1 /*
2 * Copyright (c) 1997, 2013, 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 "oops/oop.inline.hpp"
27 #include "runtime/atomic.inline.hpp"
28 #include "utilities/accessFlags.hpp"
29 #ifdef TARGET_OS_FAMILY_linux
30 # include "os_linux.inline.hpp"
31 #endif
32 #ifdef TARGET_OS_FAMILY_solaris
33 # include "os_solaris.inline.hpp"
34 #endif
35 #ifdef TARGET_OS_FAMILY_windows
36 # include "os_windows.inline.hpp"
37 #endif
38 #ifdef TARGET_OS_FAMILY_aix
39 # include "os_aix.inline.hpp"
40 #endif
41 #ifdef TARGET_OS_FAMILY_bsd
42 # include "os_bsd.inline.hpp"
43 #endif
44
45
46 void AccessFlags::atomic_set_bits(jint bits) {
47 // Atomically update the flags with the bits given
48 jint old_flags, new_flags, f;
49 do {
50 old_flags = _flags;
51 new_flags = old_flags | bits;
52 f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
53 } while(f != old_flags);
54 }
55
56 void AccessFlags::atomic_clear_bits(jint bits) {
57 // Atomically update the flags with the bits given
58 jint old_flags, new_flags, f;
59 do {
60 old_flags = _flags;
61 new_flags = old_flags & ~bits;
62 f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
63 } while(f != old_flags);
64 }
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1 /*
2 * Copyright (c) 1997, 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 "oops/oop.inline.hpp"
27 #include "runtime/atomic.inline.hpp"
28 #include "utilities/accessFlags.hpp"
29
30 void AccessFlags::atomic_set_bits(jint bits) {
31 // Atomically update the flags with the bits given
32 jint old_flags, new_flags, f;
33 do {
34 old_flags = _flags;
35 new_flags = old_flags | bits;
36 f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
37 } while(f != old_flags);
38 }
39
40 void AccessFlags::atomic_clear_bits(jint bits) {
41 // Atomically update the flags with the bits given
42 jint old_flags, new_flags, f;
43 do {
44 old_flags = _flags;
45 new_flags = old_flags & ~bits;
46 f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
47 } while(f != old_flags);
48 }
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