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/*-
* Copyright (c) 2014-2015 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#define WT_SIZET_FMT "zu" /* size_t format string */
#define WT_COMPILER_TYPE_ALIGN(x)
#define WT_PACKED_STRUCT_BEGIN(name) \
struct name {
#define WT_PACKED_STRUCT_END \
};
#define WT_GCC_FUNC_ATTRIBUTE(x)
#define WT_GCC_FUNC_DECL_ATTRIBUTE(x)
#define WT_ATOMIC_FUNC(name, ret, type) \
static inline ret \
__wt_atomic_add##name(type *vp, type v) \
{ \
*vp += v; \
return (*vp); \
} \
static inline ret \
__wt_atomic_fetch_add##name(type *vp, type v) \
{ \
type orig; \
\
old = *vp; \
*vp += v; \
return (old); \
} \
static inline ret \
__wt_atomic_store##name(type *vp, type v) \
{ \
type orig; \
\
orig = *vp; \
*vp = v; \
return (old); \
} \
static inline ret \
__wt_atomic_sub##name(type *vp, type v) \
{ \
*vp -= v; \
return (*vp); \
} \
static inline int \
__wt_atomic_cas##name(type *vp, type old, type new) \
{ \
if (*vp == old) { \
*vp = new; \
return (1); \
} \
return (0); \
}
WT_ATOMIC_FUNC(1, uint8_t, uint8_t)
WT_ATOMIC_FUNC(2, uint16_t, uint16_t)
WT_ATOMIC_FUNC(4, uint32_t, uint32_t)
WT_ATOMIC_FUNC(v4, uint32_t, volatile uint32_t)
WT_ATOMIC_FUNC(i4, int32_t, int32_t)
WT_ATOMIC_FUNC(iv4, int32_t, volatile int32_t)
WT_ATOMIC_FUNC(8, uint64_t, uint64_t)
WT_ATOMIC_FUNC(v8, uint64_t, volatile uint64_t)
WT_ATOMIC_FUNC(i8, int64_t, int64_t)
WT_ATOMIC_FUNC(iv8, int64_t, volatile int64_t)
/*
* __wt_atomic_cas_ptr --
* Pointer compare and swap.
*/
static inline int
__wt_atomic_cas_ptr(void *vp, void *old, void *new) {
if (*(void **)vp == old) {
*(void **)vp = new;
return (1);
}
return (0);
}
static inline void WT_BARRIER(void) { return; }
static inline void WT_FULL_BARRIER(void) { return; }
static inline void WT_PAUSE(void) { return; }
static inline void WT_READ_BARRIER(void) { return; }
static inline void WT_WRITE_BARRIER(void) { return; }
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