dealloc on Background Thread
- by Mark Brackett
Is it an error to call dealloc on a UIViewController from a background thread? It seems that UITextView (can?) eventually call _WebTryThreadLock which results in:
bool _WebTryThreadLock(bool): Tried to obtain the web lock from a thread
other than the main thread or the web thread. This may be a result of calling
to UIKit from a secondary thread.
Background: I have a subclassed NSOperation that takes a selector and a target object to notify.
-(id)initWithTarget:(id)target {
if (self = [super init]) {
_target = [target retain];
}
return self;
}
-(void)dealloc {
[_target release];
[super dealloc];
}
If the UIViewController has already been dismissed when the NSOperation gets around to running, then the call to release triggers it's dealloc on a background thread.
