| /* |
| * 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/gcTimer.hpp" |
| #include "gc/shared/gcTrace.hpp" |
| #include "gc/shared/gcTraceTime.hpp" |
| #include "runtime/globals.hpp" |
| #include "runtime/os.hpp" |
| #include "runtime/safepoint.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "runtime/timer.hpp" |
| #include "utilities/ostream.hpp" |
| #include "utilities/ticks.inline.hpp" |
| |
| |
| GCTraceTimeImpl::GCTraceTimeImpl(const char* title, bool doit, bool print_cr, GCTimer* timer) : |
| _title(title), _doit(doit), _print_cr(print_cr), _timer(timer), _start_counter() { |
| if (_doit || _timer != NULL) { |
| _start_counter.stamp(); |
| } |
| |
| 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->gclog_stamp(); |
| gclog_or_tty->print("[%s", title); |
| gclog_or_tty->flush(); |
| } |
| } |
| |
| GCTraceTimeImpl::~GCTraceTimeImpl() { |
| Ticks stop_counter; |
| |
| if (_doit || _timer != NULL) { |
| stop_counter.stamp(); |
| } |
| |
| if (_timer != NULL) { |
| _timer->register_gc_phase_end(stop_counter); |
| } |
| |
| if (_doit) { |
| const Tickspan duration = stop_counter - _start_counter; |
| double duration_in_seconds = TicksToTimeHelper::seconds(duration); |
| if (_print_cr) { |
| gclog_or_tty->print_cr(", %3.7f secs]", duration_in_seconds); |
| } else { |
| gclog_or_tty->print(", %3.7f secs]", duration_in_seconds); |
| } |
| gclog_or_tty->flush(); |
| } |
| } |