1 files changed, 304 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/tstRTR0ThreadPreemptionDriver.cpp b/src/VBox/Runtime/testcase/tstRTR0ThreadPreemptionDriver.cpp
new file mode 100644
index 00000000..1b6234e8
--- /dev/null
+++ b/src/VBox/Runtime/testcase/tstRTR0ThreadPreemptionDriver.cpp
@@ -0,0 +1,304 @@
+/* $Id: tstRTR0ThreadPreemptionDriver.cpp $ */
+/** @file
+ * IPRT R0 Testcase - Thread Preemption, driver program.
+ */
+
+/*
+ * Copyright (C) 2009-2020 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE 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.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/initterm.h>
+
+#include <iprt/asm.h>
+#include <iprt/cpuset.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/time.h>
+#include <iprt/thread.h>
+#ifdef VBOX
+# include <VBox/sup.h>
+# include "tstRTR0ThreadPreemption.h"
+#endif
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static bool volatile g_fTerminate = false;
+
+
+/**
+ * Try make sure all online CPUs will be engaged.
+ */
+static DECLCALLBACK(int) MyThreadProc(RTTHREAD hSelf, void *pvCpuIdx)
+{
+    RT_NOREF1(hSelf);
+    RTCPUSET Affinity;
+    RTCpuSetEmpty(&Affinity);
+    RTCpuSetAddByIndex(&Affinity, (intptr_t)pvCpuIdx);
+    RTThreadSetAffinity(&Affinity); /* ignore return code as it's not supported on all hosts. */
+
+    while (!g_fTerminate)
+    {
+        uint64_t tsStart = RTTimeMilliTS();
+        do
+        {
+            ASMNopPause();
+        } while (RTTimeMilliTS() - tsStart < 8);
+        RTThreadSleep(4);
+    }
+
+    return VINF_SUCCESS;
+}
+
+
+/**
+ *  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("tstRTR0ThreadPreemption", &hTest);
+    if (rc)
+        return rc;
+    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), "tstRTR0ThreadPreemption.r0");
+    if (RT_FAILURE(rc))
+    {
+        RTTestFailed(hTest, "Failed constructing .r0 filename (rc=%Rrc)", rc);
+        return RTTestSummaryAndDestroy(hTest);
+    }
+
+    void *pvImageBase;
+    rc = SUPR3LoadServiceModule(szPath, "tstRTR0ThreadPreemption",
+                                "TSTRTR0ThreadPreemptionSrvReqHandler",
+                                &pvImageBase);
+    if (RT_FAILURE(rc))
+    {
+        RTTestFailed(hTest, "SUPR3LoadServiceModule(%s,,,) failed with rc=%Rrc\n", szPath, rc);
+        return RTTestSummaryAndDestroy(hTest);
+    }
+
+    /* test request */
+    struct
+    {
+        SUPR0SERVICEREQHDR  Hdr;
+        char                szMsg[256];
+    } 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("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
+                                             TSTRTR0THREADPREEMPTION_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("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
+                                             TSTRTR0THREADPREEMPTION_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("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
+                                             TSTRTR0THREADPREEMPTION_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);
+
+    /*
+     * Is it trusty.
+     */
+    RTTestSub(hTest, "RTThreadPreemptIsPendingTrusty");
+    Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+    Req.Hdr.cbReq = sizeof(Req);
+    Req.szMsg[0] = '\0';
+    RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
+                                             TSTRTR0THREADPREEMPTION_IS_TRUSTY, 0, &Req.Hdr), VINF_SUCCESS);
+    if (RT_FAILURE(rc))
+        return RTTestSummaryAndDestroy(hTest);
+    if (Req.szMsg[0] == '!')
+        RTTestIFailed("%s", &Req.szMsg[1]);
+    else if (Req.szMsg[0])
+        RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
+
+    /*
+     * Stay in ring-0 until preemption is pending.
+     */
+    RTTHREAD ahThreads[RTCPUSET_MAX_CPUS];
+    RTCPUSET OnlineSet;
+    RTMpGetOnlineSet(&OnlineSet);
+    for (uint32_t i = 0; i < RT_ELEMENTS(ahThreads); i++)
+    {
+        ahThreads[i] = NIL_RTTHREAD;
+        if (RTCpuSetIsMemberByIndex(&OnlineSet, i))
+            RTThreadCreateF(&ahThreads[i], MyThreadProc, (void *)(uintptr_t)i, 0, RTTHREADTYPE_DEFAULT,
+                            RTTHREADFLAGS_WAITABLE, "cpu=%u", i);
+    }
+
+
+    RTTestSub(hTest, "Pending Preemption");
+    RTThreadSleep(250); /** @todo fix GIP initialization? */
+    for (int i = 0; ; i++)
+    {
+        Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+        Req.Hdr.cbReq = sizeof(Req);
+        Req.szMsg[0] = '\0';
+        RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
+                                                 TSTRTR0THREADPREEMPTION_IS_PENDING, 0, &Req.Hdr), VINF_SUCCESS);
+        if (    strcmp(Req.szMsg, "!cLoops=1\n")
+            ||  i >= 64)
+        {
+            if (Req.szMsg[0] == '!')
+                RTTestIFailed("%s", &Req.szMsg[1]);
+            else if (Req.szMsg[0])
+                RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
+            break;
+        }
+        if ((i % 3) == 0)
+            RTThreadYield();
+        else if ((i % 16) == 0)
+            RTThreadSleep(8);
+    }
+
+    ASMAtomicWriteBool(&g_fTerminate, true);
+    for (uint32_t i = 0; i < RT_ELEMENTS(ahThreads); i++)
+        if (ahThreads[i] != NIL_RTTHREAD)
+            RTThreadWait(ahThreads[i], 5000, NULL);
+
+    /*
+     * Test nested RTThreadPreemptDisable calls.
+     */
+    RTTestSub(hTest, "Nested");
+    Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+    Req.Hdr.cbReq = sizeof(Req);
+    Req.szMsg[0] = '\0';
+    RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
+                                             TSTRTR0THREADPREEMPTION_NESTED, 0, &Req.Hdr), VINF_SUCCESS);
+    if (Req.szMsg[0] == '!')
+        RTTestIFailed("%s", &Req.szMsg[1]);
+    else if (Req.szMsg[0])
+        RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
+
+
+    /*
+     * Test thread-context hooks.
+     */
+    RTTestSub(hTest, "RTThreadCtxHooks");
+    uint64_t u64StartTS = RTTimeMilliTS();
+    uint64_t cMsMax     = 60000;        /* ca. 1 minute timeout. */
+    uint64_t cMsElapsed;
+    for (unsigned i = 0; i < 50; i++)
+    {
+        Req.Hdr.u32Magic = SUPR0SERVICEREQHDR_MAGIC;
+        Req.Hdr.cbReq = sizeof(Req);
+        Req.szMsg[0] = '\0';
+        RTTESTI_CHECK_RC(rc = SUPR3CallR0Service("tstRTR0ThreadPreemption", sizeof("tstRTR0ThreadPreemption") - 1,
+                                                 TSTRTR0THREADPREEMPTION_CTXHOOKS, 0, &Req.Hdr), VINF_SUCCESS);
+        if (RT_FAILURE(rc))
+            return RTTestSummaryAndDestroy(hTest);
+        if (Req.szMsg[0] == '!')
+            RTTestIFailed("%s", &Req.szMsg[1]);
+        else if (Req.szMsg[0])
+            RTTestIPrintf(RTTESTLVL_ALWAYS, "%s", Req.szMsg);
+        if (!(i % 10))
+            RTTestIPrintf(RTTESTLVL_ALWAYS, "RTThreadCtxHooks passed %u iteration(s)\n", i);
+
+        /* Check timeout and bail. */
+        cMsElapsed = RTTimeMilliTS() - u64StartTS;
+        if (cMsElapsed > cMsMax)
+        {
+            RTTestIPrintf(RTTESTLVL_INFO, "RTThreadCtxHooks Stopping iterations. %RU64 ms. for %u iterations.\n",
+                          cMsElapsed, i);
+            break;
+        }
+    }
+
+    /*
+     * 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
+