< prev index next >

src/share/vm/runtime/timer.hpp

Print this page
rev 7854 : imported patch 8027962-per-phase-timing-measurements-for-strong-roots-processing


  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 #ifndef SHARE_VM_RUNTIME_TIMER_HPP
  26 #define SHARE_VM_RUNTIME_TIMER_HPP
  27 
  28 #include "utilities/globalDefinitions.hpp"
  29 


  30 // Timers for simple measurement.
  31 
  32 class elapsedTimer VALUE_OBJ_CLASS_SPEC {
  33   friend class VMStructs;
  34  private:
  35   jlong _counter;
  36   jlong _start_counter;
  37   bool  _active;
  38  public:
  39   elapsedTimer()             { _active = false; reset(); }
  40   void add(elapsedTimer t);
  41   void start();
  42   void stop();
  43   void reset()               { _counter = 0; }
  44   double seconds() const;
  45   jlong milliseconds() const;
  46   jlong ticks() const        { return _counter; }
  47   jlong active_ticks() const;
  48   bool  is_active() const { return _active; }
  49 };


  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 {


  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 #ifndef SHARE_VM_RUNTIME_TIMER_HPP
  26 #define SHARE_VM_RUNTIME_TIMER_HPP
  27 
  28 #include "utilities/globalDefinitions.hpp"
  29 
  30 class GCPhaseTimeTracker;
  31 
  32 // Timers for simple measurement.
  33 
  34 class elapsedTimer VALUE_OBJ_CLASS_SPEC {
  35   friend class VMStructs;
  36  private:
  37   jlong _counter;
  38   jlong _start_counter;
  39   bool  _active;
  40  public:
  41   elapsedTimer()             { _active = false; reset(); }
  42   void add(elapsedTimer t);
  43   void start();
  44   void stop();
  45   void reset()               { _counter = 0; }
  46   double seconds() const;
  47   jlong milliseconds() const;
  48   jlong ticks() const        { return _counter; }
  49   jlong active_ticks() const;
  50   bool  is_active() const { return _active; }
  51 };


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