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Sync AMTL from upstream

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This commit is contained in:
Arkshine
2014-09-29 18:36:37 +02:00
parent e7452e00ce
commit 35e661fdf9
5 changed files with 62 additions and 6 deletions
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36
public/amtl/am-atomics.h
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@@ -38,9 +38,13 @@ namespace ke {
extern "C" {
long __cdecl _InterlockedIncrement(long volatile *dest);
long __cdecl _InterlockedDecrement(long volatile *dest);
long __cdecl _InterlockedIncrement64(long long volatile *dest);
long __cdecl _InterlockedDecrement64(long long volatile *dest);
}
# pragma intrinsic(_InterlockedIncrement)
# pragma intrinsic(_InterlockedDecrement)
# pragma intrinsic(_InterlockedIncrement64)
# pragma intrinsic(_InterlockedDecrement64)
#endif
template <size_t Width>
@@ -50,7 +54,7 @@ template <>
struct AtomicOps<4>
{
#if defined(_MSC_VER)
typedef long Type;
typedef volatile long Type;
static Type Increment(Type *ptr) {
return _InterlockedIncrement(ptr);
@@ -59,7 +63,7 @@ struct AtomicOps<4>
return _InterlockedDecrement(ptr);
};
#elif defined(__GNUC__)
typedef int Type;
typedef volatile int Type;
// x86/x64 notes: When using GCC < 4.8, this will compile to a spinlock.
// On 4.8+, or when using Clang, we'll get the more optimal "lock addl"
@@ -73,6 +77,34 @@ struct AtomicOps<4>
#endif
};
template <>
struct AtomicOps<8>
{
#if defined(_MSC_VER)
typedef volatile long long Type;
static Type Increment(Type *ptr) {
return _InterlockedIncrement64(ptr);
}
static Type Decrement(Type *ptr) {
return _InterlockedDecrement64(ptr);
};
#elif defined(__GNUC__)
typedef volatile int64_t Type;
// x86/x64 notes: When using GCC < 4.8, this will compile to a spinlock.
// On 4.8+, or when using Clang, we'll get the more optimal "lock addl"
// variant.
static Type Increment(Type *ptr) {
return __sync_add_and_fetch(ptr, 1);
}
static Type Decrement(Type *ptr) {
return __sync_sub_and_fetch(ptr, 1);
}
#endif
};
class AtomicRefCount
{
typedef AtomicOps<sizeof(uintptr_t)> Ops;