Golang atomic

时间:2023-03-10 02:25:50
Golang atomic

原子操作函数

分为下面系列函数,其中Xxx可以是Int32/Int64/Uint32/Uint64/Uintptr/Pointer其中一种。

1.SwapXxx系列:交换新旧值;

// SwapInt32 atomically stores new into *addr and returns the previous *addr value.
func SwapInt32(addr *int32, new int32) (old int32)

2.CompareAndSwapXxx系列:比较并交换;

// CompareAndSwapInt32 executes the compare-and-swap operation for an int32 value.
func CompareAndSwapInt32(addr *int32, old, new int32) (swapped bool)

3.AddXxx系列:加减;

// AddInt32 atomically adds delta to *addr and returns the new value.
func AddInt32(addr *int32, delta int32) (new int32)

4.LoadXxx系列:读取;

// LoadInt32 atomically loads *addr.
func LoadInt32(addr *int32) (val int32)

5.StoreXxx系列:保存;

// StoreInt32 atomically stores val into *addr.
func StoreInt32(addr *int32, val int32)

以上。