1 /*
   2  * Copyright (c) 2011, 2014, 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 "gc_implementation/shared/vmGCOperations.hpp"
  27 #include "runtime/javaCalls.hpp"
  28 #include "services/diagnosticArgument.hpp"
  29 #include "services/diagnosticCommand.hpp"
  30 #include "services/diagnosticFramework.hpp"
  31 #include "services/heapDumper.hpp"
  32 #include "services/management.hpp"
  33 #include "utilities/macros.hpp"
  34 
  35 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
  36 
  37 void DCmdRegistrant::register_dcmds(){
  38   // Registration of the diagnostic commands
  39   // First argument specifies which interfaces will export the command
  40   // Second argument specifies if the command is enabled
  41   // Third  argument specifies if the command is hidden
  42   uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI
  43                          | DCmd_Source_MBean;
  44   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(full_export, true, false));
  45   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(full_export, true, false));
  46   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(full_export, true, false));
  47   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(full_export, true, false));
  48   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(full_export, true, false));
  49   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(full_export, true, false));
  50   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(full_export, true, false));
  51   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(full_export, true, false));
  52 #if INCLUDE_SERVICES // Heap dumping/inspection supported
  53   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(DCmd_Source_Internal | DCmd_Source_AttachAPI, true, false));
  54   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(full_export, true, false));
  55   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(full_export, true, false));
  56 #endif // INCLUDE_SERVICES
  57   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(full_export, true, false));
  58   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RotateGCLogDCmd>(full_export, true, false));
  59 
  60   // Enhanced JMX Agent Support
  61   // These commands won't be exported via the DiagnosticCommandMBean until an
  62   // appropriate permission is created for them
  63   uint32_t jmx_agent_export_flags = DCmd_Source_Internal | DCmd_Source_AttachAPI;
  64   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(jmx_agent_export_flags, true,false));
  65   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(jmx_agent_export_flags, true,false));
  66   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(jmx_agent_export_flags, true,false));
  67 
  68 }
  69 
  70 #ifndef HAVE_EXTRA_DCMD
  71 void DCmdRegistrant::register_dcmds_ext(){
  72    // Do nothing here
  73 }
  74 #endif
  75 
  76 
  77 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
  78   _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
  79   _cmd("command name", "The name of the command for which we want help",
  80         "STRING", false) {
  81   _dcmdparser.add_dcmd_option(&_all);
  82   _dcmdparser.add_dcmd_argument(&_cmd);
  83 };
  84 
  85 void HelpDCmd::execute(DCmdSource source, TRAPS) {
  86   if (_all.value()) {
  87     GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list(source);
  88     for (int i = 0; i < cmd_list->length(); i++) {
  89       DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
  90                                                   strlen(cmd_list->at(i)));
  91       output()->print_cr("%s%s", factory->name(),
  92                          factory->is_enabled() ? "" : " [disabled]");
  93       output()->print_cr("\t%s", factory->description());
  94       output()->cr();
  95       factory = factory->next();
  96     }
  97   } else if (_cmd.has_value()) {
  98     DCmd* cmd = NULL;
  99     DCmdFactory* factory = DCmdFactory::factory(source, _cmd.value(),
 100                                                 strlen(_cmd.value()));
 101     if (factory != NULL) {
 102       output()->print_cr("%s%s", factory->name(),
 103                          factory->is_enabled() ? "" : " [disabled]");
 104       output()->print_cr("%s", factory->description());
 105       output()->print_cr("\nImpact: %s", factory->impact());
 106       JavaPermission p = factory->permission();
 107       if(p._class != NULL) {
 108         if(p._action != NULL) {
 109           output()->print_cr("\nPermission: %s(%s, %s)",
 110                   p._class, p._name == NULL ? "null" : p._name, p._action);
 111         } else {
 112           output()->print_cr("\nPermission: %s(%s)",
 113                   p._class, p._name == NULL ? "null" : p._name);
 114         }
 115       }
 116       output()->cr();
 117       cmd = factory->create_resource_instance(output());
 118       if (cmd != NULL) {
 119         DCmdMark mark(cmd);
 120         cmd->print_help(factory->name());
 121       }
 122     } else {
 123       output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value());
 124     }
 125   } else {
 126     output()->print_cr("The following commands are available:");
 127     GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list(source);
 128     for (int i = 0; i < cmd_list->length(); i++) {
 129       DCmdFactory* factory = DCmdFactory::factory(source, cmd_list->at(i),
 130                                                   strlen(cmd_list->at(i)));
 131       output()->print_cr("%s%s", factory->name(),
 132                          factory->is_enabled() ? "" : " [disabled]");
 133       factory = factory->_next;
 134     }
 135     output()->print_cr("\nFor more information about a specific command use 'help <command>'.");
 136   }
 137 }
 138 
 139 int HelpDCmd::num_arguments() {
 140   ResourceMark rm;
 141   HelpDCmd* dcmd = new HelpDCmd(NULL, false);
 142   if (dcmd != NULL) {
 143     DCmdMark mark(dcmd);
 144     return dcmd->_dcmdparser.num_arguments();
 145   } else {
 146     return 0;
 147   }
 148 }
 149 
 150 void VersionDCmd::execute(DCmdSource source, TRAPS) {
 151   output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(),
 152           Abstract_VM_Version::vm_release());
 153   JDK_Version jdk_version = JDK_Version::current();
 154   if (jdk_version.update_version() > 0) {
 155     output()->print_cr("JDK %d.%d_%02d", jdk_version.major_version(),
 156             jdk_version.minor_version(), jdk_version.update_version());
 157   } else {
 158     output()->print_cr("JDK %d.%d", jdk_version.major_version(),
 159             jdk_version.minor_version());
 160   }
 161 }
 162 
 163 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) :
 164                                    DCmdWithParser(output, heap),
 165   _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") {
 166   _dcmdparser.add_dcmd_option(&_all);
 167 }
 168 
 169 void PrintVMFlagsDCmd::execute(DCmdSource source, TRAPS) {
 170   if (_all.value()) {
 171     CommandLineFlags::printFlags(output(), true);
 172   } else {
 173     CommandLineFlags::printSetFlags(output());
 174   }
 175 }
 176 
 177 int PrintVMFlagsDCmd::num_arguments() {
 178     ResourceMark rm;
 179     PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false);
 180     if (dcmd != NULL) {
 181       DCmdMark mark(dcmd);
 182       return dcmd->_dcmdparser.num_arguments();
 183     } else {
 184       return 0;
 185     }
 186 }
 187 
 188 void PrintSystemPropertiesDCmd::execute(DCmdSource source, TRAPS) {
 189   // load sun.misc.VMSupport
 190   Symbol* klass = vmSymbols::sun_misc_VMSupport();
 191   Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
 192   instanceKlassHandle ik (THREAD, k);
 193   if (ik->should_be_initialized()) {
 194     ik->initialize(THREAD);
 195   }
 196   if (HAS_PENDING_EXCEPTION) {
 197     java_lang_Throwable::print(PENDING_EXCEPTION, output());
 198     output()->cr();
 199     CLEAR_PENDING_EXCEPTION;
 200     return;
 201   }
 202 
 203   // invoke the serializePropertiesToByteArray method
 204   JavaValue result(T_OBJECT);
 205   JavaCallArguments args;
 206 
 207   Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature();
 208   JavaCalls::call_static(&result,
 209                          ik,
 210                          vmSymbols::serializePropertiesToByteArray_name(),
 211                          signature,
 212                          &args,
 213                          THREAD);
 214   if (HAS_PENDING_EXCEPTION) {
 215     java_lang_Throwable::print(PENDING_EXCEPTION, output());
 216     output()->cr();
 217     CLEAR_PENDING_EXCEPTION;
 218     return;
 219   }
 220 
 221   // The result should be a [B
 222   oop res = (oop)result.get_jobject();
 223   assert(res->is_typeArray(), "just checking");
 224   assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking");
 225 
 226   // copy the bytes to the output stream
 227   typeArrayOop ba = typeArrayOop(res);
 228   jbyte* addr = typeArrayOop(res)->byte_at_addr(0);
 229   output()->print_raw((const char*)addr, ba->length());
 230 }
 231 
 232 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) :
 233                            DCmdWithParser(output, heap),
 234   _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") {
 235   _dcmdparser.add_dcmd_option(&_date);
 236 }
 237 
 238 void VMUptimeDCmd::execute(DCmdSource source, TRAPS) {
 239   if (_date.value()) {
 240     output()->date_stamp(true, "", ": ");
 241   }
 242   output()->time_stamp().update_to(tty->time_stamp().ticks());
 243   output()->stamp();
 244   output()->print_cr(" s");
 245 }
 246 
 247 int VMUptimeDCmd::num_arguments() {
 248   ResourceMark rm;
 249   VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false);
 250   if (dcmd != NULL) {
 251     DCmdMark mark(dcmd);
 252     return dcmd->_dcmdparser.num_arguments();
 253   } else {
 254     return 0;
 255   }
 256 }
 257 
 258 void SystemGCDCmd::execute(DCmdSource source, TRAPS) {
 259   if (!DisableExplicitGC) {
 260     Universe::heap()->collect(GCCause::_java_lang_system_gc);
 261   } else {
 262     output()->print_cr("Explicit GC is disabled, no GC has been performed.");
 263   }
 264 }
 265 
 266 void RunFinalizationDCmd::execute(DCmdSource source, TRAPS) {
 267   Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
 268                                                  true, CHECK);
 269   instanceKlassHandle klass(THREAD, k);
 270   JavaValue result(T_VOID);
 271   JavaCalls::call_static(&result, klass,
 272                          vmSymbols::run_finalization_name(),
 273                          vmSymbols::void_method_signature(), CHECK);
 274 }
 275 
 276 #if INCLUDE_SERVICES // Heap dumping/inspection supported
 277 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
 278                            DCmdWithParser(output, heap),
 279   _filename("filename","Name of the dump file", "STRING",true),
 280   _all("-all", "Dump all objects, including unreachable objects",
 281        "BOOLEAN", false, "false") {
 282   _dcmdparser.add_dcmd_option(&_all);
 283   _dcmdparser.add_dcmd_argument(&_filename);
 284 }
 285 
 286 void HeapDumpDCmd::execute(DCmdSource source, TRAPS) {
 287   // Request a full GC before heap dump if _all is false
 288   // This helps reduces the amount of unreachable objects in the dump
 289   // and makes it easier to browse.
 290   HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
 291   int res = dumper.dump(_filename.value());
 292   if (res == 0) {
 293     output()->print_cr("Heap dump file created");
 294   } else {
 295     // heap dump failed
 296     ResourceMark rm;
 297     char* error = dumper.error_as_C_string();
 298     if (error == NULL) {
 299       output()->print_cr("Dump failed - reason unknown");
 300     } else {
 301       output()->print_cr("%s", error);
 302     }
 303   }
 304 }
 305 
 306 int HeapDumpDCmd::num_arguments() {
 307   ResourceMark rm;
 308   HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
 309   if (dcmd != NULL) {
 310     DCmdMark mark(dcmd);
 311     return dcmd->_dcmdparser.num_arguments();
 312   } else {
 313     return 0;
 314   }
 315 }
 316 
 317 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
 318                                        DCmdWithParser(output, heap),
 319   _all("-all", "Inspect all objects, including unreachable objects",
 320        "BOOLEAN", false, "false") {
 321   _dcmdparser.add_dcmd_option(&_all);
 322 }
 323 
 324 void ClassHistogramDCmd::execute(DCmdSource source, TRAPS) {
 325   VM_GC_HeapInspection heapop(output(),
 326                               !_all.value() /* request full gc if false */);
 327   VMThread::execute(&heapop);
 328 }
 329 
 330 int ClassHistogramDCmd::num_arguments() {
 331   ResourceMark rm;
 332   ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
 333   if (dcmd != NULL) {
 334     DCmdMark mark(dcmd);
 335     return dcmd->_dcmdparser.num_arguments();
 336   } else {
 337     return 0;
 338   }
 339 }
 340 
 341 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total"
 342 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) :
 343                                        DCmdWithParser(output, heap),
 344   _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets",
 345        "BOOLEAN", false, "false"),
 346   _all("-all", "Show all columns",
 347        "BOOLEAN", false, "false"),
 348   _help("-help", "Show meaning of all the columns",
 349        "BOOLEAN", false, "false"),
 350   _columns("columns", "Comma-separated list of all the columns to show. "
 351            "If not specified, the following columns are shown: " DEFAULT_COLUMNS,
 352            "STRING", false) {
 353   _dcmdparser.add_dcmd_option(&_all);
 354   _dcmdparser.add_dcmd_option(&_csv);
 355   _dcmdparser.add_dcmd_option(&_help);
 356   _dcmdparser.add_dcmd_argument(&_columns);
 357 }
 358 
 359 void ClassStatsDCmd::execute(DCmdSource source, TRAPS) {
 360   if (!UnlockDiagnosticVMOptions) {
 361     output()->print_cr("GC.class_stats command requires -XX:+UnlockDiagnosticVMOptions");
 362     return;
 363   }
 364 
 365   VM_GC_HeapInspection heapop(output(),
 366                               true /* request_full_gc */);
 367   heapop.set_csv_format(_csv.value());
 368   heapop.set_print_help(_help.value());
 369   heapop.set_print_class_stats(true);
 370   if (_all.value()) {
 371     if (_columns.has_value()) {
 372       output()->print_cr("Cannot specify -all and individual columns at the same time");
 373       return;
 374     } else {
 375       heapop.set_columns(NULL);
 376     }
 377   } else {
 378     if (_columns.has_value()) {
 379       heapop.set_columns(_columns.value());
 380     } else {
 381       heapop.set_columns(DEFAULT_COLUMNS);
 382     }
 383   }
 384   VMThread::execute(&heapop);
 385 }
 386 
 387 int ClassStatsDCmd::num_arguments() {
 388   ResourceMark rm;
 389   ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false);
 390   if (dcmd != NULL) {
 391     DCmdMark mark(dcmd);
 392     return dcmd->_dcmdparser.num_arguments();
 393   } else {
 394     return 0;
 395   }
 396 }
 397 #endif // INCLUDE_SERVICES
 398 
 399 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
 400                                DCmdWithParser(output, heap),
 401   _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false") {
 402   _dcmdparser.add_dcmd_option(&_locks);
 403 }
 404 
 405 void ThreadDumpDCmd::execute(DCmdSource source, TRAPS) {
 406   // thread stacks
 407   VM_PrintThreads op1(output(), _locks.value());
 408   VMThread::execute(&op1);
 409 
 410   // JNI global handles
 411   VM_PrintJNI op2(output());
 412   VMThread::execute(&op2);
 413 
 414   // Deadlock detection
 415   VM_FindDeadlocks op3(output());
 416   VMThread::execute(&op3);
 417 }
 418 
 419 int ThreadDumpDCmd::num_arguments() {
 420   ResourceMark rm;
 421   ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false);
 422   if (dcmd != NULL) {
 423     DCmdMark mark(dcmd);
 424     return dcmd->_dcmdparser.num_arguments();
 425   } else {
 426     return 0;
 427   }
 428 }
 429 
 430 // Enhanced JMX Agent support
 431 
 432 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) :
 433 
 434   DCmdWithParser(output, heap_allocated),
 435 
 436   _config_file
 437   ("config.file",
 438    "set com.sun.management.config.file", "STRING", false),
 439 
 440   _jmxremote_port
 441   ("jmxremote.port",
 442    "set com.sun.management.jmxremote.port", "STRING", false),
 443 
 444   _jmxremote_rmi_port
 445   ("jmxremote.rmi.port",
 446    "set com.sun.management.jmxremote.rmi.port", "STRING", false),
 447 
 448   _jmxremote_ssl
 449   ("jmxremote.ssl",
 450    "set com.sun.management.jmxremote.ssl", "STRING", false),
 451 
 452   _jmxremote_registry_ssl
 453   ("jmxremote.registry.ssl",
 454    "set com.sun.management.jmxremote.registry.ssl", "STRING", false),
 455 
 456   _jmxremote_authenticate
 457   ("jmxremote.authenticate",
 458    "set com.sun.management.jmxremote.authenticate", "STRING", false),
 459 
 460   _jmxremote_password_file
 461   ("jmxremote.password.file",
 462    "set com.sun.management.jmxremote.password.file", "STRING", false),
 463 
 464   _jmxremote_access_file
 465   ("jmxremote.access.file",
 466    "set com.sun.management.jmxremote.access.file", "STRING", false),
 467 
 468   _jmxremote_login_config
 469   ("jmxremote.login.config",
 470    "set com.sun.management.jmxremote.login.config", "STRING", false),
 471 
 472   _jmxremote_ssl_enabled_cipher_suites
 473   ("jmxremote.ssl.enabled.cipher.suites",
 474    "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false),
 475 
 476   _jmxremote_ssl_enabled_protocols
 477   ("jmxremote.ssl.enabled.protocols",
 478    "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false),
 479 
 480   _jmxremote_ssl_need_client_auth
 481   ("jmxremote.ssl.need.client.auth",
 482    "set com.sun.management.jmxremote.need.client.auth", "STRING", false),
 483 
 484   _jmxremote_ssl_config_file
 485   ("jmxremote.ssl.config.file",
 486    "set com.sun.management.jmxremote.ssl_config_file", "STRING", false),
 487 
 488 // JDP Protocol support
 489   _jmxremote_autodiscovery
 490   ("jmxremote.autodiscovery",
 491    "set com.sun.management.jmxremote.autodiscovery", "STRING", false),
 492 
 493    _jdp_port
 494   ("jdp.port",
 495    "set com.sun.management.jdp.port", "INT", false),
 496 
 497    _jdp_address
 498   ("jdp.address",
 499    "set com.sun.management.jdp.address", "STRING", false),
 500 
 501    _jdp_source_addr
 502   ("jdp.source_addr",
 503    "set com.sun.management.jdp.source_addr", "STRING", false),
 504 
 505    _jdp_ttl
 506   ("jdp.ttl",
 507    "set com.sun.management.jdp.ttl", "INT", false),
 508 
 509    _jdp_pause
 510   ("jdp.pause",
 511    "set com.sun.management.jdp.pause", "INT", false),
 512 
 513    _jdp_name
 514   ("jdp.name",
 515    "set com.sun.management.jdp.name", "STRING", false)
 516 
 517   {
 518     _dcmdparser.add_dcmd_option(&_config_file);
 519     _dcmdparser.add_dcmd_option(&_jmxremote_port);
 520     _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port);
 521     _dcmdparser.add_dcmd_option(&_jmxremote_ssl);
 522     _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl);
 523     _dcmdparser.add_dcmd_option(&_jmxremote_authenticate);
 524     _dcmdparser.add_dcmd_option(&_jmxremote_password_file);
 525     _dcmdparser.add_dcmd_option(&_jmxremote_access_file);
 526     _dcmdparser.add_dcmd_option(&_jmxremote_login_config);
 527     _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites);
 528     _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols);
 529     _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth);
 530     _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file);
 531     _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery);
 532     _dcmdparser.add_dcmd_option(&_jdp_port);
 533     _dcmdparser.add_dcmd_option(&_jdp_address);
 534     _dcmdparser.add_dcmd_option(&_jdp_source_addr);
 535     _dcmdparser.add_dcmd_option(&_jdp_ttl);
 536     _dcmdparser.add_dcmd_option(&_jdp_pause);
 537     _dcmdparser.add_dcmd_option(&_jdp_name);
 538 }
 539 
 540 
 541 int JMXStartRemoteDCmd::num_arguments() {
 542   ResourceMark rm;
 543   JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false);
 544   if (dcmd != NULL) {
 545     DCmdMark mark(dcmd);
 546     return dcmd->_dcmdparser.num_arguments();
 547   } else {
 548     return 0;
 549   }
 550 }
 551 
 552 
 553 void JMXStartRemoteDCmd::execute(DCmdSource source, TRAPS) {
 554     ResourceMark rm(THREAD);
 555     HandleMark hm(THREAD);
 556 
 557     // Load and initialize the sun.management.Agent class
 558     // invoke startRemoteManagementAgent(string) method to start
 559     // the remote management server.
 560     // throw java.lang.NoSuchMethodError if the method doesn't exist
 561 
 562     Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
 563     Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), loader, Handle(), true, CHECK);
 564     instanceKlassHandle ik (THREAD, k);
 565 
 566     JavaValue result(T_VOID);
 567 
 568     // Pass all command line arguments to java as key=value,...
 569     // All checks are done on java side
 570 
 571     int len = 0;
 572     stringStream options;
 573     char comma[2] = {0,0};
 574 
 575     // Leave default values on Agent.class side and pass only
 576     // agruments explicitly set by user. All arguments passed
 577     // to jcmd override properties with the same name set by
 578     // command line with -D or by managmenent.properties
 579     // file.
 580 #define PUT_OPTION(a) \
 581     if ( (a).is_set() ){ \
 582         options.print(\
 583                ( *((a).type()) == 'I' ) ? "%scom.sun.management.%s=%d" : "%scom.sun.management.%s=%s",\
 584                 comma, (a).name(), (a).value()); \
 585         comma[0] = ','; \
 586     }
 587 
 588     PUT_OPTION(_config_file);
 589     PUT_OPTION(_jmxremote_port);
 590     PUT_OPTION(_jmxremote_rmi_port);
 591     PUT_OPTION(_jmxremote_ssl);
 592     PUT_OPTION(_jmxremote_registry_ssl);
 593     PUT_OPTION(_jmxremote_authenticate);
 594     PUT_OPTION(_jmxremote_password_file);
 595     PUT_OPTION(_jmxremote_access_file);
 596     PUT_OPTION(_jmxremote_login_config);
 597     PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites);
 598     PUT_OPTION(_jmxremote_ssl_enabled_protocols);
 599     PUT_OPTION(_jmxremote_ssl_need_client_auth);
 600     PUT_OPTION(_jmxremote_ssl_config_file);
 601     PUT_OPTION(_jmxremote_autodiscovery);
 602     PUT_OPTION(_jdp_port);
 603     PUT_OPTION(_jdp_address);
 604     PUT_OPTION(_jdp_source_addr);
 605     PUT_OPTION(_jdp_ttl);
 606     PUT_OPTION(_jdp_pause);
 607     PUT_OPTION(_jdp_name);
 608 
 609 #undef PUT_OPTION
 610 
 611     Handle str = java_lang_String::create_from_str(options.as_string(), CHECK);
 612     JavaCalls::call_static(&result, ik, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK);
 613 }
 614 
 615 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) :
 616   DCmd(output, heap_allocated)
 617 {
 618   // do nothing
 619 }
 620 
 621 void JMXStartLocalDCmd::execute(DCmdSource source, TRAPS) {
 622     ResourceMark rm(THREAD);
 623     HandleMark hm(THREAD);
 624 
 625     // Load and initialize the sun.management.Agent class
 626     // invoke startLocalManagementAgent(void) method to start
 627     // the local management server
 628     // throw java.lang.NoSuchMethodError if method doesn't exist
 629 
 630     Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
 631     Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), loader, Handle(), true, CHECK);
 632     instanceKlassHandle ik (THREAD, k);
 633 
 634     JavaValue result(T_VOID);
 635     JavaCalls::call_static(&result, ik, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK);
 636 }
 637 
 638 
 639 void JMXStopRemoteDCmd::execute(DCmdSource source, TRAPS) {
 640     ResourceMark rm(THREAD);
 641     HandleMark hm(THREAD);
 642 
 643     // Load and initialize the sun.management.Agent class
 644     // invoke stopRemoteManagementAgent method to stop the
 645     // management server
 646     // throw java.lang.NoSuchMethodError if method doesn't exist
 647 
 648     Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
 649     Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), loader, Handle(), true, CHECK);
 650     instanceKlassHandle ik (THREAD, k);
 651 
 652     JavaValue result(T_VOID);
 653     JavaCalls::call_static(&result, ik, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK);
 654 }
 655 
 656 void RotateGCLogDCmd::execute(DCmdSource source, TRAPS) {
 657   if (UseGCLogFileRotation) {
 658     VM_RotateGCLog rotateop(output());
 659     VMThread::execute(&rotateop);
 660   } else {
 661     output()->print_cr("Target VM does not support GC log file rotation.");
 662   }
 663 }