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src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.hpp@da91efe96a93 (annotated)

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

Sat, 01 Sep 2012 13:25:18 -0400

author

coleenp

date

Sat, 01 Sep 2012 13:25:18 -0400

changeset 4037

da91efe96a93

parent 3900

d2a62e0f25eb

child 4153

b9a9ed0f8eeb

permissions

-rw-r--r--

6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2002, 2010, 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_GCTASKTHREAD_HPP
stefank@2314	26	#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GCTASKTHREAD_HPP
stefank@2314	27
stefank@2314	28	#include "runtime/thread.hpp"
stefank@2314	29
duke@435	30	// Forward declarations of classes defined here.
duke@435	31	class GCTaskThread;
duke@435	32	class GCTaskTimeStamp;
duke@435	33
duke@435	34	// Declarations of classes referenced in this file via pointer.
duke@435	35	class GCTaskManager;
duke@435	36
duke@435	37	class GCTaskThread : public WorkerThread {
jmasa@3294	38	friend class GCTaskManager;
duke@435	39	private:
duke@435	40	// Instance state.
duke@435	41	GCTaskManager* _manager; // Manager for worker.
duke@435	42	const uint _processor_id; // Which processor the worker is on.
duke@435	43
duke@435	44	GCTaskTimeStamp* _time_stamps;
duke@435	45	uint _time_stamp_index;
duke@435	46
duke@435	47	GCTaskTimeStamp* time_stamp_at(uint index);
duke@435	48
jmasa@3294	49	bool _is_working; // True if participating in GC tasks
jmasa@3294	50
duke@435	51	public:
duke@435	52	// Factory create and destroy methods.
duke@435	53	static GCTaskThread* create(GCTaskManager* manager,
duke@435	54	uint which,
duke@435	55	uint processor_id) {
duke@435	56	return new GCTaskThread(manager, which, processor_id);
duke@435	57	}
duke@435	58	static void destroy(GCTaskThread* manager) {
duke@435	59	if (manager != NULL) {
duke@435	60	delete manager;
duke@435	61	}
duke@435	62	}
duke@435	63	// Methods from Thread.
duke@435	64	bool is_GC_task_thread() const {
duke@435	65	return true;
duke@435	66	}
duke@435	67	virtual void run();
duke@435	68	// Methods.
duke@435	69	void start();
duke@435	70
duke@435	71	void print_task_time_stamps();
duke@435	72	void print_on(outputStream* st) const;
duke@435	73	void print() const { print_on(tty); }
duke@435	74
duke@435	75	protected:
duke@435	76	// Constructor. Clients use factory, but there could be subclasses.
duke@435	77	GCTaskThread(GCTaskManager* manager, uint which, uint processor_id);
duke@435	78	// Destructor: virtual destructor because of virtual methods.
duke@435	79	virtual ~GCTaskThread();
duke@435	80	// Accessors.
duke@435	81	GCTaskManager* manager() const {
duke@435	82	return _manager;
duke@435	83	}
duke@435	84	uint which() const {
duke@435	85	return id();
duke@435	86	}
duke@435	87	uint processor_id() const {
duke@435	88	return _processor_id;
duke@435	89	}
jmasa@3294	90	void set_is_working(bool v) { _is_working = v; }
duke@435	91	};
duke@435	92
zgu@3900	93	class GCTaskTimeStamp : public CHeapObj<mtGC>
duke@435	94	{
duke@435	95	private:
duke@435	96	jlong _entry_time;
duke@435	97	jlong _exit_time;
duke@435	98	char* _name;
duke@435	99
duke@435	100	public:
duke@435	101	jlong entry_time() { return _entry_time; }
duke@435	102	jlong exit_time() { return _exit_time; }
duke@435	103	const char* name() const { return (const char*)_name; }
duke@435	104
duke@435	105	void set_entry_time(jlong time) { _entry_time = time; }
duke@435	106	void set_exit_time(jlong time) { _exit_time = time; }
duke@435	107	void set_name(char* name) { _name = name; }
duke@435	108	};
stefank@2314	109
stefank@2314	110	#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_GCTASKTHREAD_HPP