From 45d8beea46ec06ce52c512c8de5976cff85b67a2 Mon Sep 17 00:00:00 2001
From: Philipp Matthias Schaefer <philipp.matthias.schaefer@posteo.de>
Date: Mon, 24 Oct 2016 21:03:30 +0200
Subject: Make signal argument to kill optional

---
 src/sys/signal.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/sys/signal.rs')

diff --git a/src/sys/signal.rs b/src/sys/signal.rs
index 345e69e3..d9744b94 100644
--- a/src/sys/signal.rs
+++ b/src/sys/signal.rs
@@ -387,8 +387,12 @@ pub fn pthread_sigmask(how: SigFlags,
     Errno::result(res).map(drop)
 }
 
-pub fn kill(pid: libc::pid_t, signal: Signal) -> Result<()> {
-    let res = unsafe { libc::kill(pid, signal as libc::c_int) };
+pub fn kill<T: Into<Option<Signal>>>(pid: libc::pid_t, signal: T) -> Result<()> {
+    let res = unsafe { libc::kill(pid,
+                                  match signal.into() {
+                                      Some(s) => s as libc::c_int,
+                                      None => 0,
+                                  }) };
 
     Errno::result(res).map(drop)
 }
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