/*
* Copyright (c) 2012, 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_implementation/shared/gcTimer.hpp"
#include "gc_implementation/shared/gcTraceTime.hpp"
#include "runtime/globals.hpp"
#include "runtime/os.hpp"
#include "runtime/safepoint.hpp"
#include "runtime/timer.hpp"
#include "utilities/ostream.hpp"
#ifdef TARGET_OS_FAMILY_linux
# include "thread_linux.inline.hpp"
#endif
#ifdef TARGET_OS_FAMILY_solaris
# include "thread_solaris.inline.hpp"
#endif
#ifdef TARGET_OS_FAMILY_windows
# include "thread_windows.inline.hpp"
#endif
#ifdef TARGET_OS_FAMILY_bsd
# include "thread_bsd.inline.hpp"
#endif
GCTraceTime::GCTraceTime(const char* title, bool doit, bool print_cr, GCTimer* timer) :
_title(title), _doit(doit), _print_cr(print_cr), _timer(timer) {
if (_doit || _timer != NULL) {
_start_counter = os::elapsed_counter();
}
if (_timer != NULL) {
assert(SafepointSynchronize::is_at_safepoint(), "Tracing currently only supported at safepoints");
assert(Thread::current()->is_VM_thread(), "Tracing currently only supported from the VM thread");
_timer->register_gc_phase_start(title, _start_counter);
}
if (_doit) {
gclog_or_tty->date_stamp(PrintGCDateStamps);
gclog_or_tty->stamp(PrintGCTimeStamps);
gclog_or_tty->print("[%s", title);
gclog_or_tty->flush();
}
}
GCTraceTime::~GCTraceTime() {
jlong stop_counter = 0;
if (_doit || _timer != NULL) {
stop_counter = os::elapsed_counter();
}
if (_timer != NULL) {
_timer->register_gc_phase_end(stop_counter);
}
if (_doit) {
double seconds = TimeHelper::counter_to_seconds(stop_counter - _start_counter);
if (_print_cr) {
gclog_or_tty->print_cr(", %3.7f secs]", seconds);
} else {
gclog_or_tty->print(", %3.7f secs]", seconds);
}
gclog_or_tty->flush();
}
}