glibc/sysdeps/unix/sysv/linux/sched_getcpu.c
2012-02-09 23:18:22 +00:00

36 lines
1.0 KiB
C

/* Copyright (C) 2007 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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; if not, see
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sched.h>
#include <sysdep.h>
int
sched_getcpu (void)
{
#ifdef __NR_getcpu
unsigned int cpu;
int r = INLINE_SYSCALL (getcpu, 3, &cpu, NULL, NULL);
return r == -1 ? r : cpu;
#else
__set_errno (ENOSYS);
return -1;
#endif
}