Re: method called from different threads(?) using a lock
Re: method called from different threads(?) using a lock
- Subject: Re: method called from different threads(?) using a lock
- From: Mitchell Livingston <email@hidden>
- Date: Tue, 22 May 2007 18:00:05 -0700
I did with no luck. I then tried firing the trigger instead of calling it separately, still with no luck.
On Tuesday, May 22, 2007, at 08:49PM, "John Stiles" <email@hidden> wrote:
>I don't think it would be safe to do this from a thread, even if you
>have a lock. Have you tried performOnMainThread?
>
>
>Mitchell Livingston wrote:
>
>> Hello,
>>
>> I have a "badger" class to badge the dock icon with a download speed
>> and completed count (it's a downloader app). I have a single instance
>> of the class, where an NSLock is initialized in the init function.
>> The main method of the badger is called constantly by a timer that
>> runs in the current run loop in multiple modes; this works fine in
>> updating the badge. The whole method is protected by the lock (I lock
>> at the beginning and unlock and the end).
>>
>> The problem occurs when a method in my controller class is called
>> from either a window delegate or a notification. The method called
>> essentially calls the same main method in the badger class with a new
>> value for completed count. However, this is not reflected in the dock
>> icon. It seems that the lock does not work (I tested with tryLock and
>> it never returned NO), and as a result the critical section of the
>> badger class is run twice at the same time, causing the badge to not
>> be updated correctly.
>>
>> Is there something that I did wrong with the lock? Does it have
>> anything to do with being the same instance of the badger being
>> called from multiple threads? Or is it something else entirely? Any
>> help would be appreciated.
>>
>> Thanks,
>> Mitchell Livingston
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