From 64150fe29a2c6a7a60860d95e5ff8e7370a3b2a9 Mon Sep 17 00:00:00 2001
From: langyanduan <langyanduan@gmail.com>
Date: Fri, 11 Oct 2019 11:23:44 +0800
Subject: [PATCH] fix memory leak

---
 coobjc/co/COChan.m | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/coobjc/co/COChan.m b/coobjc/co/COChan.m
index e34ddf9..e51f509 100644
--- a/coobjc/co/COChan.m
+++ b/coobjc/co/COChan.m
@@ -264,7 +264,9 @@ - (id)receive {
 + (instancetype)sleep:(NSTimeInterval)duration {
     COTimeChan *chan = [self chanWithDuration:duration];
     
+    __weak __typeof(chan) weakChan = chan;
     chan.timer = [[CODispatch currentDispatch] dispatch_timer:^{
+        __strong __typeof(chan) chan = weakChan;
         [chan send_nonblock:@1];
     } interval:duration];