1: /* Copyright (C) 2002, 2003, 2004, 2007 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 <string.h>
   23: #include <unistd.h>
   24: #include "pthreadP.h"
   25: 
   26: #include <shlib-compat.h>
   27: 
   28: 
   29: struct pthread_attr *__attr_list;
   30: int __attr_list_lock = LLL_LOCK_INITIALIZER;
   31: 
   32: 
   33: int
   34: __pthread_attr_init_2_1 (attr)
   35:      pthread_attr_t *attr;
   36: {
   37:   struct pthread_attr *iattr;
   38: 
   39:   /* Many elements are initialized to zero so let us do it all at
   40:      once.  This also takes care of clearing the bytes which are not
   41:      internally used.  */
   42:   memset (attr, '\0', __SIZEOF_PTHREAD_ATTR_T);
   43: 
   44:   assert (sizeof (*attr) >= sizeof (struct pthread_attr));
   45:   iattr = (struct pthread_attr *) attr;
   46: 
   47:   /* Default guard size specified by the standard.  */
   48:   iattr->guardsize = __getpagesize ();
   49: 
   50:   return 0;
   51: }
   52: versioned_symbol (libpthread, __pthread_attr_init_2_1, pthread_attr_init,
   53:                   GLIBC_2_1);
   54: 
   55: 
   56: #if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1)
   57: int
   58: __pthread_attr_init_2_0 (attr)
   59:      pthread_attr_t *attr;
   60: {
   61:   /* This code is specific to the old LinuxThread code which has a too
   62:      small pthread_attr_t definition.  The struct looked like
   63:      this:  */
   64:   struct old_attr
   65:   {
   66:     int detachstate;
   67:     int schedpolicy;
   68:     struct sched_param schedparam;
   69:     int inheritsched;
   70:     int scope;
   71:   };
   72:   struct pthread_attr *iattr;
   73: 
   74:   /* Many elements are initialized to zero so let us do it all at
   75:      once.  This also takes care of clearing the bytes which are not
   76:      internally used.  */
   77:   memset (attr, '\0', sizeof (struct old_attr));
   78: 
   79:   iattr = (struct pthread_attr *) attr;
   80:   iattr->flags |= ATTR_FLAG_OLDATTR;
   81: 
   82:   /* We cannot enqueue the attribute because that member is not in the
   83:      old attribute structure.  */
   84:   return 0;
   85: }
   86: compat_symbol (libpthread, __pthread_attr_init_2_0, pthread_attr_init,
   87:                GLIBC_2_0);
   88: #endif