From 9e3f3caad06fa89ab8ad25f5260f7512d22e8e00 Mon Sep 17 00:00:00 2001
From: Andy Grover <agrover@redhat.com>
Date: Fri, 24 Feb 2017 12:57:05 -0800
Subject: [PATCH] Implement Debug for PollEvented<E> if E implements Debug

Useful, esp since mio::unix::EventedFd already implements Debug.

Signed-off-by: Andy Grover <agrover@redhat.com>
---
 src/reactor/poll_evented.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/reactor/poll_evented.rs b/src/reactor/poll_evented.rs
index 351276462..4737e2bcc 100644
--- a/src/reactor/poll_evented.rs
+++ b/src/reactor/poll_evented.rs
@@ -6,6 +6,7 @@
 //! acquisition of a token, and tracking of the readiness state on the
 //! underlying I/O primitive.
 
+use std::fmt;
 use std::io::{self, Read, Write};
 use std::sync::atomic::{AtomicUsize, Ordering};
 
@@ -43,6 +44,12 @@ pub struct PollEvented<E> {
     io: E,
 }
 
+impl<E: mio::Evented + fmt::Debug> fmt::Debug for PollEvented<E> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{{PollEvented {:?}}}", self.io)
+    }
+}
+
 impl<E: mio::Evented> PollEvented<E> {
     /// Creates a new readiness stream associated with the provided
     /// `loop_handle` and for the given `source`.