text: #ifndef _SCHED_H
  #define _SCHED_H
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #include <features.h>
  
  #define __NEED_struct_timespec
  #define __NEED_pid_t
  #define __NEED_time_t
  
  #ifdef _GNU_SOURCE
  #define __NEED_size_t
  #endif
  
  #include <bits/alltypes.h>
  
  struct sched_param {
  	int sched_priority;
  	int sched_ss_low_priority;
  	struct timespec sched_ss_repl_period;
  	struct timespec sched_ss_init_budget;
  	int sched_ss_max_repl;
  };
  
  int    sched_get_priority_max(int);
  int    sched_get_priority_min(int);
  int    sched_getparam(pid_t, struct sched_param *);
  int    sched_getscheduler(pid_t);
  int    sched_rr_get_interval(pid_t, struct timespec *);
  int    sched_setparam(pid_t, const struct sched_param *);
  int    sched_setscheduler(pid_t, int, const struct sched_param *);
  int     sched_yield(void);
  
  #define SCHED_OTHER 0
  #define SCHED_FIFO 1
  #define SCHED_RR 2
  #define SCHED_BATCH 3
  #define SCHED_IDLE 5
  #define SCHED_DEADLINE 6
  #define SCHED_RESET_ON_FORK 0x40000000
  
  #ifdef _GNU_SOURCE
  #define CSIGNAL		0x000000ff
  #define CLONE_VM	0x00000100
  #define CLONE_FS	0x00000200
  #define CLONE_FILES	0x00000400
  #define CLONE_SIGHAND	0x00000800
  #define CLONE_PTRACE	0x00002000
  #define CLONE_VFORK	0x00004000
  #define CLONE_PARENT	0x00008000
  #define CLONE_THREAD	0x00010000
  #define CLONE_NEWNS	0x00020000
  #define CLONE_SYSVSEM	0x00040000
  #define CLONE_SETTLS	0x00080000
  #define CLONE_PARENT_SETTID	0x00100000
  #define CLONE_CHILD_CLEARTID	0x00200000
  #define CLONE_DETACHED	0x00400000
  #define CLONE_UNTRACED	0x00800000
  #define CLONE_CHILD_SETTID	0x01000000
  #define CLONE_NEWCGROUP	0x02000000
  #define CLONE_NEWUTS	0x04000000
  #define CLONE_NEWIPC	0x08000000
  #define CLONE_NEWUSER	0x10000000
  #define CLONE_NEWPID	0x20000000
  #define CLONE_NEWNET	0x40000000
  #define CLONE_IO	0x80000000
  int clone (int (*)(void *), void *, int, void *, ...);
  int unshare(int);
  int setns(int, int);
  
  void *memcpy(void *__restrict, const void *__restrict, size_t);
  int memcmp(const void *, const void *, size_t);
  void *calloc(size_t, size_t);
  void free(void *);
  
  typedef struct cpu_set_t { unsigned long __bits[128/sizeof(long)]; } cpu_set_t;
  int __sched_cpucount(size_t, const cpu_set_t *);
  int sched_getcpu(void);
  int sched_getaffinity(pid_t, size_t, cpu_set_t *);
  int sched_setaffinity(pid_t, size_t, const cpu_set_t *);
  
  #define __CPU_op_S(i, size, set, op) ( (i)/8U >= (size) ? 0 : \
  	(((unsigned long *)(set))[(i)/8/sizeof(long)] op (1UL<<((i)%(8*sizeof(long))))) )
  
  #define CPU_SET_S(i, size, set) __CPU_op_S(i, size, set, |=)
  #define CPU_CLR_S(i, size, set) __CPU_op_S(i, size, set, &=~)
  #define CPU_ISSET_S(i, size, set) __CPU_op_S(i, size, set, &)
  
  #define __CPU_op_func_S(func, op) \
  static __inline void __CPU_##func##_S(size_t __size, cpu_set_t *__dest, \
  	const cpu_set_t *__src1, const cpu_set_t *__src2) \
  { \
  	size_t __i; \
  	for (__i=0; __i<__size/sizeof(long); __i++) \
  		((unsigned long *)__dest)[__i] = ((unsigned long *)__src1)[__i] \
  			op ((unsigned long *)__src2)[__i] ; \
  }
  
  __CPU_op_func_S(AND, &)
  __CPU_op_func_S(OR, |)
  __CPU_op_func_S(XOR, ^)
  
  #define CPU_AND_S(a,b,c,d) __CPU_AND_S(a,b,c,d)
  #define CPU_OR_S(a,b,c,d) __CPU_OR_S(a,b,c,d)
  #define CPU_XOR_S(a,b,c,d) __CPU_XOR_S(a,b,c,d)
  
  #define CPU_COUNT_S(size,set) __sched_cpucount(size,set)
  #define CPU_ZERO_S(size,set) memset(set,0,size)
  #define CPU_EQUAL_S(size,set1,set2) (!memcmp(set1,set2,size))
  
  #define CPU_ALLOC_SIZE(n) (sizeof(long) * ( (n)/(8*sizeof(long)) \
  	+ ((n)%(8*sizeof(long)) + 8*sizeof(long)-1)/(8*sizeof(long)) ) )
  #define CPU_ALLOC(n) ((cpu_set_t *)calloc(1,CPU_ALLOC_SIZE(n)))
  #define CPU_FREE(set) free(set)
  
  #define CPU_SETSIZE 128
  
  #define CPU_SET(i, set) CPU_SET_S(i,sizeof(cpu_set_t),set)
  #define CPU_CLR(i, set) CPU_CLR_S(i,sizeof(cpu_set_t),set)
  #define CPU_ISSET(i, set) CPU_ISSET_S(i,sizeof(cpu_set_t),set)
  #define CPU_AND(d,s1,s2) CPU_AND_S(sizeof(cpu_set_t),d,s1,s2)
  #define CPU_OR(d,s1,s2) CPU_OR_S(sizeof(cpu_set_t),d,s1,s2)
  #define CPU_XOR(d,s1,s2) CPU_XOR_S(sizeof(cpu_set_t),d,s1,s2)
  #define CPU_COUNT(set) CPU_COUNT_S(sizeof(cpu_set_t),set)
  #define CPU_ZERO(set) CPU_ZERO_S(sizeof(cpu_set_t),set)
  #define CPU_EQUAL(s1,s2) CPU_EQUAL_S(sizeof(cpu_set_t),s1,s2)
  
  #endif
  
  #ifdef __cplusplus
  }
  #endif
  #endif
  