#endif
}
-uint32_t sys::CompareAndSwap32(volatile uint32_t* ptr,
- uint32_t new_value,
- uint32_t old_value) {
+sys::cas_flag sys::CompareAndSwap(volatile sys::cas_flag* ptr,
+ sys::cas_flag new_value,
+ sys::cas_flag old_value) {
#if LLVM_MULTITHREADED==0
- uint32_t result = *ptr;
+ sys::cas_flag result = *ptr;
if (result == old_value)
*ptr = new_value;
return result;
#endif
}
-uint32_t sys::AtomicIncrement32(volatile uint32_t* ptr) {
+sys::cas_flag sys::AtomicIncrement(volatile sys::cas_flag* ptr) {
#if LLVM_MULTITHREADED==0
++(*ptr);
return *ptr;
#endif
}
-uint32_t sys::AtomicDecrement32(volatile uint32_t* ptr) {
+sys::cas_flag sys::AtomicDecrement(volatile sys::cas_flag* ptr) {
#if LLVM_MULTITHREADED==0
--(*ptr);
return *ptr;
#endif
}
-uint32_t sys::AtomicAdd32(volatile uint32_t* ptr, uint32_t val) {
+sys::cas_flag sys::AtomicAdd(volatile sys::cas_flag* ptr, sys::cas_flag val) {
#if LLVM_MULTITHREADED==0
*ptr += val;
return *ptr;
#elif defined(__GNUC__)
return __sync_add_and_fetch(ptr, val);
#elif defined(_MSC_VER)
- return InterlockedAdd(ptr, val);
+ return InterlockedExchangeAdd(ptr, val) + val;
#else
# error No atomic add implementation for your platform!
#endif
}
-uint64_t sys::AtomicAdd64(volatile uint64_t* ptr, uint64_t val) {
-#if LLVM_MULTITHREADED==0
- *ptr += val;
- return *ptr;
-#elif defined(__GNUC__)
- return __sync_add_and_fetch(ptr, val);
-#elif defined(_MSC_VER)
- return InterlockedAdd64(ptr, val);
-#else
-# error No atomic add implementation for your platform!
-#endif
+sys::cas_flag sys::AtomicMul(volatile sys::cas_flag* ptr, sys::cas_flag val) {
+ sys::cas_flag original, result;
+ do {
+ original = *ptr;
+ result = original * val;
+ } while (sys::CompareAndSwap(ptr, result, original) != original);
+
+ return result;
}
+sys::cas_flag sys::AtomicDiv(volatile sys::cas_flag* ptr, sys::cas_flag val) {
+ sys::cas_flag original, result;
+ do {
+ original = *ptr;
+ result = original / val;
+ } while (sys::CompareAndSwap(ptr, result, original) != original);
+
+ return result;
+}