diff options
Diffstat (limited to 'src/ports/SkThread_win.cpp')
| -rw-r--r-- | src/ports/SkThread_win.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/ports/SkThread_win.cpp b/src/ports/SkThread_win.cpp index e833314843..7d091d2a67 100644 --- a/src/ports/SkThread_win.cpp +++ b/src/ports/SkThread_win.cpp @@ -16,7 +16,7 @@ //intrinsic, include intrin.h and put the function in a #pragma intrinsic //directive. //The pragma appears to be unnecessary, but doesn't hurt. -#pragma intrinsic(_InterlockedIncrement, _InterlockedDecrement) +#pragma intrinsic(_InterlockedIncrement, _InterlockedAdd, _InterlockedDecrement) #pragma intrinsic(_InterlockedCompareExchange) int32_t sk_atomic_inc(int32_t* addr) { @@ -24,6 +24,12 @@ int32_t sk_atomic_inc(int32_t* addr) { return _InterlockedIncrement(reinterpret_cast<LONG*>(addr)) - 1; } +int32_t sk_atomic_add(int32_t* addr, int32_t inc) { + // InterlockedAdd returns the new value, we want to return the old. + LONG value = reinterpret_cast<LONG>(inc); + return _InterlockedAdd(reinterpret_cast<LONG*>(addr), value) - value; +} + int32_t sk_atomic_dec(int32_t* addr) { return _InterlockedDecrement(reinterpret_cast<LONG*>(addr)) + 1; } |