tstPDMAsyncCompletionStress.cpp@ 24181

Last change on this file since 24181 was 23973, checked in by vboxsync, 15 years ago
*,RTFileOpen: Fixing RTFileOpen flag misdesign: The deny, access and action flags are mandatory now.
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1	/* $Id: tstPDMAsyncCompletionStress.cpp 23973 2009-10-22 12:34:22Z vboxsync $ */
2	/** @file
3	* PDM Asynchronous Completion Stresstest.
4	*
5	* This testcase is for stress testing the async completion interface.
6	*/
7
8	/*
9	* Copyright (C) 2008-2009 Sun Microsystems, Inc.
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License (GPL) as published by the Free Software
15	* Foundation, in version 2 as it comes in the "COPYING" file of the
16	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
17	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
18	*
19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
20	* Clara, CA 95054 USA or visit http://www.sun.com if you need
21	* additional information or have any questions.
22	*/
23
24	/*******************************************************************************
25	* Header Files *
26	*******************************************************************************/
27	#define LOG_GROUP LOG_GROUP_PDM_ASYNC_COMPLETION
28
29	#include "../VMInternal.h" /* UVM */
30	#include <VBox/vm.h>
31	#include <VBox/uvm.h>
32	#include <VBox/pdmasynccompletion.h>
33	#include <VBox/vmm.h>
34	#include <VBox/cpum.h>
35	#include <VBox/err.h>
36	#include <VBox/log.h>
37	#include <VBox/pdmapi.h>
38	#include <VBox/pdmthread.h>
39	#include <iprt/alloc.h>
40	#include <iprt/asm.h>
41	#include <iprt/assert.h>
42	#include <iprt/file.h>
43	#include <iprt/initterm.h>
44	#include <iprt/semaphore.h>
45	#include <iprt/rand.h>
46	#include <iprt/string.h>
47	#include <iprt/path.h>
48	#include <iprt/stream.h>
49	#include <iprt/thread.h>
50	#include <iprt/param.h>
51
52	#define TESTCASE "tstPDMAsyncCompletionStress"
53
54	#if 0
55	/** Number of simultaneous open endpoints for reading and writing. */
56	#define NR_OPEN_ENDPOINTS 10
57	/** Test pattern size. */
58	#define TEST_PATTERN_SIZE (100*_1M)
59	/** Minimum file size. */
60	#define FILE_SIZE_MIN (100 * _1M)
61	/** Maximum file size. */
62	#define FILE_SIZE_MAX (10000UL * _1M)
63	/** Minimum segment size. */
64	#define SEGMENT_SIZE_MIN (512)
65	/** Maximum segment size. */
66	#define SEGMENT_SIZE_MAX (TEST_PATTERN_SIZE)
67	/** Maximum number of active tasks. */
68	#define TASK_ACTIVE_MAX (1024)
69	/** Maximum size of a transfer. */
70	#define TASK_TRANSFER_SIZE_MAX (10*_1M)
71	#else
72	/** Number of simultaneous open endpoints for reading and writing. */
73	#define NR_OPEN_ENDPOINTS 5
74	/** Test pattern size. */
75	#define TEST_PATTERN_SIZE (10*_1M)
76	/** Minimum file size. */
77	#define FILE_SIZE_MIN (100 * _1M)
78	/** Maximum file size. */
79	#define FILE_SIZE_MAX (1000UL * _1M)
80	/** Minimum segment size. */
81	#define SEGMENT_SIZE_MIN (512)
82	/** Maximum segment size. */
83	#define SEGMENT_SIZE_MAX (TEST_PATTERN_SIZE)
84	/** Maximum number of active tasks. */
85	#define TASK_ACTIVE_MAX (1)
86	/** Maximum size of a transfer. */
87	#define TASK_TRANSFER_SIZE_MAX (_1M)
88	#endif
89
90	/**
91	* Structure defining a file segment.
92	*/
93	typedef struct PDMACTESTFILESEG
94	{
95	/** Start offset in the file. */
96	RTFOFF off;
97	/** Size of the segment. */
98	size_t cbSegment;
99	/** Pointer to the start of the data in the test pattern used for the segment. */
100	uint8_t *pbData;
101	} PDMACTESTFILESEG, *PPDMACTESTFILESEG;
102
103	/**
104	* Structure defining a I/O task.
105	*/
106	typedef struct PDMACTESTFILETASK
107	{
108	/** Flag whether the task is currently active. */
109	bool fActive;
110	/** Flag whether this is a write. */
111	bool fWrite;
112	/** Start offset. */
113	RTFOFF off;
114	/** Data segment */
115	PDMDATASEG DataSeg;
116	/** Task handle. */
117	PPDMASYNCCOMPLETIONTASK hTask;
118	} PDMACTESTFILETASK, *PPDMACTESTFILETASK;
119
120	/**
121	* Structure defining a test file.
122	*/
123	typedef struct PDMACTESTFILE
124	{
125	/** The PDM async completion endpoint handle. */
126	PPDMASYNCCOMPLETIONENDPOINT hEndpoint;
127	/** Template used for this file. */
128	PPDMASYNCCOMPLETIONTEMPLATE pTemplate;
129	/** Maximum size of the file. */
130	uint64_t cbFileMax;
131	/** Current size of the file. */
132	uint64_t cbFileCurr;
133	/** Size of a file segment. */
134	size_t cbFileSegment;
135	/** Maximum number of segments. */
136	unsigned cSegments;
137	/** Pointer to the array describing how the file is assembled
138	* of the test pattern. Used for comparing read data to ensure
139	* that no corruption occured.
140	*/
141	PPDMACTESTFILESEG paSegs;
142	/** Maximum number of active tasks for this endpoint. */
143	uint32_t cTasksActiveMax;
144	/** Number of current active tasks. */
145	volatile uint32_t cTasksActiveCurr;
146	/** Pointer to the array of task. */
147	PPDMACTESTFILETASK paTasks;
148	/** I/O thread handle. */
149	PPDMTHREAD hThread;
150	/** Flag whether the thread should terminate. */
151	bool fRunning;
152	} PDMACTESTFILE, *PPDMACTESTFILE;
153
154	/** Buffer storing the random test pattern. */
155	uint8_t *g_pbTestPattern = NULL;
156	/** Size of the test pattern. */
157	size_t g_cbTestPattern;
158	/** Array holding test files. */
159	PDMACTESTFILE g_aTestFiles[NR_OPEN_ENDPOINTS];
160
161	static void tstPDMACStressTestFileVerify(PPDMACTESTFILE pTestFile, PPDMACTESTFILETASK pTestTask)
162	{
163	size_t cbLeft = pTestTask->DataSeg.cbSeg;
164	RTFOFF off = pTestTask->off;
165	uint8_t pbBuf = (uint8_t )pTestTask->DataSeg.pvSeg;
166
167	while (cbLeft)
168	{
169	size_t cbCompare;
170	unsigned iSeg = off / pTestFile->cbFileSegment;
171	PPDMACTESTFILESEG pSeg = &pTestFile->paSegs[iSeg];
172	uint8_t *pbTestPattern;
173	unsigned offSeg = off - pSeg->off;
174
175	cbCompare = RT_MIN(cbLeft, pSeg->cbSegment - offSeg);
176	pbTestPattern = pSeg->pbData + offSeg;
177
178	if (memcmp(pbBuf, pbTestPattern, cbCompare))
179	AssertMsgFailed(("Unexpected data for off=%RTfoff size=%u\n", pTestTask->off, pTestTask->DataSeg.cbSeg));
180
181	pbBuf += cbCompare;
182	off += cbCompare;
183	cbLeft -= cbCompare;
184	}
185	}
186
187	static void tstPDMACStressTestFileFillBuffer(PPDMACTESTFILE pTestFile, PPDMACTESTFILETASK pTestTask)
188	{
189	uint8_t pbBuf = (uint8_t )pTestTask->DataSeg.pvSeg;
190	size_t cbLeft = pTestTask->DataSeg.cbSeg;
191	RTFOFF off = pTestTask->off;
192
193	Assert(pTestTask->fWrite && pTestTask->fActive);
194
195	while (cbLeft)
196	{
197	size_t cbFill;
198	unsigned iSeg = off / pTestFile->cbFileSegment;
199	PPDMACTESTFILESEG pSeg = &pTestFile->paSegs[iSeg];
200	uint8_t *pbTestPattern;
201	unsigned offSeg = off - pSeg->off;
202
203	cbFill = RT_MIN(cbLeft, pSeg->cbSegment - offSeg);
204	pbTestPattern = pSeg->pbData + offSeg;
205
206	memcpy(pbBuf, pbTestPattern, cbFill);
207
208	pbBuf += cbFill;
209	off += cbFill;
210	cbLeft -= cbFill;
211	}
212	}
213
214	static int tstPDMACStressTestFileWrite(PPDMACTESTFILE pTestFile, PPDMACTESTFILETASK pTestTask)
215	{
216	int rc = VINF_SUCCESS;
217
218	Assert(!pTestTask->fActive);
219
220	pTestTask->fActive = true;
221	pTestTask->fWrite = true;
222	pTestTask->DataSeg.cbSeg = RTRandU32Ex(512, TASK_TRANSFER_SIZE_MAX) & ~511;
223
224	uint64_t offMax;
225
226	/* Did we reached the maximum file size */
227	if (pTestFile->cbFileCurr < pTestFile->cbFileMax)
228	{
229	offMax = (pTestFile->cbFileMax - pTestFile->cbFileCurr) < pTestTask->DataSeg.cbSeg
230	? pTestFile->cbFileMax - pTestTask->DataSeg.cbSeg
231	: pTestFile->cbFileCurr;
232	}
233	else
234	offMax = pTestFile->cbFileMax - pTestTask->DataSeg.cbSeg;
235
236	uint64_t offMin;
237
238	/*
239	* If we reached the maximum file size write in the whole file
240	* otherwise we will enforce the range for random offsets to let it grow
241	* more quickly.
242	*/
243	if (pTestFile->cbFileCurr == pTestFile->cbFileMax)
244	offMin = 0;
245	else
246	offMin = RT_MIN(pTestFile->cbFileCurr, offMax);
247
248
249	pTestTask->off = RTRandU64Ex(offMin, offMax) & ~511;
250
251	/* Set new file size of required */
252	if ((uint64_t)pTestTask->off + pTestTask->DataSeg.cbSeg > pTestFile->cbFileCurr)
253	pTestFile->cbFileCurr = pTestTask->off + pTestTask->DataSeg.cbSeg;
254
255	AssertMsg(pTestFile->cbFileCurr <= pTestFile->cbFileMax,
256	("Current file size (%llu) exceeds final size (%llu)\n",
257	pTestFile->cbFileCurr, pTestFile->cbFileMax));
258
259	/* Allocate data buffer. */
260	pTestTask->DataSeg.pvSeg = RTMemAlloc(pTestTask->DataSeg.cbSeg);
261	if (!pTestTask->DataSeg.pvSeg)
262	return VERR_NO_MEMORY;
263
264	/* Fill data into buffer. */
265	tstPDMACStressTestFileFillBuffer(pTestFile, pTestTask);
266
267	/* Engage */
268	rc = PDMR3AsyncCompletionEpWrite(pTestFile->hEndpoint, pTestTask->off,
269	&pTestTask->DataSeg, 1,
270	pTestTask->DataSeg.cbSeg,
271	pTestTask,
272	&pTestTask->hTask);
273
274	return rc;
275	}
276
277	static int tstPDMACStressTestFileRead(PPDMACTESTFILE pTestFile, PPDMACTESTFILETASK pTestTask)
278	{
279	int rc = VINF_SUCCESS;
280
281	Assert(!pTestTask->fActive);
282
283	pTestTask->fActive = true;
284	pTestTask->fWrite = false;
285	pTestTask->DataSeg.cbSeg = RTRandU32Ex(1, RT_MIN(pTestFile->cbFileCurr, TASK_TRANSFER_SIZE_MAX));
286
287	AssertMsg(pTestFile->cbFileCurr >= pTestTask->DataSeg.cbSeg, ("Impossible\n"));
288	pTestTask->off = RTRandU64Ex(0, pTestFile->cbFileCurr - pTestTask->DataSeg.cbSeg);
289
290	/* Allocate data buffer. */
291	pTestTask->DataSeg.pvSeg = RTMemAlloc(pTestTask->DataSeg.cbSeg);
292	if (!pTestTask->DataSeg.pvSeg)
293	return VERR_NO_MEMORY;
294
295	/* Engage */
296	rc = PDMR3AsyncCompletionEpRead(pTestFile->hEndpoint, pTestTask->off,
297	&pTestTask->DataSeg, 1,
298	pTestTask->DataSeg.cbSeg,
299	pTestTask,
300	&pTestTask->hTask);
301
302	return rc;
303	}
304
305	/**
306	* Returns true with the given chance in percent.
307	*
308	* @returns true or false
309	* @param iPercentage The percentage of the chance to return true.
310	*/
311	static bool tstPDMACTestIsTrue(int iPercentage)
312	{
313	int uRnd = RTRandU32Ex(0, 100);
314
315	return (uRnd < iPercentage); /* This should be enough for our purpose */
316	}
317
318	static int tstPDMACTestFileThread(PVM pVM, PPDMTHREAD pThread)
319	{
320	PPDMACTESTFILE pTestFile = (PPDMACTESTFILE)pThread->pvUser;
321	int iWriteChance = 100; /* Chance to get a write task in percent. */
322	uint32_t cTasksStarted = 0;
323	int rc = VINF_SUCCESS;
324
325	if (pThread->enmState == PDMTHREADSTATE_INITIALIZING)
326	return VINF_SUCCESS;
327
328	while (pTestFile->fRunning)
329	{
330	unsigned iTaskCurr = 0;
331
332
333	/* Fill all tasks */
334	while ( (pTestFile->cTasksActiveCurr < pTestFile->cTasksActiveMax)
335	&& (iTaskCurr < pTestFile->cTasksActiveMax))
336	{
337	PPDMACTESTFILETASK pTask = &pTestFile->paTasks[iTaskCurr];
338
339	if (!pTask->fActive)
340	{
341	/* Read or write task? */
342	bool fWrite = tstPDMACTestIsTrue(iWriteChance);
343
344	ASMAtomicIncU32(&pTestFile->cTasksActiveCurr);
345
346	if (fWrite)
347	rc = tstPDMACStressTestFileWrite(pTestFile, pTask);
348	else
349	rc = tstPDMACStressTestFileRead(pTestFile, pTask);
350
351	AssertRC(rc);
352
353	cTasksStarted++;
354	}
355
356	iTaskCurr++;
357	}
358
359	/*
360	* Recalc write chance. The bigger the file the lower the chance to have a write.
361	* The minimum chance is 33 percent.
362	*/
363	iWriteChance = 100 - (int)(((float)100.0 / pTestFile->cbFileMax) * (float)pTestFile->cbFileCurr);
364	iWriteChance = RT_MAX(33, iWriteChance);
365
366	/* Wait a random amount of time. (1ms - 100ms) */
367	RTThreadSleep(RTRandU32Ex(1, 100));
368	}
369
370	/* Wait for the rest to complete. */
371	while (pTestFile->cTasksActiveCurr)
372	RTThreadSleep(250);
373
374	RTPrintf("Thread exiting: processed %u tasks\n", cTasksStarted);
375	return rc;
376	}
377
378	static void tstPDMACStressTestFileTaskCompleted(PVM pVM, void pvUser, void pvUser2)
379	{
380	PPDMACTESTFILE pTestFile = (PPDMACTESTFILE)pvUser2;
381	PPDMACTESTFILETASK pTestTask = (PPDMACTESTFILETASK)pvUser;
382
383	if (pTestTask->fWrite)
384	{
385	/* @todo Do something sensible here. */
386	}
387	else
388	{
389	tstPDMACStressTestFileVerify(pTestFile, pTestTask); /* Will assert if it fails */
390	}
391
392	RTMemFree(pTestTask->DataSeg.pvSeg);
393	pTestTask->fActive = false;
394	AssertMsg(pTestFile->cTasksActiveCurr > 0, ("Trying to complete a non active task\n"));
395	ASMAtomicDecU32(&pTestFile->cTasksActiveCurr);
396	}
397
398	/**
399	* Sets up a test file creating the I/O thread.
400	*
401	* @returns VBox status code.
402	* @param pVM Pointer to the shared VM instance structure.
403	* @param pTestFile Pointer to the uninitialized test file structure.
404	* @param iTestId Unique test id.
405	*/
406	static int tstPDMACStressTestFileOpen(PVM pVM, PPDMACTESTFILE pTestFile, unsigned iTestId)
407	{
408	int rc = VERR_NO_MEMORY;
409
410	/* Size is a multiple of 512 */
411	pTestFile->cbFileMax = RTRandU64Ex(FILE_SIZE_MIN, FILE_SIZE_MAX) & ~(511UL);
412	pTestFile->cbFileCurr = 0;
413	pTestFile->cbFileSegment = RTRandU32Ex(SEGMENT_SIZE_MIN, RT_MIN(pTestFile->cbFileMax, SEGMENT_SIZE_MAX)) & ~((size_t)511);
414
415	Assert(pTestFile->cbFileMax >= pTestFile->cbFileSegment);
416
417	/* Set up the segments array. */
418	pTestFile->cSegments = pTestFile->cbFileMax / pTestFile->cbFileSegment;
419	pTestFile->cSegments += ((pTestFile->cbFileMax % pTestFile->cbFileSegment) > 0) ? 1 : 0;
420
421	pTestFile->paSegs = (PPDMACTESTFILESEG)RTMemAllocZ(pTestFile->cSegments * sizeof(PDMACTESTFILESEG));
422	if (pTestFile->paSegs)
423	{
424	/* Init the segments */
425	for (unsigned i = 0; i < pTestFile->cSegments; i++)
426	{
427	PPDMACTESTFILESEG pSeg = &pTestFile->paSegs[i];
428
429	pSeg->off = (RTFOFF)i * pTestFile->cbFileSegment;
430	pSeg->cbSegment = pTestFile->cbFileSegment;
431
432	/* Let the buffer point to a random position in the test pattern. */
433	uint32_t offTestPattern = RTRandU64Ex(0, g_cbTestPattern - pSeg->cbSegment);
434
435	pSeg->pbData = g_pbTestPattern + offTestPattern;
436	}
437
438	/* Init task array. */
439	pTestFile->cTasksActiveMax = RTRandU32Ex(1, TASK_ACTIVE_MAX);
440	pTestFile->paTasks = (PPDMACTESTFILETASK)RTMemAllocZ(pTestFile->cTasksActiveMax * sizeof(PDMACTESTFILETASK));
441	if (pTestFile->paTasks)
442	{
443	/* Create the template */
444	char szDesc[256];
445
446	RTStrPrintf(szDesc, sizeof(szDesc), "Template-%d", iTestId);
447	rc = PDMR3AsyncCompletionTemplateCreateInternal(pVM, &pTestFile->pTemplate, tstPDMACStressTestFileTaskCompleted, pTestFile, szDesc);
448	if (RT_SUCCESS(rc))
449	{
450	/* Open the endpoint now. Because async completion endpoints cannot create files we have to do it before. */
451	char szFile[RTPATH_MAX];
452
453	RTStrPrintf(szFile, sizeof(szFile), "tstPDMAsyncCompletionStress-%d.tmp", iTestId);
454
455	RTFILE FileTmp;
456	rc = RTFileOpen(&FileTmp, szFile, RTFILE_O_READWRITE \| RTFILE_O_CREATE \| RTFILE_O_DENY_NONE);
457	if (RT_SUCCESS(rc))
458	{
459	RTFileClose(FileTmp);
460
461	rc = PDMR3AsyncCompletionEpCreateForFile(&pTestFile->hEndpoint, szFile, PDMACEP_FILE_FLAGS_CACHING, pTestFile->pTemplate);
462	if (RT_SUCCESS(rc))
463	{
464	char szThreadDesc[256];
465
466	pTestFile->fRunning = true;
467
468	/* Create the thread creating the I/O for the given file. */
469	RTStrPrintf(szThreadDesc, sizeof(szThreadDesc), "PDMACThread-%d", iTestId);
470	rc = PDMR3ThreadCreate(pVM, &pTestFile->hThread, pTestFile, tstPDMACTestFileThread,
471	NULL, 0, RTTHREADTYPE_IO, szThreadDesc);
472	if (RT_SUCCESS(rc))
473	{
474	rc = PDMR3ThreadResume(pTestFile->hThread);
475	AssertRC(rc);
476
477	RTPrintf(TESTCASE ": Created test file %s cbFileMax=%llu cbFileSegment=%u cSegments=%u cTasksActiveMax=%u\n",
478	szFile, pTestFile->cbFileMax, pTestFile->cbFileSegment, pTestFile->cSegments, pTestFile->cTasksActiveMax);
479	return VINF_SUCCESS;
480	}
481
482	PDMR3AsyncCompletionEpClose(pTestFile->hEndpoint);
483	}
484
485	RTFileDelete(szFile);
486	}
487
488	PDMR3AsyncCompletionTemplateDestroy(pTestFile->pTemplate);
489	}
490
491	RTMemFree(pTestFile->paTasks);
492	}
493	else
494	rc = VERR_NO_MEMORY;
495
496	RTMemFree(pTestFile->paSegs);
497	}
498	else
499	rc = VERR_NO_MEMORY;
500
501	RTPrintf(TESTCASE ": Opening test file with id %d failed rc=%Rrc\n", iTestId, rc);
502
503	return rc;
504	}
505
506	/**
507	* Closes a test file.
508	*
509	* @returns nothing.
510	* @param pTestFile Pointer to the test file.
511	*/
512	static void tstPDMACStressTestFileClose(PPDMACTESTFILE pTestFile)
513	{
514	int rcThread;
515	int rc;
516
517	RTPrintf("Terminating I/O thread, please wait...\n");
518
519	/* Let the thread know that it should terminate. */
520	pTestFile->fRunning = false;
521
522	/* Wait for the thread to terminate. */
523	rc = PDMR3ThreadDestroy(pTestFile->hThread, &rcThread);
524
525	RTPrintf("Thread terminated with status code rc=%Rrc\n", rcThread);
526
527	/* Free resources */
528	RTMemFree(pTestFile->paTasks);
529	RTMemFree(pTestFile->paSegs);
530	PDMR3AsyncCompletionEpClose(pTestFile->hEndpoint);
531	PDMR3AsyncCompletionTemplateDestroy(pTestFile->pTemplate);
532	}
533
534	/**
535	* Inits the test pattern.
536	*
537	* @returns VBox status code.
538	*/
539	static int tstPDMACStressTestPatternInit(void)
540	{
541	RTPrintf(TESTCASE ": Creating test pattern. Please wait...\n");
542	g_cbTestPattern = TEST_PATTERN_SIZE;
543	g_pbTestPattern = (uint8_t *)RTMemAlloc(g_cbTestPattern);
544	if (!g_pbTestPattern)
545	return VERR_NO_MEMORY;
546
547	RTRandBytes(g_pbTestPattern, g_cbTestPattern);
548	return VINF_SUCCESS;
549	}
550
551	static void tstPDMACStressTestPatternDestroy(void)
552	{
553	RTPrintf(TESTCASE ": Destroying test pattern\n");
554	RTMemFree(g_pbTestPattern);
555	}
556
557	int main(int argc, char *argv[])
558	{
559	int rcRet = 0; /* error count */
560	int rc = VINF_SUCCESS;
561
562	RTR3InitAndSUPLib();
563
564	PVM pVM;
565	rc = VMR3Create(1, NULL, NULL, NULL, NULL, &pVM);
566	if (RT_SUCCESS(rc))
567	{
568	/*
569	* Little hack to avoid the VM_ASSERT_EMT assertion.
570	*/
571	RTTlsSet(pVM->pUVM->vm.s.idxTLS, &pVM->pUVM->aCpus[0]);
572	pVM->pUVM->aCpus[0].pUVM = pVM->pUVM;
573	pVM->pUVM->aCpus[0].vm.s.NativeThreadEMT = RTThreadNativeSelf();
574
575	rc = tstPDMACStressTestPatternInit();
576	if (RT_SUCCESS(rc))
577	{
578	unsigned cFilesOpened = 0;
579
580	/* Open the endpoints. */
581	for (cFilesOpened = 0; cFilesOpened < NR_OPEN_ENDPOINTS; cFilesOpened++)
582	{
583	rc = tstPDMACStressTestFileOpen(pVM, &g_aTestFiles[cFilesOpened], cFilesOpened);
584	if (RT_FAILURE(rc))
585	break;
586	}
587
588	if (RT_SUCCESS(rc))
589	{
590	/* Tests are running now. */
591	RTPrintf(TESTCASE ": Successfully opened all files. Running tests forever now or until an error is hit :)\n");
592	RTThreadSleep(RT_INDEFINITE_WAIT);
593	}
594
595	/* Close opened endpoints. */
596	for (unsigned i = 0; i < cFilesOpened; i++)
597	tstPDMACStressTestFileClose(&g_aTestFiles[i]);
598
599	tstPDMACStressTestPatternDestroy();
600	}
601	else
602	{
603	RTPrintf(TESTCASE ": failed to init test pattern!! rc=%Rrc\n", rc);
604	rcRet++;
605	}
606
607	rc = VMR3Destroy(pVM);
608	AssertMsg(rc == VINF_SUCCESS, ("%s: Destroying VM failed rc=%Rrc!!\n", __FUNCTION__, rc));
609	}
610	else
611	{
612	RTPrintf(TESTCASE ": failed to create VM!! rc=%Rrc\n", rc);
613	rcRet++;
614	}
615
616	return rcRet;
617	}
618

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source: vbox/trunk/src/VBox/VMM/testcase/tstPDMAsyncCompletionStress.cpp@ 24181

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