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

src/share/vm/oops/instanceRefKlass.hpp@aed758eda82a (annotated)

src/share/vm/oops/instanceRefKlass.hpp

Fri, 07 Sep 2012 12:04:16 -0400

author

coleenp

date

Fri, 07 Sep 2012 12:04:16 -0400

changeset 4047

aed758eda82a

parent 4037

da91efe96a93

child 4542

db9981fd3124

permissions

-rw-r--r--

7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
Summary: Simple renaming to be consistent with instanceKlass->InstanceKlass renaming
Reviewed-by: stefank, jmasa

duke@435	1	/*
coleenp@4037	2	* Copyright (c) 1997, 2012, 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_OOPS_INSTANCEREFKLASS_HPP
stefank@2314	26	#define SHARE_VM_OOPS_INSTANCEREFKLASS_HPP
stefank@2314	27
stefank@2314	28	#include "oops/instanceKlass.hpp"
stefank@2314	29
coleenp@4047	30	// An InstanceRefKlass is a specialized InstanceKlass for Java
duke@435	31	// classes that are subclasses of java/lang/ref/Reference.
duke@435	32	//
duke@435	33	// These classes are used to implement soft/weak/final/phantom
duke@435	34	// references and finalization, and need special treatment by the
duke@435	35	// garbage collector.
duke@435	36	//
duke@435	37	// During GC discovered reference objects are added (chained) to one
duke@435	38	// of the four lists below, depending on the type of reference.
duke@435	39	// The linked occurs through the next field in class java/lang/ref/Reference.
duke@435	40	//
duke@435	41	// Afterwards, the discovered references are processed in decreasing
duke@435	42	// order of reachability. Reference objects eligible for notification
duke@435	43	// are linked to the static pending_list in class java/lang/ref/Reference,
duke@435	44	// and the pending list lock object in the same class is notified.
duke@435	45
duke@435	46
coleenp@4047	47	class InstanceRefKlass: public InstanceKlass {
coleenp@4037	48	friend class InstanceKlass;
coleenp@4037	49
coleenp@4037	50	// Constructor
coleenp@4047	51	InstanceRefKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous)
coleenp@4037	52	: InstanceKlass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, access_flags, is_anonymous) {}
coleenp@4037	53
duke@435	54	public:
coleenp@4047	55	InstanceRefKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
duke@435	56	// Type testing
duke@435	57	bool oop_is_instanceRef() const { return true; }
duke@435	58
coleenp@4037	59	// Casting from Klass*
coleenp@4047	60	static InstanceRefKlass* cast(Klass* k) {
coleenp@4047	61	assert(k->oop_is_instanceRef(), "cast to InstanceRefKlass");
coleenp@4047	62	return (InstanceRefKlass*) k;
duke@435	63	}
duke@435	64
duke@435	65	// Garbage collection
duke@435	66	int oop_adjust_pointers(oop obj);
duke@435	67	void oop_follow_contents(oop obj);
duke@435	68
duke@435	69	// Parallel Scavenge and Parallel Old
duke@435	70	PARALLEL_GC_DECLS
duke@435	71
coleenp@4037	72	int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) {
duke@435	73	return oop_oop_iterate_v(obj, blk);
duke@435	74	}
coleenp@4037	75	int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) {
duke@435	76	return oop_oop_iterate_v_m(obj, blk, mr);
duke@435	77	}
duke@435	78
duke@435	79	#define InstanceRefKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \
duke@435	80	int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \
duke@435	81	int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, MemRegion mr);
duke@435	82
duke@435	83	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_DECL)
ysr@777	84	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceRefKlass_OOP_OOP_ITERATE_DECL)
ysr@777	85
ysr@777	86	#ifndef SERIALGC
ysr@777	87	#define InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
ysr@777	88	int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk);
ysr@777	89
ysr@777	90	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
ysr@777	91	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceRefKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
ysr@777	92	#endif // !SERIALGC
duke@435	93
duke@435	94	static void release_and_notify_pending_list_lock(BasicLock *pending_list_basic_lock);
duke@435	95	static void acquire_pending_list_lock(BasicLock *pending_list_basic_lock);
coleenp@2363	96	static bool owns_pending_list_lock(JavaThread* thread);
duke@435	97
duke@435	98	// Update non-static oop maps so 'referent', 'nextPending' and
duke@435	99	// 'discovered' will look like non-oops
coleenp@4037	100	static void update_nonstatic_oop_maps(Klass* k);
duke@435	101
duke@435	102	public:
duke@435	103	// Verification
duke@435	104	void oop_verify_on(oop obj, outputStream* st);
duke@435	105	};
stefank@2314	106
stefank@2314	107	#endif // SHARE_VM_OOPS_INSTANCEREFKLASS_HPP