| 1 | /* $Id: semnoint-generic.cpp 4071 2007-08-07 17:07:59Z vboxsync $ */
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| 2 | /** @file
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| 3 | * innotek Portable Runtime - Generic Non-Interruptable Wait and Request Functions.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 innotek GmbH
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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 as published by the Free Software Foundation,
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| 13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
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| 14 | * distribution. VirtualBox OSE is distributed in the hope that it will
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| 15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 |
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| 19 | /*******************************************************************************
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| 20 | * Header Files *
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| 21 | *******************************************************************************/
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| 22 | #define LOG_GROUP RTLOGGROUP_SEM
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| 23 | #include <iprt/semaphore.h>
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| 24 | #include <iprt/time.h>
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| 25 | #include <iprt/err.h>
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| 26 | #include <iprt/assert.h>
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| 27 |
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| 28 |
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| 29 |
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| 30 | RTDECL(int) RTSemEventWait(RTSEMEVENT EventSem, unsigned cMillies)
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| 31 | {
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| 32 | int rc;
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| 33 | if (cMillies == RT_INDEFINITE_WAIT)
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| 34 | {
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| 35 | do rc = RTSemEventWaitNoResume(EventSem, cMillies);
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| 36 | while (rc == VERR_INTERRUPTED);
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| 37 | }
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| 38 | else
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| 39 | {
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| 40 | const uint64_t u64Start = RTTimeMilliTS();
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| 41 | rc = RTSemEventWaitNoResume(EventSem, cMillies);
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| 42 | if (rc == VERR_INTERRUPTED)
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| 43 | {
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| 44 | do
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| 45 | {
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| 46 | uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
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| 47 | if (u64Elapsed >= cMillies)
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| 48 | return VERR_TIMEOUT;
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| 49 | rc = RTSemEventWaitNoResume(EventSem, cMillies - (unsigned)u64Elapsed);
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| 50 | } while (rc == VERR_INTERRUPTED);
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| 51 | }
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| 52 | }
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| 53 | return rc;
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| 54 | }
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| 55 |
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| 56 |
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| 57 | RTDECL(int) RTSemEventMultiWait(RTSEMEVENTMULTI EventSem, unsigned cMillies)
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| 58 | {
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| 59 | int rc;
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| 60 | if (cMillies == RT_INDEFINITE_WAIT)
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| 61 | {
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| 62 | do rc = RTSemEventMultiWaitNoResume(EventSem, cMillies);
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| 63 | while (rc == VERR_INTERRUPTED);
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| 64 | }
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| 65 | else
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| 66 | {
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| 67 | const uint64_t u64Start = RTTimeMilliTS();
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| 68 | rc = RTSemEventMultiWaitNoResume(EventSem, cMillies);
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| 69 | if (rc == VERR_INTERRUPTED)
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| 70 | {
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| 71 | do
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| 72 | {
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| 73 | uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
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| 74 | if (u64Elapsed >= cMillies)
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| 75 | return VERR_TIMEOUT;
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| 76 | rc = RTSemEventMultiWaitNoResume(EventSem, cMillies - (unsigned)u64Elapsed);
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| 77 | } while (rc == VERR_INTERRUPTED);
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| 78 | }
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| 79 | }
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| 80 | return rc;
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| 81 | }
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| 82 |
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| 83 |
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| 84 | RTDECL(int) RTSemMutexRequest(RTSEMMUTEX Mutex, unsigned cMillies)
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| 85 | {
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| 86 | int rc;
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| 87 | if (cMillies == RT_INDEFINITE_WAIT)
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| 88 | {
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| 89 | do rc = RTSemMutexRequestNoResume(Mutex, cMillies);
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| 90 | while (rc == VERR_INTERRUPTED);
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| 91 | }
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| 92 | else
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| 93 | {
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| 94 | const uint64_t u64Start = RTTimeMilliTS();
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| 95 | rc = RTSemMutexRequestNoResume(Mutex, cMillies);
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| 96 | if (rc == VERR_INTERRUPTED)
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| 97 | {
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| 98 | do
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| 99 | {
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| 100 | uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
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| 101 | if (u64Elapsed >= cMillies)
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| 102 | return VERR_TIMEOUT;
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| 103 | rc = RTSemMutexRequestNoResume(Mutex, cMillies - (unsigned)u64Elapsed);
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| 104 | } while (rc == VERR_INTERRUPTED);
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| 105 | }
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| 106 | }
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| 107 | return rc;
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| 108 | }
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| 109 |
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