modernc.org/cc@v1.0.1/v2/headers/linux_arm/usr/include/sched.h (about)

     1  /* Definitions for POSIX 1003.1b-1993 (aka POSIX.4) scheduling interface.
     2     Copyright (C) 1996-2016 Free Software Foundation, Inc.
     3     This file is part of the GNU C Library.
     4  
     5     The GNU C Library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9  
    10     The GNU C Library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14  
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with the GNU C Library; if not, see
    17     <http://www.gnu.org/licenses/>.  */
    18  
    19  #ifndef	_SCHED_H
    20  #define	_SCHED_H	1
    21  
    22  #include <features.h>
    23  
    24  /* Get type definitions.  */
    25  #include <bits/types.h>
    26  
    27  #define __need_size_t
    28  #include <stddef.h>
    29  
    30  #ifdef __USE_XOPEN2K
    31  #define __need_time_t
    32  #define __need_timespec
    33  #endif
    34  #include <time.h>
    35  
    36  #ifndef __pid_t_defined
    37  typedef __pid_t pid_t;
    38  #define __pid_t_defined
    39  #endif
    40  
    41  /* Get system specific constant and data structure definitions.  */
    42  #include <bits/sched.h>
    43  /* Define the real names for the elements of `struct sched_param'.  */
    44  #define sched_priority	__sched_priority
    45  
    46  __BEGIN_DECLS
    47  /* Set scheduling parameters for a process.  */
    48  extern int sched_setparam(__pid_t __pid, const struct sched_param *__param) __THROW;
    49  
    50  /* Retrieve scheduling parameters for a particular process.  */
    51  extern int sched_getparam(__pid_t __pid, struct sched_param *__param) __THROW;
    52  
    53  /* Set scheduling algorithm and/or parameters for a process.  */
    54  extern int sched_setscheduler(__pid_t __pid, int __policy, const struct sched_param *__param) __THROW;
    55  
    56  /* Retrieve scheduling algorithm for a particular purpose.  */
    57  extern int sched_getscheduler(__pid_t __pid) __THROW;
    58  
    59  /* Yield the processor.  */
    60  extern int sched_yield(void) __THROW;
    61  
    62  /* Get maximum priority value for a scheduler.  */
    63  extern int sched_get_priority_max(int __algorithm) __THROW;
    64  
    65  /* Get minimum priority value for a scheduler.  */
    66  extern int sched_get_priority_min(int __algorithm) __THROW;
    67  
    68  /* Get the SCHED_RR interval for the named process.  */
    69  extern int sched_rr_get_interval(__pid_t __pid, struct timespec *__t) __THROW;
    70  
    71  #ifdef __USE_GNU
    72  /* Access macros for `cpu_set'.  */
    73  #define CPU_SETSIZE __CPU_SETSIZE
    74  #define CPU_SET(cpu, cpusetp)	 __CPU_SET_S (cpu, sizeof (cpu_set_t), cpusetp)
    75  #define CPU_CLR(cpu, cpusetp)	 __CPU_CLR_S (cpu, sizeof (cpu_set_t), cpusetp)
    76  #define CPU_ISSET(cpu, cpusetp) __CPU_ISSET_S (cpu, sizeof (cpu_set_t), \
    77  						cpusetp)
    78  #define CPU_ZERO(cpusetp)	 __CPU_ZERO_S (sizeof (cpu_set_t), cpusetp)
    79  #define CPU_COUNT(cpusetp)	 __CPU_COUNT_S (sizeof (cpu_set_t), cpusetp)
    80  
    81  #define CPU_SET_S(cpu, setsize, cpusetp)   __CPU_SET_S (cpu, setsize, cpusetp)
    82  #define CPU_CLR_S(cpu, setsize, cpusetp)   __CPU_CLR_S (cpu, setsize, cpusetp)
    83  #define CPU_ISSET_S(cpu, setsize, cpusetp) __CPU_ISSET_S (cpu, setsize, \
    84  							   cpusetp)
    85  #define CPU_ZERO_S(setsize, cpusetp)	    __CPU_ZERO_S (setsize, cpusetp)
    86  #define CPU_COUNT_S(setsize, cpusetp)	    __CPU_COUNT_S (setsize, cpusetp)
    87  
    88  #define CPU_EQUAL(cpusetp1, cpusetp2) \
    89    __CPU_EQUAL_S (sizeof (cpu_set_t), cpusetp1, cpusetp2)
    90  #define CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
    91    __CPU_EQUAL_S (setsize, cpusetp1, cpusetp2)
    92  
    93  #define CPU_AND(destset, srcset1, srcset2) \
    94    __CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, &)
    95  #define CPU_OR(destset, srcset1, srcset2) \
    96    __CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, |)
    97  #define CPU_XOR(destset, srcset1, srcset2) \
    98    __CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, ^)
    99  #define CPU_AND_S(setsize, destset, srcset1, srcset2) \
   100    __CPU_OP_S (setsize, destset, srcset1, srcset2, &)
   101  #define CPU_OR_S(setsize, destset, srcset1, srcset2) \
   102    __CPU_OP_S (setsize, destset, srcset1, srcset2, |)
   103  #define CPU_XOR_S(setsize, destset, srcset1, srcset2) \
   104    __CPU_OP_S (setsize, destset, srcset1, srcset2, ^)
   105  
   106  #define CPU_ALLOC_SIZE(count) __CPU_ALLOC_SIZE (count)
   107  #define CPU_ALLOC(count) __CPU_ALLOC (count)
   108  #define CPU_FREE(cpuset) __CPU_FREE (cpuset)
   109  
   110  /* Set the CPU affinity for a task */
   111  extern int sched_setaffinity(__pid_t __pid, size_t __cpusetsize, const cpu_set_t * __cpuset) __THROW;
   112  
   113  /* Get the CPU affinity for a task */
   114  extern int sched_getaffinity(__pid_t __pid, size_t __cpusetsize, cpu_set_t * __cpuset) __THROW;
   115  #endif
   116  
   117  __END_DECLS
   118  #endif				/* sched.h */