Created
December 13, 2013 17:41
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- (void)main | |
{ | |
[self doStuffInOperations]; | |
} | |
- (void)doStuffInGCD | |
{ | |
dispatch_group_t d_group = dispatch_group_create(); | |
dispatch_queue_t bg_queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); | |
dispatch_group_async(d_group, bg_queue, ^{ | |
[self doSomething:@"a"]; | |
}); | |
dispatch_group_async(d_group, bg_queue, ^{ | |
[self doSomething:@"b"]; | |
}); | |
dispatch_group_async(d_group, bg_queue, ^{ | |
[self doSomething:@"c"]; | |
}); | |
// you can do this to synchronously wait on the current thread: | |
dispatch_group_wait(d_group, DISPATCH_TIME_FOREVER); | |
dispatch_release(d_group); | |
NSLog(@"All background tasks are done!!"); | |
// **** OR **** | |
// this if you just want something to happen after those are all done: | |
dispatch_group_notify(d_group, dispatch_get_main_queue(), ^{ | |
dispatch_release(d_group); | |
NSLog(@"All background tasks are done!!"); | |
}); | |
} | |
- (void)doSomething:(id)arg | |
{ | |
// do whatever you want with the arg here |
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