OpenGrok

epoll by Davide Libenzi ( efficient event notification retrieval )
Copyright (C) 2003 Davide Libenzi

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Davide Libenzi <davidel (at] xmailserver.org>


epoll_create - open an epoll file descriptor #include <sys/epoll.h> "int epoll_create(int " size ) Open an epoll file descriptor by requesting the kernel allocate an event backing store dimensioned for size descriptors. The size is not the maximum size of the backing store but just a hint to the kernel about how to dimension internal structures. The returned file descriptor will be used for all the subsequent calls to the epoll interface. The file descriptor returned by epoll_create (2) must be closed by using close (2). When successful, epoll_create (2) returns a positive integer identifying the descriptor. When an error occurs,$ epoll_create (2) returns -1 and errno is set appropriately.

ENOMEM There was insufficient memory to create the kernel object.

epoll_create (2) is a new API introduced in Linux kernel 2.5.44 . The interface should be finalized by Linux kernel 2.5.66 . epoll (4) epoll_ctl (2) epoll_wait (2) close (2)