#defineDISPATCH_QUEUE_CONCURRENT Discussion Although they execute blocks concurrently, you can use barrier blocks to create synchronization points within the queue. See Also Creating a Dispatch Queue dispatch_get_main_queue Returns the serial dispatch queue associated with the application’s main thread....
在iOS中,可以使用dispatch_queue_create()函数来创建一个并发队列。通过指定DISPATCH_QUEUE_CONCURRENT作为队列类型,我们可以创建一个并发队列,使其中的任务可以同时执行。 dispatch_queue_t concurrentQueue = dispatch_queue_create("com.example.concurrentQueue", DISPATCH_QUEUE_CONCURRENT); 1. 在上面的代码中,我们创建...
*/- (void)gcdDemo3 { // 1. 队列dispatch_queue_tq = dispatch_queue_create("itheima", DISPATCH_QUEUE_CONCURRENT); // 2. 执行任务for(inti =0; i <10; ++i) {dispatch_async(q, ^{NSLog(@"%@ - %d", [NSThreadcurrentThread], i); }); }NSLog(@"come here"); } 并发队列 同步执行 ...
dispatch_release(myQueue); 注意到有个dispatch_get_main_queue就是通知主thread作出更新的。 上源代码 https://github.com/snowleung/ios_concurrent_demo
dispatch_queue_t workConcurrentQueue = dispatch_queue_create("com.jzp.sync.queue", DISPATCH_QUEUE_CONCURRENT); QSDispatchQueue *queue = [[QSDispatchQueue alloc]initWithQueue:workConcurrentQueue concurrentCount:1]; for (NSInteger i = 0; i < 10; i++) { [queue sync:^{ NSLog(@"thread-info...
IODispatchQueue DispatchConcurrent_f Instance Method DispatchConcurrent_f DriverKitiOSiPadOSmacOS voidDispatchConcurrent_f(void*context,IODispatchFunctionfunction); See Also Instance Methods DispatchConcurrent RunAction Sleep SleepWithDeadline SleepWithTimeout ...
防不胜防,写了几年的iOS,还是没能避免掉进去 // 利用并发队列,处理数据__block NSMutableArray<IMMessageStatus*>*resultArray=[NSMutableArray array];dispatch_queue_t concurrent=dispatch_queue_create("concurrent",DISPATCH_QUEUE_CONCURRENT);dispatch_apply(list.count,concurrent,^(size_t index){// 处理li...
Creating a concurrent dispatch queue A concurrent dispatch queue can be created by passing in an attribute as a parameter to the DispatchQueue initializer: let concurrentQueue = DispatchQueue(label: "swiftlee.concurrent.queue", attributes: .concurrent) concurrentQueue.async { print("Task 1 started"...
刀哥多线程之并发队列gcd-05-dispatch_queue_concurrent 2015-08-15 20:38 − 并发队列 特点 以先进先出的方式,并发调度队列中的任务执行如果当前调度的任务是同步执行的,会等待任务执行完成后,再调度后续的任务如果当前调度的任务是异步执行的,同时底层线程池有可用的线程资源,会再新的线程调度后续任务的执行 队列...
#defineDISPATCH_QUEUE_CONCURRENT Discussion Although they execute blocks concurrently, you can use barrier blocks to create synchronization points within the queue. See Also Creating a Dispatch Queue dispatch_get_main_queue Returns the serial dispatch queue associated with the application’s main thread....