Mercurial > hg > truffle
diff src/share/vm/gc_implementation/shared/gcTraceTime.cpp @ 10405:f2110083203d
8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author | sla |
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date | Mon, 10 Jun 2013 11:30:51 +0200 |
parents | |
children | 86e6d691f2e1 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/gc_implementation/shared/gcTraceTime.cpp Mon Jun 10 11:30:51 2013 +0200 @@ -0,0 +1,79 @@ +/* + * 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" + + +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) { + if (PrintGCTimeStamps) { + gclog_or_tty->stamp(); + gclog_or_tty->print(": "); + } + 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(); + } +}