1 /* 2 * pthread_attr_getstacksize.c 3 * 4 * Description: 5 * This translation unit implements operations on thread attribute objects. 6 * 7 * -------------------------------------------------------------------------- 8 * 9 * Pthreads-win32 - POSIX Threads Library for Win32 10 * Copyright(C) 1998 John E. Bossom 11 * Copyright(C) 1999,2005 Pthreads-win32 contributors 12 * 13 * Contact Email: rpj (at) callisto.canberra.edu.au 14 * 15 * The current list of contributors is contained 16 * in the file CONTRIBUTORS included with the source 17 * code distribution. The list can also be seen at the 18 * following World Wide Web location: 19 * http://sources.redhat.com/pthreads-win32/contributors.html 20 * 21 * This library is free software; you can redistribute it and/or 22 * modify it under the terms of the GNU Lesser General Public 23 * License as published by the Free Software Foundation; either 24 * version 2 of the License, or (at your option) any later version. 25 * 26 * This library is distributed in the hope that it will be useful, 27 * but WITHOUT ANY WARRANTY; without even the implied warranty of 28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 29 * Lesser General Public License for more details. 30 * 31 * You should have received a copy of the GNU Lesser General Public 32 * License along with this library in the file COPYING.LIB; 33 * if not, write to the Free Software Foundation, Inc., 34 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 35 */ 36 37 #include "pthread.h" 38 #include "implement.h" 39 40 /* ignore warning "unreferenced formal parameter" */ 41 #if defined(_MSC_VER) 42 #pragma warning( disable : 4100 ) 43 #endif 44 45 int 46 pthread_attr_getstacksize (const pthread_attr_t * attr, size_t * stacksize) 47 /* 48 * ------------------------------------------------------ 49 * DOCPUBLIC 50 * This function determines the size of the stack on 51 * which threads created with 'attr' will run. 52 * 53 * PARAMETERS 54 * attr 55 * pointer to an instance of pthread_attr_t 56 * 57 * stacksize 58 * pointer to size_t into which is returned the 59 * stack size, in bytes. 60 * 61 * 62 * DESCRIPTION 63 * This function determines the size of the stack on 64 * which threads created with 'attr' will run. 65 * 66 * NOTES: 67 * 1) Function supported only if this macro is 68 * defined: 69 * 70 * _POSIX_THREAD_ATTR_STACKSIZE 71 * 72 * 2) Use on newly created attributes object to 73 * find the default stack size. 74 * 75 * RESULTS 76 * 0 successfully retrieved stack size, 77 * EINVAL 'attr' is invalid 78 * ENOSYS function not supported 79 * 80 * ------------------------------------------------------ 81 */ 82 { 83 #if defined(_POSIX_THREAD_ATTR_STACKSIZE) 84 85 if (ptw32_is_attr (attr) != 0) 86 { 87 return EINVAL; 88 } 89 90 /* Everything is okay. */ 91 *stacksize = (*attr)->stacksize; 92 return 0; 93 94 #else 95 96 return ENOSYS; 97 98 #endif /* _POSIX_THREAD_ATTR_STACKSIZE */ 99 100 } 101