/* * 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 */#elsetypedef 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 __cplusplusextern "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 */