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src/share/vm/gc_implementation/parallelScavenge/psPermGen.hpp@0f773163217d (annotated)

src/share/vm/gc_implementation/parallelScavenge/psPermGen.hpp

Thu, 11 Dec 2008 12:05:21 -0800

author

jcoomes

date

Thu, 11 Dec 2008 12:05:21 -0800

changeset 918

0f773163217d

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6765954: par compact - stress mode for splitting young gen spaces
Reviewed-by: jmasa

duke@435	1	/*
duke@435	2	* Copyright 2001-2005 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 AdaptivePaddedAverage;
duke@435	26
duke@435	27	class PSPermGen : public PSOldGen {
duke@435	28	friend class VMStructs;
duke@435	29	protected:
duke@435	30	AdaptivePaddedAverage* _avg_size; // Used for sizing
duke@435	31	size_t _last_used; // Amount used at last GC, used for sizing
duke@435	32
duke@435	33	public:
duke@435	34	// Initialize the generation.
duke@435	35	PSPermGen(ReservedSpace rs, size_t alignment, size_t initial_byte_size,
duke@435	36	size_t minimum_byte_size, size_t maximum_byte_size,
duke@435	37	const char* gen_name, int level);
duke@435	38
duke@435	39	// Permanent Gen special allocation. Uses the OldGen allocation
duke@435	40	// routines, which should not be directly called on this generation.
duke@435	41	HeapWord* allocate_permanent(size_t word_size);
duke@435	42
duke@435	43	// Size calculation.
duke@435	44	void compute_new_size(size_t used_before_collection);
duke@435	45
duke@435	46	// MarkSweep code
duke@435	47	virtual void precompact();
duke@435	48
duke@435	49	// Parallel old
duke@435	50	virtual void move_and_update(ParCompactionManager* cm);
duke@435	51
duke@435	52	virtual const char* name() const { return "PSPermGen"; }
duke@435	53	};