Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/share/vm/gc_implementation/shared/gcTraceTime.cpp	Wed Apr 27 01:25:04 2016 +0800
     1.3 @@ -0,0 +1,81 @@
     1.4 +/*
     1.5 + * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +#include "precompiled.hpp"
    1.29 +#include "gc_implementation/shared/gcTimer.hpp"
    1.30 +#include "gc_implementation/shared/gcTraceTime.hpp"
    1.31 +#include "runtime/globals.hpp"
    1.32 +#include "runtime/os.hpp"
    1.33 +#include "runtime/safepoint.hpp"
    1.34 +#include "runtime/thread.inline.hpp"
    1.35 +#include "runtime/timer.hpp"
    1.36 +#include "utilities/ostream.hpp"
    1.37 +#include "utilities/ticks.inline.hpp"
    1.38 +
    1.39 +
    1.40 +GCTraceTime::GCTraceTime(const char* title, bool doit, bool print_cr, GCTimer* timer) :
    1.41 +    _title(title), _doit(doit), _print_cr(print_cr), _timer(timer), _start_counter() {
    1.42 +  if (_doit || _timer != NULL) {
    1.43 +    _start_counter.stamp();
    1.44 +  }
    1.45 +
    1.46 +  if (_timer != NULL) {
    1.47 +    assert(SafepointSynchronize::is_at_safepoint(), "Tracing currently only supported at safepoints");
    1.48 +    assert(Thread::current()->is_VM_thread(), "Tracing currently only supported from the VM thread");
    1.49 +
    1.50 +    _timer->register_gc_phase_start(title, _start_counter);
    1.51 +  }
    1.52 +
    1.53 +  if (_doit) {
    1.54 +    if (PrintGCTimeStamps) {
    1.55 +      gclog_or_tty->stamp();
    1.56 +      gclog_or_tty->print(": ");
    1.57 +    }
    1.58 +    gclog_or_tty->print("[%s", title);
    1.59 +    gclog_or_tty->flush();
    1.60 +  }
    1.61 +}
    1.62 +
    1.63 +GCTraceTime::~GCTraceTime() {
    1.64 +  Ticks stop_counter;
    1.65 +
    1.66 +  if (_doit || _timer != NULL) {
    1.67 +    stop_counter.stamp();
    1.68 +  }
    1.69 +
    1.70 +  if (_timer != NULL) {
    1.71 +    _timer->register_gc_phase_end(stop_counter);
    1.72 +  }
    1.73 +
    1.74 +  if (_doit) {
    1.75 +    const Tickspan duration = stop_counter - _start_counter;
    1.76 +    double duration_in_seconds = TicksToTimeHelper::seconds(duration);
    1.77 +    if (_print_cr) {
    1.78 +      gclog_or_tty->print_cr(", %3.7f secs]", duration_in_seconds);
    1.79 +    } else {
    1.80 +      gclog_or_tty->print(", %3.7f secs]", duration_in_seconds);
    1.81 +    }
    1.82 +    gclog_or_tty->flush();
    1.83 +  }
    1.84 +}