179 lines
4.6 KiB
C
179 lines
4.6 KiB
C
/*
|
|
* Module: sched.h
|
|
*
|
|
* Purpose:
|
|
* Provides an implementation of POSIX realtime extensions
|
|
* as defined in
|
|
*
|
|
* POSIX 1003.1b-1993 (POSIX.1b)
|
|
*
|
|
* --------------------------------------------------------------------------
|
|
*
|
|
* Pthreads-win32 - POSIX Threads Library for Win32
|
|
* Copyright(C) 1998 John E. Bossom
|
|
* Copyright(C) 1999,2005 Pthreads-win32 contributors
|
|
*
|
|
* Contact Email: rpj@callisto.canberra.edu.au
|
|
*
|
|
* The current list of contributors is contained
|
|
* in the file CONTRIBUTORS included with the source
|
|
* code distribution. The list can also be seen at the
|
|
* following World Wide Web location:
|
|
* http://sources.redhat.com/pthreads-win32/contributors.html
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library in the file COPYING.LIB;
|
|
* if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
|
|
*/
|
|
#ifndef _SCHED_H
|
|
#define _SCHED_H
|
|
|
|
#undef PTW32_LEVEL
|
|
|
|
#if defined(_POSIX_SOURCE)
|
|
#define PTW32_LEVEL 0
|
|
/* Early POSIX */
|
|
#endif
|
|
|
|
#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309
|
|
#undef PTW32_LEVEL
|
|
#define PTW32_LEVEL 1
|
|
/* Include 1b, 1c and 1d */
|
|
#endif
|
|
|
|
#if defined(INCLUDE_NP)
|
|
#undef PTW32_LEVEL
|
|
#define PTW32_LEVEL 2
|
|
/* Include Non-Portable extensions */
|
|
#endif
|
|
|
|
#define PTW32_LEVEL_MAX 3
|
|
|
|
#if !defined(PTW32_LEVEL)
|
|
#define PTW32_LEVEL PTW32_LEVEL_MAX
|
|
/* Include everything */
|
|
#endif
|
|
|
|
|
|
#if __GNUC__ && ! defined (__declspec)
|
|
# error Please upgrade your GNU compiler to one that supports __declspec.
|
|
#endif
|
|
|
|
/*
|
|
* When building the DLL code, you should define PTW32_BUILD so that
|
|
* the variables/functions are exported correctly. When using the DLL,
|
|
* do NOT define PTW32_BUILD, and then the variables/functions will
|
|
* be imported correctly.
|
|
*/
|
|
#ifndef PTW32_STATIC_LIB
|
|
# ifdef PTW32_BUILD
|
|
# define PTW32_DLLPORT __declspec (dllexport)
|
|
# else
|
|
# define PTW32_DLLPORT __declspec (dllimport)
|
|
# endif
|
|
#else
|
|
# define PTW32_DLLPORT
|
|
#endif
|
|
|
|
/*
|
|
* This is a duplicate of what is in the autoconf config.h,
|
|
* which is only used when building the pthread-win32 libraries.
|
|
*/
|
|
|
|
#ifndef PTW32_CONFIG_H
|
|
# if defined(WINCE)
|
|
# define NEED_ERRNO
|
|
# define NEED_SEM
|
|
# endif
|
|
# if defined(_UWIN) || defined(__MINGW32__)
|
|
# define HAVE_MODE_T
|
|
# endif
|
|
#endif
|
|
|
|
/*
|
|
*
|
|
*/
|
|
|
|
#if PTW32_LEVEL >= PTW32_LEVEL_MAX
|
|
#ifdef NEED_ERRNO
|
|
#include "need_errno.h"
|
|
#else
|
|
#include <errno.h>
|
|
#endif
|
|
#endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */
|
|
|
|
#if defined(__MINGW32__) || defined(_UWIN)
|
|
#if PTW32_LEVEL >= PTW32_LEVEL_MAX
|
|
/* For pid_t */
|
|
# include <sys/types.h>
|
|
/* Required by Unix 98 */
|
|
# include <time.h>
|
|
#endif /* PTW32_LEVEL >= PTW32_LEVEL_MAX */
|
|
#else
|
|
typedef int pid_t;
|
|
#endif
|
|
|
|
/* Thread scheduling policies */
|
|
|
|
enum {
|
|
SCHED_OTHER = 0,
|
|
SCHED_FIFO,
|
|
SCHED_RR,
|
|
SCHED_MIN = SCHED_OTHER,
|
|
SCHED_MAX = SCHED_RR
|
|
};
|
|
|
|
struct sched_param {
|
|
int sched_priority;
|
|
};
|
|
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif /* __cplusplus */
|
|
|
|
PTW32_DLLPORT int __cdecl sched_yield (void);
|
|
|
|
PTW32_DLLPORT int __cdecl sched_get_priority_min (int policy);
|
|
|
|
PTW32_DLLPORT int __cdecl sched_get_priority_max (int policy);
|
|
|
|
PTW32_DLLPORT int __cdecl sched_setscheduler (pid_t pid, int policy);
|
|
|
|
PTW32_DLLPORT int __cdecl sched_getscheduler (pid_t pid);
|
|
|
|
/*
|
|
* Note that this macro returns ENOTSUP rather than
|
|
* ENOSYS as might be expected. However, returning ENOSYS
|
|
* should mean that sched_get_priority_{min,max} are
|
|
* not implemented as well as sched_rr_get_interval.
|
|
* This is not the case, since we just don't support
|
|
* round-robin scheduling. Therefore I have chosen to
|
|
* return the same value as sched_setscheduler when
|
|
* SCHED_RR is passed to it.
|
|
*/
|
|
#define sched_rr_get_interval(_pid, _interval) \
|
|
( errno = ENOTSUP, (int) -1 )
|
|
|
|
|
|
#ifdef __cplusplus
|
|
} /* End of extern "C" */
|
|
#endif /* __cplusplus */
|
|
|
|
#undef PTW32_LEVEL
|
|
#undef PTW32_LEVEL_MAX
|
|
|
|
#endif /* !_SCHED_H */
|
|
|