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