tstRTR0Timer.cpp@ 93115

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1	/* $Id: tstRTR0Timer.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* IPRT R0 Testcase - Timers.
4	*/
5
6	/*
7	* Copyright (C) 2009-2022 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#include <iprt/timer.h>
32
33	#include <iprt/asm.h>
34	#include <iprt/asm-amd64-x86.h>
35	#include <iprt/cpuset.h>
36	#include <iprt/err.h>
37	#include <iprt/mem.h>
38	#include <iprt/mp.h>
39	#include <iprt/param.h>
40	#include <iprt/string.h>
41	#include <iprt/thread.h>
42	#include <iprt/time.h>
43	#include <VBox/sup.h>
44	#include "tstRTR0Timer.h"
45	#include "tstRTR0Common.h"
46
47
48	/*********************************************************************************************************************************
49	* Structures and Typedefs *
50	*********************************************************************************************************************************/
51	typedef struct
52	{
53	/** Array of nano second timestamp of the first few shots. */
54	uint64_t volatile aShotNsTSes[10];
55	/** The number of shots. */
56	uint32_t volatile cShots;
57	/** The shot at which action is to be taken. */
58	uint32_t iActionShot;
59	/** The RC of whatever operation performed in the handler. */
60	int volatile rc;
61	/** Set if it's a periodic test. */
62	bool fPeriodic;
63	/** Test specific stuff. */
64	union
65	{
66	/** tstRTR0TimerCallbackU32ChangeInterval parameters. */
67	struct
68	{
69	/** The interval change step. */
70	uint32_t cNsChangeStep;
71	/** The current timer interval. */
72	uint32_t cNsCurInterval;
73	/** The minimum interval. */
74	uint32_t cNsMinInterval;
75	/** The maximum interval. */
76	uint32_t cNsMaxInterval;
77	/** Direction flag; false = decrement, true = increment. */
78	bool fDirection;
79	/** The number of steps between each change. */
80	uint8_t cStepsBetween;
81	} ChgInt;
82	/** tstRTR0TimerCallbackSpecific parameters. */
83	struct
84	{
85	/** The expected CPU. */
86	RTCPUID idCpu;
87	/** Set if this failed. */
88	bool fFailed;
89	} Specific;
90	} u;
91	} TSTRTR0TIMERS1;
92	typedef TSTRTR0TIMERS1 *PTSTRTR0TIMERS1;
93
94
95	/**
96	* Per cpu state for an omni timer test.
97	*/
98	typedef struct TSTRTR0TIMEROMNI1
99	{
100	/** When we started receiving timer callbacks on this CPU. */
101	uint64_t u64Start;
102	/** When we received the last tick on this timer. */
103	uint64_t u64Last;
104	/** The number of ticks received on this CPU. */
105	uint32_t volatile cTicks;
106	uint32_t u32Padding;
107	} TSTRTR0TIMEROMNI1;
108	typedef TSTRTR0TIMEROMNI1 *PTSTRTR0TIMEROMNI1;
109
110
111	/*********************************************************************************************************************************
112	* Global Variables *
113	*********************************************************************************************************************************/
114	/**
115	* Latency data.
116	*/
117	static struct TSTRTR0TIMEROMNILATENCY
118	{
119	/** The number of samples. */
120	volatile uint32_t cSamples;
121	uint32_t auPadding[3];
122	struct
123	{
124	uint64_t uTsc;
125	uint64_t uNanoTs;
126	} aSamples[4096];
127	} g_aOmniLatency[16];
128
129
130
131
132	/**
133	* Callback for the omni timer latency test, adds a sample to g_aOmniLatency.
134	*
135	* @param pTimer The timer.
136	* @param iTick The current tick.
137	* @param pvUser The user argument.
138	*/
139	static DECLCALLBACK(void) tstRTR0TimerCallbackLatencyOmni(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
140	{
141	RTCPUID idCpu = RTMpCpuId();
142	uint32_t iCpu = RTMpCpuIdToSetIndex(idCpu);
143	NOREF(pTimer); NOREF(pvUser); NOREF(iTick);
144
145	//RTR0TESTR0_CHECK_MSG(iCpu < RT_ELEMENTS(g_aOmniLatency), ("iCpu=%d idCpu=%u\n", iCpu, idCpu));
146	if (iCpu < RT_ELEMENTS(g_aOmniLatency))
147	{
148	uint32_t iSample = g_aOmniLatency[iCpu].cSamples;
149	if (iSample < RT_ELEMENTS(g_aOmniLatency[iCpu].aSamples))
150	{
151	g_aOmniLatency[iCpu].aSamples[iSample].uTsc = ASMReadTSC();
152	g_aOmniLatency[iCpu].aSamples[iSample].uNanoTs = RTTimeSystemNanoTS();
153	g_aOmniLatency[iCpu].cSamples = iSample + 1;
154	}
155	}
156	}
157
158
159	/**
160	* Callback which increments a 32-bit counter.
161	*
162	* @param pTimer The timer.
163	* @param iTick The current tick.
164	* @param pvUser The user argument.
165	*/
166	static DECLCALLBACK(void) tstRTR0TimerCallbackOmni(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
167	{
168	PTSTRTR0TIMEROMNI1 paStates = (PTSTRTR0TIMEROMNI1)pvUser;
169	RTCPUID idCpu = RTMpCpuId();
170	uint32_t iCpu = RTMpCpuIdToSetIndex(idCpu);
171	NOREF(pTimer);
172
173	RTR0TESTR0_CHECK_MSG(iCpu < RTCPUSET_MAX_CPUS, ("iCpu=%d idCpu=%u\n", iCpu, idCpu));
174	if (iCpu < RTCPUSET_MAX_CPUS)
175	{
176	uint32_t iCountedTick = ASMAtomicIncU32(&paStates[iCpu].cTicks);
177	RTR0TESTR0_CHECK_MSG(iCountedTick == iTick,
178	("iCountedTick=%u iTick=%u iCpu=%d idCpu=%u\n", iCountedTick, iTick, iCpu, idCpu));
179	paStates[iCpu].u64Last = RTTimeSystemNanoTS();
180	if (!paStates[iCpu].u64Start)
181	{
182	paStates[iCpu].u64Start = paStates[iCpu].u64Last;
183	RTR0TESTR0_CHECK_MSG(iCountedTick == 1, ("iCountedTick=%u iCpu=%d idCpu=%u\n", iCountedTick, iCpu, idCpu));
184	}
185	}
186	}
187
188
189	/**
190	* Callback for one-shot resolution detection.
191	*
192	* @param pTimer The timer.
193	* @param iTick The current tick.
194	* @param pvUser Points to variable with the start TS, update to time
195	* elapsed till this call.
196	*/
197	static DECLCALLBACK(void) tstRTR0TimerCallbackOneShotElapsed(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
198	{
199	RT_NOREF(pTimer, iTick);
200	uint64_t puNanoTS = (uint64_t )pvUser;
201	puNanoTS = RTTimeSystemNanoTS() - puNanoTS;
202	}
203
204
205	/**
206	* Callback which increments a 32-bit counter.
207	*
208	* @param pTimer The timer.
209	* @param iTick The current tick.
210	* @param pvUser The user argument.
211	*/
212	static DECLCALLBACK(void) tstRTR0TimerCallbackSpecific(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
213	{
214	PTSTRTR0TIMERS1 pState = (PTSTRTR0TIMERS1)pvUser;
215	uint32_t iShot = ASMAtomicIncU32(&pState->cShots);
216	NOREF(pTimer);
217
218	if (iShot <= RT_ELEMENTS(pState->aShotNsTSes))
219	pState->aShotNsTSes[iShot - 1] = RTTimeSystemNanoTS();
220
221	RTCPUID idCpu = RTMpCpuId();
222	if (pState->u.Specific.idCpu != idCpu)
223	pState->u.Specific.fFailed = true;
224	RTR0TESTR0_CHECK_MSG(pState->u.Specific.idCpu == idCpu, ("idCpu=%u, expected %u\n", idCpu, pState->u.Specific.idCpu));
225
226	if (pState->fPeriodic)
227	RTR0TESTR0_CHECK_MSG(iShot == iTick, ("iShot=%u iTick=%u\n", iShot, iTick));
228	else
229	RTR0TESTR0_CHECK_MSG(iTick == 1, ("iShot=%u iTick=%u\n", iShot, iTick));
230	}
231
232
233	/**
234	* Callback which changes the interval at each invocation.
235	*
236	* The changes are governed by TSTRTR0TIMERS1::ChangeInterval. The callback
237	* calls RTTimerStop at iActionShot.
238	*
239	* @param pTimer The timer.
240	* @param iTick The current tick.
241	* @param pvUser The user argument.
242	*/
243	static DECLCALLBACK(void) tstRTR0TimerCallbackChangeInterval(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
244	{
245	PTSTRTR0TIMERS1 pState = (PTSTRTR0TIMERS1)pvUser;
246	uint32_t iShot = ASMAtomicIncU32(&pState->cShots) - 1;
247
248	if (iShot < RT_ELEMENTS(pState->aShotNsTSes))
249	pState->aShotNsTSes[iShot] = RTTimeSystemNanoTS();
250	if (pState->fPeriodic)
251	RTR0TESTR0_CHECK_MSG(iShot + 1 == iTick, ("iShot=%u iTick=%u\n", iShot, iTick));
252	else
253	RTR0TESTR0_CHECK_MSG(iTick == 1, ("iShot=%u iTick=%u\n", iShot, iTick));
254
255	if (!(iShot % pState->u.ChgInt.cStepsBetween))
256	{
257	if (pState->u.ChgInt.fDirection)
258	{
259	pState->u.ChgInt.cNsCurInterval += pState->u.ChgInt.cNsChangeStep;
260	if ( pState->u.ChgInt.cNsCurInterval > pState->u.ChgInt.cNsMaxInterval
261	\|\| pState->u.ChgInt.cNsCurInterval < pState->u.ChgInt.cNsMinInterval
262	\|\| !pState->u.ChgInt.cNsCurInterval)
263	{
264	pState->u.ChgInt.cNsCurInterval = pState->u.ChgInt.cNsMaxInterval;
265	pState->u.ChgInt.fDirection = false;
266	}
267	}
268	else
269	{
270	pState->u.ChgInt.cNsCurInterval -= pState->u.ChgInt.cNsChangeStep;
271	if ( pState->u.ChgInt.cNsCurInterval < pState->u.ChgInt.cNsMinInterval
272	\|\| pState->u.ChgInt.cNsCurInterval > pState->u.ChgInt.cNsMaxInterval
273	\|\| pState->u.ChgInt.cNsCurInterval)
274	{
275	pState->u.ChgInt.cNsCurInterval = pState->u.ChgInt.cNsMinInterval;
276	pState->u.ChgInt.fDirection = true;
277	}
278	}
279
280	RTR0TESTR0_CHECK_RC(RTTimerChangeInterval(pTimer, pState->u.ChgInt.cNsCurInterval), VINF_SUCCESS);
281	}
282
283	if (iShot == pState->iActionShot)
284	RTR0TESTR0_CHECK_RC(pState->rc = RTTimerStop(pTimer), VINF_SUCCESS);
285	}
286
287
288	/**
289	* Callback which increments destroy the timer when it fires.
290	*
291	* @param pTimer The timer.
292	* @param iTick The current tick.
293	* @param pvUser The user argument.
294	*/
295	static DECLCALLBACK(void) tstRTR0TimerCallbackDestroyOnce(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
296	{
297	PTSTRTR0TIMERS1 pState = (PTSTRTR0TIMERS1)pvUser;
298	uint32_t iShot = ASMAtomicIncU32(&pState->cShots);
299
300	if (iShot <= RT_ELEMENTS(pState->aShotNsTSes))
301	pState->aShotNsTSes[iShot - 1] = RTTimeSystemNanoTS();
302	if (pState->fPeriodic)
303	RTR0TESTR0_CHECK_MSG(iShot == iTick, ("iShot=%u iTick=%u\n", iShot, iTick));
304	else
305	RTR0TESTR0_CHECK_MSG(iTick == 1, ("iShot=%u iTick=%u\n", iShot, iTick));
306
307	if (iShot == pState->iActionShot + 1)
308	RTR0TESTR0_CHECK_RC(pState->rc = RTTimerDestroy(pTimer), VINF_SUCCESS);
309	}
310
311
312	/**
313	* Callback which increments restarts a timer once.
314	*
315	* @param pTimer The timer.
316	* @param iTick The current tick.
317	* @param pvUser The user argument.
318	*/
319	static DECLCALLBACK(void) tstRTR0TimerCallbackRestartOnce(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
320	{
321	PTSTRTR0TIMERS1 pState = (PTSTRTR0TIMERS1)pvUser;
322	uint32_t iShot = ASMAtomicIncU32(&pState->cShots);
323
324	if (iShot <= RT_ELEMENTS(pState->aShotNsTSes))
325	pState->aShotNsTSes[iShot - 1] = RTTimeSystemNanoTS();
326	if (pState->fPeriodic)
327	RTR0TESTR0_CHECK_MSG(iShot == iTick, ("iShot=%u iTick=%u\n", iShot, iTick));
328	else
329	RTR0TESTR0_CHECK_MSG(iTick == 1, ("iShot=%u iTick=%u\n", iShot, iTick));
330
331	if (iShot == pState->iActionShot + 1)
332	RTR0TESTR0_CHECK_RC(pState->rc = RTTimerStart(pTimer, 10000000 /* 10ms */), VINF_SUCCESS);
333	}
334
335
336	/**
337	* Callback which increments a 32-bit counter.
338	*
339	* @param pTimer The timer.
340	* @param iTick The current tick.
341	* @param pvUser The user argument.
342	*/
343	static DECLCALLBACK(void) tstRTR0TimerCallbackU32Counter(PRTTIMER pTimer, void *pvUser, uint64_t iTick)
344	{
345	PTSTRTR0TIMERS1 pState = (PTSTRTR0TIMERS1)pvUser;
346	uint32_t iShot = ASMAtomicIncU32(&pState->cShots);
347	NOREF(pTimer);
348
349	if (iShot <= RT_ELEMENTS(pState->aShotNsTSes))
350	pState->aShotNsTSes[iShot - 1] = RTTimeSystemNanoTS();
351	if (pState->fPeriodic)
352	RTR0TESTR0_CHECK_MSG(iShot == iTick, ("iShot=%u iTick=%u\n", iShot, iTick));
353	else
354	RTR0TESTR0_CHECK_MSG(iTick == 1, ("iShot=%u iTick=%u\n", iShot, iTick));
355	}
356
357
358	#ifdef SOME_UNUSED_FUNCTION
359	/**
360	* Checks that the interval between two timer shots are within the specified
361	* range.
362	*
363	* @returns 0 if ok, 1 if bad.
364	* @param iShot The shot number (for bitching).
365	* @param uPrevTS The time stamp of the previous shot (ns).
366	* @param uThisTS The timer stamp of this shot (ns).
367	* @param uMin The minimum interval (ns).
368	* @param uMax The maximum interval (ns).
369	*/
370	static int tstRTR0TimerCheckShotInterval(uint32_t iShot, uint64_t uPrevTS, uint64_t uThisTS, uint32_t uMin, uint32_t uMax)
371	{
372	uint64_t uDelta = uThisTS - uPrevTS;
373	RTR0TESTR0_CHECK_MSG_RET(uDelta >= uMin, ("iShot=%u uDelta=%lld uMin=%u\n", iShot, uDelta, uMin), 1);
374	RTR0TESTR0_CHECK_MSG_RET(uDelta <= uMax, ("iShot=%u uDelta=%lld uMax=%u\n", iShot, uDelta, uMax), 1);
375	return 0;
376	}
377	#endif
378
379
380	/**
381	* Checks that the interval between timer shots are within a certain range.
382	*
383	* @returns Number of violations (i.e. 0 is ok).
384	* @param pState The state.
385	* @param uStartNsTS The start time stamp (ns).
386	* @param uMin The minimum interval (ns).
387	* @param uMax The maximum interval (ns).
388	*/
389	static int tstRTR0TimerCheckShotIntervals(PTSTRTR0TIMERS1 pState, uint64_t uStartNsTS, uint32_t uMin, uint32_t uMax)
390	{
391	uint64_t uMaxDelta = 0;
392	uint64_t uMinDelta = UINT64_MAX;
393	uint32_t cBadShots = 0;
394	uint32_t cShots = pState->cShots;
395	uint64_t uPrevTS = uStartNsTS;
396	for (uint32_t iShot = 0; iShot < cShots; iShot++)
397	{
398	uint64_t uThisTS = pState->aShotNsTSes[iShot];
399	uint64_t uDelta = uThisTS - uPrevTS;
400	if (uDelta > uMaxDelta)
401	uMaxDelta = uDelta;
402	if (uDelta < uMinDelta)
403	uMinDelta = uDelta;
404	cBadShots += !(uDelta >= uMin && uDelta <= uMax);
405
406	RTR0TESTR0_CHECK_MSG(uDelta >= uMin, ("iShot=%u uDelta=%lld uMin=%u\n", iShot, uDelta, uMin));
407	RTR0TESTR0_CHECK_MSG(uDelta <= uMax, ("iShot=%u uDelta=%lld uMax=%u\n", iShot, uDelta, uMax));
408
409	uPrevTS = uThisTS;
410	}
411
412	RTR0TestR0Info("uMaxDelta=%llu uMinDelta=%llu\n", uMaxDelta, uMinDelta);
413	return cBadShots;
414	}
415
416
417	/**
418	* Service request callback function.
419	*
420	* @returns VBox status code.
421	* @param pSession The caller's session.
422	* @param u64Arg 64-bit integer argument.
423	* @param pReqHdr The request header. Input / Output. Optional.
424	*/
425	DECLEXPORT(int) TSTRTR0TimerSrvReqHandler(PSUPDRVSESSION pSession, uint32_t uOperation,
426	uint64_t u64Arg, PSUPR0SERVICEREQHDR pReqHdr)
427	{
428	RTR0TESTR0_SRV_REQ_PROLOG_RET(pReqHdr);
429	NOREF(pSession);
430
431	/*
432	* Common parameter and state variables.
433	*/
434	uint32_t const cNsSysHz = RTTimerGetSystemGranularity();
435	uint32_t const cNsMaxHighResHz = 10000; /** @todo need API for this */
436	TSTRTR0TIMERS1 State;
437	if ( cNsSysHz < UINT32_C(1000)
438	\|\| cNsSysHz > UINT32_C(1000000000)
439	\|\| cNsMaxHighResHz < UINT32_C(1)
440	\|\| cNsMaxHighResHz > UINT32_C(1000000000))
441	{
442	RTR0TESTR0_CHECK_MSG(cNsSysHz > UINT32_C(1000) && cNsSysHz < UINT32_C(1000000000), ("%u", cNsSysHz));
443	RTR0TESTR0_CHECK_MSG(cNsMaxHighResHz > UINT32_C(1) && cNsMaxHighResHz < UINT32_C(1000000000), ("%u", cNsMaxHighResHz));
444	RTR0TESTR0_SRV_REQ_EPILOG(pReqHdr);
445	return VINF_SUCCESS;
446	}
447
448	/*
449	* The big switch.
450	*/
451	switch (uOperation)
452	{
453	RTR0TESTR0_IMPLEMENT_SANITY_CASES();
454	RTR0TESTR0_IMPLEMENT_DEFAULT_CASE(uOperation);
455
456	case TSTRTR0TIMER_ONE_SHOT_BASIC:
457	case TSTRTR0TIMER_ONE_SHOT_BASIC_HIRES:
458	{
459	/* Create a one-shot timer and take one shot. */
460	PRTTIMER pTimer;
461	uint32_t fFlags = TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0;
462	int rc = RTTimerCreateEx(&pTimer, 0, fFlags, tstRTR0TimerCallbackU32Counter, &State);
463	if (rc == VERR_NOT_SUPPORTED)
464	{
465	RTR0TestR0Info("one-shot timer are not supported, skipping\n");
466	RTR0TESTR0_SKIP();
467	break;
468	}
469	RTR0TESTR0_CHECK_RC_BREAK(rc, VINF_SUCCESS);
470
471	do /* break loop */
472	{
473	RT_ZERO(State); ASMAtomicWriteU32(&State.cShots, State.cShots);
474	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, 0), VINF_SUCCESS);
475	for (uint32_t i = 0; i < 1000 && !ASMAtomicUoReadU32(&State.cShots); i++)
476	RTThreadSleep(5);
477	RTR0TESTR0_CHECK_MSG_BREAK(ASMAtomicUoReadU32(&State.cShots) == 1, ("cShots=%u\n", State.cShots));
478
479	/* check that it is restartable. */
480	RT_ZERO(State); ASMAtomicWriteU32(&State.cShots, State.cShots);
481	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, 0), VINF_SUCCESS);
482	for (uint32_t i = 0; i < 1000 && !ASMAtomicUoReadU32(&State.cShots); i++)
483	RTThreadSleep(5);
484	RTR0TESTR0_CHECK_MSG_BREAK(ASMAtomicUoReadU32(&State.cShots) == 1, ("cShots=%u\n", State.cShots));
485
486	/* check that it respects the timeout value and can be cancelled. */
487	RT_ZERO(State); ASMAtomicWriteU32(&State.cShots, State.cShots);
488	RTR0TESTR0_CHECK_RC(RTTimerStart(pTimer, 5*UINT64_C(1000000000)), VINF_SUCCESS);
489	RTR0TESTR0_CHECK_RC(RTTimerStop(pTimer), VINF_SUCCESS);
490	RTThreadSleep(1);
491	RTR0TESTR0_CHECK_MSG_BREAK(ASMAtomicUoReadU32(&State.cShots) == 0, ("cShots=%u\n", State.cShots));
492
493	/* Check some double starts and stops (shall not assert). */
494	RT_ZERO(State); ASMAtomicWriteU32(&State.cShots, State.cShots);
495	RTR0TESTR0_CHECK_RC(RTTimerStart(pTimer, 5*UINT64_C(1000000000)), VINF_SUCCESS);
496	RTR0TESTR0_CHECK_RC(RTTimerStart(pTimer, 0), VERR_TIMER_ACTIVE);
497	RTR0TESTR0_CHECK_RC(RTTimerStop(pTimer), VINF_SUCCESS);
498	RTR0TESTR0_CHECK_RC(RTTimerStop(pTimer), VERR_TIMER_SUSPENDED);
499	RTThreadSleep(1);
500	RTR0TESTR0_CHECK_MSG_BREAK(ASMAtomicUoReadU32(&State.cShots) == 0, ("cShots=%u\n", State.cShots));
501	} while (0);
502	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
503	RTR0TESTR0_CHECK_RC(RTTimerDestroy(NULL), VINF_SUCCESS);
504	break;
505	}
506
507	case TSTRTR0TIMER_ONE_SHOT_RESTART:
508	case TSTRTR0TIMER_ONE_SHOT_RESTART_HIRES:
509	{
510	#if !defined(RT_OS_SOLARIS) /* Not expected to work on all hosts. */
511	/* Create a one-shot timer and restart it in the callback handler. */
512	PRTTIMER pTimer;
513	uint32_t fFlags = TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0;
514	for (uint32_t iTest = 0; iTest < 2; iTest++)
515	{
516	int rc = RTTimerCreateEx(&pTimer, 0, fFlags, tstRTR0TimerCallbackRestartOnce, &State);
517	if (rc == VERR_NOT_SUPPORTED)
518	{
519	RTR0TestR0Info("one-shot timer are not supported, skipping\n");
520	RTR0TESTR0_SKIP();
521	break;
522	}
523	RTR0TESTR0_CHECK_RC_BREAK(rc, VINF_SUCCESS);
524
525	RT_ZERO(State);
526	State.iActionShot = 0;
527	ASMAtomicWriteU32(&State.cShots, State.cShots);
528	do /* break loop */
529	{
530	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, cNsSysHz * iTest), VINF_SUCCESS);
531	for (uint32_t i = 0; i < 1000 && ASMAtomicUoReadU32(&State.cShots) < 2; i++)
532	RTThreadSleep(5);
533	RTR0TESTR0_CHECK_MSG_BREAK(ASMAtomicUoReadU32(&State.cShots) == 2, ("cShots=%u\n", State.cShots));
534	} while (0);
535	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
536	}
537	#else
538	RTR0TestR0Info("restarting from callback not supported on this platform\n");
539	RTR0TESTR0_SKIP();
540	#endif
541	break;
542	}
543
544	case TSTRTR0TIMER_ONE_SHOT_DESTROY:
545	case TSTRTR0TIMER_ONE_SHOT_DESTROY_HIRES:
546	{
547	#if !defined(RT_OS_SOLARIS) && !defined(RT_OS_WINDOWS) /* Not expected to work on all hosts. */
548	/* Create a one-shot timer and destroy it in the callback handler. */
549	PRTTIMER pTimer;
550	uint32_t fFlags = TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0;
551	for (uint32_t iTest = 0; iTest < 2; iTest++)
552	{
553	int rc = RTTimerCreateEx(&pTimer, 0, fFlags, tstRTR0TimerCallbackDestroyOnce, &State);
554	if (rc == VERR_NOT_SUPPORTED)
555	{
556	RTR0TestR0Info("one-shot timer are not supported, skipping\n");
557	RTR0TESTR0_SKIP();
558	break;
559	}
560	RTR0TESTR0_CHECK_RC_BREAK(rc, VINF_SUCCESS);
561
562	RT_ZERO(State);
563	State.rc = VERR_IPE_UNINITIALIZED_STATUS;
564	State.iActionShot = 0;
565	ASMAtomicWriteU32(&State.cShots, State.cShots);
566	do /* break loop */
567	{
568	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, cNsSysHz * iTest), VINF_SUCCESS);
569	for (uint32_t i = 0; i < 1000 && (ASMAtomicUoReadU32(&State.cShots) < 1 \|\| State.rc == VERR_IPE_UNINITIALIZED_STATUS); i++)
570	RTThreadSleep(5);
571	RTR0TESTR0_CHECK_MSG_BREAK(ASMAtomicReadU32(&State.cShots) == 1, ("cShots=%u\n", State.cShots));
572	RTR0TESTR0_CHECK_MSG_BREAK(State.rc == VINF_SUCCESS, ("rc=%Rrc\n", State.rc));
573	} while (0);
574	if (RT_FAILURE(State.rc))
575	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
576	}
577	#else
578	RTR0TestR0Info("destroying from callback not supported on this platform\n");
579	RTR0TESTR0_SKIP();
580	#endif
581	break;
582	}
583
584	case TSTRTR0TIMER_ONE_SHOT_SPECIFIC:
585	case TSTRTR0TIMER_ONE_SHOT_SPECIFIC_HIRES:
586	{
587	PRTTIMER pTimer = NULL;
588	RTCPUSET OnlineSet;
589	RTMpGetOnlineSet(&OnlineSet);
590	for (uint32_t iCpu = 0; iCpu < RTCPUSET_MAX_CPUS; iCpu++)
591	if (RTCpuSetIsMemberByIndex(&OnlineSet, iCpu))
592	{
593	RT_ZERO(State);
594	State.iActionShot = 0;
595	State.rc = VINF_SUCCESS;
596	State.u.Specific.idCpu = RTMpCpuIdFromSetIndex(iCpu);
597	ASMAtomicWriteU32(&State.cShots, State.cShots);
598
599	uint32_t fFlags = TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0;
600	fFlags \|= RTTIMER_FLAGS_CPU(iCpu);
601	int rc = RTTimerCreateEx(&pTimer, 0, fFlags, tstRTR0TimerCallbackSpecific, &State);
602	if (rc == VERR_NOT_SUPPORTED)
603	{
604	RTR0TestR0Info("one-shot specific timer are not supported, skipping\n");
605	RTR0TESTR0_SKIP();
606	break;
607	}
608	RTR0TESTR0_CHECK_RC_BREAK(rc, VINF_SUCCESS);
609
610	for (uint32_t i = 0; i < 5 && !RTR0TestR0HaveErrors(); i++)
611	{
612	ASMAtomicWriteU32(&State.cShots, 0);
613	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, (i & 2 ? cNsSysHz : cNsSysHz / 2) * (i & 1)), VINF_SUCCESS);
614	uint64_t cNsElapsed = RTTimeSystemNanoTS();
615	for (uint32_t j = 0; j < 1000 && ASMAtomicUoReadU32(&State.cShots) < 1; j++)
616	RTThreadSleep(5);
617	cNsElapsed = RTTimeSystemNanoTS() - cNsElapsed;
618	RTR0TESTR0_CHECK_MSG_BREAK(ASMAtomicReadU32(&State.cShots) == 1,
619	("cShots=%u iCpu=%u i=%u iCurCpu=%u cNsElapsed=%'llu\n",
620	State.cShots, iCpu, i, RTMpCpuIdToSetIndex(RTMpCpuId()), cNsElapsed ));
621	RTR0TESTR0_CHECK_MSG_BREAK(State.rc == VINF_SUCCESS, ("rc=%Rrc\n", State.rc));
622	RTR0TESTR0_CHECK_MSG_BREAK(!State.u.Specific.fFailed, ("iCpu=%u i=%u\n", iCpu, i));
623	}
624
625	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
626	pTimer = NULL;
627	if (RTR0TestR0HaveErrors())
628	break;
629
630	RTMpGetOnlineSet(&OnlineSet);
631	}
632	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
633	break;
634	}
635
636	case TSTRTR0TIMER_ONE_SHOT_RESOLUTION:
637	case TSTRTR0TIMER_ONE_SHOT_RESOLUTION_HIRES:
638	{
639	/* Just create a timer and do a number of RTTimerStart with a small
640	interval and see how quickly it gets called. */
641	PRTTIMER pTimer;
642	uint32_t fFlags = TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0;
643	uint64_t volatile cNsElapsed = 0;
644	RTR0TESTR0_CHECK_RC_BREAK(RTTimerCreateEx(&pTimer, 0, fFlags, tstRTR0TimerCallbackOneShotElapsed, (void *)&cNsElapsed),
645	VINF_SUCCESS);
646
647	uint32_t cTotal = 0;
648	uint32_t cNsTotal = 0;
649	uint32_t cNsMin = UINT32_MAX;
650	uint32_t cNsMax = 0;
651	for (uint32_t i = 0; i < 200; i++)
652	{
653	cNsElapsed = RTTimeSystemNanoTS();
654	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, RT_NS_1US), VINF_SUCCESS);
655	RTThreadSleep(10);
656	cTotal += 1;
657	cNsTotal += cNsElapsed;
658	if (cNsMin > cNsElapsed)
659	cNsMin = cNsElapsed;
660	if (cNsMax < cNsElapsed)
661	cNsMax = cNsElapsed;
662	}
663	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
664	pTimer = NULL;
665	RTR0TestR0Info("nsMin=%u nsAvg=%u nsMax=%u cTotal=%u\n", cNsMin, cNsTotal / cTotal, cNsMax, cTotal);
666	break;
667	}
668
669	case TSTRTR0TIMER_PERIODIC_BASIC:
670	case TSTRTR0TIMER_PERIODIC_BASIC_HIRES:
671	{
672	/* Create a periodic timer running at 10 HZ. */
673	uint32_t const u10HzAsNs = RT_NS_1SEC / 10;
674	uint32_t const u10HzAsNsMin = u10HzAsNs - u10HzAsNs / 2;
675	uint32_t const u10HzAsNsMax = u10HzAsNs + u10HzAsNs / 2;
676	PRTTIMER pTimer;
677	uint32_t fFlags = TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0;
678	RTR0TESTR0_CHECK_RC_BREAK(RTTimerCreateEx(&pTimer, u10HzAsNs, fFlags, tstRTR0TimerCallbackU32Counter, &State),
679	VINF_SUCCESS);
680
681	for (uint32_t iTest = 0; iTest < 2; iTest++)
682	{
683	RT_ZERO(State);
684	State.fPeriodic = true;
685	ASMAtomicWriteU32(&State.cShots, State.cShots);
686
687	uint64_t uStartNsTS = RTTimeSystemNanoTS();
688	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, u10HzAsNs), VINF_SUCCESS);
689	for (uint32_t i = 0; i < 1000 && ASMAtomicUoReadU32(&State.cShots) < 10; i++)
690	RTThreadSleep(10);
691	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStop(pTimer), VINF_SUCCESS);
692	RTR0TESTR0_CHECK_MSG_BREAK(ASMAtomicUoReadU32(&State.cShots) == 10, ("cShots=%u\n", State.cShots));
693	if (tstRTR0TimerCheckShotIntervals(&State, uStartNsTS, u10HzAsNsMin, u10HzAsNsMax))
694	break;
695	RTThreadSleep(1); /** @todo RTTimerStop doesn't currently make sure the timer callback not is running
696	* before returning on windows, linux (low res) and possible other plaforms. */
697	}
698	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
699	RTR0TESTR0_CHECK_RC(RTTimerDestroy(NULL), VINF_SUCCESS);
700	break;
701	}
702
703	case TSTRTR0TIMER_PERIODIC_CSSD_LOOPS:
704	case TSTRTR0TIMER_PERIODIC_CSSD_LOOPS_HIRES:
705	{
706	/* create, start, stop & destroy high res timers a number of times. */
707	uint32_t fFlags = TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0;
708	for (uint32_t i = 0; i < 40; i++)
709	{
710	PRTTIMER pTimer;
711	RTR0TESTR0_CHECK_RC_BREAK(RTTimerCreateEx(&pTimer, cNsSysHz, fFlags, tstRTR0TimerCallbackU32Counter, &State),
712	VINF_SUCCESS);
713	for (uint32_t j = 0; j < 10; j++)
714	{
715	RT_ZERO(State);
716	State.fPeriodic = true;
717	ASMAtomicWriteU32(&State.cShots, State.cShots); /* ordered, necessary? */
718
719	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, i < 20 ? 0 : cNsSysHz), VINF_SUCCESS);
720	for (uint32_t k = 0; k < 1000 && ASMAtomicUoReadU32(&State.cShots) < 2; k++)
721	RTThreadSleep(1);
722	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStop(pTimer), VINF_SUCCESS);
723	RTThreadSleep(1); /** @todo RTTimerStop doesn't currently make sure the timer callback not is running
724	* before returning on windows, linux (low res) and possible other plaforms. */
725	}
726	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
727	}
728	break;
729	}
730
731	case TSTRTR0TIMER_PERIODIC_CHANGE_INTERVAL:
732	case TSTRTR0TIMER_PERIODIC_CHANGE_INTERVAL_HIRES:
733	{
734	/* Initialize the test parameters, using the u64Arg value for selecting variations. */
735	RT_ZERO(State);
736	State.cShots = 0;
737	State.rc = VERR_IPE_UNINITIALIZED_STATUS;
738	State.iActionShot = 42;
739	State.fPeriodic = true;
740	State.u.ChgInt.fDirection = !!(u64Arg & 1);
741	if (uOperation == TSTRTR0TIMER_PERIODIC_CHANGE_INTERVAL_HIRES)
742	{
743	State.u.ChgInt.cNsMaxInterval = RT_MAX(cNsMaxHighResHz * 10, 20000000); /* 10x / 20 ms */
744	State.u.ChgInt.cNsMinInterval = RT_MAX(cNsMaxHighResHz, 10000); /* min / 10 us */
745	}
746	else
747	{
748	State.u.ChgInt.cNsMaxInterval = cNsSysHz * 4;
749	State.u.ChgInt.cNsMinInterval = cNsSysHz;
750	}
751	State.u.ChgInt.cNsChangeStep = (State.u.ChgInt.cNsMaxInterval - State.u.ChgInt.cNsMinInterval) / 10;
752	State.u.ChgInt.cNsCurInterval = State.u.ChgInt.fDirection
753	? State.u.ChgInt.cNsMaxInterval : State.u.ChgInt.cNsMinInterval;
754	State.u.ChgInt.cStepsBetween = u64Arg & 4 ? 1 : 3;
755	RTR0TESTR0_CHECK_MSG_BREAK(State.u.ChgInt.cNsMinInterval > 1000, ("%u\n", State.u.ChgInt.cNsMinInterval));
756	RTR0TESTR0_CHECK_MSG_BREAK(State.u.ChgInt.cNsMaxInterval > State.u.ChgInt.cNsMinInterval, ("max=%u min=%u\n", State.u.ChgInt.cNsMaxInterval, State.u.ChgInt.cNsMinInterval));
757	ASMAtomicWriteU32(&State.cShots, State.cShots);
758
759	/* create the timer and check if RTTimerChangeInterval is supported. */
760	PRTTIMER pTimer;
761	uint32_t fFlags = TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0;
762	RTR0TESTR0_CHECK_RC_BREAK(RTTimerCreateEx(&pTimer, cNsSysHz, fFlags, tstRTR0TimerCallbackChangeInterval, &State),
763	VINF_SUCCESS);
764	int rc = RTTimerChangeInterval(pTimer, State.u.ChgInt.cNsMinInterval);
765	if (rc == VERR_NOT_SUPPORTED)
766	{
767	RTR0TestR0Info("RTTimerChangeInterval not supported, skipped");
768	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
769	RTR0TESTR0_SKIP();
770	break;
771	}
772
773	/* do the test. */
774	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, u64Arg & 2 ? State.u.ChgInt.cNsCurInterval : 0), VINF_SUCCESS);
775	for (uint32_t k = 0;
776	k < 1000
777	&& ASMAtomicReadU32(&State.cShots) <= State.iActionShot
778	&& State.rc == VERR_IPE_UNINITIALIZED_STATUS;
779	k++)
780	RTThreadSleep(10);
781
782	rc = RTTimerStop(pTimer);
783	RTR0TESTR0_CHECK_MSG_BREAK(rc == VERR_TIMER_SUSPENDED \|\| rc == VINF_SUCCESS, ("rc = %Rrc (RTTimerStop)\n", rc));
784	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
785	break;
786	}
787
788	case TSTRTR0TIMER_PERIODIC_SPECIFIC:
789	case TSTRTR0TIMER_PERIODIC_SPECIFIC_HIRES:
790	{
791	PRTTIMER pTimer = NULL;
792	RTCPUSET OnlineSet;
793	RTMpGetOnlineSet(&OnlineSet);
794	for (uint32_t iCpu = 0; iCpu < RTCPUSET_MAX_CPUS; iCpu++)
795	if (RTCpuSetIsMemberByIndex(&OnlineSet, iCpu))
796	{
797	RT_ZERO(State);
798	State.iActionShot = 0;
799	State.rc = VINF_SUCCESS;
800	State.fPeriodic = true;
801	State.u.Specific.idCpu = RTMpCpuIdFromSetIndex(iCpu);
802	ASMAtomicWriteU32(&State.cShots, State.cShots);
803
804	uint32_t fFlags = TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0;
805	fFlags \|= RTTIMER_FLAGS_CPU(iCpu);
806	int rc = RTTimerCreateEx(&pTimer, cNsSysHz, fFlags, tstRTR0TimerCallbackSpecific, &State);
807	if (rc == VERR_NOT_SUPPORTED)
808	{
809	RTR0TestR0Info("specific timer are not supported, skipping\n");
810	RTR0TESTR0_SKIP();
811	break;
812	}
813	RTR0TESTR0_CHECK_RC_BREAK(rc, VINF_SUCCESS);
814
815	for (uint32_t i = 0; i < 3 && !RTR0TestR0HaveErrors(); i++)
816	{
817	ASMAtomicWriteU32(&State.cShots, 0);
818	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, (i & 2 ? cNsSysHz : cNsSysHz / 2) * (i & 1)), VINF_SUCCESS);
819	uint64_t cNsElapsed = RTTimeSystemNanoTS();
820	for (uint32_t j = 0; j < 1000 && ASMAtomicUoReadU32(&State.cShots) < 8; j++)
821	RTThreadSleep(5);
822	cNsElapsed = RTTimeSystemNanoTS() - cNsElapsed;
823	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStop(pTimer), VINF_SUCCESS);
824	RTR0TESTR0_CHECK_MSG_BREAK(ASMAtomicReadU32(&State.cShots) > 5,
825	("cShots=%u iCpu=%u i=%u iCurCpu=%u cNsElapsed=%'llu\n",
826	State.cShots, iCpu, i, RTMpCpuIdToSetIndex(RTMpCpuId()), cNsElapsed));
827	RTThreadSleep(1); /** @todo RTTimerStop doesn't currently make sure the timer callback not is running
828	* before returning on windows, linux (low res) and possible other plaforms. */
829	RTR0TESTR0_CHECK_MSG_BREAK(State.rc == VINF_SUCCESS, ("rc=%Rrc\n", State.rc));
830	RTR0TESTR0_CHECK_MSG_BREAK(!State.u.Specific.fFailed, ("iCpu=%u i=%u\n", iCpu, i));
831	}
832
833	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
834	pTimer = NULL;
835	if (RTR0TestR0HaveErrors())
836	break;
837
838	RTMpGetOnlineSet(&OnlineSet);
839	}
840	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
841	break;
842	}
843
844	case TSTRTR0TIMER_PERIODIC_OMNI:
845	case TSTRTR0TIMER_PERIODIC_OMNI_HIRES:
846	{
847	/* Create a periodic timer running at max host frequency, but no more than 1000 Hz. */
848	uint32_t cNsInterval = cNsSysHz;
849	while (cNsInterval < UINT32_C(1000000))
850	cNsInterval *= 2;
851	PTSTRTR0TIMEROMNI1 paStates = (PTSTRTR0TIMEROMNI1)RTMemAllocZ(sizeof(paStates[0]) * RTCPUSET_MAX_CPUS);
852	RTR0TESTR0_CHECK_MSG_BREAK(paStates, ("%d\n", RTCPUSET_MAX_CPUS));
853
854	PRTTIMER pTimer;
855	uint32_t fFlags = (TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0)
856	\| RTTIMER_FLAGS_CPU_ALL;
857	int rc = RTTimerCreateEx(&pTimer, cNsInterval, fFlags, tstRTR0TimerCallbackOmni, paStates);
858	if (rc == VERR_NOT_SUPPORTED)
859	{
860	RTR0TESTR0_SKIP_BREAK();
861	}
862	RTR0TESTR0_CHECK_RC_BREAK(rc, VINF_SUCCESS);
863
864	for (uint32_t iTest = 0; iTest < 3 && !RTR0TestR0HaveErrors(); iTest++)
865	{
866	/* reset the state */
867	for (uint32_t iCpu = 0; iCpu < RTCPUSET_MAX_CPUS; iCpu++)
868	{
869	paStates[iCpu].u64Start = 0;
870	paStates[iCpu].u64Last = 0;
871	ASMAtomicWriteU32(&paStates[iCpu].cTicks, 0);
872	}
873
874	/* run it for 5 seconds. */
875	RTCPUSET OnlineSet;
876	uint64_t uStartNsTS = RTTimeSystemNanoTS();
877	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, 0), VINF_SUCCESS);
878	RTMpGetOnlineSet(&OnlineSet);
879
880	for (uint32_t i = 0; i < 5000 && RTTimeSystemNanoTS() - uStartNsTS <= UINT64_C(5000000000); i++)
881	RTThreadSleep(2);
882
883	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStop(pTimer), VINF_SUCCESS);
884	uint64_t cNsElapsedX = RTTimeNanoTS() - uStartNsTS;
885
886	/* Do a min/max on the start and stop times and calculate the test period. */
887	uint64_t u64MinStart = UINT64_MAX;
888	uint64_t u64MaxStop = 0;
889	for (uint32_t iCpu = 0; iCpu < RTCPUSET_MAX_CPUS; iCpu++)
890	{
891	if (paStates[iCpu].u64Start)
892	{
893	if (paStates[iCpu].u64Start < u64MinStart)
894	u64MinStart = paStates[iCpu].u64Start;
895	if (paStates[iCpu].u64Last > u64MaxStop)
896	u64MaxStop = paStates[iCpu].u64Last;
897	}
898	}
899	RTR0TESTR0_CHECK_MSG(u64MinStart < u64MaxStop, ("%llu, %llu", u64MinStart, u64MaxStop));
900	uint64_t cNsElapsed = u64MaxStop - u64MinStart;
901	RTR0TESTR0_CHECK_MSG(cNsElapsed <= cNsElapsedX + 100000, ("%llu, %llu", cNsElapsed, cNsElapsedX)); /* the fudge factor is time drift */
902	uint32_t cAvgTicks = cNsElapsed / cNsInterval + 1;
903
904	/* Check tick counts. ASSUMES no cpu on- or offlining.
905	This only catches really bad stuff. */
906	uint32_t cMargin = TSTRTR0TIMER_IS_HIRES(uOperation) ? 10 : 5; /* Allow a wider deviation for the non hires timers. */
907	uint32_t cMinTicks = cAvgTicks - cAvgTicks / cMargin;
908	uint32_t cMaxTicks = cAvgTicks + cAvgTicks / cMargin + 1;
909	for (uint32_t iCpu = 0; iCpu < RTCPUSET_MAX_CPUS; iCpu++)
910	if (paStates[iCpu].cTicks)
911	{
912	RTR0TESTR0_CHECK_MSG(RTCpuSetIsMemberByIndex(&OnlineSet, iCpu), ("%d\n", iCpu));
913	RTR0TESTR0_CHECK_MSG(paStates[iCpu].cTicks <= cMaxTicks && paStates[iCpu].cTicks >= cMinTicks,
914	("min=%u, ticks=%u, avg=%u max=%u, iCpu=%u, iCpuCurr=%u, interval=%'u, elapsed=%'llu/%'llu\n",
915	cMinTicks, paStates[iCpu].cTicks, cAvgTicks, cMaxTicks, iCpu,
916	RTMpCpuIdToSetIndex(RTMpCpuId()),
917	cNsInterval, cNsElapsed, cNsElapsedX));
918	}
919	else
920	RTR0TESTR0_CHECK_MSG(!RTCpuSetIsMemberByIndex(&OnlineSet, iCpu), ("%d\n", iCpu));
921	}
922
923	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
924	RTMemFree(paStates);
925	break;
926	}
927
928
929	case TSTRTR0TIMER_LATENCY_OMNI:
930	case TSTRTR0TIMER_LATENCY_OMNI_HIRES:
931	{
932	/*
933	* Create a periodic timer running at max host frequency, but no more than 1000 Hz.
934	* Unless it's a high resolution timer, which we try at double the rate.
935	* Windows seems to limit the highres stuff to around 500-600 us interval.
936	*/
937	PRTTIMER pTimer;
938	uint32_t fFlags = (TSTRTR0TIMER_IS_HIRES(uOperation) ? RTTIMER_FLAGS_HIGH_RES : 0)
939	\| RTTIMER_FLAGS_CPU_ALL;
940	uint32_t const cNsMinInterval = TSTRTR0TIMER_IS_HIRES(uOperation) ? cNsMaxHighResHz : RT_NS_1MS;
941	uint32_t cNsInterval = TSTRTR0TIMER_IS_HIRES(uOperation) ? cNsSysHz / 2 : cNsSysHz;
942	while (cNsInterval < cNsMinInterval)
943	cNsInterval *= 2;
944	int rc = RTTimerCreateEx(&pTimer, cNsInterval, fFlags, tstRTR0TimerCallbackLatencyOmni, NULL);
945	if (rc == VERR_NOT_SUPPORTED)
946	{
947	RTR0TESTR0_SKIP_BREAK();
948	}
949	RTR0TESTR0_CHECK_RC_BREAK(rc, VINF_SUCCESS);
950
951	/*
952	* Reset the state and run the test for 4 seconds.
953	*/
954	RT_ZERO(g_aOmniLatency);
955
956	RTCPUSET OnlineSet;
957	uint64_t uStartNsTS = RTTimeSystemNanoTS();
958	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStart(pTimer, 0), VINF_SUCCESS);
959	RTMpGetOnlineSet(&OnlineSet);
960
961	for (uint32_t i = 0; i < 5000 && RTTimeSystemNanoTS() - uStartNsTS <= UINT64_C(4000000000); i++)
962	RTThreadSleep(2);
963
964	RTR0TESTR0_CHECK_RC_BREAK(RTTimerStop(pTimer), VINF_SUCCESS);
965
966	/*
967	* Process the result.
968	*/
969	int32_t cNsLow = cNsInterval / 4 * 3; /* 75% */
970	int32_t cNsHigh = cNsInterval / 4 * 5; /* 125% */
971	uint32_t cTotal = 0;
972	uint32_t cLow = 0;
973	uint32_t cHigh = 0;
974	for (uint32_t iCpu = 0; iCpu < RT_ELEMENTS(g_aOmniLatency); iCpu++)
975	{
976	uint32_t cSamples = g_aOmniLatency[iCpu].cSamples;
977	if (cSamples > 1)
978	{
979	cTotal += cSamples - 1;
980	for (uint32_t iSample = 1; iSample < cSamples; iSample++)
981	{
982	int64_t cNsDelta = g_aOmniLatency[iCpu].aSamples[iSample].uNanoTs
983	- g_aOmniLatency[iCpu].aSamples[iSample - 1].uNanoTs;
984	if (cNsDelta < cNsLow)
985	cLow++;
986	else if (cNsDelta > cNsHigh)
987	cHigh++;
988	}
989	}
990	}
991	RTR0TestR0Info("125%%: %u; 75%%: %u; total: %u", cHigh, cLow, cTotal);
992	RTR0TESTR0_CHECK_RC(RTTimerDestroy(pTimer), VINF_SUCCESS);
993	#if 1
994	RTR0TestR0Info("cNsSysHz=%u cNsInterval=%RU32 cNsLow=%d cNsHigh=%d", cNsSysHz, cNsInterval, cNsLow, cNsHigh);
995	if (TSTRTR0TIMER_IS_HIRES(uOperation))
996	RTR0TestR0Info("RTTimerCanDoHighResolution -> %d", RTTimerCanDoHighResolution());
997	for (uint32_t iSample = 1; iSample < 6; iSample++)
998	RTR0TestR0Info("%RU64/%#RU64",
999	g_aOmniLatency[0].aSamples[iSample].uNanoTs - g_aOmniLatency[0].aSamples[iSample - 1].uNanoTs,
1000	g_aOmniLatency[0].aSamples[iSample].uTsc - g_aOmniLatency[0].aSamples[iSample - 1].uTsc);
1001	#endif
1002	break;
1003	}
1004
1005	}
1006
1007	RTR0TESTR0_SRV_REQ_EPILOG(pReqHdr);
1008	/* The error indicator is the '!' in the message buffer. */
1009	return VINF_SUCCESS;
1010	}
1011

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source: vbox/trunk/src/VBox/Runtime/testcase/tstRTR0Timer.cpp@ 93115

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