1 /* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
18 #include <sys/syscall.h>
20 #if defined __NR_sched_getaffinity && defined __USE_GNU
23 # include <sys/types.h>
24 # include <sys/param.h>
25 # define __NR___syscall_sched_getaffinity __NR_sched_getaffinity
26 static __always_inline _syscall3(int, __syscall_sched_getaffinity, __kernel_pid_t, pid,
27 size_t, cpusetsize, cpu_set_t *, cpuset)
29 int sched_getaffinity(pid_t pid, size_t cpusetsize, cpu_set_t *cpuset)
31 int res = (__syscall_sched_getaffinity(pid, MIN(INT_MAX, cpusetsize),
35 /* Clean the rest of the memory the kernel didn't do. */
36 memset ((char *) cpuset + res, '\0', cpusetsize - res);