Interlocked 系列函数的实现

#include <intrin.h>#pragma intrinsic(_ReadWriteBarrier)inline void HcPause(int32_t delay) {#if _M_IX86 _asm { mov eax, delay L1: pause add eax, -1 jne L1 }#elif ((__linux__ || __FreeBSD__)&& (__i386__))for (int32_t i = 0; i < delay; i++) { __asm__ __volatile__("pause;"); }#elif _AIX HcYield();#endif return;}inline int32_t AtomicCmpswp(volatile void *addr, int32_t new_value, int32_t comparand) {#if _M_IX86_ReadWriteBarrier(); __asm {mov edx, addr mov ecx, new_value mov eax, comparand lock cmpxchg[edx], ecx }_ReadWriteBarrier();//return InterlockedCompareExchange((LPLONG)addr, new_value, comparand);#elif _AIX __asm__ __volatile__ ("sync/n"); // memory release operation compare_and_swap((atomic_p)addr, &comparand, new_value); __asm__ __volatile__ ("sync/n"); // memory acquire operation return comparand;#endif}inline int32_t AtomicFetchAdd(volatile void *addr, int32_t addend) {#if _M_IX86 int32_t result; __asm { mov edx, addr mov eax, addend lock xadd [edx], eax mov result, eax } return result;//return InterlockedExchangeAdd((LPLONG)addr, addend);#elif _AIX __asm__ __volatile__ ("sync/n"); // memory release operation fetch_and_add((atomic_p)addr, addend); __asm__ __volatile__ ("sync/n"); // memory acquire operation#endif}inline int32_t AtomicFetchStore(volatile void *addr, int32_t value) { int32_t result; __asm { mov edx, addr mov eax, value lock xchg [edx], eax mov result, eax } return result;//return InterlockedExchange((LPLONG)addr, new_value, comparand);}inline int32_t AtomicFetchIncr(volatile void *addr) {#if _WIN32return InterlockedIncrement((LPLONG)addr);#elif _AIXreturn (int32_t)fetch_and_add32((atomic_p)addr, 1) + 1;#endif}extern inline int32_t AtomicFetchDecr(volatile void *addr) {#if _WIN32return InterlockedDecrement((LPLONG)addr);#elif _AIXreturn (int32_t)fetch_and_add32((atomic_p)addr, -1) - 1;#endif}