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