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