1 /* 2 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "jvm.h" 27 #include "classfile/classLoaderHierarchyDCmd.hpp" 28 #include "classfile/classLoaderStats.hpp" 29 #include "classfile/compactHashtable.hpp" 30 #include "compiler/compileBroker.hpp" 31 #include "compiler/directivesParser.hpp" 32 #include "gc/shared/vmGCOperations.hpp" 33 #include "memory/metaspace/metaspaceDCmd.hpp" 34 #include "memory/resourceArea.hpp" 35 #include "oops/objArrayOop.inline.hpp" 36 #include "oops/oop.inline.hpp" 37 #include "oops/typeArrayOop.inline.hpp" 38 #include "runtime/flags/jvmFlag.hpp" 39 #include "runtime/handles.inline.hpp" 40 #include "runtime/javaCalls.hpp" 41 #include "runtime/os.hpp" 42 #include "services/diagnosticArgument.hpp" 43 #include "services/diagnosticCommand.hpp" 44 #include "services/diagnosticFramework.hpp" 45 #include "services/heapDumper.hpp" 46 #include "services/management.hpp" 47 #include "services/writeableFlags.hpp" 48 #include "utilities/debug.hpp" 49 #include "utilities/formatBuffer.hpp" 50 #include "utilities/macros.hpp" 51 52 53 static void loadAgentModule(TRAPS) { 54 ResourceMark rm(THREAD); 55 HandleMark hm(THREAD); 56 57 JavaValue result(T_OBJECT); 58 Handle h_module_name = java_lang_String::create_from_str("jdk.management.agent", CHECK); 59 JavaCalls::call_static(&result, 60 SystemDictionary::module_Modules_klass(), 61 vmSymbols::loadModule_name(), 62 vmSymbols::loadModule_signature(), 63 h_module_name, 64 THREAD); 65 } 66 67 void DCmdRegistrant::register_dcmds(){ 68 // Registration of the diagnostic commands 69 // First argument specifies which interfaces will export the command 70 // Second argument specifies if the command is enabled 71 // Third argument specifies if the command is hidden 72 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI 73 | DCmd_Source_MBean; 74 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(full_export, true, false)); 75 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(full_export, true, false)); 76 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(full_export, true, false)); 77 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(full_export, true, false)); 78 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(full_export, true, false)); 79 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SetVMFlagDCmd>(full_export, true, false)); 80 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMDynamicLibrariesDCmd>(full_export, true, false)); 81 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(full_export, true, false)); 82 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMInfoDCmd>(full_export, true, false)); 83 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(full_export, true, false)); 84 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(full_export, true, false)); 85 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapInfoDCmd>(full_export, true, false)); 86 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<FinalizerInfoDCmd>(full_export, true, false)); 87 #if INCLUDE_SERVICES 88 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false)); 89 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(full_export, true, false)); 90 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(full_export, true, false)); 91 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemDictionaryDCmd>(full_export, true, false)); 92 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHierarchyDCmd>(full_export, true, false)); 93 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SymboltableDCmd>(full_export, true, false)); 94 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<StringtableDCmd>(full_export, true, false)); 95 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<metaspace::MetaspaceDCmd>(full_export, true, false)); 96 #if INCLUDE_JVMTI // Both JVMTI and SERVICES have to be enabled to have this dcmd 97 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIAgentLoadDCmd>(full_export, true, false)); 98 #endif // INCLUDE_JVMTI 99 #endif // INCLUDE_SERVICES 100 #if INCLUDE_JVMTI 101 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIDataDumpDCmd>(full_export, true, false)); 102 #endif // INCLUDE_JVMTI 103 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false)); 104 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false)); 105 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderHierarchyDCmd>(full_export, true, false)); 106 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false)); 107 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false)); 108 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false)); 109 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<TouchedMethodsDCmd>(full_export, true, false)); 110 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeHeapAnalyticsDCmd>(full_export, true, false)); 111 112 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesPrintDCmd>(full_export, true, false)); 113 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesAddDCmd>(full_export, true, false)); 114 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesRemoveDCmd>(full_export, true, false)); 115 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesClearDCmd>(full_export, true, false)); 116 117 // Enhanced JMX Agent Support 118 // These commands won't be exported via the DiagnosticCommandMBean until an 119 // appropriate permission is created for them 120 uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI; 121 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false)); 122 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false)); 123 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false)); 124 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStatusDCmd>(jmx_agent_export_flags, true,false)); 125 126 } 127 128 #ifndef HAVE_EXTRA_DCMD 129 void DCmdRegistrant::register_dcmds_ext(){ 130 // Do nothing here 131 } 132 #endif 133 134 135 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap), 136 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"), 137 _cmd("command name", "The name of the command for which we want help", 138 "STRING", false) { 139 _dcmdparser.add_dcmd_option(&_all); 140 _dcmdparser.add_dcmd_argument(&_cmd); 141 }; 142 143 144 static int compare_strings(const char** s1, const char** s2) { 145 return ::strcmp(*s1, *s2); 146 } 147 148 void HelpDCmd::execute(DCmdSource source, TRAPS) { 149 if (_all.value()) { 150 GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list(source); 151 cmd_list->sort(compare_strings); 152 for (int i = 0; i < cmd_list->length(); i++) { 153 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i), 154 strlen(cmd_list->at(i))); 155 output()->print_cr("%s%s", factory->name(), 156 factory->is_enabled() ? "" : " [disabled]"); 157 output()->print_cr("\t%s", factory->description()); 158 output()->cr(); 159 factory = factory->next(); 160 } 161 } else if (_cmd.has_value()) { 162 DCmd* cmd = NULL; 163 DCmdFactory* factory = DCmdFactory::factory(source, _cmd.value(), 164 strlen(_cmd.value())); 165 if (factory != NULL) { 166 output()->print_cr("%s%s", factory->name(), 167 factory->is_enabled() ? "" : " [disabled]"); 168 output()->print_cr("%s", factory->description()); 169 output()->print_cr("\nImpact: %s", factory->impact()); 170 JavaPermission p = factory->permission(); 171 if(p._class != NULL) { 172 if(p._action != NULL) { 173 output()->print_cr("\nPermission: %s(%s, %s)", 174 p._class, p._name == NULL ? "null" : p._name, p._action); 175 } else { 176 output()->print_cr("\nPermission: %s(%s)", 177 p._class, p._name == NULL ? "null" : p._name); 178 } 179 } 180 output()->cr(); 181 cmd = factory->create_resource_instance(output()); 182 if (cmd != NULL) { 183 DCmdMark mark(cmd); 184 cmd->print_help(factory->name()); 185 } 186 } else { 187 output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value()); 188 } 189 } else { 190 output()->print_cr("The following commands are available:"); 191 GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(source); 192 cmd_list->sort(compare_strings); 193 for (int i = 0; i < cmd_list->length(); i++) { 194 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i), 195 strlen(cmd_list->at(i))); 196 output()->print_cr("%s%s", factory->name(), 197 factory->is_enabled() ? "" : " [disabled]"); 198 factory = factory->_next; 199 } 200 output()->print_cr("\nFor more information about a specific command use 'help <command>'."); 201 } 202 } 203 204 int HelpDCmd::num_arguments() { 205 ResourceMark rm; 206 HelpDCmd* dcmd = new HelpDCmd(NULL, false); 207 if (dcmd != NULL) { 208 DCmdMark mark(dcmd); 209 return dcmd->_dcmdparser.num_arguments(); 210 } else { 211 return 0; 212 } 213 } 214 215 void VersionDCmd::execute(DCmdSource source, TRAPS) { 216 output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(), 217 Abstract_VM_Version::vm_release()); 218 JDK_Version jdk_version = JDK_Version::current(); 219 if (jdk_version.patch_version() > 0) { 220 output()->print_cr("JDK %d.%d.%d.%d", jdk_version.major_version(), 221 jdk_version.minor_version(), jdk_version.security_version(), 222 jdk_version.patch_version()); 223 } else { 224 output()->print_cr("JDK %d.%d.%d", jdk_version.major_version(), 225 jdk_version.minor_version(), jdk_version.security_version()); 226 } 227 } 228 229 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) : 230 DCmdWithParser(output, heap), 231 _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") { 232 _dcmdparser.add_dcmd_option(&_all); 233 } 234 235 void PrintVMFlagsDCmd::execute(DCmdSource source, TRAPS) { 236 if (_all.value()) { 237 JVMFlag::printFlags(output(), true); 238 } else { 239 JVMFlag::printSetFlags(output()); 240 } 241 } 242 243 int PrintVMFlagsDCmd::num_arguments() { 244 ResourceMark rm; 245 PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false); 246 if (dcmd != NULL) { 247 DCmdMark mark(dcmd); 248 return dcmd->_dcmdparser.num_arguments(); 249 } else { 250 return 0; 251 } 252 } 253 254 SetVMFlagDCmd::SetVMFlagDCmd(outputStream* output, bool heap) : 255 DCmdWithParser(output, heap), 256 _flag("flag name", "The name of the flag we want to set", 257 "STRING", true), 258 _value("string value", "The value we want to set", "STRING", false) { 259 _dcmdparser.add_dcmd_argument(&_flag); 260 _dcmdparser.add_dcmd_argument(&_value); 261 } 262 263 void SetVMFlagDCmd::execute(DCmdSource source, TRAPS) { 264 const char* val = NULL; 265 if (_value.value() != NULL) { 266 val = _value.value(); 267 } 268 269 FormatBuffer<80> err_msg("%s", ""); 270 int ret = WriteableFlags::set_flag(_flag.value(), val, JVMFlag::MANAGEMENT, err_msg); 271 272 if (ret != JVMFlag::SUCCESS) { 273 output()->print_cr("%s", err_msg.buffer()); 274 } 275 } 276 277 int SetVMFlagDCmd::num_arguments() { 278 ResourceMark rm; 279 SetVMFlagDCmd* dcmd = new SetVMFlagDCmd(NULL, false); 280 if (dcmd != NULL) { 281 DCmdMark mark(dcmd); 282 return dcmd->_dcmdparser.num_arguments(); 283 } else { 284 return 0; 285 } 286 } 287 288 void JVMTIDataDumpDCmd::execute(DCmdSource source, TRAPS) { 289 if (JvmtiExport::should_post_data_dump()) { 290 JvmtiExport::post_data_dump(); 291 } 292 } 293 294 #if INCLUDE_SERVICES 295 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) : 296 DCmdWithParser(output, heap), 297 _libpath("library path", "Absolute path of the JVMTI agent to load.", 298 "STRING", true), 299 _option("agent option", "Option string to pass the agent.", "STRING", false) { 300 _dcmdparser.add_dcmd_argument(&_libpath); 301 _dcmdparser.add_dcmd_argument(&_option); 302 } 303 304 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) { 305 306 if (_libpath.value() == NULL) { 307 output()->print_cr("JVMTI.agent_load dcmd needs library path."); 308 return; 309 } 310 311 char *suffix = strrchr(_libpath.value(), '.'); 312 bool is_java_agent = (suffix != NULL) && (strncmp(".jar", suffix, 4) == 0); 313 314 if (is_java_agent) { 315 if (_option.value() == NULL) { 316 JvmtiExport::load_agent_library("instrument", "false", 317 _libpath.value(), output()); 318 } else { 319 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2; 320 if (opt_len > 4096) { 321 output()->print_cr("JVMTI agent attach failed: Options is too long."); 322 return; 323 } 324 325 char *opt = (char *)os::malloc(opt_len, mtInternal); 326 if (opt == NULL) { 327 output()->print_cr("JVMTI agent attach failed: " 328 "Could not allocate " SIZE_FORMAT " bytes for argument.", 329 opt_len); 330 return; 331 } 332 333 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value()); 334 JvmtiExport::load_agent_library("instrument", "false", opt, output()); 335 336 os::free(opt); 337 } 338 } else { 339 JvmtiExport::load_agent_library(_libpath.value(), "true", 340 _option.value(), output()); 341 } 342 } 343 344 int JVMTIAgentLoadDCmd::num_arguments() { 345 ResourceMark rm; 346 JVMTIAgentLoadDCmd* dcmd = new JVMTIAgentLoadDCmd(NULL, false); 347 if (dcmd != NULL) { 348 DCmdMark mark(dcmd); 349 return dcmd->_dcmdparser.num_arguments(); 350 } else { 351 return 0; 352 } 353 } 354 #endif // INCLUDE_SERVICES 355 356 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) { 357 // load VMSupport 358 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport(); 359 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK); 360 InstanceKlass* ik = InstanceKlass::cast(k); 361 if (ik->should_be_initialized()) { 362 ik->initialize(THREAD); 363 } 364 if (HAS_PENDING_EXCEPTION) { 365 java_lang_Throwable::print(PENDING_EXCEPTION, output()); 366 output()->cr(); 367 CLEAR_PENDING_EXCEPTION; 368 return; 369 } 370 371 // invoke the serializePropertiesToByteArray method 372 JavaValue result(T_OBJECT); 373 JavaCallArguments args; 374 375 Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature(); 376 JavaCalls::call_static(&result, 377 ik, 378 vmSymbols::serializePropertiesToByteArray_name(), 379 signature, 380 &args, 381 THREAD); 382 if (HAS_PENDING_EXCEPTION) { 383 java_lang_Throwable::print(PENDING_EXCEPTION, output()); 384 output()->cr(); 385 CLEAR_PENDING_EXCEPTION; 386 return; 387 } 388 389 // The result should be a [B 390 oop res = (oop)result.get_jobject(); 391 assert(res->is_typeArray(), "just checking"); 392 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking"); 393 394 // copy the bytes to the output stream 395 typeArrayOop ba = typeArrayOop(res); 396 jbyte* addr = typeArrayOop(res)->byte_at_addr(0); 397 output()->print_raw((const char*)addr, ba->length()); 398 } 399 400 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) : 401 DCmdWithParser(output, heap), 402 _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") { 403 _dcmdparser.add_dcmd_option(&_date); 404 } 405 406 void VMUptimeDCmd::execute(DCmdSource source, TRAPS) { 407 if (_date.value()) { 408 output()->date_stamp(true, "", ": "); 409 } 410 output()->time_stamp().update_to(tty->time_stamp().ticks()); 411 output()->stamp(); 412 output()->print_cr(" s"); 413 } 414 415 int VMUptimeDCmd::num_arguments() { 416 ResourceMark rm; 417 VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false); 418 if (dcmd != NULL) { 419 DCmdMark mark(dcmd); 420 return dcmd->_dcmdparser.num_arguments(); 421 } else { 422 return 0; 423 } 424 } 425 426 void VMInfoDCmd::execute(DCmdSource source, TRAPS) { 427 VMError::print_vm_info(_output); 428 } 429 430 void SystemGCDCmd::execute(DCmdSource source, TRAPS) { 431 Universe::heap()->collect(GCCause::_dcmd_gc_run); 432 } 433 434 void RunFinalizationDCmd::execute(DCmdSource source, TRAPS) { 435 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(), 436 true, CHECK); 437 JavaValue result(T_VOID); 438 JavaCalls::call_static(&result, k, 439 vmSymbols::run_finalization_name(), 440 vmSymbols::void_method_signature(), CHECK); 441 } 442 443 void HeapInfoDCmd::execute(DCmdSource source, TRAPS) { 444 MutexLocker hl(Heap_lock); 445 Universe::heap()->print_on(output()); 446 } 447 448 void FinalizerInfoDCmd::execute(DCmdSource source, TRAPS) { 449 ResourceMark rm; 450 451 Klass* k = SystemDictionary::resolve_or_fail( 452 vmSymbols::finalizer_histogram_klass(), true, CHECK); 453 454 JavaValue result(T_ARRAY); 455 456 // We are calling lang.ref.FinalizerHistogram.getFinalizerHistogram() method 457 // and expect it to return array of FinalizerHistogramEntry as Object[] 458 459 JavaCalls::call_static(&result, k, 460 vmSymbols::get_finalizer_histogram_name(), 461 vmSymbols::void_finalizer_histogram_entry_array_signature(), CHECK); 462 463 objArrayOop result_oop = (objArrayOop) result.get_jobject(); 464 if (result_oop->length() == 0) { 465 output()->print_cr("No instances waiting for finalization found"); 466 return; 467 } 468 469 oop foop = result_oop->obj_at(0); 470 InstanceKlass* ik = InstanceKlass::cast(foop->klass()); 471 472 fieldDescriptor count_fd, name_fd; 473 474 Klass* count_res = ik->find_field( 475 vmSymbols::finalizer_histogram_entry_count_field(), vmSymbols::int_signature(), &count_fd); 476 477 Klass* name_res = ik->find_field( 478 vmSymbols::finalizer_histogram_entry_name_field(), vmSymbols::string_signature(), &name_fd); 479 480 assert(count_res != NULL && name_res != NULL, "Unexpected layout of FinalizerHistogramEntry"); 481 482 output()->print_cr("Unreachable instances waiting for finalization"); 483 output()->print_cr("#instances class name"); 484 output()->print_cr("-----------------------"); 485 486 for (int i = 0; i < result_oop->length(); ++i) { 487 oop element_oop = result_oop->obj_at(i); 488 oop str_oop = element_oop->obj_field(name_fd.offset()); 489 char *name = java_lang_String::as_utf8_string(str_oop); 490 int count = element_oop->int_field(count_fd.offset()); 491 output()->print_cr("%10d %s", count, name); 492 } 493 } 494 495 #if INCLUDE_SERVICES // Heap dumping/inspection supported 496 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) : 497 DCmdWithParser(output, heap), 498 _filename("filename","Name of the dump file", "STRING",true), 499 _all("-all", "Dump all objects, including unreachable objects", 500 "BOOLEAN", false, "false") { 501 _dcmdparser.add_dcmd_option(&_all); 502 _dcmdparser.add_dcmd_argument(&_filename); 503 } 504 505 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) { 506 // Request a full GC before heap dump if _all is false 507 // This helps reduces the amount of unreachable objects in the dump 508 // and makes it easier to browse. 509 HeapDumper dumper(!_all.value() /* request GC if _all is false*/); 510 int res = dumper.dump(_filename.value()); 511 if (res == 0) { 512 output()->print_cr("Heap dump file created"); 513 } else { 514 // heap dump failed 515 ResourceMark rm; 516 char* error = dumper.error_as_C_string(); 517 if (error == NULL) { 518 output()->print_cr("Dump failed - reason unknown"); 519 } else { 520 output()->print_cr("%s", error); 521 } 522 } 523 } 524 525 int HeapDumpDCmd::num_arguments() { 526 ResourceMark rm; 527 HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false); 528 if (dcmd != NULL) { 529 DCmdMark mark(dcmd); 530 return dcmd->_dcmdparser.num_arguments(); 531 } else { 532 return 0; 533 } 534 } 535 536 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) : 537 DCmdWithParser(output, heap), 538 _all("-all", "Inspect all objects, including unreachable objects", 539 "BOOLEAN", false, "false") { 540 _dcmdparser.add_dcmd_option(&_all); 541 } 542 543 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) { 544 VM_GC_HeapInspection heapop(output(), 545 !_all.value() /* request full gc if false */); 546 VMThread::execute(&heapop); 547 } 548 549 int ClassHistogramDCmd::num_arguments() { 550 ResourceMark rm; 551 ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false); 552 if (dcmd != NULL) { 553 DCmdMark mark(dcmd); 554 return dcmd->_dcmdparser.num_arguments(); 555 } else { 556 return 0; 557 } 558 } 559 560 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total" 561 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) : 562 DCmdWithParser(output, heap), 563 _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets", 564 "BOOLEAN", false, "false"), 565 _all("-all", "Show all columns", 566 "BOOLEAN", false, "false"), 567 _help("-help", "Show meaning of all the columns", 568 "BOOLEAN", false, "false"), 569 _columns("columns", "Comma-separated list of all the columns to show. " 570 "If not specified, the following columns are shown: " DEFAULT_COLUMNS, 571 "STRING", false) { 572 _dcmdparser.add_dcmd_option(&_all); 573 _dcmdparser.add_dcmd_option(&_csv); 574 _dcmdparser.add_dcmd_option(&_help); 575 _dcmdparser.add_dcmd_argument(&_columns); 576 } 577 578 void ClassStatsDCmd::execute(DCmdSource source, TRAPS) { 579 VM_GC_HeapInspection heapop(output(), 580 true /* request_full_gc */); 581 heapop.set_csv_format(_csv.value()); 582 heapop.set_print_help(_help.value()); 583 heapop.set_print_class_stats(true); 584 if (_all.value()) { 585 if (_columns.has_value()) { 586 output()->print_cr("Cannot specify -all and individual columns at the same time"); 587 return; 588 } else { 589 heapop.set_columns(NULL); 590 } 591 } else { 592 if (_columns.has_value()) { 593 heapop.set_columns(_columns.value()); 594 } else { 595 heapop.set_columns(DEFAULT_COLUMNS); 596 } 597 } 598 VMThread::execute(&heapop); 599 } 600 601 int ClassStatsDCmd::num_arguments() { 602 ResourceMark rm; 603 ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false); 604 if (dcmd != NULL) { 605 DCmdMark mark(dcmd); 606 return dcmd->_dcmdparser.num_arguments(); 607 } else { 608 return 0; 609 } 610 } 611 #endif // INCLUDE_SERVICES 612 613 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) : 614 DCmdWithParser(output, heap), 615 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false") { 616 _dcmdparser.add_dcmd_option(&_locks); 617 } 618 619 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) { 620 // thread stacks 621 VM_PrintThreads op1(output(), _locks.value()); 622 VMThread::execute(&op1); 623 624 // JNI global handles 625 VM_PrintJNI op2(output()); 626 VMThread::execute(&op2); 627 628 // Deadlock detection 629 VM_FindDeadlocks op3(output()); 630 VMThread::execute(&op3); 631 } 632 633 int ThreadDumpDCmd::num_arguments() { 634 ResourceMark rm; 635 ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false); 636 if (dcmd != NULL) { 637 DCmdMark mark(dcmd); 638 return dcmd->_dcmdparser.num_arguments(); 639 } else { 640 return 0; 641 } 642 } 643 644 // Enhanced JMX Agent support 645 646 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) : 647 648 DCmdWithParser(output, heap_allocated), 649 650 _config_file 651 ("config.file", 652 "set com.sun.management.config.file", "STRING", false), 653 654 _jmxremote_host 655 ("jmxremote.host", 656 "set com.sun.management.jmxremote.host", "STRING", false), 657 658 _jmxremote_port 659 ("jmxremote.port", 660 "set com.sun.management.jmxremote.port", "STRING", false), 661 662 _jmxremote_rmi_port 663 ("jmxremote.rmi.port", 664 "set com.sun.management.jmxremote.rmi.port", "STRING", false), 665 666 _jmxremote_ssl 667 ("jmxremote.ssl", 668 "set com.sun.management.jmxremote.ssl", "STRING", false), 669 670 _jmxremote_registry_ssl 671 ("jmxremote.registry.ssl", 672 "set com.sun.management.jmxremote.registry.ssl", "STRING", false), 673 674 _jmxremote_authenticate 675 ("jmxremote.authenticate", 676 "set com.sun.management.jmxremote.authenticate", "STRING", false), 677 678 _jmxremote_password_file 679 ("jmxremote.password.file", 680 "set com.sun.management.jmxremote.password.file", "STRING", false), 681 682 _jmxremote_access_file 683 ("jmxremote.access.file", 684 "set com.sun.management.jmxremote.access.file", "STRING", false), 685 686 _jmxremote_login_config 687 ("jmxremote.login.config", 688 "set com.sun.management.jmxremote.login.config", "STRING", false), 689 690 _jmxremote_ssl_enabled_cipher_suites 691 ("jmxremote.ssl.enabled.cipher.suites", 692 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false), 693 694 _jmxremote_ssl_enabled_protocols 695 ("jmxremote.ssl.enabled.protocols", 696 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false), 697 698 _jmxremote_ssl_need_client_auth 699 ("jmxremote.ssl.need.client.auth", 700 "set com.sun.management.jmxremote.need.client.auth", "STRING", false), 701 702 _jmxremote_ssl_config_file 703 ("jmxremote.ssl.config.file", 704 "set com.sun.management.jmxremote.ssl_config_file", "STRING", false), 705 706 // JDP Protocol support 707 _jmxremote_autodiscovery 708 ("jmxremote.autodiscovery", 709 "set com.sun.management.jmxremote.autodiscovery", "STRING", false), 710 711 _jdp_port 712 ("jdp.port", 713 "set com.sun.management.jdp.port", "INT", false), 714 715 _jdp_address 716 ("jdp.address", 717 "set com.sun.management.jdp.address", "STRING", false), 718 719 _jdp_source_addr 720 ("jdp.source_addr", 721 "set com.sun.management.jdp.source_addr", "STRING", false), 722 723 _jdp_ttl 724 ("jdp.ttl", 725 "set com.sun.management.jdp.ttl", "INT", false), 726 727 _jdp_pause 728 ("jdp.pause", 729 "set com.sun.management.jdp.pause", "INT", false), 730 731 _jdp_name 732 ("jdp.name", 733 "set com.sun.management.jdp.name", "STRING", false) 734 735 { 736 _dcmdparser.add_dcmd_option(&_config_file); 737 _dcmdparser.add_dcmd_option(&_jmxremote_host); 738 _dcmdparser.add_dcmd_option(&_jmxremote_port); 739 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port); 740 _dcmdparser.add_dcmd_option(&_jmxremote_ssl); 741 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl); 742 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate); 743 _dcmdparser.add_dcmd_option(&_jmxremote_password_file); 744 _dcmdparser.add_dcmd_option(&_jmxremote_access_file); 745 _dcmdparser.add_dcmd_option(&_jmxremote_login_config); 746 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites); 747 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols); 748 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth); 749 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file); 750 _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery); 751 _dcmdparser.add_dcmd_option(&_jdp_port); 752 _dcmdparser.add_dcmd_option(&_jdp_address); 753 _dcmdparser.add_dcmd_option(&_jdp_source_addr); 754 _dcmdparser.add_dcmd_option(&_jdp_ttl); 755 _dcmdparser.add_dcmd_option(&_jdp_pause); 756 _dcmdparser.add_dcmd_option(&_jdp_name); 757 } 758 759 760 int JMXStartRemoteDCmd::num_arguments() { 761 ResourceMark rm; 762 JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false); 763 if (dcmd != NULL) { 764 DCmdMark mark(dcmd); 765 return dcmd->_dcmdparser.num_arguments(); 766 } else { 767 return 0; 768 } 769 } 770 771 772 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) { 773 ResourceMark rm(THREAD); 774 HandleMark hm(THREAD); 775 776 // Load and initialize the jdk.internal.agent.Agent class 777 // invoke startRemoteManagementAgent(string) method to start 778 // the remote management server. 779 // throw java.lang.NoSuchMethodError if the method doesn't exist 780 781 loadAgentModule(CHECK); 782 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 783 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 784 785 JavaValue result(T_VOID); 786 787 // Pass all command line arguments to java as key=value,... 788 // All checks are done on java side 789 790 int len = 0; 791 stringStream options; 792 char comma[2] = {0,0}; 793 794 // Leave default values on Agent.class side and pass only 795 // agruments explicitly set by user. All arguments passed 796 // to jcmd override properties with the same name set by 797 // command line with -D or by managmenent.properties 798 // file. 799 #define PUT_OPTION(a) \ 800 do { \ 801 if ( (a).is_set() ){ \ 802 if ( *((a).type()) == 'I' ) { \ 803 options.print("%scom.sun.management.%s=" JLONG_FORMAT, comma, (a).name(), (jlong)((a).value())); \ 804 } else { \ 805 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (char*)((a).value())); \ 806 } \ 807 comma[0] = ','; \ 808 }\ 809 } while(0); 810 811 812 PUT_OPTION(_config_file); 813 PUT_OPTION(_jmxremote_host); 814 PUT_OPTION(_jmxremote_port); 815 PUT_OPTION(_jmxremote_rmi_port); 816 PUT_OPTION(_jmxremote_ssl); 817 PUT_OPTION(_jmxremote_registry_ssl); 818 PUT_OPTION(_jmxremote_authenticate); 819 PUT_OPTION(_jmxremote_password_file); 820 PUT_OPTION(_jmxremote_access_file); 821 PUT_OPTION(_jmxremote_login_config); 822 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites); 823 PUT_OPTION(_jmxremote_ssl_enabled_protocols); 824 PUT_OPTION(_jmxremote_ssl_need_client_auth); 825 PUT_OPTION(_jmxremote_ssl_config_file); 826 PUT_OPTION(_jmxremote_autodiscovery); 827 PUT_OPTION(_jdp_port); 828 PUT_OPTION(_jdp_address); 829 PUT_OPTION(_jdp_source_addr); 830 PUT_OPTION(_jdp_ttl); 831 PUT_OPTION(_jdp_pause); 832 PUT_OPTION(_jdp_name); 833 834 #undef PUT_OPTION 835 836 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK); 837 JavaCalls::call_static(&result, k, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK); 838 } 839 840 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) : 841 DCmd(output, heap_allocated) { 842 // do nothing 843 } 844 845 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) { 846 ResourceMark rm(THREAD); 847 HandleMark hm(THREAD); 848 849 // Load and initialize the jdk.internal.agent.Agent class 850 // invoke startLocalManagementAgent(void) method to start 851 // the local management server 852 // throw java.lang.NoSuchMethodError if method doesn't exist 853 854 loadAgentModule(CHECK); 855 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 856 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 857 858 JavaValue result(T_VOID); 859 JavaCalls::call_static(&result, k, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK); 860 } 861 862 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) { 863 ResourceMark rm(THREAD); 864 HandleMark hm(THREAD); 865 866 // Load and initialize the jdk.internal.agent.Agent class 867 // invoke stopRemoteManagementAgent method to stop the 868 // management server 869 // throw java.lang.NoSuchMethodError if method doesn't exist 870 871 loadAgentModule(CHECK); 872 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 873 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 874 875 JavaValue result(T_VOID); 876 JavaCalls::call_static(&result, k, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK); 877 } 878 879 JMXStatusDCmd::JMXStatusDCmd(outputStream *output, bool heap_allocated) : 880 DCmd(output, heap_allocated) { 881 // do nothing 882 } 883 884 void JMXStatusDCmd::execute(DCmdSource source, TRAPS) { 885 ResourceMark rm(THREAD); 886 HandleMark hm(THREAD); 887 888 // Load and initialize the jdk.internal.agent.Agent class 889 // invoke getManagementAgentStatus() method to generate the status info 890 // throw java.lang.NoSuchMethodError if method doesn't exist 891 892 loadAgentModule(CHECK); 893 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 894 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 895 896 JavaValue result(T_OBJECT); 897 JavaCalls::call_static(&result, k, vmSymbols::getAgentStatus_name(), vmSymbols::void_string_signature(), CHECK); 898 899 jvalue* jv = (jvalue*) result.get_value_addr(); 900 oop str = (oop) jv->l; 901 if (str != NULL) { 902 char* out = java_lang_String::as_utf8_string(str); 903 if (out) { 904 output()->print_cr("%s", out); 905 return; 906 } 907 } 908 output()->print_cr("Error obtaining management agent status"); 909 } 910 911 VMDynamicLibrariesDCmd::VMDynamicLibrariesDCmd(outputStream *output, bool heap_allocated) : 912 DCmd(output, heap_allocated) { 913 // do nothing 914 } 915 916 void VMDynamicLibrariesDCmd::execute(DCmdSource source, TRAPS) { 917 os::print_dll_info(output()); 918 output()->cr(); 919 } 920 921 void CompileQueueDCmd::execute(DCmdSource source, TRAPS) { 922 VM_PrintCompileQueue printCompileQueueOp(output()); 923 VMThread::execute(&printCompileQueueOp); 924 } 925 926 void CodeListDCmd::execute(DCmdSource source, TRAPS) { 927 CodeCache::print_codelist(output()); 928 } 929 930 void CodeCacheDCmd::execute(DCmdSource source, TRAPS) { 931 CodeCache::print_layout(output()); 932 } 933 934 //---< BEGIN >--- CodeHeap State Analytics. 935 CodeHeapAnalyticsDCmd::CodeHeapAnalyticsDCmd(outputStream* output, bool heap) : 936 DCmdWithParser(output, heap), 937 _function("function", "Function to be performed (aggregate, UsedSpace, FreeSpace, MethodCount, MethodSpace, MethodAge, MethodNames, discard", "STRING", false, "all"), 938 _granularity("granularity", "Detail level - smaller value -> more detail", "STRING", false, "4096") { 939 _dcmdparser.add_dcmd_argument(&_function); 940 _dcmdparser.add_dcmd_argument(&_granularity); 941 } 942 943 void CodeHeapAnalyticsDCmd::execute(DCmdSource source, TRAPS) { 944 CompileBroker::print_heapinfo(output(), _function.value(), _granularity.value()); 945 } 946 947 int CodeHeapAnalyticsDCmd::num_arguments() { 948 ResourceMark rm; 949 CodeHeapAnalyticsDCmd* dcmd = new CodeHeapAnalyticsDCmd(NULL, false); 950 if (dcmd != NULL) { 951 DCmdMark mark(dcmd); 952 return dcmd->_dcmdparser.num_arguments(); 953 } else { 954 return 0; 955 } 956 } 957 //---< END >--- CodeHeap State Analytics. 958 959 void CompilerDirectivesPrintDCmd::execute(DCmdSource source, TRAPS) { 960 DirectivesStack::print(output()); 961 } 962 963 CompilerDirectivesAddDCmd::CompilerDirectivesAddDCmd(outputStream* output, bool heap) : 964 DCmdWithParser(output, heap), 965 _filename("filename","Name of the directives file", "STRING",true) { 966 _dcmdparser.add_dcmd_argument(&_filename); 967 } 968 969 void CompilerDirectivesAddDCmd::execute(DCmdSource source, TRAPS) { 970 DirectivesParser::parse_from_file(_filename.value(), output()); 971 } 972 973 int CompilerDirectivesAddDCmd::num_arguments() { 974 ResourceMark rm; 975 CompilerDirectivesAddDCmd* dcmd = new CompilerDirectivesAddDCmd(NULL, false); 976 if (dcmd != NULL) { 977 DCmdMark mark(dcmd); 978 return dcmd->_dcmdparser.num_arguments(); 979 } else { 980 return 0; 981 } 982 } 983 984 void CompilerDirectivesRemoveDCmd::execute(DCmdSource source, TRAPS) { 985 DirectivesStack::pop(1); 986 } 987 988 void CompilerDirectivesClearDCmd::execute(DCmdSource source, TRAPS) { 989 DirectivesStack::clear(); 990 } 991 #if INCLUDE_SERVICES 992 ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) : 993 DCmdWithParser(output, heap), 994 _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"), 995 _print_subclasses("-s", "If a classname is specified, print its subclasses. " 996 "Otherwise only its superclasses are printed.", "BOOLEAN", false, "false"), 997 _classname("classname", "Name of class whose hierarchy should be printed. " 998 "If not specified, all class hierarchies are printed.", 999 "STRING", false) { 1000 _dcmdparser.add_dcmd_option(&_print_interfaces); 1001 _dcmdparser.add_dcmd_option(&_print_subclasses); 1002 _dcmdparser.add_dcmd_argument(&_classname); 1003 } 1004 1005 void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) { 1006 VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(), 1007 _print_subclasses.value(), _classname.value()); 1008 VMThread::execute(&printClassHierarchyOp); 1009 } 1010 1011 int ClassHierarchyDCmd::num_arguments() { 1012 ResourceMark rm; 1013 ClassHierarchyDCmd* dcmd = new ClassHierarchyDCmd(NULL, false); 1014 if (dcmd != NULL) { 1015 DCmdMark mark(dcmd); 1016 return dcmd->_dcmdparser.num_arguments(); 1017 } else { 1018 return 0; 1019 } 1020 } 1021 1022 #endif 1023 1024 class VM_DumpTouchedMethods : public VM_Operation { 1025 private: 1026 outputStream* _out; 1027 public: 1028 VM_DumpTouchedMethods(outputStream* out) { 1029 _out = out; 1030 } 1031 1032 virtual VMOp_Type type() const { return VMOp_DumpTouchedMethods; } 1033 1034 virtual void doit() { 1035 Method::print_touched_methods(_out); 1036 } 1037 }; 1038 1039 TouchedMethodsDCmd::TouchedMethodsDCmd(outputStream* output, bool heap) : 1040 DCmdWithParser(output, heap) 1041 {} 1042 1043 void TouchedMethodsDCmd::execute(DCmdSource source, TRAPS) { 1044 if (!LogTouchedMethods) { 1045 output()->print_cr("VM.print_touched_methods command requires -XX:+LogTouchedMethods"); 1046 return; 1047 } 1048 VM_DumpTouchedMethods dumper(output()); 1049 VMThread::execute(&dumper); 1050 } 1051 1052 int TouchedMethodsDCmd::num_arguments() { 1053 return 0; 1054 }