/**
* Sets up a test file creating the I/O thread.
*
* @returns VBox status code.
* @param pVM Pointer to the shared VM instance structure.
* @param pTestFile Pointer to the uninitialized test file structure.
* @param iTestId Unique test id.
*/
static int tstPDMACStressTestFileOpen(PVM pVM, PPDMACTESTFILE pTestFile, unsigned iTestId)
{
int rc = VERR_NO_MEMORY;
/* Size is a multiple of 512 */
pTestFile->cbFileMax = RTRandU64Ex(FILE_SIZE_MIN, FILE_SIZE_MAX) & ~(511UL);
pTestFile->cbFileCurr = 0;
pTestFile->cbFileSegment = RTRandU32Ex(SEGMENT_SIZE_MIN, RT_MIN(pTestFile->cbFileMax, SEGMENT_SIZE_MAX)) & ~((size_t)511);
Assert(pTestFile->cbFileMax >= pTestFile->cbFileSegment);
/* Set up the segments array. */
pTestFile->cSegments = pTestFile->cbFileMax / pTestFile->cbFileSegment;
pTestFile->cSegments += ((pTestFile->cbFileMax % pTestFile->cbFileSegment) > 0) ? 1 : 0;
pTestFile->paSegs = (PPDMACTESTFILESEG)RTMemAllocZ(pTestFile->cSegments * sizeof(PDMACTESTFILESEG));
if (pTestFile->paSegs)
{
/* Init the segments */
for (unsigned i = 0; i < pTestFile->cSegments; i++)
{
PPDMACTESTFILESEG pSeg = &pTestFile->paSegs[i];
pSeg->off = (RTFOFF)i * pTestFile->cbFileSegment;
pSeg->cbSegment = pTestFile->cbFileSegment;
/* Let the buffer point to a random position in the test pattern. */
uint32_t offTestPattern = RTRandU64Ex(0, g_cbTestPattern - pSeg->cbSegment);
pSeg->pbData = g_pbTestPattern + offTestPattern;
}
/* Init task array. */
pTestFile->cTasksActiveMax = RTRandU32Ex(1, TASK_ACTIVE_MAX);
pTestFile->paTasks = (PPDMACTESTFILETASK)RTMemAllocZ(pTestFile->cTasksActiveMax * sizeof(PDMACTESTFILETASK));
if (pTestFile->paTasks)
{
/* Create the template */
char szDesc[256];
RTStrPrintf(szDesc, sizeof(szDesc), "Template-%d", iTestId);
rc = PDMR3AsyncCompletionTemplateCreateInternal(pVM, &pTestFile->pTemplate, tstPDMACStressTestFileTaskCompleted, pTestFile, szDesc);
if (RT_SUCCESS(rc))
{
/* Open the endpoint now. Because async completion endpoints cannot create files we have to do it before. */
char szFile[RTPATH_MAX];
RTStrPrintf(szFile, sizeof(szFile), "tstPDMAsyncCompletionStress-%d.tmp", iTestId);
RTFILE FileTmp;
rc = RTFileOpen(&FileTmp, szFile, RTFILE_O_READWRITE | RTFILE_O_CREATE | RTFILE_O_DENY_NONE);
if (RT_SUCCESS(rc))
{
RTFileClose(FileTmp);
rc = PDMR3AsyncCompletionEpCreateForFile(&pTestFile->hEndpoint, szFile, 0, pTestFile->pTemplate);
if (RT_SUCCESS(rc))
{
char szThreadDesc[256];
pTestFile->fRunning = true;
/* Create the thread creating the I/O for the given file. */
RTStrPrintf(szThreadDesc, sizeof(szThreadDesc), "PDMACThread-%d", iTestId);
rc = PDMR3ThreadCreate(pVM, &pTestFile->hThread, pTestFile, tstPDMACTestFileThread,
NULL, 0, RTTHREADTYPE_IO, szThreadDesc);
if (RT_SUCCESS(rc))
{
rc = PDMR3ThreadResume(pTestFile->hThread);
AssertRC(rc);
RTPrintf(TESTCASE ": Created test file %s cbFileMax=%llu cbFileSegment=%u cSegments=%u cTasksActiveMax=%u\n",
szFile, pTestFile->cbFileMax, pTestFile->cbFileSegment, pTestFile->cSegments, pTestFile->cTasksActiveMax);
return VINF_SUCCESS;
}
PDMR3AsyncCompletionEpClose(pTestFile->hEndpoint);
}
RTFileDelete(szFile);
}
PDMR3AsyncCompletionTemplateDestroy(pTestFile->pTemplate);
}
RTMemFree(pTestFile->paTasks);
}
else
rc = VERR_NO_MEMORY;
RTMemFree(pTestFile->paSegs);
}
else
rc = VERR_NO_MEMORY;
RTPrintf(TESTCASE ": Opening test file with id %d failed rc=%Rrc\n", iTestId, rc);
return rc;
}
/**
* Entry point.
*/
extern "C" DECLEXPORT(int) TrustedMain(int argc, char **argv, char **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;
}