The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/ports/SkAtomics_none.h
gfx/skia/trunk/src/ports/SkAtomics_none.h
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- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:9c2c858d5486 |
|---|---|
| 1 /* | |
| 2 * Copyright 2013 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef SkAtomics_none_DEFINED | |
| 9 #define SkAtomics_none_DEFINED | |
| 10 | |
| 11 /** Non-atomic atomics for uniprocessor systems. */ | |
| 12 | |
| 13 #include <stdint.h> | |
| 14 | |
| 15 static inline int32_t sk_atomic_inc(int32_t* addr) { | |
| 16 int32_t value = *addr; | |
| 17 *addr = value + 1; | |
| 18 return value; | |
| 19 } | |
| 20 | |
| 21 static inline int32_t sk_atomic_add(int32_t* addr, int32_t inc) { | |
| 22 int32_t value = *addr; | |
| 23 *addr = value + inc; | |
| 24 return value; | |
| 25 } | |
| 26 | |
| 27 static inline int32_t sk_atomic_dec(int32_t* addr) { | |
| 28 int32_t value = *addr; | |
| 29 *addr = value - 1; | |
| 30 return value; | |
| 31 } | |
| 32 | |
| 33 static inline void sk_membar_acquire__after_atomic_dec() { } | |
| 34 | |
| 35 static inline int32_t sk_atomic_conditional_inc(int32_t* addr) { | |
| 36 int32_t value = *addr; | |
| 37 if (value != 0) ++*addr; | |
| 38 return value; | |
| 39 } | |
| 40 | |
| 41 static inline bool sk_atomic_cas(int32_t* addr, int32_t before, int32_t after) { | |
| 42 if (*addr != before) return false; | |
| 43 *addr = after; | |
| 44 return true; | |
| 45 } | |
| 46 | |
| 47 static inline void sk_membar_acquire__after_atomic_conditional_inc() { } | |
| 48 | |
| 49 #endif |
