Sun, 13 Apr 2008 17:43:42 -0400
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
1 /*
2 * Copyright 2001-2002 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.
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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
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23 */
25 // Inline functions of BarrierSet, which de-virtualize certain
26 // performance-critical calls when when the barrier is the most common
27 // card-table kind.
29 void BarrierSet::write_ref_field(void* field, oop new_val) {
30 if (kind() == CardTableModRef) {
31 ((CardTableModRefBS*)this)->inline_write_ref_field(field, new_val);
32 } else {
33 write_ref_field_work(field, new_val);
34 }
35 }
37 void BarrierSet::write_ref_array(MemRegion mr) {
38 if (kind() == CardTableModRef) {
39 ((CardTableModRefBS*)this)->inline_write_ref_array(mr);
40 } else {
41 write_ref_array_work(mr);
42 }
43 }
45 void BarrierSet::write_region(MemRegion mr) {
46 if (kind() == CardTableModRef) {
47 ((CardTableModRefBS*)this)->inline_write_region(mr);
48 } else {
49 write_region_work(mr);
50 }
51 }