If that's a POSIX error code it's reporting, then 35 maps to either EAGAIN or EWOULDBLOCK.
I thought it might be you're hitting the max file limit (256 by default) but that would cause open() to return EMFILE. However, pthread_create() can return EAGAIN, and with 2000+ threads you might be hitting this limit: "The system lacked the necessary resources to create another thread, or the system-imposed limit on the total number of threads in a process [PTHREAD_THREADS_MAX] would be exceeded." On Wed, May 8, 2013 at 5:03 PM, Rainer Standke <li...@standke.com> wrote: > Hello all, > > I have an app that's rendering QuickTime movies based on AVFoundation. > It's multi-threaded via GCD, and has up 6 renders going at the same time. > > I am getting un-explained crashes, or at least I can't explain them. The > crashing thread is usually something deep in AVFoundation. I get things > like this one: "AVAssetWriterStatusFailed - An unknown error occurred (35) > - The operation could not be completed" > > When the crashes happen the has something like 2000 threads going, > according to Activity Monitor, and all the Free RAM is used up. > > As a crutch I have implemented a throttling mechanism that basically waits > a number of seconds before starting the next render - but it feels kludgy, > and the app can still crash. > > My question is, besides properly releasing objects etc, is there any thing > I can do to keep the number of threads down, or cause the system to spin > down threads that aren't needed any more? > > Thanks for any pointers, > > Rainer > _______________________________________________ > > 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: > > https://lists.apple.com/mailman/options/cocoa-dev/stephen.butler%40gmail.com > > This email sent to stephen.but...@gmail.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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
