Re: NSThread Comparisons

[David Chisnall]

On 4 Jan 2008, at 00:11, Justin Kendrick wrote:

> I'm writing a class which needs to determine the current thread and  
> get an object tied to that thread.  I'd like to use an NSDictionary  
> keyed by an NSThread object, but NSThread instances not copyable  
> (and I can't find any good documentation on how NSDictionary matches  
> non-NSString keys anyway).  Beyond that, I thought that I might use  
> an NSValue created with valueWithUnretainedObject:, but that feels  
> really hackish.

You might consider using the EtoileThread framework (3-clause BSDL).   
The ETThread class is a drop-in replacement for NSThread with a few  
other features (auto-creation of an autorelease pool and so on).  When  
a thread is created with an ETThread object, a pointer to that object  
is placed into thread-local storage.  Calling +currentThread returns  
the ETThread object for the current thread, if there is one.  Calling - 
isCurrentThread lets you know if an ETThread object corresponds to the  
current (POSIX) thread.

Have fun.