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1 #ifndef SkAtomics_atomic_DEFINED | 1 #ifndef SkAtomics_atomic_DEFINED |
2 #define SkAtomics_atomic_DEFINED | 2 #define SkAtomics_atomic_DEFINED |
3 | 3 |
4 template <typename T> | 4 template <typename T> |
5 T sk_atomic_load(const T* ptr, sk_memory_order mo) { | 5 T sk_atomic_load(const T* ptr, sk_memory_order mo) { |
| 6 SkASSERT(mo == sk_memory_order_relaxed || |
| 7 mo == sk_memory_order_seq_cst || |
| 8 mo == sk_memory_order_acquire || |
| 9 mo == sk_memory_order_consume); |
6 return __atomic_load_n(ptr, mo); | 10 return __atomic_load_n(ptr, mo); |
7 } | 11 } |
8 | 12 |
9 template <typename T> | 13 template <typename T> |
10 void sk_atomic_store(T* ptr, T val, sk_memory_order mo) { | 14 void sk_atomic_store(T* ptr, T val, sk_memory_order mo) { |
| 15 SkASSERT(mo == sk_memory_order_relaxed || |
| 16 mo == sk_memory_order_seq_cst || |
| 17 mo == sk_memory_order_release); |
11 __atomic_store_n(ptr, val, mo); | 18 __atomic_store_n(ptr, val, mo); |
12 } | 19 } |
13 | 20 |
14 template <typename T> | 21 template <typename T> |
15 T sk_atomic_fetch_add(T* ptr, T val, sk_memory_order mo) { | 22 T sk_atomic_fetch_add(T* ptr, T val, sk_memory_order mo) { |
| 23 // All values of mo are valid. |
16 return __atomic_fetch_add(ptr, val, mo); | 24 return __atomic_fetch_add(ptr, val, mo); |
17 } | 25 } |
18 | 26 |
19 template <typename T> | 27 template <typename T> |
20 bool sk_atomic_compare_exchange(T* ptr, T* expected, T desired, | 28 bool sk_atomic_compare_exchange(T* ptr, T* expected, T desired, |
21 sk_memory_order success, | 29 sk_memory_order success, |
22 sk_memory_order failure) { | 30 sk_memory_order failure) { |
| 31 // All values of success are valid. |
| 32 SkASSERT(failure == sk_memory_order_relaxed || |
| 33 failure == sk_memory_order_seq_cst || |
| 34 failure == sk_memory_order_acquire || |
| 35 failure == sk_memory_order_consume); |
| 36 SkASSERT(failure <= success); |
23 return __atomic_compare_exchange_n(ptr, expected, desired, false/*weak?*/, s
uccess, failure); | 37 return __atomic_compare_exchange_n(ptr, expected, desired, false/*weak?*/, s
uccess, failure); |
24 } | 38 } |
25 | 39 |
26 #endif//SkAtomics_atomic_DEFINED | 40 #endif//SkAtomics_atomic_DEFINED |
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