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src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.hpp@0bfd3fb24150 (annotated)

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

Tue, 13 Apr 2010 13:52:10 -0700

author

jmasa

date

Tue, 13 Apr 2010 13:52:10 -0700

changeset 1822

0bfd3fb24150

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
Summary: Ensure a full GC that clears SoftReferences before throwing an out-of-memory
Reviewed-by: ysr, jcoomes

duke@435	1	/*
jmasa@1822	2	* Copyright 2007-2010 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	class ConcurrentMarkSweepPolicy : public TwoGenerationCollectorPolicy {
duke@435	26	protected:
duke@435	27	void initialize_generations();
duke@435	28
duke@435	29	public:
duke@435	30	ConcurrentMarkSweepPolicy();
duke@435	31
duke@435	32	ConcurrentMarkSweepPolicy* as_concurrent_mark_sweep_policy() { return this; }
duke@435	33
duke@435	34	void initialize_gc_policy_counters();
jmasa@1822	35
duke@435	36	virtual void initialize_size_policy(size_t init_eden_size,
duke@435	37	size_t init_promo_size,
duke@435	38	size_t init_survivor_size);
duke@435	39
duke@435	40	// Returns true if the incremental mode is enabled.
duke@435	41	virtual bool has_soft_ended_eden();
duke@435	42	};
duke@435	43
duke@435	44	class ASConcurrentMarkSweepPolicy : public ConcurrentMarkSweepPolicy {
duke@435	45	public:
duke@435	46
duke@435	47	// Initialize the jstat counters. This method requires a
duke@435	48	// size policy. The size policy is expected to be created
duke@435	49	// after the generations are fully initialized so the
duke@435	50	// initialization of the counters need to be done post
duke@435	51	// the initialization of the generations.
duke@435	52	void initialize_gc_policy_counters();
duke@435	53
duke@435	54	virtual CollectorPolicy::Name kind() {
duke@435	55	return CollectorPolicy::ASConcurrentMarkSweepPolicyKind;
duke@435	56	}
duke@435	57	};