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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) 2008-2020 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.
*/
/*********************************************************************************************************************************
* 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_SUPLIB);
if (argc != 3)
{
RTPrintf(TESTCASE ": Usage is ./tstPDMAsyncCompletion <source> <dest>\n");
return 1;
}
PVM pVM;
PUVM pUVM;
int rc = VMR3Create(1, NULL, 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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