1 /* 2 * pthread_attr_setstacksize.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 41 int 42 pthread_attr_setstacksize (pthread_attr_t * attr, size_t stacksize) 43 /* 44 * ------------------------------------------------------ 45 * DOCPUBLIC 46 * This function specifies the size of the stack on 47 * which threads created with 'attr' will run. 48 * 49 * PARAMETERS 50 * attr 51 * pointer to an instance of pthread_attr_t 52 * 53 * stacksize 54 * stack size, in bytes. 55 * 56 * 57 * DESCRIPTION 58 * This function specifies the size of the stack on 59 * which threads created with 'attr' will run. 60 * 61 * NOTES: 62 * 1) Function supported only if this macro is 63 * defined: 64 * 65 * _POSIX_THREAD_ATTR_STACKSIZE 66 * 67 * 2) Find the default first (using 68 * pthread_attr_getstacksize), then increase 69 * by multiplying. 70 * 71 * 3) Only use if thread needs more than the 72 * default. 73 * 74 * RESULTS 75 * 0 successfully set stack size, 76 * EINVAL 'attr' is invalid or stacksize too 77 * small or too big. 78 * ENOSYS function not supported 79 * 80 * ------------------------------------------------------ 81 */ 82 { 83 #if defined(_POSIX_THREAD_ATTR_STACKSIZE) 84 85 #if PTHREAD_STACK_MIN > 0 86 87 /* Verify that the stack size is within range. */ 88 if (stacksize < PTHREAD_STACK_MIN) 89 { 90 return EINVAL; 91 } 92 93 #endif 94 95 if (ptw32_is_attr (attr) != 0) 96 { 97 return EINVAL; 98 } 99 100 /* Everything is okay. */ 101 (*attr)->stacksize = stacksize; 102 return 0; 103 104 #else 105 106 return ENOSYS; 107 108 #endif /* _POSIX_THREAD_ATTR_STACKSIZE */ 109 110 } 111
