StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POHow do I start up an NSRunLoop, and ensure that it has an NSAutoreleasePool that gets emptied?
text
Body
copied!<p>I have a "sync" task that relies on several "sub-tasks", which include asynchronous network operations, but which all require access to a single <code>NSManagedObjectContext</code>. Due to the threading requirements of <code>NSManagedObjectContext</code>s, I need every one of these sub-tasks to execute on the same thread. Due to the amount of processing being done in some of these tasks, I need them to be on a background thread.</p> <p>At the moment, I'm launching a new thread by doing this in my singleton <code>SyncEngine</code> object's <code>-init</code> method:</p> <pre><code>[self performSelectorInBackground:@selector(initializeSyncThread) withObject:nil]; </code></pre> <p>The <code>-initializeSyncThread</code> method looks like this:</p> <pre><code>- (void)initializeSyncThread { self.syncThread = [NSThread currentThread]; self.managedObjectContext = [(MyAppDelegate *)[UIApplication sharedApplication].delegate createManagedObjectContext]; NSRunLoop *runLoop = [NSRunLoop currentRunLoop]; [runLoop run]; } </code></pre> <p>Is this the correct way to start up the <code>NSRunLoop</code> for this thread? Is there a better way to do it? The run loop only needs to handle 'performSelector' sources, and it (and its thread) should be around for the lifetime of the process.</p> <p>When it comes to setting up an <code>NSAutoreleasePool</code>, should I do this by using Run Loop Observers to create the autorelease pool and drain it after every run-through?</p>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload