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experiment with using non-c++ atomics on msvc

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This commit is contained in:
daan 2020-09-05 11:27:06 -07:00
parent 0d0b5e3fad
commit 102a85937e
1 changed files with 6 additions and 4 deletions
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10
include/mimalloc-atomic.h
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@ -17,7 +17,7 @@ terms of the MIT license. A copy of the license can be found in the file
// instead of passing the memory order as a parameter.
// -----------------------------------------------------------------------------------------------
#if defined(__cplusplus)
#if defined(__cplusplus) && !defined(_MSC_VER)
// Use C++ atomics
#include <atomic>
#define _Atomic(tp) std::atomic<tp>
@ -71,7 +71,7 @@ static inline intptr_t mi_atomic_addi(_Atomic(intptr_t)* p, intptr_t add);
static inline intptr_t mi_atomic_subi(_Atomic(intptr_t)* p, intptr_t sub);
#if defined(__cplusplus) || !defined(_MSC_VER)
#if (!defined(_MSC_VER)) // defined(__cplusplus) || !defined(_MSC_VER)
// In C++/C11 atomics we have polymorphic atomics so can use the typed `ptr` variants (where `tp` is the type of atomic value)
// We use these macros so we can provide a typed wrapper in MSVC in C compilation mode as well
@ -193,7 +193,7 @@ static inline void mi_atomic_store_explicit(_Atomic(uintptr_t)* p, uintptr_t x,
// These are used by the statistics
static inline int64_t mi_atomic_addi64_relaxed(volatile _Atomic(int64_t)* p, int64_t add) {
#ifdef _WIN64
return (int64_t)mi_atomic_addi((int64_t*)p,add);
return (int64_t)mi_atomic_addi((_Atomic(intptr_t)*)p,add);
#else
int64_t current;
int64_t sum;
@ -208,7 +208,7 @@ static inline void mi_atomic_maxi64_relaxed(volatile _Atomic(int64_t)*p, int64_t
int64_t current;
do {
current = *p;
} while (current < x && _InterlockedCompareExchange64(p, x, current) != current);
} while (current < x && _InterlockedCompareExchange64((int64_t*)p, x, current) != current);
}
// The pointer macros cast to `uintptr_t`.
@ -222,6 +222,8 @@ static inline void mi_atomic_maxi64_relaxed(volatile _Atomic(int64_t)*p, int64_t
#define mi_atomic_exchange_ptr_release(tp,p,x) (tp*)mi_atomic_exchange_release((_Atomic(uintptr_t)*)(p),(uintptr_t)x)
#define mi_atomic_exchange_ptr_acq_rel(tp,p,x) (tp*)mi_atomic_exchange_acq_rel((_Atomic(uintptr_t)*)(p),(uintptr_t)x)
#else
#pragma message("define atomics for this platform (not C11, C++, msvc)")
#endif