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diff --git a/src/VBox/Runtime/testcase/tstRTR0SemMutexDriver.cpp b/src/VBox/Runtime/testcase/tstRTR0SemMutexDriver.cpp
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+++ b/src/VBox/Runtime/testcase/tstRTR0SemMutexDriver.cpp
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+/* $Id: tstRTR0SemMutexDriver.cpp $ */
+/** @file
+ * IPRT R0 Testcase - Thread Preemption, driver program.
+ */
+
+/*
+ * Copyright (C) 2009-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include <iprt/initterm.h>
+
+#include <iprt/errcore.h>
+#include <iprt/path.h>
+#include <iprt/param.h>
+#include <iprt/stream.h>
+#include <iprt/string.h>
+#include <iprt/test.h>
+#include <iprt/thread.h>
+#ifdef VBOX
+# include <VBox/sup.h>
+# include "tstRTR0SemMutex.h"
+#endif
+
+
+/*********************************************************************************************************************************
+* Structures and Typedefs *
+*********************************************************************************************************************************/
+typedef struct TSTRTR0SEMMUTEXREQ
+{
+ SUPR0SERVICEREQHDR Hdr;
+ char szMsg[256];
+} TSTRTR0SEMMUTEXREQ;
+typedef TSTRTR0SEMMUTEXREQ *PTSTRTR0SEMMUTEXREQ;
+
+
+/*********************************************************************************************************************************
+* Global Variables *
+*********************************************************************************************************************************/
+static RTTEST g_hTest;
+
+
+/**
+ * Thread function employed by tstDoThreadedTest.
+ *
+ * @returns IPRT status code.
+ * @param hThreadSelf The thread.
+ * @param pvUser The operation to perform.
+ */
+static DECLCALLBACK(int) tstThreadFn(RTTHREAD hThreadSelf, void *pvUser)
+{
+ RT_NOREF1(hThreadSelf);
+ uint32_t u32 = (uint32_t)(uintptr_t)pvUser;
+ TSTRTR0SEMMUTEX enmDo = (TSTRTR0SEMMUTEX)RT_LOWORD(u32);
+ uint32_t cSecs = RT_HIWORD(u32);
+ TSTRTR0SEMMUTEXREQ Req;
+ RT_ZERO(Req);
+ Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+ Req.Hdr.cbReq = sizeof(Req);
+ Req.szMsg[0] = '\0';
+ RTTEST_CHECK_RC_RET(g_hTest, SUPR3CallR0Service("tstRTR0SemMutex", sizeof("tstRTR0SemMutex") - 1,
+ enmDo, cSecs, &Req.Hdr),
+ VINF_SUCCESS,
+ rcCheck);
+ if (Req.szMsg[0] == '!')
+ {
+ RTTestFailed(g_hTest, "%s", &Req.szMsg[1]);
+ return VERR_GENERAL_FAILURE;
+ }
+ if (Req.szMsg[0])
+ RTTestPrintf(g_hTest, RTTESTLVL_ALWAYS, "%s", Req.szMsg);
+ return VINF_SUCCESS;
+}
+
+/**
+ * Performs a threaded test.
+ *
+ * @returns true on success, false on failure.
+ * @param enmSetup The setup operation number.
+ * @param enmDo The do-it operation number.
+ * @param enmCleanup The cleanup operation number.
+ * @param cThreads The number of threads.
+ * @param pReq The request structure.
+ * @param pszTest The test name.
+ */
+static bool tstDoThreadedTest(TSTRTR0SEMMUTEX enmSetup, TSTRTR0SEMMUTEX enmDo, TSTRTR0SEMMUTEX enmCleanup,
+ unsigned cThreads, unsigned cSecs, PTSTRTR0SEMMUTEXREQ pReq, const char *pszTest)
+{
+ RTTestSubF(g_hTest, "%s - %u threads", pszTest, cThreads);
+ RTTHREAD ahThreads[32];
+ RTTESTI_CHECK_RET(cThreads <= RT_ELEMENTS(ahThreads), false);
+
+ /*
+ * Setup.
+ */
+ pReq->Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+ pReq->Hdr.cbReq = sizeof(*pReq);
+ pReq->szMsg[0] = '\0';
+ RTTESTI_CHECK_RC_RET(SUPR3CallR0Service("tstRTR0SemMutex", sizeof("tstRTR0SemMutex") - 1, enmSetup, 0, &pReq->Hdr),
+ VINF_SUCCESS, false);
+ if (pReq->szMsg[0] == '!')
+ return !!RTTestIFailedRc(false, "%s", &pReq->szMsg[1]);
+ if (pReq->szMsg[0])
+ RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", pReq->szMsg);
+
+ /*
+ * Test execution.
+ */
+ for (unsigned i = 0; i < RT_ELEMENTS(ahThreads); i++)
+ ahThreads[i] = NIL_RTTHREAD;
+
+ int rc = VINF_SUCCESS;
+ for (unsigned i = 0; i < cThreads && RT_SUCCESS(rc); i++)
+ rc = RTThreadCreateF(&ahThreads[i], tstThreadFn, (void *)(uintptr_t)RT_MAKE_U32(enmDo, cSecs), 0, RTTHREADTYPE_DEFAULT,
+ RTTHREADFLAGS_WAITABLE, "test-%u", i);
+
+ for (unsigned i = 0; i < cThreads; i++)
+ if (ahThreads[i] != NIL_RTTHREAD)
+ {
+ int rcThread = VINF_SUCCESS;
+ int rc2 = RTThreadWait(ahThreads[i], 3600*1000, &rcThread);
+ if (RT_SUCCESS(rc2))
+ {
+ ahThreads[i] = NIL_RTTHREAD;
+ if (RT_FAILURE(rcThread) && RT_SUCCESS(rc2))
+ rc = rcThread;
+ }
+ else if (RT_SUCCESS(rc))
+ rc = rc2;
+ }
+
+ /*
+ * Cleanup.
+ */
+ pReq->Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+ pReq->Hdr.cbReq = sizeof(*pReq);
+ pReq->szMsg[0] = '\0';
+ RTTESTI_CHECK_RC_RET(rc = SUPR3CallR0Service("tstRTR0SemMutex", sizeof("tstRTR0SemMutex") - 1, enmCleanup, 0, &pReq->Hdr),
+ VINF_SUCCESS, false);
+ if (pReq->szMsg[0] == '!')
+ return !!RTTestIFailedRc(false, "%s", &pReq->szMsg[1]);
+ if (pReq->szMsg[0])
+ RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", pReq->szMsg);
+
+ if (RT_FAILURE(rc))
+ for (unsigned i = 0; i < cThreads; i++)
+ if (ahThreads[i] != NIL_RTTHREAD)
+ RTThreadWait(ahThreads[i], 1000, NULL);
+
+ return RT_SUCCESS(rc);
+}
+
+
+/**
+ * Entry point.
+ */
+extern "C" DECLEXPORT(int) TrustedMain(int argc, char **argv, char **envp)
+{
+ RT_NOREF3(argc, argv, envp);
+#ifndef VBOX
+ RTPrintf("tstSup: SKIPPED\n");
+ return 0;
+#else
+ /*
+ * Init.
+ */
+ RTTEST hTest;
+ int rc = RTTestInitAndCreate("tstRTR0SemMutex", &hTest);
+ if (rc)
+ return rc;
+ g_hTest = hTest;
+ RTTestBanner(hTest);
+
+ PSUPDRVSESSION pSession;
+ rc = SUPR3Init(&pSession);
+ if (RT_FAILURE(rc))
+ {
+ RTTestFailed(hTest, "SUPR3Init failed with rc=%Rrc\n", rc);
+ return RTTestSummaryAndDestroy(hTest);
+ }
+
+ char szPath[RTPATH_MAX];
+ rc = RTPathExecDir(szPath, sizeof(szPath));
+ if (RT_SUCCESS(rc))
+ rc = RTPathAppend(szPath, sizeof(szPath), "tstRTR0SemMutex.r0");
+ if (RT_FAILURE(rc))
+ {
+ RTTestFailed(hTest, "Failed constructing .r0 filename (rc=%Rrc)", rc);
+ return RTTestSummaryAndDestroy(hTest);
+ }
+
+ void *pvImageBase;
+ rc = SUPR3LoadServiceModule(szPath, "tstRTR0SemMutex",
+ "TSTRTR0SemMutexSrvReqHandler",
+ &pvImageBase);
+ if (RT_FAILURE(rc))
+ {
+ RTTestFailed(hTest, "SUPR3LoadServiceModule(%s,,,) failed with rc=%Rrc\n", szPath, rc);
+ return RTTestSummaryAndDestroy(hTest);
+ }
+
+ /* test request */
+ TSTRTR0SEMMUTEXREQ Req;
+
+ /*
+ * Sanity checks.
+ */
+ RTTestSub(hTest, "Sanity");
+ Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+ Req.Hdr.cbReq = sizeof(Req);
+ Req.szMsg[0] = '\0';
+ RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0SemMutex", sizeof("tstRTR0SemMutex") - 1,
+ TSTRTR0SEMMUTEX_SANITY_OK, 0, &Req.Hdr), VINF_SUCCESS);
+ if (RT_FAILURE(rc))
+ return RTTestSummaryAndDestroy(hTest);
+ RTTESTI_CHECK_MSG(Req.szMsg[0] == '\0', ("%s", Req.szMsg));
+ if (Req.szMsg[0] != '\0')
+ return RTTestSummaryAndDestroy(hTest);
+
+ Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+ Req.Hdr.cbReq = sizeof(Req);
+ Req.szMsg[0] = '\0';
+ RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0SemMutex", sizeof("tstRTR0SemMutex") - 1,
+ TSTRTR0SEMMUTEX_SANITY_FAILURE, 0, &Req.Hdr), VINF_SUCCESS);
+ if (RT_FAILURE(rc))
+ return RTTestSummaryAndDestroy(hTest);
+ RTTESTI_CHECK_MSG(!strncmp(Req.szMsg, RT_STR_TUPLE("!42failure42")), ("%s", Req.szMsg));
+ if (strncmp(Req.szMsg, RT_STR_TUPLE("!42failure42")))
+ return RTTestSummaryAndDestroy(hTest);
+
+ /*
+ * Basic tests, bail out on failure.
+ */
+ RTTestSub(hTest, "Basics");
+ Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+ Req.Hdr.cbReq = sizeof(Req);
+ Req.szMsg[0] = '\0';
+ RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0SemMutex", sizeof("tstRTR0SemMutex") - 1,
+ TSTRTR0SEMMUTEX_BASIC, 0, &Req.Hdr), VINF_SUCCESS);
+ if (RT_FAILURE(rc))
+ return RTTestSummaryAndDestroy(hTest);
+ if (Req.szMsg[0] == '!')
+ {
+ RTTestIFailed("%s", &Req.szMsg[1]);
+ return RTTestSummaryAndDestroy(hTest);
+ }
+ if (Req.szMsg[0])
+ RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
+
+ /*
+ * Tests with multiple threads for bugs in the contention part of the code.
+ * Test #2: Try to hold the semaphore for 1 ms.
+ * Test #3: Grab and release immediately.
+ * Test #4: Timeout checks. Try grab it for 0-32 ms and hold it for 1 s.
+ */
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST2_SETUP, TSTRTR0SEMMUTEX_TEST2_DO, TSTRTR0SEMMUTEX_TEST2_CLEANUP, 1, 1, &Req, "test #2");
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST2_SETUP, TSTRTR0SEMMUTEX_TEST2_DO, TSTRTR0SEMMUTEX_TEST2_CLEANUP, 2, 3, &Req, "test #2");
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST2_SETUP, TSTRTR0SEMMUTEX_TEST2_DO, TSTRTR0SEMMUTEX_TEST2_CLEANUP, 3, 3, &Req, "test #2");
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST2_SETUP, TSTRTR0SEMMUTEX_TEST2_DO, TSTRTR0SEMMUTEX_TEST2_CLEANUP, 9, 3, &Req, "test #2");
+
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST3_SETUP, TSTRTR0SEMMUTEX_TEST3_DO, TSTRTR0SEMMUTEX_TEST3_CLEANUP, 1, 1, &Req, "test #3");
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST3_SETUP, TSTRTR0SEMMUTEX_TEST3_DO, TSTRTR0SEMMUTEX_TEST3_CLEANUP, 2, 3, &Req, "test #3");
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST3_SETUP, TSTRTR0SEMMUTEX_TEST3_DO, TSTRTR0SEMMUTEX_TEST3_CLEANUP, 3, 3, &Req, "test #3");
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST3_SETUP, TSTRTR0SEMMUTEX_TEST3_DO, TSTRTR0SEMMUTEX_TEST3_CLEANUP, 9, 3, &Req, "test #3");
+
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST4_SETUP, TSTRTR0SEMMUTEX_TEST4_DO, TSTRTR0SEMMUTEX_TEST4_CLEANUP, 1, 1, &Req, "test #4");
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST4_SETUP, TSTRTR0SEMMUTEX_TEST4_DO, TSTRTR0SEMMUTEX_TEST4_CLEANUP, 2, 3, &Req, "test #4");
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST4_SETUP, TSTRTR0SEMMUTEX_TEST4_DO, TSTRTR0SEMMUTEX_TEST4_CLEANUP, 3, 3, &Req, "test #4");
+ tstDoThreadedTest(TSTRTR0SEMMUTEX_TEST4_SETUP, TSTRTR0SEMMUTEX_TEST4_DO, TSTRTR0SEMMUTEX_TEST4_CLEANUP, 9, 3, &Req, "test #4");
+
+ /*
+ * Done.
+ */
+ return RTTestSummaryAndDestroy(hTest);
+#endif
+}
+
+
+#if !defined(VBOX_WITH_HARDENING) || !defined(RT_OS_WINDOWS)
+/**
+ * Main entry point.
+ */
+int main(int argc, char **argv, char **envp)
+{
+ return TrustedMain(argc, argv, envp);
+}
+#endif
+