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

src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.hpp@2c6ef90f030a (annotated)

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

Mon, 07 Jul 2014 10:12:40 +0200

author

stefank

date

Mon, 07 Jul 2014 10:12:40 +0200

changeset 6992

2c6ef90f030a

parent 6198

55fb97c4c58d

child 7535

7ae4e26cb1e0

permissions

-rw-r--r--

8049421: G1 Class Unloading after completing a concurrent mark cycle
Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
Contributed-by: stefan.karlsson@oracle.com, mikael.gerdin@oracle.com

duke@435	1	/*
mikael@6198	2	* Copyright (c) 2001, 2013, 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_PSMARKSWEEP_HPP
stefank@2314	26	#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP
stefank@2314	27
stefank@2314	28	#include "gc_implementation/shared/collectorCounters.hpp"
stefank@2314	29	#include "gc_implementation/shared/markSweep.inline.hpp"
stefank@2314	30	#include "utilities/stack.hpp"
stefank@2314	31
duke@435	32	class PSAdaptiveSizePolicy;
duke@435	33	class PSYoungGen;
duke@435	34	class PSOldGen;
duke@435	35
duke@435	36	class PSMarkSweep : public MarkSweep {
duke@435	37	private:
duke@435	38	static elapsedTimer _accumulated_time;
duke@435	39	static jlong _time_of_last_gc; // ms
duke@435	40	static CollectorCounters* _counters;
duke@435	41
duke@435	42	// Closure accessors
stefank@6992	43	static OopClosure* mark_and_push_closure() { return &MarkSweep::mark_and_push_closure; }
stefank@6992	44	static VoidClosure* follow_stack_closure() { return (VoidClosure*)&MarkSweep::follow_stack_closure; }
stefank@6992	45	static CLDClosure* follow_cld_closure() { return &MarkSweep::follow_cld_closure; }
stefank@6992	46	static OopClosure* adjust_pointer_closure() { return (OopClosure*)&MarkSweep::adjust_pointer_closure; }
stefank@6992	47	static CLDClosure* adjust_cld_closure() { return &MarkSweep::adjust_cld_closure; }
duke@435	48	static BoolObjectClosure* is_alive_closure() { return (BoolObjectClosure*)&MarkSweep::is_alive; }
duke@435	49
duke@435	50	debug_only(public:) // Used for PSParallelCompact debugging
duke@435	51	// Mark live objects
duke@435	52	static void mark_sweep_phase1(bool clear_all_softrefs);
duke@435	53	// Calculate new addresses
duke@435	54	static void mark_sweep_phase2();
duke@435	55	debug_only(private:) // End used for PSParallelCompact debugging
duke@435	56	// Update pointers
duke@435	57	static void mark_sweep_phase3();
duke@435	58	// Move objects to new positions
duke@435	59	static void mark_sweep_phase4();
duke@435	60
duke@435	61	debug_only(public:) // Used for PSParallelCompact debugging
duke@435	62	// Temporary data structures for traversal and storing/restoring marks
duke@435	63	static void allocate_stacks();
duke@435	64	static void deallocate_stacks();
duke@435	65	static void set_ref_processor(ReferenceProcessor* rp) { // delete this method
duke@435	66	_ref_processor = rp;
duke@435	67	}
duke@435	68	debug_only(private:) // End used for PSParallelCompact debugging
duke@435	69
duke@435	70	// If objects are left in eden after a collection, try to move the boundary
duke@435	71	// and absorb them into the old gen. Returns true if eden was emptied.
duke@435	72	static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy,
duke@435	73	PSYoungGen* young_gen,
duke@435	74	PSOldGen* old_gen);
duke@435	75
duke@435	76	// Reset time since last full gc
duke@435	77	static void reset_millis_since_last_gc();
duke@435	78
duke@435	79	public:
duke@435	80	static void invoke(bool clear_all_softrefs);
jcoomes@3540	81	static bool invoke_no_policy(bool clear_all_softrefs);
duke@435	82
duke@435	83	static void initialize();
duke@435	84
duke@435	85	// Public accessors
duke@435	86	static elapsedTimer* accumulated_time() { return &_accumulated_time; }
duke@435	87	static CollectorCounters* counters() { return _counters; }
duke@435	88
duke@435	89	// Time since last full gc (in milliseconds)
duke@435	90	static jlong millis_since_last_gc();
duke@435	91	};
stefank@2314	92
stefank@2314	93	#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP