81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/*
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* Copyright (c) 1998-2001, 2004 Proofpoint, Inc. and its suppliers.
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* All rights reserved.
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* Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the sendmail distribution.
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*
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* $Id: clock.h,v 1.14 2013-11-22 20:51:31 ca Exp $
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*/
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/*
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** CLOCK.H -- for co-ordinating timed events
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*/
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#ifndef _SM_CLOCK_H
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# define _SM_CLOCK_H 1
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# include <sm/signal.h>
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# if SM_CONF_SETITIMER
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# include <sys/time.h>
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# endif /* SM_CONF_SETITIMER */
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/*
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** STRUCT SM_EVENT -- event queue.
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**
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** Maintained in sorted order.
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**
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** We store the pid of the process that set this event to insure
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** that when we fork we will not take events intended for the parent.
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*/
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struct sm_event
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{
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# if SM_CONF_SETITIMER
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struct timeval ev_time; /* time of the call (microseconds) */
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# else /* SM_CONF_SETITIMER */
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time_t ev_time; /* time of the call (seconds) */
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# endif /* SM_CONF_SETITIMER */
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void (*ev_func)__P((int));
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/* function to call */
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int ev_arg; /* argument to ev_func */
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pid_t ev_pid; /* pid that set this event */
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struct sm_event *ev_link; /* link to next item */
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};
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typedef struct sm_event SM_EVENT;
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/* functions */
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extern void sm_clrevent __P((SM_EVENT *));
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extern void sm_clear_events __P((void));
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extern SM_EVENT *sm_seteventm __P((int, void(*)__P((int)), int));
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extern SM_EVENT *sm_sigsafe_seteventm __P((int, void(*)__P((int)), int));
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extern SIGFUNC_DECL sm_tick __P((int));
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/*
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** SM_SETEVENT -- set an event to happen at a specific time in seconds.
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**
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** Translates the seconds into milliseconds and calls sm_seteventm()
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** to get a specific event to happen in the future at a specific time.
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**
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** Parameters:
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** t -- intvl until next event occurs (seconds).
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** f -- function to call on event.
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** a -- argument to func on event.
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**
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** Returns:
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** result of sm_seteventm().
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**
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** Side Effects:
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** Any that sm_seteventm() have.
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*/
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#define sm_setevent(t, f, a) sm_seteventm((int)((t) * 1000), (f), (a))
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#define sm_sigsafe_setevent(t, f, a) sm_sigsafe_seteventm((int)((t) * 1000), (f), (a))
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#endif /* _SM_CLOCK_H */
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