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-rw-r--r--src/clock.c267
1 files changed, 0 insertions, 267 deletions
diff --git a/src/clock.c b/src/clock.c
deleted file mode 100644
index e6466e6..0000000
--- a/src/clock.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/*
- * Copyright (c) 1998 Sendmail, Inc. All rights reserved.
- * Copyright (c) 1983, 1995-1997 Eric P. Allman. All rights reserved.
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * By using this file, you agree to the terms and conditions set
- * forth in the LICENSE file which can be found at the top level of
- * the sendmail distribution.
- *
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)clock.c 8.35 (Berkeley) 2/2/1999";
-#endif /* not lint */
-
-# include "sendmail.h"
-
-# ifndef sigmask
-# define sigmask(s) (1 << ((s) - 1))
-# endif
-
-/*
-** SETEVENT -- set an event to happen at a specific time.
-**
-** Events are stored in a sorted list for fast processing.
-** An event only applies to the process that set it.
-**
-** Parameters:
-** intvl -- intvl until next event occurs.
-** func -- function to call on event.
-** arg -- argument to func on event.
-**
-** Returns:
-** none.
-**
-** Side Effects:
-** none.
-*/
-
-EVENT *FreeEventList; /* list of free events */
-
-static SIGFUNC_DECL tick __P((int));
-
-EVENT *
-setevent(intvl, func, arg)
- time_t intvl;
- void (*func)();
- int arg;
-{
- register EVENT **evp;
- register EVENT *ev;
- auto time_t now;
- int wasblocked;
-
- if (intvl <= 0)
- {
- syserr("554 setevent: intvl=%ld\n", intvl);
- return (NULL);
- }
-
- wasblocked = blocksignal(SIGALRM);
- now = curtime();
-
- /* search event queue for correct position */
- for (evp = &EventQueue; (ev = *evp) != NULL; evp = &ev->ev_link)
- {
- if (ev->ev_time >= now + intvl)
- break;
- }
-
- /* insert new event */
- ev = FreeEventList;
- if (ev == NULL)
- ev = (EVENT *) xalloc(sizeof *ev);
- else
- FreeEventList = ev->ev_link;
- ev->ev_time = now + intvl;
- ev->ev_func = func;
- ev->ev_arg = arg;
- ev->ev_pid = getpid();
- ev->ev_link = *evp;
- *evp = ev;
-
- if (tTd(5, 5))
- printf("setevent: intvl=%ld, for=%ld, func=%lx, arg=%d, ev=%lx\n",
- (long) intvl, (long)(now + intvl), (u_long) func,
- arg, (u_long) ev);
-
- setsignal(SIGALRM, tick);
- intvl = EventQueue->ev_time - now;
- (void) alarm((unsigned) intvl < 1 ? 1 : intvl);
- if (wasblocked == 0)
- (void) releasesignal(SIGALRM);
- return (ev);
-}
- /*
-** CLREVENT -- remove an event from the event queue.
-**
-** Parameters:
-** ev -- pointer to event to remove.
-**
-** Returns:
-** none.
-**
-** Side Effects:
-** arranges for event ev to not happen.
-*/
-
-void
-clrevent(ev)
- register EVENT *ev;
-{
- register EVENT **evp;
- int wasblocked;
-
- if (tTd(5, 5))
- printf("clrevent: ev=%lx\n", (u_long) ev);
- if (ev == NULL)
- return;
-
- /* find the parent event */
- wasblocked = blocksignal(SIGALRM);
- for (evp = &EventQueue; *evp != NULL; evp = &(*evp)->ev_link)
- {
- if (*evp == ev)
- break;
- }
-
- /* now remove it */
- if (*evp != NULL)
- {
- *evp = ev->ev_link;
- ev->ev_link = FreeEventList;
- FreeEventList = ev;
- }
-
- /* restore clocks and pick up anything spare */
- if (wasblocked == 0)
- releasesignal(SIGALRM);
- if (EventQueue != NULL)
- kill(getpid(), SIGALRM);
-}
- /*
-** TICK -- take a clock tick
-**
-** Called by the alarm clock. This routine runs events as needed.
-** Always called as a signal handler, so we assume that SIGALRM
-** has been blocked.
-**
-** Parameters:
-** One that is ignored; for compatibility with signal handlers.
-**
-** Returns:
-** none.
-**
-** Side Effects:
-** calls the next function in EventQueue.
-*/
-
-/* ARGSUSED */
-static SIGFUNC_DECL
-tick(sig)
- int sig;
-{
- register time_t now;
- register EVENT *ev;
- int mypid = getpid();
- int olderrno = errno;
-
- (void) alarm(0);
- now = curtime();
-
- if (tTd(5, 4))
- printf("tick: now=%ld\n", (long) now);
-
- /* reset signal in case System V semantics */
- (void) setsignal(SIGALRM, tick);
- while ((ev = EventQueue) != NULL &&
- (ev->ev_time <= now || ev->ev_pid != mypid))
- {
- void (*f)();
- int arg;
- int pid;
-
- /* process the event on the top of the queue */
- ev = EventQueue;
- EventQueue = EventQueue->ev_link;
- if (tTd(5, 6))
- printf("tick: ev=%lx, func=%lx, arg=%d, pid=%d\n",
- (u_long) ev, (u_long) ev->ev_func,
- ev->ev_arg, ev->ev_pid);
-
- /* we must be careful in here because ev_func may not return */
- f = ev->ev_func;
- arg = ev->ev_arg;
- pid = ev->ev_pid;
- ev->ev_link = FreeEventList;
- FreeEventList = ev;
- if (pid != getpid())
- continue;
- if (EventQueue != NULL)
- {
- if (EventQueue->ev_time > now)
- (void) alarm((unsigned) (EventQueue->ev_time - now));
- else
- (void) alarm(3);
- }
-
- /* call ev_func */
- errno = olderrno;
- (*f)(arg);
- (void) alarm(0);
- now = curtime();
- }
- if (EventQueue != NULL)
- (void) alarm((unsigned) (EventQueue->ev_time - now));
- errno = olderrno;
- return SIGFUNC_RETURN;
-}
- /*
-** SLEEP -- a version of sleep that works with this stuff
-**
-** Because sleep uses the alarm facility, I must reimplement
-** it here.
-**
-** Parameters:
-** intvl -- time to sleep.
-**
-** Returns:
-** none.
-**
-** Side Effects:
-** waits for intvl time. However, other events can
-** be run during that interval.
-*/
-
-static bool SleepDone;
-static void endsleep __P((void));
-
-#ifndef SLEEP_T
-# define SLEEP_T unsigned int
-#endif
-
-SLEEP_T
-sleep(intvl)
- unsigned int intvl;
-{
- int was_held;
-
- if (intvl == 0)
- return (SLEEP_T) 0;
- SleepDone = FALSE;
- (void) setevent((time_t) intvl, endsleep, 0);
- was_held = releasesignal(SIGALRM);
- while (!SleepDone)
- pause();
- if (was_held > 0)
- blocksignal(SIGALRM);
- return (SLEEP_T) 0;
-}
-
-static void
-endsleep()
-{
- SleepDone = TRUE;
-}