| #include <intrin.h> |
| |
| #ifdef _WIN64 |
| __int64 _InterlockedDecrement64(__int64 volatile *Addend) |
| { |
| __int64 ret = -1LL; |
| __asm__ __volatile__ ("lock\n\t" |
| "xaddq %0,%1" |
| : "+r" (ret), "+m" (*Addend) |
| : : "memory"); |
| return ret - 1LL; |
| } |
| #else |
| __int64 __stdcall InterlockedCompareExchange64(__int64 volatile *Destination, |
| __int64 Exchange, __int64 Comperand); |
| __int64 _InterlockedDecrement64(__int64 volatile *Addend); |
| __int64 _InterlockedDecrement64(__int64 volatile *Addend) |
| { |
| __int64 Old; |
| do { |
| Old = *Addend; |
| } while(InterlockedCompareExchange64(Addend,Old - 1,Old)!=Old); |
| return Old - 1; |
| } |
| #endif |
| |
| #ifdef _WIN64 |
| __int64 InterlockedDecrement64(__int64 volatile *) __attribute__((alias("_InterlockedDecrement64"))); |
| #else |
| __int64 __stdcall InterlockedDecrement64(__int64 volatile *Addend); |
| __int64 __stdcall InterlockedDecrement64(__int64 volatile *Addend) |
| { |
| return _InterlockedDecrement64(Addend); |
| } |
| #endif |
| |
