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comparison src/share/vm/gc_implementation/shared/immutableSpace.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2001-2006 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 # include "incls/_precompiled.incl"
26 # include "incls/_immutableSpace.cpp.incl"
27
28 void ImmutableSpace::initialize(MemRegion mr) {
29 HeapWord* bottom = mr.start();
30 HeapWord* end = mr.end();
31
32 assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end),
33 "invalid space boundaries");
34
35 _bottom = bottom;
36 _end = end;
37 }
38
39 void ImmutableSpace::oop_iterate(OopClosure* cl) {
40 HeapWord* obj_addr = bottom();
41 HeapWord* t = end();
42 // Could call objects iterate, but this is easier.
43 while (obj_addr < t) {
44 obj_addr += oop(obj_addr)->oop_iterate(cl);
45 }
46 }
47
48 void ImmutableSpace::object_iterate(ObjectClosure* cl) {
49 HeapWord* p = bottom();
50 while (p < end()) {
51 cl->do_object(oop(p));
52 p += oop(p)->size();
53 }
54 }
55
56 #ifndef PRODUCT
57
58 void ImmutableSpace::print_short() const {
59 tty->print(" space " SIZE_FORMAT "K, 100%% used", capacity_in_bytes() / K);
60 }
61
62 void ImmutableSpace::print() const {
63 print_short();
64 tty->print_cr(" [%#-6lx,%#-6lx)", bottom(), end());
65 }
66
67 #endif
68
69 void ImmutableSpace::verify(bool allow_dirty) const {
70 HeapWord* p = bottom();
71 HeapWord* t = end();
72 HeapWord* prev_p = NULL;
73 while (p < t) {
74 oop(p)->verify();
75 prev_p = p;
76 p += oop(p)->size();
77 }
78 guarantee(p == end(), "end of last object must match end of space");
79 }