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 #include "precompiled.hpp"
  26 #include "gc/shared/gcTimer.hpp"
  27 #include "gc/shared/gcTrace.hpp"
  28 #include "gc/shared/gcTraceTime.hpp"
  29 #include "runtime/globals.hpp"
  30 #include "runtime/os.hpp"
  31 #include "runtime/safepoint.hpp"
  32 #include "runtime/thread.inline.hpp"
  33 #include "runtime/timer.hpp"
  34 #include "utilities/ostream.hpp"
  35 #include "utilities/ticks.inline.hpp"
  36 
  37 
  38 GCTraceTimeImpl::GCTraceTimeImpl(const char* title, bool doit, bool print_cr, GCTimer* timer) :
  39     _title(title), _doit(doit), _print_cr(print_cr), _timer(timer), _start_counter() {
  40   if (_doit || _timer != NULL) {
  41     _start_counter.stamp();








  42   }
  43 
  44   if (_timer != NULL) {
  45     assert(SafepointSynchronize::is_at_safepoint(), "Tracing currently only supported at safepoints");
  46     assert(Thread::current()->is_VM_thread(), "Tracing currently only supported from the VM thread");
  47 
  48     _timer->register_gc_phase_start(title, _start_counter);
  49   }
  50 
  51   if (_doit) {
  52     gclog_or_tty->gclog_stamp();
  53     gclog_or_tty->print("[%s", title);
  54     gclog_or_tty->flush();
  55   }
  56 }
  57 
  58 GCTraceTimeImpl::~GCTraceTimeImpl() {
  59   Ticks stop_counter;
  60 
  61   if (_doit || _timer != NULL) {
  62     stop_counter.stamp();
  63   }
  64 
  65   if (_timer != NULL) {
  66     _timer->register_gc_phase_end(stop_counter);
  67   }
  68 
  69   if (_doit) {
  70     const Tickspan duration = stop_counter - _start_counter;
  71     double duration_in_seconds = TicksToTimeHelper::seconds(duration);
  72     if (_print_cr) {
  73       gclog_or_tty->print_cr(", %3.7f secs]", duration_in_seconds);
  74     } else {
  75       gclog_or_tty->print(", %3.7f secs]", duration_in_seconds);
  76     }
  77     gclog_or_tty->flush();
  78   }
  79 }

   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 #include "precompiled.hpp"


  26 #include "gc/shared/gcTraceTime.hpp"
  27 #include "logging/log.hpp"
  28 #include "runtime/os.hpp"





  29 
  30 GCTraceCPUTime::GCTraceCPUTime() :
  31   _active(Log<LOG_TAGS(gc, cpu)>::is_info()),
  32   _starting_user_time(0.0),
  33   _starting_system_time(0.0),
  34   _starting_real_time(0.0)
  35 {
  36   if (_active) {
  37     bool valid = os::getTimesSecs(&_starting_real_time,
  38                                &_starting_user_time,
  39                                &_starting_system_time);
  40     if (!valid) {
  41       log_warning(gc, cpu)("TraceCPUTime: os::getTimesSecs() returned invalid result");
  42       _active = false;
  43     }












  44   }
  45 }
  46 
  47 GCTraceCPUTime::~GCTraceCPUTime() {
  48   if (_active) {
  49     double real_time, user_time, system_time;
  50     bool valid = os::getTimesSecs(&real_time, &user_time, &system_time);
  51     if (valid) {
  52       log_info(gc, cpu)("User=%3.2fs Sys=%3.2fs Real=%3.2fs",
  53                         user_time - _starting_user_time,
  54                         system_time - _starting_system_time,
  55                         real_time - _starting_real_time);







  56     } else {
  57       log_warning(gc, cpu)("TraceCPUTime: os::getTimesSecs() returned invalid result");
  58     }

  59   }
  60 }