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misc atomics: Use std::atomic_thread_fence (MSVC)

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Eladash 2019-06-11 11:00:33 +03:00 • committed by Ivan
parent b3513cd7fa
commit d6db61c594
1 changed files with 12 additions and 8 deletions
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20
Utilities/Atomic.h
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@ -3,6 +3,10 @@
#include "types.h"
#include <functional>
#ifdef _MSC_VER
#include <atomic>
#endif
// Helper class, provides access to compiler-specific atomic intrinsics
template <typename T, std::size_t Size = sizeof(T)>
struct atomic_storage
@ -217,7 +221,7 @@ struct atomic_storage<T, 1> : atomic_storage<T, 0>
static inline T load(const T& dest)
{
char value = *(const volatile char*)&dest;
_ReadWriteBarrier();
std::atomic_thread_fence(std::memory_order_acquire);
return (T&)value;
}
@ -228,7 +232,7 @@ struct atomic_storage<T, 1> : atomic_storage<T, 0>
static inline void release(T& dest, T value)
{
_ReadWriteBarrier();
std::atomic_thread_fence(std::memory_order_release);
*(volatile char*)&dest = (char&)value;
}
@ -279,7 +283,7 @@ struct atomic_storage<T, 2> : atomic_storage<T, 0>
static inline T load(const T& dest)
{
short value = *(const volatile short*)&dest;
_ReadWriteBarrier();
std::atomic_thread_fence(std::memory_order_acquire);
return (T&)value;
}
@ -290,7 +294,7 @@ struct atomic_storage<T, 2> : atomic_storage<T, 0>
static inline void release(T& dest, T value)
{
_ReadWriteBarrier();
std::atomic_thread_fence(std::memory_order_release);
*(volatile short*)&dest = (short&)value;
}
@ -385,7 +389,7 @@ struct atomic_storage<T, 4> : atomic_storage<T, 0>
static inline T load(const T& dest)
{
long value = *(const volatile long*)&dest;
_ReadWriteBarrier();
std::atomic_thread_fence(std::memory_order_acquire);
return (T&)value;
}
@ -396,7 +400,7 @@ struct atomic_storage<T, 4> : atomic_storage<T, 0>
static inline void release(T& dest, T value)
{
_ReadWriteBarrier();
std::atomic_thread_fence(std::memory_order_release);
*(volatile long*)&dest = (long&)value;
}
@ -504,7 +508,7 @@ struct atomic_storage<T, 8> : atomic_storage<T, 0>
static inline T load(const T& dest)
{
llong value = *(const volatile llong*)&dest;
_ReadWriteBarrier();
std::atomic_thread_fence(std::memory_order_acquire);
return (T&)value;
}
@ -515,7 +519,7 @@ struct atomic_storage<T, 8> : atomic_storage<T, 0>
static inline void release(T& dest, T value)
{
_ReadWriteBarrier();
std::atomic_thread_fence(std::memory_order_release);
*(volatile llong*)&dest = (llong&)value;
}