Fix singnal handling for different systems

signals_unix.go

@@ -0,0 +1,30 @@
+// +build linux bsd darwin
+
+package asynq
+
+import (
+	"os"
+	"os/signal"
+
+	"golang.org/x/sys/unix"
+
+	"github.com/hibiken/asynq/internal/base"
+)
+
+// waitForSignals waits for signals and handle them.
+// It handles SIGTERM, SIGINT, and SIGTSTP.
+// SIGTERM and SIGINT will signal the process to exit.
+// SIGTSTP will signal the process to stop processing new tasks.
+func (bg *Background) waitForSignals() {
+	sigs := make(chan os.Signal, 1)
+	signal.Notify(sigs, unix.SIGTERM, unix.SIGINT, unix.SIGTSTP)
+	for {
+		sig := <-sigs
+		if sig == unix.SIGTSTP {
+			bg.processor.stop()
+			bg.ps.SetStatus(base.StatusStopped)
+			continue
+		}
+		break
+	}
+}