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package eval
import (
"context"
"errors"
"os"
"os/signal"
"syscall"
)
// ErrInterrupted is thrown when the execution is interrupted by a signal.
var ErrInterrupted = errors.New("interrupted")
// ListenInterrupts returns a Context that is canceled when SIGINT or SIGQUIT
// has been received by the process. It also returns a function to cancel the
// Context, which should be called when it is no longer needed.
func ListenInterrupts() (context.Context, func()) {
ctx, cancel := context.WithCancel(context.Background())
sigCh := make(chan os.Signal, 1)
signal.Notify(sigCh, syscall.SIGINT, syscall.SIGQUIT)
go func() {
select {
case <-sigCh:
cancel()
case <-ctx.Done():
}
signal.Stop(sigCh)
}()
return ctx, func() {
cancel()
}
}
|
