| 1 | /* $Id: tstPrfRT.cpp 19308 2009-05-03 19:24:41Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT testcase - profile some of the important 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 Sun Microsystems, Inc.
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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 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 | /*******************************************************************************
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| 32 | * Header Files *
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| 33 | *******************************************************************************/
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| 34 | #include <iprt/initterm.h>
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| 35 | #include <iprt/time.h>
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| 36 | #include <iprt/log.h>
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| 37 | #include <iprt/stream.h>
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| 38 | #include <iprt/thread.h>
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| 39 | #include <iprt/asm.h>
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| 40 |
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| 41 |
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| 42 | void PrintResult(uint64_t u64Ticks, uint64_t u64MaxTicks, uint64_t u64MinTicks, unsigned cTimes, const char *pszOperation)
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| 43 | {
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| 44 | RTPrintf("tstPrfRT: %-32s %5lld / %5lld / %5lld ticks per call (%u calls %lld ticks)\n",
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| 45 | pszOperation, u64MinTicks, u64Ticks / (uint64_t)cTimes, u64MaxTicks, cTimes, u64Ticks);
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| 46 | }
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| 47 |
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| 48 | #define ITERATE(preexpr, expr, postexpr, cIterations) \
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| 49 | for (i = 0, u64TotalTS = 0, u64MinTS = ~0, u64MaxTS = 0; i < (cIterations); i++) \
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| 50 | { \
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| 51 | { preexpr } \
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| 52 | uint64_t u64StartTS = ASMReadTSC(); \
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| 53 | { expr } \
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| 54 | uint64_t u64ElapsedTS = ASMReadTSC() - u64StartTS; \
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| 55 | { postexpr } \
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| 56 | if (u64ElapsedTS > u64MinTS * 32) \
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| 57 | { \
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| 58 | i--; \
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| 59 | continue; \
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| 60 | } \
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| 61 | if (u64ElapsedTS < u64MinTS) \
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| 62 | u64MinTS = u64ElapsedTS; \
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| 63 | if (u64ElapsedTS > u64MaxTS) \
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| 64 | u64MaxTS = u64ElapsedTS; \
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| 65 | u64TotalTS += u64ElapsedTS; \
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| 66 | }
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| 67 |
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| 68 | int main()
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| 69 | {
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| 70 | uint64_t u64TotalTS;
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| 71 | uint64_t u64MinTS;
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| 72 | uint64_t u64MaxTS;
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| 73 | unsigned i;
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| 74 |
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| 75 | RTR3Init();
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| 76 | RTPrintf("tstPrfRT: TESTING...\n");
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| 77 |
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| 78 | /*
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| 79 | * RTTimeNanoTS, RTTimeProgramNanoTS, RTTimeMilliTS, and RTTimeProgramMilliTS.
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| 80 | */
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| 81 | ITERATE(RT_NOTHING, RTTimeNanoTS();, RT_NOTHING, 1000000);
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| 82 | PrintResult(u64TotalTS, u64MaxTS, u64MinTS, i, "RTTimeNanoTS");
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| 83 |
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| 84 | ITERATE(RT_NOTHING, RTTimeProgramNanoTS();, RT_NOTHING, 1000000);
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| 85 | PrintResult(u64TotalTS, u64MaxTS, u64MinTS, i, "RTTimeProgramNanoTS");
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| 86 |
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| 87 | ITERATE(RT_NOTHING, RTTimeMilliTS();, RT_NOTHING, 1000000);
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| 88 | PrintResult(u64TotalTS, u64MaxTS, u64MinTS, i, "RTTimeMilliTS");
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| 89 |
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| 90 | ITERATE(RT_NOTHING, RTTimeProgramMilliTS();, RT_NOTHING, 1000000);
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| 91 | PrintResult(u64TotalTS, u64MaxTS, u64MinTS, i, "RTTimeProgramMilliTS");
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| 92 |
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| 93 | /*
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| 94 | * RTTimeNow
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| 95 | */
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| 96 | RTTIMESPEC Time;
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| 97 | ITERATE(RT_NOTHING, RTTimeNow(&Time);, RT_NOTHING, 1000000);
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| 98 | PrintResult(u64TotalTS, u64MaxTS, u64MinTS, i, "RTTimeNow");
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| 99 |
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| 100 | /*
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| 101 | * RTLogDefaultInstance()
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| 102 | */
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| 103 | ITERATE(RT_NOTHING, RTLogDefaultInstance();, RT_NOTHING, 1000000);
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| 104 | PrintResult(u64TotalTS, u64MaxTS, u64MinTS, i, "RTLogDefaultInstance");
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| 105 |
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| 106 | /*
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| 107 | * RTThreadSelf and RTThreadNativeSelf
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| 108 | */
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| 109 | ITERATE(RT_NOTHING, RTThreadSelf();, RT_NOTHING, 1000000);
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| 110 | PrintResult(u64TotalTS, u64MaxTS, u64MinTS, i, "RTThreadSelf");
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| 111 |
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| 112 | ITERATE(RT_NOTHING, RTThreadNativeSelf();, RT_NOTHING, 1000000);
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| 113 | PrintResult(u64TotalTS, u64MaxTS, u64MinTS, i, "RTThreadNativeSelf");
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| 114 |
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| 115 | RTPrintf("tstPrtRT: DONE\n");
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| 116 | return 0;
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| 117 | }
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