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/*-
* Copyright (c) 2014-2019 MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#define WT_PTRDIFFT_FMT "td" /* ptrdiff_t format string */
#define WT_SIZET_FMT "zu" /* size_t format string */
/* Lint-specific attributes. */
#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; \
\
orig = *vp; \
*vp += v; \
return (orig); \
} \
static inline ret __wt_atomic_store##name(type *vp, type v) \
{ \
type orig; \
\
orig = *vp; \
*vp = v; \
return (orig); \
} \
static inline ret __wt_atomic_sub##name(type *vp, type v) \
{ \
*vp -= v; \
return (*vp); \
} \
static inline bool __wt_atomic_cas##name(type *vp, type orig, type new) \
{ \
if (*vp == orig) { \
*vp = new; \
return (true); \
} \
return (false); \
}
WT_ATOMIC_FUNC(8, uint8_t, uint8_t)
WT_ATOMIC_FUNC(16, uint16_t, uint16_t)
WT_ATOMIC_FUNC(32, uint32_t, uint32_t)
WT_ATOMIC_FUNC(v32, uint32_t, volatile uint32_t)
WT_ATOMIC_FUNC(i32, int32_t, int32_t)
WT_ATOMIC_FUNC(iv32, int32_t, volatile int32_t)
WT_ATOMIC_FUNC(64, uint64_t, uint64_t)
WT_ATOMIC_FUNC(v64, uint64_t, volatile uint64_t)
WT_ATOMIC_FUNC(i64, int64_t, int64_t)
WT_ATOMIC_FUNC(iv64, int64_t, volatile int64_t)
WT_ATOMIC_FUNC(size, size_t, size_t)
/*
* __wt_atomic_cas_ptr --
* Pointer compare and swap.
*/
static inline bool
__wt_atomic_cas_ptr(void *vp, void *orig, void *new)
{
if (*(void **)vp == orig) {
*(void **)vp = new;
return (true);
}
return (false);
}
/*
* WT_BARRIER --
* No-op implementation of WT_BARRIER.
*/
static inline void
WT_BARRIER(void)
{
}
/*
* WT_FULL_BARRIER --
* No-op implementation of WT_FULL_BARRIER.
*/
static inline void
WT_FULL_BARRIER(void)
{
}
/*
* WT_PAUSE --
* No-op implementation of WT_PAUSE.
*/
static inline void
WT_PAUSE(void)
{
}
/*
* WT_READ_BARRIER --
* No-op implementation of WT_READ_BARRIER.
*/
static inline void
WT_READ_BARRIER(void)
{
}
/*
* WT_WRITE_BARRIER --
* No-op implementation of WT_WRITE_BARRIER.
*/
static inline void
WT_WRITE_BARRIER(void)
{
}
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