Question

At first glance it seemed like an easy question, but I just can’t figure how to run an anonymous block on a certain background thread i.e. I am looking for the blocks equivalent of -performSelector:onThread:withObject:waitUntilDone:.

Related: Is it possible to associate a dispatch queue with a certain background thread, just like the main queue is associated with the application’s main thread?

Edit Clarified that I am looking to run an anonymous block

Answer 1

I saw this function RunOnThread() recently in Mike Ash’s PLBlocksPlayground (zip file, see BlocksAdditions.m):

void RunOnThread(NSThread *thread, BOOL wait, BasicBlock block)
{
    [[[block copy] autorelease] performSelector: @selector(my_callBlock) onThread: thread withObject: nil waitUntilDone: wait];
}

This is what I was looking for.

There are a bunch of other very useful blocks related utilities in PLBlocksPlayground, most of which Mr. Ash explains in this post.