lib/libc_r/uthread/uthread_attr_get_np.c

   1 /*
   2  * Copyright (c) 2002,2003 Alexey Zelkin <phantom@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/lib/libc_r/uthread/uthread_attr_get_np.c,v 1.2.2.2 2003/02/03 10:13:28 phantom Exp $
  27  * $DragonFly: src/lib/libc_r/uthread/uthread_attr_get_np.c,v 1.3 2005/05/30 22:50:53 joerg Exp $
  28  */
  29 #include <errno.h>
  30 #include <string.h>
  31 #include <pthread.h>
  32 #include <pthread_np.h>
  33 #include "pthread_private.h"
  34
  35 int
  36 _pthread_attr_get_np(pthread_t pid, pthread_attr_t *dst)
  37 {
  38         int     ret;
  39
  40         if (pid == NULL || dst == NULL || *dst == NULL)
  41                 return (EINVAL);
  42
  43         if ((ret = _find_thread(pid)) != 0)
  44                 return (ret);
  45
  46         memcpy(*dst, &pid->attr, sizeof(struct pthread_attr));
  47
  48         /*
  49          * Special case, if stack address was not provided by caller
  50          * of pthread_create(), then return address allocated internally
  51          */
  52         if ((*dst)->stackaddr_attr == NULL)
  53                 (*dst)->stackaddr_attr = pid->stack;
  54
  55         return (0);
  56 }
  57
  58 __strong_reference(_pthread_attr_get_np, pthread_attr_get_np);