Does GCD assure that all the blocks working in the same queue are always working in a same thread? If I create a dispatchqueue and dispath_async blocks to this queue, does all the blocks that dispatc
So i have this code: dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0), ^{ //Bunch of code
I have to perform a fetch via NSFetchedResultsController on a background thread. My current solution is structured like that:
开发者_StackOverflow社区I\'ve been scouring Apple\'s documentation on application states and Grand Central Dispatch, but I haven\'t found a good answer to this question.
If I have a serial queu开发者_运维百科e, how can I, from the main thread, tell it to immediately stop execution and cancel all of its tasks?If you\'re using Swift the DispatchWorkItem class allows wor
I have a block that I submit to a queue and I only want the block to execute if a certain condition is true. It looks sort of like this:
I\'m new to queues and I\'m having some trouble setting up the following scheme. I have three tasks that need doing.
I noticed that they don\'t return pointers when created, but actual objects. So to get a pointer, I\'m trying to declare it like this:
i have trouble suspending a gcd query. Here is some code开发者_StackOverflow that demonstrates the problem:
I got this code -(void)changeText { dispatch_queue_t gqueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
加载中,请稍侯......