| 1 | /* $Id: tstRTR0ThreadPreemptionDriver.cpp 62721 2016-07-29 22:31:28Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT R0 Testcase - Thread Preemption, driver program.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2009-2016 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #include <iprt/initterm.h>
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| 32 |
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| 33 | #include <iprt/asm.h>
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| 34 | #include <iprt/cpuset.h>
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| 35 | #include <iprt/err.h>
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| 36 | #include <iprt/path.h>
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| 37 | #include <iprt/param.h>
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| 38 | #include <iprt/stream.h>
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| 39 | #include <iprt/string.h>
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| 40 | #include <iprt/test.h>
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| 41 | #include <iprt/time.h>
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| 42 | #include <iprt/thread.h>
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| 43 | #ifdef VBOX
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| 44 | # include <VBox/sup.h>
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| 45 | # include "tstRTR0ThreadPreemption.h"
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| 46 | #endif
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| 47 |
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| 48 |
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| 49 | /*********************************************************************************************************************************
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| 50 | * Global Variables *
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| 51 | *********************************************************************************************************************************/
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| 52 | static bool volatile g_fTerminate = false;
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| 53 |
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| 54 |
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| 55 | /**
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| 56 | * Try make sure all online CPUs will be engaged.
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| 57 | */
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| 58 | static DECLCALLBACK(int) MyThreadProc(RTTHREAD hSelf, void *pvCpuIdx)
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| 59 | {
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| 60 | RT_NOREF1(hSelf);
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| 61 | RTCPUSET Affinity;
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| 62 | RTCpuSetEmpty(&Affinity);
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| 63 | RTCpuSetAddByIndex(&Affinity, (intptr_t)pvCpuIdx);
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| 64 | RTThreadSetAffinity(&Affinity); /* ignore return code as it's not supported on all hosts. */
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| 65 |
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| 66 | while (!g_fTerminate)
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| 67 | {
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| 68 | uint64_t tsStart = RTTimeMilliTS();
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| 69 | do
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| 70 | {
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| 71 | ASMNopPause();
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| 72 | } while (RTTimeMilliTS() - tsStart < 8);
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| 73 | RTThreadSleep(4);
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| 74 | }
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| 75 |
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| 76 | return VINF_SUCCESS;
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| 77 | }
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| 78 |
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| 79 |
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| 80 | /**
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| 81 | * Entry point.
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| 82 | */
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| 83 | extern "C" DECLEXPORT(int) TrustedMain(int argc, char **argv, char **envp)
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| 84 | {
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| 85 | RT_NOREF3(argc, argv, envp);
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| 86 | #ifndef VBOX
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| 87 | RTPrintf("tstSup: SKIPPED\n");
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| 88 | return 0;
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| 89 | #else
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| 90 | /*
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| 91 | * Init.
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| 92 | */
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| 93 | RTTEST hTest;
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| 94 | int rc = RTTestInitAndCreate("tstRTR0ThreadPreemption", &hTest);
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| 95 | if (rc)
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| 96 | return rc;
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| 97 | RTTestBanner(hTest);
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| 98 |
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| 99 | PSUPDRVSESSION pSession;
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| 100 | rc = SUPR3Init(&pSession);
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| 101 | if (RT_FAILURE(rc))
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| 102 | {
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| 103 | RTTestFailed(hTest, "SUPR3Init failed with rc=%Rrc\n", rc);
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| 104 | return RTTestSummaryAndDestroy(hTest);
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| 105 | }
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| 106 |
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| 107 | char szPath[RTPATH_MAX];
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| 108 | rc = RTPathExecDir(szPath, sizeof(szPath));
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| 109 | if (RT_SUCCESS(rc))
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| 110 | rc = RTPathAppend(szPath, sizeof(szPath), "tstRTR0ThreadPreemption.r0");
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| 111 | if (RT_FAILURE(rc))
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| 112 | {
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| 113 | RTTestFailed(hTest, "Failed constructing .r0 filename (rc=%Rrc)", rc);
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| 114 | return RTTestSummaryAndDestroy(hTest);
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| 115 | }
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| 116 |
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| 117 | void *pvImageBase;
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| 118 | rc = SUPR3LoadServiceModule(szPath, "tstRTR0ThreadPreemption",
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| 119 | "TSTRTR0ThreadPreemptionSrvReqHandler",
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| 120 | &pvImageBase);
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| 121 | if (RT_FAILURE(rc))
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| 122 | {
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| 123 | RTTestFailed(hTest, "SUPR3LoadServiceModule(%s,,,) failed with rc=%Rrc\n", szPath, rc);
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| 124 | return RTTestSummaryAndDestroy(hTest);
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| 125 | }
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| 126 |
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| 127 | /* test request */
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| 128 | struct
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| 129 | {
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| 130 | SUPR0SERVICEREQHDR Hdr;
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| 131 | char szMsg[256];
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| 132 | } Req;
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| 133 |
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| 134 | /*
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| 135 | * Sanity checks.
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| 136 | */
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| 137 | RTTestSub(hTest, "Sanity");
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| 138 | Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
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| 139 | Req.Hdr.cbReq = sizeof(Req);
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| 140 | Req.szMsg[0] = '\0';
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| 141 | RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
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| 142 | TSTRTR0THREADPREEMPTION_SANITY_OK, 0, &Req.Hdr), VINF_SUCCESS);
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| 143 | if (RT_FAILURE(rc))
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| 144 | return RTTestSummaryAndDestroy(hTest);
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| 145 | RTTESTI_CHECK_MSG(Req.szMsg[0] == '\0', ("%s", Req.szMsg));
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| 146 | if (Req.szMsg[0] != '\0')
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| 147 | return RTTestSummaryAndDestroy(hTest);
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| 148 |
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| 149 | Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
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| 150 | Req.Hdr.cbReq = sizeof(Req);
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| 151 | Req.szMsg[0] = '\0';
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| 152 | RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
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| 153 | TSTRTR0THREADPREEMPTION_SANITY_FAILURE, 0, &Req.Hdr), VINF_SUCCESS);
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| 154 | if (RT_FAILURE(rc))
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| 155 | return RTTestSummaryAndDestroy(hTest);
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| 156 | RTTESTI_CHECK_MSG(!strncmp(Req.szMsg, RT_STR_TUPLE("!42failure42")), ("%s", Req.szMsg));
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| 157 | if (strncmp(Req.szMsg, RT_STR_TUPLE("!42failure42")))
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| 158 | return RTTestSummaryAndDestroy(hTest);
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| 159 |
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| 160 | /*
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| 161 | * Basic tests, bail out on failure.
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| 162 | */
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| 163 | RTTestSub(hTest, "Basics");
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| 164 | Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
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| 165 | Req.Hdr.cbReq = sizeof(Req);
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| 166 | Req.szMsg[0] = '\0';
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| 167 | RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
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| 168 | TSTRTR0THREADPREEMPTION_BASIC, 0, &Req.Hdr), VINF_SUCCESS);
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| 169 | if (RT_FAILURE(rc))
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| 170 | return RTTestSummaryAndDestroy(hTest);
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| 171 | if (Req.szMsg[0] == '!')
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| 172 | {
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| 173 | RTTestIFailed("%s", &Req.szMsg[1]);
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| 174 | return RTTestSummaryAndDestroy(hTest);
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| 175 | }
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| 176 | if (Req.szMsg[0])
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| 177 | RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
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| 178 |
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| 179 | /*
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| 180 | * Is it trusty.
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| 181 | */
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| 182 | RTTestSub(hTest, "RTThreadPreemptIsPendingTrusty");
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| 183 | Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
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| 184 | Req.Hdr.cbReq = sizeof(Req);
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| 185 | Req.szMsg[0] = '\0';
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| 186 | RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
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| 187 | TSTRTR0THREADPREEMPTION_IS_TRUSTY, 0, &Req.Hdr), VINF_SUCCESS);
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| 188 | if (RT_FAILURE(rc))
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| 189 | return RTTestSummaryAndDestroy(hTest);
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| 190 | if (Req.szMsg[0] == '!')
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| 191 | RTTestIFailed("%s", &Req.szMsg[1]);
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| 192 | else if (Req.szMsg[0])
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| 193 | RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
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| 194 |
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| 195 | /*
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| 196 | * Stay in ring-0 until preemption is pending.
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| 197 | */
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| 198 | RTTHREAD ahThreads[RTCPUSET_MAX_CPUS];
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| 199 | uint32_t cThreads = RTMpGetCount();
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| 200 | RTCPUSET OnlineSet;
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| 201 | RTMpGetOnlineSet(&OnlineSet);
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| 202 | for (uint32_t i = 0; i < RT_ELEMENTS(ahThreads); i++)
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| 203 | {
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| 204 | ahThreads[i] = NIL_RTTHREAD;
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| 205 | if (RTCpuSetIsMemberByIndex(&OnlineSet, i))
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| 206 | RTThreadCreateF(&ahThreads[i], MyThreadProc, (void *)(uintptr_t)i, 0, RTTHREADTYPE_DEFAULT,
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| 207 | RTTHREADFLAGS_WAITABLE, "cpu=%u", i);
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| 208 | }
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| 209 |
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| 210 |
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| 211 | RTTestSub(hTest, "Pending Preemption");
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| 212 | RTThreadSleep(250); /** @todo fix GIP initialization? */
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| 213 | for (int i = 0; ; i++)
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| 214 | {
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| 215 | Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
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| 216 | Req.Hdr.cbReq = sizeof(Req);
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| 217 | Req.szMsg[0] = '\0';
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| 218 | RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
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| 219 | TSTRTR0THREADPREEMPTION_IS_PENDING, 0, &Req.Hdr), VINF_SUCCESS);
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| 220 | if ( strcmp(Req.szMsg, "!cLoops=1\n")
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| 221 | || i >= 64)
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| 222 | {
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| 223 | if (Req.szMsg[0] == '!')
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| 224 | RTTestIFailed("%s", &Req.szMsg[1]);
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| 225 | else if (Req.szMsg[0])
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| 226 | RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
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| 227 | break;
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| 228 | }
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| 229 | if ((i % 3) == 0)
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| 230 | RTThreadYield();
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| 231 | else if ((i % 16) == 0)
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| 232 | RTThreadSleep(8);
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| 233 | }
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| 234 |
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| 235 | ASMAtomicWriteBool(&g_fTerminate, true);
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| 236 | for (uint32_t i = 0; i < RT_ELEMENTS(ahThreads); i++)
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| 237 | if (ahThreads[i] != NIL_RTTHREAD)
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| 238 | RTThreadWait(ahThreads[i], 5000, NULL);
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| 239 |
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| 240 | /*
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| 241 | * Test nested RTThreadPreemptDisable calls.
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| 242 | */
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| 243 | RTTestSub(hTest, "Nested");
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| 244 | Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
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| 245 | Req.Hdr.cbReq = sizeof(Req);
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| 246 | Req.szMsg[0] = '\0';
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| 247 | RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
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| 248 | TSTRTR0THREADPREEMPTION_NESTED, 0, &Req.Hdr), VINF_SUCCESS);
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| 249 | if (Req.szMsg[0] == '!')
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| 250 | RTTestIFailed("%s", &Req.szMsg[1]);
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| 251 | else if (Req.szMsg[0])
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| 252 | RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
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| 253 |
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| 254 |
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| 255 | /*
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| 256 | * Test thread-context hooks.
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| 257 | */
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| 258 | RTTestSub(hTest, "RTThreadCtxHooks");
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| 259 | uint64_t u64StartTS = RTTimeMilliTS();
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| 260 | uint64_t cMsMax = 60000; /* ca. 1 minute timeout. */
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| 261 | uint64_t cMsElapsed;
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| 262 | for (unsigned i = 0; i < 50; i++)
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| 263 | {
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| 264 | Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
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| 265 | Req.Hdr.cbReq = sizeof(Req);
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| 266 | Req.szMsg[0] = '\0';
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| 267 | RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
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| 268 | TSTRTR0THREADPREEMPTION_CTXHOOKS, 0, &Req.Hdr), VINF_SUCCESS);
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| 269 | if (RT_FAILURE(rc))
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| 270 | return RTTestSummaryAndDestroy(hTest);
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| 271 | if (Req.szMsg[0] == '!')
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| 272 | RTTestIFailed("%s", &Req.szMsg[1]);
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| 273 | else if (Req.szMsg[0])
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| 274 | RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
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| 275 | if (!(i % 10))
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| 276 | RTTestIPrintf(RTTESTLVL_ALWAYS, "RTThreadCtxHooks passed %u iteration(s)\n", i);
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| 277 |
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| 278 | /* Check timeout and bail. */
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| 279 | cMsElapsed = RTTimeMilliTS() - u64StartTS;
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| 280 | if (cMsElapsed > cMsMax)
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| 281 | {
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| 282 | RTTestIPrintf(RTTESTLVL_INFO, "RTThreadCtxHooks Stopping iterations. %RU64 ms. for %u iterations.\n",
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| 283 | cMsElapsed, i);
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| 284 | break;
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| 285 | }
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| 286 | }
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| 287 |
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| 288 | /*
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| 289 | * Done.
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| 290 | */
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| 291 | return RTTestSummaryAndDestroy(hTest);
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| 292 | #endif
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| 293 | }
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| 294 |
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| 295 |
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| 296 | #if !defined(VBOX_WITH_HARDENING) || !defined(RT_OS_WINDOWS)
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| 297 | /**
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| 298 | * Main entry point.
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| 299 | */
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| 300 | int main(int argc, char **argv, char **envp)
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| 301 | {
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| 302 | return TrustedMain(argc, argv, envp);
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| 303 | }
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| 304 | #endif
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| 305 |
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