| 1 | /* $Id: semnoint-generic.cpp 1 1970-01-01 00:00:00Z 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 InnoTek Systemberatung 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 | * If you received this file as part of a commercial VirtualBox
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| 18 | * distribution, then only the terms of your commercial VirtualBox
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| 19 | * license agreement apply instead of the previous paragraph.
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| 20 | */
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| 21 |
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| 22 |
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| 23 | /*******************************************************************************
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| 24 | * Header Files *
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| 25 | *******************************************************************************/
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| 26 | #define LOG_GROUP RTLOGGROUP_SEM
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| 27 | #include <iprt/semaphore.h>
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| 28 | #include <iprt/time.h>
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| 29 | #include <iprt/err.h>
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| 30 | #include <iprt/assert.h>
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| 31 |
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| 32 |
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| 33 |
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| 34 | RTDECL(int) RTSemEventWait(RTSEMEVENT EventSem, unsigned cMillies)
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| 35 | {
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| 36 | int rc;
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| 37 | if (cMillies == RT_INDEFINITE_WAIT)
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| 38 | {
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| 39 | do rc = RTSemEventWaitNoResume(EventSem, cMillies);
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| 40 | while (rc == VERR_INTERRUPTED);
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| 41 | }
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| 42 | else
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| 43 | {
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| 44 | const uint64_t u64Start = RTTimeMilliTS();
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| 45 | rc = RTSemEventWaitNoResume(EventSem, cMillies);
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| 46 | if (rc == VERR_INTERRUPTED)
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| 47 | {
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| 48 | do
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| 49 | {
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| 50 | uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
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| 51 | if (u64Elapsed >= cMillies)
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| 52 | return VERR_TIMEOUT;
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| 53 | rc = RTSemEventWaitNoResume(EventSem, cMillies - (unsigned)u64Elapsed);
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| 54 | } while (rc == VERR_INTERRUPTED);
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| 55 | }
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| 56 | }
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| 57 | return rc;
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| 58 | }
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| 59 |
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| 60 |
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| 61 | RTDECL(int) RTSemEventMultiWait(RTSEMEVENTMULTI EventSem, unsigned cMillies)
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| 62 | {
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| 63 | int rc;
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| 64 | if (cMillies == RT_INDEFINITE_WAIT)
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| 65 | {
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| 66 | do rc = RTSemEventMultiWaitNoResume(EventSem, cMillies);
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| 67 | while (rc == VERR_INTERRUPTED);
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| 68 | }
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| 69 | else
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| 70 | {
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| 71 | const uint64_t u64Start = RTTimeMilliTS();
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| 72 | rc = RTSemEventMultiWaitNoResume(EventSem, cMillies);
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| 73 | if (rc == VERR_INTERRUPTED)
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| 74 | {
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| 75 | do
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| 76 | {
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| 77 | uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
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| 78 | if (u64Elapsed >= cMillies)
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| 79 | return VERR_TIMEOUT;
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| 80 | rc = RTSemEventMultiWaitNoResume(EventSem, cMillies - (unsigned)u64Elapsed);
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| 81 | } while (rc == VERR_INTERRUPTED);
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| 82 | }
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| 83 | }
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| 84 | return rc;
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| 85 | }
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| 86 |
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| 87 |
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| 88 | RTDECL(int) RTSemMutexRequest(RTSEMMUTEX Mutex, unsigned cMillies)
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| 89 | {
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| 90 | int rc;
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| 91 | if (cMillies == RT_INDEFINITE_WAIT)
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| 92 | {
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| 93 | do rc = RTSemMutexRequestNoResume(Mutex, cMillies);
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| 94 | while (rc == VERR_INTERRUPTED);
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| 95 | }
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| 96 | else
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| 97 | {
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| 98 | const uint64_t u64Start = RTTimeMilliTS();
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| 99 | rc = RTSemMutexRequestNoResume(Mutex, cMillies);
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| 100 | if (rc == VERR_INTERRUPTED)
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| 101 | {
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| 102 | do
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| 103 | {
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| 104 | uint64_t u64Elapsed = RTTimeMilliTS() - u64Start;
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| 105 | if (u64Elapsed >= cMillies)
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| 106 | return VERR_TIMEOUT;
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| 107 | rc = RTSemMutexRequestNoResume(Mutex, cMillies - (unsigned)u64Elapsed);
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| 108 | } while (rc == VERR_INTERRUPTED);
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| 109 | }
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| 110 | }
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| 111 | return rc;
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| 112 | }
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| 113 |
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