Re: NSTask interaction
Re: NSTask interaction
- Subject: Re: NSTask interaction
- From: Finlay Dobbie <email@hidden>
- Date: Tue, 20 Nov 2001 18:49:24 +0000
On Monday, November 19, 2001, at 01:18 pm, Kristofer Younger wrote:
I found some stuff on CocoaDevCentral http://www.cocoadevcentral.com/
on how to do this (wrapping a unix command in Cocoa), but found that
their solution caused race conditions (I think that's what I
experienced) in the Appkit under certain conditions - so I added, in
addition to NSTask and NSPipe stuff, some stuff with Distributed
Objects to cause the updating of the large amounts of text I get back
from the subtask to flow into a TextView without interruption. DO seems
to handle it well.
See http://82north.com/volumes/Ditto.dmg.gz for the app and the source
to it. (The app does a simple 'ditto' of one folder into another (it's
the brainless (and inefficient) way I backup my home directory.))
In fact, I think a better way of doing what they were doing was to use
-[NSFileHandle readInBackgroundAndNotify], but hey, I digress. I pointed
this out to the article writer, but he seemed adamant that there
wouldn't be any problems with not doing threads properly. He was under
the impresison that the AppKit was thread safe, or something. I have
since learned otherwise... Anyway, they should probably fix this.
-- Finlay