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src/share/vm/oops/oop.pcgc.inline.hpp@f95d63e2154a (annotated)

src/share/vm/oops/oop.pcgc.inline.hpp

Tue, 23 Nov 2010 13:22:55 -0800

author

stefank

date

Tue, 23 Nov 2010 13:22:55 -0800

changeset 2314

f95d63e2154a

parent 1907

c18cbe5936b8

child 2334

3cd116fd11be

permissions

-rw-r--r--

6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

duke@435	1	/*
stefank@2314	2	* Copyright (c) 2005, 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_OOPS_OOP_PCGC_INLINE_HPP
stefank@2314	26	#define SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP
stefank@2314	27
stefank@2314	28	#ifndef SERIALGC
stefank@2314	29	#include "gc_implementation/parNew/parNewGeneration.hpp"
stefank@2314	30	#include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
stefank@2314	31	#include "gc_implementation/parallelScavenge/psCompactionManager.hpp"
stefank@2314	32	#include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
stefank@2314	33	#include "gc_implementation/parallelScavenge/psScavenge.hpp"
stefank@2314	34	#include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
stefank@2314	35	#endif
stefank@2314	36
duke@435	37	inline void oopDesc::update_contents(ParCompactionManager* cm) {
duke@435	38	// The klass field must be updated before anything else
duke@435	39	// can be done.
duke@435	40	DEBUG_ONLY(klassOopDesc* original_klass = klass());
duke@435	41
duke@435	42	// Can the option to update and/or copy be moved up in the
duke@435	43	// call chain to avoid calling into here?
duke@435	44
duke@435	45	if (PSParallelCompact::should_update_klass(klass())) {
duke@435	46	update_header();
duke@435	47	assert(klass()->is_klass(), "Not updated correctly");
duke@435	48	} else {
duke@435	49	assert(klass()->is_klass(), "Not updated");
duke@435	50	}
duke@435	51
duke@435	52	Klass* new_klass = blueprint();
duke@435	53	if (!new_klass->oop_is_typeArray()) {
duke@435	54	// It might contain oops beyond the header, so take the virtual call.
duke@435	55	new_klass->oop_update_pointers(cm, this);
duke@435	56	}
duke@435	57	// Else skip it. The typeArrayKlass in the header never needs scavenging.
duke@435	58	}
duke@435	59
duke@435	60	inline void oopDesc::update_contents(ParCompactionManager* cm,
duke@435	61	HeapWord* begin_limit,
duke@435	62	HeapWord* end_limit) {
duke@435	63	// The klass field must be updated before anything else
duke@435	64	// can be done.
duke@435	65	debug_only(klassOopDesc* original_klass = klass());
duke@435	66
duke@435	67	update_contents(cm, klass(), begin_limit, end_limit);
duke@435	68	}
duke@435	69
duke@435	70	inline void oopDesc::update_contents(ParCompactionManager* cm,
duke@435	71	klassOop old_klass,
duke@435	72	HeapWord* begin_limit,
duke@435	73	HeapWord* end_limit) {
duke@435	74
duke@435	75	klassOop updated_klass =
duke@435	76	PSParallelCompact::summary_data().calc_new_klass(old_klass);
duke@435	77
duke@435	78	// Needs to be boundary aware for the 64 bit case
duke@435	79	// update_header();
duke@435	80	// The klass has moved. Is the location of the klass
duke@435	81	// within the limits?
coleenp@548	82	if ((((HeapWord*)&_metadata._klass) >= begin_limit) &&
coleenp@548	83	(((HeapWord*)&_metadata._klass) < end_limit)) {
duke@435	84	set_klass(updated_klass);
duke@435	85	}
duke@435	86
duke@435	87	Klass* klass = updated_klass->klass_part();
duke@435	88	if (!klass->oop_is_typeArray()) {
duke@435	89	// It might contain oops beyond the header, so take the virtual call.
duke@435	90	klass->oop_update_pointers(cm, this, begin_limit, end_limit);
duke@435	91	}
duke@435	92	// Else skip it. The typeArrayKlass in the header never needs scavenging.
duke@435	93	}
duke@435	94
duke@435	95	inline void oopDesc::follow_contents(ParCompactionManager* cm) {
duke@435	96	assert (PSParallelCompact::mark_bitmap()->is_marked(this),
duke@435	97	"should be marked");
duke@435	98	blueprint()->oop_follow_contents(cm, this);
duke@435	99	}
duke@435	100
duke@435	101	// Used by parallel old GC.
duke@435	102
duke@435	103	inline void oopDesc::follow_header(ParCompactionManager* cm) {
coleenp@548	104	if (UseCompressedOops) {
coleenp@548	105	PSParallelCompact::mark_and_push(cm, compressed_klass_addr());
coleenp@548	106	} else {
coleenp@548	107	PSParallelCompact::mark_and_push(cm, klass_addr());
coleenp@548	108	}
duke@435	109	}
duke@435	110
duke@435	111	inline oop oopDesc::forward_to_atomic(oop p) {
duke@435	112	assert(ParNewGeneration::is_legal_forward_ptr(p),
duke@435	113	"illegal forwarding pointer value.");
duke@435	114	markOop oldMark = mark();
duke@435	115	markOop forwardPtrMark = markOopDesc::encode_pointer_as_mark(p);
duke@435	116	markOop curMark;
duke@435	117
duke@435	118	assert(forwardPtrMark->decode_pointer() == p, "encoding must be reversable");
duke@435	119	assert(sizeof(markOop) == sizeof(intptr_t), "CAS below requires this.");
duke@435	120
duke@435	121	while (!is_forwarded()) {
duke@435	122	curMark = (markOop)Atomic::cmpxchg_ptr(forwardPtrMark, &_mark, oldMark);
duke@435	123	if (curMark == oldMark) {
duke@435	124	assert(is_forwarded(), "the CAS should have succeeded.");
duke@435	125	return NULL;
duke@435	126	}
duke@435	127	oldMark = curMark;
duke@435	128	}
duke@435	129	return forwardee();
duke@435	130	}
duke@435	131
duke@435	132	inline void oopDesc::update_header() {
coleenp@548	133	if (UseCompressedOops) {
coleenp@548	134	PSParallelCompact::adjust_pointer(compressed_klass_addr());
coleenp@548	135	} else {
coleenp@548	136	PSParallelCompact::adjust_pointer(klass_addr());
coleenp@548	137	}
duke@435	138	}
duke@435	139
duke@435	140	inline void oopDesc::update_header(HeapWord* beg_addr, HeapWord* end_addr) {
coleenp@548	141	if (UseCompressedOops) {
coleenp@548	142	PSParallelCompact::adjust_pointer(compressed_klass_addr(),
coleenp@548	143	beg_addr, end_addr);
coleenp@548	144	} else {
coleenp@548	145	PSParallelCompact::adjust_pointer(klass_addr(), beg_addr, end_addr);
coleenp@548	146	}
duke@435	147	}
stefank@2314	148
stefank@2314	149	#endif // SHARE_VM_OOPS_OOP_PCGC_INLINE_HPP