From 44c0fc2820bb13018b200d3ec990c30cdd2a08cd Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 25 Nov 2015 12:48:15 +0200
Subject: Add process::try_wait() for non-blocking wait

---
 butl/process | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'butl/process')

diff --git a/butl/process b/butl/process
index bbd0162..6077ad3 100644
--- a/butl/process
+++ b/butl/process
@@ -75,6 +75,12 @@ namespace butl
     bool
     wait ();
 
+    // Return true if the process has already terminated in which case
+    // the argument is set to the result of wait().
+    //
+    bool
+    try_wait (bool&);
+
     ~process () {if (id != 0) wait ();}
 
     // Move constructible-only type.
-- 
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