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src/share/vm/gc_implementation/shared/immutableSpace.cpp@db9981fd3124 (annotated)

src/share/vm/gc_implementation/shared/immutableSpace.cpp

Wed, 23 Jan 2013 13:02:39 -0500

author

jprovino

date

Wed, 23 Jan 2013 13:02:39 -0500

changeset 4542

db9981fd3124

parent 4037

da91efe96a93

child 6198

55fb97c4c58d

permissions

-rw-r--r--

8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
Summary: Rename INCLUDE_ALTERNATE_GCS to INCLUDE_ALL_GCS and replace SERIALGC with INCLUDE_ALL_GCS.
Reviewed-by: coleenp, stefank

duke@435	1	/*
brutisso@3711	2	* Copyright (c) 2001, 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	#include "precompiled.hpp"
jprovino@4542	26	#include "utilities/macros.hpp"
jprovino@4542	27	#if INCLUDE_ALL_GCS
stefank@2314	28	#include "gc_implementation/shared/immutableSpace.hpp"
stefank@2314	29	#include "memory/universe.hpp"
stefank@2314	30	#include "oops/oop.inline.hpp"
jprovino@4542	31	#endif // INCLUDE_ALL_GCS
duke@435	32
duke@435	33	void ImmutableSpace::initialize(MemRegion mr) {
duke@435	34	HeapWord* bottom = mr.start();
duke@435	35	HeapWord* end = mr.end();
duke@435	36
duke@435	37	assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end),
duke@435	38	"invalid space boundaries");
duke@435	39
duke@435	40	_bottom = bottom;
duke@435	41	_end = end;
duke@435	42	}
duke@435	43
coleenp@4037	44	void ImmutableSpace::oop_iterate(ExtendedOopClosure* cl) {
duke@435	45	HeapWord* obj_addr = bottom();
duke@435	46	HeapWord* t = end();
duke@435	47	// Could call objects iterate, but this is easier.
duke@435	48	while (obj_addr < t) {
duke@435	49	obj_addr += oop(obj_addr)->oop_iterate(cl);
duke@435	50	}
duke@435	51	}
duke@435	52
duke@435	53	void ImmutableSpace::object_iterate(ObjectClosure* cl) {
duke@435	54	HeapWord* p = bottom();
duke@435	55	while (p < end()) {
duke@435	56	cl->do_object(oop(p));
duke@435	57	p += oop(p)->size();
duke@435	58	}
duke@435	59	}
duke@435	60
duke@435	61	#ifndef PRODUCT
duke@435	62
duke@435	63	void ImmutableSpace::print_short() const {
duke@435	64	tty->print(" space " SIZE_FORMAT "K, 100%% used", capacity_in_bytes() / K);
duke@435	65	}
duke@435	66
duke@435	67	void ImmutableSpace::print() const {
duke@435	68	print_short();
duke@435	69	tty->print_cr(" [%#-6lx,%#-6lx)", bottom(), end());
duke@435	70	}
duke@435	71
duke@435	72	#endif
duke@435	73
brutisso@3711	74	void ImmutableSpace::verify() {
duke@435	75	HeapWord* p = bottom();
duke@435	76	HeapWord* t = end();
duke@435	77	HeapWord* prev_p = NULL;
duke@435	78	while (p < t) {
duke@435	79	oop(p)->verify();
duke@435	80	prev_p = p;
duke@435	81	p += oop(p)->size();
duke@435	82	}
duke@435	83	guarantee(p == end(), "end of last object must match end of space");
duke@435	84	}