From dd682c92b59f556d548031dbaaf3ea0ea5a6f269 Mon Sep 17 00:00:00 2001
From: Matej Bukovinski <matej@bukovinski.com>
Date: Mon, 24 Mar 2014 20:14:18 +0100
Subject: [PATCH] Performing cache callbacks from the ioQueue asynchronously.
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- more appropriate than dispatch_main_sync_safe, since we’ll always be on the ioQueue when calling
- prevents deadlock situation described in #625
---
 SDWebImage/SDImageCache.m | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/SDWebImage/SDImageCache.m b/SDWebImage/SDImageCache.m
index 57778cf..0446847 100644
--- a/SDWebImage/SDImageCache.m
+++ b/SDWebImage/SDImageCache.m
@@ -296,7 +296,7 @@ BOOL ImageDataHasPNGPreffix(NSData *data) {
                 [self.memCache setObject:diskImage forKey:key cost:cost];
             }
 
-            dispatch_main_sync_safe(^{
+            dispatch_async(dispatch_get_main_queue(), ^{
                 doneBlock(diskImage, SDImageCacheTypeDisk);
             });
         }
@@ -349,7 +349,7 @@ BOOL ImageDataHasPNGPreffix(NSData *data) {
                                                         error:NULL];
 
         if (completion) {
-            dispatch_main_sync_safe(^{
+            dispatch_async(dispatch_get_main_queue(), ^{
                 completion();
             });
         }
@@ -486,7 +486,7 @@ BOOL ImageDataHasPNGPreffix(NSData *data) {
         }
 
         if (completionBlock) {
-            dispatch_main_sync_safe(^{
+            dispatch_async(dispatch_get_main_queue(), ^{
                 completionBlock(fileCount, totalSize);
             });
         }