libc-top-half/musl/include/sys/select.h

   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 #ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
  21 typedef unsigned long fd_mask;
  22 #endif
  23
  24 #ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
  25 typedef struct {
  26         unsigned long fds_bits[FD_SETSIZE / 8 / sizeof(long)];
  27 } fd_set;
  28
  29 #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)
  30 #define FD_SET(d, s)   ((s)->fds_bits[(d)/(8*sizeof(long))] |= (1UL<<((d)%(8*sizeof(long)))))
  31 #define FD_CLR(d, s)   ((s)->fds_bits[(d)/(8*sizeof(long))] &= ~(1UL<<((d)%(8*sizeof(long)))))
  32 #define FD_ISSET(d, s) !!((s)->fds_bits[(d)/(8*sizeof(long))] & (1UL<<((d)%(8*sizeof(long)))))
  33 #else
  34 #include <__fd_set.h>
  35 #endif
  36
  37 int select (int, fd_set *__restrict, fd_set *__restrict, fd_set *__restrict, struct timeval *__restrict);
  38 int pselect (int, fd_set *__restrict, fd_set *__restrict, fd_set *__restrict, const struct timespec *__restrict, const sigset_t *__restrict);
  39
  40 #ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
  41 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
  42 #define NFDBITS (8*(int)sizeof(long))
  43 #endif
  44 #endif
  45
  46 #ifdef __cplusplus
  47 }
  48 #endif
  49 #endif