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

Thu, 20 Sep 2012 09:52:56 -0700

author
johnc
date
Thu, 20 Sep 2012 09:52:56 -0700
changeset 4067
b2ef234911c9
parent 2314
f95d63e2154a
child 4336
db8a7163c682
permissions
-rw-r--r--

7190666: G1: assert(_unused == 0) failed: Inconsistency in PLAB stats
Summary: Reset the fields in ParGCAllocBuffer, that are used for accumulating values for the ResizePLAB sensors in PLABStats, to zero after flushing the values to the PLABStats fields. Flush PLABStats values only when retiring the final allocation buffers prior to disposing of a G1ParScanThreadState object, rather than when retiring every allocation buffer.
Reviewed-by: jwilhelm, jmasa, ysr

     1 /*
     2  * Copyright (c) 2003, 2010, 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/gcStats.hpp"
    27 #include "gc_implementation/shared/gcUtil.hpp"
    29 GCStats::GCStats() {
    30     _avg_promoted       = new AdaptivePaddedNoZeroDevAverage(
    31                                                   AdaptiveSizePolicyWeight,
    32                                                   PromotedPadding);
    33 }
    35 CMSGCStats::CMSGCStats() {
    36     _avg_promoted       = new AdaptivePaddedNoZeroDevAverage(
    37                                                   CMSExpAvgFactor,
    38                                                   PromotedPadding);
    39 }

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