41 lines
1.1 KiB
C
Executable File
41 lines
1.1 KiB
C
Executable File
|
|
#ifndef _SYS_SELECT_H
|
|
#define _SYS_SELECT_H 1
|
|
|
|
#include <sys/time.h>
|
|
#include <sys/types.h>
|
|
#include <limits.h>
|
|
|
|
/* Use this datatype as basic storage unit in fd_set */
|
|
typedef u32_t _fdsetword;
|
|
|
|
/* This many bits fit in an fd_set word. */
|
|
#define _FDSETBITSPERWORD (sizeof(_fdsetword)*8)
|
|
|
|
/* We want to store OPEN_MAX fd bits. */
|
|
#define _FDSETWORDS ((OPEN_MAX+_FDSETBITSPERWORD-1)/_FDSETBITSPERWORD)
|
|
|
|
/* This means we can store all of OPEN_MAX. */
|
|
#define FD_SETSIZE OPEN_MAX
|
|
|
|
typedef struct {
|
|
_fdsetword _fdsetval[_FDSETWORDS];
|
|
} fd_set;
|
|
|
|
_PROTOTYPE( int select, (int nfds, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct timeval *timeout) );
|
|
|
|
_PROTOTYPE( void FD_CLR, (int fd, fd_set *fdset));
|
|
_PROTOTYPE( int FD_ISSET, (int fd, fd_set *fdset));
|
|
_PROTOTYPE( void FD_SET, (int fd, fd_set *fdset));
|
|
_PROTOTYPE( void FD_ZERO, (fd_set *fdset));
|
|
|
|
/* possible select() operation types; read, write, errors */
|
|
/* (FS/driver internal use only) */
|
|
#define SEL_RD (1 << 0)
|
|
#define SEL_WR (1 << 1)
|
|
#define SEL_ERR (1 << 2)
|
|
#define SEL_NOTIFY (1 << 3) /* not a real select operation */
|
|
|
|
#endif /* _SYS_SELECT_H */
|
|
|