lib/sched.in.h

   1 /* A GNU-like <sched.h>.
   2    Copyright (C) 2008-2020 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifndef _@GUARD_PREFIX@_SCHED_H
  18
  19 #if __GNUC__ >= 3
  20 @PRAGMA_SYSTEM_HEADER@
  21 #endif
  22 @PRAGMA_COLUMNS@
  23
  24 /* The include_next requires a split double-inclusion guard.  */
  25 #if @HAVE_SCHED_H@
  26 # if @HAVE_SYS_CDEFS_H@
  27 #  include <sys/cdefs.h>
  28 # endif
  29 # @INCLUDE_NEXT@ @NEXT_SCHED_H@
  30 #endif
  31
  32 #ifndef _@GUARD_PREFIX@_SCHED_H
  33 #define _@GUARD_PREFIX@_SCHED_H
  34
  35 /* Get pid_t.
  36    This is needed on glibc 2.11 (see
  37    glibc bug <https://sourceware.org/bugzilla/show_bug.cgi?id=13198>)
  38    and Mac OS X 10.5.  */
  39 #include <sys/types.h>
  40
  41 #ifdef __KLIBC__
  42 /* On OS/2 kLIBC, struct sched_param is in spawn.h.  */
  43 # include <spawn.h>
  44 #endif
  45
  46 #ifdef __VMS
  47 /* On OpenVMS, struct sched_param is in <pthread.h>.  */
  48 # include <pthread.h>
  49 #endif
  50
  51 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
  52
  53 /* The definition of _GL_WARN_ON_USE is copied here.  */
  54
  55 #if !@HAVE_STRUCT_SCHED_PARAM@
  56
  57 # if !GNULIB_defined_struct_sched_param
  58 struct sched_param
  59 {
  60   int sched_priority;
  61 };
  62 #  define GNULIB_defined_struct_sched_param 1
  63 # endif
  64
  65 #endif
  66
  67 #if !(defined SCHED_FIFO && defined SCHED_RR && defined SCHED_OTHER)
  68 # define SCHED_FIFO   1
  69 # define SCHED_RR     2
  70 # define SCHED_OTHER  0
  71 #endif
  72
  73 #if @GNULIB_SCHED_YIELD@
  74 # if @REPLACE_SCHED_YIELD@
  75 #  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
  76 #   undef sched_yield
  77 #   define sched_yield rpl_sched_yield
  78 #  endif
  79 _GL_FUNCDECL_RPL (sched_yield, int, (void));
  80 _GL_CXXALIAS_RPL (sched_yield, int, (void));
  81 # else
  82 #  if !@HAVE_SCHED_YIELD@
  83 _GL_FUNCDECL_SYS (sched_yield, int, (void));
  84 #  endif
  85 _GL_CXXALIAS_SYS (sched_yield, int, (void));
  86 # endif
  87 # if __GLIBC__ >= 2
  88 _GL_CXXALIASWARN (sched_yield);
  89 # endif
  90 #elif defined GNULIB_POSIXCHECK
  91 # undef sched_yield
  92 # if HAVE_RAW_DECL_SCHED_YIELD
  93 _GL_WARN_ON_USE (sched_yield, "sched_yield is not portable - "
  94                  "use gnulib module sched_yield for portability");
  95 # endif
  96 #endif
  97
  98 #endif /* _@GUARD_PREFIX@_SCHED_H */
  99 #endif /* _@GUARD_PREFIX@_SCHED_H */