48 lines
626 B
Go
48 lines
626 B
Go
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package main
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import (
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"fmt"
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"sync"
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)
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// Need to show solution
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func WaitToClose(lhs, rhs chan struct{}) {
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lhsClosed, rhsClosed := false, false
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for !lhsClosed || !rhsClosed {
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select {
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case _, ok := <-lhs:
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fmt.Println("lhs", ok)
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if !ok {
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lhsClosed = true
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}
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case _, ok := <-rhs:
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fmt.Println("rhs", ok)
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if !ok {
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rhsClosed = true
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}
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}
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}
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}
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func main() {
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lhs := make(chan struct{}, 1)
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rhs := make(chan struct{}, 1)
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wg := sync.WaitGroup{}
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wg.Add(1)
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go func() {
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defer wg.Done()
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WaitToClose(lhs, rhs)
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}()
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lhs <- struct{}{}
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rhs <- struct{}{}
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close(lhs)
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close(rhs)
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wg.Wait()
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}
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