/* * pthread_attr_init.c * * Description: * This translation unit implements operations on thread attribute objects. * * -------------------------------------------------------------------------- * *      Pthreads-win32 - POSIX Threads Library for Win32 *      Copyright(C) 1998 John E. Bossom *      Copyright(C) 1999,2005 Pthreads-win32 contributors *  *      Contact Email: rpj@callisto.canberra.edu.au *  *      The current list of contributors is contained *      in the file CONTRIBUTORS included with the source *      code distribution. The list can also be seen at the *      following World Wide Web location: *      http://sources.redhat.com/pthreads-win32/contributors.html *  *      This 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 of the License, or (at your option) any later version. *  *      This 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 this library in the file COPYING.LIB; *      if not, write to the Free Software Foundation, Inc., *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA */#include "pthread.h"#include "implement.h"intpthread_attr_init (pthread_attr_t * attr)     /*      * ------------------------------------------------------      * DOCPUBLIC      *      Initializes a thread attributes object with default      *      attributes.      *      * PARAMETERS      *      attr      *              pointer to an instance of pthread_attr_t      *      *      * DESCRIPTION      *      Initializes a thread attributes object with default      *      attributes.      *      *      NOTES:      *              1)      Used to define thread attributes      *      * RESULTS      *              0               successfully initialized attr,      *              ENOMEM          insufficient memory for attr.      *      * ------------------------------------------------------      */{  pthread_attr_t attr_result;  if (attr == NULL)    {      /* This is disallowed. */      return EINVAL;    }  attr_result = (pthread_attr_t) malloc (sizeof (*attr_result));  if (attr_result == NULL)    {      return ENOMEM;    }#ifdef _POSIX_THREAD_ATTR_STACKSIZE  /*   * Default to zero size. Unless changed explicitly this   * will allow Win32 to set the size to that of the   * main thread.   */  attr_result->stacksize = 0;#endif#ifdef _POSIX_THREAD_ATTR_STACKADDR  /* FIXME: Set this to something sensible when we support it. */  attr_result->stackaddr = NULL;#endif  attr_result->detachstate = PTHREAD_CREATE_JOINABLE;#if HAVE_SIGSET_T  memset (&(attr_result->sigmask), 0, sizeof (sigset_t));#endif /* HAVE_SIGSET_T */  /*   * Win32 sets new threads to THREAD_PRIORITY_NORMAL and   * not to that of the parent thread. We choose to default to   * this arrangement.   */  attr_result->param.sched_priority = THREAD_PRIORITY_NORMAL;  attr_result->inheritsched = PTHREAD_EXPLICIT_SCHED;  attr_result->contentionscope = PTHREAD_SCOPE_SYSTEM;  attr_result->valid = PTW32_ATTR_VALID;  *attr = attr_result;  return 0;}