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src/share/vm/gc_implementation/g1/concurrentMarkThread.hpp@830ca2573896 (annotated)

src/share/vm/gc_implementation/g1/concurrentMarkThread.hpp

Fri, 12 Jun 2009 16:20:16 -0400

author

tonyp

date

Fri, 12 Jun 2009 16:20:16 -0400

changeset 1246

830ca2573896

parent 1229

315a5d70b295

child 1279

bd02caa94611

permissions

-rw-r--r--

6850846: G1: extend G1 marking verification
Summary: extend G1 marking verification to use either the "prev" or "next" marking information, as appropriate.
Reviewed-by: johnc, ysr

ysr@777	1	/*
ysr@777	2	* Copyright 2001-2007 Sun Microsystems, Inc. All Rights Reserved.
ysr@777	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ysr@777	4	*
ysr@777	5	* This code is free software; you can redistribute it and/or modify it
ysr@777	6	* under the terms of the GNU General Public License version 2 only, as
ysr@777	7	* published by the Free Software Foundation.
ysr@777	8	*
ysr@777	9	* This code is distributed in the hope that it will be useful, but WITHOUT
ysr@777	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ysr@777	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
ysr@777	12	* version 2 for more details (a copy is included in the LICENSE file that
ysr@777	13	* accompanied this code).
ysr@777	14	*
ysr@777	15	* You should have received a copy of the GNU General Public License version
ysr@777	16	* 2 along with this work; if not, write to the Free Software Foundation,
ysr@777	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ysr@777	18	*
ysr@777	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
ysr@777	20	* CA 95054 USA or visit www.sun.com if you need additional information or
ysr@777	21	* have any questions.
ysr@777	22	*
ysr@777	23	*/
ysr@777	24
ysr@777	25	// The Concurrent Mark GC Thread (could be several in the future).
ysr@777	26	// This is copied from the Concurrent Mark Sweep GC Thread
ysr@777	27	// Still under construction.
ysr@777	28
ysr@777	29	class ConcurrentMark;
ysr@777	30
ysr@777	31	class ConcurrentMarkThread: public ConcurrentGCThread {
ysr@777	32	friend class VMStructs;
ysr@777	33
ysr@777	34	double _vtime_start; // Initial virtual time.
ysr@777	35	double _vtime_accum; // Accumulated virtual time.
ysr@777	36
ysr@777	37	double _vtime_mark_accum;
ysr@777	38	double _vtime_count_accum;
ysr@777	39
ysr@777	40	public:
ysr@777	41	virtual void run();
ysr@777	42
ysr@777	43	private:
ysr@777	44	ConcurrentMark* _cm;
ysr@777	45	bool _started;
ysr@777	46	bool _in_progress;
ysr@777	47
ysr@777	48	void sleepBeforeNextCycle();
ysr@777	49
ysr@777	50	static SurrogateLockerThread* _slt;
ysr@777	51
ysr@777	52	public:
ysr@777	53	// Constructor
ysr@777	54	ConcurrentMarkThread(ConcurrentMark* cm);
ysr@777	55
ysr@777	56	static void makeSurrogateLockerThread(TRAPS);
ysr@777	57	static SurrogateLockerThread* slt() { return _slt; }
ysr@777	58
ysr@777	59	// Printing
ysr@777	60	void print();
ysr@777	61
ysr@777	62	// Total virtual time so far.
ysr@777	63	double vtime_accum();
ysr@777	64	// Marking virtual time so far
ysr@777	65	double vtime_mark_accum();
ysr@777	66	// Counting virtual time so far.
ysr@777	67	double vtime_count_accum() { return _vtime_count_accum; }
ysr@777	68
ysr@777	69	ConcurrentMark* cm() { return _cm; }
ysr@777	70
ysr@777	71	void set_started() { _started = true; }
ysr@777	72	void clear_started() { _started = false; }
ysr@777	73	bool started() { return _started; }
ysr@777	74
ysr@777	75	void set_in_progress() { _in_progress = true; }
ysr@777	76	void clear_in_progress() { _in_progress = false; }
ysr@777	77	bool in_progress() { return _in_progress; }
ysr@777	78
ysr@777	79	// Yield for GC
ysr@777	80	void yield();
ysr@777	81
ysr@777	82	// shutdown
iveresov@1229	83	void stop();
ysr@777	84	};