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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkAtomics_atomic_DEFINED | 8 #ifndef SkAtomics_atomic_DEFINED |
9 #define SkAtomics_atomic_DEFINED | 9 #define SkAtomics_atomic_DEFINED |
10 | 10 |
(...skipping 14 matching lines...) Expand all Loading... |
25 __atomic_store_n(ptr, val, mo); | 25 __atomic_store_n(ptr, val, mo); |
26 } | 26 } |
27 | 27 |
28 template <typename T> | 28 template <typename T> |
29 T sk_atomic_fetch_add(T* ptr, T val, sk_memory_order mo) { | 29 T sk_atomic_fetch_add(T* ptr, T val, sk_memory_order mo) { |
30 // All values of mo are valid. | 30 // All values of mo are valid. |
31 return __atomic_fetch_add(ptr, val, mo); | 31 return __atomic_fetch_add(ptr, val, mo); |
32 } | 32 } |
33 | 33 |
34 template <typename T> | 34 template <typename T> |
| 35 T sk_atomic_fetch_sub(T* ptr, T val, sk_memory_order mo) { |
| 36 // All values of mo are valid. |
| 37 return __atomic_fetch_sub(ptr, val, mo); |
| 38 } |
| 39 |
| 40 template <typename T> |
35 bool sk_atomic_compare_exchange(T* ptr, T* expected, T desired, | 41 bool sk_atomic_compare_exchange(T* ptr, T* expected, T desired, |
36 sk_memory_order success, | 42 sk_memory_order success, |
37 sk_memory_order failure) { | 43 sk_memory_order failure) { |
38 // All values of success are valid. | 44 // All values of success are valid. |
39 SkASSERT(failure == sk_memory_order_relaxed || | 45 SkASSERT(failure == sk_memory_order_relaxed || |
40 failure == sk_memory_order_seq_cst || | 46 failure == sk_memory_order_seq_cst || |
41 failure == sk_memory_order_acquire || | 47 failure == sk_memory_order_acquire || |
42 failure == sk_memory_order_consume); | 48 failure == sk_memory_order_consume); |
43 SkASSERT(failure <= success); | 49 SkASSERT(failure <= success); |
44 return __atomic_compare_exchange_n(ptr, expected, desired, false/*weak?*/, s
uccess, failure); | 50 return __atomic_compare_exchange_n(ptr, expected, desired, false/*weak?*/, s
uccess, failure); |
45 } | 51 } |
46 | 52 |
47 template <typename T> | 53 template <typename T> |
48 T sk_atomic_exchange(T* ptr, T val, sk_memory_order mo) { | 54 T sk_atomic_exchange(T* ptr, T val, sk_memory_order mo) { |
49 // All values of mo are valid. | 55 // All values of mo are valid. |
50 return __atomic_exchange_n(ptr, val, mo); | 56 return __atomic_exchange_n(ptr, val, mo); |
51 } | 57 } |
52 | 58 |
53 #endif//SkAtomics_atomic_DEFINED | 59 #endif//SkAtomics_atomic_DEFINED |
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