#define avpriv_atomic_int_get atomic_int_get_gcc
static inline int atomic_int_get_gcc(volatile int *ptr)
{
-#if HAVE_ATOMIC_COMPARE_EXCHANGE
- return __atomic_load_n(ptr, __ATOMIC_SEQ_CST);
-#else
__sync_synchronize();
return *ptr;
-#endif
}
#define avpriv_atomic_int_set atomic_int_set_gcc
static inline void atomic_int_set_gcc(volatile int *ptr, int val)
{
-#if HAVE_ATOMIC_COMPARE_EXCHANGE
- __atomic_store_n(ptr, val, __ATOMIC_SEQ_CST);
-#else
*ptr = val;
__sync_synchronize();
-#endif
}
#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_gcc
static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc)
{
-#if HAVE_ATOMIC_COMPARE_EXCHANGE
- return __atomic_add_fetch(ptr, inc, __ATOMIC_SEQ_CST);
-#else
return __sync_add_and_fetch(ptr, inc);
-#endif
}
#define avpriv_atomic_ptr_cas atomic_ptr_cas_gcc
static inline void *atomic_ptr_cas_gcc(void * volatile *ptr,
void *oldval, void *newval)
{
-#if HAVE_SYNC_VAL_COMPARE_AND_SWAP
#ifdef __ARMCC_VERSION
// armcc will throw an error if ptr is not an integer type
volatile uintptr_t *tmp = (volatile uintptr_t*)ptr;
#else
return __sync_val_compare_and_swap(ptr, oldval, newval);
#endif
-#else
- __atomic_compare_exchange_n(ptr, &oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
- return oldval;
-#endif
}
#endif /* AVUTIL_ATOMIC_GCC_H */