On Nov 10, 2008, at 1:45 PM, David wrote:
I have NSFIleManager copying files in a secondary thread. The user can select to cancel the copy. Is there a way to force NSFileManager to stop copying a file? The files could be of arbitrary size. A large file could take quite a while to end. I currently check if the thread has been cancelled between files, but I can't figure out how to stop it if its in the middle of copying one file. Is there a way to make NSFileManager stop a copy operation?Is there a way to forcibly kill a thread and thereby stop NSFileManager?
Killing the thread is generally not a good solution, even if you can work it out with pthread functions. In your case, I'd switch to the Carbon File Manager [1] and its asynchronous copying functions. Specifically, look at FSCopyObjectAsync or FSPathCopyObjectAsync, which can evidently be cancelled with FSFileOperationCancel (I'm not sure if you also have to use FSFileOperationUnscheduleFromRunLoop).
-- Adam [1] http://developer.apple.com/documentation/Carbon/Reference/File_Manager/Reference/reference.html
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