1/*
2 * Copyright (c) 2012, 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 *
23 */
24
25#include "precompiled.hpp"
26#include "gc/shared/gcTraceTime.inline.hpp"
27#include "logging/log.hpp"
28#include "runtime/os.hpp"
29
30GCTraceCPUTime::GCTraceCPUTime() :
31 _active(log_is_enabled(Info, gc, cpu)),
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
47GCTraceCPUTime::~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}
61