Adding a Single Task to a Queue

最新推荐文章于 2024-09-25 08:43:18 发布

chuanyituoku

最新推荐文章于 2024-09-25 08:43:18 发布

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分类专栏： GCD

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本文介绍如何使用Grand Central Dispatch (GCD) 的 block-based API 来创建自定义队列，并演示如何通过 dispatch_async 和 dispatch_sync 分别实现异步和同步任务调度。

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The following example shows how to use the block-based variants for dispatching tasks asynchronously and synchronously:

dispatch_queue_t myCustomQueue;
myCustomQueue = dispatch_queue_create("com.example.MyCustomQueue", NULL);
dispatch_async(myCustomQueue, ^{
    printf("Do some work here.\n");
});
printf("The first block may or may not have run.\n");
dispatch_sync(myCustomQueue, ^{
    printf("Do some more work here.\n");
});
printf("Both blocks have completed.\n");