Hi James- Depending on your use case, you might be able to shut the buffering off by something like this...
setvbuf(stdout, NULL, _IONBF, 0); Hope this helps! John On Mar 28, 2010, at 12:56 PM, James W. Walker wrote: > I've been running NSTask and reading the output using -[NSFileHandle > readInBackgroundAndNotify], but in certain situations there was a problem: > Due to the block buffering of standard output, I wasn't getting notified as > soon as some output had been produced. I don't have control over the code > being run by NSTask. Some googling led me to believe that I need to use a > pseudo tty instead of NSPipe to communicate with the NSTask. So, I called > openpty, wrapped the file descriptors in NSFileHandles, set the slave handle > as standard output of the NSTask, and called [masterHandle > readInBackgroundAndNotify]. This almost worked. The problem is that I can't > tell when the output is done. When I was using NSPipe, my > NSFileHandleReadCompletionNotification observer method would get an NSData of > length 0, which told me that there was no more data. Now, that doesn't > happen. I tried observing NSTaskDidTerminateNotification, but that > notification arrives before I've received all the data. Attempting to read > more data with -[NSFileHandle availableData] just hangs. > > Can anyone lead me out of this mire? > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/john%40positivespinmedia.com > > This email sent to j...@positivespinmedia.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
