1 /*
2 * pthread_attr_setstacksize.c
3 *
4 * Description:
5 * This translation unit implements operations on thread attribute objects.
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 "pthread.h"
44 #include "implement.h"
45
46
47 int
pthread_attr_setstacksize(pthread_attr_t * attr,size_t stacksize)48 pthread_attr_setstacksize (pthread_attr_t * attr, size_t stacksize)
49 /*
50 * ------------------------------------------------------
51 * DOCPUBLIC
52 * This function specifies the size of the stack on
53 * which threads created with 'attr' will run.
54 *
55 * PARAMETERS
56 * attr
57 * pointer to an instance of pthread_attr_t
58 *
59 * stacksize
60 * stack size, in bytes.
61 *
62 *
63 * DESCRIPTION
64 * This function specifies the size of the stack on
65 * which threads created with 'attr' will run.
66 *
67 * NOTES:
68 * 1) Function supported only if this macro is
69 * defined:
70 *
71 * _POSIX_THREAD_ATTR_STACKSIZE
72 *
73 * 2) Find the default first (using
74 * pthread_attr_getstacksize), then increase
75 * by multiplying.
76 *
77 * 3) Only use if thread needs more than the
78 * default.
79 *
80 * RESULTS
81 * 0 successfully set stack size,
82 * EINVAL 'attr' is invalid or stacksize too
83 * small or too big.
84 * ENOSYS function not supported
85 *
86 * ------------------------------------------------------
87 */
88 {
89 #ifdef _POSIX_THREAD_ATTR_STACKSIZE
90
91 #if PTHREAD_STACK_MIN > 0
92
93 /* Verify that the stack size is within range. */
94 if (stacksize < PTHREAD_STACK_MIN)
95 {
96 return EINVAL;
97 }
98
99 #endif
100
101 if (pte_is_attr (attr) != 0)
102 {
103 return EINVAL;
104 }
105
106 /* Everything is okay. */
107 (*attr)->stacksize = stacksize;
108 return 0;
109
110 #else
111
112 return ENOSYS;
113
114 #endif /* _POSIX_THREAD_ATTR_STACKSIZE */
115
116 }
117