| 1 | /* $Id: tstTime-2.cpp 44528 2013-02-04 14:27:54Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT Testcase - Simple RTTime test.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2011 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 | /*******************************************************************************
|
|---|
| 28 | * Header Files *
|
|---|
| 29 | *******************************************************************************/
|
|---|
| 30 | #include <iprt/time.h>
|
|---|
| 31 | #include <iprt/stream.h>
|
|---|
| 32 | #include <iprt/initterm.h>
|
|---|
| 33 | #include <iprt/thread.h>
|
|---|
| 34 | #include <VBox/sup.h>
|
|---|
| 35 |
|
|---|
| 36 |
|
|---|
| 37 |
|
|---|
| 38 | int main()
|
|---|
| 39 | {
|
|---|
| 40 | unsigned cErrors = 0;
|
|---|
| 41 | int i;
|
|---|
| 42 | RTR3InitExeNoArguments(RTR3INIT_FLAGS_SUPLIB);
|
|---|
| 43 | RTPrintf("tstTime-2: TESTING...\n");
|
|---|
| 44 |
|
|---|
| 45 | /*
|
|---|
| 46 | * RTNanoTimeTS() shall never return something which
|
|---|
| 47 | * is less or equal to the return of the previous call.
|
|---|
| 48 | */
|
|---|
| 49 |
|
|---|
| 50 | RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield();
|
|---|
| 51 | uint64_t u64RTStartTS = RTTimeNanoTS();
|
|---|
| 52 | uint64_t u64OSStartTS = RTTimeSystemNanoTS();
|
|---|
| 53 | #define NUMBER_OF_CALLS (100*_1M)
|
|---|
| 54 |
|
|---|
| 55 | for (i = 0; i < NUMBER_OF_CALLS; i++)
|
|---|
| 56 | RTTimeNanoTS();
|
|---|
| 57 |
|
|---|
| 58 | uint64_t u64RTElapsedTS = RTTimeNanoTS();
|
|---|
| 59 | uint64_t u64OSElapsedTS = RTTimeSystemNanoTS();
|
|---|
| 60 | u64RTElapsedTS -= u64RTStartTS;
|
|---|
| 61 | u64OSElapsedTS -= u64OSStartTS;
|
|---|
| 62 | int64_t i64Diff = u64OSElapsedTS >= u64RTElapsedTS ? u64OSElapsedTS - u64RTElapsedTS : u64RTElapsedTS - u64OSElapsedTS;
|
|---|
| 63 | if (i64Diff > (int64_t)(u64OSElapsedTS / 1000))
|
|---|
| 64 | {
|
|---|
| 65 | RTPrintf("tstTime-2: error: total time differs too much! u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
|
|---|
| 66 | u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
|
|---|
| 67 | cErrors++;
|
|---|
| 68 | }
|
|---|
| 69 | else
|
|---|
| 70 | RTPrintf("tstTime-2: total time difference: u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
|
|---|
| 71 | u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
|
|---|
| 72 |
|
|---|
| 73 | RTPrintf("tstTime-2: %u calls to RTTimeNanoTS\n", NUMBER_OF_CALLS);
|
|---|
| 74 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) /** @todo This isn't really x86 or AMD64 specific... */
|
|---|
| 75 | RTPrintf("tstTime-2: RTTimeDbgSteps -> %u (%d ppt)\n", RTTimeDbgSteps(), ((uint64_t)RTTimeDbgSteps() * 1000) / NUMBER_OF_CALLS);
|
|---|
| 76 | RTPrintf("tstTime-2: RTTimeDbgExpired -> %u (%d ppt)\n", RTTimeDbgExpired(), ((uint64_t)RTTimeDbgExpired() * 1000) / NUMBER_OF_CALLS);
|
|---|
| 77 | RTPrintf("tstTime-2: RTTimeDbgBad -> %u (%d ppt)\n", RTTimeDbgBad(), ((uint64_t)RTTimeDbgBad() * 1000) / NUMBER_OF_CALLS);
|
|---|
| 78 | RTPrintf("tstTime-2: RTTimeDbgRaces -> %u (%d ppt)\n", RTTimeDbgRaces(), ((uint64_t)RTTimeDbgRaces() * 1000) / NUMBER_OF_CALLS);
|
|---|
| 79 | #endif
|
|---|
| 80 |
|
|---|
| 81 | if (!cErrors)
|
|---|
| 82 | RTPrintf("tstTime-2: SUCCESS\n");
|
|---|
| 83 | else
|
|---|
| 84 | RTPrintf("tstTime-2: FAILURE - %d errors\n", cErrors);
|
|---|
| 85 | return !!cErrors;
|
|---|
| 86 | }
|
|---|
