1 /* |
|
2 * Copyright (c) 2003, 2017, 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 OS_CPU_SOLARIS_X86_VM_ORDERACCESS_SOLARIS_X86_INLINE_HPP |
|
26 #define OS_CPU_SOLARIS_X86_VM_ORDERACCESS_SOLARIS_X86_INLINE_HPP |
|
27 |
|
28 #include "runtime/atomic.hpp" |
|
29 #include "runtime/orderAccess.hpp" |
|
30 #include "runtime/os.hpp" |
|
31 |
|
32 // Compiler version last used for testing: solaris studio 12u3 |
|
33 // Please update this information when this file changes |
|
34 |
|
35 // Implementation of class OrderAccess. |
|
36 |
|
37 // A compiler barrier, forcing the C++ compiler to invalidate all memory assumptions |
|
38 inline void compiler_barrier() { |
|
39 __asm__ volatile ("" : : : "memory"); |
|
40 } |
|
41 |
|
42 inline void OrderAccess::loadload() { compiler_barrier(); } |
|
43 inline void OrderAccess::storestore() { compiler_barrier(); } |
|
44 inline void OrderAccess::loadstore() { compiler_barrier(); } |
|
45 inline void OrderAccess::storeload() { fence(); } |
|
46 |
|
47 inline void OrderAccess::acquire() { compiler_barrier(); } |
|
48 inline void OrderAccess::release() { compiler_barrier(); } |
|
49 |
|
50 inline void OrderAccess::fence() { |
|
51 if (os::is_MP()) { |
|
52 #ifdef AMD64 |
|
53 __asm__ volatile ("lock; addl $0,0(%%rsp)" : : : "cc", "memory"); |
|
54 #else |
|
55 __asm__ volatile ("lock; addl $0,0(%%esp)" : : : "cc", "memory"); |
|
56 #endif |
|
57 } |
|
58 compiler_barrier(); |
|
59 } |
|
60 |
|
61 #endif // OS_CPU_SOLARIS_X86_VM_ORDERACCESS_SOLARIS_X86_INLINE_HPP |
|