new file mode 100644

@@ -0,0 +1,18 @@

+// +build darwin

+

+package pidfile

+

+import (

+	"syscall"

+)

+

+func processExists(pid int) bool {

+	// OS X does not have a proc filesystem.

+	// Use kill -0 pid to judge if the process exists.

+	err := syscall.Kill(pid, 0)

+	if err != nil {

+		return false

+	}

+

+	return true

+}

@@ -1,4 +1,4 @@

-// +build !windows

+// +build !windows,!darwin

 package pidfile