Mercurial > hg > truffle
view src/share/vm/gc_implementation/shared/gcTraceTime.cpp @ 17387:0e120f2819ce
Merged
author | Christian Wirth <christian.wirth@oracle.com> |
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date | Thu, 09 Oct 2014 13:19:31 +0200 |
parents | 86e6d691f2e1 |
children | 0982ec23da03 |
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/* * Copyright (c) 2012, 2013, 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/thread.inline.hpp" #include "runtime/timer.hpp" #include "utilities/ostream.hpp" #include "utilities/ticks.inline.hpp" GCTraceTime::GCTraceTime(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) { if (PrintGCTimeStamps) { gclog_or_tty->stamp(); gclog_or_tty->print(": "); } gclog_or_tty->print("[%s", title); gclog_or_tty->flush(); } } GCTraceTime::~GCTraceTime() { 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(); } }