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80 lines
1.5 KiB
C
80 lines
1.5 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1997-2002
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* Sleepycat Software. All rights reserved.
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*/
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#include "db_config.h"
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#ifndef lint
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static const char revid[] = "$Id: os_sleep.c,v 11.15 2002/07/12 18:56:52 bostic Exp $";
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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_SELECT_H
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#include <sys/select.h>
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#endif
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#ifdef HAVE_VXWORKS
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#include <sys/times.h>
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#include <time.h>
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#include <selectLib.h>
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#else
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#if TIME_WITH_SYS_TIME
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#include <sys/time.h>
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#include <time.h>
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#else
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#if HAVE_SYS_TIME_H
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#include <sys/time.h>
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#else
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#include <time.h>
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#endif /* HAVE_SYS_TIME_H */
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#endif /* TIME_WITH SYS_TIME */
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#endif /* HAVE_VXWORKS */
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#include <string.h>
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#include <unistd.h>
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#endif
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#include "db_int.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((DB_ENV *, u_long, u_long));
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*/
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int
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__os_sleep(dbenv, secs, usecs)
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DB_ENV *dbenv;
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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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int ret;
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/* Don't require that the values be normalized. */
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for (; usecs >= 1000000; usecs -= 1000000)
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++secs;
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if (DB_GLOBAL(j_sleep) != NULL)
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return (DB_GLOBAL(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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do {
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ret = select(0, NULL, NULL, NULL, &t) == -1 ?
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__os_get_errno() : 0;
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} while (ret == EINTR);
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if (ret != 0)
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__db_err(dbenv, "select: %s", strerror(ret));
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return (ret);
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}
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