| 1 | /* $Id: tstTime-2.cpp 62477 2016-07-22 18:27:37Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT Testcase - Simple RTTime test.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2016 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 | #include <iprt/time.h>
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| 32 | #include <iprt/stream.h>
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| 33 | #include <iprt/initterm.h>
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| 34 | #include <iprt/thread.h>
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| 35 | #include <VBox/sup.h>
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| 36 |
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| 37 |
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| 38 |
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| 39 | int main()
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| 40 | {
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| 41 | unsigned cErrors = 0;
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| 42 | int i;
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| 43 | RTR3InitExeNoArguments(RTR3INIT_FLAGS_SUPLIB);
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| 44 | RTPrintf("tstTime-2: TESTING...\n");
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| 45 |
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| 46 | /*
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| 47 | * RTNanoTimeTS() shall never return something which
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| 48 | * is less or equal to the return of the previous call.
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| 49 | */
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| 50 |
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| 51 | RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield();
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| 52 | uint64_t u64RTStartTS = RTTimeNanoTS();
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| 53 | uint64_t u64OSStartTS = RTTimeSystemNanoTS();
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| 54 | #define NUMBER_OF_CALLS (100*_1M)
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| 55 |
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| 56 | for (i = 0; i < NUMBER_OF_CALLS; i++)
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| 57 | RTTimeNanoTS();
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| 58 |
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| 59 | uint64_t u64RTElapsedTS = RTTimeNanoTS();
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| 60 | uint64_t u64OSElapsedTS = RTTimeSystemNanoTS();
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| 61 | u64RTElapsedTS -= u64RTStartTS;
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| 62 | u64OSElapsedTS -= u64OSStartTS;
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| 63 | int64_t i64Diff = u64OSElapsedTS >= u64RTElapsedTS ? u64OSElapsedTS - u64RTElapsedTS : u64RTElapsedTS - u64OSElapsedTS;
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| 64 | if (i64Diff > (int64_t)(u64OSElapsedTS / 1000))
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| 65 | {
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| 66 | RTPrintf("tstTime-2: error: total time differs too much! u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
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| 67 | u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
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| 68 | cErrors++;
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| 69 | }
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| 70 | else
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| 71 | RTPrintf("tstTime-2: total time difference: u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
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| 72 | u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
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| 73 |
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| 74 | RTPrintf("tstTime-2: %u calls to RTTimeNanoTS\n", NUMBER_OF_CALLS);
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| 75 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) /** @todo This isn't really x86 or AMD64 specific... */
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| 76 | RTPrintf("tstTime-2: RTTimeDbgSteps -> %u (%d ppt)\n", RTTimeDbgSteps(), ((uint64_t)RTTimeDbgSteps() * 1000) / NUMBER_OF_CALLS);
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| 77 | RTPrintf("tstTime-2: RTTimeDbgExpired -> %u (%d ppt)\n", RTTimeDbgExpired(), ((uint64_t)RTTimeDbgExpired() * 1000) / NUMBER_OF_CALLS);
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| 78 | RTPrintf("tstTime-2: RTTimeDbgBad -> %u (%d ppt)\n", RTTimeDbgBad(), ((uint64_t)RTTimeDbgBad() * 1000) / NUMBER_OF_CALLS);
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| 79 | RTPrintf("tstTime-2: RTTimeDbgRaces -> %u (%d ppt)\n", RTTimeDbgRaces(), ((uint64_t)RTTimeDbgRaces() * 1000) / NUMBER_OF_CALLS);
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| 80 | #endif
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| 81 |
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| 82 | if (!cErrors)
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| 83 | RTPrintf("tstTime-2: SUCCESS\n");
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| 84 | else
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| 85 | RTPrintf("tstTime-2: FAILURE - %d errors\n", cErrors);
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| 86 | return !!cErrors;
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| 87 | }
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