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arch-arm.h
(732 B)
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arch-hppa.h
(552 B)
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arch-ia64.h
(783 B)
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arch-ppc.h
(899 B)
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arch-x86.h
(6.78 KB)
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fallback.h
(4.62 KB)
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generic-acc.h
(2.84 KB)
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generic-gcc.h
(6.89 KB)
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generic-msvc.h
(2.71 KB)
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generic-sunpro.h
(2.54 KB)
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generic-xlc.h
(2.93 KB)
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generic.h
(9.96 KB)
Editing: generic-msvc.h
/*------------------------------------------------------------------------- * * generic-msvc.h * Atomic operations support when using MSVC * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * NOTES: * * Documentation: * * Interlocked Variable Access * http://msdn.microsoft.com/en-us/library/ms684122%28VS.85%29.aspx * * src/include/port/atomics/generic-msvc.h * *------------------------------------------------------------------------- */ #include <intrin.h> #include <windows.h> /* intentionally no include guards, should only be included by atomics.h */ #ifndef INSIDE_ATOMICS_H #error "should be included via atomics.h" #endif /* Should work on both MSVC and Borland. */ #pragma intrinsic(_ReadWriteBarrier) #define pg_compiler_barrier_impl() _ReadWriteBarrier() #ifndef pg_memory_barrier_impl #define pg_memory_barrier_impl() MemoryBarrier() #endif #if defined(HAVE_ATOMICS) #define PG_HAVE_ATOMIC_U32_SUPPORT typedef struct pg_atomic_uint32 { volatile uint32 value; } pg_atomic_uint32; #define PG_HAVE_ATOMIC_U64_SUPPORT typedef struct __declspec(align(8)) pg_atomic_uint64 { volatile uint64 value; } pg_atomic_uint64; #define PG_HAVE_ATOMIC_COMPARE_EXCHANGE_U32 static inline bool pg_atomic_compare_exchange_u32_impl(volatile pg_atomic_uint32 *ptr, uint32 *expected, uint32 newval) { bool ret; uint32 current; current = InterlockedCompareExchange(&ptr->value, newval, *expected); ret = current == *expected; *expected = current; return ret; } #define PG_HAVE_ATOMIC_FETCH_ADD_U32 static inline uint32 pg_atomic_fetch_add_u32_impl(volatile pg_atomic_uint32 *ptr, int32 add_) { return InterlockedExchangeAdd(&ptr->value, add_); } /* * The non-intrinsics versions are only available in vista upwards, so use the * intrinsic version. Only supported on >486, but we require XP as a minimum * baseline, which doesn't support the 486, so we don't need to add checks for * that case. */ #pragma intrinsic(_InterlockedCompareExchange64) #define PG_HAVE_ATOMIC_COMPARE_EXCHANGE_U64 static inline bool pg_atomic_compare_exchange_u64_impl(volatile pg_atomic_uint64 *ptr, uint64 *expected, uint64 newval) { bool ret; uint64 current; current = _InterlockedCompareExchange64(&ptr->value, newval, *expected); ret = current == *expected; *expected = current; return ret; } /* Only implemented on itanium and 64bit builds */ #ifdef _WIN64 #pragma intrinsic(_InterlockedExchangeAdd64) #define PG_HAVE_ATOMIC_FETCH_ADD_U64 static inline uint64 pg_atomic_fetch_add_u64_impl(volatile pg_atomic_uint64 *ptr, int64 add_) { return _InterlockedExchangeAdd64(&ptr->value, add_); } #endif /* _WIN64 */ #endif /* HAVE_ATOMICS */
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