1*062c5bc4SJason Schmidlapp /*
2*062c5bc4SJason Schmidlapp * pthread_attr_setstacksize.c
3*062c5bc4SJason Schmidlapp *
4*062c5bc4SJason Schmidlapp * Description:
5*062c5bc4SJason Schmidlapp * This translation unit implements operations on thread attribute objects.
6*062c5bc4SJason Schmidlapp *
7*062c5bc4SJason Schmidlapp * --------------------------------------------------------------------------
8*062c5bc4SJason Schmidlapp *
9*062c5bc4SJason Schmidlapp * Pthreads-embedded (PTE) - POSIX Threads Library for embedded systems
10*062c5bc4SJason Schmidlapp * Copyright(C) 2008 Jason Schmidlapp
11*062c5bc4SJason Schmidlapp *
12*062c5bc4SJason Schmidlapp * Contact Email: jschmidlapp@users.sourceforge.net
13*062c5bc4SJason Schmidlapp *
14*062c5bc4SJason Schmidlapp *
15*062c5bc4SJason Schmidlapp * Based upon Pthreads-win32 - POSIX Threads Library for Win32
16*062c5bc4SJason Schmidlapp * Copyright(C) 1998 John E. Bossom
17*062c5bc4SJason Schmidlapp * Copyright(C) 1999,2005 Pthreads-win32 contributors
18*062c5bc4SJason Schmidlapp *
19*062c5bc4SJason Schmidlapp * Contact Email: rpj@callisto.canberra.edu.au
20*062c5bc4SJason Schmidlapp *
21*062c5bc4SJason Schmidlapp * The original list of contributors to the Pthreads-win32 project
22*062c5bc4SJason Schmidlapp * is contained in the file CONTRIBUTORS.ptw32 included with the
23*062c5bc4SJason Schmidlapp * source code distribution. The list can also be seen at the
24*062c5bc4SJason Schmidlapp * following World Wide Web location:
25*062c5bc4SJason Schmidlapp * http://sources.redhat.com/pthreads-win32/contributors.html
26*062c5bc4SJason Schmidlapp *
27*062c5bc4SJason Schmidlapp * This library is free software; you can redistribute it and/or
28*062c5bc4SJason Schmidlapp * modify it under the terms of the GNU Lesser General Public
29*062c5bc4SJason Schmidlapp * License as published by the Free Software Foundation; either
30*062c5bc4SJason Schmidlapp * version 2 of the License, or (at your option) any later version.
31*062c5bc4SJason Schmidlapp *
32*062c5bc4SJason Schmidlapp * This library is distributed in the hope that it will be useful,
33*062c5bc4SJason Schmidlapp * but WITHOUT ANY WARRANTY; without even the implied warranty of
34*062c5bc4SJason Schmidlapp * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
35*062c5bc4SJason Schmidlapp * Lesser General Public License for more details.
36*062c5bc4SJason Schmidlapp *
37*062c5bc4SJason Schmidlapp * You should have received a copy of the GNU Lesser General Public
38*062c5bc4SJason Schmidlapp * License along with this library in the file COPYING.LIB;
39*062c5bc4SJason Schmidlapp * if not, write to the Free Software Foundation, Inc.,
40*062c5bc4SJason Schmidlapp * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
41*062c5bc4SJason Schmidlapp */
42*062c5bc4SJason Schmidlapp
43*062c5bc4SJason Schmidlapp #include "pthread.h"
44*062c5bc4SJason Schmidlapp #include "implement.h"
45*062c5bc4SJason Schmidlapp
46*062c5bc4SJason Schmidlapp
47*062c5bc4SJason Schmidlapp int
pthread_attr_setstacksize(pthread_attr_t * attr,size_t stacksize)48*062c5bc4SJason Schmidlapp pthread_attr_setstacksize (pthread_attr_t * attr, size_t stacksize)
49*062c5bc4SJason Schmidlapp /*
50*062c5bc4SJason Schmidlapp * ------------------------------------------------------
51*062c5bc4SJason Schmidlapp * DOCPUBLIC
52*062c5bc4SJason Schmidlapp * This function specifies the size of the stack on
53*062c5bc4SJason Schmidlapp * which threads created with 'attr' will run.
54*062c5bc4SJason Schmidlapp *
55*062c5bc4SJason Schmidlapp * PARAMETERS
56*062c5bc4SJason Schmidlapp * attr
57*062c5bc4SJason Schmidlapp * pointer to an instance of pthread_attr_t
58*062c5bc4SJason Schmidlapp *
59*062c5bc4SJason Schmidlapp * stacksize
60*062c5bc4SJason Schmidlapp * stack size, in bytes.
61*062c5bc4SJason Schmidlapp *
62*062c5bc4SJason Schmidlapp *
63*062c5bc4SJason Schmidlapp * DESCRIPTION
64*062c5bc4SJason Schmidlapp * This function specifies the size of the stack on
65*062c5bc4SJason Schmidlapp * which threads created with 'attr' will run.
66*062c5bc4SJason Schmidlapp *
67*062c5bc4SJason Schmidlapp * NOTES:
68*062c5bc4SJason Schmidlapp * 1) Function supported only if this macro is
69*062c5bc4SJason Schmidlapp * defined:
70*062c5bc4SJason Schmidlapp *
71*062c5bc4SJason Schmidlapp * _POSIX_THREAD_ATTR_STACKSIZE
72*062c5bc4SJason Schmidlapp *
73*062c5bc4SJason Schmidlapp * 2) Find the default first (using
74*062c5bc4SJason Schmidlapp * pthread_attr_getstacksize), then increase
75*062c5bc4SJason Schmidlapp * by multiplying.
76*062c5bc4SJason Schmidlapp *
77*062c5bc4SJason Schmidlapp * 3) Only use if thread needs more than the
78*062c5bc4SJason Schmidlapp * default.
79*062c5bc4SJason Schmidlapp *
80*062c5bc4SJason Schmidlapp * RESULTS
81*062c5bc4SJason Schmidlapp * 0 successfully set stack size,
82*062c5bc4SJason Schmidlapp * EINVAL 'attr' is invalid or stacksize too
83*062c5bc4SJason Schmidlapp * small or too big.
84*062c5bc4SJason Schmidlapp * ENOSYS function not supported
85*062c5bc4SJason Schmidlapp *
86*062c5bc4SJason Schmidlapp * ------------------------------------------------------
87*062c5bc4SJason Schmidlapp */
88*062c5bc4SJason Schmidlapp {
89*062c5bc4SJason Schmidlapp #ifdef _POSIX_THREAD_ATTR_STACKSIZE
90*062c5bc4SJason Schmidlapp
91*062c5bc4SJason Schmidlapp #if PTHREAD_STACK_MIN > 0
92*062c5bc4SJason Schmidlapp
93*062c5bc4SJason Schmidlapp /* Verify that the stack size is within range. */
94*062c5bc4SJason Schmidlapp if (stacksize < PTHREAD_STACK_MIN)
95*062c5bc4SJason Schmidlapp {
96*062c5bc4SJason Schmidlapp return EINVAL;
97*062c5bc4SJason Schmidlapp }
98*062c5bc4SJason Schmidlapp
99*062c5bc4SJason Schmidlapp #endif
100*062c5bc4SJason Schmidlapp
101*062c5bc4SJason Schmidlapp if (pte_is_attr (attr) != 0)
102*062c5bc4SJason Schmidlapp {
103*062c5bc4SJason Schmidlapp return EINVAL;
104*062c5bc4SJason Schmidlapp }
105*062c5bc4SJason Schmidlapp
106*062c5bc4SJason Schmidlapp /* Everything is okay. */
107*062c5bc4SJason Schmidlapp (*attr)->stacksize = stacksize;
108*062c5bc4SJason Schmidlapp return 0;
109*062c5bc4SJason Schmidlapp
110*062c5bc4SJason Schmidlapp #else
111*062c5bc4SJason Schmidlapp
112*062c5bc4SJason Schmidlapp return ENOSYS;
113*062c5bc4SJason Schmidlapp
114*062c5bc4SJason Schmidlapp #endif /* _POSIX_THREAD_ATTR_STACKSIZE */
115*062c5bc4SJason Schmidlapp
116*062c5bc4SJason Schmidlapp }
117