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/**
* hdr_atomic.h
* Written by Philip Orwig and released to the public domain,
* as explained at http://creativecommons.org/publicdomain/zero/1.0/
*/
#ifndef HDR_ATOMIC_H__
#define HDR_ATOMIC_H__
#if defined(_MSC_VER)
#include <stdint.h>
#include <intrin.h>
static void __inline * hdr_atomic_load_pointer(void** pointer)
{
_ReadBarrier();
return *pointer;
}
static void hdr_atomic_store_pointer(void** pointer, void* value)
{
_WriteBarrier();
*pointer = value;
}
static int64_t __inline hdr_atomic_load_64(int64_t* field)
{
_ReadBarrier();
return *field;
}
static void __inline hdr_atomic_store_64(int64_t* field, int64_t value)
{
_WriteBarrier();
*field = value;
}
static int64_t __inline hdr_atomic_exchange_64(volatile int64_t* field, int64_t initial)
{
return _InterlockedExchange64(field, initial);
}
static int64_t __inline hdr_atomic_add_fetch_64(volatile int64_t* field, int64_t value)
{
return _InterlockedExchangeAdd64(field, value) + value;
}
#else
#define hdr_atomic_load_pointer(x) __atomic_load_n(x, __ATOMIC_SEQ_CST)
#define hdr_atomic_store_pointer(f,v) __atomic_store_n(f,v, __ATOMIC_SEQ_CST)
#define hdr_atomic_load_64(x) __atomic_load_n(x, __ATOMIC_SEQ_CST)
#define hdr_atomic_store_64(f,v) __atomic_store_n(f,v, __ATOMIC_SEQ_CST)
#define hdr_atomic_exchange_64(f,i) __atomic_exchange_n(f,i, __ATOMIC_SEQ_CST)
#define hdr_atomic_add_fetch_64(field, value) __atomic_add_fetch(field, value, __ATOMIC_SEQ_CST)
#endif
#endif /* HDR_ATOMIC_H__ */
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