//1、串行队列
dispatch_queue_t queue_1 = dispatch_queue_create("hehehe", NULL);
//2、并行队列
dispatch_queue_t queue_2 = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
//3、获取主队列
dispatch_queue_t queue_main = dispatch_get_main_queue();
//函数
//1、同步函数
// dispatch_sync(queue_1, ^{
//// NSLog(@"sync_1");
// NSThread * thread = [NSThread currentThread];
// NSLog(@"sync_1 = %@",thread);
//
// });
// dispatch_sync(queue_2, ^{
// NSThread * thread = [NSThread currentThread];
// NSLog(@"sync_2 = %@",thread);
// });
//
// dispatch_sync(queue_main, ^{
// NSThread * thread = [NSThread currentThread];
// NSLog(@"sync_M = %@",thread);
// });
//2、异步函数
// dispatch_async(queue_1, ^{
//// NSLog(@"asycn——1111");
// NSThread * thread = [NSThread currentThread];
// NSLog(@"sync_1 = %@",thread);
// });
//
// dispatch_async(queue_2, ^{
// NSThread * thread = [NSThread currentThread];
// NSLog(@"sync_2 = %@",thread);
// });
//
// dispatch_async(queue_main, ^{
// NSThread * thread = [NSThread currentThread];
// NSLog(@"sync_M = %@",thread);
// });
