1 | /* $Id: tstTime-4.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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2 | /** @file
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3 | * IPRT Testcase - Simple RTTime vs. RTTimeSystem test.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * The contents of this file may alternatively be used under the terms
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26 | * of the Common Development and Distribution License Version 1.0
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27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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28 | * in the VirtualBox distribution, in which case the provisions of the
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29 | * CDDL are applicable instead of those of the GPL.
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30 | *
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31 | * You may elect to license modified versions of this file under the
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32 | * terms and conditions of either the GPL or the CDDL or both.
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33 | *
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34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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35 | */
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36 |
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37 |
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38 | /*********************************************************************************************************************************
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39 | * Header Files *
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40 | *********************************************************************************************************************************/
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41 | #include <iprt/time.h>
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42 | #include <iprt/stream.h>
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43 | #include <iprt/initterm.h>
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44 | #include <iprt/thread.h>
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45 | #include <VBox/sup.h>
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46 |
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47 |
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48 |
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49 | int main()
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50 | {
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51 | unsigned cErrors = 0;
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52 |
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53 | RTR3InitExeNoArguments(RTR3INIT_FLAGS_SUPLIB);
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54 | RTPrintf("tstTime-4: TESTING...\n");
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55 |
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56 | /*
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57 | * Check that RTTimeSystemNanoTS doesn't go backwards and
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58 | * isn't too far from RTTimeNanoTS().
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59 | */
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60 | RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield(); /* warmup */
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61 | const uint64_t SysStartTS = RTTimeSystemNanoTS();
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62 | const uint64_t GipStartTS = RTTimeNanoTS();
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63 | uint64_t SysPrevTS, GipPrevTS;
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64 | do
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65 | {
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66 | SysPrevTS = RTTimeSystemNanoTS();
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67 | GipPrevTS = RTTimeNanoTS();
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68 | if (SysPrevTS < SysStartTS)
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69 | {
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70 | cErrors++;
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71 | RTPrintf("tstTime-4: Bad Sys time!\n");
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72 | }
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73 | if (GipPrevTS < GipStartTS)
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74 | {
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75 | cErrors++;
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76 | RTPrintf("tstTime-4: Bad Gip time!\n");
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77 | }
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78 | uint64_t Delta = GipPrevTS > SysPrevTS ? GipPrevTS - SysPrevTS :
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79 | SysPrevTS - GipPrevTS;
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80 | if (Delta > 100000000ULL /* 100 ms */ )
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81 | {
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82 | cErrors++;
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83 | RTPrintf("tstTime-4: Delta=%llu (GipPrevTS=%llu, SysPrevTS=%llu)!\n", Delta, GipPrevTS, SysPrevTS);
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84 | }
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85 |
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86 | } while (SysPrevTS - SysStartTS < 2000000000 /* 2s */);
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87 |
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88 |
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89 | if (!cErrors)
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90 | RTPrintf("tstTime-4: SUCCESS\n");
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91 | else
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92 | RTPrintf("tstTime-4: FAILURE - %d errors\n", cErrors);
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93 | return !!cErrors;
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94 | }
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95 |
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