/*

 * Copyright (c) 2012, 2015, 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 "gc/shared/gcTraceTime.inline.hpp"

#include "logging/log.hpp"

#include "runtime/os.hpp"

GCTraceCPUTime::GCTraceCPUTime() :

  _active(log_is_enabled(Info, gc, cpu)),

  _starting_user_time(0.0),

  _starting_system_time(0.0),

  _starting_real_time(0.0)

{

  if (_active) {

    bool valid = os::getTimesSecs(&_starting_real_time,

                               &_starting_user_time,

                               &_starting_system_time);

    if (!valid) {

      log_warning(gc, cpu)("TraceCPUTime: os::getTimesSecs() returned invalid result");

      _active = false;

    }

  }

}

GCTraceCPUTime::~GCTraceCPUTime() {

  if (_active) {

    double real_time, user_time, system_time;

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

    if (valid) {

      log_info(gc, cpu)("User=%3.2fs Sys=%3.2fs Real=%3.2fs",

                        user_time - _starting_user_time,

                        system_time - _starting_system_time,

                        real_time - _starting_real_time);

    } else {

      log_warning(gc, cpu)("TraceCPUTime: os::getTimesSecs() returned invalid result");

    }

  }

}