1 /*
2 * Copyright (c) 2003, 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 *
30 // Implementation of class OrderAccess.
31
32 // A compiler barrier, forcing the C++ compiler to invalidate all memory assumptions
33 static inline void compiler_barrier() {
34 __asm__ volatile ("" : : : "memory");
35 }
36
37 // Assume TSO.
38
39 inline void OrderAccess::loadload() { compiler_barrier(); }
40 inline void OrderAccess::storestore() { compiler_barrier(); }
41 inline void OrderAccess::loadstore() { compiler_barrier(); }
42 inline void OrderAccess::storeload() { fence(); }
43
44 inline void OrderAccess::acquire() { compiler_barrier(); }
45 inline void OrderAccess::release() { compiler_barrier(); }
46
47 inline void OrderAccess::fence() {
48 __asm__ volatile ("membar #StoreLoad" : : : "memory");
49 }
50
51 #define VM_HAS_GENERALIZED_ORDER_ACCESS 1
52
53 #endif // OS_CPU_LINUX_SPARC_VM_ORDERACCESS_LINUX_SPARC_INLINE_HPP
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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 *
30 // Implementation of class OrderAccess.
31
32 // A compiler barrier, forcing the C++ compiler to invalidate all memory assumptions
33 static inline void compiler_barrier() {
34 __asm__ volatile ("" : : : "memory");
35 }
36
37 // Assume TSO.
38
39 inline void OrderAccess::loadload() { compiler_barrier(); }
40 inline void OrderAccess::storestore() { compiler_barrier(); }
41 inline void OrderAccess::loadstore() { compiler_barrier(); }
42 inline void OrderAccess::storeload() { fence(); }
43
44 inline void OrderAccess::acquire() { compiler_barrier(); }
45 inline void OrderAccess::release() { compiler_barrier(); }
46
47 inline void OrderAccess::fence() {
48 __asm__ volatile ("membar #StoreLoad" : : : "memory");
49 }
50
51 #endif // OS_CPU_LINUX_SPARC_VM_ORDERACCESS_LINUX_SPARC_INLINE_HPP
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