| 1 | /* $Id: RTSemEventWait-generic.cpp 33036 2010-10-11 10:10:33Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTSemEventWait, generic RTSemEventWaitNoResume wrapper.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2009 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*******************************************************************************
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| 29 | * Header Files *
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| 30 | *******************************************************************************/
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| 31 | #define LOG_GROUP RTLOGGROUP_SEM
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| 32 | #include <iprt/semaphore.h>
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| 33 | #include "internal/iprt.h"
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| 34 |
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| 35 | #include <iprt/time.h>
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| 36 | #include <iprt/err.h>
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| 37 | #include <iprt/assert.h>
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| 38 |
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| 39 |
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| 40 | #undef RTSemEventWait /* undo debug mapping */
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| 41 | RTDECL(int) RTSemEventWait(RTSEMEVENT EventSem, RTMSINTERVAL cMillies)
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| 42 | {
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| 43 | int rc;
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| 44 | if (cMillies == RT_INDEFINITE_WAIT)
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| 45 | {
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| 46 | do rc = RTSemEventWaitNoResume(EventSem, cMillies);
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| 47 | while (rc == VERR_INTERRUPTED);
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| 48 | }
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| 49 | else
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| 50 | {
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| 51 | const uint64_t u64Start = RTTimeMilliTS();
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| 52 | rc = RTSemEventWaitNoResume(EventSem, cMillies);
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| 53 | if (rc == VERR_INTERRUPTED)
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| 54 | {
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| 55 | do
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| 56 | {
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| 57 | uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
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| 58 | if (u64Elapsed >= cMillies)
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| 59 | return VERR_TIMEOUT;
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| 60 | rc = RTSemEventWaitNoResume(EventSem, cMillies - (RTMSINTERVAL)u64Elapsed);
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| 61 | } while (rc == VERR_INTERRUPTED);
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| 62 | }
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| 63 | }
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| 64 | return rc;
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| 65 | }
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| 66 | RT_EXPORT_SYMBOL(RTSemEventWait);
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| 67 |
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