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