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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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_sync_DEFINED | 8 #ifndef SkAtomics_sync_DEFINED |
9 #define SkAtomics_sync_DEFINED | 9 #define SkAtomics_sync_DEFINED |
10 | 10 |
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37 int32_t before = __sync_val_compare_and_swap(addr, value, value + 1); | 37 int32_t before = __sync_val_compare_and_swap(addr, value, value + 1); |
38 | 38 |
39 if (before == value) { | 39 if (before == value) { |
40 return value; | 40 return value; |
41 } else { | 41 } else { |
42 value = before; | 42 value = before; |
43 } | 43 } |
44 } | 44 } |
45 } | 45 } |
46 | 46 |
| 47 static inline __attribute__((always_inline)) bool sk_atomic_cas(int32_t* addr, |
| 48 int32_t before, |
| 49 int32_t after) { |
| 50 return __sync_bool_compare_and_swap(addr, before, after); |
| 51 } |
| 52 |
47 static inline __attribute__((always_inline)) void sk_membar_acquire__after_atomi
c_conditional_inc() { } | 53 static inline __attribute__((always_inline)) void sk_membar_acquire__after_atomi
c_conditional_inc() { } |
48 | 54 |
49 #endif | 55 #endif |
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