mirror of https://github.com/milvus-io/milvus.git
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package syncutil
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import "context"
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// NewAsyncTaskNotifier creates a new async task notifier.
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func NewAsyncTaskNotifier[T any]() *AsyncTaskNotifier[T] {
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ctx, cancel := context.WithCancel(context.Background())
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return &AsyncTaskNotifier[T]{
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ctx: ctx,
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cancel: cancel,
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future: NewFuture[T](),
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}
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}
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// AsyncTaskNotifier is a notifier for async task.
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type AsyncTaskNotifier[T any] struct {
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ctx context.Context
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cancel context.CancelFunc
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future *Future[T]
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}
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// Context returns the context of the async task.
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func (n *AsyncTaskNotifier[T]) Context() context.Context {
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return n.ctx
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}
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// Cancel cancels the async task, the async task can receive the cancel signal from Context.
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func (n *AsyncTaskNotifier[T]) Cancel() {
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n.cancel()
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}
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// BlockAndGetResult returns the result of the async task.
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func (n *AsyncTaskNotifier[T]) BlockAndGetResult() T {
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return n.future.Get()
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}
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// BlockUntilFinish blocks until the async task is finished.
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func (n *AsyncTaskNotifier[T]) BlockUntilFinish() {
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<-n.future.Done()
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}
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// FinishChan returns a channel that will be closed when the async task is finished.
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func (n *AsyncTaskNotifier[T]) FinishChan() <-chan struct{} {
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return n.future.Done()
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}
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// Finish finishes the async task with a result.
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func (n *AsyncTaskNotifier[T]) Finish(result T) {
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n.future.Set(result)
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}
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