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src/share/vm/gc_implementation/shared/gcStats.hpp@b2ef234911c9 (annotated)

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

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

author

johnc

date

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

changeset 4067

b2ef234911c9

parent 3900

d2a62e0f25eb

child 4153

b9a9ed0f8eeb

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

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GCSTATS_HPP
stefank@2314	26	#define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCSTATS_HPP
stefank@2314	27
stefank@2314	28	#include "gc_implementation/shared/gcUtil.hpp"
stefank@2314	29
zgu@3900	30	class GCStats : public CHeapObj<mtGC> {
duke@435	31	protected:
duke@435	32	// Avg amount promoted; used for avoiding promotion undo
duke@435	33	// This class does not update deviations if the sample is zero.
duke@435	34	AdaptivePaddedNoZeroDevAverage* _avg_promoted;
duke@435	35
duke@435	36	public:
duke@435	37	GCStats();
duke@435	38
duke@435	39	enum Name {
duke@435	40	GCStatsKind,
duke@435	41	CMSGCStatsKind
duke@435	42	};
duke@435	43
duke@435	44	virtual Name kind() {
duke@435	45	return GCStatsKind;
duke@435	46	}
duke@435	47
duke@435	48	AdaptivePaddedNoZeroDevAverage* avg_promoted() const { return _avg_promoted; }
duke@435	49
duke@435	50	// Average in bytes
duke@435	51	size_t average_promoted_in_bytes() const {
duke@435	52	return (size_t)_avg_promoted->average();
duke@435	53	}
duke@435	54
duke@435	55	// Padded average in bytes
duke@435	56	size_t padded_average_promoted_in_bytes() const {
duke@435	57	return (size_t)_avg_promoted->padded_average();
duke@435	58	}
duke@435	59	};
duke@435	60
duke@435	61	class CMSGCStats : public GCStats {
duke@435	62	public:
duke@435	63	CMSGCStats();
duke@435	64
duke@435	65	virtual Name kind() {
duke@435	66	return CMSGCStatsKind;
duke@435	67	}
duke@435	68	};
stefank@2314	69
stefank@2314	70	#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCSTATS_HPP