This commit is contained in:
Mike Schwörer 2022-11-30 23:52:19 +01:00
parent d12bf23b46
commit 6a304b875a
Signed by: Mikescher
GPG Key ID: D3C7172E0A70F8CF

View File

@ -1,14 +1,45 @@
package syncext package syncext
import "time" import (
"time"
)
// https://gobyexample.com/non-blocking-channel-operations
// https://gobyexample.com/timeouts
// https://groups.google.com/g/golang-nuts/c/Oth9CmJPoqo
func ReadChannelWithTimeout[T any](c chan T, timeout time.Duration) (T, bool) { func ReadChannelWithTimeout[T any](c chan T, timeout time.Duration) (T, bool) {
afterCh := time.After(timeout)
select { select {
case rv := <-c: case msg := <-c:
return rv, true return msg, true
case <-afterCh: case <-time.After(timeout):
return *new(T), false return *new(T), false
} }
}
func WriteChannelWithTimeout[T any](c chan T, msg T, timeout time.Duration) bool {
select {
case c <- msg:
return true
case <-time.After(timeout):
return false
}
}
func ReadNonBlocking[T any](c chan T) (T, bool) {
select {
case msg := <-c:
return msg, true
default:
return *new(T), false
}
}
func WriteNonBlocking[T any](c chan T, msg T) bool {
select {
case c <- msg:
return true
default:
return false
}
} }