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

src/share/vm/gc_implementation/parallelScavenge/asPSOldGen.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 2003 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 ASPSOldGen : public PSOldGen {
duke@435	26	friend class VMStructs;
duke@435	27	size_t _gen_size_limit; // Largest size the generation's reserved size
duke@435	28	// can grow.
duke@435	29	public:
duke@435	30	ASPSOldGen(size_t initial_byte_size,
duke@435	31	size_t minimum_byte_size,
duke@435	32	size_t byte_size_limit,
duke@435	33	const char* gen_name, int level);
duke@435	34	ASPSOldGen(PSVirtualSpace* vs,
duke@435	35	size_t initial_byte_size,
duke@435	36	size_t minimum_byte_size,
duke@435	37	size_t byte_size_limit,
duke@435	38	const char* gen_name, int level);
duke@435	39	size_t gen_size_limit() { return _gen_size_limit; }
duke@435	40	size_t max_gen_size() { return _reserved.byte_size(); }
duke@435	41	void set_gen_size_limit(size_t v) { _gen_size_limit = v; }
duke@435	42
duke@435	43	// After a shrink or expand reset the generation
duke@435	44	void reset_after_change();
duke@435	45
duke@435	46	// Return number of bytes that the virtual space in the generation is willing
duke@435	47	// to expand or contract. The results from these methods should feed into the
duke@435	48	// decisions about adjusting the virtual space.
duke@435	49	size_t available_for_expansion();
duke@435	50	size_t available_for_contraction();
duke@435	51
duke@435	52	// Accessors
duke@435	53	void set_reserved(MemRegion v) { _reserved = v; }
duke@435	54
duke@435	55	// Debugging support
duke@435	56	virtual const char* short_name() const { return "ASPSOldGen"; }
duke@435	57	};