NSThread uses dispatch threads on newer versions of OS X - 10.6 and higher 
IIRC...

Sent from my iPad

On Jun 2, 2012, at 6:58 PM, Ian MacArthur <[email protected]> wrote:

> 
> On 1 Jun 2012, at 22:59, Greg Ercolano wrote:
> 
>> On 06/01/12 14:33, Ian MacArthur wrote:
>>> 
>>> I was under the impression that it would play fine with pthreads,
>>> if you made at least one (possibly dummy) NSThread first, just to
>>> "wake up" the thread safe mechanisms
>> 
>>    Yes, that is true and is one of the two approaches
>>    we can use. The STR goes into the details.
>> 
>>    I was thinking the 'correct' approach would be to use
>>    Apple's native NSThread library in our Fl_cocoa.mm code.
>> 
>>    But if that turns out to be bumpy, the approach you mention
>>    is surely the easier of the two to implement.
>> 
>>    One reason that might be necessary; the code uses pthread_join()
>>    which might not have an NSThread equivalent.
>> 
>>    Here's the thread features the add_fd() code currently uses
>>    on the mac (cocoa and carbon):
>> 
>>        mutex lock/unlock
>>        pthread_create
>>        pthread_cancel
>>        pthread_join
>> 
>>    The thread cancel stuff is used by the destructor code
>>    to ensure any child thread started is stopped. 'join'
>>    is used to wait for completion.
> 
> Yup - that would be my worry  though; we need to join so we can wait for the 
> worker thread expiring... But will that play well mixing pthreads and 
> NSThread's...? I just don't know (though on OSX it is entirely possible the 
> NSThread and pthread have a common underlying implementation of course, I 
> guess...
> 
> 
>> 
>>    This can perhaps be done differently with NSThread,
>>    but sometimes it's better to change less code than to
>>    be 'native'.
>> 
>>    Wasn't sure on this, which is why I seek Manolo's input,
>>    as he's probably the most familiar with the NSThread stuff.
> 
> Seems like a sound idea!
> 
> Cheers,
> -- 
> Ian
> 
> 
> 
> 
> 
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