From 4b15c681647b59979a9ede515083fa7974e4e8df Mon Sep 17 00:00:00 2001
From: Kazuki Sakamoto <sakamoto@splhack.org>
Date: Mon, 6 Jun 2016 23:17:46 -0700
Subject: [PATCH] Check socket using select prior to call channel_read

---
 src/MacVim/MMBackend.m | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/MacVim/MMBackend.m b/src/MacVim/MMBackend.m
index 7ecdc2d61a..1e8d26e35b 100644
--- a/src/MacVim/MMBackend.m
+++ b/src/MacVim/MMBackend.m
@@ -3463,7 +3463,14 @@ static void socketReadCallback(CFSocketRef s,
 
 - (void)read
 {
-    channel_read(channel, part, "MMChannel_read");
+    int fd = channel->ch_part[part].ch_fd;
+    fd_set fds;
+    FD_ZERO(&fds);
+    FD_SET(fd, &fds);
+    struct timeval t;
+    memset(&t, 0, sizeof(t));
+    if (select(FD_SETSIZE, &fds, NULL, NULL, &t) > 0)
+        channel_read(channel, part, "MMChannel_read");
 }
 
 @end