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src/share/vm/gc_implementation/parallelScavenge/psMarkSweep.hpp@850fdf70db2b (annotated)

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

Mon, 28 Jul 2008 15:30:23 -0700

author

jmasa

date

Mon, 28 Jul 2008 15:30:23 -0700

changeset 704

850fdf70db2b

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

Merge

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