Viewing file:  atomic.h (2.19 KB) -rw-r--r--
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#ifndef SW_ATOMIC_H_
#define SW_ATOMIC_H_
#ifdef _WIN32
typedef int32_t sw_atomic_int32_t;
typedef uint32_t sw_atomic_uint32_t;
typedef int64_t sw_atomic_int64_t;
typedef uint64_t sw_atomic_uint64_t;
typedef sw_atomic_uint32_t sw_atomic_t;
typedef sw_atomic_uint64_t sw_atomic_long_t;
static inline sw_atomic_t sw_atomic_cmp_set(sw_atomic_t *lock, sw_atomic_t old, sw_atomic_t set)
{
if (*lock == old) {
*lock = set;
return 1;
}
return 0;
}
static inline sw_atomic_t sw_atomic_fetch_add(sw_atomic_t *value, sw_atomic_t add)
{
sw_atomic_t old;
old = *value;
*value += add;
return old;
}
#define sw_memory_barrier()
#define sw_atomic_cpu_pause()
#else
typedef volatile int32_t sw_atomic_int32_t;
typedef volatile uint32_t sw_atomic_uint32_t;
#ifdef __x86_64__
typedef volatile int64_t sw_atomic_int64_t;
typedef volatile uint64_t sw_atomic_uint64_t;
#endif
#ifdef __x86_64__
typedef sw_atomic_int64_t sw_atomic_long_t;
typedef sw_atomic_uint64_t sw_atomic_ulong_t;
#else
typedef sw_atomic_int32_t sw_atomic_long_t;
typedef sw_atomic_uint32_t sw_atomic_ulong_t;
#endif
typedef sw_atomic_uint32_t sw_atomic_t;
#define sw_atomic_cmp_set(lock, old, set) __sync_bool_compare_and_swap(lock, old, set)
#define sw_atomic_fetch_add(value, add) __sync_fetch_and_add(value, add)
#define sw_atomic_fetch_sub(value, sub) __sync_fetch_and_sub(value, sub)
#define sw_atomic_memory_barrier() __sync_synchronize()
#define sw_atomic_add_fetch(value, add) __sync_add_and_fetch(value, add)
#define sw_atomic_sub_fetch(value, sub) __sync_sub_and_fetch(value, sub)
#ifdef __arm__
#define sw_atomic_cpu_pause() __asm__ __volatile__ ("NOP");
#elif defined(__x86_64__)
#define sw_atomic_cpu_pause() __asm__ __volatile__ ("pause")
#else
#define sw_atomic_cpu_pause()
#endif
#if 0
#define sw_spinlock_release(lock) __sync_lock_release(lock)
#else
#define sw_spinlock_release(lock) *(lock) = 0
#endif
#endif
#endif
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