VirtualBox

source: vbox/trunk/src/VBox/Runtime/testcase/tstTime.cpp@ 22245

Last change on this file since 22245 was 11822, checked in by vboxsync, 16 years ago

IPRT: RTR3Init cleanup.

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  • Property svn:keywords set to Id
File size: 4.3 KB
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1/* $Id: tstTime.cpp 11822 2008-08-29 14:21:03Z vboxsync $ */
2/** @file
3 * IPRT Testcase - Simple RTTime tests.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27 * Clara, CA 95054 USA or visit http://www.sun.com if you need
28 * additional information or have any questions.
29 */
30
31/*******************************************************************************
32* Header Files *
33*******************************************************************************/
34#include <iprt/time.h>
35#include <iprt/stream.h>
36#include <iprt/initterm.h>
37#include <iprt/thread.h>
38#include <VBox/sup.h>
39
40
41int main()
42{
43 unsigned cErrors = 0;
44 int i;
45 RTR3InitAndSUPLib();
46 RTPrintf("tstTime: TESTING...\n");
47
48 /*
49 * RTNanoTimeTS() shall never return something which
50 * is less or equal to the return of the previous call.
51 */
52
53 RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield();
54 uint64_t u64RTStartTS = RTTimeNanoTS();
55 uint64_t u64OSStartTS = RTTimeSystemNanoTS();
56
57 uint64_t u64Prev = RTTimeNanoTS();
58 for (i = 0; i < 100*_1M; i++)
59 {
60 uint64_t u64 = RTTimeNanoTS();
61 if (u64 <= u64Prev)
62 {
63 /** @todo wrapping detection. */
64 RTPrintf("tstTime: error: i=%#010x u64=%#llx u64Prev=%#llx (1)\n", i, u64, u64Prev);
65 cErrors++;
66 RTThreadYield();
67 u64 = RTTimeNanoTS();
68 }
69 else if (u64 - u64Prev > 1000000000 /* 1sec */)
70 {
71 RTPrintf("tstTime: error: i=%#010x u64=%#llx u64Prev=%#llx delta=%lld\n", i, u64, u64Prev, u64 - u64Prev);
72 cErrors++;
73 RTThreadYield();
74 u64 = RTTimeNanoTS();
75 }
76 if (!(i & (_1M*2 - 1)))
77 {
78 RTPrintf("tstTime: i=%#010x u64=%#llx u64Prev=%#llx delta=%lld\n", i, u64, u64Prev, u64 - u64Prev);
79 RTThreadYield();
80 u64 = RTTimeNanoTS();
81 }
82 u64Prev = u64;
83 }
84
85 RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield();
86 uint64_t u64RTElapsedTS = RTTimeNanoTS();
87 uint64_t u64OSElapsedTS = RTTimeSystemNanoTS();
88 u64RTElapsedTS -= u64RTStartTS;
89 u64OSElapsedTS -= u64OSStartTS;
90 int64_t i64Diff = u64OSElapsedTS >= u64RTElapsedTS ? u64OSElapsedTS - u64RTElapsedTS : u64RTElapsedTS - u64OSElapsedTS;
91 if (i64Diff > (int64_t)(u64OSElapsedTS / 1000))
92 {
93 RTPrintf("tstTime: error: total time differs too much! u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
94 u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
95 cErrors++;
96 }
97 else
98 RTPrintf("tstTime: total time difference: u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
99 u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
100
101 RTPrintf("RTTimeDbgSteps -> %u (%d ppt)\n", RTTimeDbgSteps(), ((uint64_t)RTTimeDbgSteps() * 1000) / i);
102 RTPrintf("RTTimeDbgExpired -> %u (%d ppt)\n", RTTimeDbgExpired(), ((uint64_t)RTTimeDbgExpired() * 1000) / i);
103 RTPrintf("RTTimeDbgBad -> %u (%d ppt)\n", RTTimeDbgBad(), ((uint64_t)RTTimeDbgBad() * 1000) / i);
104 RTPrintf("RTTimeDbgRaces -> %u (%d ppt)\n", RTTimeDbgRaces(), ((uint64_t)RTTimeDbgRaces() * 1000) / i);
105 if (!cErrors)
106 RTPrintf("tstTime: SUCCESS\n");
107 else
108 RTPrintf("tstTime: FAILURE - %d errors\n", cErrors);
109 return !!cErrors;
110}
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