37 lines
707 B
Go
37 lines
707 B
Go
package q
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import (
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"container/list"
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)
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// NewStringQueue creates a non blocking string queue channel.
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func NewStringQueue() (chan<- string, <-chan string) {
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send := make(chan string, 1)
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receive := make(chan string, 1)
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go manageStringQueue(send, receive)
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return send, receive
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}
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func manageStringQueue(send <-chan string, receive chan<- string) {
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queue := list.New()
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defer close(receive)
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for {
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if front := queue.Front(); front == nil {
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if value, ok := <-send; ok {
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queue.PushBack(value)
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} else {
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break
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}
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} else {
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select {
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case receive <- front.Value.(string):
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queue.Remove(front)
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case value, ok := <-send:
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if ok {
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queue.PushBack(value)
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}
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}
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}
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}
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}
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