| /* Copyright (C) 2003 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public License as |
| published by the Free Software Foundation; either version 2.1 of the |
| License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If not, |
| write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include <errno.h> |
| #include <time.h> |
| #include <sysdep.h> |
| #include <kernel-features.h> |
| #include "kernel-posix-timers.h" |
| |
| |
| #ifdef __NR_timer_getoverrun |
| # ifndef __ASSUME_POSIX_TIMERS |
| static int compat_timer_getoverrun (timer_t timerid); |
| # define timer_getoverrun static compat_timer_getoverrun |
| # include <nptl/sysdeps/pthread/timer_getoverr.c> |
| # undef timer_getoverrun |
| # endif |
| |
| # ifdef timer_getoverrun_alias |
| # define timer_getoverrun timer_getoverrun_alias |
| # endif |
| |
| |
| int |
| timer_getoverrun (timerid) |
| timer_t timerid; |
| { |
| # undef timer_getoverrun |
| # ifndef __ASSUME_POSIX_TIMERS |
| if (__no_posix_timers >= 0) |
| # endif |
| { |
| struct timer *kt = (struct timer *) timerid; |
| |
| /* Get the information from the kernel. */ |
| int res = INLINE_SYSCALL (timer_getoverrun, 1, kt->ktimerid); |
| |
| # ifndef __ASSUME_POSIX_TIMERS |
| if (res != -1 || errno != ENOSYS) |
| { |
| /* We know the syscall support is available. */ |
| __no_posix_timers = 1; |
| # endif |
| return res; |
| # ifndef __ASSUME_POSIX_TIMERS |
| } |
| # endif |
| |
| # ifndef __ASSUME_POSIX_TIMERS |
| __no_posix_timers = -1; |
| # endif |
| } |
| |
| # ifndef __ASSUME_POSIX_TIMERS |
| return compat_timer_getoverrun (timerid); |
| # endif |
| } |
| #else |
| # ifdef timer_getoverrun_alias |
| # define timer_getoverrun timer_getoverrun_alias |
| # endif |
| /* The new system calls are not available. Use the userlevel |
| implementation. */ |
| # include <nptl/sysdeps/pthread/timer_getoverr.c> |
| #endif |