59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
#ifndef IOSIGNAL_H
|
|
#define IOSIGNAL_H
|
|
|
|
#include "ntp_refclock.h"
|
|
|
|
/*
|
|
* Some systems (MOST) define SIGPOLL == SIGIO, others SIGIO == SIGPOLL, and
|
|
* a few have separate SIGIO and SIGPOLL signals. This code checks for the
|
|
* SIGIO == SIGPOLL case at compile time.
|
|
* Do not define USE_SIGPOLL or USE_SIGIO.
|
|
* these are interal only to iosignal.c and ntpd/work_fork.c!
|
|
*/
|
|
#if defined(USE_SIGPOLL)
|
|
# undef USE_SIGPOLL
|
|
#endif
|
|
#if defined(USE_SIGIO)
|
|
# undef USE_SIGIO
|
|
#endif
|
|
|
|
/* type of input handler function - only shared between iosignal.c and ntp_io.c */
|
|
typedef void (input_handler_t)(l_fp *);
|
|
|
|
#if defined(HAVE_SIGNALED_IO)
|
|
# if defined(USE_TTY_SIGPOLL) || defined(USE_UDP_SIGPOLL)
|
|
# define USE_SIGPOLL
|
|
# endif
|
|
|
|
# if !defined(USE_TTY_SIGPOLL) || !defined(USE_UDP_SIGPOLL)
|
|
# define USE_SIGIO
|
|
# endif
|
|
|
|
# if defined(USE_SIGIO) && defined(USE_SIGPOLL)
|
|
# if SIGIO == SIGPOLL
|
|
# define USE_SIGIO
|
|
# undef USE_SIGPOLL
|
|
# endif /* SIGIO == SIGPOLL */
|
|
# endif /* USE_SIGIO && USE_SIGPOLL */
|
|
|
|
#define USING_SIGIO() using_sigio
|
|
|
|
extern int using_sigio;
|
|
|
|
extern void block_sigio (void);
|
|
extern void unblock_sigio (void);
|
|
extern int init_clock_sig (struct refclockio *);
|
|
extern void init_socket_sig (int);
|
|
extern void set_signal (input_handler_t *);
|
|
|
|
# define BLOCKIO() block_sigio()
|
|
# define UNBLOCKIO() unblock_sigio()
|
|
|
|
#else /* !HAVE_SIGNALED_IO follows */
|
|
# define BLOCKIO() do {} while (0)
|
|
# define UNBLOCKIO() do {} while (0)
|
|
# define USING_SIGIO() FALSE
|
|
#endif
|
|
|
|
#endif /* IOSIGNAL_H */
|