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package toolbox
import (
"sync"
"sync/atomic"
"time"
)
// WaitGroup that waits with a timeout
// Returns true if timeout exceeded and false if there was no timeout
func WaitTimeout(wg *sync.WaitGroup, duration time.Duration) bool {
done := make(chan bool, 1)
closed := int32(0)
defer func() {
if atomic.CompareAndSwapInt32(&closed, 0, 1) {
close(done)
}
}()
go func() {
wg.Wait()
if atomic.LoadInt32(&closed) == 0 {
done <- true
}
}()
select {
case <-done: //Wait till the task is complete and channel get unblocked
return false //No durationToken. Normal execution of task completion
case <-time.After(duration): //Wait till durationToken to elapse
//TODO: time.After() creates a timer that does not get GC until timer durationToken gets elapsed. Need to use AfterFunc
return true //Timed out
}
}
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