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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_win_DEFINED | 8 #ifndef SkAtomics_win_DEFINED |
9 #define SkAtomics_win_DEFINED | 9 #define SkAtomics_win_DEFINED |
10 | 10 |
11 /** Windows Interlocked atomics. */ | 11 /** Windows Interlocked atomics. */ |
12 | 12 |
13 #include <intrin.h> | 13 #include <intrin.h> |
14 #include <stdint.h> | 14 #include <stdint.h> |
15 | 15 |
16 //MSDN says in order to declare an interlocked function for use as an | 16 //MSDN says in order to declare an interlocked function for use as an |
17 //intrinsic, include intrin.h and put the function in a #pragma intrinsic | 17 //intrinsic, include intrin.h and put the function in a #pragma intrinsic |
18 //directive. | 18 //directive. |
19 //The pragma appears to be unnecessary, but doesn't hurt. | 19 //The pragma appears to be unnecessary, but doesn't hurt. |
20 #pragma intrinsic(_InterlockedIncrement, _InterlockedExchangeAdd, _InterlockedDe
crement) | 20 #pragma intrinsic(_InterlockedIncrement, _InterlockedExchangeAdd, _InterlockedDe
crement) |
21 #pragma intrinsic(_InterlockedCompareExchange) | 21 #pragma intrinsic(_InterlockedCompareExchange) |
22 | 22 |
23 static inline int32_t sk_atomic_inc(int32_t* addr) { | 23 static inline int32_t sk_atomic_inc(int32_t* addr) { |
24 // InterlockedIncrement returns the new value, we want to return the old. | 24 // InterlockedIncrement returns the new value, we want to return the old. |
25 return _InterlockedIncrement(reinterpret_cast<long*>(addr)) - 1; | 25 return _InterlockedIncrement(reinterpret_cast<long*>(addr)) - 1; |
26 } | 26 } |
27 | 27 |
| 28 static inline int64_t sk_atomic_inc(int64_t* addr) { |
| 29 // InterlockedIncrement returns the new value, we want to return the old. |
| 30 return InterlockedIncrement64(addr) - 1; |
| 31 } |
| 32 |
28 static inline int32_t sk_atomic_add(int32_t* addr, int32_t inc) { | 33 static inline int32_t sk_atomic_add(int32_t* addr, int32_t inc) { |
29 return _InterlockedExchangeAdd(reinterpret_cast<long*>(addr), static_cast<lo
ng>(inc)); | 34 return _InterlockedExchangeAdd(reinterpret_cast<long*>(addr), static_cast<lo
ng>(inc)); |
30 } | 35 } |
31 | 36 |
| 37 static inline int64_t sk_atomic_add(int64_t* addr, int64_t inc) { |
| 38 return InterlockedExchangeAdd64(addr, inc); |
| 39 } |
| 40 |
32 static inline int32_t sk_atomic_dec(int32_t* addr) { | 41 static inline int32_t sk_atomic_dec(int32_t* addr) { |
33 // InterlockedDecrement returns the new value, we want to return the old. | 42 // InterlockedDecrement returns the new value, we want to return the old. |
34 return _InterlockedDecrement(reinterpret_cast<long*>(addr)) + 1; | 43 return _InterlockedDecrement(reinterpret_cast<long*>(addr)) + 1; |
35 } | 44 } |
36 | 45 |
| 46 static inline int64_t sk_atomic_dec(int64_t* addr) { |
| 47 // InterlockedDecrement returns the new value, we want to return the old. |
| 48 return InterlockedDecrement64(addr) + 1; |
| 49 } |
| 50 |
37 static inline void sk_membar_acquire__after_atomic_dec() { } | 51 static inline void sk_membar_acquire__after_atomic_dec() { } |
38 | 52 |
39 static inline bool sk_atomic_cas(int32_t* addr, int32_t before, int32_t after) { | 53 static inline bool sk_atomic_cas(int32_t* addr, int32_t before, int32_t after) { |
40 return _InterlockedCompareExchange(reinterpret_cast<long*>(addr), after, bef
ore) == before; | 54 return _InterlockedCompareExchange(reinterpret_cast<long*>(addr), after, bef
ore) == before; |
41 } | 55 } |
42 | 56 |
| 57 static inline bool sk_atomic_cas(int64_t* addr, int64_t before, int64_t after) { |
| 58 return _InterlockedCompareExchange64(addr, after, before) == before; |
| 59 } |
| 60 |
43 static inline void* sk_atomic_cas(void** addr, void* before, void* after) { | 61 static inline void* sk_atomic_cas(void** addr, void* before, void* after) { |
44 return InterlockedCompareExchangePointer(addr, after, before); | 62 return InterlockedCompareExchangePointer(addr, after, before); |
45 } | 63 } |
46 | 64 |
47 static inline void sk_membar_acquire__after_atomic_conditional_inc() { } | 65 static inline void sk_membar_acquire__after_atomic_conditional_inc() { } |
48 | 66 |
49 #endif | 67 #endif |
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