From 6a0ecef81a27d3c928f88b578a5ea23c2fbd218b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20B=C3=BChler?= <github@stbuehler.de>
Date: Wed, 2 May 2018 01:33:41 +0200
Subject: [PATCH]  Timer: always park nested Park (#327)

The nested `Park` might need to do some work, even if the duration is 0
seconds (e.g. a `Reactor`).

Similar to what #313 did for CurrentThread.
---
 tokio-timer/src/timer/mod.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tokio-timer/src/timer/mod.rs b/tokio-timer/src/timer/mod.rs
index 1ebdb6241..89c5eb25e 100644
--- a/tokio-timer/src/timer/mod.rs
+++ b/tokio-timer/src/timer/mod.rs
@@ -478,6 +478,8 @@ where T: Park,
 
                 if deadline > now {
                     self.park.park_timeout(deadline - now)?;
+                } else {
+                    self.park.park_timeout(Duration::from_secs(0))?;
                 }
             }
             None => {
@@ -500,6 +502,8 @@ where T: Park,
 
                 if deadline > now {
                     self.park.park_timeout(cmp::min(deadline - now, duration))?;
+                } else {
+                    self.park.park_timeout(Duration::from_secs(0))?;
                 }
             }
             None => {