1 /*
2 * Copyright (c) 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 #ifndef SRC_SHARE_VM_GC_SHARED_MEMSETWITHCONCURRENTREADERS_HPP
26 #define SRC_SHARE_VM_GC_SHARED_MEMSETWITHCONCURRENTREADERS_HPP
27
28 #include <stddef.h>
29 #include <string.h>
30 #include "utilities/macros.hpp"
31
32 // Only used by concurrent collectors.
33 #if INCLUDE_ALL_GCS
34
35 // Fill a block of memory with value, like memset, but with the
36 // understanding that there may be concurrent readers of that memory.
37 void memset_with_concurrent_readers(void* to, int value, size_t size);
38
39 #ifdef TARGET_ARCH_sparc
40
41 // SPARC requires special handling. See SPARC-specific definition.
42
43 #else
44 // All others just use memset.
45
46 inline void memset_with_concurrent_readers(void* to, int value, size_t size) {
47 ::memset(to, value, size);
48 }
49
50 #endif // End of target dispatch.
51
52 #endif // INCLUDE_ALL_GCS
53
54 #endif // include guard
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1 /*
2 * Copyright (c) 2015, 2016, 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 #ifndef SRC_SHARE_VM_GC_SHARED_MEMSETWITHCONCURRENTREADERS_HPP
26 #define SRC_SHARE_VM_GC_SHARED_MEMSETWITHCONCURRENTREADERS_HPP
27
28 #include "utilities/macros.hpp"
29
30 #include <stddef.h>
31 #include <string.h>
32
33 // Only used by concurrent collectors.
34 #if INCLUDE_ALL_GCS
35
36 // Fill a block of memory with value, like memset, but with the
37 // understanding that there may be concurrent readers of that memory.
38 void memset_with_concurrent_readers(void* to, int value, size_t size);
39
40 #ifdef SPARC
41
42 // SPARC requires special handling. See SPARC-specific definition.
43
44 #else
45 // All others just use memset.
46
47 inline void memset_with_concurrent_readers(void* to, int value, size_t size) {
48 ::memset(to, value, size);
49 }
50
51 #endif // End of target dispatch.
52
53 #endif // INCLUDE_ALL_GCS
54
55 #endif // SRC_SHARE_VM_GC_SHARED_MEMSETWITHCONCURRENTREADERS_HPP
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