glibc/nptl/sysdeps/unix/sysv/linux/pthread_attr_setaffinity.c

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/* Copyright (C) 2003, 2004, 2006 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 <assert.h>
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <pthreadP.h>
#include <shlib-compat.h>
/* Defined in pthread_setaffinity.c. */
extern size_t __kernel_cpumask_size attribute_hidden;
extern int __determine_cpumask_size (pid_t tid);
int
__pthread_attr_setaffinity_new (pthread_attr_t *attr, size_t cpusetsize,
const cpu_set_t *cpuset)
{
struct pthread_attr *iattr;
assert (sizeof (*attr) >= sizeof (struct pthread_attr));
iattr = (struct pthread_attr *) attr;
if (cpuset == NULL || cpusetsize == 0)
{
Update. * elf/Makefile (distribute): Add tst-alignmod.c. (tests): Add tst-align. (modules-names): Add tst-alignmod. (CFLAGS-tst-align.c, CFLAGS-tst-alignmod.c): Add $(stack-align-test-flags). ($(objpfx)tst-align): Depend on libdl. ($(objpfx)tst-align.out): Depend on tst-alignmod.so. * elf/tst-align.c: New file. * elf/tst-alignmod.c: New file. * misc/Makefile (CFLAGS-tst-tsearch.c): Add $(stack-align-test-flags). * misc/tst-tsearch.c: Include tst-stack-align.h. (stack_align_check): New array. (cmp_fn, walk_action): Use TEST_STACK_ALIGN (). (main): Report error if stack was not enough aligned in cmp_fn or walk_action. * stdlib/Makefile (CFLAGS-tst-qsort.c): Add $(stack-align-test-flags). * stdlib/tst-qsort.c: Include tst-stack-align.h. (align_check): New var. (compare): Use TEST_STACK_ALIGN () macro. (main): Report error if stack was not enough aligned in compare. * sysdeps/i386/i686/Makefile (stack-align-test-flags): Remove unneeded -mpreferred-stack-boundary=4. * sysdeps/x86_64/tst-stack-align.h: New file. * libio/memstream.c (_IO_wmem_jumps): Remove unused structure. (_IO_wmem_sync, _IO_wmem_finish): Remove unused functions. 2003-09-17 Philip Blundell <philb@gnu.org> * sysdeps/arm/dl-machine.h (CALL_ROUTINE): Deleted. (BX): Define. (ELF_MACHINE_RUNTIME_TRAMPOLINE): Optimise a little. * sysdeps/arm/sysdep.h (DO_RET): New. * sysdeps/unix/sysv/linux/arm/vfork.S: Add #error if __NR_vfork required but not defined. Improve test of error code. 2003-09-17 Jakub Jelinek <jakub@redhat.com>
2003-09-17 19:15:35 +00:00
free (iattr->cpuset);
iattr->cpuset = NULL;
iattr->cpusetsize = 0;
}
Update. * elf/Makefile (distribute): Add tst-alignmod.c. (tests): Add tst-align. (modules-names): Add tst-alignmod. (CFLAGS-tst-align.c, CFLAGS-tst-alignmod.c): Add $(stack-align-test-flags). ($(objpfx)tst-align): Depend on libdl. ($(objpfx)tst-align.out): Depend on tst-alignmod.so. * elf/tst-align.c: New file. * elf/tst-alignmod.c: New file. * misc/Makefile (CFLAGS-tst-tsearch.c): Add $(stack-align-test-flags). * misc/tst-tsearch.c: Include tst-stack-align.h. (stack_align_check): New array. (cmp_fn, walk_action): Use TEST_STACK_ALIGN (). (main): Report error if stack was not enough aligned in cmp_fn or walk_action. * stdlib/Makefile (CFLAGS-tst-qsort.c): Add $(stack-align-test-flags). * stdlib/tst-qsort.c: Include tst-stack-align.h. (align_check): New var. (compare): Use TEST_STACK_ALIGN () macro. (main): Report error if stack was not enough aligned in compare. * sysdeps/i386/i686/Makefile (stack-align-test-flags): Remove unneeded -mpreferred-stack-boundary=4. * sysdeps/x86_64/tst-stack-align.h: New file. * libio/memstream.c (_IO_wmem_jumps): Remove unused structure. (_IO_wmem_sync, _IO_wmem_finish): Remove unused functions. 2003-09-17 Philip Blundell <philb@gnu.org> * sysdeps/arm/dl-machine.h (CALL_ROUTINE): Deleted. (BX): Define. (ELF_MACHINE_RUNTIME_TRAMPOLINE): Optimise a little. * sysdeps/arm/sysdep.h (DO_RET): New. * sysdeps/unix/sysv/linux/arm/vfork.S: Add #error if __NR_vfork required but not defined. Improve test of error code. 2003-09-17 Jakub Jelinek <jakub@redhat.com>
2003-09-17 19:15:35 +00:00
else
{
if (__kernel_cpumask_size == 0)
{
int res = __determine_cpumask_size (THREAD_SELF->tid);
if (res != 0)
/* Some serious problem. */
return res;
}
/* Check whether the new bitmask has any bit set beyond the
last one the kernel accepts. */
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;
if (iattr->cpusetsize != cpusetsize)
Update. * elf/Makefile (distribute): Add tst-alignmod.c. (tests): Add tst-align. (modules-names): Add tst-alignmod. (CFLAGS-tst-align.c, CFLAGS-tst-alignmod.c): Add $(stack-align-test-flags). ($(objpfx)tst-align): Depend on libdl. ($(objpfx)tst-align.out): Depend on tst-alignmod.so. * elf/tst-align.c: New file. * elf/tst-alignmod.c: New file. * misc/Makefile (CFLAGS-tst-tsearch.c): Add $(stack-align-test-flags). * misc/tst-tsearch.c: Include tst-stack-align.h. (stack_align_check): New array. (cmp_fn, walk_action): Use TEST_STACK_ALIGN (). (main): Report error if stack was not enough aligned in cmp_fn or walk_action. * stdlib/Makefile (CFLAGS-tst-qsort.c): Add $(stack-align-test-flags). * stdlib/tst-qsort.c: Include tst-stack-align.h. (align_check): New var. (compare): Use TEST_STACK_ALIGN () macro. (main): Report error if stack was not enough aligned in compare. * sysdeps/i386/i686/Makefile (stack-align-test-flags): Remove unneeded -mpreferred-stack-boundary=4. * sysdeps/x86_64/tst-stack-align.h: New file. * libio/memstream.c (_IO_wmem_jumps): Remove unused structure. (_IO_wmem_sync, _IO_wmem_finish): Remove unused functions. 2003-09-17 Philip Blundell <philb@gnu.org> * sysdeps/arm/dl-machine.h (CALL_ROUTINE): Deleted. (BX): Define. (ELF_MACHINE_RUNTIME_TRAMPOLINE): Optimise a little. * sysdeps/arm/sysdep.h (DO_RET): New. * sysdeps/unix/sysv/linux/arm/vfork.S: Add #error if __NR_vfork required but not defined. Improve test of error code. 2003-09-17 Jakub Jelinek <jakub@redhat.com>
2003-09-17 19:15:35 +00:00
{
void *newp = (cpu_set_t *) realloc (iattr->cpuset, cpusetsize);
if (newp == NULL)
Update. * elf/Makefile (distribute): Add tst-alignmod.c. (tests): Add tst-align. (modules-names): Add tst-alignmod. (CFLAGS-tst-align.c, CFLAGS-tst-alignmod.c): Add $(stack-align-test-flags). ($(objpfx)tst-align): Depend on libdl. ($(objpfx)tst-align.out): Depend on tst-alignmod.so. * elf/tst-align.c: New file. * elf/tst-alignmod.c: New file. * misc/Makefile (CFLAGS-tst-tsearch.c): Add $(stack-align-test-flags). * misc/tst-tsearch.c: Include tst-stack-align.h. (stack_align_check): New array. (cmp_fn, walk_action): Use TEST_STACK_ALIGN (). (main): Report error if stack was not enough aligned in cmp_fn or walk_action. * stdlib/Makefile (CFLAGS-tst-qsort.c): Add $(stack-align-test-flags). * stdlib/tst-qsort.c: Include tst-stack-align.h. (align_check): New var. (compare): Use TEST_STACK_ALIGN () macro. (main): Report error if stack was not enough aligned in compare. * sysdeps/i386/i686/Makefile (stack-align-test-flags): Remove unneeded -mpreferred-stack-boundary=4. * sysdeps/x86_64/tst-stack-align.h: New file. * libio/memstream.c (_IO_wmem_jumps): Remove unused structure. (_IO_wmem_sync, _IO_wmem_finish): Remove unused functions. 2003-09-17 Philip Blundell <philb@gnu.org> * sysdeps/arm/dl-machine.h (CALL_ROUTINE): Deleted. (BX): Define. (ELF_MACHINE_RUNTIME_TRAMPOLINE): Optimise a little. * sysdeps/arm/sysdep.h (DO_RET): New. * sysdeps/unix/sysv/linux/arm/vfork.S: Add #error if __NR_vfork required but not defined. Improve test of error code. 2003-09-17 Jakub Jelinek <jakub@redhat.com>
2003-09-17 19:15:35 +00:00
return ENOMEM;
iattr->cpuset = newp;
iattr->cpusetsize = cpusetsize;
Update. * elf/Makefile (distribute): Add tst-alignmod.c. (tests): Add tst-align. (modules-names): Add tst-alignmod. (CFLAGS-tst-align.c, CFLAGS-tst-alignmod.c): Add $(stack-align-test-flags). ($(objpfx)tst-align): Depend on libdl. ($(objpfx)tst-align.out): Depend on tst-alignmod.so. * elf/tst-align.c: New file. * elf/tst-alignmod.c: New file. * misc/Makefile (CFLAGS-tst-tsearch.c): Add $(stack-align-test-flags). * misc/tst-tsearch.c: Include tst-stack-align.h. (stack_align_check): New array. (cmp_fn, walk_action): Use TEST_STACK_ALIGN (). (main): Report error if stack was not enough aligned in cmp_fn or walk_action. * stdlib/Makefile (CFLAGS-tst-qsort.c): Add $(stack-align-test-flags). * stdlib/tst-qsort.c: Include tst-stack-align.h. (align_check): New var. (compare): Use TEST_STACK_ALIGN () macro. (main): Report error if stack was not enough aligned in compare. * sysdeps/i386/i686/Makefile (stack-align-test-flags): Remove unneeded -mpreferred-stack-boundary=4. * sysdeps/x86_64/tst-stack-align.h: New file. * libio/memstream.c (_IO_wmem_jumps): Remove unused structure. (_IO_wmem_sync, _IO_wmem_finish): Remove unused functions. 2003-09-17 Philip Blundell <philb@gnu.org> * sysdeps/arm/dl-machine.h (CALL_ROUTINE): Deleted. (BX): Define. (ELF_MACHINE_RUNTIME_TRAMPOLINE): Optimise a little. * sysdeps/arm/sysdep.h (DO_RET): New. * sysdeps/unix/sysv/linux/arm/vfork.S: Add #error if __NR_vfork required but not defined. Improve test of error code. 2003-09-17 Jakub Jelinek <jakub@redhat.com>
2003-09-17 19:15:35 +00:00
}
memcpy (iattr->cpuset, cpuset, cpusetsize);
Update. * elf/Makefile (distribute): Add tst-alignmod.c. (tests): Add tst-align. (modules-names): Add tst-alignmod. (CFLAGS-tst-align.c, CFLAGS-tst-alignmod.c): Add $(stack-align-test-flags). ($(objpfx)tst-align): Depend on libdl. ($(objpfx)tst-align.out): Depend on tst-alignmod.so. * elf/tst-align.c: New file. * elf/tst-alignmod.c: New file. * misc/Makefile (CFLAGS-tst-tsearch.c): Add $(stack-align-test-flags). * misc/tst-tsearch.c: Include tst-stack-align.h. (stack_align_check): New array. (cmp_fn, walk_action): Use TEST_STACK_ALIGN (). (main): Report error if stack was not enough aligned in cmp_fn or walk_action. * stdlib/Makefile (CFLAGS-tst-qsort.c): Add $(stack-align-test-flags). * stdlib/tst-qsort.c: Include tst-stack-align.h. (align_check): New var. (compare): Use TEST_STACK_ALIGN () macro. (main): Report error if stack was not enough aligned in compare. * sysdeps/i386/i686/Makefile (stack-align-test-flags): Remove unneeded -mpreferred-stack-boundary=4. * sysdeps/x86_64/tst-stack-align.h: New file. * libio/memstream.c (_IO_wmem_jumps): Remove unused structure. (_IO_wmem_sync, _IO_wmem_finish): Remove unused functions. 2003-09-17 Philip Blundell <philb@gnu.org> * sysdeps/arm/dl-machine.h (CALL_ROUTINE): Deleted. (BX): Define. (ELF_MACHINE_RUNTIME_TRAMPOLINE): Optimise a little. * sysdeps/arm/sysdep.h (DO_RET): New. * sysdeps/unix/sysv/linux/arm/vfork.S: Add #error if __NR_vfork required but not defined. Improve test of error code. 2003-09-17 Jakub Jelinek <jakub@redhat.com>
2003-09-17 19:15:35 +00:00
}
return 0;
}
versioned_symbol (libpthread, __pthread_attr_setaffinity_new,
pthread_attr_setaffinity_np, GLIBC_2_3_4);
#if SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_3_4)
int
__pthread_attr_setaffinity_old (pthread_attr_t *attr, cpu_set_t *cpuset)
{
/* The old interface by default assumed a 1024 processor bitmap. */
return __pthread_attr_setaffinity_new (attr, 128, cpuset);
}
compat_symbol (libpthread, __pthread_attr_setaffinity_old,
pthread_attr_setaffinity_np, GLIBC_2_3_3);
#endif