Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2003, 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 "classfile/classLoader.hpp"

 #include "services/attachListener.hpp"

 #include "services/management.hpp"

 #include "services/runtimeService.hpp"

 #include "utilities/dtrace.hpp"

 #include "utilities/exceptions.hpp"

 #include "utilities/macros.hpp"

 #ifndef USDT2

 HS_DTRACE_PROBE_DECL(hs_private, safepoint__begin);

 HS_DTRACE_PROBE_DECL(hs_private, safepoint__end);

 #endif /* !USDT2 */

 #if INCLUDE_MANAGEMENT

 TimeStamp RuntimeService::_app_timer;

 TimeStamp RuntimeService::_safepoint_timer;

 PerfCounter*  RuntimeService::_sync_time_ticks = NULL;

 PerfCounter*  RuntimeService::_total_safepoints = NULL;

 PerfCounter*  RuntimeService::_safepoint_time_ticks = NULL;

 PerfCounter*  RuntimeService::_application_time_ticks = NULL;

 PerfCounter*  RuntimeService::_thread_interrupt_signaled_count = NULL;

 PerfCounter*  RuntimeService::_interrupted_before_count = NULL;

 PerfCounter*  RuntimeService::_interrupted_during_count = NULL;

 double RuntimeService::_last_safepoint_sync_time_sec = 0.0;

 void RuntimeService::init() {

   // Make sure the VM version is initialized

   Abstract_VM_Version::initialize();

   if (UsePerfData) {

     EXCEPTION_MARK;

     _sync_time_ticks =

               PerfDataManager::create_counter(SUN_RT, "safepointSyncTime",

                                               PerfData::U_Ticks, CHECK);

     _total_safepoints =

               PerfDataManager::create_counter(SUN_RT, "safepoints",

                                               PerfData::U_Events, CHECK);

     _safepoint_time_ticks =

               PerfDataManager::create_counter(SUN_RT, "safepointTime",

                                               PerfData::U_Ticks, CHECK);

     _application_time_ticks =

               PerfDataManager::create_counter(SUN_RT, "applicationTime",

                                               PerfData::U_Ticks, CHECK);

     // create performance counters for jvm_version and its capabilities

     PerfDataManager::create_constant(SUN_RT, "jvmVersion", PerfData::U_None,

                                      (jlong) Abstract_VM_Version::jvm_version(), CHECK);

     // I/O interruption related counters

     // thread signaling via os::interrupt()

     _thread_interrupt_signaled_count =

                 PerfDataManager::create_counter(SUN_RT,

                  "threadInterruptSignaled", PerfData::U_Events, CHECK);

     // OS_INTRPT via "check before" in _INTERRUPTIBLE

     _interrupted_before_count =

                 PerfDataManager::create_counter(SUN_RT, "interruptedBeforeIO",

                                                 PerfData::U_Events, CHECK);

     // OS_INTRPT via "check during" in _INTERRUPTIBLE

     _interrupted_during_count =

                 PerfDataManager::create_counter(SUN_RT, "interruptedDuringIO",

                                                 PerfData::U_Events, CHECK);

     // The capabilities counter is a binary representation of the VM capabilities in string.

     // This string respresentation simplifies the implementation of the client side

     // to parse the value.

     char capabilities[65];

     size_t len = sizeof(capabilities);

     memset((void*) capabilities, '0', len);

     capabilities[len-1] = '\0';

     capabilities[0] = AttachListener::is_attach_supported() ? '1' : '0';

 #if INCLUDE_SERVICES

     capabilities[1] = '1';

 #endif // INCLUDE_SERVICES

     PerfDataManager::create_string_constant(SUN_RT, "jvmCapabilities",

                                             capabilities, CHECK);

   }

 }

 void RuntimeService::record_safepoint_begin() {

 #ifndef USDT2

   HS_DTRACE_PROBE(hs_private, safepoint__begin);

 #else /* USDT2 */

   HS_PRIVATE_SAFEPOINT_BEGIN();

 #endif /* USDT2 */

   // Print the time interval in which the app was executing

   if (PrintGCApplicationConcurrentTime && _app_timer.is_updated()) {

     gclog_or_tty->date_stamp(PrintGCDateStamps);

     gclog_or_tty->stamp(PrintGCTimeStamps);

     gclog_or_tty->print_cr("Application time: %3.7f seconds",

                                 last_application_time_sec());

   }

   // update the time stamp to begin recording safepoint time

   _safepoint_timer.update();

   _last_safepoint_sync_time_sec = 0.0;

   if (UsePerfData) {

     _total_safepoints->inc();

     if (_app_timer.is_updated()) {

       _application_time_ticks->inc(_app_timer.ticks_since_update());

     }

   }

 }

 void RuntimeService::record_safepoint_synchronized() {

   if (UsePerfData) {

     _sync_time_ticks->inc(_safepoint_timer.ticks_since_update());

   }

   if (PrintGCApplicationStoppedTime) {

     _last_safepoint_sync_time_sec = last_safepoint_time_sec();

   }

 }

 void RuntimeService::record_safepoint_end() {

 #ifndef USDT2

   HS_DTRACE_PROBE(hs_private, safepoint__end);

 #else /* USDT2 */

   HS_PRIVATE_SAFEPOINT_END();

 #endif /* USDT2 */

   // Print the time interval for which the app was stopped

   // during the current safepoint operation.

   if (PrintGCApplicationStoppedTime) {

     gclog_or_tty->date_stamp(PrintGCDateStamps);

     gclog_or_tty->stamp(PrintGCTimeStamps);

     gclog_or_tty->print_cr("Total time for which application threads "

                            "were stopped: %3.7f seconds, "

                            "Stopping threads took: %3.7f seconds",

                            last_safepoint_time_sec(),

                            _last_safepoint_sync_time_sec);

   }

   // update the time stamp to begin recording app time

   _app_timer.update();

   if (UsePerfData) {

     _safepoint_time_ticks->inc(_safepoint_timer.ticks_since_update());

   }

 }

 void RuntimeService::record_application_start() {

   // update the time stamp to begin recording app time

   _app_timer.update();

 }

 // Don't need to record application end because we currently

 // exit at a safepoint and record_safepoint_begin() handles updating

 // the application time counter at VM exit.

 jlong RuntimeService::safepoint_sync_time_ms() {

   return UsePerfData ?

     Management::ticks_to_ms(_sync_time_ticks->get_value()) : -1;

 }

 jlong RuntimeService::safepoint_count() {

   return UsePerfData ?

     _total_safepoints->get_value() : -1;

 }

 jlong RuntimeService::safepoint_time_ms() {

   return UsePerfData ?

     Management::ticks_to_ms(_safepoint_time_ticks->get_value()) : -1;

 }

 jlong RuntimeService::application_time_ms() {

   return UsePerfData ?

     Management::ticks_to_ms(_application_time_ticks->get_value()) : -1;

 }

 void RuntimeService::record_interrupted_before_count() {

   if (UsePerfData) {

     _interrupted_before_count->inc();

   }

 }

 void RuntimeService::record_interrupted_during_count() {

   if (UsePerfData) {

     _interrupted_during_count->inc();

   }

 }

 void RuntimeService::record_thread_interrupt_signaled_count() {

   if (UsePerfData) {

     _thread_interrupt_signaled_count->inc();

   }

 }

 #endif // INCLUDE_MANAGEMENT