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/******************************************************************************/
#ifdef JEMALLOC_H_TYPES
#endif /* JEMALLOC_H_TYPES */
/******************************************************************************/
#ifdef JEMALLOC_H_STRUCTS
#endif /* JEMALLOC_H_STRUCTS */
/******************************************************************************/
#ifdef JEMALLOC_H_EXTERNS
#define atomic_read_uint64(p) atomic_add_uint64(p, 0)
#define atomic_read_uint32(p) atomic_add_uint32(p, 0)
#if (LG_SIZEOF_PTR == 3)
# define atomic_read_z(p) \
(size_t)atomic_add_uint64((uint64_t *)p, (uint64_t)0)
# define atomic_add_z(p, x) \
(size_t)atomic_add_uint64((uint64_t *)p, (uint64_t)x)
# define atomic_sub_z(p, x) \
(size_t)atomic_sub_uint64((uint64_t *)p, (uint64_t)x)
#elif (LG_SIZEOF_PTR == 2)
# define atomic_read_z(p) \
(size_t)atomic_add_uint32((uint32_t *)p, (uint32_t)0)
# define atomic_add_z(p, x) \
(size_t)atomic_add_uint32((uint32_t *)p, (uint32_t)x)
# define atomic_sub_z(p, x) \
(size_t)atomic_sub_uint32((uint32_t *)p, (uint32_t)x)
#endif
#endif /* JEMALLOC_H_EXTERNS */
/******************************************************************************/
#ifdef JEMALLOC_H_INLINES
#ifndef JEMALLOC_ENABLE_INLINE
uint64_t atomic_add_uint64(uint64_t *p, uint64_t x);
uint64_t atomic_sub_uint64(uint64_t *p, uint64_t x);
uint32_t atomic_add_uint32(uint32_t *p, uint32_t x);
uint32_t atomic_sub_uint32(uint32_t *p, uint32_t x);
#endif
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_ATOMIC_C_))
/******************************************************************************/
/* 64-bit operations. */
#ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8
JEMALLOC_INLINE uint64_t
atomic_add_uint64(uint64_t *p, uint64_t x)
{
return (__sync_add_and_fetch(p, x));
}
JEMALLOC_INLINE uint64_t
atomic_sub_uint64(uint64_t *p, uint64_t x)
{
return (__sync_sub_and_fetch(p, x));
}
#elif (defined(JEMALLOC_OSATOMIC))
JEMALLOC_INLINE uint64_t
atomic_add_uint64(uint64_t *p, uint64_t x)
{
return (OSAtomicAdd64((int64_t)x, (int64_t *)p));
}
JEMALLOC_INLINE uint64_t
atomic_sub_uint64(uint64_t *p, uint64_t x)
{
return (OSAtomicAdd64(-((int64_t)x), (int64_t *)p));
}
#elif (defined(__amd64__) || defined(__x86_64__))
JEMALLOC_INLINE uint64_t
atomic_add_uint64(uint64_t *p, uint64_t x)
{
asm volatile (
"lock; xaddq %0, %1;"
: "+r" (x), "=m" (*p) /* Outputs. */
: "m" (*p) /* Inputs. */
);
return (x);
}
JEMALLOC_INLINE uint64_t
atomic_sub_uint64(uint64_t *p, uint64_t x)
{
x = (uint64_t)(-(int64_t)x);
asm volatile (
"lock; xaddq %0, %1;"
: "+r" (x), "=m" (*p) /* Outputs. */
: "m" (*p) /* Inputs. */
);
return (x);
}
#else
# if (LG_SIZEOF_PTR == 3)
# error "Missing implementation for 64-bit atomic operations"
# endif
#endif
/******************************************************************************/
/* 32-bit operations. */
#ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
JEMALLOC_INLINE uint32_t
atomic_add_uint32(uint32_t *p, uint32_t x)
{
return (__sync_add_and_fetch(p, x));
}
JEMALLOC_INLINE uint32_t
atomic_sub_uint32(uint32_t *p, uint32_t x)
{
return (__sync_sub_and_fetch(p, x));
}
#elif (defined(JEMALLOC_OSATOMIC))
JEMALLOC_INLINE uint32_t
atomic_add_uint32(uint32_t *p, uint32_t x)
{
return (OSAtomicAdd32((int32_t)x, (int32_t *)p));
}
JEMALLOC_INLINE uint32_t
atomic_sub_uint32(uint32_t *p, uint32_t x)
{
return (OSAtomicAdd32(-((int32_t)x), (int32_t *)p));
}
#elif (defined(__i386__) || defined(__amd64__) || defined(__x86_64__))
JEMALLOC_INLINE uint32_t
atomic_add_uint32(uint32_t *p, uint32_t x)
{
asm volatile (
"lock; xaddl %0, %1;"
: "+r" (x), "=m" (*p) /* Outputs. */
: "m" (*p) /* Inputs. */
);
return (x);
}
JEMALLOC_INLINE uint32_t
atomic_sub_uint32(uint32_t *p, uint32_t x)
{
x = (uint32_t)(-(int32_t)x);
asm volatile (
"lock; xaddl %0, %1;"
: "+r" (x), "=m" (*p) /* Outputs. */
: "m" (*p) /* Inputs. */
);
return (x);
}
#elif (defined __SH4__ || defined __mips__) && (__GNUC__ > 4 || \
(__GNUC__ == 4 && (__GNUC_MINOR__ > 1 || (__GNUC_MINOR__ == 1 && \
__GNUC_PATCHLEVEL__ > 1))))
JEMALLOC_INLINE uint32_t
atomic_add_uint32(uint32_t *p, uint32_t x)
{
return (__sync_add_and_fetch(p, x));
}
JEMALLOC_INLINE uint32_t
atomic_sub_uint32(uint32_t *p, uint32_t x)
{
return (__sync_sub_and_fetch(p, x));
}
#else
# error "Missing implementation for 32-bit atomic operations"
#endif
#endif
#endif /* JEMALLOC_H_INLINES */
/******************************************************************************/
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