include/sched.h

   1 #ifndef _SCHED_H
   2 #define _SCHED_H
   3 #ifdef __cplusplus
   4 extern "C" {
   5 #endif
   6
   7 #include <features.h>
   8
   9 #define __NEED_struct_timespec
  10 #define __NEED_pid_t
  11 #define __NEED_time_t
  12
  13 #ifdef _GNU_SOURCE
  14 #define __NEED_size_t
  15 #endif
  16
  17 #include <bits/alltypes.h>
  18
  19 struct sched_param {
  20         int sched_priority;
  21         int sched_ss_low_priority;
  22         struct timespec sched_ss_repl_period;
  23         struct timespec sched_ss_init_budget;
  24         int sched_ss_max_repl;
  25 };
  26
  27 int    sched_get_priority_max(int);
  28 int    sched_get_priority_min(int);
  29 int    sched_getparam(pid_t, struct sched_param *);
  30 int    sched_getscheduler(pid_t);
  31 int    sched_rr_get_interval(pid_t, struct timespec *);
  32 int    sched_setparam(pid_t, const struct sched_param *);
  33 int    sched_setscheduler(pid_t, int, const struct sched_param *);
  34 int     sched_yield(void);
  35
  36 #define SCHED_OTHER 0
  37 #define SCHED_FIFO 1
  38 #define SCHED_RR 2
  39 #define SCHED_BATCH 3
  40 #define SCHED_IDLE 5
  41 #define SCHED_DEADLINE 6
  42 #define SCHED_RESET_ON_FORK 0x40000000
  43
  44 #ifdef _GNU_SOURCE
  45 #define CSIGNAL         0x000000ff
  46 #define CLONE_VM        0x00000100
  47 #define CLONE_FS        0x00000200
  48 #define CLONE_FILES     0x00000400
  49 #define CLONE_SIGHAND   0x00000800
  50 #define CLONE_PTRACE    0x00002000
  51 #define CLONE_VFORK     0x00004000
  52 #define CLONE_PARENT    0x00008000
  53 #define CLONE_THREAD    0x00010000
  54 #define CLONE_NEWNS     0x00020000
  55 #define CLONE_SYSVSEM   0x00040000
  56 #define CLONE_SETTLS    0x00080000
  57 #define CLONE_PARENT_SETTID     0x00100000
  58 #define CLONE_CHILD_CLEARTID    0x00200000
  59 #define CLONE_DETACHED  0x00400000
  60 #define CLONE_UNTRACED  0x00800000
  61 #define CLONE_CHILD_SETTID      0x01000000
  62 #define CLONE_NEWUTS    0x04000000
  63 #define CLONE_NEWIPC    0x08000000
  64 #define CLONE_NEWUSER   0x10000000
  65 #define CLONE_NEWPID    0x20000000
  66 #define CLONE_NEWNET    0x40000000
  67 #define CLONE_IO        0x80000000
  68 int clone (int (*)(void *), void *, int, void *, ...);
  69 int unshare(int);
  70 int setns(int, int);
  71
  72 void *memcpy(void *__restrict, const void *__restrict, size_t);
  73 int memcmp(const void *, const void *, size_t);
  74 void *calloc(size_t, size_t);
  75 void free(void *);
  76
  77 typedef struct cpu_set_t { unsigned long __bits[128/sizeof(long)]; } cpu_set_t;
  78 int __sched_cpucount(size_t, const cpu_set_t *);
  79 int sched_getaffinity(pid_t, size_t, cpu_set_t *);
  80 int sched_setaffinity(pid_t, size_t, const cpu_set_t *);
  81
  82 #define __CPU_op_S(i, size, set, op) ( (i)/8U >= (size) ? 0 : \
  83         ((set)->__bits[(i)/8/sizeof(long)] op (1UL<<((i)%(8*sizeof(long))))) )
  84
  85 #define CPU_SET_S(i, size, set) __CPU_op_S(i, size, set, |=)
  86 #define CPU_CLR_S(i, size, set) __CPU_op_S(i, size, set, &=~)
  87 #define CPU_ISSET_S(i, size, set) __CPU_op_S(i, size, set, &)
  88
  89 #define __CPU_op_func_S(func, op) \
  90 static __inline void __CPU_##func##_S(size_t __size, cpu_set_t *__dest, \
  91         const cpu_set_t *__src1, const cpu_set_t *__src2) \
  92 { \
  93         size_t __i; \
  94         for (__i=0; __i<__size/sizeof(long); __i++) \
  95                 __dest->__bits[__i] = __src1->__bits[__i] \
  96                         op __src2->__bits[__i] ; \
  97 }
  98
  99 __CPU_op_func_S(AND, &)
 100 __CPU_op_func_S(OR, |)
 101 __CPU_op_func_S(XOR, ^)
 102
 103 #define CPU_AND_S(a,b,c,d) __CPU_AND_S(a,b,c,d)
 104 #define CPU_OR_S(a,b,c,d) __CPU_OR_S(a,b,c,d)
 105 #define CPU_XOR_S(a,b,c,d) __CPU_XOR_S(a,b,c,d)
 106
 107 #define CPU_COUNT_S(size,set) __sched_cpucount(size,set)
 108 #define CPU_ZERO_S(size,set) memset(set,0,size)
 109 #define CPU_EQUAL_S(size,set1,set2) (!memcmp(set1,set2,size))
 110
 111 #define CPU_ALLOC_SIZE(n) (sizeof(long) * ( (n)/(8*sizeof(long)) \
 112         + ((n)%(8*sizeof(long)) + 8*sizeof(long)-1)/(8*sizeof(long)) ) )
 113 #define CPU_ALLOC(n) ((cpu_set_t *)calloc(1,CPU_ALLOC_SIZE(n)))
 114 #define CPU_FREE(set) free(set)
 115
 116 #define CPU_SETSIZE 128
 117
 118 #define CPU_SET(i, set) CPU_SET_S(i,sizeof(cpu_set_t),set)
 119 #define CPU_CLR(i, set) CPU_CLR_S(i,sizeof(cpu_set_t),set)
 120 #define CPU_ISSET(i, set) CPU_ISSET_S(i,sizeof(cpu_set_t),set)
 121 #define CPU_AND(d,s1,s2) CPU_AND_S(sizeof(cpu_set_t),d,s1,s2)
 122 #define CPU_OR(d,s1,s2) CPU_OR_S(sizeof(cpu_set_t),d,s1,s2)
 123 #define CPU_XOR(d,s1,s2) CPU_XOR_S(sizeof(cpu_set_t),d,s1,s2)
 124 #define CPU_COUNT(set) CPU_COUNT_S(sizeof(cpu_set_t),set)
 125 #define CPU_ZERO(set) CPU_ZERO_S(sizeof(cpu_set_t),set)
 126 #define CPU_EQUAL(s1,s2) CPU_EQUAL_S(sizeof(cpu_set_t),s1,s2)
 127
 128 #endif
 129
 130 #ifdef __cplusplus
 131 }
 132 #endif
 133 #endif