15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Module: sched.h 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Purpose: 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Provides an implementation of POSIX realtime extensions 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * as defined in 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * POSIX 1003.1b-1993 (POSIX.1b) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * -------------------------------------------------------------------------- 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Pthreads-win32 - POSIX Threads Library for Win32 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright(C) 1998 John E. Bossom 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright(C) 1999,2005 Pthreads-win32 contributors 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Contact Email: rpj@callisto.canberra.edu.au 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The current list of contributors is contained 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in the file CONTRIBUTORS included with the source 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * code distribution. The list can also be seen at the 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * following World Wide Web location: 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * http://sources.redhat.com/pthreads-win32/contributors.html 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This library is free software; you can redistribute it and/or 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * modify it under the terms of the GNU Lesser General Public 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * License as published by the Free Software Foundation; either 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * version 2 of the License, or (at your option) any later version. 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This library is distributed in the hope that it will be useful, 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Lesser General Public License for more details. 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * You should have received a copy of the GNU Lesser General Public 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * License along with this library in the file COPYING.LIB; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * if not, write to the Free Software Foundation, Inc., 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(_SCHED_H) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define _SCHED_H 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef PTW32_SCHED_LEVEL 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(_POSIX_SOURCE) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PTW32_SCHED_LEVEL 0 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Early POSIX */ 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 199309 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef PTW32_SCHED_LEVEL 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PTW32_SCHED_LEVEL 1 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Include 1b, 1c and 1d */ 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(INCLUDE_NP) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef PTW32_SCHED_LEVEL 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PTW32_SCHED_LEVEL 2 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Include Non-Portable extensions */ 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PTW32_SCHED_LEVEL_MAX 3 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if ( defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112 ) || !defined(PTW32_SCHED_LEVEL) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PTW32_SCHED_LEVEL PTW32_SCHED_LEVEL_MAX 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Include everything */ 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(__GNUC__) && !defined(__declspec) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# error Please upgrade your GNU compiler to one that supports __declspec. 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * When building the library, you should define PTW32_BUILD so that 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the variables/functions are exported correctly. When using the library, 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * do NOT define PTW32_BUILD, and then the variables/functions will 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * be imported correctly. 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(PTW32_STATIC_LIB) 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# if defined(PTW32_BUILD) 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define PTW32_DLLPORT __declspec (dllexport) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# else 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define PTW32_DLLPORT __declspec (dllimport) 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define PTW32_DLLPORT 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This is a duplicate of what is in the autoconf config.h, 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * which is only used when building the pthread-win32 libraries. 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(PTW32_CONFIG_H) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# if defined(WINCE) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define NEED_ERRNO 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define NEED_SEM 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# if defined(__MINGW64__) 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define HAVE_STRUCT_TIMESPEC 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define HAVE_MODE_T 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# elif defined(_UWIN) || defined(__MINGW32__) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define HAVE_MODE_T 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if PTW32_SCHED_LEVEL >= PTW32_SCHED_LEVEL_MAX 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(NEED_ERRNO) 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "need_errno.h" 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <errno.h> 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PTW32_SCHED_LEVEL >= PTW32_SCHED_LEVEL_MAX */ 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if (defined(__MINGW64__) || defined(__MINGW32__)) || defined(_UWIN) 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# if PTW32_SCHED_LEVEL >= PTW32_SCHED_LEVEL_MAX 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* For pid_t */ 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# include <sys/types.h> 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Required by Unix 98 */ 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# include <time.h> 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# else 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef int pid_t; 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef int pid_t; 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Thread scheduling policies */ 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)enum { 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SCHED_OTHER = 0, 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SCHED_FIFO, 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SCHED_RR, 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SCHED_MIN = SCHED_OTHER, 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SCHED_MAX = SCHED_RR 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct sched_param { 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int sched_priority; 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(__cplusplus) 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern "C" 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* __cplusplus */ 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PTW32_DLLPORT int __cdecl sched_yield (void); 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PTW32_DLLPORT int __cdecl sched_get_priority_min (int policy); 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PTW32_DLLPORT int __cdecl sched_get_priority_max (int policy); 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PTW32_DLLPORT int __cdecl sched_setscheduler (pid_t pid, int policy); 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PTW32_DLLPORT int __cdecl sched_getscheduler (pid_t pid); 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Note that this macro returns ENOTSUP rather than 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * ENOSYS as might be expected. However, returning ENOSYS 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * should mean that sched_get_priority_{min,max} are 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * not implemented as well as sched_rr_get_interval. 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This is not the case, since we just don't support 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * round-robin scheduling. Therefore I have chosen to 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * return the same value as sched_setscheduler when 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * SCHED_RR is passed to it. 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define sched_rr_get_interval(_pid, _interval) \ 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ( errno = ENOTSUP, (int) -1 ) 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(__cplusplus) 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} /* End of extern "C" */ 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* __cplusplus */ 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef PTW32_SCHED_LEVEL 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef PTW32_SCHED_LEVEL_MAX 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* !_SCHED_H */ 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 184