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-rw-r--r--src/VBox/VMM/testcase/tstPDMAsyncCompletion.cpp284
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diff --git a/src/VBox/VMM/testcase/tstPDMAsyncCompletion.cpp b/src/VBox/VMM/testcase/tstPDMAsyncCompletion.cpp
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+/* $Id: tstPDMAsyncCompletion.cpp $ */
+/** @file
+ * PDM Asynchronous Completion Testcase.
+ *
+ * This testcase is for testing the async completion interface.
+ * It implements a file copy program which uses the interface to copy the data.
+ *
+ * Use: ./tstPDMAsyncCompletion <source> <destination>
+ */
+
+/*
+ * Copyright (C) 2008-2023 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>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#define LOG_GROUP LOG_GROUP_PDM_ASYNC_COMPLETION
+
+#include "VMInternal.h" /* UVM */
+#include <VBox/vmm/vm.h>
+#include <VBox/vmm/uvm.h>
+#include <VBox/vmm/pdmasynccompletion.h>
+#include <VBox/vmm/vmm.h>
+#include <VBox/vmm/cpum.h>
+#include <iprt/errcore.h>
+#include <VBox/log.h>
+#include <VBox/vmm/pdmapi.h>
+#include <iprt/alloc.h>
+#include <iprt/asm.h>
+#include <iprt/assert.h>
+#include <iprt/file.h>
+#include <iprt/initterm.h>
+#include <iprt/semaphore.h>
+#include <iprt/stream.h>
+#include <iprt/string.h>
+#include <iprt/thread.h>
+
+#define TESTCASE "tstPDMAsyncCompletion"
+
+/*
+ * Number of simultaneous active tasks.
+ */
+#define NR_TASKS 80
+#define BUFFER_SIZE (64*_1K)
+
+/* Buffers to store data in .*/
+uint8_t *g_AsyncCompletionTasksBuffer[NR_TASKS];
+PPDMASYNCCOMPLETIONTASK g_AsyncCompletionTasks[NR_TASKS];
+volatile uint32_t g_cTasksLeft;
+RTSEMEVENT g_FinishedEventSem;
+
+static DECLCALLBACK(void) AsyncTaskCompleted(PVM pVM, void *pvUser, void *pvUser2, int rc)
+{
+ RT_NOREF4(pVM, pvUser, pvUser2, rc);
+ LogFlow((TESTCASE ": %s: pVM=%p pvUser=%p pvUser2=%p\n", __FUNCTION__, pVM, pvUser, pvUser2));
+
+ uint32_t cTasksStillLeft = ASMAtomicDecU32(&g_cTasksLeft);
+
+ if (!cTasksStillLeft)
+ {
+ /* All tasks processed. Wakeup main. */
+ RTSemEventSignal(g_FinishedEventSem);
+ }
+}
+
+/**
+ * Entry point.
+ */
+extern "C" DECLEXPORT(int) TrustedMain(int argc, char **argv, char **envp)
+{
+ RT_NOREF1(envp);
+ int rcRet = 0; /* error count */
+ PPDMASYNCCOMPLETIONENDPOINT pEndpointSrc, pEndpointDst;
+
+ RTR3InitExe(argc, &argv, RTR3INIT_FLAGS_TRY_SUPLIB);
+
+ if (argc != 3)
+ {
+ RTPrintf(TESTCASE ": Usage is ./tstPDMAsyncCompletion <source> <dest>\n");
+ return 1;
+ }
+
+ PVM pVM;
+ PUVM pUVM;
+ int rc = VMR3Create(1 /*cCpus*/, NULL, 0 /*fFlags*/, NULL, NULL, NULL, NULL, &pVM, &pUVM);
+ if (RT_SUCCESS(rc))
+ {
+ /*
+ * Little hack to avoid the VM_ASSERT_EMT assertion.
+ */
+ RTTlsSet(pVM->pUVM->vm.s.idxTLS, &pVM->pUVM->aCpus[0]);
+ pVM->pUVM->aCpus[0].pUVM = pVM->pUVM;
+ pVM->pUVM->aCpus[0].vm.s.NativeThreadEMT = RTThreadNativeSelf();
+
+ /*
+ * Create the template.
+ */
+ PPDMASYNCCOMPLETIONTEMPLATE pTemplate;
+ rc = PDMR3AsyncCompletionTemplateCreateInternal(pVM, &pTemplate, AsyncTaskCompleted, NULL, "Test");
+ if (RT_FAILURE(rc))
+ {
+ RTPrintf(TESTCASE ": Error while creating the template!! rc=%d\n", rc);
+ return 1;
+ }
+
+ /*
+ * Create event semaphore.
+ */
+ rc = RTSemEventCreate(&g_FinishedEventSem);
+ AssertRC(rc);
+
+ /*
+ * Create the temporary buffers.
+ */
+ for (unsigned i=0; i < NR_TASKS; i++)
+ {
+ g_AsyncCompletionTasksBuffer[i] = (uint8_t *)RTMemAllocZ(BUFFER_SIZE);
+ if (!g_AsyncCompletionTasksBuffer[i])
+ {
+ RTPrintf(TESTCASE ": out of memory!\n");
+ return ++rcRet;
+ }
+ }
+
+ /* Create the destination as the async completion API can't do this. */
+ RTFILE FileTmp;
+ rc = RTFileOpen(&FileTmp, argv[2], RTFILE_O_READWRITE | RTFILE_O_OPEN_CREATE | RTFILE_O_DENY_NONE);
+ if (RT_FAILURE(rc))
+ {
+ RTPrintf(TESTCASE ": Error while creating the destination!! rc=%d\n", rc);
+ return ++rcRet;
+ }
+ RTFileClose(FileTmp);
+
+ /* Create our file endpoint */
+ rc = PDMR3AsyncCompletionEpCreateForFile(&pEndpointSrc, argv[1], 0, pTemplate);
+ if (RT_SUCCESS(rc))
+ {
+ rc = PDMR3AsyncCompletionEpCreateForFile(&pEndpointDst, argv[2], 0, pTemplate);
+ if (RT_SUCCESS(rc))
+ {
+ PDMR3PowerOn(pVM);
+
+ /* Wait for all threads to finish initialization. */
+ RTThreadSleep(100);
+
+ int fReadPass = true;
+ uint64_t cbSrc;
+ size_t offSrc = 0;
+ size_t offDst = 0;
+ uint32_t cTasksUsed = 0;
+
+ rc = PDMR3AsyncCompletionEpGetSize(pEndpointSrc, &cbSrc);
+ if (RT_SUCCESS(rc))
+ {
+ /* Copy the data. */
+ for (;;)
+ {
+ if (fReadPass)
+ {
+ cTasksUsed = (BUFFER_SIZE * NR_TASKS) <= (cbSrc - offSrc)
+ ? NR_TASKS
+ : ((cbSrc - offSrc) / BUFFER_SIZE)
+ + ((cbSrc - offSrc) % BUFFER_SIZE) > 0
+ ? 1
+ : 0;
+
+ g_cTasksLeft = cTasksUsed;
+
+ for (uint32_t i = 0; i < cTasksUsed; i++)
+ {
+ size_t cbRead = ((size_t)offSrc + BUFFER_SIZE) <= cbSrc ? BUFFER_SIZE : cbSrc - offSrc;
+ RTSGSEG DataSeg;
+
+ DataSeg.pvSeg = g_AsyncCompletionTasksBuffer[i];
+ DataSeg.cbSeg = cbRead;
+
+ rc = PDMR3AsyncCompletionEpRead(pEndpointSrc, offSrc, &DataSeg, 1, cbRead, NULL,
+ &g_AsyncCompletionTasks[i]);
+ AssertRC(rc);
+ offSrc += cbRead;
+ if (offSrc == cbSrc)
+ break;
+ }
+ }
+ else
+ {
+ g_cTasksLeft = cTasksUsed;
+
+ for (uint32_t i = 0; i < cTasksUsed; i++)
+ {
+ size_t cbWrite = (offDst + BUFFER_SIZE) <= cbSrc ? BUFFER_SIZE : cbSrc - offDst;
+ RTSGSEG DataSeg;
+
+ DataSeg.pvSeg = g_AsyncCompletionTasksBuffer[i];
+ DataSeg.cbSeg = cbWrite;
+
+ rc = PDMR3AsyncCompletionEpWrite(pEndpointDst, offDst, &DataSeg, 1, cbWrite, NULL,
+ &g_AsyncCompletionTasks[i]);
+ AssertRC(rc);
+ offDst += cbWrite;
+ if (offDst == cbSrc)
+ break;
+ }
+ }
+
+ rc = RTSemEventWait(g_FinishedEventSem, RT_INDEFINITE_WAIT);
+ AssertRC(rc);
+
+ if (!fReadPass && (offDst == cbSrc))
+ break;
+ else if (fReadPass)
+ fReadPass = false;
+ else
+ {
+ cTasksUsed = 0;
+ fReadPass = true;
+ }
+ }
+ }
+ else
+ {
+ RTPrintf(TESTCASE ": Error querying size of the endpoint!! rc=%d\n", rc);
+ rcRet++;
+ }
+
+ PDMR3PowerOff(pVM);
+ PDMR3AsyncCompletionEpClose(pEndpointDst);
+ }
+ PDMR3AsyncCompletionEpClose(pEndpointSrc);
+ }
+
+ rc = VMR3Destroy(pUVM);
+ AssertMsg(rc == VINF_SUCCESS, ("%s: Destroying VM failed rc=%Rrc!!\n", __FUNCTION__, rc));
+ VMR3ReleaseUVM(pUVM);
+
+ /*
+ * Clean up.
+ */
+ for (uint32_t i = 0; i < NR_TASKS; i++)
+ {
+ RTMemFree(g_AsyncCompletionTasksBuffer[i]);
+ }
+ }
+ else
+ {
+ RTPrintf(TESTCASE ": failed to create VM!! rc=%Rrc\n", rc);
+ rcRet++;
+ }
+
+ return rcRet;
+}
+
+
+#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
+
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