nsz Git - musl/blob - include/sys/select.h

   1 #ifndef _SYS_SELECT_H
   2 #define _SYS_SELECT_H
   3 #ifdef __cplusplus
   4 extern "C" {
   5 #endif
   6
   7 #define __NEED_size_t
   8 #define __NEED_time_t
   9 #define __NEED_suseconds_t
  10 #define __NEED_struct_timeval
  11 #define __NEED_struct_timespec
  12 #define __NEED_sigset_t
  13
  14 #include <bits/alltypes.h>
  15
  16 #define FD_SETSIZE 1024
  17
  18 typedef struct
  19 {
  20         unsigned long fds_bits[FD_SETSIZE / 8 / sizeof(long)];
  21 } fd_set;
  22
  23 #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)
  24 #define FD_SET(d, s)   ((s)->fds_bits[(d)/(8*sizeof(long))] |= (1<<((d)%(8*sizeof(long)))))
  25 #define FD_CLR(d, s)   ((s)->fds_bits[(d)/(8*sizeof(long))] &= ~(1<<((d)%(8*sizeof(long)))))
  26 #define FD_ISSET(d, s) ((s)->fds_bits[(d)/(8*sizeof(long))] & (1<<((d)%(8*sizeof(long)))))
  27
  28 int select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
  29 int pselect (int, fd_set *, fd_set *, fd_set *, const struct timespec *, const sigset_t *);
  30
  31
  32 #ifdef __cplusplus
  33 }
  34 #endif
  35 #endif