src/share/vm/gc_implementation/shared/gcTraceTime.cpp

Thu, 13 Feb 2014 17:44:39 +0100

author
stefank
date
Thu, 13 Feb 2014 17:44:39 +0100
changeset 6971
7426d8d76305
parent 6904
0982ec23da03
child 7535
7ae4e26cb1e0
child 7612
f74dbdd45754
permissions
-rw-r--r--

8034761: Remove the do_code_roots parameter from process_strong_roots
Reviewed-by: tschatzl, mgerdin, jmasa

     1 /*
     2  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     4  *
     5  * This code is free software; you can redistribute it and/or modify it
     6  * under the terms of the GNU General Public License version 2 only, as
     7  * published by the Free Software Foundation.
     8  *
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    12  * version 2 for more details (a copy is included in the LICENSE file that
    13  * accompanied this code).
    14  *
    15  * You should have received a copy of the GNU General Public License version
    16  * 2 along with this work; if not, write to the Free Software Foundation,
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    18  *
    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    20  * or visit www.oracle.com if you need additional information or have any
    21  * questions.
    22  *
    23  */
    25 #include "precompiled.hpp"
    26 #include "gc_implementation/shared/gcTimer.hpp"
    27 #include "gc_implementation/shared/gcTrace.hpp"
    28 #include "gc_implementation/shared/gcTraceTime.hpp"
    29 #include "runtime/globals.hpp"
    30 #include "runtime/os.hpp"
    31 #include "runtime/safepoint.hpp"
    32 #include "runtime/thread.inline.hpp"
    33 #include "runtime/timer.hpp"
    34 #include "utilities/ostream.hpp"
    35 #include "utilities/ticks.inline.hpp"
    38 GCTraceTime::GCTraceTime(const char* title, bool doit, bool print_cr, GCTimer* timer, GCId gc_id) :
    39     _title(title), _doit(doit), _print_cr(print_cr), _timer(timer), _start_counter() {
    40   if (_doit || _timer != NULL) {
    41     _start_counter.stamp();
    42   }
    44   if (_timer != NULL) {
    45     assert(SafepointSynchronize::is_at_safepoint(), "Tracing currently only supported at safepoints");
    46     assert(Thread::current()->is_VM_thread(), "Tracing currently only supported from the VM thread");
    48     _timer->register_gc_phase_start(title, _start_counter);
    49   }
    51   if (_doit) {
    52     if (PrintGCTimeStamps) {
    53       gclog_or_tty->stamp();
    54       gclog_or_tty->print(": ");
    55     }
    56     if (PrintGCID) {
    57       gclog_or_tty->print("#%u: ", gc_id.id());
    58     }
    59     gclog_or_tty->print("[%s", title);
    60     gclog_or_tty->flush();
    61   }
    62 }
    64 GCTraceTime::~GCTraceTime() {
    65   Ticks stop_counter;
    67   if (_doit || _timer != NULL) {
    68     stop_counter.stamp();
    69   }
    71   if (_timer != NULL) {
    72     _timer->register_gc_phase_end(stop_counter);
    73   }
    75   if (_doit) {
    76     const Tickspan duration = stop_counter - _start_counter;
    77     double duration_in_seconds = TicksToTimeHelper::seconds(duration);
    78     if (_print_cr) {
    79       gclog_or_tty->print_cr(", %3.7f secs]", duration_in_seconds);
    80     } else {
    81       gclog_or_tty->print(", %3.7f secs]", duration_in_seconds);
    82     }
    83     gclog_or_tty->flush();
    84   }
    85 }

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