Threading questions

1. If I spawn a secondary thread and the threaded method calls other methods, are those methods r开发者_如何学JAVAun in the secondary thread or the main thread?

2. Is there a way to determine on which thread a specified piece of code is being run?

1. All method calls take place in the current thread, unless you do something like performSelectorInBackground:

2. You can probably tell if you're running in the main thread by comparing [NSRunLoop currentRunLoop] to [NSRunLoop mainRunLoop]

See also: Threading Programming Guide