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Diffstat (limited to 'libpthread/nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c')
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c b/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c
new file mode 100644
index 000000000..5a3d418a9
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_attr_getaffinity.c
@@ -0,0 +1,56 @@
+/* Copyright (C) 2003, 2004 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <assert.h>
+#include <errno.h>
+#include <pthreadP.h>
+#include <string.h>
+#include <sysdep.h>
+#include <sys/types.h>
+
+
+int
+__pthread_attr_getaffinity_new (const pthread_attr_t *attr, size_t cpusetsize,
+ cpu_set_t *cpuset)
+{
+ const struct pthread_attr *iattr;
+
+ assert (sizeof (*attr) >= sizeof (struct pthread_attr));
+ iattr = (const struct pthread_attr *) attr;
+
+ if (iattr->cpuset != NULL)
+ {
+ /* Check whether there are any bits set beyond the limits
+ the user requested. */
+ size_t cnt;
+ for (cnt = cpusetsize; cnt < iattr->cpusetsize; ++cnt)
+ if (((char *) iattr->cpuset)[cnt] != 0)
+ return EINVAL;
+
+ void *p = mempcpy (cpuset, iattr->cpuset, iattr->cpusetsize);
+ if (cpusetsize > iattr->cpusetsize)
+ memset (p, '\0', cpusetsize - iattr->cpusetsize);
+ }
+ else
+ /* We have no information. */
+ memset (cpuset, -1, cpusetsize);
+
+ return 0;
+}
+weak_alias(__pthread_attr_getaffinity_new, pthread_attr_getaffinity_np)