1*062c5bc4SJason Schmidlapp /*
2*062c5bc4SJason Schmidlapp * pthread_rwlockattr_init.c
3*062c5bc4SJason Schmidlapp *
4*062c5bc4SJason Schmidlapp * Description:
5*062c5bc4SJason Schmidlapp * This translation unit implements read/write lock primitives.
6*062c5bc4SJason Schmidlapp *
7*062c5bc4SJason Schmidlapp * --------------------------------------------------------------------------
8*062c5bc4SJason Schmidlapp *
9*062c5bc4SJason Schmidlapp * Pthreads-embedded (PTE) - POSIX Threads Library for embedded systems
10*062c5bc4SJason Schmidlapp * Copyright(C) 2008 Jason Schmidlapp
11*062c5bc4SJason Schmidlapp *
12*062c5bc4SJason Schmidlapp * Contact Email: jschmidlapp@users.sourceforge.net
13*062c5bc4SJason Schmidlapp *
14*062c5bc4SJason Schmidlapp *
15*062c5bc4SJason Schmidlapp * Based upon Pthreads-win32 - POSIX Threads Library for Win32
16*062c5bc4SJason Schmidlapp * Copyright(C) 1998 John E. Bossom
17*062c5bc4SJason Schmidlapp * Copyright(C) 1999,2005 Pthreads-win32 contributors
18*062c5bc4SJason Schmidlapp *
19*062c5bc4SJason Schmidlapp * Contact Email: rpj@callisto.canberra.edu.au
20*062c5bc4SJason Schmidlapp *
21*062c5bc4SJason Schmidlapp * The original list of contributors to the Pthreads-win32 project
22*062c5bc4SJason Schmidlapp * is contained in the file CONTRIBUTORS.ptw32 included with the
23*062c5bc4SJason Schmidlapp * source code distribution. The list can also be seen at the
24*062c5bc4SJason Schmidlapp * following World Wide Web location:
25*062c5bc4SJason Schmidlapp * http://sources.redhat.com/pthreads-win32/contributors.html
26*062c5bc4SJason Schmidlapp *
27*062c5bc4SJason Schmidlapp * This library is free software; you can redistribute it and/or
28*062c5bc4SJason Schmidlapp * modify it under the terms of the GNU Lesser General Public
29*062c5bc4SJason Schmidlapp * License as published by the Free Software Foundation; either
30*062c5bc4SJason Schmidlapp * version 2 of the License, or (at your option) any later version.
31*062c5bc4SJason Schmidlapp *
32*062c5bc4SJason Schmidlapp * This library is distributed in the hope that it will be useful,
33*062c5bc4SJason Schmidlapp * but WITHOUT ANY WARRANTY; without even the implied warranty of
34*062c5bc4SJason Schmidlapp * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
35*062c5bc4SJason Schmidlapp * Lesser General Public License for more details.
36*062c5bc4SJason Schmidlapp *
37*062c5bc4SJason Schmidlapp * You should have received a copy of the GNU Lesser General Public
38*062c5bc4SJason Schmidlapp * License along with this library in the file COPYING.LIB;
39*062c5bc4SJason Schmidlapp * if not, write to the Free Software Foundation, Inc.,
40*062c5bc4SJason Schmidlapp * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
41*062c5bc4SJason Schmidlapp */
42*062c5bc4SJason Schmidlapp
43*062c5bc4SJason Schmidlapp #include <stdlib.h>
44*062c5bc4SJason Schmidlapp #include <errno.h>
45*062c5bc4SJason Schmidlapp #include <limits.h>
46*062c5bc4SJason Schmidlapp
47*062c5bc4SJason Schmidlapp #include "pthread.h"
48*062c5bc4SJason Schmidlapp #include "implement.h"
49*062c5bc4SJason Schmidlapp
50*062c5bc4SJason Schmidlapp int
pthread_rwlockattr_init(pthread_rwlockattr_t * attr)51*062c5bc4SJason Schmidlapp pthread_rwlockattr_init (pthread_rwlockattr_t * attr)
52*062c5bc4SJason Schmidlapp /*
53*062c5bc4SJason Schmidlapp * ------------------------------------------------------
54*062c5bc4SJason Schmidlapp * DOCPUBLIC
55*062c5bc4SJason Schmidlapp * Initializes a rwlock attributes object with default
56*062c5bc4SJason Schmidlapp * attributes.
57*062c5bc4SJason Schmidlapp *
58*062c5bc4SJason Schmidlapp * PARAMETERS
59*062c5bc4SJason Schmidlapp * attr
60*062c5bc4SJason Schmidlapp * pointer to an instance of pthread_rwlockattr_t
61*062c5bc4SJason Schmidlapp *
62*062c5bc4SJason Schmidlapp *
63*062c5bc4SJason Schmidlapp * DESCRIPTION
64*062c5bc4SJason Schmidlapp * Initializes a rwlock attributes object with default
65*062c5bc4SJason Schmidlapp * attributes.
66*062c5bc4SJason Schmidlapp *
67*062c5bc4SJason Schmidlapp * RESULTS
68*062c5bc4SJason Schmidlapp * 0 successfully initialized attr,
69*062c5bc4SJason Schmidlapp * ENOMEM insufficient memory for attr.
70*062c5bc4SJason Schmidlapp *
71*062c5bc4SJason Schmidlapp * ------------------------------------------------------
72*062c5bc4SJason Schmidlapp */
73*062c5bc4SJason Schmidlapp {
74*062c5bc4SJason Schmidlapp int result = 0;
75*062c5bc4SJason Schmidlapp pthread_rwlockattr_t rwa;
76*062c5bc4SJason Schmidlapp
77*062c5bc4SJason Schmidlapp rwa = (pthread_rwlockattr_t) calloc (1, sizeof (*rwa));
78*062c5bc4SJason Schmidlapp
79*062c5bc4SJason Schmidlapp if (rwa == NULL)
80*062c5bc4SJason Schmidlapp {
81*062c5bc4SJason Schmidlapp result = ENOMEM;
82*062c5bc4SJason Schmidlapp }
83*062c5bc4SJason Schmidlapp else
84*062c5bc4SJason Schmidlapp {
85*062c5bc4SJason Schmidlapp rwa->pshared = PTHREAD_PROCESS_PRIVATE;
86*062c5bc4SJason Schmidlapp }
87*062c5bc4SJason Schmidlapp
88*062c5bc4SJason Schmidlapp *attr = rwa;
89*062c5bc4SJason Schmidlapp
90*062c5bc4SJason Schmidlapp return (result);
91*062c5bc4SJason Schmidlapp } /* pthread_rwlockattr_init */
92