From d8761c147db463209939f7c6a11da3a6fb1feecf Mon Sep 17 00:00:00 2001 From: Joakim Tjernlund Date: Mon, 12 Feb 2007 22:52:32 +0000 Subject: Impl. linux syscalls sched_getaffinity/sched_setaffinity but protect its use by #ifdef INTERNAL_SYSCALL since not all arch's has INTERNAL_SYSCALL. All arch's not having INTERNAL_SYSCALL in libc/sysdeps/linux//bits/syscalls.h should get an update from glibc. --- libc/sysdeps/linux/common/sched_getaffinity.c | 52 +++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 libc/sysdeps/linux/common/sched_getaffinity.c (limited to 'libc/sysdeps/linux/common/sched_getaffinity.c') diff --git a/libc/sysdeps/linux/common/sched_getaffinity.c b/libc/sysdeps/linux/common/sched_getaffinity.c new file mode 100644 index 000000000..da1acc855 --- /dev/null +++ b/libc/sysdeps/linux/common/sched_getaffinity.c @@ -0,0 +1,52 @@ +/* Copyright (C) 2002, 2003, 2004, 2005, 2006 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#ifdef __USE_GNU + +#include +#include +#include + +#ifdef INTERNAL_SYSCALL /* remove this when all archs has this #defined */ + +#include +#include +#include + +libc_hidden_proto(memset) + +#define __NR___syscall_sched_getaffinity __NR_sched_getaffinity +static inline _syscall3(int, __syscall_sched_getaffinity, __kernel_pid_t, pid, + size_t, cpusetsize, cpu_set_t *, cpuset); + +int sched_getaffinity(pid_t pid, size_t cpusetsize, cpu_set_t *cpuset) +{ + int res = (__syscall_sched_getaffinity(pid, MIN(INT_MAX, cpusetsize), + cpuset)); + + if (res != -1) { + /* Clean the rest of the memory the kernel didn't do. */ + memset ((char *) cpuset + res, '\0', cpusetsize - res); + + res = 0; + } + return res; +} +#endif +#endif -- cgit v1.2.3