramEntry");
482
483 output()->print_cr("Unreachable instances waiting for finalization");
484 output()->print_cr("#instances class name");
485 output()->print_cr("-----------------------");
486
487 for (int i = 0; i < result_oop->length(); ++i) {
488 oop element_oop = result_oop->obj_at(i);
489 oop str_oop = element_oop->obj_field(name_fd.offset());
490 char *name = java_lang_String::as_utf8_string(str_oop);
491 int count = element_oop->int_field(count_fd.offset());
492 output()->print_cr("%10d %s", count, name);
493 }
494 }
495
496 #if INCLUDE_SERVICES // Heap dumping/inspection supported
497 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
498 DCmdWithParser(output, heap),
499 _filename("filename","Name of the dump file", "STRING",true),
500 _all("-all", "Dump all objects, including unreachable objects",
501 "BOOLEAN", false, "false") {
502 _dcmdparser.add_dcmd_option(&_all);
503 _dcmdparser.add_dcmd_argument(&_filename);
504 }
505
506 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) {
507 // Request a full GC before heap dump if _all is false
508 // This helps reduces the amount of unreachable objects in the dump
509 // and makes it easier to browse.
510 HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
511 int res = dumper.dump(_filename.value());
512 if (res == 0) {
513 output()->print_cr("Heap dump file created");
514 } else {
515 // heap dump failed
516 ResourceMark rm;
517 char* error = dumper.error_as_C_string();
518 if (error == NULL) {
519 output()->print_cr("Dump failed - reason unknown");
520 } else {
521 output()->print_cr("%s", error);
522 }
523 }
524 }
525
526 int HeapDumpDCmd::num_arguments() {
527 ResourceMark rm;
528 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
529 if (dcmd != NULL) {
530 DCmdMark mark(dcmd);
531 return dcmd->_dcmdparser.num_arguments();
532 } else {
533 return 0;
534 }
535 }
536
537 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
538 DCmdWithParser(output, heap),
539 _all("-all", "Inspect all objects, including unreachable objects",
540 "BOOLEAN", false, "false") {
541 _dcmdparser.add_dcmd_option(&_all);
542 }
543
544 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) {
545 VM_GC_HeapInspection heapop(output(),
546 !_all.value() /* request full gc if false */);
547 VMThread::execute(&heapop);
548 }
549
550 int ClassHistogramDCmd::num_arguments() {
551 ResourceMark rm;
552 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
553 if (dcmd != NULL) {
554 DCmdMark mark(dcmd);
555 return dcmd->_dcmdparser.num_arguments();
556 } else {
557 return 0;
558 }
559 }
560
561 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total"
562 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) :
563 DCmdWithParser(output, heap),
564 _all("-all", "Show all columns",
565 "BOOLEAN", false, "false"),
566 _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets",
567 "BOOLEAN", false, "false"),
568 _help("-help", "Show meaning of all the columns",
569 "BOOLEAN", false, "false"),
570 _columns("columns", "Comma-separated list of all the columns to show. "
571 "If not specified, the following columns are shown: " DEFAULT_COLUMNS,
572 "STRING", false) {
573 _dcmdparser.add_dcmd_option(&_all);
574 _dcmdparser.add_dcmd_option(&_csv);
575 _dcmdparser.add_dcmd_option(&_help);
576 _dcmdparser.add_dcmd_argument(&_columns);
577 }
578
579 void ClassStatsDCmd::execute(DCmdSource source, TRAPS) {
580 VM_GC_HeapInspection heapop(output(),
581 true /* request_full_gc */);
582 heapop.set_csv_format(_csv.value());
583 heapop.set_print_help(_help.value());
584 heapop.set_print_class_stats(true);
585 if (_all.value()) {
586 if (_columns.has_value()) {
587 output()->print_cr("Cannot specify -all and individual columns at the same time");
588 return;
589 } else {
590 heapop.set_columns(NULL);
591 }
592 } else {
593 if (_columns.has_value()) {
594 heapop.set_columns(_columns.value());
595 } else {
596 heapop.set_columns(DEFAULT_COLUMNS);
597 }
598 }
599 VMThread::execute(&heapop);
600 }
601
602 int ClassStatsDCmd::num_arguments() {
603 ResourceMark rm;
604 ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false);
605 if (dcmd != NULL) {
606 DCmdMark mark(dcmd);
607 return dcmd->_dcmdparser.num_arguments();
608 } else {
609 return 0;
610 }
611 }
612 #endif // INCLUDE_SERVICES
613
614 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
615 DCmdWithParser(output, heap),
616 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false"),
617 _extended("-e", "print extended thread information", "BOOLEAN", false, "false") {
618 _dcmdparser.add_dcmd_option(&_locks);
619 _dcmdparser.add_dcmd_option(&_extended);
620 }
621
622 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) {
623 // thread stacks
624 VM_PrintThreads op1(output(), _locks.value(), _extended.value());
625 VMThread::execute(&op1);
626
627 // JNI global handles
628 VM_PrintJNI op2(output());
629 VMThread::execute(&op2);
630
631 // Deadlock detection
632 VM_FindDeadlocks op3(output());
633 VMThread::execute(&op3);
634 }
635
636 int ThreadDumpDCmd::num_arguments() {
637 ResourceMark rm;
638 ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false);
639 if (dcmd != NULL) {
640 DCmdMark mark(dcmd);
641 return dcmd->_dcmdparser.num_arguments();
642 } else {
643 return 0;
644 }
645 }
646
647 // Enhanced JMX Agent support
648
649 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) :
650
651 DCmdWithParser(output, heap_allocated),
652
653 _config_file
654 ("config.file",
655 "set com.sun.management.config.file", "STRING", false),
656
657 _jmxremote_host
658 ("jmxremote.host",
659 "set com.sun.management.jmxremote.host", "STRING", false),
660
661 _jmxremote_port
662 ("jmxremote.port",
663 "set com.sun.management.jmxremote.port", "STRING", false),
664
665 _jmxremote_rmi_port
666 ("jmxremote.rmi.port",
667 "set com.sun.management.jmxremote.rmi.port", "STRING", false),
668
669 _jmxremote_ssl
670 ("jmxremote.ssl",
671 "set com.sun.management.jmxremote.ssl", "STRING", false),
672
673 _jmxremote_registry_ssl
674 ("jmxremote.registry.ssl",
675 "set com.sun.management.jmxremote.registry.ssl", "STRING", false),
676
677 _jmxremote_authenticate
678 ("jmxremote.authenticate",
679 "set com.sun.management.jmxremote.authenticate", "STRING", false),
680
681 _jmxremote_password_file
682 ("jmxremote.password.file",
683 "set com.sun.management.jmxremote.password.file", "STRING", false),
684
685 _jmxremote_access_file
686 ("jmxremote.access.file",
687 "set com.sun.management.jmxremote.access.file", "STRING", false),
688
689 _jmxremote_login_config
690 ("jmxremote.login.config",
691 "set com.sun.management.jmxremote.login.config", "STRING", false),
692
693 _jmxremote_ssl_enabled_cipher_suites
694 ("jmxremote.ssl.enabled.cipher.suites",
695 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false),
696
697 _jmxremote_ssl_enabled_protocols
698 ("jmxremote.ssl.enabled.protocols",
699 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false),
700
701 _jmxremote_ssl_need_client_auth
702 ("jmxremote.ssl.need.client.auth",
703 "set com.sun.management.jmxremote.need.client.auth", "STRING", false),
704
705 _jmxremote_ssl_config_file
706 ("jmxremote.ssl.config.file",
707 "set com.sun.management.jmxremote.ssl_config_file", "STRING", false),
708
709 // JDP Protocol support
710 _jmxremote_autodiscovery
711 ("jmxremote.autodiscovery",
712 "set com.sun.management.jmxremote.autodiscovery", "STRING", false),
713
714 _jdp_port
715 ("jdp.port",
716 "set com.sun.management.jdp.port", "INT", false),
717
718 _jdp_address
719 ("jdp.address",
720 "set com.sun.management.jdp.address", "STRING", false),
721
722 _jdp_source_addr
723 ("jdp.source_addr",
724 "set com.sun.management.jdp.source_addr", "STRING", false),
725
726 _jdp_ttl
727 ("jdp.ttl",
728 "set com.sun.management.jdp.ttl", "INT", false),
729
730 _jdp_pause
731 ("jdp.pause",
732 "set com.sun.management.jdp.pause", "INT", false),
733
734 _jdp_name
735 ("jdp.name",
736 "set com.sun.management.jdp.name", "STRING", false)
737
738 {
739 _dcmdparser.add_dcmd_option(&_config_file);
740 _dcmdparser.add_dcmd_option(&_jmxremote_host);
741 _dcmdparser.add_dcmd_option(&_jmxremote_port);
742 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port);
743 _dcmdparser.add_dcmd_option(&_jmxremote_ssl);
744 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl);
745 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate);
746 _dcmdparser.add_dcmd_option(&_jmxremote_password_file);
747 _dcmdparser.add_dcmd_option(&_jmxremote_access_file);
748 _dcmdparser.add_dcmd_option(&_jmxremote_login_config);
749 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites);
750 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols);
751 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth);
752 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file);
753 _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery);
754 _dcmdparser.add_dcmd_option(&_jdp_port);
755 _dcmdparser.add_dcmd_option(&_jdp_address);
756 _dcmdparser.add_dcmd_option(&_jdp_source_addr);
757 _dcmdparser.add_dcmd_option(&_jdp_ttl);
758 _dcmdparser.add_dcmd_option(&_jdp_pause);
759 _dcmdparser.add_dcmd_option(&_jdp_name);
760 }
761
762
763 int JMXStartRemoteDCmd::num_arguments() {
764 ResourceMark rm;
765 JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false);
766 if (dcmd != NULL) {
767 DCmdMark mark(dcmd);
768 return dcmd->_dcmdparser.num_arguments();
769 } else {
770 return 0;
771 }
772 }
773
774
775 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) {
776 ResourceMark rm(THREAD);
777 HandleMark hm(THREAD);
778
779 // Load and initialize the jdk.internal.agent.Agent class
780 // invoke startRemoteManagementAgent(string) method to start
781 // the remote management server.
782 // throw java.lang.NoSuchMethodError if the method doesn't exist
783
784 loadAgentModule(CHECK);
785 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
786 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
787
788 JavaValue result(T_VOID);
789
790 // Pass all command line arguments to java as key=value,...
791 // All checks are done on java side
792
793 int len = 0;
794 stringStream options;
795 char comma[2] = {0,0};
796
797 // Leave default values on Agent.class side and pass only
798 // agruments explicitly set by user. All arguments passed
799 // to jcmd override properties with the same name set by
800 // command line with -D or by managmenent.properties
801 // file.
802 #define PUT_OPTION(a) \
803 do { \
804 if ( (a).is_set() ){ \
805 if ( *((a).type()) == 'I' ) { \
806 options.print("%scom.sun.management.%s=" JLONG_FORMAT, comma, (a).name(), (jlong)((a).value())); \
807 } else { \
808 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (char*)((a).value())); \
809 } \
810 comma[0] = ','; \
811 }\
812 } while(0);
813
814
815 PUT_OPTION(_config_file);
816 PUT_OPTION(_jmxremote_host);
817 PUT_OPTION(_jmxremote_port);
818 PUT_OPTION(_jmxremote_rmi_port);
819 PUT_OPTION(_jmxremote_ssl);
820 PUT_OPTION(_jmxremote_registry_ssl);
821 PUT_OPTION(_jmxremote_authenticate);
822 PUT_OPTION(_jmxremote_password_file);
823 PUT_OPTION(_jmxremote_access_file);
824 PUT_OPTION(_jmxremote_login_config);
825 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites);
826 PUT_OPTION(_jmxremote_ssl_enabled_protocols);
827 PUT_OPTION(_jmxremote_ssl_need_client_auth);
828 PUT_OPTION(_jmxremote_ssl_config_file);
829 PUT_OPTION(_jmxremote_autodiscovery);
830 PUT_OPTION(_jdp_port);
831 PUT_OPTION(_jdp_address);
832 PUT_OPTION(_jdp_source_addr);
833 PUT_OPTION(_jdp_ttl);
834 PUT_OPTION(_jdp_pause);
835 PUT_OPTION(_jdp_name);
836
837 #undef PUT_OPTION
838
839 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK);
840 JavaCalls::call_static(&result, k, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK);
841 }
842
843 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) :
844 DCmd(output, heap_allocated) {
845 // do nothing
846 }
847
848 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) {
849 ResourceMark rm(THREAD);
850 HandleMark hm(THREAD);
851
852 // Load and initialize the jdk.internal.agent.Agent class
853 // invoke startLocalManagementAgent(void) method to start
854 // the local management server
855 // throw java.lang.NoSuchMethodError if method doesn't exist
856
857 loadAgentModule(CHECK);
858 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
859 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
860
861 JavaValue result(T_VOID);
862 JavaCalls::call_static(&result, k, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK);
863 }
864
865 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) {
866 ResourceMark rm(THREAD);
867 HandleMark hm(THREAD);
868
869 // Load and initialize the jdk.internal.agent.Agent class
870 // invoke stopRemoteManagementAgent method to stop the
871 // management server
872 // throw java.lang.NoSuchMethodError if method doesn't exist
873
874 loadAgentModule(CHECK);
875 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
876 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
877
878 JavaValue result(T_VOID);
879 JavaCalls::call_static(&result, k, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK);
880 }
881
882 JMXStatusDCmd::JMXStatusDCmd(outputStream *output, bool heap_allocated) :
883 DCmd(output, heap_allocated) {
884 // do nothing
885 }
886
887 void JMXStatusDCmd::execute(DCmdSource source, TRAPS) {
888 ResourceMark rm(THREAD);
889 HandleMark hm(THREAD);
890
891 // Load and initialize the jdk.internal.agent.Agent class
892 // invoke getManagementAgentStatus() method to generate the status info
893 // throw java.lang.NoSuchMethodError if method doesn't exist
894
895 loadAgentModule(CHECK);
896 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
897 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
898
899 JavaValue result(T_OBJECT);
900 JavaCalls::call_static(&result, k, vmSymbols::getAgentStatus_name(), vmSymbols::void_string_signature(), CHECK);
901
902 jvalue* jv = (jvalue*) result.get_value_addr();
903 oop str = (oop) jv->l;
904 if (str != NULL) {
905 char* out = java_lang_String::as_utf8_string(str);
906 if (out) {
907 output()->print_cr("%s", out);
908 return;
909 }
910 }
911 output()->print_cr("Error obtaining management agent status");
912 }
913
914 VMDynamicLibrariesDCmd::VMDynamicLibrariesDCmd(outputStream *output, bool heap_allocated) :
915 DCmd(output, heap_allocated) {
916 // do nothing
917 }
918
919 void VMDynamicLibrariesDCmd::execute(DCmdSource source, TRAPS) {
920 os::print_dll_info(output());
921 output()->cr();
922 }
923
924 void CompileQueueDCmd::execute(DCmdSource source, TRAPS) {
925 VM_PrintCompileQueue printCompileQueueOp(output());
926 VMThread::execute(&printCompileQueueOp);
927 }
928
929 void CodeListDCmd::execute(DCmdSource source, TRAPS) {
930 CodeCache::print_codelist(output());
931 }
932
933 void CodeCacheDCmd::execute(DCmdSource source, TRAPS) {
934 CodeCache::print_layout(output());
935 }
936
937 //---< BEGIN >--- CodeHeap State Analytics.
938 CodeHeapAnalyticsDCmd::CodeHeapAnalyticsDCmd(outputStream* output, bool heap) :
939 DCmdWithParser(output, heap),
940 _function("function", "Function to be performed (aggregate, UsedSpace, FreeSpace, MethodCount, MethodSpace, MethodAge, MethodNames, discard", "STRING", false, "all"),
941 _granularity("granularity", "Detail level - smaller value -> more detail", "STRING", false, "4096") {
942 _dcmdparser.add_dcmd_argument(&_function);
943 _dcmdparser.add_dcmd_argument(&_granularity);
944 }
945
946 void CodeHeapAnalyticsDCmd::execute(DCmdSource source, TRAPS) {
947 CompileBroker::print_heapinfo(output(), _function.value(), _granularity.value());
948 }
949
950 int CodeHeapAnalyticsDCmd::num_arguments() {
951 ResourceMark rm;
952 CodeHeapAnalyticsDCmd* dcmd = new CodeHeapAnalyticsDCmd(NULL, false);
953 if (dcmd != NULL) {
954 DCmdMark mark(dcmd);
955 return dcmd->_dcmdparser.num_arguments();
956 } else {
957 return 0;
958 }
959 }
960 //---< END >--- CodeHeap State Analytics.
961
962 void CompilerDirectivesPrintDCmd::execute(DCmdSource source, TRAPS) {
963 DirectivesStack::print(output());
964 }
965
966 CompilerDirectivesAddDCmd::CompilerDirectivesAddDCmd(outputStream* output, bool heap) :
967 DCmdWithParser(output, heap),
968 _filename("filename","Name of the directives file", "STRING",true) {
969 _dcmdparser.add_dcmd_argument(&_filename);
970 }
971
972 void CompilerDirectivesAddDCmd::execute(DCmdSource source, TRAPS) {
973 DirectivesParser::parse_from_file(_filename.value(), output());
974 }
975
976 int CompilerDirectivesAddDCmd::num_arguments() {
977 ResourceMark rm;
978 CompilerDirectivesAddDCmd* dcmd = new CompilerDirectivesAddDCmd(NULL, false);
979 if (dcmd != NULL) {
980 DCmdMark mark(dcmd);
981 return dcmd->_dcmdparser.num_arguments();
982 } else {
983 return 0;
984 }
985 }
986
987 void CompilerDirectivesRemoveDCmd::execute(DCmdSource source, TRAPS) {
988 DirectivesStack::pop(1);
989 }
990
991 void CompilerDirectivesClearDCmd::execute(DCmdSource source, TRAPS) {
992 DirectivesStack::clear();
993 }
994 #if INCLUDE_SERVICES
995 ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) :
996 DCmdWithParser(output, heap),
997 _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"),
998 _print_subclasses("-s", "If a classname is specified, print its subclasses. "
999 "Otherwise only its superclasses are printed.", "BOOLEAN", false, "false"),
1000 _classname("classname", "Name of class whose hierarchy should be printed. "
1001 "If not specified, all class hierarchies are printed.",
1002 "STRING", false) {
1003 _dcmdparser.add_dcmd_option(&_print_interfaces);
1004 _dcmdparser.add_dcmd_option(&_print_subclasses);
1005 _dcmdparser.add_dcmd_argument(&_classname);
1006 }
1007
1008 void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) {
1009 VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(),
1010 _print_subclasses.value(), _classname.value());
1011 VMThread::execute(&printClassHierarchyOp);
1012 }
1013
1014 int ClassHierarchyDCmd::num_arguments() {
1015 ResourceMark rm;
1016 ClassHierarchyDCmd* dcmd = new ClassHierarchyDCmd(NULL, false);
1017 if (dcmd != NULL) {
1018 DCmdMark mark(dcmd);
1019 return dcmd->_dcmdparser.num_arguments();
1020 } else {
1021 return 0;
1022 }
1023 }
1024
1025 #endif
1026
1027 class VM_DumpTouchedMethods : public VM_Operation {
1028 private:
1029 outputStream* _out;
1030 public:
1031 VM_DumpTouchedMethods(outputStream* out) {
1032 _out = out;
1033 }
1034
1035 virtual VMOp_Type type() const { return VMOp_DumpTouchedMethods; }
1036
1037 virtual void doit() {
1038 Method::print_touched_methods(_out);
1039 }
1040 };
1041
1042 TouchedMethodsDCmd::TouchedMethodsDCmd(outputStream* output, bool heap) :
1043 DCmdWithParser(output, heap)
1044 {}
1045
1046 void TouchedMethodsDCmd::execute(DCmdSource source, TRAPS) {
1047 if (!LogTouchedMethods) {
1048 output()->print_cr("VM.print_touched_methods command requires -XX:+LogTouchedMethods");
1049 return;
1050 }
1051 VM_DumpTouchedMethods dumper(output());
1052 VMThread::execute(&dumper);
1053 }
1054
1055 int TouchedMethodsDCmd::num_arguments() {
1056 return 0;
1057 }