1 /* 2 * Copyright (c) 2011, 2024, 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 "cds/cdsConfig.hpp" 27 #include "cds/cdsEndTrainingUpcall.hpp" 28 #include "cds/cds_globals.hpp" 29 #include "classfile/classLoaderDataGraph.hpp" 30 #include "classfile/classLoaderHierarchyDCmd.hpp" 31 #include "classfile/classLoaderStats.hpp" 32 #include "classfile/javaClasses.hpp" 33 #include "classfile/systemDictionary.hpp" 34 #include "classfile/vmClasses.hpp" 35 #include "code/codeCache.hpp" 36 #include "compiler/compilationMemoryStatistic.hpp" 37 #include "compiler/compiler_globals.hpp" 38 #include "compiler/compileBroker.hpp" 39 #include "compiler/directivesParser.hpp" 40 #include "gc/shared/gcVMOperations.hpp" 41 #include "jvm.h" 42 #include "memory/metaspace/metaspaceDCmd.hpp" 43 #include "memory/resourceArea.hpp" 44 #include "memory/universe.hpp" 45 #include "nmt/memMapPrinter.hpp" 46 #include "nmt/memTracker.hpp" 47 #include "nmt/nmtDCmd.hpp" 48 #include "oops/instanceKlass.hpp" 49 #include "oops/objArrayOop.inline.hpp" 50 #include "oops/oop.inline.hpp" 51 #include "oops/typeArrayOop.inline.hpp" 52 #include "prims/jvmtiAgentList.hpp" 53 #include "runtime/fieldDescriptor.inline.hpp" 54 #include "runtime/flags/jvmFlag.hpp" 55 #include "runtime/handles.inline.hpp" 56 #include "runtime/javaCalls.hpp" 57 #include "runtime/jniHandles.hpp" 58 #include "runtime/os.hpp" 59 #include "runtime/vmOperations.hpp" 60 #include "runtime/vm_version.hpp" 61 #include "services/diagnosticArgument.hpp" 62 #include "services/diagnosticCommand.hpp" 63 #include "services/diagnosticFramework.hpp" 64 #include "services/heapDumper.hpp" 65 #include "services/management.hpp" 66 #include "services/writeableFlags.hpp" 67 #include "utilities/debug.hpp" 68 #include "utilities/events.hpp" 69 #include "utilities/formatBuffer.hpp" 70 #include "utilities/macros.hpp" 71 #include "utilities/parseInteger.hpp" 72 #ifdef LINUX 73 #include "os_posix.hpp" 74 #include "mallocInfoDcmd.hpp" 75 #include "trimCHeapDCmd.hpp" 76 #include <errno.h> 77 #endif 78 79 static void loadAgentModule(TRAPS) { 80 ResourceMark rm(THREAD); 81 HandleMark hm(THREAD); 82 83 JavaValue result(T_OBJECT); 84 Handle h_module_name = java_lang_String::create_from_str("jdk.management.agent", CHECK); 85 JavaCalls::call_static(&result, 86 vmClasses::module_Modules_klass(), 87 vmSymbols::loadModule_name(), 88 vmSymbols::loadModule_signature(), 89 h_module_name, 90 THREAD); 91 } 92 93 void DCmd::register_dcmds(){ 94 // Registration of the diagnostic commands 95 // First argument specifies which interfaces will export the command 96 // Second argument specifies if the command is enabled 97 // Third argument specifies if the command is hidden 98 uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI 99 | DCmd_Source_MBean; 100 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(full_export, true, false)); 101 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(full_export, true, false)); 102 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(full_export, true, false)); 103 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(full_export, true, false)); 104 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(full_export, true, false)); 105 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SetVMFlagDCmd>(full_export, true, false)); 106 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMDynamicLibrariesDCmd>(full_export, true, false)); 107 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(full_export, true, false)); 108 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMInfoDCmd>(full_export, true, false)); 109 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(full_export, true, false)); 110 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(full_export, true, false)); 111 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapInfoDCmd>(full_export, true, false)); 112 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<FinalizerInfoDCmd>(full_export, true, false)); 113 #if INCLUDE_SERVICES 114 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false)); 115 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(full_export, true, false)); 116 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemDictionaryDCmd>(full_export, true, false)); 117 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHierarchyDCmd>(full_export, true, false)); 118 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassesDCmd>(full_export, true, false)); 119 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SymboltableDCmd>(full_export, true, false)); 120 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<StringtableDCmd>(full_export, true, false)); 121 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<metaspace::MetaspaceDCmd>(full_export, true, false)); 122 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<EventLogDCmd>(full_export, true, false)); 123 #if INCLUDE_JVMTI // Both JVMTI and SERVICES have to be enabled to have this dcmd 124 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIAgentLoadDCmd>(full_export, true, false)); 125 #endif // INCLUDE_JVMTI 126 #endif // INCLUDE_SERVICES 127 #if INCLUDE_JVMTI 128 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JVMTIDataDumpDCmd>(full_export, true, false)); 129 #endif // INCLUDE_JVMTI 130 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false)); 131 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpToFileDCmd>(full_export, true, false)); 132 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderStatsDCmd>(full_export, true, false)); 133 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassLoaderHierarchyDCmd>(full_export, true, false)); 134 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompileQueueDCmd>(full_export, true, false)); 135 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeListDCmd>(full_export, true, false)); 136 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeCacheDCmd>(full_export, true, false)); 137 #if INCLUDE_CDS 138 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<AOTEndTrainingDCmd>(full_export, true, false)); 139 #endif // INCLUDE_CDS 140 #ifdef LINUX 141 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PerfMapDCmd>(full_export, true, false)); 142 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<TrimCLibcHeapDCmd>(full_export, true, false)); 143 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<MallocInfoDcmd>(full_export, true, false)); 144 #endif // LINUX 145 #if defined(LINUX) || defined(_WIN64) 146 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemMapDCmd>(full_export, true,false)); 147 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemDumpMapDCmd>(full_export, true,false)); 148 #endif // LINUX or WINDOWS 149 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CodeHeapAnalyticsDCmd>(full_export, true, false)); 150 151 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesPrintDCmd>(full_export, true, false)); 152 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesAddDCmd>(full_export, true, false)); 153 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesRemoveDCmd>(full_export, true, false)); 154 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilerDirectivesClearDCmd>(full_export, true, false)); 155 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CompilationMemoryStatisticDCmd>(full_export, true, false)); 156 157 // Enhanced JMX Agent Support 158 // These commands won't be exported via the DiagnosticCommandMBean until an 159 // appropriate permission is created for them 160 uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI; 161 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false)); 162 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false)); 163 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false)); 164 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStatusDCmd>(jmx_agent_export_flags, true,false)); 165 166 #if INCLUDE_CDS 167 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<DumpSharedArchiveDCmd>(full_export, true, false)); 168 #endif // INCLUDE_CDS 169 170 DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<NMTDCmd>(full_export, true, false)); 171 } 172 173 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap), 174 _all("-all", "Show help for all commands", "BOOLEAN", false, "false"), 175 _cmd("command name", "The name of the command for which we want help", 176 "STRING", false) { 177 _dcmdparser.add_dcmd_option(&_all); 178 _dcmdparser.add_dcmd_argument(&_cmd); 179 }; 180 181 182 static int compare_strings(const char** s1, const char** s2) { 183 return ::strcmp(*s1, *s2); 184 } 185 186 void HelpDCmd::execute(DCmdSource source, TRAPS) { 187 if (_all.value()) { 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 output()->print_cr("\t%s", factory->description()); 196 output()->cr(); 197 factory = factory->next(); 198 } 199 } else if (_cmd.has_value()) { 200 DCmd* cmd = nullptr; 201 DCmdFactory* factory = DCmdFactory::factory(source, _cmd.value(), 202 strlen(_cmd.value())); 203 if (factory != nullptr) { 204 output()->print_cr("%s%s", factory->name(), 205 factory->is_enabled() ? "" : " [disabled]"); 206 output()->print_cr("%s", factory->description()); 207 output()->print_cr("\nImpact: %s", factory->impact()); 208 output()->cr(); 209 cmd = factory->create_resource_instance(output()); 210 if (cmd != nullptr) { 211 DCmdMark mark(cmd); 212 cmd->print_help(factory->name()); 213 } 214 } else { 215 output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value()); 216 } 217 } else { 218 output()->print_cr("The following commands are available:"); 219 GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(source); 220 cmd_list->sort(compare_strings); 221 for (int i = 0; i < cmd_list->length(); i++) { 222 DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i), 223 strlen(cmd_list->at(i))); 224 output()->print_cr("%s%s", factory->name(), 225 factory->is_enabled() ? "" : " [disabled]"); 226 factory = factory->_next; 227 } 228 output()->print_cr("\nFor more information about a specific command use 'help <command>'."); 229 } 230 } 231 232 void VersionDCmd::execute(DCmdSource source, TRAPS) { 233 output()->print_cr("%s version %s", VM_Version::vm_name(), 234 VM_Version::vm_release()); 235 JDK_Version jdk_version = JDK_Version::current(); 236 if (jdk_version.patch_version() > 0) { 237 output()->print_cr("JDK %d.%d.%d.%d", jdk_version.major_version(), 238 jdk_version.minor_version(), jdk_version.security_version(), 239 jdk_version.patch_version()); 240 } else { 241 output()->print_cr("JDK %d.%d.%d", jdk_version.major_version(), 242 jdk_version.minor_version(), jdk_version.security_version()); 243 } 244 } 245 246 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) : 247 DCmdWithParser(output, heap), 248 _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") { 249 _dcmdparser.add_dcmd_option(&_all); 250 } 251 252 void PrintVMFlagsDCmd::execute(DCmdSource source, TRAPS) { 253 if (_all.value()) { 254 JVMFlag::printFlags(output(), true); 255 } else { 256 JVMFlag::printSetFlags(output()); 257 } 258 } 259 260 SetVMFlagDCmd::SetVMFlagDCmd(outputStream* output, bool heap) : 261 DCmdWithParser(output, heap), 262 _flag("flag name", "The name of the flag we want to set", 263 "STRING", true), 264 _value("string value", "The value we want to set", "STRING", false) { 265 _dcmdparser.add_dcmd_argument(&_flag); 266 _dcmdparser.add_dcmd_argument(&_value); 267 } 268 269 void SetVMFlagDCmd::execute(DCmdSource source, TRAPS) { 270 const char* val = nullptr; 271 if (_value.value() != nullptr) { 272 val = _value.value(); 273 } 274 275 FormatBuffer<80> err_msg("%s", ""); 276 int ret = WriteableFlags::set_flag(_flag.value(), val, JVMFlagOrigin::MANAGEMENT, err_msg); 277 278 if (ret != JVMFlag::SUCCESS) { 279 output()->print_cr("%s", err_msg.buffer()); 280 } 281 } 282 283 void JVMTIDataDumpDCmd::execute(DCmdSource source, TRAPS) { 284 if (JvmtiExport::should_post_data_dump()) { 285 JvmtiExport::post_data_dump(); 286 } 287 } 288 289 #if INCLUDE_SERVICES 290 #if INCLUDE_JVMTI 291 JVMTIAgentLoadDCmd::JVMTIAgentLoadDCmd(outputStream* output, bool heap) : 292 DCmdWithParser(output, heap), 293 _libpath("library path", "Absolute path of the JVMTI agent to load.", 294 "STRING", true), 295 _option("agent option", "Option string to pass the agent.", "STRING", false) { 296 _dcmdparser.add_dcmd_argument(&_libpath); 297 _dcmdparser.add_dcmd_argument(&_option); 298 } 299 300 void JVMTIAgentLoadDCmd::execute(DCmdSource source, TRAPS) { 301 302 if (_libpath.value() == nullptr) { 303 output()->print_cr("JVMTI.agent_load dcmd needs library path."); 304 return; 305 } 306 307 char *suffix = strrchr(_libpath.value(), '.'); 308 bool is_java_agent = (suffix != nullptr) && (strncmp(".jar", suffix, 4) == 0); 309 310 if (is_java_agent) { 311 if (_option.value() == nullptr) { 312 JvmtiAgentList::load_agent("instrument", false, _libpath.value(), output()); 313 } else { 314 size_t opt_len = strlen(_libpath.value()) + strlen(_option.value()) + 2; 315 if (opt_len > 4096) { 316 output()->print_cr("JVMTI agent attach failed: Options is too long."); 317 return; 318 } 319 320 char *opt = (char *)os::malloc(opt_len, mtInternal); 321 if (opt == nullptr) { 322 output()->print_cr("JVMTI agent attach failed: " 323 "Could not allocate " SIZE_FORMAT " bytes for argument.", 324 opt_len); 325 return; 326 } 327 328 jio_snprintf(opt, opt_len, "%s=%s", _libpath.value(), _option.value()); 329 JvmtiAgentList::load_agent("instrument", false, opt, output()); 330 331 os::free(opt); 332 } 333 } else { 334 JvmtiAgentList::load_agent(_libpath.value(), true, _option.value(), output()); 335 } 336 } 337 338 #endif // INCLUDE_JVMTI 339 #endif // INCLUDE_SERVICES 340 341 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) { 342 // load VMSupport 343 Symbol* klass = vmSymbols::jdk_internal_vm_VMSupport(); 344 Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK); 345 InstanceKlass* ik = InstanceKlass::cast(k); 346 if (ik->should_be_initialized()) { 347 ik->initialize(THREAD); 348 } 349 if (HAS_PENDING_EXCEPTION) { 350 java_lang_Throwable::print(PENDING_EXCEPTION, output()); 351 output()->cr(); 352 CLEAR_PENDING_EXCEPTION; 353 return; 354 } 355 356 // invoke the serializePropertiesToByteArray method 357 JavaValue result(T_OBJECT); 358 JavaCallArguments args; 359 360 Symbol* signature = vmSymbols::void_byte_array_signature(); 361 JavaCalls::call_static(&result, 362 ik, 363 vmSymbols::serializePropertiesToByteArray_name(), 364 signature, 365 &args, 366 THREAD); 367 if (HAS_PENDING_EXCEPTION) { 368 java_lang_Throwable::print(PENDING_EXCEPTION, output()); 369 output()->cr(); 370 CLEAR_PENDING_EXCEPTION; 371 return; 372 } 373 374 // The result should be a [B 375 oop res = result.get_oop(); 376 assert(res->is_typeArray(), "just checking"); 377 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking"); 378 379 // copy the bytes to the output stream 380 typeArrayOop ba = typeArrayOop(res); 381 jbyte* addr = typeArrayOop(res)->byte_at_addr(0); 382 output()->print_raw((const char*)addr, ba->length()); 383 } 384 385 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) : 386 DCmdWithParser(output, heap), 387 _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") { 388 _dcmdparser.add_dcmd_option(&_date); 389 } 390 391 void VMUptimeDCmd::execute(DCmdSource source, TRAPS) { 392 if (_date.value()) { 393 output()->date_stamp(true, "", ": "); 394 } 395 output()->time_stamp().update_to(tty->time_stamp().ticks()); 396 output()->stamp(); 397 output()->print_cr(" s"); 398 } 399 400 void VMInfoDCmd::execute(DCmdSource source, TRAPS) { 401 VMError::print_vm_info(_output); 402 } 403 404 void SystemGCDCmd::execute(DCmdSource source, TRAPS) { 405 Universe::heap()->collect(GCCause::_dcmd_gc_run); 406 } 407 408 void RunFinalizationDCmd::execute(DCmdSource source, TRAPS) { 409 Klass* k = vmClasses::System_klass(); 410 JavaValue result(T_VOID); 411 JavaCalls::call_static(&result, k, 412 vmSymbols::run_finalization_name(), 413 vmSymbols::void_method_signature(), CHECK); 414 } 415 416 void HeapInfoDCmd::execute(DCmdSource source, TRAPS) { 417 MutexLocker hl(THREAD, Heap_lock); 418 Universe::heap()->print_on(output()); 419 } 420 421 void FinalizerInfoDCmd::execute(DCmdSource source, TRAPS) { 422 ResourceMark rm(THREAD); 423 424 if (!InstanceKlass::is_finalization_enabled()) { 425 output()->print_cr("Finalization is disabled"); 426 return; 427 } 428 429 Klass* k = SystemDictionary::resolve_or_fail( 430 vmSymbols::finalizer_histogram_klass(), true, CHECK); 431 432 JavaValue result(T_ARRAY); 433 434 // We are calling lang.ref.FinalizerHistogram.getFinalizerHistogram() method 435 // and expect it to return array of FinalizerHistogramEntry as Object[] 436 437 JavaCalls::call_static(&result, k, 438 vmSymbols::get_finalizer_histogram_name(), 439 vmSymbols::void_finalizer_histogram_entry_array_signature(), CHECK); 440 441 objArrayOop result_oop = (objArrayOop) result.get_oop(); 442 if (result_oop->length() == 0) { 443 output()->print_cr("No instances waiting for finalization found"); 444 return; 445 } 446 447 oop foop = result_oop->obj_at(0); 448 InstanceKlass* ik = InstanceKlass::cast(foop->klass()); 449 450 fieldDescriptor count_fd, name_fd; 451 452 Klass* count_res = ik->find_field( 453 vmSymbols::finalizer_histogram_entry_count_field(), vmSymbols::int_signature(), &count_fd); 454 455 Klass* name_res = ik->find_field( 456 vmSymbols::finalizer_histogram_entry_name_field(), vmSymbols::string_signature(), &name_fd); 457 458 assert(count_res != nullptr && name_res != nullptr, "Unexpected layout of FinalizerHistogramEntry"); 459 460 output()->print_cr("Unreachable instances waiting for finalization"); 461 output()->print_cr("#instances class name"); 462 output()->print_cr("-----------------------"); 463 464 for (int i = 0; i < result_oop->length(); ++i) { 465 oop element_oop = result_oop->obj_at(i); 466 oop str_oop = element_oop->obj_field(name_fd.offset()); 467 char *name = java_lang_String::as_utf8_string(str_oop); 468 int count = element_oop->int_field(count_fd.offset()); 469 output()->print_cr("%10d %s", count, name); 470 } 471 } 472 473 #if INCLUDE_SERVICES // Heap dumping/inspection supported 474 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) : 475 DCmdWithParser(output, heap), 476 _filename("filename","Name of the dump file", "FILE",true), 477 _all("-all", "Dump all objects, including unreachable objects", 478 "BOOLEAN", false, "false"), 479 _gzip("-gz", "If specified, the heap dump is written in gzipped format " 480 "using the given compression level. 1 (recommended) is the fastest, " 481 "9 the strongest compression.", "INT", false, "1"), 482 _overwrite("-overwrite", "If specified, the dump file will be overwritten if it exists", 483 "BOOLEAN", false, "false"), 484 _parallel("-parallel", "Number of parallel threads to use for heap dump. The VM " 485 "will try to use the specified number of threads, but might use fewer.", 486 "INT", false, "1") { 487 _dcmdparser.add_dcmd_option(&_all); 488 _dcmdparser.add_dcmd_argument(&_filename); 489 _dcmdparser.add_dcmd_option(&_gzip); 490 _dcmdparser.add_dcmd_option(&_overwrite); 491 _dcmdparser.add_dcmd_option(&_parallel); 492 } 493 494 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) { 495 jlong level = -1; // -1 means no compression. 496 jlong parallel = HeapDumper::default_num_of_dump_threads(); 497 498 if (_gzip.is_set()) { 499 level = _gzip.value(); 500 501 if (level < 1 || level > 9) { 502 output()->print_cr("Compression level out of range (1-9): " JLONG_FORMAT, level); 503 return; 504 } 505 } 506 507 if (_parallel.is_set()) { 508 parallel = _parallel.value(); 509 510 if (parallel < 0) { 511 output()->print_cr("Invalid number of parallel dump threads."); 512 return; 513 } else if (parallel == 0) { 514 // 0 implies to disable parallel heap dump, in such case, we use serial dump instead 515 parallel = 1; 516 } 517 } 518 519 // Request a full GC before heap dump if _all is false 520 // This helps reduces the amount of unreachable objects in the dump 521 // and makes it easier to browse. 522 HeapDumper dumper(!_all.value() /* request GC if _all is false*/); 523 dumper.dump(_filename.value(), output(), (int) level, _overwrite.value(), (uint)parallel); 524 } 525 526 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) : 527 DCmdWithParser(output, heap), 528 _all("-all", "Inspect all objects, including unreachable objects", 529 "BOOLEAN", false, "false"), 530 _parallel_thread_num("-parallel", 531 "Number of parallel threads to use for heap inspection. " 532 "0 (the default) means let the VM determine the number of threads to use. " 533 "1 means use one thread (disable parallelism). " 534 "For any other value the VM will try to use the specified number of " 535 "threads, but might use fewer.", 536 "INT", false, "0") { 537 _dcmdparser.add_dcmd_option(&_all); 538 _dcmdparser.add_dcmd_option(&_parallel_thread_num); 539 } 540 541 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) { 542 jlong num = _parallel_thread_num.value(); 543 if (num < 0) { 544 output()->print_cr("Parallel thread number out of range (>=0): " JLONG_FORMAT, num); 545 return; 546 } 547 uint parallel_thread_num = num == 0 548 ? MAX2<uint>(1, (uint)os::initial_active_processor_count() * 3 / 8) 549 : num; 550 VM_GC_HeapInspection heapop(output(), 551 !_all.value(), /* request full gc if false */ 552 parallel_thread_num); 553 VMThread::execute(&heapop); 554 } 555 556 #endif // INCLUDE_SERVICES 557 558 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) : 559 DCmdWithParser(output, heap), 560 _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false"), 561 _extended("-e", "print extended thread information", "BOOLEAN", false, "false") { 562 _dcmdparser.add_dcmd_option(&_locks); 563 _dcmdparser.add_dcmd_option(&_extended); 564 } 565 566 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) { 567 // thread stacks and JNI global handles 568 VM_PrintThreads op1(output(), _locks.value(), _extended.value(), true /* print JNI handle info */); 569 VMThread::execute(&op1); 570 571 // Deadlock detection 572 VM_FindDeadlocks op2(output()); 573 VMThread::execute(&op2); 574 } 575 576 // Enhanced JMX Agent support 577 578 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) : 579 580 DCmdWithParser(output, heap_allocated), 581 582 _config_file 583 ("config.file", 584 "set com.sun.management.config.file", "STRING", false), 585 586 _jmxremote_host 587 ("jmxremote.host", 588 "set com.sun.management.jmxremote.host", "STRING", false), 589 590 _jmxremote_port 591 ("jmxremote.port", 592 "set com.sun.management.jmxremote.port", "STRING", false), 593 594 _jmxremote_rmi_port 595 ("jmxremote.rmi.port", 596 "set com.sun.management.jmxremote.rmi.port", "STRING", false), 597 598 _jmxremote_ssl 599 ("jmxremote.ssl", 600 "set com.sun.management.jmxremote.ssl", "STRING", false), 601 602 _jmxremote_registry_ssl 603 ("jmxremote.registry.ssl", 604 "set com.sun.management.jmxremote.registry.ssl", "STRING", false), 605 606 _jmxremote_authenticate 607 ("jmxremote.authenticate", 608 "set com.sun.management.jmxremote.authenticate", "STRING", false), 609 610 _jmxremote_password_file 611 ("jmxremote.password.file", 612 "set com.sun.management.jmxremote.password.file", "STRING", false), 613 614 _jmxremote_access_file 615 ("jmxremote.access.file", 616 "set com.sun.management.jmxremote.access.file", "STRING", false), 617 618 _jmxremote_login_config 619 ("jmxremote.login.config", 620 "set com.sun.management.jmxremote.login.config", "STRING", false), 621 622 _jmxremote_ssl_enabled_cipher_suites 623 ("jmxremote.ssl.enabled.cipher.suites", 624 "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false), 625 626 _jmxremote_ssl_enabled_protocols 627 ("jmxremote.ssl.enabled.protocols", 628 "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false), 629 630 _jmxremote_ssl_need_client_auth 631 ("jmxremote.ssl.need.client.auth", 632 "set com.sun.management.jmxremote.need.client.auth", "STRING", false), 633 634 _jmxremote_ssl_config_file 635 ("jmxremote.ssl.config.file", 636 "set com.sun.management.jmxremote.ssl.config.file", "STRING", false), 637 638 // JDP Protocol support 639 _jmxremote_autodiscovery 640 ("jmxremote.autodiscovery", 641 "set com.sun.management.jmxremote.autodiscovery", "STRING", false), 642 643 _jdp_port 644 ("jdp.port", 645 "set com.sun.management.jdp.port", "INT", false), 646 647 _jdp_address 648 ("jdp.address", 649 "set com.sun.management.jdp.address", "STRING", false), 650 651 _jdp_source_addr 652 ("jdp.source_addr", 653 "set com.sun.management.jdp.source_addr", "STRING", false), 654 655 _jdp_ttl 656 ("jdp.ttl", 657 "set com.sun.management.jdp.ttl", "INT", false), 658 659 _jdp_pause 660 ("jdp.pause", 661 "set com.sun.management.jdp.pause", "INT", false), 662 663 _jdp_name 664 ("jdp.name", 665 "set com.sun.management.jdp.name", "STRING", false) 666 667 { 668 _dcmdparser.add_dcmd_option(&_config_file); 669 _dcmdparser.add_dcmd_option(&_jmxremote_host); 670 _dcmdparser.add_dcmd_option(&_jmxremote_port); 671 _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port); 672 _dcmdparser.add_dcmd_option(&_jmxremote_ssl); 673 _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl); 674 _dcmdparser.add_dcmd_option(&_jmxremote_authenticate); 675 _dcmdparser.add_dcmd_option(&_jmxremote_password_file); 676 _dcmdparser.add_dcmd_option(&_jmxremote_access_file); 677 _dcmdparser.add_dcmd_option(&_jmxremote_login_config); 678 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites); 679 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols); 680 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth); 681 _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file); 682 _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery); 683 _dcmdparser.add_dcmd_option(&_jdp_port); 684 _dcmdparser.add_dcmd_option(&_jdp_address); 685 _dcmdparser.add_dcmd_option(&_jdp_source_addr); 686 _dcmdparser.add_dcmd_option(&_jdp_ttl); 687 _dcmdparser.add_dcmd_option(&_jdp_pause); 688 _dcmdparser.add_dcmd_option(&_jdp_name); 689 } 690 691 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) { 692 ResourceMark rm(THREAD); 693 HandleMark hm(THREAD); 694 695 // Load and initialize the jdk.internal.agent.Agent class 696 // invoke startRemoteManagementAgent(string) method to start 697 // the remote management server. 698 // throw java.lang.NoSuchMethodError if the method doesn't exist 699 700 loadAgentModule(CHECK); 701 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 702 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 703 704 JavaValue result(T_VOID); 705 706 // Pass all command line arguments to java as key=value,... 707 // All checks are done on java side 708 709 int len = 0; 710 stringStream options; 711 char comma[2] = {0,0}; 712 713 // Leave default values on Agent.class side and pass only 714 // arguments explicitly set by user. All arguments passed 715 // to jcmd override properties with the same name set by 716 // command line with -D or by managmenent.properties 717 // file. 718 #define PUT_OPTION(a) \ 719 do { \ 720 if ( (a).is_set() ){ \ 721 if ( *((a).type()) == 'I' ) { \ 722 options.print("%scom.sun.management.%s=" JLONG_FORMAT, comma, (a).name(), (jlong)((a).value())); \ 723 } else { \ 724 options.print("%scom.sun.management.%s=%s", comma, (a).name(), (char*)((a).value())); \ 725 } \ 726 comma[0] = ','; \ 727 }\ 728 } while(0); 729 730 731 PUT_OPTION(_config_file); 732 PUT_OPTION(_jmxremote_host); 733 PUT_OPTION(_jmxremote_port); 734 PUT_OPTION(_jmxremote_rmi_port); 735 PUT_OPTION(_jmxremote_ssl); 736 PUT_OPTION(_jmxremote_registry_ssl); 737 PUT_OPTION(_jmxremote_authenticate); 738 PUT_OPTION(_jmxremote_password_file); 739 PUT_OPTION(_jmxremote_access_file); 740 PUT_OPTION(_jmxremote_login_config); 741 PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites); 742 PUT_OPTION(_jmxremote_ssl_enabled_protocols); 743 PUT_OPTION(_jmxremote_ssl_need_client_auth); 744 PUT_OPTION(_jmxremote_ssl_config_file); 745 PUT_OPTION(_jmxremote_autodiscovery); 746 PUT_OPTION(_jdp_port); 747 PUT_OPTION(_jdp_address); 748 PUT_OPTION(_jdp_source_addr); 749 PUT_OPTION(_jdp_ttl); 750 PUT_OPTION(_jdp_pause); 751 PUT_OPTION(_jdp_name); 752 753 #undef PUT_OPTION 754 755 Handle str = java_lang_String::create_from_str(options.as_string(), CHECK); 756 JavaCalls::call_static(&result, k, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK); 757 } 758 759 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) : 760 DCmd(output, heap_allocated) { 761 // do nothing 762 } 763 764 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) { 765 ResourceMark rm(THREAD); 766 HandleMark hm(THREAD); 767 768 // Load and initialize the jdk.internal.agent.Agent class 769 // invoke startLocalManagementAgent(void) method to start 770 // the local management server 771 // throw java.lang.NoSuchMethodError if method doesn't exist 772 773 loadAgentModule(CHECK); 774 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 775 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 776 777 JavaValue result(T_VOID); 778 JavaCalls::call_static(&result, k, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK); 779 } 780 781 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) { 782 ResourceMark rm(THREAD); 783 HandleMark hm(THREAD); 784 785 // Load and initialize the jdk.internal.agent.Agent class 786 // invoke stopRemoteManagementAgent method to stop the 787 // management server 788 // throw java.lang.NoSuchMethodError if method doesn't exist 789 790 loadAgentModule(CHECK); 791 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 792 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 793 794 JavaValue result(T_VOID); 795 JavaCalls::call_static(&result, k, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK); 796 } 797 798 JMXStatusDCmd::JMXStatusDCmd(outputStream *output, bool heap_allocated) : 799 DCmd(output, heap_allocated) { 800 // do nothing 801 } 802 803 void JMXStatusDCmd::execute(DCmdSource source, TRAPS) { 804 ResourceMark rm(THREAD); 805 HandleMark hm(THREAD); 806 807 // Load and initialize the jdk.internal.agent.Agent class 808 // invoke getManagementAgentStatus() method to generate the status info 809 // throw java.lang.NoSuchMethodError if method doesn't exist 810 811 loadAgentModule(CHECK); 812 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); 813 Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::jdk_internal_agent_Agent(), loader, Handle(), true, CHECK); 814 815 JavaValue result(T_OBJECT); 816 JavaCalls::call_static(&result, k, vmSymbols::getAgentStatus_name(), vmSymbols::void_string_signature(), CHECK); 817 818 jvalue* jv = (jvalue*) result.get_value_addr(); 819 oop str = cast_to_oop(jv->l); 820 if (str != nullptr) { 821 char* out = java_lang_String::as_utf8_string(str); 822 if (out) { 823 // Avoid using print_cr() because length maybe longer than O_BUFLEN 824 output()->print_raw_cr(out); 825 return; 826 } 827 } 828 output()->print_cr("Error obtaining management agent status"); 829 } 830 831 VMDynamicLibrariesDCmd::VMDynamicLibrariesDCmd(outputStream *output, bool heap_allocated) : 832 DCmd(output, heap_allocated) { 833 // do nothing 834 } 835 836 void VMDynamicLibrariesDCmd::execute(DCmdSource source, TRAPS) { 837 os::print_dll_info(output()); 838 output()->cr(); 839 } 840 841 void CompileQueueDCmd::execute(DCmdSource source, TRAPS) { 842 VM_PrintCompileQueue printCompileQueueOp(output()); 843 VMThread::execute(&printCompileQueueOp); 844 } 845 846 void CodeListDCmd::execute(DCmdSource source, TRAPS) { 847 CodeCache::print_codelist(output()); 848 } 849 850 void CodeCacheDCmd::execute(DCmdSource source, TRAPS) { 851 CodeCache::print_layout(output()); 852 } 853 854 #ifdef LINUX 855 PerfMapDCmd::PerfMapDCmd(outputStream* output, bool heap) : 856 DCmdWithParser(output, heap), 857 _filename("filename", "Name of the map file", "FILE", false, DEFAULT_PERFMAP_FILENAME) 858 { 859 _dcmdparser.add_dcmd_argument(&_filename); 860 } 861 862 void PerfMapDCmd::execute(DCmdSource source, TRAPS) { 863 CodeCache::write_perf_map(_filename.value(), output()); 864 } 865 #endif // LINUX 866 867 //---< BEGIN >--- CodeHeap State Analytics. 868 CodeHeapAnalyticsDCmd::CodeHeapAnalyticsDCmd(outputStream* output, bool heap) : 869 DCmdWithParser(output, heap), 870 _function("function", "Function to be performed (aggregate, UsedSpace, FreeSpace, MethodCount, MethodSpace, MethodAge, MethodNames, discard", "STRING", false, "all"), 871 _granularity("granularity", "Detail level - smaller value -> more detail", "INT", false, "4096") { 872 _dcmdparser.add_dcmd_argument(&_function); 873 _dcmdparser.add_dcmd_argument(&_granularity); 874 } 875 876 void CodeHeapAnalyticsDCmd::execute(DCmdSource source, TRAPS) { 877 jlong granularity = _granularity.value(); 878 if (granularity < 1) { 879 Exceptions::fthrow(THREAD_AND_LOCATION, vmSymbols::java_lang_IllegalArgumentException(), 880 "Invalid granularity value " JLONG_FORMAT ". Should be positive.\n", granularity); 881 return; 882 } 883 884 CompileBroker::print_heapinfo(output(), _function.value(), granularity); 885 } 886 //---< END >--- CodeHeap State Analytics. 887 888 EventLogDCmd::EventLogDCmd(outputStream* output, bool heap) : 889 DCmdWithParser(output, heap), 890 _log("log", "Name of log to be printed. If omitted, all logs are printed.", "STRING", false, nullptr), 891 _max("max", "Maximum number of events to be printed (newest first). If omitted, all events are printed.", "STRING", false, nullptr) 892 { 893 _dcmdparser.add_dcmd_option(&_log); 894 _dcmdparser.add_dcmd_option(&_max); 895 } 896 897 void EventLogDCmd::execute(DCmdSource source, TRAPS) { 898 const char* max_value = _max.value(); 899 int max = -1; 900 if (max_value != nullptr) { 901 char* endptr = nullptr; 902 if (!parse_integer(max_value, &max)) { 903 output()->print_cr("Invalid max option: \"%s\".", max_value); 904 return; 905 } 906 } 907 const char* log_name = _log.value(); 908 if (log_name != nullptr) { 909 Events::print_one(output(), log_name, max); 910 } else { 911 Events::print_all(output(), max); 912 } 913 } 914 915 void CompilerDirectivesPrintDCmd::execute(DCmdSource source, TRAPS) { 916 DirectivesStack::print(output()); 917 } 918 919 CompilerDirectivesAddDCmd::CompilerDirectivesAddDCmd(outputStream* output, bool heap) : 920 DCmdWithParser(output, heap), 921 _filename("filename","Name of the directives file", "STRING",true) { 922 _dcmdparser.add_dcmd_argument(&_filename); 923 } 924 925 void CompilerDirectivesAddDCmd::execute(DCmdSource source, TRAPS) { 926 DirectivesParser::parse_from_file(_filename.value(), output(), true); 927 } 928 929 void CompilerDirectivesRemoveDCmd::execute(DCmdSource source, TRAPS) { 930 DirectivesStack::pop(1); 931 } 932 933 void CompilerDirectivesClearDCmd::execute(DCmdSource source, TRAPS) { 934 DirectivesStack::clear(); 935 } 936 #if INCLUDE_SERVICES 937 ClassHierarchyDCmd::ClassHierarchyDCmd(outputStream* output, bool heap) : 938 DCmdWithParser(output, heap), 939 _print_interfaces("-i", "Inherited interfaces should be printed.", "BOOLEAN", false, "false"), 940 _print_subclasses("-s", "If a classname is specified, print its subclasses " 941 "in addition to its superclasses. Without this option only the " 942 "superclasses will be printed.", "BOOLEAN", false, "false"), 943 _classname("classname", "Name of class whose hierarchy should be printed. " 944 "If not specified, all class hierarchies are printed.", 945 "STRING", false) { 946 _dcmdparser.add_dcmd_option(&_print_interfaces); 947 _dcmdparser.add_dcmd_option(&_print_subclasses); 948 _dcmdparser.add_dcmd_argument(&_classname); 949 } 950 951 void ClassHierarchyDCmd::execute(DCmdSource source, TRAPS) { 952 VM_PrintClassHierarchy printClassHierarchyOp(output(), _print_interfaces.value(), 953 _print_subclasses.value(), _classname.value()); 954 VMThread::execute(&printClassHierarchyOp); 955 } 956 #endif 957 958 ClassesDCmd::ClassesDCmd(outputStream* output, bool heap) : 959 DCmdWithParser(output, heap), 960 _verbose("-verbose", 961 "Dump the detailed content of a Java class. " 962 "Some classes are annotated with flags: " 963 "F = has, or inherits, a non-empty finalize method, " 964 "f = has final method, " 965 "W = methods rewritten, " 966 "C = marked with @Contended annotation, " 967 "R = has been redefined, " 968 "S = is shared class", 969 "BOOLEAN", false, "false") { 970 _dcmdparser.add_dcmd_option(&_verbose); 971 } 972 973 class VM_PrintClasses : public VM_Operation { 974 private: 975 outputStream* _out; 976 bool _verbose; 977 public: 978 VM_PrintClasses(outputStream* out, bool verbose) : _out(out), _verbose(verbose) {} 979 980 virtual VMOp_Type type() const { return VMOp_PrintClasses; } 981 982 virtual void doit() { 983 PrintClassClosure closure(_out, _verbose); 984 ClassLoaderDataGraph::classes_do(&closure); 985 } 986 }; 987 988 void ClassesDCmd::execute(DCmdSource source, TRAPS) { 989 VM_PrintClasses vmop(output(), _verbose.value()); 990 VMThread::execute(&vmop); 991 } 992 993 #if INCLUDE_CDS 994 void AOTEndTrainingDCmd::execute(DCmdSource source, TRAPS) { 995 if (!CDSConfig::is_dumping_preimage_static_archive()) { 996 output()->print_cr("Error! Not a training run"); 997 } else if (CDSEndTrainingUpcall::end_training(THREAD)) { 998 output()->print_cr("Training ended successfully"); 999 } else { 1000 output()->print_cr("Error! Failed to end training"); 1001 } 1002 } 1003 #endif // INCLUDE_CDS 1004 1005 #if INCLUDE_CDS 1006 #define DEFAULT_CDS_ARCHIVE_FILENAME "java_pid%p_<subcmd>.jsa" 1007 1008 DumpSharedArchiveDCmd::DumpSharedArchiveDCmd(outputStream* output, bool heap) : 1009 DCmdWithParser(output, heap), 1010 _suboption("subcmd", "static_dump | dynamic_dump", "STRING", true), 1011 _filename("filename", "Name of shared archive to be dumped", "FILE", false, 1012 DEFAULT_CDS_ARCHIVE_FILENAME) 1013 { 1014 _dcmdparser.add_dcmd_argument(&_suboption); 1015 _dcmdparser.add_dcmd_argument(&_filename); 1016 } 1017 1018 void DumpSharedArchiveDCmd::execute(DCmdSource source, TRAPS) { 1019 jboolean is_static; 1020 const char* scmd = _suboption.value(); 1021 1022 // The check for _filename.is_set() is because we don't want to use 1023 // DEFAULT_CDS_ARCHIVE_FILENAME, since it is meant as a description 1024 // of the default, not the actual default. 1025 const char* file = _filename.is_set() ? _filename.value() : nullptr; 1026 1027 if (strcmp(scmd, "static_dump") == 0) { 1028 is_static = JNI_TRUE; 1029 output()->print("Static dump: "); 1030 } else if (strcmp(scmd, "dynamic_dump") == 0) { 1031 is_static = JNI_FALSE; 1032 output()->print("Dynamic dump: "); 1033 if (!CDSConfig::is_using_archive()) { 1034 output()->print_cr("Dynamic dump is unsupported when base CDS archive is not loaded"); 1035 return; 1036 } 1037 if (!RecordDynamicDumpInfo) { 1038 output()->print_cr("Dump dynamic should run with -XX:+RecordDynamicDumpInfo"); 1039 return; 1040 } 1041 } else { 1042 output()->print_cr("Invalid command for VM.cds, valid input is static_dump or dynamic_dump"); 1043 return; 1044 } 1045 1046 // call CDS.dumpSharedArchive 1047 Handle fileh; 1048 if (file != nullptr) { 1049 fileh = java_lang_String::create_from_str(file, CHECK); 1050 } 1051 Symbol* cds_name = vmSymbols::jdk_internal_misc_CDS(); 1052 Klass* cds_klass = SystemDictionary::resolve_or_fail(cds_name, true /*throw error*/, CHECK); 1053 JavaValue result(T_OBJECT); 1054 JavaCallArguments args; 1055 args.push_int(is_static); 1056 args.push_oop(fileh); 1057 JavaCalls::call_static(&result, 1058 cds_klass, 1059 vmSymbols::dumpSharedArchive(), 1060 vmSymbols::dumpSharedArchive_signature(), 1061 &args, CHECK); 1062 if (!HAS_PENDING_EXCEPTION) { 1063 assert(result.get_type() == T_OBJECT, "Sanity check"); 1064 // result contains the archive name 1065 char* archive_name = java_lang_String::as_utf8_string(result.get_oop()); 1066 output()->print_cr("%s", archive_name); 1067 } 1068 } 1069 #endif // INCLUDE_CDS 1070 1071 ThreadDumpToFileDCmd::ThreadDumpToFileDCmd(outputStream* output, bool heap) : 1072 DCmdWithParser(output, heap), 1073 _overwrite("-overwrite", "May overwrite existing file", "BOOLEAN", false, "false"), 1074 _format("-format", "Output format (\"plain\" or \"json\")", "STRING", false, "plain"), 1075 _filepath("filepath", "The file path to the output file", "FILE", true) { 1076 _dcmdparser.add_dcmd_option(&_overwrite); 1077 _dcmdparser.add_dcmd_option(&_format); 1078 _dcmdparser.add_dcmd_argument(&_filepath); 1079 } 1080 1081 void ThreadDumpToFileDCmd::execute(DCmdSource source, TRAPS) { 1082 bool json = (_format.value() != nullptr) && (strcmp(_format.value(), "json") == 0); 1083 char* path = _filepath.value(); 1084 bool overwrite = _overwrite.value(); 1085 Symbol* name = (json) ? vmSymbols::dumpThreadsToJson_name() : vmSymbols::dumpThreads_name(); 1086 dumpToFile(name, vmSymbols::string_bool_byte_array_signature(), path, overwrite, CHECK); 1087 } 1088 1089 void ThreadDumpToFileDCmd::dumpToFile(Symbol* name, Symbol* signature, const char* path, bool overwrite, TRAPS) { 1090 ResourceMark rm(THREAD); 1091 HandleMark hm(THREAD); 1092 1093 Handle h_path = java_lang_String::create_from_str(path, CHECK); 1094 1095 Symbol* sym = vmSymbols::jdk_internal_vm_ThreadDumper(); 1096 Klass* k = SystemDictionary::resolve_or_fail(sym, true, CHECK); 1097 InstanceKlass* ik = InstanceKlass::cast(k); 1098 if (HAS_PENDING_EXCEPTION) { 1099 java_lang_Throwable::print(PENDING_EXCEPTION, output()); 1100 output()->cr(); 1101 CLEAR_PENDING_EXCEPTION; 1102 return; 1103 } 1104 1105 // invoke the ThreadDump method to dump to file 1106 JavaValue result(T_OBJECT); 1107 JavaCallArguments args; 1108 args.push_oop(h_path); 1109 args.push_int(overwrite ? JNI_TRUE : JNI_FALSE); 1110 JavaCalls::call_static(&result, 1111 k, 1112 name, 1113 signature, 1114 &args, 1115 THREAD); 1116 if (HAS_PENDING_EXCEPTION) { 1117 java_lang_Throwable::print(PENDING_EXCEPTION, output()); 1118 output()->cr(); 1119 CLEAR_PENDING_EXCEPTION; 1120 return; 1121 } 1122 1123 // check that result is byte array 1124 oop res = cast_to_oop(result.get_jobject()); 1125 assert(res->is_typeArray(), "just checking"); 1126 assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking"); 1127 1128 // copy the bytes to the output stream 1129 typeArrayOop ba = typeArrayOop(res); 1130 jbyte* addr = typeArrayOop(res)->byte_at_addr(0); 1131 output()->print_raw((const char*)addr, ba->length()); 1132 } 1133 1134 CompilationMemoryStatisticDCmd::CompilationMemoryStatisticDCmd(outputStream* output, bool heap) : 1135 DCmdWithParser(output, heap), 1136 _human_readable("-H", "Human readable format", "BOOLEAN", false, "false"), 1137 _minsize("-s", "Minimum memory size", "MEMORY SIZE", false, "0") { 1138 _dcmdparser.add_dcmd_option(&_human_readable); 1139 _dcmdparser.add_dcmd_option(&_minsize); 1140 } 1141 1142 void CompilationMemoryStatisticDCmd::execute(DCmdSource source, TRAPS) { 1143 const bool human_readable = _human_readable.value(); 1144 const size_t minsize = _minsize.has_value() ? _minsize.value()._size : 0; 1145 CompilationMemoryStatistic::print_all_by_size(output(), human_readable, minsize); 1146 } 1147 1148 #if defined(LINUX) || defined(_WIN64) 1149 1150 SystemMapDCmd::SystemMapDCmd(outputStream* output, bool heap) : DCmd(output, heap) {} 1151 1152 void SystemMapDCmd::execute(DCmdSource source, TRAPS) { 1153 MemMapPrinter::print_all_mappings(output()); 1154 } 1155 1156 static constexpr char default_filename[] = "vm_memory_map_%p.txt"; 1157 1158 SystemDumpMapDCmd::SystemDumpMapDCmd(outputStream* output, bool heap) : 1159 DCmdWithParser(output, heap), 1160 _filename("-F", "file path", "FILE", false, default_filename) { 1161 _dcmdparser.add_dcmd_option(&_filename); 1162 } 1163 1164 void SystemDumpMapDCmd::execute(DCmdSource source, TRAPS) { 1165 const char* name = _filename.value(); 1166 if (name == nullptr || name[0] == 0) { 1167 output()->print_cr("filename is empty or not specified. No file written"); 1168 return; 1169 } 1170 fileStream fs(name); 1171 if (fs.is_open()) { 1172 if (!MemTracker::enabled()) { 1173 output()->print_cr("(NMT is disabled, will not annotate mappings)."); 1174 } 1175 MemMapPrinter::print_all_mappings(&fs); 1176 // For the readers convenience, resolve path name. 1177 char tmp[JVM_MAXPATHLEN]; 1178 const char* absname = os::realpath(name, tmp, sizeof(tmp)); 1179 name = absname != nullptr ? absname : name; 1180 output()->print_cr("Memory map dumped to \"%s\".", name); 1181 } else { 1182 output()->print_cr("Failed to open \"%s\" for writing (%s).", name, os::strerror(errno)); 1183 } 1184 } 1185 1186 #endif // LINUX