Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // This file is an internal atomic implementation, use atomicops.h instead. |
| 6 | |
| 7 | #ifndef V8_BASE_ATOMICOPS_INTERNALS_PORTABLE_H_ |
| 8 | #define V8_BASE_ATOMICOPS_INTERNALS_PORTABLE_H_ |
| 9 | |
| 10 | namespace v8 { |
| 11 | namespace base { |
| 12 | |
| 13 | inline void MemoryBarrier() { __sync_synchronize(); } |
| 14 | |
| 15 | inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr, |
| 16 | Atomic32 old_value, |
| 17 | Atomic32 new_value) { |
| 18 | return __sync_val_compare_and_swap(ptr, old_value, new_value); |
| 19 | } |
| 20 | |
| 21 | inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr, |
| 22 | Atomic32 new_value) { |
| 23 | return __sync_lock_test_and_set(ptr, new_value); |
| 24 | } |
| 25 | |
| 26 | inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr, |
| 27 | Atomic32 increment) { |
| 28 | return __sync_add_and_fetch(ptr, increment); |
| 29 | } |
| 30 | |
| 31 | inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr, |
| 32 | Atomic32 increment) { |
| 33 | return __sync_add_and_fetch(ptr, increment); |
| 34 | } |
| 35 | |
| 36 | inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr, |
| 37 | Atomic32 old_value, Atomic32 new_value) { |
| 38 | return __sync_val_compare_and_swap(ptr, old_value, new_value); |
| 39 | } |
| 40 | |
| 41 | inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr, |
| 42 | Atomic32 old_value, Atomic32 new_value) { |
| 43 | return __sync_val_compare_and_swap(ptr, old_value, new_value); |
| 44 | } |
| 45 | |
| 46 | inline void NoBarrier_Store(volatile Atomic8* ptr, Atomic8 value) { |
| 47 | __sync_lock_test_and_set(ptr, value); |
| 48 | } |
| 49 | |
| 50 | inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) { |
| 51 | __sync_lock_test_and_set(ptr, value); |
| 52 | } |
| 53 | |
| 54 | inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) { |
| 55 | __sync_lock_test_and_set(ptr, value); |
| 56 | } |
| 57 | |
| 58 | inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) { |
| 59 | __sync_lock_test_and_set(ptr, value); |
| 60 | } |
| 61 | |
| 62 | inline Atomic8 NoBarrier_Load(volatile const Atomic8* ptr) { |
| 63 | return __sync_add_and_fetch(ptr, 0); |
| 64 | } |
| 65 | |
| 66 | inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) { |
| 67 | return __sync_add_and_fetch(ptr, 0); |
| 68 | } |
| 69 | |
| 70 | inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) { |
| 71 | return __sync_add_and_fetch(ptr, 0); |
| 72 | } |
| 73 | |
| 74 | inline Atomic32 Release_Load(volatile const Atomic32* ptr) { |
| 75 | return __sync_add_and_fetch(ptr, 0); |
| 76 | } |
| 77 | |
| 78 | // 64-bit versions of the operations. |
| 79 | // See the 32-bit versions for comments. |
| 80 | |
| 81 | inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr, |
| 82 | Atomic64 old_value, |
| 83 | Atomic64 new_value) { |
| 84 | return __sync_val_compare_and_swap(ptr, old_value, new_value); |
| 85 | } |
| 86 | |
| 87 | inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr, |
| 88 | Atomic64 new_value) { |
| 89 | return __sync_lock_test_and_set(ptr, new_value); |
| 90 | } |
| 91 | |
| 92 | inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr, |
| 93 | Atomic64 increment) { |
| 94 | return __sync_add_and_fetch(ptr, increment); |
| 95 | } |
| 96 | |
| 97 | inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr, |
| 98 | Atomic64 increment) { |
| 99 | return __sync_add_and_fetch(ptr, increment); |
| 100 | } |
| 101 | |
| 102 | inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr, |
| 103 | Atomic64 old_value, Atomic64 new_value) { |
| 104 | return __sync_val_compare_and_swap(ptr, old_value, new_value); |
| 105 | } |
| 106 | |
| 107 | inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr, |
| 108 | Atomic64 old_value, Atomic64 new_value) { |
| 109 | return __sync_val_compare_and_swap(ptr, old_value, new_value); |
| 110 | } |
| 111 | |
| 112 | inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) { |
| 113 | __sync_lock_test_and_set(ptr, value); |
| 114 | } |
| 115 | |
| 116 | inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) { |
| 117 | __sync_lock_test_and_set(ptr, value); |
| 118 | } |
| 119 | |
| 120 | inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) { |
| 121 | __sync_lock_test_and_set(ptr, value); |
| 122 | } |
| 123 | |
| 124 | inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) { |
| 125 | return __sync_add_and_fetch(ptr, 0); |
| 126 | } |
| 127 | |
| 128 | inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) { |
| 129 | return __sync_add_and_fetch(ptr, 0); |
| 130 | } |
| 131 | |
| 132 | inline Atomic64 Release_Load(volatile const Atomic64* ptr) { |
| 133 | return __sync_add_and_fetch(ptr, 0); |
| 134 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 135 | } // namespace base |
| 136 | } // namespace v8 |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 137 | |
| 138 | #endif // V8_BASE_ATOMICOPS_INTERNALS_PORTABLE_H_ |