1 /*

     2  * Copyright (c) 2005, 2015, 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  */

    24 

    25 #include "precompiled.hpp"

    26 #include "gc/cms/allocationStats.hpp"

    27 #include "utilities/macros.hpp"

    28 #include "utilities/ostream.hpp"

    29 

    30 // Technically this should be derived from machine speed, and

    31 // ideally it would be dynamically adjusted.

    32 float AllocationStats::_threshold = ((float)CMS_SweepTimerThresholdMillis)/1000;

    33 

    34 void AllocationStats::initialize(bool split_birth)   {

    35   AdaptivePaddedAverage* dummy =

    36     new (&_demand_rate_estimate) AdaptivePaddedAverage(CMS_FLSWeight,

    37                                                        CMS_FLSPadding);

    38   _desired = 0;

    39   _coal_desired = 0;

    40   _surplus = 0;

    41   _bfr_surp = 0;

    42   _prev_sweep = 0;

    43   _before_sweep = 0;

    44   _coal_births = 0;

    45   _coal_deaths = 0;

    46   _split_births = (split_birth ? 1 : 0);

    47   _split_deaths = 0;

    48   _returned_bytes = 0;

    49 }