C语言的通用类型指针交换是相当简单的，只需要将指针类型统一转成void*即可，Golang也有一种类似的操作，但是稍微麻烦一点：
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package main import ( "fmt" "sync/atomic" "unsafe" ) func swapPointer(readPointer *unsafe.Pointer, writePointer *unsafe.Pointer) { *writePointer = atomic.SwapPointer(readPointer, *writePointer) } func main() { var a int = 1 var b int = 2 var readPointer *int = &a var writePointer *int = &b fmt.Println(*readPointer) fmt.Println(*writePointer) swapPointer((*unsafe.Pointer)(unsafe.Pointer(&readPointer)), (*unsafe.Pointer)(unsafe.Pointer(&writePointer))) fmt.Println("------------") fmt.Println(*readPointer) fmt.Println(*writePointer) } |