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src/share/vm/oops/instanceClassLoaderKlass.cpp@8c95980d0b66 (annotated)

src/share/vm/oops/instanceClassLoaderKlass.cpp

Sat, 07 Nov 2020 10:30:02 +0800

author

aoqi

date

Sat, 07 Nov 2020 10:30:02 +0800

changeset 10026

8c95980d0b66

parent 7535

7ae4e26cb1e0

permissions

-rw-r--r--

Added tag mips-jdk8u275-b01 for changeset d3b4d62f391f

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"
stefank@6982	31	#include "memory/iterator.inline.hpp"
aoqi@0	32	#include "memory/oopFactory.hpp"
aoqi@0	33	#include "oops/instanceKlass.hpp"
aoqi@0	34	#include "oops/instanceClassLoaderKlass.hpp"
aoqi@0	35	#include "oops/instanceMirrorKlass.hpp"
aoqi@0	36	#include "oops/instanceOop.hpp"
aoqi@0	37	#include "oops/oop.inline.hpp"
aoqi@0	38	#include "oops/symbol.hpp"
aoqi@0	39	#include "runtime/handles.inline.hpp"
aoqi@0	40	#include "utilities/macros.hpp"
aoqi@0	41	#if INCLUDE_ALL_GCS
aoqi@0	42	#include "gc_implementation/parNew/parOopClosures.inline.hpp"
aoqi@0	43	#include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
aoqi@0	44	#include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
aoqi@0	45	#include "oops/oop.pcgc.inline.hpp"
aoqi@0	46	#endif // INCLUDE_ALL_GCS
aoqi@0	47
aoqi@0	48	// Macro to define InstanceClassLoaderKlass::oop_oop_iterate for virtual/nonvirtual for
aoqi@0	49	// all closures. Macros calling macros above for each oop size.
aoqi@0	50	// Since ClassLoader objects have only a pointer to the loader_data, they are not
aoqi@0	51	// compressed nor does the pointer move.
aoqi@0	52
aoqi@0	53	#define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)\
aoqi@0	54	\
aoqi@0	55	int InstanceClassLoaderKlass:: \
aoqi@0	56	oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \
aoqi@0	57	/* Get size before changing pointers */ \
aoqi@0	58	SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
aoqi@0	59	int size = InstanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \
aoqi@0	60	\
aoqi@0	61	if_do_metadata_checked(closure, nv_suffix) { \
aoqi@0	62	ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \
aoqi@0	63	/* cld can be null if we have a non-registered class loader. */ \
aoqi@0	64	if (cld != NULL) { \
aoqi@0	65	closure->do_class_loader_data(cld); \
aoqi@0	66	} \
aoqi@0	67	} \
aoqi@0	68	\
aoqi@0	69	return size; \
aoqi@0	70	}
aoqi@0	71
aoqi@0	72	#if INCLUDE_ALL_GCS
aoqi@0	73	#define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
aoqi@0	74	\
aoqi@0	75	int InstanceClassLoaderKlass:: \
aoqi@0	76	oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \
aoqi@0	77	/* Get size before changing pointers */ \
aoqi@0	78	SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
aoqi@0	79	int size = InstanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \
aoqi@0	80	return size; \
aoqi@0	81	}
aoqi@0	82	#endif // INCLUDE_ALL_GCS
aoqi@0	83
aoqi@0	84
aoqi@0	85	#define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
aoqi@0	86	\
aoqi@0	87	int InstanceClassLoaderKlass:: \
aoqi@0	88	oop_oop_iterate##nv_suffix##_m(oop obj, \
aoqi@0	89	OopClosureType* closure, \
aoqi@0	90	MemRegion mr) { \
aoqi@0	91	SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk);\
aoqi@0	92	\
aoqi@0	93	int size = InstanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \
aoqi@0	94	\
aoqi@0	95	if_do_metadata_checked(closure, nv_suffix) { \
aoqi@0	96	if (mr.contains(obj)) { \
aoqi@0	97	ClassLoaderData* cld = java_lang_ClassLoader::loader_data(obj); \
aoqi@0	98	/* cld can be null if we have a non-registered class loader. */ \
aoqi@0	99	if (cld != NULL) { \
aoqi@0	100	closure->do_class_loader_data(cld); \
aoqi@0	101	} \
aoqi@0	102	} \
aoqi@0	103	} \
aoqi@0	104	\
aoqi@0	105	return size; \
aoqi@0	106	}
aoqi@0	107
aoqi@0	108	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
aoqi@0	109	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN)
aoqi@0	110	#if INCLUDE_ALL_GCS
aoqi@0	111	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
aoqi@0	112	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
aoqi@0	113	#endif // INCLUDE_ALL_GCS
aoqi@0	114	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
aoqi@0	115	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DEFN_m)
aoqi@0	116
aoqi@0	117	void InstanceClassLoaderKlass::oop_follow_contents(oop obj) {
aoqi@0	118	InstanceKlass::oop_follow_contents(obj);
aoqi@0	119	ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
aoqi@0	120
aoqi@0	121	// We must NULL check here, since the class loader
aoqi@0	122	// can be found before the loader data has been set up.
aoqi@0	123	if(loader_data != NULL) {
aoqi@0	124	MarkSweep::follow_class_loader(loader_data);
aoqi@0	125	}
aoqi@0	126	}
aoqi@0	127
aoqi@0	128	#if INCLUDE_ALL_GCS
aoqi@0	129	void InstanceClassLoaderKlass::oop_follow_contents(ParCompactionManager* cm,
aoqi@0	130	oop obj) {
aoqi@0	131	InstanceKlass::oop_follow_contents(cm, obj);
aoqi@0	132	ClassLoaderData * const loader_data = java_lang_ClassLoader::loader_data(obj);
aoqi@0	133	if (loader_data != NULL) {
aoqi@0	134	PSParallelCompact::follow_class_loader(cm, loader_data);
aoqi@0	135	}
aoqi@0	136	}
aoqi@0	137
aoqi@0	138	void InstanceClassLoaderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
aoqi@0	139	InstanceKlass::oop_push_contents(pm, obj);
aoqi@0	140
aoqi@0	141	// This is called by the young collector. It will already have taken care of
aoqi@0	142	// all class loader data. So, we don't have to follow the class loader ->
aoqi@0	143	// class loader data link.
aoqi@0	144	}
aoqi@0	145
aoqi@0	146	int InstanceClassLoaderKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
aoqi@0	147	InstanceKlass::oop_update_pointers(cm, obj);
aoqi@0	148	return size_helper();
aoqi@0	149	}
aoqi@0	150	#endif // INCLUDE_ALL_GCS
aoqi@0	151