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60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1997, 1998
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* Sleepycat Software. All rights reserved.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)os_sleep.c 10.12 (Sleepycat) 10/12/98";
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#endif /* not lint */
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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#include <errno.h>
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#ifndef HAVE_SYS_TIME_H
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#include <time.h>
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#endif
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#include <unistd.h>
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#endif
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#include "db_int.h"
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#include "os_jump.h"
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/*
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* __os_sleep --
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* Yield the processor for a period of time.
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*
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* PUBLIC: int __os_sleep __P((u_long, u_long));
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*/
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int
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__os_sleep(secs, usecs)
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u_long secs, usecs; /* Seconds and microseconds. */
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{
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struct timeval t;
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/* Don't require that the values be normalized. */
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for (; usecs >= 1000000; ++secs, usecs -= 1000000)
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;
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if (__db_jump.j_sleep != NULL)
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return (__db_jump.j_sleep(secs, usecs));
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/*
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* It's important that we yield the processor here so that other
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* processes or threads are permitted to run.
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*/
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t.tv_sec = secs;
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t.tv_usec = usecs;
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return (select(0, NULL, NULL, NULL, &t) == -1 ? errno : 0);
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}
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