1 /*
   2  * Copyright (c) 2003, 2006, 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 class RuntimeService : public AllStatic {
  26 private:
  27   static PerfCounter* _sync_time_ticks;        // Accumulated time spent getting to safepoints
  28   static PerfCounter* _total_safepoints;
  29   static PerfCounter* _safepoint_time_ticks;   // Accumulated time at safepoints
  30   static PerfCounter* _application_time_ticks; // Accumulated time not at safepoints
  31   static PerfCounter* _thread_interrupt_signaled_count;// os:interrupt thr_kill
  32   static PerfCounter* _interrupted_before_count;  // _INTERRUPTIBLE OS_INTRPT
  33   static PerfCounter* _interrupted_during_count;  // _INTERRUPTIBLE OS_INTRPT
  34 
  35   static TimeStamp _safepoint_timer;
  36   static TimeStamp _app_timer;
  37 
  38 public:
  39   static void init();
  40 
  41   static jlong safepoint_sync_time_ms();
  42   static jlong safepoint_count();
  43   static jlong safepoint_time_ms();
  44   static jlong application_time_ms();
  45 
  46   static double last_safepoint_time_sec()      { return _safepoint_timer.seconds(); }
  47   static double last_application_time_sec()    { return _app_timer.seconds(); }
  48 
  49   // callbacks
  50   static void record_safepoint_begin();
  51   static void record_safepoint_synchronized();
  52   static void record_safepoint_end();
  53   static void record_application_start();
  54 
  55   // interruption events
  56   static void record_interrupted_before_count();
  57   static void record_interrupted_during_count();
  58   static void record_thread_interrupt_signaled_count();
  59 };