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

 /*

  * Copyright (c) 1997, 2014, 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 "oops/oop.inline.hpp"

 #include "runtime/timer.hpp"

 #include "utilities/ostream.hpp"

 #ifdef TARGET_OS_FAMILY_linux

 # include "os_linux.inline.hpp"

 #endif

 #ifdef TARGET_OS_FAMILY_solaris

 # include "os_solaris.inline.hpp"

 #endif

 #ifdef TARGET_OS_FAMILY_windows

 # include "os_windows.inline.hpp"

 #endif

 #ifdef TARGET_OS_FAMILY_aix

 # include "os_aix.inline.hpp"

 #endif

 #ifdef TARGET_OS_FAMILY_bsd

 # include "os_bsd.inline.hpp"

 #endif

 double TimeHelper::counter_to_seconds(jlong counter) {

   double count = (double) counter;

   double freq  = (double) os::elapsed_frequency();

   return counter/freq;

 }

 void elapsedTimer::add(elapsedTimer t) {

   _counter += t._counter;

 }

 void elapsedTimer::start() {

   if (!_active) {

     _active = true;

     _start_counter = os::elapsed_counter();

   }

 }

 void elapsedTimer::stop() {

   if (_active) {

     _counter += os::elapsed_counter() - _start_counter;

     _active = false;

   }

 }

 double elapsedTimer::seconds() const {

  return TimeHelper::counter_to_seconds(_counter);

 }

 jlong elapsedTimer::milliseconds() const {

   jlong ticks_per_ms = os::elapsed_frequency() / 1000;

   return _counter / ticks_per_ms;

 }

 jlong elapsedTimer::active_ticks() const {

   if (!_active) {

     return ticks();

   }

   jlong counter = _counter + os::elapsed_counter() - _start_counter;

   return counter;

 }

 void TimeStamp::update_to(jlong ticks) {

   _counter = ticks;

   if (_counter == 0)  _counter = 1;

   assert(is_updated(), "must not look clear");

 }

 void TimeStamp::update() {

   update_to(os::elapsed_counter());

 }

 double TimeStamp::seconds() const {

   assert(is_updated(), "must not be clear");

   jlong new_count = os::elapsed_counter();

   return TimeHelper::counter_to_seconds(new_count - _counter);

 }

 jlong TimeStamp::milliseconds() const {

   assert(is_updated(), "must not be clear");

   jlong new_count = os::elapsed_counter();

   jlong count = new_count - _counter;

   jlong ticks_per_ms = os::elapsed_frequency() / 1000;

   return count / ticks_per_ms;

 }

 jlong TimeStamp::ticks_since_update() const {

   assert(is_updated(), "must not be clear");

   return os::elapsed_counter() - _counter;

 }

 TraceTime::TraceTime(const char* title,

                      bool doit) {

   _active   = doit;

   _verbose  = true;

   if (_active) {

     _accum = NULL;

     tty->stamp(PrintGCTimeStamps);

     tty->print("[%s", title);

     tty->flush();

     _t.start();

   }

 }

 TraceTime::TraceTime(const char* title,

                      elapsedTimer* accumulator,

                      bool doit,

                      bool verbose) {

   _active = doit;

   _verbose = verbose;

   if (_active) {

     if (_verbose) {

       tty->stamp(PrintGCTimeStamps);

       tty->print("[%s", title);

       tty->flush();

     }

     _accum = accumulator;

     _t.start();

   }

 }

 TraceTime::~TraceTime() {

   if (_active) {

     _t.stop();

     if (_accum!=NULL) _accum->add(_t);

     if (_verbose) {

       tty->print_cr(", %3.7f secs]", _t.seconds());

       tty->flush();

     }

   }

 }

 TraceCPUTime::TraceCPUTime(bool doit,

                bool print_cr,

                outputStream *logfile) :

   _active(doit),

   _print_cr(print_cr),

   _starting_user_time(0.0),

   _starting_system_time(0.0),

   _starting_real_time(0.0),

   _logfile(logfile),

   _error(false) {

   if (_active) {

     if (logfile != NULL) {

       _logfile = logfile;

     } else {

       _logfile = tty;

     }

     _error = !os::getTimesSecs(&_starting_real_time,

                                &_starting_user_time,

                                &_starting_system_time);

   }

 }

 TraceCPUTime::~TraceCPUTime() {

   if (_active) {

     bool valid = false;

     if (!_error) {

       double real_secs;                 // walk clock time

       double system_secs;               // system time

       double user_secs;                 // user time for all threads

       double real_time, user_time, system_time;

       valid = os::getTimesSecs(&real_time, &user_time, &system_time);

       if (valid) {

         user_secs = user_time - _starting_user_time;

         system_secs = system_time - _starting_system_time;

         real_secs = real_time - _starting_real_time;

         _logfile->print(" [Times: user=%3.2f sys=%3.2f, real=%3.2f secs] ",

           user_secs, system_secs, real_secs);

       } else {

         _logfile->print("[Invalid result in TraceCPUTime]");

       }

     } else {

       _logfile->print("[Error in TraceCPUTime]");

     }

     if (_print_cr) {

       _logfile->cr();

     }

     _logfile->flush();

   }

 }