shithub: riscv

ref: da1daf301206b27d0385c0d4276c18eaa22e8e25
dir: /sys/include/ape/select.h/

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#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