1 files changed, 82 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_attr_setaffinity.c b/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_attr_setaffinity.c
new file mode 100644
index 000000000..e3414999c
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_attr_setaffinity.c
@@ -0,0 +1,82 @@
+/* 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 <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthreadP.h>
+
+
+/* Defined in pthread_setaffinity.c.  */
+extern size_t __kernel_cpumask_size;
+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)
+    {
+      free (iattr->cpuset);
+      iattr->cpuset = NULL;
+      iattr->cpusetsize = 0;
+    }
+  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.  */
+      size_t cnt;
+      for (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)
+	{
+	  void *newp = (cpu_set_t *) realloc (iattr->cpuset, cpusetsize);
+	  if (newp == NULL)
+	    return ENOMEM;
+
+	  iattr->cpuset = newp;
+	  iattr->cpusetsize = cpusetsize;
+	}
+
+      memcpy (iattr->cpuset, cpuset, cpusetsize);
+    }
+
+  return 0;
+}
+weak_alias(__pthread_attr_setaffinity_new, pthread_attr_setaffinity_np)