sysdeps/unix/sysv/linux/epoll_wait.c

   1 /* Linux epoll_wait syscall implementation.
   2    Copyright (C) 2017-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <stddef.h>
  20 #include <unistd.h>
  21 #include <sys/types.h>
  22 #include <sys/epoll.h>
  23
  24 #include <sysdep-cancel.h>
  25
  26 int
  27 epoll_wait (int epfd, struct epoll_event *events, int maxevents, int timeout)
  28 {
  29 #ifdef __NR_epoll_wait
  30   return SYSCALL_CANCEL (epoll_wait, epfd, events, maxevents, timeout);
  31 #else
  32   return epoll_pwait (epfd, events, maxevents, timeout, NULL);
  33 #endif
  34 }