VirtualBox

source: vbox/trunk/src/VBox/Runtime/testcase/tstTime-4.cpp@ 31632

Last change on this file since 31632 was 28800, checked in by vboxsync, 15 years ago

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1/* $Id: tstTime-4.cpp 28800 2010-04-27 08:22:32Z vboxsync $ */
2/** @file
3 * IPRT Testcase - Simple RTTime vs. RTTimeSystem test.
4 */
5
6/*
7 * Copyright (C) 2006-2007 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
42 RTR3InitAndSUPLib();
43 RTPrintf("tstTime-4: TESTING...\n");
44
45 /*
46 * Check that RTTimeSystemNanoTS doesn't go backwards and
47 * isn't too far from RTTimeNanoTS().
48 */
49 RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield(); /* warmup */
50 const uint64_t SysStartTS = RTTimeSystemNanoTS();
51 const uint64_t GipStartTS = RTTimeNanoTS();
52 uint64_t SysPrevTS, GipPrevTS;
53 do
54 {
55 SysPrevTS = RTTimeSystemNanoTS();
56 GipPrevTS = RTTimeNanoTS();
57 if (SysPrevTS < SysStartTS)
58 {
59 cErrors++;
60 RTPrintf("tstTime-4: Bad Sys time!\n");
61 }
62 if (GipPrevTS < GipStartTS)
63 {
64 cErrors++;
65 RTPrintf("tstTime-4: Bad Gip time!\n");
66 }
67 int64_t Delta = GipPrevTS - SysPrevTS;
68 if (Delta > 0 ? Delta > 100000000 /* 100 ms */ : Delta < -100000000 /* -100 ms */)
69 {
70 cErrors++;
71 RTPrintf("tstTime-4: Delta=%lld!\n", Delta);
72 }
73
74 } while (SysPrevTS - SysStartTS < 2000000000 /* 2s */);
75
76
77 if (!cErrors)
78 RTPrintf("tstTime-4: SUCCESS\n");
79 else
80 RTPrintf("tstTime-4: FAILURE - %d errors\n", cErrors);
81 return !!cErrors;
82}
83
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