plan9fox/sys/include/ape/select.h
2011-03-30 19:35:09 +03:00

34 lines
779 B
C

#ifndef __SELECT_H
#define __SELECT_H
#ifndef _BSD_EXTENSION
This header file is an extension to ANSI/POSIX
#endif
#pragma lib "/$M/lib/ape/libap.a"
#ifndef _FD_SET_T
#define _FD_SET_T
/* BSD select, and adjunct types and macros */
/* assume 96 fds is sufficient for fdset size */
typedef struct fd_set {
long fds_bits[3];
} fd_set;
#define FD_SET(n,p) ((p)->fds_bits[(n)>>5] |= (1 << ((n) &0x1f)))
#define FD_CLR(n,p) ((p)->fds_bits[(n)>>5] &= ~(1 << ((n) &0x1f)))
#define FD_ISSET(n,p) ((p)->fds_bits[(n)>>5] & (1 << ((n) &0x1f)))
#define FD_ZERO(p) ((p)->fds_bits[0] =0, (p)->fds_bits[1] =0, (p)->fds_bits[2] =0)
#endif
#ifdef __cplusplus
extern "C" {
#endif
extern int select(int, fd_set*, fd_set*, fd_set*, struct timeval *);
#ifdef __cplusplus
}
#endif
#endif