1 /* 2 * pthread_mutexattr_init.c 3 * 4 * Description: 5 * This translation unit implements mutual exclusion (mutex) 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 45 #include "pthread.h" 46 #include "implement.h" 47 48 49 int 50 pthread_mutexattr_init (pthread_mutexattr_t * attr) 51 /* 52 * ------------------------------------------------------ 53 * DOCPUBLIC 54 * Initializes a mutex attributes object with default 55 * attributes. 56 * 57 * PARAMETERS 58 * attr 59 * pointer to an instance of pthread_mutexattr_t 60 * 61 * 62 * DESCRIPTION 63 * Initializes a mutex attributes object with default 64 * attributes. 65 * 66 * NOTES: 67 * 1) Used to define mutex types 68 * 69 * RESULTS 70 * 0 successfully initialized attr, 71 * ENOMEM insufficient memory for attr. 72 * 73 * ------------------------------------------------------ 74 */ 75 { 76 int result = 0; 77 pthread_mutexattr_t ma; 78 79 ma = (pthread_mutexattr_t) calloc (1, sizeof (*ma)); 80 81 if (ma == NULL) 82 { 83 result = ENOMEM; 84 } 85 else 86 { 87 ma->pshared = PTHREAD_PROCESS_PRIVATE; 88 ma->kind = PTHREAD_MUTEX_DEFAULT; 89 } 90 91 *attr = ma; 92 93 return (result); 94 } /* pthread_mutexattr_init */ 95