1#ifndef _SYS_SELECT_H 2#define _SYS_SELECT_H 3#ifdef __cplusplus 4extern "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 20typedef unsigned long fd_mask; 21 22typedef 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 31int select (int, fd_set *__restrict, fd_set *__restrict, fd_set *__restrict, struct timeval *__restrict); 32int 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#ifdef __cplusplus 39} 40#endif 41#endif 42