VirtualBox

source: vbox/trunk/src/VBox/Runtime/testcase/tstTime-2.cpp@ 53427

Last change on this file since 53427 was 48935, checked in by vboxsync, 11 years ago

Runtime: Whitespace and svn:keyword cleanups by scm.

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  • Property svn:keywords set to Id Revision
File size: 3.6 KB
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1/* $Id: tstTime-2.cpp 48935 2013-10-07 21:19:37Z 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
38int 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}
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