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src/share/vm/oops/instanceClassLoaderKlass.cpp@f90c822e73f8 (annotated)

src/share/vm/oops/instanceClassLoaderKlass.cpp

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#include "precompiled.hpp"
aoqi@0	26	#include "classfile/javaClasses.hpp"
aoqi@0	27	#include "classfile/systemDictionary.hpp"
aoqi@0	28	#include "gc_implementation/shared/markSweep.inline.hpp"
aoqi@0	29	#include "gc_interface/collectedHeap.inline.hpp"
aoqi@0	30	#include "memory/genOopClosures.inline.hpp"
aoqi@0	31	#include "memory/oopFactory.hpp"
aoqi@0	32	#include "oops/instanceKlass.hpp"
aoqi@0	33	#include "oops/instanceClassLoaderKlass.hpp"
aoqi@0	34	#include "oops/instanceMirrorKlass.hpp"
aoqi@0	35	#include "oops/instanceOop.hpp"
aoqi@0	36	#include "oops/oop.inline.hpp"
aoqi@0	37	#include "oops/symbol.hpp"
aoqi@0	38	#include "runtime/handles.inline.hpp"
aoqi@0	39	#include "utilities/macros.hpp"
aoqi@0	40	#if INCLUDE_ALL_GCS
aoqi@0	41	#include "gc_implementation/parNew/parOopClosures.inline.hpp"
aoqi@0	42	#include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
aoqi@0	43	#include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
aoqi@0	44	#include "oops/oop.pcgc.inline.hpp"
aoqi@0	45	#endif // INCLUDE_ALL_GCS
aoqi@0	46
aoqi@0	47	#define if_do_metadata_checked(closure, nv_suffix) \
aoqi@0	48	/* Make sure the non-virtual and the virtual versions match. */ \
aoqi@0	49	assert(closure->do_metadata##nv_suffix() == closure->do_metadata(), \
aoqi@0	50	"Inconsistency in do_metadata"); \
aoqi@0	51	if (closure->do_metadata##nv_suffix())
aoqi@0	52
aoqi@0	53	// Macro to define InstanceClassLoaderKlass::oop_oop_iterate for virtual/nonvirtual for
aoqi@0	54	// all closures. Macros calling macros above for each oop size.
aoqi@0	55	// Since ClassLoader objects have only a pointer to the loader_data, they are not
aoqi@0	56	// compressed nor does the pointer move.
aoqi@0	57
aoqi@0	58	#define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)\
aoqi@0	59	\
aoqi@0	60	int InstanceClassLoaderKlass:: \
aoqi@0	61	oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \
aoqi@0	62	/* Get size before changing pointers */ \
aoqi@0	63	SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
aoqi@0	64	int size = InstanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \
aoqi@0	65	\
aoqi@0	66	if_do_metadata_checked(closure, nv_suffix) { \
aoqi@0	67	ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \
aoqi@0	68	/* cld can be null if we have a non-registered class loader. */ \
aoqi@0	69	if (cld != NULL) { \
aoqi@0	70	closure->do_class_loader_data(cld); \
aoqi@0	71	} \
aoqi@0	72	} \
aoqi@0	73	\
aoqi@0	74	return size; \
aoqi@0	75	}
aoqi@0	76
aoqi@0	77	#if INCLUDE_ALL_GCS
aoqi@0	78	#define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
aoqi@0	79	\
aoqi@0	80	int InstanceClassLoaderKlass:: \
aoqi@0	81	oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \
aoqi@0	82	/* Get size before changing pointers */ \
aoqi@0	83	SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
aoqi@0	84	int size = InstanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \
aoqi@0	85	return size; \
aoqi@0	86	}
aoqi@0	87	#endif // INCLUDE_ALL_GCS
aoqi@0	88
aoqi@0	89
aoqi@0	90	#define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
aoqi@0	91	\
aoqi@0	92	int InstanceClassLoaderKlass:: \
aoqi@0	93	oop_oop_iterate##nv_suffix##_m(oop obj, \
aoqi@0	94	OopClosureType* closure, \
aoqi@0	95	MemRegion mr) { \
aoqi@0	96	SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
aoqi@0	97	\
aoqi@0	98	int size = InstanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \
aoqi@0	99	\
aoqi@0	100	if_do_metadata_checked(closure, nv_suffix) { \
aoqi@0	101	if (mr.contains(obj)) { \
aoqi@0	102	ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \
aoqi@0	103	/* cld can be null if we have a non-registered class loader. */ \
aoqi@0	104	if (cld != NULL) { \
aoqi@0	105	closure->do_class_loader_data(cld); \
aoqi@0	106	} \
aoqi@0	107	} \
aoqi@0	108	} \
aoqi@0	109	\
aoqi@0	110	return size; \
aoqi@0	111	}
aoqi@0	112
aoqi@0	113	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
aoqi@0	114	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
aoqi@0	115	#if INCLUDE_ALL_GCS
aoqi@0	116	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
aoqi@0	117	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
aoqi@0	118	#endif // INCLUDE_ALL_GCS
aoqi@0	119	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
aoqi@0	120	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
aoqi@0	121
aoqi@0	122	void InstanceClassLoaderKlass::oop_follow_contents(oop obj) {
aoqi@0	123	InstanceKlass::oop_follow_contents(obj);
aoqi@0	124	ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
aoqi@0	125
aoqi@0	126	// We must NULL check here, since the class loader
aoqi@0	127	// can be found before the loader data has been set up.
aoqi@0	128	if(loader_data != NULL) {
aoqi@0	129	MarkSweep::follow_class_loader(loader_data);
aoqi@0	130	}
aoqi@0	131	}
aoqi@0	132
aoqi@0	133	#if INCLUDE_ALL_GCS
aoqi@0	134	void InstanceClassLoaderKlass::oop_follow_contents(ParCompactionManager* cm,
aoqi@0	135	oop obj) {
aoqi@0	136	InstanceKlass::oop_follow_contents(cm, obj);
aoqi@0	137	ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
aoqi@0	138	if (loader_data != NULL) {
aoqi@0	139	PSParallelCompact::follow_class_loader(cm, loader_data);
aoqi@0	140	}
aoqi@0	141	}
aoqi@0	142
aoqi@0	143	void InstanceClassLoaderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
aoqi@0	144	InstanceKlass::oop_push_contents(pm, obj);
aoqi@0	145
aoqi@0	146	// This is called by the young collector. It will already have taken care of
aoqi@0	147	// all class loader data. So, we don't have to follow the class loader ->
aoqi@0	148	// class loader data link.
aoqi@0	149	}
aoqi@0	150
aoqi@0	151	int InstanceClassLoaderKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
aoqi@0	152	InstanceKlass::oop_update_pointers(cm, obj);
aoqi@0	153	return size_helper();
aoqi@0	154	}
aoqi@0	155	#endif // INCLUDE_ALL_GCS
aoqi@0	156