init

sigchld_unix.go

@@ -0,0 +1,41 @@
+// +build linux darwin
+
+package main
+
+import (
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+func init() {
+	go watchChildSignal()
+}
+
+func watchChildSignal() {
+	var sigs = make(chan os.Signal, 3)
+	signal.Notify(sigs, syscall.SIGCHLD)
+
+	for {
+		<-sigs
+		reapChildren()
+	}
+}
+
+func reapChildren() {
+	for {
+		var wstatus syscall.WaitStatus
+		wpid, err := syscall.Wait4(-1, &wstatus, syscall.WNOHANG, nil)
+		if err != nil {
+			log.Printf("syscall.Wait4 call failed: %v", err)
+			break
+		}
+
+		if wpid != 0 {
+			log.Printf("reap dead child: %d, wstatus: %#08x", wpid, wstatus)
+		} else {
+			break
+		}
+	}
+}