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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.
*/
#include <intrin.h>
#ifndef _M_AMD64
#error "Only x64 is supported with MSVC"
#endif
#define inline __inline
#define WT_SIZET_FMT "Iu" /* size_t format string */
/*
* Add MSVC-specific attributes and pragmas to types and function declarations.
*/
#define WT_COMPILER_TYPE_ALIGN(x) __declspec(align(x))
#define WT_PACKED_STRUCT_BEGIN(name) \
__pragma(pack(push,1)) \
struct name {
#define WT_PACKED_STRUCT_END \
}; \
__pragma(pack(pop))
#define WT_GCC_FUNC_ATTRIBUTE(x)
#define WT_GCC_FUNC_DECL_ATTRIBUTE(x)
#define WT_ATOMIC_FUNC(name, ret, type, s, t) \
static inline ret \
__wt_atomic_add##name(type *vp, type v) \
{ \
return (_InterlockedExchangeAdd ## s((t *)(vp), (t)(v)) + (v)); \
} \
static inline ret \
__wt_atomic_fetch_add##name(type *vp, type v) \
{ \
return (_InterlockedExchangeAdd ## s((t *)(vp), (t)(v))); \
} \
static inline ret \
__wt_atomic_store##name(type *vp, type v) \
{ \
return (_InterlockedExchange ## s((t *)(vp), (t)(v))); \
} \
static inline ret \
__wt_atomic_sub##name(type *vp, type v) \
{ \
return (_InterlockedExchangeAdd ## s((t *)(vp), - (t)v) - (v)); \
} \
static inline int \
__wt_atomic_cas##name(type *vp, type old, type new) \
{ \
return (_InterlockedCompareExchange ## s \
((t *)(vp), (t)(new), (t)(old)) == (t)(old)); \
}
WT_ATOMIC_FUNC(8, uint8_t, uint8_t, 8, char)
WT_ATOMIC_FUNC(16, uint16_t, uint16_t, 16, short)
WT_ATOMIC_FUNC(32, uint32_t, uint32_t, , long)
WT_ATOMIC_FUNC(v32, uint32_t, volatile uint32_t, , long)
WT_ATOMIC_FUNC(i32, int32_t, int32_t, , long)
WT_ATOMIC_FUNC(iv32, int32_t, volatile int32_t, , long)
WT_ATOMIC_FUNC(64, uint64_t, uint64_t, 64, __int64)
WT_ATOMIC_FUNC(v64, uint64_t, volatile uint64_t, 64, __int64)
WT_ATOMIC_FUNC(i64, int64_t, int64_t, 64, __int64)
WT_ATOMIC_FUNC(iv64, int64_t, volatile int64_t, 64, __int64)
/*
* __wt_atomic_cas_ptr --
* Pointer compare and swap.
*/
static inline int
__wt_atomic_cas_ptr(void *vp, void *old, void *new)
{
return (_InterlockedCompareExchange64(
vp, (int64_t)new, (int64_t)old) == ((int64_t)old));
}
static inline void WT_BARRIER(void) { _ReadWriteBarrier(); }
static inline void WT_FULL_BARRIER(void) { _mm_mfence(); }
static inline void WT_PAUSE(void) { _mm_pause(); }
static inline void WT_READ_BARRIER(void) { _mm_lfence(); }
static inline void WT_WRITE_BARRIER(void) { _mm_sfence(); }
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