1 /*
2 * Copyright (c) 2001, 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc_implementation/concurrentMarkSweep/freeChunk.hpp"
27 #include "memory/freeBlockDictionary.hpp"
28 #include "utilities/copy.hpp"
29
30 #ifndef PRODUCT
31
32 #define baadbabeHeapWord badHeapWordVal
33 #define deadbeefHeapWord 0xdeadbeef
34
35 size_t const FreeChunk::header_size() {
36 return sizeof(FreeChunk)/HeapWordSize;
37 }
38
39 void FreeChunk::mangleAllocated(size_t size) {
40 // mangle all but the header of a just-allocated block
41 // of storage
42 assert(size >= MinChunkSize, "smallest size of object");
43 // we can't assert that _size == size because this may be an
44 // allocation out of a linear allocation block
45 assert(sizeof(FreeChunk) % HeapWordSize == 0,
46 "shouldn't write beyond chunk");
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1 /*
2 * Copyright (c) 2001, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/cms/freeChunk.hpp"
27 #include "memory/freeBlockDictionary.hpp"
28 #include "utilities/copy.hpp"
29
30 #ifndef PRODUCT
31
32 #define baadbabeHeapWord badHeapWordVal
33 #define deadbeefHeapWord 0xdeadbeef
34
35 size_t const FreeChunk::header_size() {
36 return sizeof(FreeChunk)/HeapWordSize;
37 }
38
39 void FreeChunk::mangleAllocated(size_t size) {
40 // mangle all but the header of a just-allocated block
41 // of storage
42 assert(size >= MinChunkSize, "smallest size of object");
43 // we can't assert that _size == size because this may be an
44 // allocation out of a linear allocation block
45 assert(sizeof(FreeChunk) % HeapWordSize == 0,
46 "shouldn't write beyond chunk");
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