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@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
pthread_attr_getstacksize(const pthread_attr_t * attr,size_t * stacksize)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