| 1 | /* $Id: tstTime.cpp 2981 2007-06-01 16:01:28Z vboxsync $ */
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| 2 | /** @file
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| 3 | * innotek Portable Runtime Testcase - Simple RTTime tests.
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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 | * 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 | * Header Files *
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| 24 | *******************************************************************************/
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| 25 | #ifdef __WIN__
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| 26 | # include <Windows.h>
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| 27 |
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| 28 | #elif defined __L4__
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| 29 |
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| 30 | #else /* posix */
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| 31 | # include <sys/time.h>
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| 32 | #endif
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| 33 |
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| 34 | #include <iprt/time.h>
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| 35 | #include <iprt/stream.h>
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| 36 | #include <iprt/runtime.h>
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| 37 | #include <iprt/thread.h>
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| 38 | #include <VBox/sup.h>
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| 39 |
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| 40 | DECLINLINE(uint64_t) OSNanoTS(void)
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| 41 | {
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| 42 | #ifdef __WIN__
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| 43 | uint64_t u64; /* manual say larger integer, should be safe to assume it's the same. */
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| 44 | GetSystemTimeAsFileTime((LPFILETIME)&u64);
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| 45 | return u64 * 100;
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| 46 |
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| 47 | #elif defined __L4__
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| 48 | /** @todo fix a different timesource on l4. */
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| 49 | return RTTimeNanoTS();
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| 50 |
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| 51 | #else /* posix */
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| 52 |
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| 53 | struct timeval tv;
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| 54 | gettimeofday(&tv, NULL);
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| 55 | return (uint64_t)tv.tv_sec * (uint64_t)(1000 * 1000 * 1000)
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| 56 | + (uint64_t)(tv.tv_usec * 1000);
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| 57 | #endif
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| 58 | }
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| 59 |
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| 60 |
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| 61 |
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| 62 | int main()
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| 63 | {
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| 64 | unsigned cErrors = 0;
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| 65 | int i;
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| 66 | RTR3Init();
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| 67 | SUPInit();
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| 68 | RTPrintf("tstTime: TESTING...\n");
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| 69 |
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| 70 | /*
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| 71 | * RTNanoTimeTS() shall never return something which
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| 72 | * is less or equal to the return of the previous call.
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| 73 | */
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| 74 |
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| 75 | OSNanoTS(); RTTimeNanoTS(); RTThreadYield();
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| 76 | uint64_t u64RTStartTS = RTTimeNanoTS();
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| 77 | uint64_t u64OSStartTS = OSNanoTS();
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| 78 |
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| 79 | uint64_t u64Prev = RTTimeNanoTS();
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| 80 | for (i = 0; i < 100*_1M; i++)
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| 81 | {
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| 82 | uint64_t u64 = RTTimeNanoTS();
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| 83 | if (u64 <= u64Prev)
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| 84 | {
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| 85 | /** @todo wrapping detection. */
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| 86 | RTPrintf("tstTime: error: i=%#010x u64=%#llx u64Prev=%#llx (1)\n", i, u64, u64Prev);
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| 87 | cErrors++;
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| 88 | RTThreadYield();
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| 89 | u64 = RTTimeNanoTS();
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| 90 | }
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| 91 | else if (u64 - u64Prev > 1000000000 /* 1sec */)
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| 92 | {
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| 93 | RTPrintf("tstTime: error: i=%#010x u64=%#llx u64Prev=%#llx delta=%lld\n", i, u64, u64Prev, u64 - u64Prev);
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| 94 | cErrors++;
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| 95 | RTThreadYield();
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| 96 | u64 = RTTimeNanoTS();
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| 97 | }
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| 98 | if (!(i & (_1M*2 - 1)))
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| 99 | {
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| 100 | RTPrintf("tstTime: i=%#010x u64=%#llx u64Prev=%#llx delta=%lld\n", i, u64, u64Prev, u64 - u64Prev);
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| 101 | RTThreadYield();
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| 102 | u64 = RTTimeNanoTS();
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| 103 | }
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| 104 | u64Prev = u64;
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| 105 | }
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| 106 |
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| 107 | OSNanoTS(); RTTimeNanoTS(); RTThreadYield();
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| 108 | uint64_t u64RTElapsedTS = RTTimeNanoTS();
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| 109 | uint64_t u64OSElapsedTS = OSNanoTS();
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| 110 | u64RTElapsedTS -= u64RTStartTS;
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| 111 | u64OSElapsedTS -= u64OSStartTS;
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| 112 | int64_t i64Diff = u64OSElapsedTS >= u64RTElapsedTS ? u64OSElapsedTS - u64RTElapsedTS : u64RTElapsedTS - u64OSElapsedTS;
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| 113 | if (i64Diff > (int64_t)(u64OSElapsedTS / 1000))
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| 114 | {
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| 115 | RTPrintf("tstTime: error: total time differs too much! u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
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| 116 | u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
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| 117 | cErrors++;
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| 118 | }
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| 119 | else
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| 120 | RTPrintf("tstTime: total time difference: u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
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| 121 | u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
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| 122 |
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| 123 | RTPrintf("RTTime1nsSteps -> %u (%d ppt)\n", RTTime1nsSteps(), (RTTime1nsSteps() * 1000) / i);
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| 124 | if (!cErrors)
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| 125 | RTPrintf("tstTime: SUCCESS\n");
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| 126 | else
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| 127 | RTPrintf("tstTime: FAILURE - %d errors\n", cErrors);
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| 128 | return !!cErrors;
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| 129 | }
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