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atomic: fix CAS with armcc.

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On the current code, armcc will fail with:
"libavutil/atomic_gcc.h", line 52: Error:  #2771: first argument must be
a pointer to integer or enumeration type
This commit is contained in:
Anton Khirnov 2013-03-08 20:57:31 +01:00
parent 486f0b0cfc
commit 6327c10702
1 changed files with 8 additions and 0 deletions
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8
libavutil/atomic_gcc.h
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@ -21,6 +21,8 @@
#ifndef AVUTIL_ATOMIC_GCC_H
#define AVUTIL_ATOMIC_GCC_H
#include <stdint.h>
#include "atomic.h"
#define avpriv_atomic_int_get atomic_int_get_gcc
@ -47,7 +49,13 @@ static inline int atomic_int_add_and_fetch_gcc(volatile int *ptr, int inc)
static inline void *atomic_ptr_cas_gcc(void * volatile *ptr,
void *oldval, void *newval)
{
#ifdef __ARMCC_VERSION
// armcc will throw an error if ptr is not an integer type
volatile uintptr_t *tmp = (volatile uintptr_t*)ptr;
return (void*)__sync_val_compare_and_swap(tmp, oldval, newval);
#else
return __sync_val_compare_and_swap(ptr, oldval, newval);
#endif
}
#endif /* AVUTIL_ATOMIC_GCC_H */