1 /* 2 * Copyright (c) 2011, 2019, 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 "compiler/compileBroker.hpp" 30 #include "compiler/directivesParser.hpp" 31 #include "gc/shared/gcVMOperations.hpp" 32 #include "memory/metaspace/metaspaceDCmd.hpp" 33 #include "memory/resourceArea.hpp" 34 #include "memory/universe.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/interfaceSupport.inline.hpp" 42 #include "runtime/javaCalls.hpp" 43 #include "runtime/os.hpp" 44 #include "services/diagnosticArgument.hpp" 45 #include "services/diagnosticCommand.hpp" 46 #include "services/diagnosticFramework.hpp" 47 #include "services/heapDumper.hpp" 48 #include "services/management.hpp" 49 #include "services/writeableFlags.hpp" 50 #include "utilities/debug.hpp" 51 #include "utilities/events.hpp" 52 #include "utilities/formatBuffer.hpp" 53 #include "utilities/macros.hpp" 54 55 56 static void loadAgentModule(TRAPS) { 57 ResourceMark rm(THREAD); 58 HandleMark hm(THREAD); 59 60 JavaValue result(T_OBJECT); 61 Handle h_module_name = java_lang_String::create_from_str("jdk.management.agent", CHECK); 62 JavaCalls::call_static(&result, 63 SystemDictionary::module_Modules_klass(), 64 vmSymbols::loadModule_name(), 65 vmSymbols::loadModule_signature(), 66 h_module_name, 67 THREAD); 68 } 69 70 void DCmdRegistrant::register_dcmds(){ 71 // Registration of the diagnostic commands 72 // First argument specifies which interfaces will export the command 73 // Second argument specifies if the command is enabled 74 // Third argument specifies if the command is hidden 75 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI 76 | DCmd_Source_MBean; 77 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(full_export, true, false)); 78 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(full_export, true, false)); 79 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(full_export, true, false)); 80 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(full_export, true, false)); 81 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(full_export, true, false)); 82 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SetVMFlagDCmd>(full_export, true, false)); 83 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMDynamicLibrariesDCmd>(full_export, true, false)); 84 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(full_export, true, false)); 85 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMInfoDCmd>(full_export, true, false)); 86 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(full_export, true, false)); 87 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(full_export, true, false)); 88 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapInfoDCmd>(full_export, true, false)); 89 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<FinalizerInfoDCmd>(full_export, true, false)); 90 #if INCLUDE_SERVICES 91 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false)); 92 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(full_export, true, false)); 93 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(full_export, true, false)); 94 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemDictionaryDCmd>(full_export, true, false)); 95 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHierarchyDCmd>(full_export, true, false)); 96 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SymboltableDCmd>(full_export, true, false)); 97 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<StringtableDCmd>(full_export, true, false)); 98 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<metaspace::MetaspaceDCmd>(full_export, true, false)); 99 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintClassLayoutDCmd>(full_export, true, false)); 100 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<EventLogDCmd>(full_export, true, false)); 101 #if INCLUDE_JVMTI // Both JVMTI and SERVICES have to be enabled to have this dcmd 102 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIAgentLoadDCmd>(full_export, true, false)); 103 #endif // INCLUDE_JVMTI 104 #endif // INCLUDE_SERVICES 105 #if INCLUDE_JVMTI 106 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIDataDumpDCmd>(full_export, true, false)); 107 #endif // INCLUDE_JVMTI 108 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false)); 109 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false)); 110 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderHierarchyDCmd>(full_export, true, false)); 111 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false)); 112 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false)); 113 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false)); 114 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<TouchedMethodsDCmd>(full_export, true, false)); 115 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeHeapAnalyticsDCmd>(full_export, true, false)); 116 117 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesPrintDCmd>(full_export, true, false)); 118 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesAddDCmd>(full_export, true, false)); 119 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesRemoveDCmd>(full_export, true, false)); 120 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesClearDCmd>(full_export, true, false)); 121 122 // Enhanced JMX Agent Support 123 // These commands won't be exported via the DiagnosticCommandMBean until an 124 // appropriate permission is created for them 125 uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI; 126 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false)); 127 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false)); 128 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false)); 129 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStatusDCmd>(jmx_agent_export_flags, true,false)); 130 // Debug on cmd (only makes sense with JVMTI since the agentlib needs it). 131 #if INCLUDE_JVMTI 132 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<DebugOnCmdStartDCmd>(full_export, true, false)); 133 #endif // INCLUDE_JVMTI 134 135 } 136 137 #ifndef HAVE_EXTRA_DCMD 138 void DCmdRegistrant::register_dcmds_ext(){ 139 // Do nothing here 140 } 141 #endif 142 143 144 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap), 145 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"), 146 _cmd("command name", "The name of the command for which we want help", 147 "STRING", false) { 148 _dcmdparser.add_dcmd_option(&_all); 149 _dcmdparser.add_dcmd_argument(&_cmd); 150 }; 151 152 153 static int compare_strings(const char** s1, const char** s2) { 154 return ::strcmp(*s1, *s2); 155 } 156 157 void HelpDCmd::execute(DCmdSource source, TRAPS) { 158 if (_all.value()) { 159 GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list(source); 160 cmd_list->sort(compare_strings); 161 for (int i = 0; i < cmd_list->length(); i++) { 162 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i), 163 strlen(cmd_list->at(i))); 164 output()->print_cr("%s%s", factory->name(), 165 factory->is_enabled() ? "" : " [disabled]"); 166 output()->print_cr("\t%s", factory->description()); 167 output()->cr(); 168 factory = factory->next(); 169 } 170 } else if (_cmd.has_value()) { 171 DCmd* cmd = NULL; 172 DCmdFactory* factory = DCmdFactory::factory(source, _cmd.value(), 173 strlen(_cmd.value())); 174 if (factory != NULL) { 175 output()->print_cr("%s%s", factory->name(), 176 factory->is_enabled() ? "" : " [disabled]"); 177 output()->print_cr("%s", factory->description()); 178 output()->print_cr("\nImpact: %s", factory->impact()); 179 JavaPermission p = factory->permission(); 180 if(p._class != NULL) { 181 if(p._action != NULL) { 182 output()->print_cr("\nPermission: %s(%s, %s)", 183 p._class, p._name == NULL ? "null" : p._name, p._action); 184 } else { 185 output()->print_cr("\nPermission: %s(%s)", 186 p._class, p._name == NULL ? "null" : p._name); 187 } 188 } 189 output()->cr(); 190 cmd = factory->create_resource_instance(output()); 191 if (cmd != NULL) { 192 DCmdMark mark(cmd); 193 cmd->print_help(factory->name()); 194 } 195 } else { 196 output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value()); 197 } 198 } else { 199 output()->print_cr("The following commands are available:"); 200 GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(source); 201 cmd_list->sort(compare_strings); 202 for (int i = 0; i < cmd_list->length(); i++) { 203 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i), 204 strlen(cmd_list->at(i))); 205 output()->print_cr("%s%s", factory->name(), 206 factory->is_enabled() ? "" : " [disabled]"); 207 factory = factory->_next; 208 } 209 output()->print_cr("\nFor more information about a specific command use 'help <command>'."); 210 } 211 } 212 213 int HelpDCmd::num_arguments() { 214 ResourceMark rm; 215 HelpDCmd* dcmd = new HelpDCmd(NULL, false); 216 if (dcmd != NULL) { 217 DCmdMark mark(dcmd); 218 return dcmd->_dcmdparser.num_arguments(); 219 } else { 220 return 0; 221 } 222 } 223 224 void VersionDCmd::execute(DCmdSource source, TRAPS) { 225 output()->print_cr("%s version %s", VM_Version::vm_name(), 226 VM_Version::vm_release()); 227 JDK_Version jdk_version = JDK_Version::current(); 228 if (jdk_version.patch_version() > 0) { 229 output()->print_cr("JDK %d.%d.%d.%d", jdk_version.major_version(), 230 jdk_version.minor_version(), jdk_version.security_version(), 231 jdk_version.patch_version()); 232 } else { 233 output()->print_cr("JDK %d.%d.%d", jdk_version.major_version(), 234 jdk_version.minor_version(), jdk_version.security_version()); 235 } 236 } 237 238 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) : 239 DCmdWithParser(output, heap), 240 _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") { 241 _dcmdparser.add_dcmd_option(&_all); 242 } 243 244 void PrintVMFlagsDCmd::execute(DCmdSource source, TRAPS) { 245 if (_all.value()) { 246 JVMFlag::printFlags(output(), true); 247 } else { 248 JVMFlag::printSetFlags(output()); 249 } 250 } 251 252 int PrintVMFlagsDCmd::num_arguments() { 253 ResourceMark rm; 254 PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false); 255 if (dcmd != NULL) { 256 DCmdMark mark(dcmd); 257 return dcmd->_dcmdparser.num_arguments(); 258 } else { 259 return 0; 260 } 261 } 262 263 SetVMFlagDCmd::SetVMFlagDCmd(outputStream* output, bool heap) : 264 DCmdWithParser(output, heap), 265 _flag("flag name", "The name of the flag we want to set", 266 "STRING", true), 267 _value("string value", "The value we want to set", "STRING", false) { 268 _dcmdparser.add_dcmd_argument(&_flag); 269 _dcmdparser.add_dcmd_argument(&_value); 270 } 271 272 void SetVMFlagDCmd::execute(DCmdSource source, TRAPS) { 273 const char* val = NULL; 274 if (_value.value() != NULL) { 275 val = _value.value(); 276 } 277 278 FormatBuffer<80> err_msg("%s", ""); 279 int ret = WriteableFlags::set_flag(_flag.value(), val, JVMFlag::MANAGEMENT, err_msg); 280 281 if (ret != JVMFlag::SUCCESS) { 282 output()->print_cr("%s", err_msg.buffer()); 283 } 284 } 285 286 int SetVMFlagDCmd::num_arguments() { 287 ResourceMark rm; 288 SetVMFlagDCmd* dcmd = new SetVMFlagDCmd(NULL, false); 289 if (dcmd != NULL) { 290 DCmdMark mark(dcmd); 291 return dcmd->_dcmdparser.num_arguments(); 292 } else { 293 return 0; 294 } 295 } 296 297 void JVMTIDataDumpDCmd::execute(DCmdSource source, TRAPS) { 298 if (JvmtiExport::should_post_data_dump()) { 299 JvmtiExport::post_data_dump(); 300 } 301 } 302 303 #if INCLUDE_SERVICES 304 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) : 305 DCmdWithParser(output, heap), 306 _libpath("library path", "Absolute path of the JVMTI agent to load.", 307 "STRING", true), 308 _option("agent option", "Option string to pass the agent.", "STRING", false) { 309 _dcmdparser.add_dcmd_argument(&_libpath); 310 _dcmdparser.add_dcmd_argument(&_option); 311 } 312 313 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) { 314 315 if (_libpath.value() == NULL) { 316 output()->print_cr("JVMTI.agent_load dcmd needs library path."); 317 return; 318 } 319 320 char *suffix = strrchr(_libpath.value(), '.'); 321 bool is_java_agent = (suffix != NULL) && (strncmp(".jar", suffix, 4) == 0); 322 323 if (is_java_agent) { 324 if (_option.value() == NULL) { 325 JvmtiExport::load_agent_library("instrument", "false", 326 _libpath.value(), output()); 327 } else { 328 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2; 329 if (opt_len > 4096) { 330 output()->print_cr("JVMTI agent attach failed: Options is too long."); 331 return; 332 } 333 334 char *opt = (char *)os::malloc(opt_len, mtInternal); 335 if (opt == NULL) { 336 output()->print_cr("JVMTI agent attach failed: " 337 "Could not allocate " SIZE_FORMAT " bytes for argument.", 338 opt_len); 339 return; 340 } 341 342 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value()); 343 JvmtiExport::load_agent_library("instrument", "false", opt, output()); 344 345 os::free(opt); 346 } 347 } else { 348 JvmtiExport::load_agent_library(_libpath.value(), "true", 349 _option.value(), output()); 350 } 351 } 352 353 int JVMTIAgentLoadDCmd::num_arguments() { 354 ResourceMark rm; 355 JVMTIAgentLoadDCmd* dcmd = new JVMTIAgentLoadDCmd(NULL, false); 356 if (dcmd != NULL) { 357 DCmdMark mark(dcmd); 358 return dcmd->_dcmdparser.num_arguments(); 359 } else { 360 return 0; 361 } 362 } 363 #endif // INCLUDE_SERVICES 364 365 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) { 366 // load VMSupport 367 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport(); 368 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK); 369 InstanceKlass* ik = InstanceKlass::cast(k); 370 if (ik->should_be_initialized()) { 371 ik->initialize(THREAD); 372 } 373 if (HAS_PENDING_EXCEPTION) { 374 java_lang_Throwable::print(PENDING_EXCEPTION, output()); 375 output()->cr(); 376 CLEAR_PENDING_EXCEPTION; 377 return; 378 } 379 380 // invoke the serializePropertiesToByteArray method 381 JavaValue result(T_OBJECT); 382 JavaCallArguments args; 383 384 Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature(); 385 JavaCalls::call_static(&result, 386 ik, 387 vmSymbols::serializePropertiesToByteArray_name(), 388 signature, 389 &args, 390 THREAD); 391 if (HAS_PENDING_EXCEPTION) { 392 java_lang_Throwable::print(PENDING_EXCEPTION, output()); 393 output()->cr(); 394 CLEAR_PENDING_EXCEPTION; 395 return; 396 } 397 398 // The result should be a [B 399 oop res = (oop)result.get_jobject(); 400 assert(res->is_typeArray(), "just checking"); 401 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking"); 402 403 // copy the bytes to the output stream 404 typeArrayOop ba = typeArrayOop(res); 405 jbyte* addr = typeArrayOop(res)->byte_at_addr(0); 406 output()->print_raw((const char*)addr, ba->length()); 407 } 408 409 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) : 410 DCmdWithParser(output, heap), 411 _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") { 412 _dcmdparser.add_dcmd_option(&_date); 413 } 414 415 void VMUptimeDCmd::execute(DCmdSource source, TRAPS) { 416 if (_date.value()) { 417 output()->date_stamp(true, "", ": "); 418 } 419 output()->time_stamp().update_to(tty->time_stamp().ticks()); 420 output()->stamp(); 421 output()->print_cr(" s"); 422 } 423 424 int VMUptimeDCmd::num_arguments() { 425 ResourceMark rm; 426 VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false); 427 if (dcmd != NULL) { 428 DCmdMark mark(dcmd); 429 return dcmd->_dcmdparser.num_arguments(); 430 } else { 431 return 0; 432 } 433 } 434 435 void VMInfoDCmd::execute(DCmdSource source, TRAPS) { 436 VMError::print_vm_info(_output); 437 } 438 439 void SystemGCDCmd::execute(DCmdSource source, TRAPS) { 440 Universe::heap()->collect(GCCause::_dcmd_gc_run); 441 } 442 443 void RunFinalizationDCmd::execute(DCmdSource source, TRAPS) { 444 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(), 445 true, CHECK); 446 JavaValue result(T_VOID); 447 JavaCalls::call_static(&result, k, 448 vmSymbols::run_finalization_name(), 449 vmSymbols::void_method_signature(), CHECK); 450 } 451 452 void HeapInfoDCmd::execute(DCmdSource source, TRAPS) { 453 MutexLocker hl(Heap_lock); 454 Universe::heap()->print_on(output()); 455 } 456 457 void FinalizerInfoDCmd::execute(DCmdSource source, TRAPS) { 458 ResourceMark rm; 459 460 Klass* k = SystemDictionary::resolve_or_fail( 461 vmSymbols::finalizer_histogram_klass(), true, CHECK); 462 463 JavaValue result(T_ARRAY); 464 465 // We are calling lang.ref.FinalizerHistogram.getFinalizerHistogram() method 466 // and expect it to return array of FinalizerHistogramEntry as Object[] 467 468 JavaCalls::call_static(&result, k, 469 vmSymbols::get_finalizer_histogram_name(), 470 vmSymbols::void_finalizer_histogram_entry_array_signature(), CHECK); 471 472 objArrayOop result_oop = (objArrayOop) result.get_jobject(); 473 if (result_oop->length() == 0) { 474 output()->print_cr("No instances waiting for finalization found"); 475 return; 476 } 477 478 oop foop = result_oop->obj_at(0); 479 InstanceKlass* ik = InstanceKlass::cast(foop->klass()); 480 481 fieldDescriptor count_fd, name_fd; 482 483 Klass* count_res = ik->find_field( 484 vmSymbols::finalizer_histogram_entry_count_field(), vmSymbols::int_signature(), &count_fd); 485 486 Klass* name_res = ik->find_field( 487 vmSymbols::finalizer_histogram_entry_name_field(), vmSymbols::string_signature(), &name_fd); 488 489 assert(count_res != NULL && name_res != NULL, "Unexpected layout of FinalizerHistogramEntry"); 490 491 output()->print_cr("Unreachable instances waiting for finalization"); 492 output()->print_cr("#instances class name"); 493 output()->print_cr("-----------------------"); 494 495 for (int i = 0; i < result_oop->length(); ++i) { 496 oop element_oop = result_oop->obj_at(i); 497 oop str_oop = element_oop->obj_field(name_fd.offset()); 498 char *name = java_lang_String::as_utf8_string(str_oop); 499 int count = element_oop->int_field(count_fd.offset()); 500 output()->print_cr("%10d %s", count, name); 501 } 502 } 503 504 #if INCLUDE_SERVICES // Heap dumping/inspection supported 505 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) : 506 DCmdWithParser(output, heap), 507 _filename("filename","Name of the dump file", "STRING",true), 508 _all("-all", "Dump all objects, including unreachable objects", 509 "BOOLEAN", false, "false") { 510 _dcmdparser.add_dcmd_option(&_all); 511 _dcmdparser.add_dcmd_argument(&_filename); 512 } 513 514 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) { 515 // Request a full GC before heap dump if _all is false 516 // This helps reduces the amount of unreachable objects in the dump 517 // and makes it easier to browse. 518 HeapDumper dumper(!_all.value() /* request GC if _all is false*/); 519 int res = dumper.dump(_filename.value()); 520 if (res == 0) { 521 output()->print_cr("Heap dump file created"); 522 } else { 523 // heap dump failed 524 ResourceMark rm; 525 char* error = dumper.error_as_C_string(); 526 if (error == NULL) { 527 output()->print_cr("Dump failed - reason unknown"); 528 } else { 529 output()->print_cr("%s", error); 530 } 531 } 532 } 533 534 int HeapDumpDCmd::num_arguments() { 535 ResourceMark rm; 536 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false); 537 if (dcmd != NULL) { 538 DCmdMark mark(dcmd); 539 return dcmd->_dcmdparser.num_arguments(); 540 } else { 541 return 0; 542 } 543 } 544 545 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) : 546 DCmdWithParser(output, heap), 547 _all("-all", "Inspect all objects, including unreachable objects", 548 "BOOLEAN", false, "false") { 549 _dcmdparser.add_dcmd_option(&_all); 550 } 551 552 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) { 553 VM_GC_HeapInspection heapop(output(), 554 !_all.value() /* request full gc if false */); 555 VMThread::execute(&heapop); 556 } 557 558 int ClassHistogramDCmd::num_arguments() { 559 ResourceMark rm; 560 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false); 561 if (dcmd != NULL) { 562 DCmdMark mark(dcmd); 563 return dcmd->_dcmdparser.num_arguments(); 564 } else { 565 return 0; 566 } 567 } 568 569 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total" 570 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) : 571 DCmdWithParser(output, heap), 572 _all("-all", "Show all columns", 573 "BOOLEAN", false, "false"), 574 _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets", 575 "BOOLEAN", false, "false"), 576 _help("-help", "Show meaning of all the columns", 577 "BOOLEAN", false, "false"), 578 _columns("columns", "Comma-separated list of all the columns to show. " 579 "If not specified, the following columns are shown: " DEFAULT_COLUMNS, 580 "STRING", false) { 581 _dcmdparser.add_dcmd_option(&_all); 582 _dcmdparser.add_dcmd_option(&_csv); 583 _dcmdparser.add_dcmd_option(&_help); 584 _dcmdparser.add_dcmd_argument(&_columns); 585 } 586 587 void ClassStatsDCmd::execute(DCmdSource source, TRAPS) { 588 VM_GC_HeapInspection heapop(output(), 589 true /* request_full_gc */); 590 heapop.set_csv_format(_csv.value()); 591 heapop.set_print_help(_help.value()); 592 heapop.set_print_class_stats(true); 593 if (_all.value()) { 594 if (_columns.has_value()) { 595 output()->print_cr("Cannot specify -all and individual columns at the same time"); 596 return; 597 } else { 598 heapop.set_columns(NULL); 599 } 600 } else { 601 if (_columns.has_value()) { 602 heapop.set_columns(_columns.value()); 603 } else { 604 heapop.set_columns(DEFAULT_COLUMNS); 605 } 606 } 607 VMThread::execute(&heapop); 608 } 609 610 int ClassStatsDCmd::num_arguments() { 611 ResourceMark rm; 612 ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false); 613 if (dcmd != NULL) { 614 DCmdMark mark(dcmd); 615 return dcmd->_dcmdparser.num_arguments(); 616 } else { 617 return 0; 618 } 619 } 620 #endif // INCLUDE_SERVICES 621 622 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) : 623 DCmdWithParser(output, heap), 624 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false"), 625 _extended("-e", "print extended thread information", "BOOLEAN", false, "false") { 626 _dcmdparser.add_dcmd_option(&_locks); 627 _dcmdparser.add_dcmd_option(&_extended); 628 } 629 630 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) { 631 // thread stacks 632 VM_PrintThreads op1(output(), _locks.value(), _extended.value()); 633 VMThread::execute(&op1); 634 635 // JNI global handles 636 VM_PrintJNI op2(output()); 637 VMThread::execute(&op2); 638 639 // Deadlock detection 640 VM_FindDeadlocks op3(output()); 641 VMThread::execute(&op3); 642 } 643 644 int ThreadDumpDCmd::num_arguments() { 645 ResourceMark rm; 646 ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false); 647 if (dcmd != NULL) { 648 DCmdMark mark(dcmd); 649 return dcmd->_dcmdparser.num_arguments(); 650 } else { 651 return 0; 652 } 653 } 654 655 // Enhanced JMX Agent support 656 657 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) : 658 659 DCmdWithParser(output, heap_allocated), 660 661 _config_file 662 ("config.file", 663 "set com.sun.management.config.file", "STRING", false), 664 665 _jmxremote_host 666 ("jmxremote.host", 667 "set com.sun.management.jmxremote.host", "STRING", false), 668 669 _jmxremote_port 670 ("jmxremote.port", 671 "set com.sun.management.jmxremote.port", "STRING", false), 672 673 _jmxremote_rmi_port 674 ("jmxremote.rmi.port", 675 "set com.sun.management.jmxremote.rmi.port", "STRING", false), 676 677 _jmxremote_ssl 678 ("jmxremote.ssl", 679 "set com.sun.management.jmxremote.ssl", "STRING", false), 680 681 _jmxremote_registry_ssl 682 ("jmxremote.registry.ssl", 683 "set com.sun.management.jmxremote.registry.ssl", "STRING", false), 684 685 _jmxremote_authenticate 686 ("jmxremote.authenticate", 687 "set com.sun.management.jmxremote.authenticate", "STRING", false), 688 689 _jmxremote_password_file 690 ("jmxremote.password.file", 691 "set com.sun.management.jmxremote.password.file", "STRING", false), 692 693 _jmxremote_access_file 694 ("jmxremote.access.file", 695 "set com.sun.management.jmxremote.access.file", "STRING", false), 696 697 _jmxremote_login_config 698 ("jmxremote.login.config", 699 "set com.sun.management.jmxremote.login.config", "STRING", false), 700 701 _jmxremote_ssl_enabled_cipher_suites 702 ("jmxremote.ssl.enabled.cipher.suites", 703 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false), 704 705 _jmxremote_ssl_enabled_protocols 706 ("jmxremote.ssl.enabled.protocols", 707 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false), 708 709 _jmxremote_ssl_need_client_auth 710 ("jmxremote.ssl.need.client.auth", 711 "set com.sun.management.jmxremote.need.client.auth", "STRING", false), 712 713 _jmxremote_ssl_config_file 714 ("jmxremote.ssl.config.file", 715 "set com.sun.management.jmxremote.ssl_config_file", "STRING", false), 716 717 // JDP Protocol support 718 _jmxremote_autodiscovery 719 ("jmxremote.autodiscovery", 720 "set com.sun.management.jmxremote.autodiscovery", "STRING", false), 721 722 _jdp_port 723 ("jdp.port", 724 "set com.sun.management.jdp.port", "INT", false), 725 726 _jdp_address 727 ("jdp.address", 728 "set com.sun.management.jdp.address", "STRING", false), 729 730 _jdp_source_addr 731 ("jdp.source_addr", 732 "set com.sun.management.jdp.source_addr", "STRING", false), 733 734 _jdp_ttl 735 ("jdp.ttl", 736 "set com.sun.management.jdp.ttl", "INT", false), 737 738 _jdp_pause 739 ("jdp.pause", 740 "set com.sun.management.jdp.pause", "INT", false), 741 742 _jdp_name 743 ("jdp.name", 744 "set com.sun.management.jdp.name", "STRING", false) 745 746 { 747 _dcmdparser.add_dcmd_option(&_config_file); 748 _dcmdparser.add_dcmd_option(&_jmxremote_host); 749 _dcmdparser.add_dcmd_option(&_jmxremote_port); 750 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port); 751 _dcmdparser.add_dcmd_option(&_jmxremote_ssl); 752 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl); 753 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate); 754 _dcmdparser.add_dcmd_option(&_jmxremote_password_file); 755 _dcmdparser.add_dcmd_option(&_jmxremote_access_file); 756 _dcmdparser.add_dcmd_option(&_jmxremote_login_config); 757 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites); 758 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols); 759 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth); 760 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file); 761 _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery); 762 _dcmdparser.add_dcmd_option(&_jdp_port); 763 _dcmdparser.add_dcmd_option(&_jdp_address); 764 _dcmdparser.add_dcmd_option(&_jdp_source_addr); 765 _dcmdparser.add_dcmd_option(&_jdp_ttl); 766 _dcmdparser.add_dcmd_option(&_jdp_pause); 767 _dcmdparser.add_dcmd_option(&_jdp_name); 768 } 769 770 771 int JMXStartRemoteDCmd::num_arguments() { 772 ResourceMark rm; 773 JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false); 774 if (dcmd != NULL) { 775 DCmdMark mark(dcmd); 776 return dcmd->_dcmdparser.num_arguments(); 777 } else { 778 return 0; 779 } 780 } 781 782 783 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) { 784 ResourceMark rm(THREAD); 785 HandleMark hm(THREAD); 786 787 // Load and initialize the jdk.internal.agent.Agent class 788 // invoke startRemoteManagementAgent(string) method to start 789 // the remote management server. 790 // throw java.lang.NoSuchMethodError if the method doesn't exist 791 792 loadAgentModule(CHECK); 793 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 794 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 795 796 JavaValue result(T_VOID); 797 798 // Pass all command line arguments to java as key=value,... 799 // All checks are done on java side 800 801 int len = 0; 802 stringStream options; 803 char comma[2] = {0,0}; 804 805 // Leave default values on Agent.class side and pass only 806 // agruments explicitly set by user. All arguments passed 807 // to jcmd override properties with the same name set by 808 // command line with -D or by managmenent.properties 809 // file. 810 #define PUT_OPTION(a) \ 811 do { \ 812 if ( (a).is_set() ){ \ 813 if ( *((a).type()) == 'I' ) { \ 814 options.print("%scom.sun.management.%s=" JLONG_FORMAT, comma, (a).name(), (jlong)((a).value())); \ 815 } else { \ 816 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (char*)((a).value())); \ 817 } \ 818 comma[0] = ','; \ 819 }\ 820 } while(0); 821 822 823 PUT_OPTION(_config_file); 824 PUT_OPTION(_jmxremote_host); 825 PUT_OPTION(_jmxremote_port); 826 PUT_OPTION(_jmxremote_rmi_port); 827 PUT_OPTION(_jmxremote_ssl); 828 PUT_OPTION(_jmxremote_registry_ssl); 829 PUT_OPTION(_jmxremote_authenticate); 830 PUT_OPTION(_jmxremote_password_file); 831 PUT_OPTION(_jmxremote_access_file); 832 PUT_OPTION(_jmxremote_login_config); 833 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites); 834 PUT_OPTION(_jmxremote_ssl_enabled_protocols); 835 PUT_OPTION(_jmxremote_ssl_need_client_auth); 836 PUT_OPTION(_jmxremote_ssl_config_file); 837 PUT_OPTION(_jmxremote_autodiscovery); 838 PUT_OPTION(_jdp_port); 839 PUT_OPTION(_jdp_address); 840 PUT_OPTION(_jdp_source_addr); 841 PUT_OPTION(_jdp_ttl); 842 PUT_OPTION(_jdp_pause); 843 PUT_OPTION(_jdp_name); 844 845 #undef PUT_OPTION 846 847 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK); 848 JavaCalls::call_static(&result, k, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK); 849 } 850 851 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) : 852 DCmd(output, heap_allocated) { 853 // do nothing 854 } 855 856 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) { 857 ResourceMark rm(THREAD); 858 HandleMark hm(THREAD); 859 860 // Load and initialize the jdk.internal.agent.Agent class 861 // invoke startLocalManagementAgent(void) method to start 862 // the local management server 863 // throw java.lang.NoSuchMethodError if method doesn't exist 864 865 loadAgentModule(CHECK); 866 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 867 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 868 869 JavaValue result(T_VOID); 870 JavaCalls::call_static(&result, k, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK); 871 } 872 873 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) { 874 ResourceMark rm(THREAD); 875 HandleMark hm(THREAD); 876 877 // Load and initialize the jdk.internal.agent.Agent class 878 // invoke stopRemoteManagementAgent method to stop the 879 // management server 880 // throw java.lang.NoSuchMethodError if method doesn't exist 881 882 loadAgentModule(CHECK); 883 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 884 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 885 886 JavaValue result(T_VOID); 887 JavaCalls::call_static(&result, k, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK); 888 } 889 890 JMXStatusDCmd::JMXStatusDCmd(outputStream *output, bool heap_allocated) : 891 DCmd(output, heap_allocated) { 892 // do nothing 893 } 894 895 void JMXStatusDCmd::execute(DCmdSource source, TRAPS) { 896 ResourceMark rm(THREAD); 897 HandleMark hm(THREAD); 898 899 // Load and initialize the jdk.internal.agent.Agent class 900 // invoke getManagementAgentStatus() method to generate the status info 901 // throw java.lang.NoSuchMethodError if method doesn't exist 902 903 loadAgentModule(CHECK); 904 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 905 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 906 907 JavaValue result(T_OBJECT); 908 JavaCalls::call_static(&result, k, vmSymbols::getAgentStatus_name(), vmSymbols::void_string_signature(), CHECK); 909 910 jvalue* jv = (jvalue*) result.get_value_addr(); 911 oop str = (oop) jv->l; 912 if (str != NULL) { 913 char* out = java_lang_String::as_utf8_string(str); 914 if (out) { 915 output()->print_cr("%s", out); 916 return; 917 } 918 } 919 output()->print_cr("Error obtaining management agent status"); 920 } 921 922 VMDynamicLibrariesDCmd::VMDynamicLibrariesDCmd(outputStream *output, bool heap_allocated) : 923 DCmd(output, heap_allocated) { 924 // do nothing 925 } 926 927 void VMDynamicLibrariesDCmd::execute(DCmdSource source, TRAPS) { 928 os::print_dll_info(output()); 929 output()->cr(); 930 } 931 932 void CompileQueueDCmd::execute(DCmdSource source, TRAPS) { 933 VM_PrintCompileQueue printCompileQueueOp(output()); 934 VMThread::execute(&printCompileQueueOp); 935 } 936 937 void CodeListDCmd::execute(DCmdSource source, TRAPS) { 938 CodeCache::print_codelist(output()); 939 } 940 941 void CodeCacheDCmd::execute(DCmdSource source, TRAPS) { 942 CodeCache::print_layout(output()); 943 } 944 945 //---< BEGIN >--- CodeHeap State Analytics. 946 CodeHeapAnalyticsDCmd::CodeHeapAnalyticsDCmd(outputStream* output, bool heap) : 947 DCmdWithParser(output, heap), 948 _function("function", "Function to be performed (aggregate, UsedSpace, FreeSpace, MethodCount, MethodSpace, MethodAge, MethodNames, discard", "STRING", false, "all"), 949 _granularity("granularity", "Detail level - smaller value -> more detail", "INT", false, "4096") { 950 _dcmdparser.add_dcmd_argument(&_function); 951 _dcmdparser.add_dcmd_argument(&_granularity); 952 } 953 954 void CodeHeapAnalyticsDCmd::execute(DCmdSource source, TRAPS) { 955 jlong granularity = _granularity.value(); 956 if (granularity < 1) { 957 Exceptions::fthrow(THREAD_AND_LOCATION, vmSymbols::java_lang_IllegalArgumentException(), 958 "Invalid granularity value " JLONG_FORMAT ". Should be positive.\n", granularity); 959 return; 960 } 961 962 CompileBroker::print_heapinfo(output(), _function.value(), granularity); 963 } 964 965 int CodeHeapAnalyticsDCmd::num_arguments() { 966 ResourceMark rm; 967 CodeHeapAnalyticsDCmd* dcmd = new CodeHeapAnalyticsDCmd(NULL, false); 968 if (dcmd != NULL) { 969 DCmdMark mark(dcmd); 970 return dcmd->_dcmdparser.num_arguments(); 971 } else { 972 return 0; 973 } 974 } 975 //---< END >--- CodeHeap State Analytics. 976 977 EventLogDCmd::EventLogDCmd(outputStream* output, bool heap) : 978 DCmdWithParser(output, heap), 979 _log("log", "Name of log to be printed. If omitted, all logs are printed.", "STRING", false, NULL), 980 _max("max", "Maximum number of events to be printed (newest first). If omitted, all events are printed.", "STRING", false, NULL) 981 { 982 _dcmdparser.add_dcmd_option(&_log); 983 _dcmdparser.add_dcmd_option(&_max); 984 } 985 986 void EventLogDCmd::execute(DCmdSource source, TRAPS) { 987 const char* max_value = _max.value(); 988 long max = -1; 989 if (max_value != NULL) { 990 char* endptr = NULL; 991 max = ::strtol(max_value, &endptr, 10); 992 if (max == 0 && max_value == endptr) { 993 output()->print_cr("Invalid max option: \"%s\".", max_value); 994 return; 995 } 996 } 997 const char* log_name = _log.value(); 998 if (log_name != NULL) { 999 Events::print_one(output(), log_name, max); 1000 } else { 1001 Events::print_all(output(), max); 1002 } 1003 } 1004 1005 int EventLogDCmd::num_arguments() { 1006 ResourceMark rm; 1007 EventLogDCmd* dcmd = new EventLogDCmd(NULL, false); 1008 if (dcmd != NULL) { 1009 DCmdMark mark(dcmd); 1010 return dcmd->_dcmdparser.num_arguments(); 1011 } else { 1012 return 0; 1013 } 1014 } 1015 1016 void CompilerDirectivesPrintDCmd::execute(DCmdSource source, TRAPS) { 1017 DirectivesStack::print(output()); 1018 } 1019 1020 CompilerDirectivesAddDCmd::CompilerDirectivesAddDCmd(outputStream* output, bool heap) : 1021 DCmdWithParser(output, heap), 1022 _filename("filename","Name of the directives file", "STRING",true) { 1023 _dcmdparser.add_dcmd_argument(&_filename); 1024 } 1025 1026 void CompilerDirectivesAddDCmd::execute(DCmdSource source, TRAPS) { 1027 DirectivesParser::parse_from_file(_filename.value(), output()); 1028 } 1029 1030 int CompilerDirectivesAddDCmd::num_arguments() { 1031 ResourceMark rm; 1032 CompilerDirectivesAddDCmd* dcmd = new CompilerDirectivesAddDCmd(NULL, false); 1033 if (dcmd != NULL) { 1034 DCmdMark mark(dcmd); 1035 return dcmd->_dcmdparser.num_arguments(); 1036 } else { 1037 return 0; 1038 } 1039 } 1040 1041 void CompilerDirectivesRemoveDCmd::execute(DCmdSource source, TRAPS) { 1042 DirectivesStack::pop(1); 1043 } 1044 1045 void CompilerDirectivesClearDCmd::execute(DCmdSource source, TRAPS) { 1046 DirectivesStack::clear(); 1047 } 1048 #if INCLUDE_SERVICES 1049 ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) : 1050 DCmdWithParser(output, heap), 1051 _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"), 1052 _print_subclasses("-s", "If a classname is specified, print its subclasses. " 1053 "Otherwise only its superclasses are printed.", "BOOLEAN", false, "false"), 1054 _classname("classname", "Name of class whose hierarchy should be printed. " 1055 "If not specified, all class hierarchies are printed.", 1056 "STRING", false) { 1057 _dcmdparser.add_dcmd_option(&_print_interfaces); 1058 _dcmdparser.add_dcmd_option(&_print_subclasses); 1059 _dcmdparser.add_dcmd_argument(&_classname); 1060 } 1061 1062 void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) { 1063 VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(), 1064 _print_subclasses.value(), _classname.value()); 1065 VMThread::execute(&printClassHierarchyOp); 1066 } 1067 1068 int ClassHierarchyDCmd::num_arguments() { 1069 ResourceMark rm; 1070 ClassHierarchyDCmd* dcmd = new ClassHierarchyDCmd(NULL, false); 1071 if (dcmd != NULL) { 1072 DCmdMark mark(dcmd); 1073 return dcmd->_dcmdparser.num_arguments(); 1074 } else { 1075 return 0; 1076 } 1077 } 1078 1079 #endif 1080 1081 PrintClassLayoutDCmd::PrintClassLayoutDCmd(outputStream* output, bool heap) : 1082 DCmdWithParser(output, heap), 1083 _classname("classname", "Name of class whose layout should be printed. ", 1084 "STRING", true) { 1085 _dcmdparser.add_dcmd_argument(&_classname); 1086 } 1087 1088 void PrintClassLayoutDCmd::execute(DCmdSource source, TRAPS) { 1089 VM_PrintClassLayout printClassLayoutOp(output(), _classname.value()); 1090 VMThread::execute(&printClassLayoutOp); 1091 } 1092 1093 int PrintClassLayoutDCmd::num_arguments() { 1094 ResourceMark rm; 1095 PrintClassLayoutDCmd* dcmd = new PrintClassLayoutDCmd(NULL, false); 1096 if (dcmd != NULL) { 1097 DCmdMark mark(dcmd); 1098 return dcmd->_dcmdparser.num_arguments(); 1099 } else { 1100 return 0; 1101 } 1102 } 1103 1104 class VM_DumpTouchedMethods : public VM_Operation { 1105 private: 1106 outputStream* _out; 1107 public: 1108 VM_DumpTouchedMethods(outputStream* out) { 1109 _out = out; 1110 } 1111 1112 virtual VMOp_Type type() const { return VMOp_DumpTouchedMethods; } 1113 1114 virtual void doit() { 1115 Method::print_touched_methods(_out); 1116 } 1117 }; 1118 1119 TouchedMethodsDCmd::TouchedMethodsDCmd(outputStream* output, bool heap) : 1120 DCmdWithParser(output, heap) 1121 {} 1122 1123 void TouchedMethodsDCmd::execute(DCmdSource source, TRAPS) { 1124 if (!LogTouchedMethods) { 1125 output()->print_cr("VM.print_touched_methods command requires -XX:+LogTouchedMethods"); 1126 return; 1127 } 1128 VM_DumpTouchedMethods dumper(output()); 1129 VMThread::execute(&dumper); 1130 } 1131 1132 int TouchedMethodsDCmd::num_arguments() { 1133 return 0; 1134 } 1135 1136 #if INCLUDE_JVMTI 1137 extern "C" typedef char const* (JNICALL *debugInit_startDebuggingViaCommandPtr)(JNIEnv* env, jthread thread, char const** transport_name, 1138 char const** address, jboolean* first_start); 1139 static debugInit_startDebuggingViaCommandPtr dvc_start_ptr = NULL; 1140 1141 DebugOnCmdStartDCmd::DebugOnCmdStartDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap) { 1142 } 1143 1144 void DebugOnCmdStartDCmd::execute(DCmdSource source, TRAPS) { 1145 char const* transport = NULL; 1146 char const* addr = NULL; 1147 jboolean is_first_start = JNI_FALSE; 1148 JavaThread* thread = (JavaThread*) THREAD; 1149 jthread jt = JNIHandles::make_local(thread->threadObj()); 1150 ThreadToNativeFromVM ttn(thread); 1151 const char *error = "Could not find jdwp agent."; 1152 1153 if (!dvc_start_ptr) { 1154 for (AgentLibrary* agent = Arguments::agents(); agent != NULL; agent = agent->next()) { 1155 if ((strcmp("jdwp", agent->name()) == 0) && (dvc_start_ptr == NULL)) { 1156 char const* func = "debugInit_startDebuggingViaCommand"; 1157 dvc_start_ptr = (debugInit_startDebuggingViaCommandPtr) os::find_agent_function(agent, false, &func, 1); 1158 } 1159 } 1160 } 1161 1162 if (dvc_start_ptr) { 1163 error = dvc_start_ptr(thread->jni_environment(), jt, &transport, &addr, &is_first_start); 1164 } 1165 1166 if (error != NULL) { 1167 output()->print_cr("Debugging has not been started: %s", error); 1168 } else { 1169 output()->print_cr(is_first_start ? "Debugging has been started." : "Debugging is already active."); 1170 output()->print_cr("Transport : %s", transport ? transport : "#unknown"); 1171 output()->print_cr("Address : %s", addr ? addr : "#unknown"); 1172 } 1173 } 1174 #endif // INCLUDE_JVMTI