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src/share/vm/runtime/timer.hpp

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rev 7854 : imported patch 8027962-per-phase-timing-measurements-for-strong-roots-processing
rev 7855 : [mq]: 8027962-bengt-suggestions
   1 /*
   2  * Copyright (c) 1997, 2013, 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  *


  84   bool          _verbose;   // report every timing
  85   elapsedTimer  _t;         // timer
  86   elapsedTimer* _accum;     // accumulator
  87  public:
  88   // Constructors
  89   TraceTime(const char* title,
  90             bool doit = true);
  91   TraceTime(const char* title,
  92             elapsedTimer* accumulator,
  93             bool doit = true,
  94             bool verbose = false);
  95   ~TraceTime();
  96 
  97   // Accessors
  98   void set_verbose(bool verbose)  { _verbose = verbose; }
  99   bool verbose() const            { return _verbose;    }
 100 
 101   // Activation
 102   void suspend()  { if (_active) _t.stop();  }
 103   void resume()   { if (_active) _t.start(); }

















 104 };
 105 
 106 class TraceCPUTime: public StackObj {
 107  private:
 108   bool _active;                 // true if times will be measured and printed
 109   bool _print_cr;               // if true print carriage return at end
 110   double _starting_user_time;   // user time at start of measurement
 111   double _starting_system_time; // system time at start of measurement
 112   double _starting_real_time;   // real time at start of measurement
 113   outputStream* _logfile;       // output is printed to this stream
 114   bool _error;                  // true if an error occurred, turns off output
 115 
 116  public:
 117   TraceCPUTime(bool doit = true,
 118                bool print_cr = true,
 119                outputStream *logfile = NULL);
 120   ~TraceCPUTime();
 121 };
 122 
 123 class TimeHelper {
   1 /*
   2  * Copyright (c) 1997, 2015, 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  *


  84   bool          _verbose;   // report every timing
  85   elapsedTimer  _t;         // timer
  86   elapsedTimer* _accum;     // accumulator
  87  public:
  88   // Constructors
  89   TraceTime(const char* title,
  90             bool doit = true);
  91   TraceTime(const char* title,
  92             elapsedTimer* accumulator,
  93             bool doit = true,
  94             bool verbose = false);
  95   ~TraceTime();
  96 
  97   // Accessors
  98   void set_verbose(bool verbose)  { _verbose = verbose; }
  99   bool verbose() const            { return _verbose;    }
 100 
 101   // Activation
 102   void suspend()  { if (_active) _t.stop();  }
 103   void resume()   { if (_active) _t.start(); }
 104 };
 105 
 106 class PhaseTimeData : public StackObj {
 107 public:
 108   virtual bool active() const = 0;
 109   virtual void set_value(uint phase, double value) = 0;
 110 };
 111 
 112 class TrackPhaseTime : public StackObj {
 113  private:
 114   PhaseTimeData* _data;
 115   uint           _phase;
 116   jlong          _last;
 117  public:
 118   // Constructors
 119   TrackPhaseTime(PhaseTimeData *data, uint phase);
 120   ~TrackPhaseTime();
 121 };
 122 
 123 class TraceCPUTime: public StackObj {
 124  private:
 125   bool _active;                 // true if times will be measured and printed
 126   bool _print_cr;               // if true print carriage return at end
 127   double _starting_user_time;   // user time at start of measurement
 128   double _starting_system_time; // system time at start of measurement
 129   double _starting_real_time;   // real time at start of measurement
 130   outputStream* _logfile;       // output is printed to this stream
 131   bool _error;                  // true if an error occurred, turns off output
 132 
 133  public:
 134   TraceCPUTime(bool doit = true,
 135                bool print_cr = true,
 136                outputStream *logfile = NULL);
 137   ~TraceCPUTime();
 138 };
 139 
 140 class TimeHelper {
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