jdk8-mips64-public/hotspot: src/share/vm/services/diagnosticCommand.cpp@35f8765422b9 (annotated)

src/share/vm/services/diagnosticCommand.cpp@35f8765422b9 (annotated)

src/share/vm/services/diagnosticCommand.cpp

Wed, 10 Apr 2013 08:55:50 -0400

author: zgu
date: Wed, 10 Apr 2013 08:55:50 -0400
changeset 4927: 35f8765422b9
parent 4544: 3c9bc17b9403
child 5047: 31a4e55f8c9d
permissions: -rw-r--r--

8010151: nsk/regression/b6653214 fails "assert(snapshot != NULL) failed: Worker should not be started"
Summary: Fixed a racing condition when shutting down NMT while worker thread is being started, also fixed a few mis-declared volatile pointers.
Reviewed-by: dholmes, dlong

 /*
  * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "gc_implementation/shared/vmGCOperations.hpp"
 #include "runtime/javaCalls.hpp"
 #include "services/diagnosticArgument.hpp"
 #include "services/diagnosticCommand.hpp"
 #include "services/diagnosticFramework.hpp"
 #include "services/heapDumper.hpp"
 #include "services/management.hpp"
 #include "utilities/macros.hpp"
 void DCmdRegistrant::register_dcmds(){
   // Registration of the diagnostic commands
   // First boolean argument specifies if the command is enabled
   // Second boolean argument specifies if the command is hidden
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HelpDCmd>(true, false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VersionDCmd>(true, false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<CommandLineDCmd>(true, false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintSystemPropertiesDCmd>(true, false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<PrintVMFlagsDCmd>(true, false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<VMUptimeDCmd>(true, false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<SystemGCDCmd>(true, false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<RunFinalizationDCmd>(true, false));
 #if INCLUDE_SERVICES // Heap dumping/inspection supported
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<HeapDumpDCmd>(true, false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassHistogramDCmd>(true, false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ClassStatsDCmd>(true, false));
 #endif // INCLUDE_SERVICES
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<ThreadDumpDCmd>(true, false));
   //Enhanced JMX Agent Support
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartRemoteDCmd>(true,false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStartLocalDCmd>(true,false));
   DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JMXStopRemoteDCmd>(true,false));
 }
 #ifndef HAVE_EXTRA_DCMD
 void DCmdRegistrant::register_dcmds_ext(){
    // Do nothing here
 }
 #endif
 HelpDCmd::HelpDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
   _all("-all", "Show help for all commands", "BOOLEAN", false, "false"),
   _cmd("command name", "The name of the command for which we want help",
         "STRING", false) {
   _dcmdparser.add_dcmd_option(&_all);
   _dcmdparser.add_dcmd_argument(&_cmd);
 };
 void HelpDCmd::execute(TRAPS) {
   if (_all.value()) {
     GrowableArray<const char*>* cmd_list = DCmdFactory::DCmd_list();
     for (int i = 0; i < cmd_list->length(); i++) {
       DCmdFactory* factory = DCmdFactory::factory(cmd_list->at(i),
                                                   strlen(cmd_list->at(i)));
       if (!factory->is_hidden()) {
         output()->print_cr("%s%s", factory->name(),
                            factory->is_enabled() ? "" : " [disabled]");
         output()->print_cr("\t%s", factory->description());
         output()->cr();
       }
       factory = factory->next();
     }
   } else if (_cmd.has_value()) {
     DCmd* cmd = NULL;
     DCmdFactory* factory = DCmdFactory::factory(_cmd.value(),
                                                 strlen(_cmd.value()));
     if (factory != NULL) {
       output()->print_cr("%s%s", factory->name(),
                          factory->is_enabled() ? "" : " [disabled]");
       output()->print_cr(factory->description());
       output()->print_cr("\nImpact: %s", factory->impact());
       output()->cr();
       cmd = factory->create_resource_instance(output());
       if (cmd != NULL) {
         DCmdMark mark(cmd);
         cmd->print_help(factory->name());
       }
     } else {
       output()->print_cr("Help unavailable : '%s' : No such command", _cmd.value());
     }
   } else {
     output()->print_cr("The following commands are available:");
     GrowableArray<const char *>* cmd_list = DCmdFactory::DCmd_list();
     for (int i = 0; i < cmd_list->length(); i++) {
       DCmdFactory* factory = DCmdFactory::factory(cmd_list->at(i),
                                                   strlen(cmd_list->at(i)));
       if (!factory->is_hidden()) {
         output()->print_cr("%s%s", factory->name(),
                            factory->is_enabled() ? "" : " [disabled]");
       }
       factory = factory->_next;
     }
     output()->print_cr("\nFor more information about a specific command use 'help <command>'.");
   }
 }
 int HelpDCmd::num_arguments() {
   ResourceMark rm;
   HelpDCmd* dcmd = new HelpDCmd(NULL, false);
   if (dcmd != NULL) {
     DCmdMark mark(dcmd);
     return dcmd->_dcmdparser.num_arguments();
   } else {
     return 0;
   }
 }
 void VersionDCmd::execute(TRAPS) {
   output()->print_cr("%s version %s", Abstract_VM_Version::vm_name(),
           Abstract_VM_Version::vm_release());
   JDK_Version jdk_version = JDK_Version::current();
   if (jdk_version.update_version() > 0) {
     output()->print_cr("JDK %d.%d_%02d", jdk_version.major_version(),
             jdk_version.minor_version(), jdk_version.update_version());
   } else {
     output()->print_cr("JDK %d.%d", jdk_version.major_version(),
             jdk_version.minor_version());
   }
 }
 PrintVMFlagsDCmd::PrintVMFlagsDCmd(outputStream* output, bool heap) :
                                    DCmdWithParser(output, heap),
   _all("-all", "Print all flags supported by the VM", "BOOLEAN", false, "false") {
   _dcmdparser.add_dcmd_option(&_all);
 }
 void PrintVMFlagsDCmd::execute(TRAPS) {
   if (_all.value()) {
     CommandLineFlags::printFlags(output(), true);
   } else {
     CommandLineFlags::printSetFlags(output());
   }
 }
 int PrintVMFlagsDCmd::num_arguments() {
     ResourceMark rm;
     PrintVMFlagsDCmd* dcmd = new PrintVMFlagsDCmd(NULL, false);
     if (dcmd != NULL) {
       DCmdMark mark(dcmd);
       return dcmd->_dcmdparser.num_arguments();
     } else {
       return 0;
     }
 }
 void PrintSystemPropertiesDCmd::execute(TRAPS) {
   // load sun.misc.VMSupport
   Symbol* klass = vmSymbols::sun_misc_VMSupport();
   Klass* k = SystemDictionary::resolve_or_fail(klass, true, CHECK);
   instanceKlassHandle ik (THREAD, k);
   if (ik->should_be_initialized()) {
     ik->initialize(THREAD);
   }
   if (HAS_PENDING_EXCEPTION) {
     java_lang_Throwable::print(PENDING_EXCEPTION, output());
     output()->cr();
     CLEAR_PENDING_EXCEPTION;
     return;
   }
   // invoke the serializePropertiesToByteArray method
   JavaValue result(T_OBJECT);
   JavaCallArguments args;
   Symbol* signature = vmSymbols::serializePropertiesToByteArray_signature();
   JavaCalls::call_static(&result,
                          ik,
                          vmSymbols::serializePropertiesToByteArray_name(),
                          signature,
                          &args,
                          THREAD);
   if (HAS_PENDING_EXCEPTION) {
     java_lang_Throwable::print(PENDING_EXCEPTION, output());
     output()->cr();
     CLEAR_PENDING_EXCEPTION;
     return;
   }
   // The result should be a [B
   oop res = (oop)result.get_jobject();
   assert(res->is_typeArray(), "just checking");
   assert(TypeArrayKlass::cast(res->klass())->element_type() == T_BYTE, "just checking");
   // copy the bytes to the output stream
   typeArrayOop ba = typeArrayOop(res);
   jbyte* addr = typeArrayOop(res)->byte_at_addr(0);
   output()->print_raw((const char*)addr, ba->length());
 }
 VMUptimeDCmd::VMUptimeDCmd(outputStream* output, bool heap) :
                            DCmdWithParser(output, heap),
   _date("-date", "Add a prefix with current date", "BOOLEAN", false, "false") {
   _dcmdparser.add_dcmd_option(&_date);
 }
 void VMUptimeDCmd::execute(TRAPS) {
   if (_date.value()) {
     output()->date_stamp(true, "", ": ");
   }
   output()->time_stamp().update_to(tty->time_stamp().ticks());
   output()->stamp();
   output()->print_cr(" s");
 }
 int VMUptimeDCmd::num_arguments() {
   ResourceMark rm;
   VMUptimeDCmd* dcmd = new VMUptimeDCmd(NULL, false);
   if (dcmd != NULL) {
     DCmdMark mark(dcmd);
     return dcmd->_dcmdparser.num_arguments();
   } else {
     return 0;
   }
 }
 void SystemGCDCmd::execute(TRAPS) {
   Universe::heap()->collect(GCCause::_java_lang_system_gc);
 }
 void RunFinalizationDCmd::execute(TRAPS) {
   Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::java_lang_System(),
                                                  true, CHECK);
   instanceKlassHandle klass(THREAD, k);
   JavaValue result(T_VOID);
   JavaCalls::call_static(&result, klass,
                          vmSymbols::run_finalization_name(),
                          vmSymbols::void_method_signature(), CHECK);
 }
 #if INCLUDE_SERVICES // Heap dumping/inspection supported
 HeapDumpDCmd::HeapDumpDCmd(outputStream* output, bool heap) :
                            DCmdWithParser(output, heap),
   _filename("filename","Name of the dump file", "STRING",true),
   _all("-all", "Dump all objects, including unreachable objects",
        "BOOLEAN", false, "false") {
   _dcmdparser.add_dcmd_option(&_all);
   _dcmdparser.add_dcmd_argument(&_filename);
 }
 void HeapDumpDCmd::execute(TRAPS) {
   // Request a full GC before heap dump if _all is false
   // This helps reduces the amount of unreachable objects in the dump
   // and makes it easier to browse.
   HeapDumper dumper(!_all.value() /* request GC if _all is false*/);
   int res = dumper.dump(_filename.value());
   if (res == 0) {
     output()->print_cr("Heap dump file created");
   } else {
     // heap dump failed
     ResourceMark rm;
     char* error = dumper.error_as_C_string();
     if (error == NULL) {
       output()->print_cr("Dump failed - reason unknown");
     } else {
       output()->print_cr("%s", error);
     }
   }
 }
 int HeapDumpDCmd::num_arguments() {
   ResourceMark rm;
   HeapDumpDCmd* dcmd = new HeapDumpDCmd(NULL, false);
   if (dcmd != NULL) {
     DCmdMark mark(dcmd);
     return dcmd->_dcmdparser.num_arguments();
   } else {
     return 0;
   }
 }
 ClassHistogramDCmd::ClassHistogramDCmd(outputStream* output, bool heap) :
                                        DCmdWithParser(output, heap),
   _all("-all", "Inspect all objects, including unreachable objects",
        "BOOLEAN", false, "false") {
   _dcmdparser.add_dcmd_option(&_all);
 }
 void ClassHistogramDCmd::execute(TRAPS) {
   VM_GC_HeapInspection heapop(output(),
                               !_all.value() /* request full gc if false */,
                               true /* need_prologue */);
   VMThread::execute(&heapop);
 }
 int ClassHistogramDCmd::num_arguments() {
   ResourceMark rm;
   ClassHistogramDCmd* dcmd = new ClassHistogramDCmd(NULL, false);
   if (dcmd != NULL) {
     DCmdMark mark(dcmd);
     return dcmd->_dcmdparser.num_arguments();
   } else {
     return 0;
   }
 }
 #define DEFAULT_COLUMNS "InstBytes,KlassBytes,CpAll,annotations,MethodCount,Bytecodes,MethodAll,ROAll,RWAll,Total"
 ClassStatsDCmd::ClassStatsDCmd(outputStream* output, bool heap) :
                                        DCmdWithParser(output, heap),
   _csv("-csv", "Print in CSV (comma-separated values) format for spreadsheets",
        "BOOLEAN", false, "false"),
   _all("-all", "Show all columns",
        "BOOLEAN", false, "false"),
   _help("-help", "Show meaning of all the columns",
        "BOOLEAN", false, "false"),
   _columns("columns", "Comma-separated list of all the columns to show. "
            "If not specified, the following columns are shown: " DEFAULT_COLUMNS,
            "STRING", false) {
   _dcmdparser.add_dcmd_option(&_all);
   _dcmdparser.add_dcmd_option(&_csv);
   _dcmdparser.add_dcmd_option(&_help);
   _dcmdparser.add_dcmd_argument(&_columns);
 }
 void ClassStatsDCmd::execute(TRAPS) {
   if (!UnlockDiagnosticVMOptions) {
     output()->print_cr("GC.class_stats command requires -XX:+UnlockDiagnosticVMOptions");
     return;
   }
   VM_GC_HeapInspection heapop(output(),
                               true, /* request_full_gc */
                               true /* need_prologue */);
   heapop.set_csv_format(_csv.value());
   heapop.set_print_help(_help.value());
   heapop.set_print_class_stats(true);
   if (_all.value()) {
     if (_columns.has_value()) {
       output()->print_cr("Cannot specify -all and individual columns at the same time");
       return;
     } else {
       heapop.set_columns(NULL);
     }
   } else {
     if (_columns.has_value()) {
       heapop.set_columns(_columns.value());
     } else {
       heapop.set_columns(DEFAULT_COLUMNS);
     }
   }
   VMThread::execute(&heapop);
 }
 int ClassStatsDCmd::num_arguments() {
   ResourceMark rm;
   ClassStatsDCmd* dcmd = new ClassStatsDCmd(NULL, false);
   if (dcmd != NULL) {
     DCmdMark mark(dcmd);
     return dcmd->_dcmdparser.num_arguments();
   } else {
     return 0;
   }
 }
 #endif // INCLUDE_SERVICES
 ThreadDumpDCmd::ThreadDumpDCmd(outputStream* output, bool heap) :
                                DCmdWithParser(output, heap),
   _locks("-l", "print java.util.concurrent locks", "BOOLEAN", false, "false") {
   _dcmdparser.add_dcmd_option(&_locks);
 }
 void ThreadDumpDCmd::execute(TRAPS) {
   // thread stacks
   VM_PrintThreads op1(output(), _locks.value());
   VMThread::execute(&op1);
   // JNI global handles
   VM_PrintJNI op2(output());
   VMThread::execute(&op2);
   // Deadlock detection
   VM_FindDeadlocks op3(output());
   VMThread::execute(&op3);
 }
 int ThreadDumpDCmd::num_arguments() {
   ResourceMark rm;
   ThreadDumpDCmd* dcmd = new ThreadDumpDCmd(NULL, false);
   if (dcmd != NULL) {
     DCmdMark mark(dcmd);
     return dcmd->_dcmdparser.num_arguments();
   } else {
     return 0;
   }
 }
 // Enhanced JMX Agent support
 JMXStartRemoteDCmd::JMXStartRemoteDCmd(outputStream *output, bool heap_allocated) :
   DCmdWithParser(output, heap_allocated),
   _config_file
   ("config.file",
    "set com.sun.management.config.file", "STRING", false),
   _jmxremote_port
   ("jmxremote.port",
    "set com.sun.management.jmxremote.port", "STRING", false),
   _jmxremote_rmi_port
   ("jmxremote.rmi.port",
    "set com.sun.management.jmxremote.rmi.port", "STRING", false),
   _jmxremote_ssl
   ("jmxremote.ssl",
    "set com.sun.management.jmxremote.ssl", "STRING", false),
   _jmxremote_registry_ssl
   ("jmxremote.registry.ssl",
    "set com.sun.management.jmxremote.registry.ssl", "STRING", false),
   _jmxremote_authenticate
   ("jmxremote.authenticate",
    "set com.sun.management.jmxremote.authenticate", "STRING", false),
   _jmxremote_password_file
   ("jmxremote.password.file",
    "set com.sun.management.jmxremote.password.file", "STRING", false),
   _jmxremote_access_file
   ("jmxremote.access.file",
    "set com.sun.management.jmxremote.access.file", "STRING", false),
   _jmxremote_login_config
   ("jmxremote.login.config",
    "set com.sun.management.jmxremote.login.config", "STRING", false),
   _jmxremote_ssl_enabled_cipher_suites
   ("jmxremote.ssl.enabled.cipher.suites",
    "set com.sun.management.jmxremote.ssl.enabled.cipher.suite", "STRING", false),
   _jmxremote_ssl_enabled_protocols
   ("jmxremote.ssl.enabled.protocols",
    "set com.sun.management.jmxremote.ssl.enabled.protocols", "STRING", false),
   _jmxremote_ssl_need_client_auth
   ("jmxremote.ssl.need.client.auth",
    "set com.sun.management.jmxremote.need.client.auth", "STRING", false),
   _jmxremote_ssl_config_file
   ("jmxremote.ssl.config.file",
    "set com.sun.management.jmxremote.ssl_config_file", "STRING", false),
 // JDP Protocol support
   _jmxremote_autodiscovery
   ("jmxremote.autodiscovery",
    "set com.sun.management.jmxremote.autodiscovery", "STRING", false),
    _jdp_port
   ("jdp.port",
    "set com.sun.management.jdp.port", "INT", false),
    _jdp_address
   ("jdp.address",
    "set com.sun.management.jdp.address", "STRING", false),
    _jdp_source_addr
   ("jdp.source_addr",
    "set com.sun.management.jdp.source_addr", "STRING", false),
    _jdp_ttl
   ("jdp.ttl",
    "set com.sun.management.jdp.ttl", "INT", false),
    _jdp_pause
   ("jdp.pause",
    "set com.sun.management.jdp.pause", "INT", false)
   {
     _dcmdparser.add_dcmd_option(&_config_file);
     _dcmdparser.add_dcmd_option(&_jmxremote_port);
     _dcmdparser.add_dcmd_option(&_jmxremote_rmi_port);
     _dcmdparser.add_dcmd_option(&_jmxremote_ssl);
     _dcmdparser.add_dcmd_option(&_jmxremote_registry_ssl);
     _dcmdparser.add_dcmd_option(&_jmxremote_authenticate);
     _dcmdparser.add_dcmd_option(&_jmxremote_password_file);
     _dcmdparser.add_dcmd_option(&_jmxremote_access_file);
     _dcmdparser.add_dcmd_option(&_jmxremote_login_config);
     _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_cipher_suites);
     _dcmdparser.add_dcmd_option(&_jmxremote_ssl_enabled_protocols);
     _dcmdparser.add_dcmd_option(&_jmxremote_ssl_need_client_auth);
     _dcmdparser.add_dcmd_option(&_jmxremote_ssl_config_file);
     _dcmdparser.add_dcmd_option(&_jmxremote_autodiscovery);
     _dcmdparser.add_dcmd_option(&_jdp_port);
     _dcmdparser.add_dcmd_option(&_jdp_address);
     _dcmdparser.add_dcmd_option(&_jdp_source_addr);
     _dcmdparser.add_dcmd_option(&_jdp_ttl);
     _dcmdparser.add_dcmd_option(&_jdp_pause);
 }
 int JMXStartRemoteDCmd::num_arguments() {
   ResourceMark rm;
   JMXStartRemoteDCmd* dcmd = new JMXStartRemoteDCmd(NULL, false);
   if (dcmd != NULL) {
     DCmdMark mark(dcmd);
     return dcmd->_dcmdparser.num_arguments();
   } else {
     return 0;
   }
 }
 void JMXStartRemoteDCmd::execute(TRAPS) {
     ResourceMark rm(THREAD);
     HandleMark hm(THREAD);
     // Load and initialize the sun.management.Agent class
     // invoke startRemoteManagementAgent(string) method to start
     // the remote management server.
     // throw java.lang.NoSuchMethodError if the method doesn't exist
     Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
     Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), loader, Handle(), true, CHECK);
     instanceKlassHandle ik (THREAD, k);
     JavaValue result(T_VOID);
     // Pass all command line arguments to java as key=value,...
     // All checks are done on java side
     int len = 0;
     stringStream options;
     char comma[2] = {0,0};
     // Leave default values on Agent.class side and pass only
     // agruments explicitly set by user. All arguments passed
     // to jcmd override properties with the same name set by
     // command line with -D or by managmenent.properties
     // file.
 #define PUT_OPTION(a) \
     if ( (a).is_set() ){ \
         options.print(\
                ( *((a).type()) == 'I' ) ? "%scom.sun.management.%s=%d" : "%scom.sun.management.%s=%s",\
                 comma, (a).name(), (a).value()); \
         comma[0] = ','; \
     }
     PUT_OPTION(_config_file);
     PUT_OPTION(_jmxremote_port);
     PUT_OPTION(_jmxremote_rmi_port);
     PUT_OPTION(_jmxremote_ssl);
     PUT_OPTION(_jmxremote_registry_ssl);
     PUT_OPTION(_jmxremote_authenticate);
     PUT_OPTION(_jmxremote_password_file);
     PUT_OPTION(_jmxremote_access_file);
     PUT_OPTION(_jmxremote_login_config);
     PUT_OPTION(_jmxremote_ssl_enabled_cipher_suites);
     PUT_OPTION(_jmxremote_ssl_enabled_protocols);
     PUT_OPTION(_jmxremote_ssl_need_client_auth);
     PUT_OPTION(_jmxremote_ssl_config_file);
     PUT_OPTION(_jmxremote_autodiscovery);
     PUT_OPTION(_jdp_port);
     PUT_OPTION(_jdp_address);
     PUT_OPTION(_jdp_source_addr);
     PUT_OPTION(_jdp_ttl);
     PUT_OPTION(_jdp_pause);
 #undef PUT_OPTION
     Handle str = java_lang_String::create_from_str(options.as_string(), CHECK);
     JavaCalls::call_static(&result, ik, vmSymbols::startRemoteAgent_name(), vmSymbols::string_void_signature(), str, CHECK);
 }
 JMXStartLocalDCmd::JMXStartLocalDCmd(outputStream *output, bool heap_allocated) :
   DCmd(output, heap_allocated)
 {
   // do nothing
 }
 void JMXStartLocalDCmd::execute(TRAPS) {
     ResourceMark rm(THREAD);
     HandleMark hm(THREAD);
     // Load and initialize the sun.management.Agent class
     // invoke startLocalManagementAgent(void) method to start
     // the local management server
     // throw java.lang.NoSuchMethodError if method doesn't exist
     Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
     Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), loader, Handle(), true, CHECK);
     instanceKlassHandle ik (THREAD, k);
     JavaValue result(T_VOID);
     JavaCalls::call_static(&result, ik, vmSymbols::startLocalAgent_name(), vmSymbols::void_method_signature(), CHECK);
 }
 void JMXStopRemoteDCmd::execute(TRAPS) {
     ResourceMark rm(THREAD);
     HandleMark hm(THREAD);
     // Load and initialize the sun.management.Agent class
     // invoke stopRemoteManagementAgent method to stop the
     // management server
     // throw java.lang.NoSuchMethodError if method doesn't exist
     Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
     Klass* k = SystemDictionary::resolve_or_fail(vmSymbols::sun_management_Agent(), loader, Handle(), true, CHECK);
     instanceKlassHandle ik (THREAD, k);
     JavaValue result(T_VOID);
     JavaCalls::call_static(&result, ik, vmSymbols::stopRemoteAgent_name(), vmSymbols::void_method_signature(), CHECK);
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/services/diagnosticCommand.cpp@35f8765422b9 (annotated)

src/share/vm/services/diagnosticCommand.cpp