events.h

[詳解]

#ifndef _EVENTS_H_INCLUDED_
#define _EVENTS_H_INCLUDED_

/*++
/* NAME
/*  events 3h
/* SUMMARY
/*  event manager
/* SYNOPSIS
/*  #include <events.h>
/* DESCRIPTION
/* .nf

 /*
  * System library.
  */
#include <time.h>

 /*
  * External interface.
  */
typedef void (*EVENT_NOTIFY_FN) (int, void *);

#define EVENT_NOTIFY_TIME_FN EVENT_NOTIFY_FN    /* legacy */
#define EVENT_NOTIFY_RDWR_FN EVENT_NOTIFY_FN    /* legacy */

extern time_t event_time(void);
extern void event_enable_read(int, EVENT_NOTIFY_RDWR_FN, void *);
extern void event_enable_write(int, EVENT_NOTIFY_RDWR_FN, void *);
extern void event_disable_readwrite(int);
extern time_t event_request_timer(EVENT_NOTIFY_TIME_FN, void *, int);
extern int event_cancel_timer(EVENT_NOTIFY_TIME_FN, void *);
extern void event_loop(int);
extern void event_drain(int);
extern void event_fork(void);

 /*
  * Event codes.
  */
#define EVENT_READ  (1<<0)      /* read event */
#define EVENT_WRITE (1<<1)      /* write event */
#define EVENT_XCPT  (1<<2)      /* exception */
#define EVENT_TIME  (1<<3)      /* timer event */

#define EVENT_ERROR EVENT_XCPT

 /*
  * Dummies.
  */
#define EVENT_NULL_TYPE     (0)
#define EVENT_NULL_CONTEXT  ((void *) 0)
#define EVENT_NULL_DELAY    (0)

/* LICENSE
/* .ad
/* .fi
/*  The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/*  Wietse Venema
/*  IBM T.J. Watson Research
/*  P.O. Box 704
/*  Yorktown Heights, NY 10598, USA
/* CREATION DATE
/*  Wed Jan 29 17:00:03 EST 1997
/*--*/

#endif