nptl/pthread_attr_setdetachstate.c

   1 /* Copyright (C) 2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <assert.h>
  21 #include <errno.h>
  22 #include "pthreadP.h"
  23
  24
  25 int
  26 __pthread_attr_setdetachstate (attr, detachstate)
  27      pthread_attr_t *attr;
  28      int detachstate;
  29 {
  30   struct pthread_attr *iattr;
  31
  32   assert (sizeof (*attr) >= sizeof (struct pthread_attr));
  33   iattr = (struct pthread_attr *) attr;
  34
  35   /* Catch invalid values.  */
  36   if (detachstate != PTHREAD_CREATE_DETACHED
  37       && __builtin_expect (detachstate != PTHREAD_CREATE_JOINABLE, 0))
  38     return EINVAL;
  39
  40   /* Set the flag.  It is nonzero if threads are created detached.  */
  41   if (detachstate == PTHREAD_CREATE_DETACHED)
  42     iattr->flags |= ATTR_FLAG_DETACHSTATE;
  43   else
  44     iattr->flags &= ~ATTR_FLAG_DETACHSTATE;
  45
  46   return 0;
  47 }
  48 strong_alias (__pthread_attr_setdetachstate, pthread_attr_setdetachstate)