dispatch_queue_create_with_target Function dispatch_queue_create_with_target Creates a new dispatch queue to which you can submit blocks. iOS 10.0+iPadOS 10.0+Mac Catalyst 13.1+macOS 10.12+tvOS 10.0+visionOS 1.0+watchOS 3.0+ dispatch_queue_tdispatch_queue_create_with_target(constchar*label,dispatc...
dispatch_queue_create dispatch_queue_create_with_target # DISPATCH_QUEUE_SERIAL # DISPATCH_QUEUE_CONCURRENT T dispatch_queue_t T dispatch_queue_main_t T dispatch_queue_global_t T dispatch_queue_serial_t T dispatch_queue_concurrent_t Configuring Queue Execution Parameters T dispatch_...
dispatch_queue_create_with_target 在队列上提交任务 概述 dispatch_async dispatch_async_f dispatch_sync dispatch_sync_f dispatch_after dispatch_after_f dispatch_time dispatch_walltime dispatch_once dispatch_once_f dispatch_apply dispatch_apply_f dispatch_barrier_async dispatch_barr...
dispatch_queue_get_label dispatch_queue_get_qos_class dispatch_queue_create_with_target 在队列上提交任务 概述 dispatch_async dispatch_async_f dispatch_sync dispatch_sync_f dispatch_after dispatch_after_f dispatch_time dispatch_walltime dispatch_once dispatch_once_f dispatch_apply...
dispatch_queue_tqueue = dispatch_queue_create("com.gcdTest.queue", DISPATCH_QUEUE_CONCURRENT); dispatch_async(queue, ^{ //读操作 NSLog(@"work1"); }); dispatch_barrier_async(queue, ^{ //barrier block,可用于写操作 //确保资源更新过程中不会有其他线程读取 ...
上面的代码中,先使用dispatch_group_create函数创建Dispatch Group,然后使用dispatch_group_async函数将任务分进组里,然后再添加进队列中。该函数有三个参数,分别是Dispatch Group、Dispatch Queue和要执行任务的闭包。当添加完任务后使用dispatch_group_wait函数等待,直到指定组的任务全部完成,才会继续执行后面的打印语句,...
队列创建底层是_dispatch_lane_create_with_target创建,通过传入的值来确定是串行还是并行队列,dispatch_queue_t也是个对象,也会通过alloc,init进行创建。 5、dispatch_async异步函数 代码语言:javascript 代码运行次数:0 运行 AI代码解释 void dispatch_async(dispatch_queue_t dq, dispatch_block_t work) { dispatch...
在GCD多线程的学习中,我发现了dispatch_set_target_queue这个函数。 在官方文档的释义中:https://developer.apple.com/documentation/dispatch/1452989-dispatch_set_target_queue?language=occ 对象的目标队列负责处理对象。目标队列确定调用对象终结器的队列。此外,修改一些对象的目标队列会改变它们的行为: ...
第一种情况:使用dispatch_set_target_queue(Dispatch Queue1, Dispatch Queue2)实现队列的动态调度管理 1- (void)testTargetQueue2 {2//创建一个串行队列queue13dispatch_queue_t queue1 = dispatch_queue_create("test.1", DISPATCH_QUEUE_SERIAL);4//创建一个串行队列queue25dispatch_queue_t queue2 = dispat...
dispatch_set_target_queue来修改优先级。 2.让不同任务在同一个串行线程运行,下面演示了在并行线程运行的例子,表明在并行线程dispatch_set_target_queue 不能让任务按顺序执行 // // ViewController.m // test_dispatch_o1 // // Created by jeffasd on 16/7/13. ...