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src/share/vm/oops/instanceMirrorKlass.cpp@a8ea2f110d87 (annotated)

src/share/vm/oops/instanceMirrorKlass.cpp

Tue, 26 Aug 2014 09:36:53 +0200

author

tschatzl

date

Tue, 26 Aug 2014 09:36:53 +0200

changeset 7091

a8ea2f110d87

parent 6982

4c1b88a53c74

child 7535

7ae4e26cb1e0

permissions

-rw-r--r--

8054819: Rename HeapRegionSeq to HeapRegionManager
Reviewed-by: jwilhelm, jmasa

never@2658	1	/*
coleenp@6626	2	* Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved.
never@2658	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@2658	4	*
never@2658	5	* This code is free software; you can redistribute it and/or modify it
never@2658	6	* under the terms of the GNU General Public License version 2 only, as
never@2658	7	* published by the Free Software Foundation.
never@2658	8	*
never@2658	9	* This code is distributed in the hope that it will be useful, but WITHOUT
never@2658	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@2658	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@2658	12	* version 2 for more details (a copy is included in the LICENSE file that
never@2658	13	* accompanied this code).
never@2658	14	*
never@2658	15	* You should have received a copy of the GNU General Public License version
never@2658	16	* 2 along with this work; if not, write to the Free Software Foundation,
never@2658	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@2658	18	*
never@2658	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
never@2658	20	* or visit www.oracle.com if you need additional information or have any
never@2658	21	* questions.
never@2658	22	*
never@2658	23	*/
never@2658	24
never@2658	25	#include "precompiled.hpp"
never@2658	26	#include "classfile/javaClasses.hpp"
never@2658	27	#include "classfile/systemDictionary.hpp"
never@2658	28	#include "gc_implementation/shared/markSweep.inline.hpp"
never@2658	29	#include "gc_interface/collectedHeap.inline.hpp"
never@2658	30	#include "memory/genOopClosures.inline.hpp"
stefank@6982	31	#include "memory/iterator.inline.hpp"
never@2658	32	#include "memory/oopFactory.hpp"
never@2658	33	#include "oops/instanceKlass.hpp"
never@2658	34	#include "oops/instanceMirrorKlass.hpp"
never@2658	35	#include "oops/instanceOop.hpp"
never@2658	36	#include "oops/oop.inline.hpp"
never@2658	37	#include "oops/symbol.hpp"
never@2658	38	#include "runtime/handles.inline.hpp"
jprovino@4542	39	#include "utilities/macros.hpp"
jprovino@4542	40	#if INCLUDE_ALL_GCS
coleenp@4037	41	#include "gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp"
never@2658	42	#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
never@2658	43	#include "gc_implementation/g1/g1OopClosures.inline.hpp"
never@2658	44	#include "gc_implementation/g1/g1RemSet.inline.hpp"
tschatzl@7091	45	#include "gc_implementation/g1/heapRegionManager.inline.hpp"
never@2658	46	#include "gc_implementation/parNew/parOopClosures.inline.hpp"
never@2658	47	#include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
never@2658	48	#include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
never@2658	49	#include "oops/oop.pcgc.inline.hpp"
jprovino@4542	50	#endif // INCLUDE_ALL_GCS
never@2658	51
coleenp@4047	52	int InstanceMirrorKlass::_offset_of_static_fields = 0;
never@2658	53
never@2658	54	#ifdef ASSERT
never@2658	55	template <class T> void assert_is_in(T *p) {
never@2658	56	T heap_oop = oopDesc::load_heap_oop(p);
never@2658	57	if (!oopDesc::is_null(heap_oop)) {
never@2658	58	oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
never@2658	59	assert(Universe::heap()->is_in(o), "should be in heap");
never@2658	60	}
never@2658	61	}
never@2658	62	template <class T> void assert_is_in_closed_subset(T *p) {
never@2658	63	T heap_oop = oopDesc::load_heap_oop(p);
never@2658	64	if (!oopDesc::is_null(heap_oop)) {
never@2658	65	oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
never@2658	66	assert(Universe::heap()->is_in_closed_subset(o), "should be in closed");
never@2658	67	}
never@2658	68	}
never@2658	69	template <class T> void assert_is_in_reserved(T *p) {
never@2658	70	T heap_oop = oopDesc::load_heap_oop(p);
never@2658	71	if (!oopDesc::is_null(heap_oop)) {
never@2658	72	oop o = oopDesc::decode_heap_oop_not_null(heap_oop);
never@2658	73	assert(Universe::heap()->is_in_reserved(o), "should be in reserved");
never@2658	74	}
never@2658	75	}
never@2658	76	template <class T> void assert_nothing(T *p) {}
never@2658	77
never@2658	78	#else
never@2658	79	template <class T> void assert_is_in(T *p) {}
never@2658	80	template <class T> void assert_is_in_closed_subset(T *p) {}
never@2658	81	template <class T> void assert_is_in_reserved(T *p) {}
never@2658	82	template <class T> void assert_nothing(T *p) {}
never@2658	83	#endif // ASSERT
never@2658	84
never@2658	85	#define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE( \
never@2658	86	T, start_p, count, do_oop, \
never@2658	87	assert_fn) \
never@2658	88	{ \
never@2658	89	T* p = (T*)(start_p); \
never@2658	90	T* const end = p + (count); \
never@2658	91	while (p < end) { \
never@2658	92	(assert_fn)(p); \
never@2658	93	do_oop; \
never@2658	94	++p; \
never@2658	95	} \
never@2658	96	}
never@2658	97
never@2658	98	#define InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE( \
never@2658	99	T, start_p, count, low, high, \
never@2658	100	do_oop, assert_fn) \
never@2658	101	{ \
never@2658	102	T* const l = (T*)(low); \
never@2658	103	T* const h = (T*)(high); \
never@2658	104	assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 && \
never@2658	105	mask_bits((intptr_t)h, sizeof(T)-1) == 0, \
never@2658	106	"bounded region must be properly aligned"); \
never@2658	107	T* p = (T*)(start_p); \
never@2658	108	T* end = p + (count); \
never@2658	109	if (p < l) p = l; \
never@2658	110	if (end > h) end = h; \
never@2658	111	while (p < end) { \
never@2658	112	(assert_fn)(p); \
never@2658	113	do_oop; \
never@2658	114	++p; \
never@2658	115	} \
never@2658	116	}
never@2658	117
never@2658	118
never@2658	119	#define InstanceMirrorKlass_OOP_ITERATE(start_p, count, \
never@2658	120	do_oop, assert_fn) \
never@2658	121	{ \
never@2658	122	if (UseCompressedOops) { \
never@2658	123	InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \
never@2658	124	start_p, count, \
never@2658	125	do_oop, assert_fn) \
never@2658	126	} else { \
never@2658	127	InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE(oop, \
never@2658	128	start_p, count, \
never@2658	129	do_oop, assert_fn) \
never@2658	130	} \
never@2658	131	}
never@2658	132
never@2658	133	// The following macros call specialized macros, passing either oop or
never@2658	134	// narrowOop as the specialization type. These test the UseCompressedOops
never@2658	135	// flag.
never@2658	136	#define InstanceMirrorKlass_BOUNDED_OOP_ITERATE(start_p, count, low, high, \
never@2658	137	do_oop, assert_fn) \
never@2658	138	{ \
never@2658	139	if (UseCompressedOops) { \
never@2658	140	InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \
never@2658	141	start_p, count, \
never@2658	142	low, high, \
never@2658	143	do_oop, assert_fn) \
never@2658	144	} else { \
never@2658	145	InstanceMirrorKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \
never@2658	146	start_p, count, \
never@2658	147	low, high, \
never@2658	148	do_oop, assert_fn) \
never@2658	149	} \
never@2658	150	}
never@2658	151
never@2658	152
coleenp@4047	153	void InstanceMirrorKlass::oop_follow_contents(oop obj) {
coleenp@4037	154	InstanceKlass::oop_follow_contents(obj);
coleenp@4037	155
coleenp@4037	156	// Follow the klass field in the mirror.
coleenp@4037	157	Klass* klass = java_lang_Class::as_Klass(obj);
coleenp@4037	158	if (klass != NULL) {
sjohanss@6169	159	// An anonymous class doesn't have its own class loader, so the call
sjohanss@6169	160	// to follow_klass will mark and push its java mirror instead of the
sjohanss@6169	161	// class loader. When handling the java mirror for an anonymous class
sjohanss@6169	162	// we need to make sure its class loader data is claimed, this is done
sjohanss@6169	163	// by calling follow_class_loader explicitly. For non-anonymous classes
sjohanss@6169	164	// the call to follow_class_loader is made when the class loader itself
sjohanss@6169	165	// is handled.
sjohanss@6148	166	if (klass->oop_is_instance() && InstanceKlass::cast(klass)->is_anonymous()) {
sjohanss@6148	167	MarkSweep::follow_class_loader(klass->class_loader_data());
sjohanss@6148	168	} else {
sjohanss@6148	169	MarkSweep::follow_klass(klass);
sjohanss@6148	170	}
coleenp@4037	171	} else {
coleenp@4037	172	// If klass is NULL then this a mirror for a primitive type.
coleenp@4037	173	// We don't have to follow them, since they are handled as strong
coleenp@4037	174	// roots in Universe::oops_do.
coleenp@4037	175	assert(java_lang_Class::is_primitive(obj), "Sanity check");
coleenp@4037	176	}
coleenp@4037	177
never@2658	178	InstanceMirrorKlass_OOP_ITERATE( \
never@2658	179	start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
never@2658	180	MarkSweep::mark_and_push(p), \
never@2658	181	assert_is_in_closed_subset)
never@2658	182	}
never@2658	183
jprovino@4542	184	#if INCLUDE_ALL_GCS
coleenp@4047	185	void InstanceMirrorKlass::oop_follow_contents(ParCompactionManager* cm,
never@2658	186	oop obj) {
coleenp@4037	187	InstanceKlass::oop_follow_contents(cm, obj);
coleenp@4037	188
coleenp@4037	189	// Follow the klass field in the mirror.
coleenp@4037	190	Klass* klass = java_lang_Class::as_Klass(obj);
coleenp@4037	191	if (klass != NULL) {
sjohanss@6169	192	// An anonymous class doesn't have its own class loader, so the call
sjohanss@6169	193	// to follow_klass will mark and push its java mirror instead of the
sjohanss@6169	194	// class loader. When handling the java mirror for an anonymous class
sjohanss@6169	195	// we need to make sure its class loader data is claimed, this is done
sjohanss@6169	196	// by calling follow_class_loader explicitly. For non-anonymous classes
sjohanss@6169	197	// the call to follow_class_loader is made when the class loader itself
sjohanss@6169	198	// is handled.
sjohanss@6169	199	if (klass->oop_is_instance() && InstanceKlass::cast(klass)->is_anonymous()) {
sjohanss@6169	200	PSParallelCompact::follow_class_loader(cm, klass->class_loader_data());
sjohanss@6169	201	} else {
sjohanss@6169	202	PSParallelCompact::follow_klass(cm, klass);
sjohanss@6169	203	}
coleenp@4037	204	} else {
coleenp@4037	205	// If klass is NULL then this a mirror for a primitive type.
coleenp@4037	206	// We don't have to follow them, since they are handled as strong
coleenp@4037	207	// roots in Universe::oops_do.
coleenp@4037	208	assert(java_lang_Class::is_primitive(obj), "Sanity check");
coleenp@4037	209	}
coleenp@4037	210
never@2658	211	InstanceMirrorKlass_OOP_ITERATE( \
never@2658	212	start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
never@2658	213	PSParallelCompact::mark_and_push(cm, p), \
never@2658	214	assert_is_in)
never@2658	215	}
jprovino@4542	216	#endif // INCLUDE_ALL_GCS
never@2658	217
coleenp@4047	218	int InstanceMirrorKlass::oop_adjust_pointers(oop obj) {
never@2658	219	int size = oop_size(obj);
coleenp@4037	220	InstanceKlass::oop_adjust_pointers(obj);
coleenp@4037	221
never@2658	222	InstanceMirrorKlass_OOP_ITERATE( \
never@2658	223	start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
never@2658	224	MarkSweep::adjust_pointer(p), \
never@2658	225	assert_nothing)
never@2658	226	return size;
never@2658	227	}
never@2658	228
never@2658	229	#define InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(T, nv_suffix) \
never@2658	230	InstanceMirrorKlass_OOP_ITERATE( \
never@2658	231	start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
never@2658	232	(closure)->do_oop##nv_suffix(p), \
never@2658	233	assert_is_in_closed_subset) \
never@2658	234	return oop_size(obj); \
never@2658	235
never@2658	236	#define InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(T, nv_suffix, mr) \
never@2658	237	InstanceMirrorKlass_BOUNDED_OOP_ITERATE( \
never@2658	238	start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj), \
never@2658	239	mr.start(), mr.end(), \
never@2658	240	(closure)->do_oop##nv_suffix(p), \
never@2658	241	assert_is_in_closed_subset) \
never@2658	242	return oop_size(obj); \
never@2658	243
never@2658	244
coleenp@4047	245	// Macro to define InstanceMirrorKlass::oop_oop_iterate for virtual/nonvirtual for
never@2658	246	// all closures. Macros calling macros above for each oop size.
never@2658	247
never@2658	248	#define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
never@2658	249	\
coleenp@4047	250	int InstanceMirrorKlass:: \
never@2658	251	oop_oop_iterate##nv_suffix(oop obj, OopClosureType* closure) { \
never@2658	252	/* Get size before changing pointers */ \
never@2658	253	SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \
never@2658	254	\
coleenp@4037	255	InstanceKlass::oop_oop_iterate##nv_suffix(obj, closure); \
coleenp@4037	256	\
coleenp@4037	257	if_do_metadata_checked(closure, nv_suffix) { \
coleenp@4037	258	Klass* klass = java_lang_Class::as_Klass(obj); \
coleenp@4037	259	/* We'll get NULL for primitive mirrors. */ \
coleenp@4037	260	if (klass != NULL) { \
coleenp@4037	261	closure->do_klass##nv_suffix(klass); \
coleenp@4037	262	} \
coleenp@4037	263	} \
never@2658	264	\
never@2658	265	if (UseCompressedOops) { \
never@2658	266	InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \
never@2658	267	} else { \
never@2658	268	InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \
never@2658	269	} \
never@2658	270	}
never@2658	271
jprovino@4542	272	#if INCLUDE_ALL_GCS
never@2658	273	#define InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN(OopClosureType, nv_suffix) \
never@2658	274	\
coleenp@4047	275	int InstanceMirrorKlass:: \
never@2658	276	oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* closure) { \
never@2658	277	/* Get size before changing pointers */ \
never@2658	278	SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \
never@2658	279	\
coleenp@4037	280	InstanceKlass::oop_oop_iterate_backwards##nv_suffix(obj, closure); \
never@2658	281	\
never@2658	282	if (UseCompressedOops) { \
never@2658	283	InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(narrowOop, nv_suffix); \
never@2658	284	} else { \
never@2658	285	InstanceMirrorKlass_SPECIALIZED_OOP_ITERATE_DEFN(oop, nv_suffix); \
never@2658	286	} \
never@2658	287	}
jprovino@4542	288	#endif // INCLUDE_ALL_GCS
never@2658	289
never@2658	290
never@2658	291	#define InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
never@2658	292	\
coleenp@4047	293	int InstanceMirrorKlass:: \
never@2658	294	oop_oop_iterate##nv_suffix##_m(oop obj, \
never@2658	295	OopClosureType* closure, \
never@2658	296	MemRegion mr) { \
never@2658	297	SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::irk); \
never@2658	298	\
coleenp@4037	299	InstanceKlass::oop_oop_iterate##nv_suffix##_m(obj, closure, mr); \
coleenp@4037	300	\
coleenp@4037	301	if_do_metadata_checked(closure, nv_suffix) { \
coleenp@4037	302	if (mr.contains(obj)) { \
coleenp@4037	303	Klass* klass = java_lang_Class::as_Klass(obj); \
coleenp@4037	304	/* We'll get NULL for primitive mirrors. */ \
coleenp@4037	305	if (klass != NULL) { \
coleenp@4037	306	closure->do_klass##nv_suffix(klass); \
coleenp@4037	307	} \
coleenp@4037	308	} \
coleenp@4037	309	} \
coleenp@4037	310	\
never@2658	311	if (UseCompressedOops) { \
never@2658	312	InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(narrowOop, nv_suffix, mr); \
never@2658	313	} else { \
never@2658	314	InstanceMirrorKlass_BOUNDED_SPECIALIZED_OOP_ITERATE(oop, nv_suffix, mr); \
never@2658	315	} \
never@2658	316	}
never@2658	317
never@2658	318	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN)
never@2658	319	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN)
jprovino@4542	320	#if INCLUDE_ALL_GCS
never@2658	321	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
never@2658	322	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_BACKWARDS_DEFN)
jprovino@4542	323	#endif // INCLUDE_ALL_GCS
never@2658	324	ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m)
never@2658	325	ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceMirrorKlass_OOP_OOP_ITERATE_DEFN_m)
never@2658	326
jprovino@4542	327	#if INCLUDE_ALL_GCS
coleenp@4047	328	void InstanceMirrorKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
coleenp@4037	329	// Note that we don't have to follow the mirror -> klass pointer, since all
coleenp@4037	330	// klasses that are dirty will be scavenged when we iterate over the
coleenp@4037	331	// ClassLoaderData objects.
coleenp@4037	332
coleenp@4037	333	InstanceKlass::oop_push_contents(pm, obj);
never@2658	334	InstanceMirrorKlass_OOP_ITERATE( \
never@2658	335	start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\
never@2658	336	if (PSScavenge::should_scavenge(p)) { \
never@2658	337	pm->claim_or_forward_depth(p); \
never@2658	338	}, \
never@2658	339	assert_nothing )
never@2658	340	}
never@2658	341
coleenp@4047	342	int InstanceMirrorKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
coleenp@4037	343	int size = oop_size(obj);
coleenp@4037	344	InstanceKlass::oop_update_pointers(cm, obj);
coleenp@4037	345
never@2658	346	InstanceMirrorKlass_OOP_ITERATE( \
never@2658	347	start_of_static_fields(obj), java_lang_Class::static_oop_field_count(obj),\
never@2658	348	PSParallelCompact::adjust_pointer(p), \
never@2658	349	assert_nothing)
coleenp@4037	350	return size;
never@2658	351	}
jprovino@4542	352	#endif // INCLUDE_ALL_GCS
never@2658	353
coleenp@4047	354	int InstanceMirrorKlass::instance_size(KlassHandle k) {
never@2658	355	if (k() != NULL && k->oop_is_instance()) {
coleenp@4037	356	return align_object_size(size_helper() + InstanceKlass::cast(k())->static_field_size());
never@2658	357	}
never@2658	358	return size_helper();
never@2658	359	}
never@2658	360
coleenp@4047	361	instanceOop InstanceMirrorKlass::allocate_instance(KlassHandle k, TRAPS) {
never@2658	362	// Query before forming handle.
never@2658	363	int size = instance_size(k);
coleenp@4037	364	KlassHandle h_k(THREAD, this);
coleenp@6626	365	instanceOop i = (instanceOop)CollectedHeap::obj_allocate(h_k, size, CHECK_NULL);
coleenp@6626	366
coleenp@6626	367	// Since mirrors can be variable sized because of the static fields, store
coleenp@6626	368	// the size in the mirror itself.
coleenp@6626	369	java_lang_Class::set_oop_size(i, size);
coleenp@6626	370
never@2658	371	return i;
never@2658	372	}
never@2658	373
coleenp@4047	374	int InstanceMirrorKlass::oop_size(oop obj) const {
never@2658	375	return java_lang_Class::oop_size(obj);
never@2658	376	}
never@2658	377
coleenp@4047	378	int InstanceMirrorKlass::compute_static_oop_field_count(oop obj) {
coleenp@4037	379	Klass* k = java_lang_Class::as_Klass(obj);
coleenp@4037	380	if (k != NULL && k->oop_is_instance()) {
coleenp@4037	381	return InstanceKlass::cast(k)->static_oop_field_count();
never@2658	382	}
never@2658	383	return 0;
never@2658	384	}