sla@5237: /*
sla@5237:  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
sla@5237:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
sla@5237:  *
sla@5237:  * This code is free software; you can redistribute it and/or modify it
sla@5237:  * under the terms of the GNU General Public License version 2 only, as
sla@5237:  * published by the Free Software Foundation.
sla@5237:  *
sla@5237:  * This code is distributed in the hope that it will be useful, but WITHOUT
sla@5237:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
sla@5237:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
sla@5237:  * version 2 for more details (a copy is included in the LICENSE file that
sla@5237:  * accompanied this code).
sla@5237:  *
sla@5237:  * You should have received a copy of the GNU General Public License version
sla@5237:  * 2 along with this work; if not, write to the Free Software Foundation,
sla@5237:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
sla@5237:  *
sla@5237:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
sla@5237:  * or visit www.oracle.com if you need additional information or have any
sla@5237:  * questions.
sla@5237:  *
sla@5237:  */
sla@5237: 
sla@5237: #include "precompiled.hpp"
sla@5237: #include "gc_implementation/shared/gcTimer.hpp"
sla@5237: #include "gc_implementation/shared/gcTraceTime.hpp"
sla@5237: #include "runtime/globals.hpp"
sla@5237: #include "runtime/os.hpp"
sla@5237: #include "runtime/safepoint.hpp"
sla@5237: #include "runtime/thread.inline.hpp"
sla@5237: #include "runtime/timer.hpp"
sla@5237: #include "utilities/ostream.hpp"
sla@5237: 
sla@5237: 
sla@5237: GCTraceTime::GCTraceTime(const char* title, bool doit, bool print_cr, GCTimer* timer) :
sla@5237:     _title(title), _doit(doit), _print_cr(print_cr), _timer(timer) {
sla@5237:   if (_doit || _timer != NULL) {
sla@5237:     _start_counter = os::elapsed_counter();
sla@5237:   }
sla@5237: 
sla@5237:   if (_timer != NULL) {
sla@5237:     assert(SafepointSynchronize::is_at_safepoint(), "Tracing currently only supported at safepoints");
sla@5237:     assert(Thread::current()->is_VM_thread(), "Tracing currently only supported from the VM thread");
sla@5237: 
sla@5237:     _timer->register_gc_phase_start(title, _start_counter);
sla@5237:   }
sla@5237: 
sla@5237:   if (_doit) {
sla@5237:     if (PrintGCTimeStamps) {
sla@5237:       gclog_or_tty->stamp();
sla@5237:       gclog_or_tty->print(": ");
sla@5237:     }
sla@5237:     gclog_or_tty->print("[%s", title);
sla@5237:     gclog_or_tty->flush();
sla@5237:   }
sla@5237: }
sla@5237: 
sla@5237: GCTraceTime::~GCTraceTime() {
sla@5237:   jlong stop_counter = 0;
sla@5237: 
sla@5237:   if (_doit || _timer != NULL) {
sla@5237:     stop_counter = os::elapsed_counter();
sla@5237:   }
sla@5237: 
sla@5237:   if (_timer != NULL) {
sla@5237:     _timer->register_gc_phase_end(stop_counter);
sla@5237:   }
sla@5237: 
sla@5237:   if (_doit) {
sla@5237:     double seconds = TimeHelper::counter_to_seconds(stop_counter - _start_counter);
sla@5237:     if (_print_cr) {
sla@5237:       gclog_or_tty->print_cr(", %3.7f secs]", seconds);
sla@5237:     } else {
sla@5237:       gclog_or_tty->print(", %3.7f secs]", seconds);
sla@5237:     }
sla@5237:     gclog_or_tty->flush();
sla@5237:   }
sla@5237: }