Ios 将同步/异步与串行/并发队列混合时，调度程序如何工作？
在Grand Central Dispatch中，调度器如何处理不同队列（Ios 将同步/异步与串行/并发队列混合时，调度程序如何工作？,ios,asynchronous,queue,sync,grand-central-dispatch,Ios,Asynchronous,Queue,Sync,Grand Central Dispatch,在Grand Central Dispatch中，调度器如何处理不同队列（串行和并发）使用dispatch\u sync功能和dispatch\u async功能时？首先，我们需要两种类型的队列：一种串行和一种并发： dispatch_queue_t serialQueue = dispatch_queue_create("com.matteogobbi.dispex.serial_queue", DISPATCH_QUEUE_SERIAL); dispatch_queue_t concurr
串行并发dispatch\u syncdispatch\u asyncdispatch_queue_t serialQueue =
dispatch_queue_create("com.matteogobbi.dispex.serial_queue", DISPATCH_QUEUE_SERIAL);
dispatch_queue_t concurrentQueue =
dispatch_queue_create("com.matteogobbi.dispex.concurrent_queue", DISPATCH_QUEUE_CONCURRENT);
dispatch\u async/* Dispatch async with serial queue */
NSLog(@"\n\nDISPATCH: Async - QUEUE: Serial");
NSLog(@"block 1 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 1");
});
NSLog(@"block 2 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 2");
});
NSLog(@"block 3 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 3");
});
NSLog(@"block 4 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 4");
});
NSLog(@"block 5 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 5");
});
NSLog(@"block 6 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 6");
});
NSLog(@"block 7 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 7");
});
NSLog(@"block 8 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 8");
});
NSLog(@"block 9 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 9");
});
NSLog(@"block 10 added");
dispatch_async(serialQueue, ^{
NSLog(@"block 10");
});
NSLog(@"ALL BLOCK ADDED TO THE QUEUE --> FUNCTION RETURNED");
dispatcher\u asyncdispatch\u asyncdispatch\u syncdispatch\u sync异步调度/* Just wait before begin with the next test */
dispatch_group_wait(group_async_serial, DISPATCH_TIME_FOREVER);
/* Dispatch sync with serial queue */
NSLog(@"\n\nDISPATCH: Sync - QUEUE: Serial");
NSLog(@"block 1 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 1");
});
NSLog(@"block 2 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 2");
});
NSLog(@"block 3 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 3");
});
NSLog(@"block 4 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 4");
});
NSLog(@"block 5 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 5");
});
NSLog(@"block 6 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 6");
});
NSLog(@"block 7 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 7");
});
NSLog(@"block 8 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 8");
});
NSLog(@"block 9 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 9");
});
NSLog(@"block 10 added");
dispatch_sync(serialQueue, ^{
NSLog(@"block 10");
});
NSLog(@"ALL BLOCK ADDED TO THE QUEUE --> FUNCTION RETURNED");
/* Dispatch async with concurrent queue */
NSLog(@"\n\nDISPATCH: Async - QUEUE: Concurrent");
dispatch_group_t group_async_concurrent = dispatch_group_create();
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 1");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 2");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 3");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 4");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 5");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 6");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 7");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 8");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 9");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 10");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 11");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 12");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 13");
});
dispatch_group_async(group_async_concurrent, concurrentQueue, ^{
NSLog(@"block 14");
});
NSLog(@"ALL BLOCK ADDED TO THE QUEUE --> FUNCTION RETURNED");
/* Just wait before begin with the next test */
dispatch_group_wait(group_async_concurrent, DISPATCH_TIME_FOREVER);
/* Dispatch sync with concurrent queue */
NSLog(@"\n\nDISPATCH: Sync - QUEUE: Concurrent");
NSLog(@"block 1 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 1");
});
NSLog(@"block 2 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 2");
});
NSLog(@"block 3 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 3");
});
NSLog(@"block 4 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 4");
});
NSLog(@"block 5 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 5");
});
NSLog(@"block 6 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 6");
});
NSLog(@"block 7 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 7");
});
NSLog(@"block 8 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 8");
});
NSLog(@"block 9 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 9");
});
NSLog(@"block 10 added");
dispatch_sync(concurrentQueue, ^{
NSLog(@"block 10");
});
NSLog(@"ALL BLOCK ADDED TO THE QUEUE --> FUNCTION RETURNED");