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src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.cpp@4947ee68d19c (annotated)

src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.cpp

Thu, 06 Jan 2011 23:50:02 -0800

author

ysr

date

Thu, 06 Jan 2011 23:50:02 -0800

changeset 2452

4947ee68d19c

parent 2314

f95d63e2154a

child 3156

f08d439fab8c

permissions

-rw-r--r--

7008136: CMS: assert((HeapWord*)nextChunk <= _limit) failed: sweep invariant
Summary: The recorded _sweep_limit may not necessarily remain a block boundary as the old generation expands during a concurrent cycle. Terminal actions inside the sweep closure need to be aware of this as they cross over the limit.
Reviewed-by: johnc, minqi

duke@435	1	/*
jmasa@2188	2	* Copyright (c) 2007, 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	#include "precompiled.hpp"
stefank@2314	26	#include "gc_implementation/concurrentMarkSweep/cmsAdaptiveSizePolicy.hpp"
stefank@2314	27	#include "gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.hpp"
stefank@2314	28	#include "gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp"
stefank@2314	29	#include "gc_implementation/parNew/parNewGeneration.hpp"
stefank@2314	30	#include "gc_implementation/shared/gcPolicyCounters.hpp"
stefank@2314	31	#include "gc_implementation/shared/vmGCOperations.hpp"
stefank@2314	32	#include "memory/cardTableRS.hpp"
stefank@2314	33	#include "memory/collectorPolicy.hpp"
stefank@2314	34	#include "memory/gcLocker.inline.hpp"
stefank@2314	35	#include "memory/genCollectedHeap.hpp"
stefank@2314	36	#include "memory/generationSpec.hpp"
stefank@2314	37	#include "memory/space.hpp"
stefank@2314	38	#include "memory/universe.hpp"
stefank@2314	39	#include "runtime/arguments.hpp"
stefank@2314	40	#include "runtime/globals_extension.hpp"
stefank@2314	41	#include "runtime/handles.inline.hpp"
stefank@2314	42	#include "runtime/java.hpp"
stefank@2314	43	#include "runtime/vmThread.hpp"
stefank@2314	44	#ifdef TARGET_OS_FAMILY_linux
stefank@2314	45	# include "thread_linux.inline.hpp"
stefank@2314	46	#endif
stefank@2314	47	#ifdef TARGET_OS_FAMILY_solaris
stefank@2314	48	# include "thread_solaris.inline.hpp"
stefank@2314	49	#endif
stefank@2314	50	#ifdef TARGET_OS_FAMILY_windows
stefank@2314	51	# include "thread_windows.inline.hpp"
stefank@2314	52	#endif
duke@435	53
duke@435	54	//
duke@435	55	// ConcurrentMarkSweepPolicy methods
duke@435	56	//
duke@435	57
duke@435	58	ConcurrentMarkSweepPolicy::ConcurrentMarkSweepPolicy() {
duke@435	59	initialize_all();
duke@435	60	}
duke@435	61
duke@435	62	void ConcurrentMarkSweepPolicy::initialize_generations() {
duke@435	63	initialize_perm_generation(PermGen::ConcurrentMarkSweep);
duke@435	64	_generations = new GenerationSpecPtr[number_of_generations()];
duke@435	65	if (_generations == NULL)
duke@435	66	vm_exit_during_initialization("Unable to allocate gen spec");
duke@435	67
jmasa@2188	68	if (ParNewGeneration::in_use()) {
duke@435	69	if (UseAdaptiveSizePolicy) {
duke@435	70	_generations[0] = new GenerationSpec(Generation::ASParNew,
duke@435	71	_initial_gen0_size, _max_gen0_size);
duke@435	72	} else {
duke@435	73	_generations[0] = new GenerationSpec(Generation::ParNew,
duke@435	74	_initial_gen0_size, _max_gen0_size);
duke@435	75	}
duke@435	76	} else {
duke@435	77	_generations[0] = new GenerationSpec(Generation::DefNew,
duke@435	78	_initial_gen0_size, _max_gen0_size);
duke@435	79	}
duke@435	80	if (UseAdaptiveSizePolicy) {
duke@435	81	_generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep,
duke@435	82	_initial_gen1_size, _max_gen1_size);
duke@435	83	} else {
duke@435	84	_generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep,
duke@435	85	_initial_gen1_size, _max_gen1_size);
duke@435	86	}
duke@435	87
duke@435	88	if (_generations[0] == NULL || _generations[1] == NULL) {
duke@435	89	vm_exit_during_initialization("Unable to allocate gen spec");
duke@435	90	}
duke@435	91	}
duke@435	92
duke@435	93	void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size,
duke@435	94	size_t init_promo_size,
duke@435	95	size_t init_survivor_size) {
duke@435	96	double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0;
duke@435	97	double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0;
duke@435	98	_size_policy = new CMSAdaptiveSizePolicy(init_eden_size,
duke@435	99	init_promo_size,
duke@435	100	init_survivor_size,
duke@435	101	max_gc_minor_pause_sec,
duke@435	102	max_gc_pause_sec,
duke@435	103	GCTimeRatio);
duke@435	104	}
duke@435	105
duke@435	106	void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
duke@435	107	// initialize the policy counters - 2 collectors, 3 generations
jmasa@2188	108	if (ParNewGeneration::in_use()) {
duke@435	109	_gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3);
duke@435	110	}
duke@435	111	else {
duke@435	112	_gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3);
duke@435	113	}
duke@435	114	}
duke@435	115
duke@435	116	// Returns true if the incremental mode is enabled.
duke@435	117	bool ConcurrentMarkSweepPolicy::has_soft_ended_eden()
duke@435	118	{
duke@435	119	return CMSIncrementalMode;
duke@435	120	}
duke@435	121
duke@435	122
duke@435	123	//
duke@435	124	// ASConcurrentMarkSweepPolicy methods
duke@435	125	//
duke@435	126
duke@435	127	void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
duke@435	128
duke@435	129	assert(size_policy() != NULL, "A size policy is required");
duke@435	130	// initialize the policy counters - 2 collectors, 3 generations
jmasa@2188	131	if (ParNewGeneration::in_use()) {
duke@435	132	_gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3,
duke@435	133	size_policy());
duke@435	134	}
duke@435	135	else {
duke@435	136	_gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3,
duke@435	137	size_policy());
duke@435	138	}
duke@435	139	}