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63 lines
1.2 KiB
C
63 lines
1.2 KiB
C
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/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1997
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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[] = "@(#)db_os_sleep.c 10.6 (Sleepycat) 6/28/97";
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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_ext.h"
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/*
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* __db_sleep --
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* Yield the processor for a period of time.
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*
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* PUBLIC: int __db_sleep __P((u_long, u_long));
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*/
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int
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__db_sleep(secs, usecs)
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u_long secs, usecs; /* Seconds and microseconds. */
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{
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#ifndef _WIN32
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struct timeval t;
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#endif
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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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* 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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#ifdef _WIN32
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Sleep(secs * 1000 + usecs / 1000);
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return (0);
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#else
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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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#endif
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}
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