VirtualBox

source: vbox/trunk/src/VBox/Runtime/testcase/tstRTTime.cpp@ 94018

Last change on this file since 94018 was 93115, checked in by vboxsync, 3 years ago

scm --update-copyright-year

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id Revision
File size: 5.3 KB
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1/* $Id: tstRTTime.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2/** @file
3 * IPRT Testcase - Simple RTTime tests (requires GIP).
4 */
5
6/*
7 * Copyright (C) 2006-2022 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/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include <iprt/time.h>
32
33#include <iprt/errcore.h>
34#include <iprt/initterm.h>
35#include <iprt/message.h>
36#include <iprt/test.h>
37#include <iprt/thread.h>
38
39int main()
40{
41 /*
42 * Init.
43 */
44 RTTEST hTest;
45 RTEXITCODE rcExit = RTTestInitExAndCreate(0, NULL, RTR3INIT_FLAGS_SUPLIB, "tstRTTime", &hTest);
46 if (rcExit != RTEXITCODE_SUCCESS)
47 return rcExit;
48 RTTestBanner(hTest);
49
50 /*
51 * RTNanoTimeTS() shall never return something which
52 * is less or equal to the return of the previous call.
53 */
54
55 RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield();
56 uint64_t u64RTStartTS = RTTimeNanoTS();
57 uint64_t u64OSStartTS = RTTimeSystemNanoTS();
58
59 uint32_t i;
60 uint64_t u64Prev = RTTimeNanoTS();
61 for (i = 0; i < 100*_1M; i++)
62 {
63 uint64_t u64 = RTTimeNanoTS();
64 if (u64 <= u64Prev)
65 {
66 /** @todo wrapping detection. */
67 RTTestFailed(hTest, "i=%#010x u64=%#llx u64Prev=%#llx (1)\n", i, u64, u64Prev);
68 if (RTTestErrorCount(hTest) >= 256)
69 break;
70 RTThreadYield();
71 u64 = RTTimeNanoTS();
72 }
73 else if (u64 - u64Prev > 1000000000 /* 1sec */)
74 {
75 RTTestFailed(hTest, "i=%#010x u64=%#llx u64Prev=%#llx delta=%lld\n", i, u64, u64Prev, u64 - u64Prev);
76 if (RTTestErrorCount(hTest) >= 256)
77 break;
78 RTThreadYield();
79 u64 = RTTimeNanoTS();
80 }
81 if (!(i & (_1M*2 - 1)))
82 {
83 RTTestPrintf(hTest, RTTESTLVL_INFO, "i=%#010x u64=%#llx u64Prev=%#llx delta=%lld\n", i, u64, u64Prev, u64 - u64Prev);
84 RTThreadYield();
85 u64 = RTTimeNanoTS();
86 }
87 u64Prev = u64;
88 }
89
90 RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield();
91 uint64_t u64RTElapsedTS = RTTimeNanoTS();
92 uint64_t u64OSElapsedTS = RTTimeSystemNanoTS();
93 u64RTElapsedTS -= u64RTStartTS;
94 u64OSElapsedTS -= u64OSStartTS;
95 int64_t i64Diff = u64OSElapsedTS >= u64RTElapsedTS ? u64OSElapsedTS - u64RTElapsedTS : u64RTElapsedTS - u64OSElapsedTS;
96 if (i64Diff > (int64_t)(u64OSElapsedTS / 1000))
97 RTTestFailed(hTest, "total time differs too much! u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
98 u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
99 else
100 {
101 if (u64OSElapsedTS >= u64RTElapsedTS)
102 RTTestValue(hTest, "Total time delta", u64OSElapsedTS - u64RTElapsedTS, RTTESTUNIT_NS);
103 else
104 RTTestValue(hTest, "Total time delta", u64RTElapsedTS - u64OSElapsedTS, RTTESTUNIT_NS);
105 RTTestPrintf(hTest, RTTESTLVL_INFO, "total time difference: u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
106 u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
107 }
108
109#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) /** @todo This isn't really x86 or AMD64 specific... */
110 RTTestValue(hTest, "RTTimeDbgSteps", RTTimeDbgSteps(), RTTESTUNIT_OCCURRENCES);
111 RTTestValue(hTest, "RTTimeDbgSteps pp", ((uint64_t)RTTimeDbgSteps() * 1000) / i, RTTESTUNIT_PP1K);
112 RTTestValue(hTest, "RTTimeDbgExpired", RTTimeDbgExpired(), RTTESTUNIT_OCCURRENCES);
113 RTTestValue(hTest, "RTTimeDbgExpired pp", ((uint64_t)RTTimeDbgExpired() * 1000) / i, RTTESTUNIT_PP1K);
114 RTTestValue(hTest, "RTTimeDbgBad", RTTimeDbgBad(), RTTESTUNIT_OCCURRENCES);
115 RTTestValue(hTest, "RTTimeDbgBad pp", ((uint64_t)RTTimeDbgBad() * 1000) / i, RTTESTUNIT_PP1K);
116 RTTestValue(hTest, "RTTimeDbgRaces", RTTimeDbgRaces(), RTTESTUNIT_OCCURRENCES);
117 RTTestValue(hTest, "RTTimeDbgRaces pp", ((uint64_t)RTTimeDbgRaces() * 1000) / i, RTTESTUNIT_PP1K);
118#endif
119
120 return RTTestSummaryAndDestroy(hTest);
121}
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