src/hotspot/share/gc/g1/g1ConcurrentStartToMixedTimeTracker.hpp

rev 60060 : imported patch 8210462-lkorinth-review

*** 1,7 ****
  /*
!  * Copyright (c) 2001, 2019, 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.
--- 1,7 ----
  /*
!  * Copyright (c) 2001, 2020, 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.
*** 20,56 ****
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   *
   */
  
! #ifndef SHARE_GC_G1_G1INITIALMARKTOMIXEDTIMETRACKER_HPP
! #define SHARE_GC_G1_G1INITIALMARKTOMIXEDTIMETRACKER_HPP
  
- #include "utilities/globalDefinitions.hpp"
  #include "utilities/debug.hpp"
  
! // Used to track time from the end of initial mark to the first mixed GC.
! // After calling the initial mark/mixed gc notifications, the result can be
  // obtained in last_marking_time() once, after which the tracking resets.
  // Any pauses recorded by add_pause() will be subtracted from that results.
! class G1InitialMarkToMixedTimeTracker {
  private:
    bool _active;
!   double _initial_mark_end_time;
    double _mixed_start_time;
    double _total_pause_time;
  
    double wall_time() const {
!     return _mixed_start_time - _initial_mark_end_time;
    }
  public:
!   G1InitialMarkToMixedTimeTracker() { reset(); }
  
!   // Record initial mark pause end, starting the time tracking.
!   void record_initial_mark_end(double end_time) {
!     assert(!_active, "Initial mark out of order.");
!     _initial_mark_end_time = end_time;
      _active = true;
    }
  
    // Record the first mixed gc pause start, ending the time tracking.
    void record_mixed_gc_start(double start_time) {
--- 20,56 ----
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   *
   */
  
! #ifndef SHARE_GC_G1_G1CONCURRENTSTARTTOMIXEDTIMETRACKER_HPP
! #define SHARE_GC_G1_G1CONCURRENTSTARTTOMIXEDTIMETRACKER_HPP
  
  #include "utilities/debug.hpp"
+ #include "utilities/globalDefinitions.hpp"
  
! // Used to track time from the end of concurrent start to the first mixed GC.
! // After calling the concurrent start/mixed gc notifications, the result can be
  // obtained in last_marking_time() once, after which the tracking resets.
  // Any pauses recorded by add_pause() will be subtracted from that results.
! class G1ConcurrentStartToMixedTimeTracker {
  private:
    bool _active;
!   double _concurrent_start_end_time;
    double _mixed_start_time;
    double _total_pause_time;
  
    double wall_time() const {
!     return _mixed_start_time - _concurrent_start_end_time;
    }
  public:
!   G1ConcurrentStartToMixedTimeTracker() { reset(); }
  
!   // Record concurrent start pause end, starting the time tracking.
!   void record_concurrent_start_end(double end_time) {
!     assert(!_active, "Concurrent start out of order.");
!     _concurrent_start_end_time = end_time;
      _active = true;
    }
  
    // Record the first mixed gc pause start, ending the time tracking.
    void record_mixed_gc_start(double start_time) {
*** 60,87 ****
      }
    }
  
    double last_marking_time() {
      assert(has_result(), "Do not have all measurements yet.");
!     double result = (_mixed_start_time - _initial_mark_end_time) - _total_pause_time;
      reset();
      return result;
    }
  
    void reset() {
      _active = false;
      _total_pause_time = 0.0;
!     _initial_mark_end_time = -1.0;
      _mixed_start_time = -1.0;
    }
  
    void add_pause(double time) {
      if (_active) {
        _total_pause_time += time;
      }
    }
  
    // Returns whether we have a result that can be retrieved.
!   bool has_result() const { return _mixed_start_time > 0.0 && _initial_mark_end_time > 0.0; }
  };
  
! #endif // SHARE_GC_G1_G1INITIALMARKTOMIXEDTIMETRACKER_HPP
--- 60,87 ----
      }
    }
  
    double last_marking_time() {
      assert(has_result(), "Do not have all measurements yet.");
!     double result = (_mixed_start_time - _concurrent_start_end_time) - _total_pause_time;
      reset();
      return result;
    }
  
    void reset() {
      _active = false;
      _total_pause_time = 0.0;
!     _concurrent_start_end_time = -1.0;
      _mixed_start_time = -1.0;
    }
  
    void add_pause(double time) {
      if (_active) {
        _total_pause_time += time;
      }
    }
  
    // Returns whether we have a result that can be retrieved.
!   bool has_result() const { return _mixed_start_time > 0.0 && _concurrent_start_end_time > 0.0; }
  };
  
! #endif // SHARE_GC_G1_G1CONCURRENTSTARTTOMIXEDTIMETRACKER_HPP