select.h raw

   1  #ifndef _SYS_SELECT_H
   2  #define _SYS_SELECT_H
   3  #ifdef __cplusplus
   4  extern "C" {
   5  #endif
   6  
   7  #include <features.h>
   8  
   9  #define __NEED_size_t
  10  #define __NEED_time_t
  11  #define __NEED_suseconds_t
  12  #define __NEED_struct_timeval
  13  #define __NEED_struct_timespec
  14  #define __NEED_sigset_t
  15  
  16  #include <bits/alltypes.h>
  17  
  18  #define FD_SETSIZE 1024
  19  
  20  typedef unsigned long fd_mask;
  21  
  22  typedef struct {
  23  	unsigned long fds_bits[FD_SETSIZE / 8 / sizeof(long)];
  24  } fd_set;
  25  
  26  #define FD_ZERO(s) do { int __i; unsigned long *__b=(s)->fds_bits; for(__i=sizeof (fd_set)/sizeof (long); __i; __i--) *__b++=0; } while(0)
  27  #define FD_SET(d, s)   ((s)->fds_bits[(d)/(8*sizeof(long))] |= (1UL<<((d)%(8*sizeof(long)))))
  28  #define FD_CLR(d, s)   ((s)->fds_bits[(d)/(8*sizeof(long))] &= ~(1UL<<((d)%(8*sizeof(long)))))
  29  #define FD_ISSET(d, s) !!((s)->fds_bits[(d)/(8*sizeof(long))] & (1UL<<((d)%(8*sizeof(long)))))
  30  
  31  int select (int, fd_set *__restrict, fd_set *__restrict, fd_set *__restrict, struct timeval *__restrict);
  32  int pselect (int, fd_set *__restrict, fd_set *__restrict, fd_set *__restrict, const struct timespec *__restrict, const sigset_t *__restrict);
  33  
  34  #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
  35  #define NFDBITS (8*(int)sizeof(long))
  36  #endif
  37  
  38  #if _REDIR_TIME64
  39  __REDIR(select, __select_time64);
  40  __REDIR(pselect, __pselect_time64);
  41  #endif
  42  
  43  #ifdef __cplusplus
  44  }
  45  #endif
  46  #endif
  47