On Thu, Jun 29, 2006 at 08:46:20AM -0400, Adam Grossman wrote: > hello. > > i am currently writing on app for linux kernel 2.4 and 2.6. on 2.4, it > works great. on 2.4, when a call event_del on a certain event, i get an > error, where errno=2 and the strerror(errno) returns "No such file or > directory". what exactly does that error mean? i can not figure out why > this is happening, especially since it is working 2.4, but i am hoping > an explanation of this error will help me narrow it down. >
1) You should only check errno if event_del() returns non-zero. 2) That said, on kernel 2.6 (I assume the above has a typo), if you register a descriptor w/ epoll, fork, then close the desciptor in one of the processes, the descriptor is removed from the epoll() queue in the other process. Thus, when you call event_del() epoll will return an error. I submitted a patch some time ago--which was accepted--which kept everything in a consistent state when this occured so that the error could be safely ignored. Though, you would still need to drop and re-add the descriptor in the process which did NOT close the descriptor. Basically, this means that if you have some sort of multi-process system for handling connections or w'ever, when you fork you need to reinitialize everything, including calling event_init(), IIRC. _______________________________________________ Libevent-users mailing list Libevent-users@monkey.org http://monkey.org/mailman/listinfo/libevent-users
