1 /*
2 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "jvm.h"
27 #include "classfile/classLoaderStats.hpp"
28 #include "classfile/compactHashtable.hpp"
29 #include "compiler/compileBroker.hpp"
30 #include "compiler/directivesParser.hpp"
31 #include "gc/shared/vmGCOperations.hpp"
32 #include "memory/metaspace/metaspaceDCmd.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "oops/objArrayOop.inline.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "oops/typeArrayOop.inline.hpp"
37 #include "runtime/globals.hpp"
38 #include "runtime/handles.inline.hpp"
39 #include "runtime/javaCalls.hpp"
40 #include "runtime/os.hpp"
41 #include "services/diagnosticArgument.hpp"
42 #include "services/diagnosticCommand.hpp"
43 #include "services/diagnosticFramework.hpp"
44 #include "services/heapDumper.hpp"
45 #include "services/management.hpp"
46 #include "services/writeableFlags.hpp"
47 #include "utilities/debug.hpp"
48 #include "utilities/formatBuffer.hpp"
49 #include "utilities/macros.hpp"
50
51
52 static void loadAgentModule(TRAPS) {
53 ResourceMark rm(THREAD);
54 HandleMark hm(THREAD);
55
56 JavaValue result(T_OBJECT);
57 Handle h_module_name = java_lang_String::create_from_str("jdk.management.agent", CHECK);
58 JavaCalls::call_static(&result,
59 SystemDictionary::module_Modules_klass(),
60 vmSymbols::loadModule_name(),
61 vmSymbols::loadModule_signature(),
62 h_module_name,
63 THREAD);
64 }
65
66 void DCmdRegistrant::register_dcmds(){
67 // Registration of the diagnostic commands
68 // First argument specifies which interfaces will export the command
69 // Second argument specifies if the command is enabled
70 // Third argument specifies if the command is hidden
71 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI
72 | DCmd_Source_MBean;
73 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(full_export, true, false));
74 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(full_export, true, false));
75 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(full_export, true, false));
76 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(full_export, true, false));
77 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(full_export, true, false));
78 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SetVMFlagDCmd>(full_export, true, false));
79 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMDynamicLibrariesDCmd>(full_export, true, false));
80 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(full_export, true, false));
81 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMInfoDCmd>(full_export, true, false));
82 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(full_export, true, false));
83 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(full_export, true, false));
84 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapInfoDCmd>(full_export, true, false));
85 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<FinalizerInfoDCmd>(full_export, true, false));
86 #if INCLUDE_SERVICES
87 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false));
88 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(full_export, true, false));
89 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(full_export, true, false));
90 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemDictionaryDCmd>(full_export, true, false));
91 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHierarchyDCmd>(full_export, true, false));
92 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SymboltableDCmd>(full_export, true, false));
93 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<StringtableDCmd>(full_export, true, false));
94 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<metaspace::MetaspaceDCmd>(full_export, true, false));
95 #if INCLUDE_JVMTI // Both JVMTI and SERVICES have to be enabled to have this dcmd
96 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIAgentLoadDCmd>(full_export, true, false));
97 #endif // INCLUDE_JVMTI
98 #endif // INCLUDE_SERVICES
99 #if INCLUDE_JVMTI
100 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIDataDumpDCmd>(full_export, true, false));
101 #endif // INCLUDE_JVMTI
102 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false));
103 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false));
104 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false));
105 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false));
106 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false));
107 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<TouchedMethodsDCmd>(full_export, true, false));
108 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeHeapAnalyticsDCmd>(full_export, true, false));
109
110 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesPrintDCmd>(full_export, true, false));
111 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesAddDCmd>(full_export, true, false));
112 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesRemoveDCmd>(full_export, true, false));
113 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesClearDCmd>(full_export, true, false));
114
115 // Enhanced JMX Agent Support
116 // These commands won't be exported via the DiagnosticCommandMBean until an
117 // appropriate permission is created for them
118 uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI;
119 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false));
120 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false));
121 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false));
122 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStatusDCmd>(jmx_agent_export_flags, true,false));
123
124 }
125
126 #ifndef HAVE_EXTRA_DCMD
127 void DCmdRegistrant::register_dcmds_ext(){
128 // Do nothing here
129 }
130 #endif
131
132
133 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
134 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
135 _cmd("command name", "The name of the command for which we want help",
136 "STRING", false) {
137 _dcmdparser.add_dcmd_option(&_all);
138 _dcmdparser.add_dcmd_argument(&_cmd);
139 };
140
141
142 static int compare_strings(const char** s1, const char** s2) {
143 return ::strcmp(*s1, *s2);
144 }
145
146 void HelpDCmd::execute(DCmdSource source, TRAPS) {
147 if (_all.value()) {
148 GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list(source);
149 cmd_list->sort(compare_strings);
150 for (int i = 0; i < cmd_list->length(); i++) {
151 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
152 strlen(cmd_list->at(i)));
153 output()->print_cr("%s%s", factory->name(),
154 factory->is_enabled() ? "" : " [disabled]");
155 output()->print_cr("\t%s", factory->description());
156 output()->cr();
157 factory = factory->next();
158 }
159 } else if (_cmd.has_value()) {
160 DCmd* cmd = NULL;
161 DCmdFactory* factory = DCmdFactory::factory(source, _cmd.value(),
162 strlen(_cmd.value()));
163 if (factory != NULL) {
164 output()->print_cr("%s%s", factory->name(),
165 factory->is_enabled() ? "" : " [disabled]");
166 output()->print_cr("%s", factory->description());
167 output()->print_cr("\nImpact: %s", factory->impact());
168 JavaPermission p = factory->permission();
169 if(p._class != NULL) {
170 if(p._action != NULL) {
171 output()->print_cr("\nPermission: %s(%s, %s)",
172 p._class, p._name == NULL ? "null" : p._name, p._action);
173 } else {
174 output()->print_cr("\nPermission: %s(%s)",
175 p._class, p._name == NULL ? "null" : p._name);
176 }
177 }
178 output()->cr();
179 cmd = factory->create_resource_instance(output());
180 if (cmd != NULL) {
181 DCmdMark mark(cmd);
182 cmd->print_help(factory->name());
183 }
184 } else {
185 output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value());
186 }
187 } else {
188 output()->print_cr("The following commands are available:");
189 GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(source);
190 cmd_list->sort(compare_strings);
191 for (int i = 0; i < cmd_list->length(); i++) {
192 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
193 strlen(cmd_list->at(i)));
194 output()->print_cr("%s%s", factory->name(),
195 factory->is_enabled() ? "" : " [disabled]");
196 factory = factory->_next;
197 }
198 output()->print_cr("\nFor more information about a specific command use 'help <command>'.");
199 }
200 }
201
202 int HelpDCmd::num_arguments() {
203 ResourceMark rm;
204 HelpDCmd* dcmd = new HelpDCmd(NULL, false);
205 if (dcmd != NULL) {
206 DCmdMark mark(dcmd);
207 return dcmd->_dcmdparser.num_arguments();
208 } else {
209 return 0;
210 }
211 }
212
213 void VersionDCmd::execute(DCmdSource source, TRAPS) {
214 output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(),
215 Abstract_VM_Version::vm_release());
216 JDK_Version jdk_version = JDK_Version::current();
217 if (jdk_version.patch_version() > 0) {
218 output()->print_cr("JDK %d.%d.%d.%d", jdk_version.major_version(),
219 jdk_version.minor_version(), jdk_version.security_version(),
220 jdk_version.patch_version());
221 } else {
222 output()->print_cr("JDK %d.%d.%d", jdk_version.major_version(),
223 jdk_version.minor_version(), jdk_version.security_version());
224 }
225 }
226
227 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) :
228 DCmdWithParser(output, heap),
229 _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") {
230 _dcmdparser.add_dcmd_option(&_all);
231 }
232
233 void PrintVMFlagsDCmd::execute(DCmdSource source, TRAPS) {
234 if (_all.value()) {
235 CommandLineFlags::printFlags(output(), true);
236 } else {
237 CommandLineFlags::printSetFlags(output());
238 }
239 }
240
241 int PrintVMFlagsDCmd::num_arguments() {
242 ResourceMark rm;
243 PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false);
244 if (dcmd != NULL) {
245 DCmdMark mark(dcmd);
246 return dcmd->_dcmdparser.num_arguments();
247 } else {
248 return 0;
249 }
250 }
251
252 SetVMFlagDCmd::SetVMFlagDCmd(outputStream* output, bool heap) :
253 DCmdWithParser(output, heap),
254 _flag("flag name", "The name of the flag we want to set",
255 "STRING", true),
256 _value("string value", "The value we want to set", "STRING", false) {
257 _dcmdparser.add_dcmd_argument(&_flag);
258 _dcmdparser.add_dcmd_argument(&_value);
259 }
260
261 void SetVMFlagDCmd::execute(DCmdSource source, TRAPS) {
262 const char* val = NULL;
263 if (_value.value() != NULL) {
264 val = _value.value();
265 }
266
267 FormatBuffer<80> err_msg("%s", "");
268 int ret = WriteableFlags::set_flag(_flag.value(), val, Flag::MANAGEMENT, err_msg);
269
270 if (ret != Flag::SUCCESS) {
271 output()->print_cr("%s", err_msg.buffer());
272 }
273 }
274
275 int SetVMFlagDCmd::num_arguments() {
276 ResourceMark rm;
277 SetVMFlagDCmd* dcmd = new SetVMFlagDCmd(NULL, false);
278 if (dcmd != NULL) {
279 DCmdMark mark(dcmd);
280 return dcmd->_dcmdparser.num_arguments();
281 } else {
282 return 0;
283 }
284 }
285
286 void JVMTIDataDumpDCmd::execute(DCmdSource source, TRAPS) {
287 if (JvmtiExport::should_post_data_dump()) {
288 JvmtiExport::post_data_dump();
289 }
290 }
291
292 #if INCLUDE_SERVICES
293 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) :
294 DCmdWithParser(output, heap),
295 _libpath("library path", "Absolute path of the JVMTI agent to load.",
296 "STRING", true),
297 _option("agent option", "Option string to pass the agent.", "STRING", false) {
298 _dcmdparser.add_dcmd_argument(&_libpath);
299 _dcmdparser.add_dcmd_argument(&_option);
300 }
301
302 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) {
303
304 if (_libpath.value() == NULL) {
305 output()->print_cr("JVMTI.agent_load dcmd needs library path.");
306 return;
307 }
308
309 char *suffix = strrchr(_libpath.value(), '.');
310 bool is_java_agent = (suffix != NULL) && (strncmp(".jar", suffix, 4) == 0);
311
312 if (is_java_agent) {
313 if (_option.value() == NULL) {
314 JvmtiExport::load_agent_library("instrument", "false",
315 _libpath.value(), output());
316 } else {
317 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2;
318 if (opt_len > 4096) {
319 output()->print_cr("JVMTI agent attach failed: Options is too long.");
320 return;
321 }
322
323 char *opt = (char *)os::malloc(opt_len, mtInternal);
324 if (opt == NULL) {
325 output()->print_cr("JVMTI agent attach failed: "
326 "Could not allocate " SIZE_FORMAT " bytes for argument.",
327 opt_len);
328 return;
329 }
330
331 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value());
332 JvmtiExport::load_agent_library("instrument", "false", opt, output());
333
334 os::free(opt);
335 }
336 } else {
337 JvmtiExport::load_agent_library(_libpath.value(), "true",
338 _option.value(), output());
339 }
340 }
341
342 int JVMTIAgentLoadDCmd::num_arguments() {
343 ResourceMark rm;
344 JVMTIAgentLoadDCmd* dcmd = new JVMTIAgentLoadDCmd(NULL, false);
345 if (dcmd != NULL) {
346 DCmdMark mark(dcmd);
347 return dcmd->_dcmdparser.num_arguments();
348 } else {
349 return 0;
350 }
351 }
352 #endif // INCLUDE_SERVICES
353
354 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) {
355 // load VMSupport
356 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport();
357 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
358 InstanceKlass* ik = InstanceKlass::cast(k);
359 if (ik->should_be_initialized()) {
360 ik->initialize(THREAD);
361 }
362 if (HAS_PENDING_EXCEPTION) {
363 java_lang_Throwable::print(PENDING_EXCEPTION, output());
364 output()->cr();
365 CLEAR_PENDING_EXCEPTION;
366 return;
367 }
368
369 // invoke the serializePropertiesToByteArray method
370 JavaValue result(T_OBJECT);
371 JavaCallArguments args;
372
373 Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature();
374 JavaCalls::call_static(&result,
375 ik,
376 vmSymbols::serializePropertiesToByteArray_name(),
377 signature,
378 &args,
379 THREAD);
380 if (HAS_PENDING_EXCEPTION) {
381 java_lang_Throwable::print(PENDING_EXCEPTION, output());
382 output()->cr();
383 CLEAR_PENDING_EXCEPTION;
384 return;
385 }
386
387 // The result should be a [B
388 oop res = (oop)result.get_jobject();
389 assert(res->is_typeArray(), "just checking");
390 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking");
391
392 // copy the bytes to the output stream
393 typeArrayOop ba = typeArrayOop(res);
394 jbyte* addr = typeArrayOop(res)->byte_at_addr(0);
395 output()->print_raw((const char*)addr, ba->length());
396 }
397
398 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) :
399 DCmdWithParser(output, heap),
400 _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") {
401 _dcmdparser.add_dcmd_option(&_date);
402 }
403
404 void VMUptimeDCmd::execute(DCmdSource source, TRAPS) {
405 if (_date.value()) {
406 output()->date_stamp(true, "", ": ");
407 }
408 output()->time_stamp().update_to(tty->time_stamp().ticks());
409 output()->stamp();
410 output()->print_cr(" s");
411 }
412
413 int VMUptimeDCmd::num_arguments() {
414 ResourceMark rm;
415 VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false);
416 if (dcmd != NULL) {
417 DCmdMark mark(dcmd);
418 return dcmd->_dcmdparser.num_arguments();
419 } else {
420 return 0;
421 }
422 }
423
424 void VMInfoDCmd::execute(DCmdSource source, TRAPS) {
425 VMError::print_vm_info(_output);
426 }
427
428 void SystemGCDCmd::execute(DCmdSource source, TRAPS) {
429 Universe::heap()->collect(GCCause::_dcmd_gc_run);
430 }
431
432 void RunFinalizationDCmd::execute(DCmdSource source, TRAPS) {
433 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
434 true, CHECK);
435 JavaValue result(T_VOID);
436 JavaCalls::call_static(&result, k,
437 vmSymbols::run_finalization_name(),
438 vmSymbols::void_method_signature(), CHECK);
439 }
440
441 void HeapInfoDCmd::execute(DCmdSource source, TRAPS) {
442 MutexLocker hl(Heap_lock);
443 Universe::heap()->print_on(output());
444 }
445
446 void FinalizerInfoDCmd::execute(DCmdSource source, TRAPS) {
447 ResourceMark rm;
448
449 Klass* k = SystemDictionary::resolve_or_fail(
450 vmSymbols::finalizer_histogram_klass(), true, CHECK);
451
452 JavaValue result(T_ARRAY);
453
454 // We are calling lang.ref.FinalizerHistogram.getFinalizerHistogram() method
455 // and expect it to return array of FinalizerHistogramEntry as Object[]
456
457 JavaCalls::call_static(&result, k,
458 vmSymbols::get_finalizer_histogram_name(),
459 vmSymbols::void_finalizer_histogram_entry_array_signature(), CHECK);
460
461 objArrayOop result_oop = (objArrayOop) result.get_jobject();
462 if (result_oop->length() == 0) {
463 output()->print_cr("No instances waiting for finalization found");
464 return;
465 }
466
467 oop foop = result_oop->obj_at(0);
468 InstanceKlass* ik = InstanceKlass::cast(foop->klass());
469
470 fieldDescriptor count_fd, name_fd;
471
472 Klass* count_res = ik->find_field(
473 vmSymbols::finalizer_histogram_entry_count_field(), vmSymbols::int_signature(), &count_fd);
474
475 Klass* name_res = ik->find_field(
476 vmSymbols::finalizer_histogram_entry_name_field(), vmSymbols::string_signature(), &name_fd);
477
478 assert(count_res != NULL && name_res != NULL, "Unexpected layout of FinalizerHistogramEntry");
479
480 output()->print_cr("Unreachable instances waiting for finalization");
481 output()->print_cr("#instances class name");
482 output()->print_cr("-----------------------");
483
484 for (int i = 0; i < result_oop->length(); ++i) {
485 oop element_oop = result_oop->obj_at(i);
486 oop str_oop = element_oop->obj_field(name_fd.offset());
487 char *name = java_lang_String::as_utf8_string(str_oop);
488 int count = element_oop->int_field(count_fd.offset());
489 output()->print_cr("%10d %s", count, name);
490 }
491 }
492
493 #if INCLUDE_SERVICES // Heap dumping/inspection supported
494 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
495 DCmdWithParser(output, heap),
496 _filename("filename","Name of the dump file", "STRING",true),
497 _all("-all", "Dump all objects, including unreachable objects",
498 "BOOLEAN", false, "false") {
499 _dcmdparser.add_dcmd_option(&_all);
500 _dcmdparser.add_dcmd_argument(&_filename);
501 }
502
503 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) {
504 // Request a full GC before heap dump if _all is false
505 // This helps reduces the amount of unreachable objects in the dump
506 // and makes it easier to browse.
507 HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
508 int res = dumper.dump(_filename.value());
509 if (res == 0) {
510 output()->print_cr("Heap dump file created");
511 } else {
512 // heap dump failed
513 ResourceMark rm;
514 char* error = dumper.error_as_C_string();
515 if (error == NULL) {
516 output()->print_cr("Dump failed - reason unknown");
517 } else {
518 output()->print_cr("%s", error);
519 }
520 }
521 }
522
523 int HeapDumpDCmd::num_arguments() {
524 ResourceMark rm;
525 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
526 if (dcmd != NULL) {
527 DCmdMark mark(dcmd);
528 return dcmd->_dcmdparser.num_arguments();
529 } else {
530 return 0;
531 }
532 }
533
534 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
535 DCmdWithParser(output, heap),
536 _all("-all", "Inspect all objects, including unreachable objects",
537 "BOOLEAN", false, "false") {
538 _dcmdparser.add_dcmd_option(&_all);
539 }
540
541 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) {
542 VM_GC_HeapInspection heapop(output(),
543 !_all.value() /* request full gc if false */);
544 VMThread::execute(&heapop);
545 }
546
547 int ClassHistogramDCmd::num_arguments() {
548 ResourceMark rm;
549 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
550 if (dcmd != NULL) {
551 DCmdMark mark(dcmd);
552 return dcmd->_dcmdparser.num_arguments();
553 } else {
554 return 0;
555 }
556 }
557
558 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total"
559 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) :
560 DCmdWithParser(output, heap),
561 _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets",
562 "BOOLEAN", false, "false"),
563 _all("-all", "Show all columns",
564 "BOOLEAN", false, "false"),
565 _help("-help", "Show meaning of all the columns",
566 "BOOLEAN", false, "false"),
567 _columns("columns", "Comma-separated list of all the columns to show. "
568 "If not specified, the following columns are shown: " DEFAULT_COLUMNS,
569 "STRING", false) {
570 _dcmdparser.add_dcmd_option(&_all);
571 _dcmdparser.add_dcmd_option(&_csv);
572 _dcmdparser.add_dcmd_option(&_help);
573 _dcmdparser.add_dcmd_argument(&_columns);
574 }
575
576 void ClassStatsDCmd::execute(DCmdSource source, TRAPS) {
577 VM_GC_HeapInspection heapop(output(),
578 true /* request_full_gc */);
579 heapop.set_csv_format(_csv.value());
580 heapop.set_print_help(_help.value());
581 heapop.set_print_class_stats(true);
582 if (_all.value()) {
583 if (_columns.has_value()) {
584 output()->print_cr("Cannot specify -all and individual columns at the same time");
585 return;
586 } else {
587 heapop.set_columns(NULL);
588 }
589 } else {
590 if (_columns.has_value()) {
591 heapop.set_columns(_columns.value());
592 } else {
593 heapop.set_columns(DEFAULT_COLUMNS);
594 }
595 }
596 VMThread::execute(&heapop);
597 }
598
599 int ClassStatsDCmd::num_arguments() {
600 ResourceMark rm;
601 ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false);
602 if (dcmd != NULL) {
603 DCmdMark mark(dcmd);
604 return dcmd->_dcmdparser.num_arguments();
605 } else {
606 return 0;
607 }
608 }
609 #endif // INCLUDE_SERVICES
610
611 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
612 DCmdWithParser(output, heap),
613 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false") {
614 _dcmdparser.add_dcmd_option(&_locks);
615 }
616
617 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) {
618 // thread stacks
619 VM_PrintThreads op1(output(), _locks.value());
620 VMThread::execute(&op1);
621
622 // JNI global handles
623 VM_PrintJNI op2(output());
624 VMThread::execute(&op2);
625
626 // Deadlock detection
627 VM_FindDeadlocks op3(output());
628 VMThread::execute(&op3);
629 }
630
631 int ThreadDumpDCmd::num_arguments() {
632 ResourceMark rm;
633 ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false);
634 if (dcmd != NULL) {
635 DCmdMark mark(dcmd);
636 return dcmd->_dcmdparser.num_arguments();
637 } else {
638 return 0;
639 }
640 }
641
642 // Enhanced JMX Agent support
643
644 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) :
645
646 DCmdWithParser(output, heap_allocated),
647
648 _config_file
649 ("config.file",
650 "set com.sun.management.config.file", "STRING", false),
651
652 _jmxremote_host
653 ("jmxremote.host",
654 "set com.sun.management.jmxremote.host", "STRING", false),
655
656 _jmxremote_port
657 ("jmxremote.port",
658 "set com.sun.management.jmxremote.port", "STRING", false),
659
660 _jmxremote_rmi_port
661 ("jmxremote.rmi.port",
662 "set com.sun.management.jmxremote.rmi.port", "STRING", false),
663
664 _jmxremote_ssl
665 ("jmxremote.ssl",
666 "set com.sun.management.jmxremote.ssl", "STRING", false),
667
668 _jmxremote_registry_ssl
669 ("jmxremote.registry.ssl",
670 "set com.sun.management.jmxremote.registry.ssl", "STRING", false),
671
672 _jmxremote_authenticate
673 ("jmxremote.authenticate",
674 "set com.sun.management.jmxremote.authenticate", "STRING", false),
675
676 _jmxremote_password_file
677 ("jmxremote.password.file",
678 "set com.sun.management.jmxremote.password.file", "STRING", false),
679
680 _jmxremote_access_file
681 ("jmxremote.access.file",
682 "set com.sun.management.jmxremote.access.file", "STRING", false),
683
684 _jmxremote_login_config
685 ("jmxremote.login.config",
686 "set com.sun.management.jmxremote.login.config", "STRING", false),
687
688 _jmxremote_ssl_enabled_cipher_suites
689 ("jmxremote.ssl.enabled.cipher.suites",
690 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false),
691
692 _jmxremote_ssl_enabled_protocols
693 ("jmxremote.ssl.enabled.protocols",
694 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false),
695
696 _jmxremote_ssl_need_client_auth
697 ("jmxremote.ssl.need.client.auth",
698 "set com.sun.management.jmxremote.need.client.auth", "STRING", false),
699
700 _jmxremote_ssl_config_file
701 ("jmxremote.ssl.config.file",
702 "set com.sun.management.jmxremote.ssl_config_file", "STRING", false),
703
704 // JDP Protocol support
705 _jmxremote_autodiscovery
706 ("jmxremote.autodiscovery",
707 "set com.sun.management.jmxremote.autodiscovery", "STRING", false),
708
709 _jdp_port
710 ("jdp.port",
711 "set com.sun.management.jdp.port", "INT", false),
712
713 _jdp_address
714 ("jdp.address",
715 "set com.sun.management.jdp.address", "STRING", false),
716
717 _jdp_source_addr
718 ("jdp.source_addr",
719 "set com.sun.management.jdp.source_addr", "STRING", false),
720
721 _jdp_ttl
722 ("jdp.ttl",
723 "set com.sun.management.jdp.ttl", "INT", false),
724
725 _jdp_pause
726 ("jdp.pause",
727 "set com.sun.management.jdp.pause", "INT", false),
728
729 _jdp_name
730 ("jdp.name",
731 "set com.sun.management.jdp.name", "STRING", false)
732
733 {
734 _dcmdparser.add_dcmd_option(&_config_file);
735 _dcmdparser.add_dcmd_option(&_jmxremote_host);
736 _dcmdparser.add_dcmd_option(&_jmxremote_port);
737 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port);
738 _dcmdparser.add_dcmd_option(&_jmxremote_ssl);
739 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl);
740 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate);
741 _dcmdparser.add_dcmd_option(&_jmxremote_password_file);
742 _dcmdparser.add_dcmd_option(&_jmxremote_access_file);
743 _dcmdparser.add_dcmd_option(&_jmxremote_login_config);
744 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites);
745 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols);
746 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth);
747 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file);
748 _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery);
749 _dcmdparser.add_dcmd_option(&_jdp_port);
750 _dcmdparser.add_dcmd_option(&_jdp_address);
751 _dcmdparser.add_dcmd_option(&_jdp_source_addr);
752 _dcmdparser.add_dcmd_option(&_jdp_ttl);
753 _dcmdparser.add_dcmd_option(&_jdp_pause);
754 _dcmdparser.add_dcmd_option(&_jdp_name);
755 }
756
757
758 int JMXStartRemoteDCmd::num_arguments() {
759 ResourceMark rm;
760 JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false);
761 if (dcmd != NULL) {
762 DCmdMark mark(dcmd);
763 return dcmd->_dcmdparser.num_arguments();
764 } else {
765 return 0;
766 }
767 }
768
769
770 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) {
771 ResourceMark rm(THREAD);
772 HandleMark hm(THREAD);
773
774 // Load and initialize the jdk.internal.agent.Agent class
775 // invoke startRemoteManagementAgent(string) method to start
776 // the remote management server.
777 // throw java.lang.NoSuchMethodError if the method doesn't exist
778
779 loadAgentModule(CHECK);
780 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
781 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
782
783 JavaValue result(T_VOID);
784
785 // Pass all command line arguments to java as key=value,...
786 // All checks are done on java side
787
788 int len = 0;
789 stringStream options;
790 char comma[2] = {0,0};
791
792 // Leave default values on Agent.class side and pass only
793 // agruments explicitly set by user. All arguments passed
794 // to jcmd override properties with the same name set by
795 // command line with -D or by managmenent.properties
796 // file.
797 #define PUT_OPTION(a) \
798 do { \
799 if ( (a).is_set() ){ \
800 if ( *((a).type()) == 'I' ) { \
801 options.print("%scom.sun.management.%s=" JLONG_FORMAT, comma, (a).name(), (jlong)((a).value())); \
802 } else { \
803 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (char*)((a).value())); \
804 } \
805 comma[0] = ','; \
806 }\
807 } while(0);
808
809
810 PUT_OPTION(_config_file);
811 PUT_OPTION(_jmxremote_host);
812 PUT_OPTION(_jmxremote_port);
813 PUT_OPTION(_jmxremote_rmi_port);
814 PUT_OPTION(_jmxremote_ssl);
815 PUT_OPTION(_jmxremote_registry_ssl);
816 PUT_OPTION(_jmxremote_authenticate);
817 PUT_OPTION(_jmxremote_password_file);
818 PUT_OPTION(_jmxremote_access_file);
819 PUT_OPTION(_jmxremote_login_config);
820 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites);
821 PUT_OPTION(_jmxremote_ssl_enabled_protocols);
822 PUT_OPTION(_jmxremote_ssl_need_client_auth);
823 PUT_OPTION(_jmxremote_ssl_config_file);
824 PUT_OPTION(_jmxremote_autodiscovery);
825 PUT_OPTION(_jdp_port);
826 PUT_OPTION(_jdp_address);
827 PUT_OPTION(_jdp_source_addr);
828 PUT_OPTION(_jdp_ttl);
829 PUT_OPTION(_jdp_pause);
830 PUT_OPTION(_jdp_name);
831
832 #undef PUT_OPTION
833
834 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK);
835 JavaCalls::call_static(&result, k, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK);
836 }
837
838 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) :
839 DCmd(output, heap_allocated) {
840 // do nothing
841 }
842
843 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) {
844 ResourceMark rm(THREAD);
845 HandleMark hm(THREAD);
846
847 // Load and initialize the jdk.internal.agent.Agent class
848 // invoke startLocalManagementAgent(void) method to start
849 // the local management server
850 // throw java.lang.NoSuchMethodError if method doesn't exist
851
852 loadAgentModule(CHECK);
853 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
854 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
855
856 JavaValue result(T_VOID);
857 JavaCalls::call_static(&result, k, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK);
858 }
859
860 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) {
861 ResourceMark rm(THREAD);
862 HandleMark hm(THREAD);
863
864 // Load and initialize the jdk.internal.agent.Agent class
865 // invoke stopRemoteManagementAgent method to stop the
866 // management server
867 // throw java.lang.NoSuchMethodError if method doesn't exist
868
869 loadAgentModule(CHECK);
870 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
871 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
872
873 JavaValue result(T_VOID);
874 JavaCalls::call_static(&result, k, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK);
875 }
876
877 JMXStatusDCmd::JMXStatusDCmd(outputStream *output, bool heap_allocated) :
878 DCmd(output, heap_allocated) {
879 // do nothing
880 }
881
882 void JMXStatusDCmd::execute(DCmdSource source, TRAPS) {
883 ResourceMark rm(THREAD);
884 HandleMark hm(THREAD);
885
886 // Load and initialize the jdk.internal.agent.Agent class
887 // invoke getManagementAgentStatus() method to generate the status info
888 // throw java.lang.NoSuchMethodError if method doesn't exist
889
890 loadAgentModule(CHECK);
891 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
892 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK);
893
894 JavaValue result(T_OBJECT);
895 JavaCalls::call_static(&result, k, vmSymbols::getAgentStatus_name(), vmSymbols::void_string_signature(), CHECK);
896
897 jvalue* jv = (jvalue*) result.get_value_addr();
898 oop str = (oop) jv->l;
899 if (str != NULL) {
900 char* out = java_lang_String::as_utf8_string(str);
901 if (out) {
902 output()->print_cr("%s", out);
903 return;
904 }
905 }
906 output()->print_cr("Error obtaining management agent status");
907 }
908
909 VMDynamicLibrariesDCmd::VMDynamicLibrariesDCmd(outputStream *output, bool heap_allocated) :
910 DCmd(output, heap_allocated) {
911 // do nothing
912 }
913
914 void VMDynamicLibrariesDCmd::execute(DCmdSource source, TRAPS) {
915 os::print_dll_info(output());
916 output()->cr();
917 }
918
919 void CompileQueueDCmd::execute(DCmdSource source, TRAPS) {
920 VM_PrintCompileQueue printCompileQueueOp(output());
921 VMThread::execute(&printCompileQueueOp);
922 }
923
924 void CodeListDCmd::execute(DCmdSource source, TRAPS) {
925 CodeCache::print_codelist(output());
926 }
927
928 void CodeCacheDCmd::execute(DCmdSource source, TRAPS) {
929 CodeCache::print_layout(output());
930 }
931
932 //---< BEGIN >--- CodeHeap State Analytics.
933 CodeHeapAnalyticsDCmd::CodeHeapAnalyticsDCmd(outputStream* output, bool heap) :
934 DCmdWithParser(output, heap),
935 _function("function", "Function to be performed (aggregate, UsedSpace, FreeSpace, MethodCount, MethodSpace, MethodAge, MethodNames, discard", "STRING", false, "all"),
936 _granularity("granularity", "Detail level - smaller value -> more detail", "STRING", false, "4096") {
937 _dcmdparser.add_dcmd_argument(&_function);
938 _dcmdparser.add_dcmd_argument(&_granularity);
939 }
940
941 void CodeHeapAnalyticsDCmd::execute(DCmdSource source, TRAPS) {
942 CompileBroker::print_heapinfo(output(), _function.value(), _granularity.value());
943 }
944
945 int CodeHeapAnalyticsDCmd::num_arguments() {
946 ResourceMark rm;
947 CodeHeapAnalyticsDCmd* dcmd = new CodeHeapAnalyticsDCmd(NULL, false);
948 if (dcmd != NULL) {
949 DCmdMark mark(dcmd);
950 return dcmd->_dcmdparser.num_arguments();
951 } else {
952 return 0;
953 }
954 }
955 //---< END >--- CodeHeap State Analytics.
956
957 void CompilerDirectivesPrintDCmd::execute(DCmdSource source, TRAPS) {
958 DirectivesStack::print(output());
959 }
960
961 CompilerDirectivesAddDCmd::CompilerDirectivesAddDCmd(outputStream* output, bool heap) :
962 DCmdWithParser(output, heap),
963 _filename("filename","Name of the directives file", "STRING",true) {
964 _dcmdparser.add_dcmd_argument(&_filename);
965 }
966
967 void CompilerDirectivesAddDCmd::execute(DCmdSource source, TRAPS) {
968 DirectivesParser::parse_from_file(_filename.value(), output());
969 }
970
971 int CompilerDirectivesAddDCmd::num_arguments() {
972 ResourceMark rm;
973 CompilerDirectivesAddDCmd* dcmd = new CompilerDirectivesAddDCmd(NULL, false);
974 if (dcmd != NULL) {
975 DCmdMark mark(dcmd);
976 return dcmd->_dcmdparser.num_arguments();
977 } else {
978 return 0;
979 }
980 }
981
982 void CompilerDirectivesRemoveDCmd::execute(DCmdSource source, TRAPS) {
983 DirectivesStack::pop(1);
984 }
985
986 void CompilerDirectivesClearDCmd::execute(DCmdSource source, TRAPS) {
987 DirectivesStack::clear();
988 }
989 #if INCLUDE_SERVICES
990 ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) :
991 DCmdWithParser(output, heap),
992 _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"),
993 _print_subclasses("-s", "If a classname is specified, print its subclasses. "
994 "Otherwise only its superclasses are printed.", "BOOLEAN", false, "false"),
995 _classname("classname", "Name of class whose hierarchy should be printed. "
996 "If not specified, all class hierarchies are printed.",
997 "STRING", false) {
998 _dcmdparser.add_dcmd_option(&_print_interfaces);
999 _dcmdparser.add_dcmd_option(&_print_subclasses);
1000 _dcmdparser.add_dcmd_argument(&_classname);
1001 }
1002
1003 void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) {
1004 VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(),
1005 _print_subclasses.value(), _classname.value());
1006 VMThread::execute(&printClassHierarchyOp);
1007 }
1008
1009 int ClassHierarchyDCmd::num_arguments() {
1010 ResourceMark rm;
1011 ClassHierarchyDCmd* dcmd = new ClassHierarchyDCmd(NULL, false);
1012 if (dcmd != NULL) {
1013 DCmdMark mark(dcmd);
1014 return dcmd->_dcmdparser.num_arguments();
1015 } else {
1016 return 0;
1017 }
1018 }
1019
1020 #endif
1021
1022 class VM_DumpTouchedMethods : public VM_Operation {
1023 private:
1024 outputStream* _out;
1025 public:
1026 VM_DumpTouchedMethods(outputStream* out) {
1027 _out = out;
1028 }
1029
1030 virtual VMOp_Type type() const { return VMOp_DumpTouchedMethods; }
1031
1032 virtual void doit() {
1033 Method::print_touched_methods(_out);
1034 }
1035 };
1036
1037 TouchedMethodsDCmd::TouchedMethodsDCmd(outputStream* output, bool heap) :
1038 DCmdWithParser(output, heap)
1039 {}
1040
1041 void TouchedMethodsDCmd::execute(DCmdSource source, TRAPS) {
1042 if (!LogTouchedMethods) {
1043 output()->print_cr("VM.print_touched_methods command requires -XX:+LogTouchedMethods");
1044 return;
1045 }
1046 VM_DumpTouchedMethods dumper(output());
1047 VMThread::execute(&dumper);
1048 }
1049
1050 int TouchedMethodsDCmd::num_arguments() {
1051 return 0;
1052 }