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src/share/vm/gc_implementation/parallelScavenge/generationSizer.hpp@001ec9515f84 (annotated)

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

Fri, 17 May 2013 11:57:05 +0200

author

ehelin

date

Fri, 17 May 2013 11:57:05 +0200

changeset 5159

001ec9515f84

parent 4037

da91efe96a93

child 5706

9e11762cee52

permissions

-rw-r--r--

8014277: Remove ObjectClosure as base class for BoolObjectClosure
Reviewed-by: brutisso, tschatzl

duke@435	1	/*
coleenp@4037	2	* Copyright (c) 2001, 2012, 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_PARALLELSCAVENGE_GENERATIONSIZER_HPP
stefank@2314	26	#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GENERATIONSIZER_HPP
stefank@2314	27
stefank@2314	28	#include "memory/collectorPolicy.hpp"
stefank@2314	29
duke@435	30	// There is a nice batch of tested generation sizing code in
duke@435	31	// TwoGenerationCollectorPolicy. Lets reuse it!
duke@435	32
duke@435	33	class GenerationSizer : public TwoGenerationCollectorPolicy {
duke@435	34	public:
duke@435	35	GenerationSizer() {
duke@435	36	// Partial init only!
duke@435	37	initialize_flags();
duke@435	38	initialize_size_info();
duke@435	39	}
duke@435	40
duke@435	41	void initialize_flags() {
duke@435	42	// Do basic sizing work
duke@435	43	this->TwoGenerationCollectorPolicy::initialize_flags();
duke@435	44
duke@435	45	// If the user hasn't explicitly set the number of worker
duke@435	46	// threads, set the count.
jmasa@445	47	assert(UseSerialGC ||
jmasa@445	48	!FLAG_IS_DEFAULT(ParallelGCThreads) ||
jmasa@445	49	(ParallelGCThreads > 0),
jmasa@445	50	"ParallelGCThreads should be set before flag initialization");
duke@435	51
duke@435	52	// The survivor ratio's are calculated "raw", unlike the
duke@435	53	// default gc, which adds 2 to the ratio value. We need to
duke@435	54	// make sure the values are valid before using them.
duke@435	55	if (MinSurvivorRatio < 3) {
duke@435	56	MinSurvivorRatio = 3;
duke@435	57	}
duke@435	58
duke@435	59	if (InitialSurvivorRatio < 3) {
duke@435	60	InitialSurvivorRatio = 3;
duke@435	61	}
duke@435	62	}
duke@435	63
duke@435	64	size_t min_young_gen_size() { return _min_gen0_size; }
duke@435	65	size_t young_gen_size() { return _initial_gen0_size; }
duke@435	66	size_t max_young_gen_size() { return _max_gen0_size; }
duke@435	67
duke@435	68	size_t min_old_gen_size() { return _min_gen1_size; }
duke@435	69	size_t old_gen_size() { return _initial_gen1_size; }
duke@435	70	size_t max_old_gen_size() { return _max_gen1_size; }
duke@435	71
coleenp@4037	72	size_t metaspace_size() { return MetaspaceSize; }
coleenp@4037	73	size_t max_metaspace_size() { return MaxMetaspaceSize; }
duke@435	74	};
stefank@2314	75
stefank@2314	76	#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GENERATIONSIZER_HPP