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@dreampiggy
Created April 13, 2017 07:22
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GCD main queue Macro
#ifndef dispatch_main_sync_safe
#define dispatch_main_sync_safe(block)\
if ([NSThread isMainThread]) {\
block();\
} else {\
dispatch_sync(dispatch_get_main_queue(), block);\
}
#endif
#ifndef dispatch_main_async_safe
#define dispatch_main_async_safe(block)\
if ([NSThread isMainThread]) {\
block();\
} else {\
dispatch_async(dispatch_get_main_queue(), block);\
}
#endif
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