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@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
pthread_attr_setstacksize(pthread_attr_t * attr,size_t stacksize)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