sched.h 2.4 KB

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  1. /* Definitions of constants and data structure for POSIX 1003.1b-1993
  2. scheduling interface.
  3. Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
  4. This file is part of the GNU C Library.
  5. The GNU C Library is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU Library General Public License as
  7. published by the Free Software Foundation; either version 2 of the
  8. License, or (at your option) any later version.
  9. The GNU C Library 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 GNU
  12. Library General Public License for more details.
  13. You should have received a copy of the GNU Library General Public
  14. License along with the GNU C Library; see the file COPYING.LIB. If not,
  15. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16. Boston, MA 02111-1307, USA. */
  17. #ifndef __need_schedparam
  18. #ifndef _SCHED_H
  19. # error "Never include <bits/sched.h> directly; use <sched.h> instead."
  20. #endif
  21. /* Scheduling algorithms. */
  22. #define SCHED_OTHER 0
  23. #define SCHED_FIFO 1
  24. #define SCHED_RR 2
  25. #ifdef __USE_MISC
  26. /* Cloning flags. */
  27. # define CSIGNAL 0x000000ff /* Signal mask to be sent at exit. */
  28. # define CLONE_VM 0x00000100 /* Set if VM shared between processes. */
  29. # define CLONE_FS 0x00000200 /* Set if fs info shared between processes. */
  30. # define CLONE_FILES 0x00000400 /* Set if open files shared between processes. */
  31. # define CLONE_SIGHAND 0x00000800 /* Set if signal handlers shared. */
  32. # define CLONE_PID 0x00001000 /* Set if pid shared. */
  33. # define CLONE_PTRACE 0x00002000 /* Set if tracing continues on the child. */
  34. # define CLONE_VFORK 0x00004000 /* Set if the parent wants the child to
  35. wake it up on mm_release. */
  36. #endif
  37. /* The official definition. */
  38. struct sched_param
  39. {
  40. int sched_priority;
  41. };
  42. __BEGIN_DECLS
  43. /* Clone current process. */
  44. #ifdef __USE_MISC
  45. extern int clone __P ((int (*__fn) (void *__arg), void *__child_stack,
  46. int __flags, void *__arg));
  47. #endif
  48. __END_DECLS
  49. #endif /* need schedparam */
  50. #if !defined __defined_schedparam \
  51. && (defined __need_schedparam || defined _SCHED_H)
  52. # define __defined_schedparam 1
  53. /* Data structure to describe a process' schedulability. */
  54. struct __sched_param
  55. {
  56. int sched_priority;
  57. };
  58. # undef __need_schedparam
  59. #endif