From 1eb1abeedae36b390f5df02c0b6160cdd69c41b9 Mon Sep 17 00:00:00 2001
From: "fupan.lfp" <fupan.lfp@antfin.com>
Date: Thu, 7 May 2020 18:44:04 +0800
Subject: [PATCH] channel: fix the issue of epoll_wait interrupted by signal

The epoll_wait syscall would be interrupted by signal,
thus it's better to ignore this interrupted error.

Fixes: #779

Signed-off-by: fupan.lfp <fupan.lfp@antfin.com>
---
 channel.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/channel.go b/channel.go
index 05662f362..253ef8b5a 100644
--- a/channel.go
+++ b/channel.go
@@ -14,6 +14,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"syscall"
 	"time"
 
 	"github.com/hashicorp/yamux"
@@ -194,6 +195,10 @@ func (c *serialChannel) wait() error {
 	for {
 		nev, err := unix.EpollWait(epfd, events[:], -1)
 		if err != nil {
+			if err == syscall.EINTR {
+				continue
+			}
+
 			return err
 		}