diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c b/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c deleted file mode 100644 index 874cf4b578..0000000000 --- a/nptl/sysdeps/unix/sysv/linux/pthread_setaffinity.c +++ /dev/null @@ -1,104 +0,0 @@ -/* Copyright (C) 2003-2014 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; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <alloca.h> -#include <errno.h> -#include <pthreadP.h> -#include <sysdep.h> -#include <sys/types.h> -#include <shlib-compat.h> - - -size_t __kernel_cpumask_size attribute_hidden; - - -/* Determine the current affinity. As a side affect we learn - about the size of the cpumask_t in the kernel. */ -int -__determine_cpumask_size (pid_t tid) -{ - INTERNAL_SYSCALL_DECL (err); - int res; - - size_t psize = 128; - void *p = alloca (psize); - - while (res = INTERNAL_SYSCALL (sched_getaffinity, err, 3, tid, psize, p), - INTERNAL_SYSCALL_ERROR_P (res, err) - && INTERNAL_SYSCALL_ERRNO (res, err) == EINVAL) - p = extend_alloca (p, psize, 2 * psize); - - if (res == 0 || INTERNAL_SYSCALL_ERROR_P (res, err)) - return INTERNAL_SYSCALL_ERRNO (res, err); - - __kernel_cpumask_size = res; - - return 0; -} - - -int -__pthread_setaffinity_new (pthread_t th, size_t cpusetsize, - const cpu_set_t *cpuset) -{ - const struct pthread *pd = (const struct pthread *) th; - - INTERNAL_SYSCALL_DECL (err); - int res; - - if (__glibc_unlikely (__kernel_cpumask_size == 0)) - { - res = __determine_cpumask_size (pd->tid); - if (res != 0) - return res; - } - - /* We now know the size of the kernel cpumask_t. Make sure the user - does not request to set a bit beyond that. */ - for (size_t cnt = __kernel_cpumask_size; cnt < cpusetsize; ++cnt) - if (((char *) cpuset)[cnt] != '\0') - /* Found a nonzero byte. This means the user request cannot be - fulfilled. */ - return EINVAL; - - res = INTERNAL_SYSCALL (sched_setaffinity, err, 3, pd->tid, cpusetsize, - cpuset); - -#ifdef RESET_VGETCPU_CACHE - if (!INTERNAL_SYSCALL_ERROR_P (res, err)) - RESET_VGETCPU_CACHE (); -#endif - - return (INTERNAL_SYSCALL_ERROR_P (res, err) - ? INTERNAL_SYSCALL_ERRNO (res, err) - : 0); -} -versioned_symbol (libpthread, __pthread_setaffinity_new, - pthread_setaffinity_np, GLIBC_2_3_4); - - -#if SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_3_4) -int -__pthread_setaffinity_old (pthread_t th, cpu_set_t *cpuset) -{ - /* The old interface by default assumed a 1024 processor bitmap. */ - return __pthread_setaffinity_new (th, 128, cpuset); -} -compat_symbol (libpthread, __pthread_setaffinity_old, pthread_setaffinity_np, - GLIBC_2_3_3); -#endif |