| 1 | /* $Id: tstTime-2.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT Testcase - Simple RTTime test.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2022 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 | /* HACK ALERT! */
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| 49 | #if defined(RT_OS_DARWIN) && defined(RT_ARCH_ARM64)
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| 50 | # undef RTTimeNanoTSWorkerName
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| 51 | # define RTTimeNanoTSWorkerName() "system"
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| 52 | #endif
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| 53 |
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| 54 |
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| 55 | int main()
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| 56 | {
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| 57 | unsigned cErrors = 0;
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| 58 | int i;
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| 59 | RTR3InitExeNoArguments(RTR3INIT_FLAGS_SUPLIB);
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| 60 | RTPrintf("tstTime-2: TESTING...\n");
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| 61 |
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| 62 | /*
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| 63 | * RTNanoTimeTS() shall never return something which
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| 64 | * is less or equal to the return of the previous call.
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| 65 | */
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| 66 |
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| 67 | RTTimeSystemNanoTS(); RTTimeNanoTS(); RTThreadYield();
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| 68 | uint64_t u64RTStartTS = RTTimeNanoTS();
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| 69 | uint64_t u64OSStartTS = RTTimeSystemNanoTS();
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| 70 | #define NUMBER_OF_CALLS (100*_1M)
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| 71 |
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| 72 | for (i = 0; i < NUMBER_OF_CALLS; i++)
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| 73 | RTTimeNanoTS();
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| 74 |
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| 75 | uint64_t u64RTElapsedTS = RTTimeNanoTS();
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| 76 | uint64_t u64OSElapsedTS = RTTimeSystemNanoTS();
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| 77 | u64RTElapsedTS -= u64RTStartTS;
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| 78 | u64OSElapsedTS -= u64OSStartTS;
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| 79 | int64_t i64Diff = u64OSElapsedTS >= u64RTElapsedTS ? u64OSElapsedTS - u64RTElapsedTS : u64RTElapsedTS - u64OSElapsedTS;
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| 80 | if (i64Diff > (int64_t)(u64OSElapsedTS / 1000))
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| 81 | {
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| 82 | RTPrintf("tstTime-2: error: total time differs too much! u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
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| 83 | u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
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| 84 | cErrors++;
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| 85 | }
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| 86 | else
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| 87 | RTPrintf("tstTime-2: total time difference: u64OSElapsedTS=%#llx u64RTElapsedTS=%#llx delta=%lld\n",
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| 88 | u64OSElapsedTS, u64RTElapsedTS, u64OSElapsedTS - u64RTElapsedTS);
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| 89 |
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| 90 | RTPrintf("tstTime-2: %'u calls to RTTimeNanoTS in %'lluns -> %'llu calls/sec (%s)\n",
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| 91 | NUMBER_OF_CALLS, u64RTElapsedTS, (uint64_t)(NUMBER_OF_CALLS / ((double)u64RTElapsedTS / RT_NS_1SEC)), RTTimeNanoTSWorkerName());
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| 92 | #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) /** @todo This isn't really x86 or AMD64 specific... */
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| 93 | RTPrintf("tstTime-2: RTTimeDbgSteps -> %u (%d ppt)\n", RTTimeDbgSteps(), ((uint64_t)RTTimeDbgSteps() * 1000) / NUMBER_OF_CALLS);
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| 94 | RTPrintf("tstTime-2: RTTimeDbgExpired -> %u (%d ppt)\n", RTTimeDbgExpired(), ((uint64_t)RTTimeDbgExpired() * 1000) / NUMBER_OF_CALLS);
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| 95 | RTPrintf("tstTime-2: RTTimeDbgBad -> %u (%d ppt)\n", RTTimeDbgBad(), ((uint64_t)RTTimeDbgBad() * 1000) / NUMBER_OF_CALLS);
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| 96 | RTPrintf("tstTime-2: RTTimeDbgRaces -> %u (%d ppt)\n", RTTimeDbgRaces(), ((uint64_t)RTTimeDbgRaces() * 1000) / NUMBER_OF_CALLS);
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| 97 | #endif
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| 98 |
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| 99 | if (!cErrors)
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| 100 | RTPrintf("tstTime-2: SUCCESS\n");
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| 101 | else
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| 102 | RTPrintf("tstTime-2: FAILURE - %d errors\n", cErrors);
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| 103 | return !!cErrors;
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| 104 | }
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