| 1 | /* $Id: tstSemMutex.cpp 6739 2008-02-01 21:48:10Z vboxsync $ */
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| 2 | /** @file
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| 3 | * innotek Portable Runtime Testcase - Simple Semaphore Smoke Test.
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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 (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 | * Header Files *
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| 29 | *******************************************************************************/
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| 30 | #include <iprt/semaphore.h>
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| 31 | #include <iprt/string.h>
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| 32 | #include <iprt/thread.h>
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| 33 | #include <iprt/stream.h>
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| 34 | #include <iprt/initterm.h>
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| 35 | #include <iprt/asm.h>
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| 36 |
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| 37 | #include <stdio.h>
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| 38 | #include <stdlib.h>
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| 39 |
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| 40 | #define SECONDS 10
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| 41 |
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| 42 | static RTSEMMUTEX g_mutex;
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| 43 | static uint64_t g_au64[10];
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| 44 | static bool g_fTerminate;
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| 45 | static uint32_t g_cbConcurrent;
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| 46 |
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| 47 |
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| 48 | int ThreadTest(RTTHREAD ThreadSelf, void *pvUser)
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| 49 | {
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| 50 | uint64_t *pu64 = (uint64_t*) pvUser;
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| 51 | for (;;)
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| 52 | {
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| 53 | int rc = RTSemMutexRequestNoResume(g_mutex, RT_INDEFINITE_WAIT);
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| 54 | if (RT_FAILURE(rc))
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| 55 | {
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| 56 | RTPrintf("%x: RTSemMutexRequestNoResume failed with %Vrc\n", rc);
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| 57 | break;
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| 58 | }
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| 59 | if (ASMAtomicIncU32(&g_cbConcurrent) != 1)
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| 60 | {
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| 61 | RTPrintf("g_cbConcurrent=%d after request!\n", g_cbConcurrent);
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| 62 | break;
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| 63 | }
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| 64 |
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| 65 | /*
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| 66 | * Check for fairness: The values of the threads should not differ too much
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| 67 | */
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| 68 | (*pu64)++;
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| 69 |
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| 70 | /*
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| 71 | * Check for correctness: Give other threads a chance. If the implementation is
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| 72 | * correct, no other thread will be able to enter this lock now.
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| 73 | */
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| 74 | RTThreadYield();
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| 75 | if (ASMAtomicDecU32(&g_cbConcurrent) != 0)
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| 76 | {
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| 77 | RTPrintf("g_cbConcurrent=%d before release!\n", g_cbConcurrent);
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| 78 | break;
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| 79 | }
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| 80 | rc = RTSemMutexRelease(g_mutex);
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| 81 | if (RT_FAILURE(rc))
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| 82 | {
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| 83 | RTPrintf("%x: RTSemMutexRelease failed with %Vrc\n", rc);
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| 84 | break;
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| 85 | }
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| 86 | if (g_fTerminate)
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| 87 | break;
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| 88 | }
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| 89 | RTPrintf("Thread %08x exited with %lld\n", ThreadSelf, *pu64);
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| 90 | return VINF_SUCCESS;
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| 91 | }
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| 92 |
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| 93 | int main()
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| 94 | {
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| 95 | int rc;
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| 96 | unsigned u;
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| 97 | RTTHREAD Thread[ELEMENTS(g_au64)];
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| 98 |
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| 99 | rc = RTR3Init(false, 0);
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| 100 | if (RT_FAILURE(rc))
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| 101 | {
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| 102 | RTPrintf("RTR3Init failed (rc=%Vrc)\n", rc);
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| 103 | exit(1);
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| 104 | }
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| 105 | rc = RTSemMutexCreate(&g_mutex);
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| 106 | if (RT_FAILURE(rc))
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| 107 | {
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| 108 | RTPrintf("RTSemMutexCreate failed (rc=%Vrc)\n", rc);
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| 109 | exit(1);
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| 110 | }
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| 111 | for (u=0; u<ELEMENTS(g_au64); u++)
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| 112 | {
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| 113 | rc = RTThreadCreate(&Thread[u], ThreadTest, &g_au64[u], 0, RTTHREADTYPE_DEFAULT, 0, "test");
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| 114 | if (RT_FAILURE(rc))
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| 115 | {
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| 116 | RTPrintf("RTThreadCreate failed for thread %u (rc=%Vrc)\n", u, rc);
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| 117 | exit(1);
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| 118 | }
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| 119 | }
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| 120 |
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| 121 | RTPrintf("%u Threads created. Waiting for %u seconds ...\n", ELEMENTS(g_au64), SECONDS);
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| 122 | RTThreadSleep(SECONDS * 1000);
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| 123 | g_fTerminate = true;
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| 124 | RTThreadSleep(100);
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| 125 | RTSemMutexDestroy(g_mutex);
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| 126 | RTThreadSleep(100);
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| 127 |
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| 128 | for (u=1; u<ELEMENTS(g_au64); u++)
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| 129 | g_au64[0] += g_au64[u];
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| 130 |
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| 131 | RTPrintf("Done. In total: %lld\n", g_au64[0]);
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| 132 | }
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