I'm trying to create an NSBlockOperation and set its thread priority. But when
the block executes, the thread priority of the running thread is 0.5. The code
is below. Here's what it logs:
2012-04-25 20:22:47.096 app[13283:494b] UPDATING MAG MODEL. Thread <NSThread:
0x1a1ec0>{name = (null), num = 33} priority: 0.500000. Main: 0
The thread priority should be 0.1. Am I overlooking something?
- (void)
updateMagModel: (NSTimer*) inTimer
{
NSBlockOperation* op = [NSBlockOperation blockOperationWithBlock:
^{
// TODO: update the model.
NSThread* t = [NSThread currentThread];
NSLog(@"UPDATING MAG MODEL. Thread %@ priority: %f. Main: %d", t,
t.threadPriority, [NSThread mainThread] == t);
}];
op.threadPriority = 0.1;
op.completionBlock =
^{
// Schedule the timer to fire the next operation, but
// make sure to do it on the main queue, so that the
// setup code runs on the main queue…
[NSOperationQueue addOperationOnMainQueueWithBlock:
^{
[NSTimer scheduledTimerWithTimeInterval: kMagModelUpdateInterval
target: self
selector: @selector(updateMagModel:)
userInfo: nil
repeats: false];
}];
};
[mMagModelUpdateQueue addOperation: op];
}
Thanks!
--
Rick
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