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duke-git avatar duke-git commented on May 25, 2024

Promise由于其特殊性,必须是pin的,不能够移动在内存中的位置,所以new函数返回一个Promise指针依旧有可能不安全,且_sync.Mutex和_sync.WaitGroup虽然为了内存不可移动声明为指针类型,但是占用了更多内存,且*sync.Mutex是不必要的,建议将代码修改为如下布局,更安全,并节约资源

type Promise[T any] struct {
	*promise[T]
}

type promise[T any] struct {
	runnable func(resolve func(T), reject func(error))
	result   T
	err      error
	wait       sync.WaitGroup
	pending  atomic.Bool
}

@lee157953 赞👍,可以提个pr.

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