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src/share/vm/memory/referencePolicy.hpp@c760f78e0a53 (annotated)

src/share/vm/memory/referencePolicy.hpp

Wed, 01 Dec 2010 15:04:06 +0100

author

stefank

date

Wed, 01 Dec 2010 15:04:06 +0100

changeset 2325

c760f78e0a53

parent 2314

f95d63e2154a

child 3188

d1bdeef3e3e2

permissions

-rw-r--r--

7003125: precompiled.hpp is included when precompiled headers are not used
Summary: Added an ifndef DONT_USE_PRECOMPILED_HEADER to precompiled.hpp. Set up DONT_USE_PRECOMPILED_HEADER when compiling with Sun Studio or when the user specifies USE_PRECOMPILED_HEADER=0. Fixed broken include dependencies.
Reviewed-by: coleenp, kvn

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2000, 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_MEMORY_REFERENCEPOLICY_HPP
stefank@2314	26	#define SHARE_VM_MEMORY_REFERENCEPOLICY_HPP
stefank@2314	27
duke@435	28	// referencePolicy is used to determine when soft reference objects
duke@435	29	// should be cleared.
duke@435	30
duke@435	31
ysr@888	32	class ReferencePolicy : public CHeapObj {
duke@435	33	public:
duke@435	34	virtual bool should_clear_reference(oop p) { ShouldNotReachHere(); return true; }
ysr@888	35	// Capture state (of-the-VM) information needed to evaluate the policy
ysr@892	36	virtual void setup() { /* do nothing */ }
duke@435	37	};
duke@435	38
duke@435	39	class NeverClearPolicy : public ReferencePolicy {
duke@435	40	public:
duke@435	41	bool should_clear_reference(oop p) { return false; }
duke@435	42	};
duke@435	43
duke@435	44	class AlwaysClearPolicy : public ReferencePolicy {
duke@435	45	public:
duke@435	46	bool should_clear_reference(oop p) { return true; }
duke@435	47	};
duke@435	48
duke@435	49	class LRUCurrentHeapPolicy : public ReferencePolicy {
duke@435	50	private:
duke@435	51	jlong _max_interval;
duke@435	52
duke@435	53	public:
duke@435	54	LRUCurrentHeapPolicy();
duke@435	55
ysr@888	56	// Capture state (of-the-VM) information needed to evaluate the policy
ysr@892	57	void setup();
duke@435	58	bool should_clear_reference(oop p);
duke@435	59	};
duke@435	60
duke@435	61	class LRUMaxHeapPolicy : public ReferencePolicy {
duke@435	62	private:
duke@435	63	jlong _max_interval;
duke@435	64
duke@435	65	public:
duke@435	66	LRUMaxHeapPolicy();
duke@435	67
ysr@888	68	// Capture state (of-the-VM) information needed to evaluate the policy
ysr@892	69	void setup();
duke@435	70	bool should_clear_reference(oop p);
duke@435	71	};
stefank@2314	72
stefank@2314	73	#endif // SHARE_VM_MEMORY_REFERENCEPOLICY_HPP