• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.cpp@710a3c8b516e (annotated)

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

Tue, 08 Aug 2017 15:57:29 +0800

author

aoqi

date

Tue, 08 Aug 2017 15:57:29 +0800

changeset 6876

710a3c8b516e

parent 6085

8f07aa079343

parent 0

f90c822e73f8

child 7535

7ae4e26cb1e0

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "precompiled.hpp"
aoqi@0	26	#include "gc_implementation/concurrentMarkSweep/cmsAdaptiveSizePolicy.hpp"
aoqi@0	27	#include "gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.hpp"
aoqi@0	28	#include "gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp"
aoqi@0	29	#include "gc_implementation/parNew/parNewGeneration.hpp"
aoqi@0	30	#include "gc_implementation/shared/gcPolicyCounters.hpp"
aoqi@0	31	#include "gc_implementation/shared/vmGCOperations.hpp"
aoqi@0	32	#include "memory/cardTableRS.hpp"
aoqi@0	33	#include "memory/collectorPolicy.hpp"
aoqi@0	34	#include "memory/gcLocker.inline.hpp"
aoqi@0	35	#include "memory/genCollectedHeap.hpp"
aoqi@0	36	#include "memory/generationSpec.hpp"
aoqi@0	37	#include "memory/space.hpp"
aoqi@0	38	#include "memory/universe.hpp"
aoqi@0	39	#include "runtime/arguments.hpp"
aoqi@0	40	#include "runtime/globals_extension.hpp"
aoqi@0	41	#include "runtime/handles.inline.hpp"
aoqi@0	42	#include "runtime/java.hpp"
aoqi@0	43	#include "runtime/thread.inline.hpp"
aoqi@0	44	#include "runtime/vmThread.hpp"
aoqi@0	45
aoqi@0	46	//
aoqi@0	47	// ConcurrentMarkSweepPolicy methods
aoqi@0	48	//
aoqi@0	49
aoqi@0	50	void ConcurrentMarkSweepPolicy::initialize_alignments() {
aoqi@0	51	_space_alignment = _gen_alignment = (uintx)Generation::GenGrain;
aoqi@0	52	_heap_alignment = compute_heap_alignment();
aoqi@0	53	}
aoqi@0	54
aoqi@0	55	void ConcurrentMarkSweepPolicy::initialize_generations() {
aoqi@0	56	_generations = NEW_C_HEAP_ARRAY3(GenerationSpecPtr, number_of_generations(), mtGC, 0, AllocFailStrategy::RETURN_NULL);
aoqi@0	57	if (_generations == NULL)
aoqi@0	58	vm_exit_during_initialization("Unable to allocate gen spec");
aoqi@0	59
aoqi@0	60	if (UseParNewGC) {
aoqi@0	61	if (UseAdaptiveSizePolicy) {
aoqi@0	62	_generations[0] = new GenerationSpec(Generation::ASParNew,
aoqi@0	63	_initial_gen0_size, _max_gen0_size);
aoqi@0	64	} else {
aoqi@0	65	_generations[0] = new GenerationSpec(Generation::ParNew,
aoqi@0	66	_initial_gen0_size, _max_gen0_size);
aoqi@0	67	}
aoqi@0	68	} else {
aoqi@0	69	_generations[0] = new GenerationSpec(Generation::DefNew,
aoqi@0	70	_initial_gen0_size, _max_gen0_size);
aoqi@0	71	}
aoqi@0	72	if (UseAdaptiveSizePolicy) {
aoqi@0	73	_generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep,
aoqi@0	74	_initial_gen1_size, _max_gen1_size);
aoqi@0	75	} else {
aoqi@0	76	_generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep,
aoqi@0	77	_initial_gen1_size, _max_gen1_size);
aoqi@0	78	}
aoqi@0	79
aoqi@0	80	if (_generations[0] == NULL || _generations[1] == NULL) {
aoqi@0	81	vm_exit_during_initialization("Unable to allocate gen spec");
aoqi@0	82	}
aoqi@0	83	}
aoqi@0	84
aoqi@0	85	void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size,
aoqi@0	86	size_t init_promo_size,
aoqi@0	87	size_t init_survivor_size) {
aoqi@0	88	double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0;
aoqi@0	89	double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0;
aoqi@0	90	_size_policy = new CMSAdaptiveSizePolicy(init_eden_size,
aoqi@0	91	init_promo_size,
aoqi@0	92	init_survivor_size,
aoqi@0	93	max_gc_minor_pause_sec,
aoqi@0	94	max_gc_pause_sec,
aoqi@0	95	GCTimeRatio);
aoqi@0	96	}
aoqi@0	97
aoqi@0	98	void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
aoqi@0	99	// initialize the policy counters - 2 collectors, 3 generations
aoqi@0	100	if (UseParNewGC) {
aoqi@0	101	_gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3);
aoqi@0	102	}
aoqi@0	103	else {
aoqi@0	104	_gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3);
aoqi@0	105	}
aoqi@0	106	}
aoqi@0	107
aoqi@0	108	// Returns true if the incremental mode is enabled.
aoqi@0	109	bool ConcurrentMarkSweepPolicy::has_soft_ended_eden()
aoqi@0	110	{
aoqi@0	111	return CMSIncrementalMode;
aoqi@0	112	}
aoqi@0	113
aoqi@0	114
aoqi@0	115	//
aoqi@0	116	// ASConcurrentMarkSweepPolicy methods
aoqi@0	117	//
aoqi@0	118
aoqi@0	119	void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {
aoqi@0	120
aoqi@0	121	assert(size_policy() != NULL, "A size policy is required");
aoqi@0	122	// initialize the policy counters - 2 collectors, 3 generations
aoqi@0	123	if (UseParNewGC) {
aoqi@0	124	_gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3,
aoqi@0	125	size_policy());
aoqi@0	126	}
aoqi@0	127	else {
aoqi@0	128	_gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3,
aoqi@0	129	size_policy());
aoqi@0	130	}
aoqi@0	131	}