source: win32/libpthreads-w32-2.8.0/include/sched.h

Last change on this file was 191, checked in by tim, 14 years ago

updated scons build scripts to handle MinGW
added binaries for MinGW build dependencies

File size: 4.6 KB
Line 
1/*
2 * Module: sched.h
3 *
4 * Purpose:
5 *      Provides an implementation of POSIX realtime extensions
6 *      as defined in
7 *
8 *              POSIX 1003.1b-1993      (POSIX.1b)
9 *
10 * --------------------------------------------------------------------------
11 *
12 *      Pthreads-win32 - POSIX Threads Library for Win32
13 *      Copyright(C) 1998 John E. Bossom
14 *      Copyright(C) 1999,2005 Pthreads-win32 contributors
15 *
16 *      Contact Email: rpj@callisto.canberra.edu.au
17 *
18 *      The current list of contributors is contained
19 *      in the file CONTRIBUTORS included with the source
20 *      code distribution. The list can also be seen at the
21 *      following World Wide Web location:
22 *      http://sources.redhat.com/pthreads-win32/contributors.html
23 *
24 *      This library is free software; you can redistribute it and/or
25 *      modify it under the terms of the GNU Lesser General Public
26 *      License as published by the Free Software Foundation; either
27 *      version 2 of the License, or (at your option) any later version.
28 *
29 *      This library is distributed in the hope that it will be useful,
30 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
31 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
32 *      Lesser General Public License for more details.
33 *
34 *      You should have received a copy of the GNU Lesser General Public
35 *      License along with this library in the file COPYING.LIB;
36 *      if not, write to the Free Software Foundation, Inc.,
37 *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
38 */
39#ifndef _SCHED_H
40#define _SCHED_H
41
42#undef PTW32_LEVEL
43
44#if defined(_POSIX_SOURCE)
45#define PTW32_LEVEL 0
46/* Early POSIX */
47#endif
48
49#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309
50#undef PTW32_LEVEL
51#define PTW32_LEVEL 1
52/* Include 1b, 1c and 1d */
53#endif
54
55#if defined(INCLUDE_NP)
56#undef PTW32_LEVEL
57#define PTW32_LEVEL 2
58/* Include Non-Portable extensions */
59#endif
60
61#define PTW32_LEVEL_MAX 3
62
63#if !defined(PTW32_LEVEL)
64#define PTW32_LEVEL PTW32_LEVEL_MAX
65/* Include everything */
66#endif
67
68
69#if __GNUC__ && ! defined (__declspec)
70# error Please upgrade your GNU compiler to one that supports __declspec.
71#endif
72
73/*
74 * When building the DLL code, you should define PTW32_BUILD so that
75 * the variables/functions are exported correctly. When using the DLL,
76 * do NOT define PTW32_BUILD, and then the variables/functions will
77 * be imported correctly.
78 */
79#ifndef PTW32_STATIC_LIB
80#  ifdef PTW32_BUILD
81#    define PTW32_DLLPORT __declspec (dllexport)
82#  else
83#    define PTW32_DLLPORT __declspec (dllimport)
84#  endif
85#else
86#  define PTW32_DLLPORT
87#endif
88
89/*
90 * This is a duplicate of what is in the autoconf config.h,
91 * which is only used when building the pthread-win32 libraries.
92 */
93
94#ifndef PTW32_CONFIG_H
95#  if defined(WINCE)
96#    define NEED_ERRNO
97#    define NEED_SEM
98#  endif
99#  if defined(_UWIN) || defined(__MINGW32__)
100#    define HAVE_MODE_T
101#  endif
102#endif
103
104/*
105 *
106 */
107
108#if PTW32_LEVEL >= PTW32_LEVEL_MAX
109#ifdef NEED_ERRNO
110#include "need_errno.h"
111#else
112#include <errno.h>
113#endif
114#endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */
115
116#if defined(__MINGW32__) || defined(_UWIN)
117#if PTW32_LEVEL >= PTW32_LEVEL_MAX
118/* For pid_t */
119#  include <sys/types.h>
120/* Required by Unix 98 */
121#  include <time.h>
122#endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */
123#else
124typedef int pid_t;
125#endif
126
127/* Thread scheduling policies */
128
129enum {
130  SCHED_OTHER = 0,
131  SCHED_FIFO,
132  SCHED_RR,
133  SCHED_MIN   = SCHED_OTHER,
134  SCHED_MAX   = SCHED_RR
135};
136
137struct sched_param {
138  int sched_priority;
139};
140
141#ifdef __cplusplus
142extern "C"
143{
144#endif                          /* __cplusplus */
145
146PTW32_DLLPORT int __cdecl sched_yield (void);
147
148PTW32_DLLPORT int __cdecl sched_get_priority_min (int policy);
149
150PTW32_DLLPORT int __cdecl sched_get_priority_max (int policy);
151
152PTW32_DLLPORT int __cdecl sched_setscheduler (pid_t pid, int policy);
153
154PTW32_DLLPORT int __cdecl sched_getscheduler (pid_t pid);
155
156/*
157 * Note that this macro returns ENOTSUP rather than
158 * ENOSYS as might be expected. However, returning ENOSYS
159 * should mean that sched_get_priority_{min,max} are
160 * not implemented as well as sched_rr_get_interval.
161 * This is not the case, since we just don't support
162 * round-robin scheduling. Therefore I have chosen to
163 * return the same value as sched_setscheduler when
164 * SCHED_RR is passed to it.
165 */
166#define sched_rr_get_interval(_pid, _interval) \
167  ( errno = ENOTSUP, (int) -1 )
168
169
170#ifdef __cplusplus
171}                               /* End of extern "C" */
172#endif                          /* __cplusplus */
173
174#undef PTW32_LEVEL
175#undef PTW32_LEVEL_MAX
176
177#endif                          /* !_SCHED_H */
178
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