static int pdmacFileInitialize(PPDMASYNCCOMPLETIONEPCLASS pClassGlobals, PCFGMNODE pCfgNode) { PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pClassGlobals; RTFILEAIOLIMITS AioLimits; /** < Async I/O limitations. */ int rc = RTFileAioGetLimits(&AioLimits); #ifdef DEBUG if (RT_SUCCESS(rc) && RTEnvExist("VBOX_ASYNC_IO_FAILBACK")) rc = VERR_ENV_VAR_NOT_FOUND; #endif if (RT_FAILURE(rc)) { LogRel(("AIO: Async I/O manager not supported (rc=%Rrc). Falling back to simple manager\n", rc)); pEpClassFile->enmMgrTypeOverride = PDMACEPFILEMGRTYPE_SIMPLE; pEpClassFile->enmEpBackendDefault = PDMACFILEEPBACKEND_BUFFERED; } else { pEpClassFile->uBitmaskAlignment = AioLimits.cbBufferAlignment ? ~((RTR3UINTPTR)AioLimits.cbBufferAlignment - 1) : RTR3UINTPTR_MAX; pEpClassFile->cReqsOutstandingMax = AioLimits.cReqsOutstandingMax; if (pCfgNode) { /* Query the default manager type */ char *pszVal = NULL; rc = CFGMR3QueryStringAllocDef(pCfgNode, "IoMgr", &pszVal, "Async"); AssertLogRelRCReturn(rc, rc); rc = pdmacFileMgrTypeFromName(pszVal, &pEpClassFile->enmMgrTypeOverride); MMR3HeapFree(pszVal); if (RT_FAILURE(rc)) return rc; LogRel(("AIOMgr: Default manager type is \"%s\"\n", pdmacFileMgrTypeToName(pEpClassFile->enmMgrTypeOverride))); /* Query default backend type */ rc = CFGMR3QueryStringAllocDef(pCfgNode, "FileBackend", &pszVal, "NonBuffered"); AssertLogRelRCReturn(rc, rc); rc = pdmacFileBackendTypeFromName(pszVal, &pEpClassFile->enmEpBackendDefault); MMR3HeapFree(pszVal); if (RT_FAILURE(rc)) return rc; LogRel(("AIOMgr: Default file backend is \"%s\"\n", pdmacFileBackendTypeToName(pEpClassFile->enmEpBackendDefault))); #ifdef RT_OS_LINUX if ( pEpClassFile->enmMgrTypeOverride == PDMACEPFILEMGRTYPE_ASYNC && pEpClassFile->enmEpBackendDefault == PDMACFILEEPBACKEND_BUFFERED) { LogRel(("AIOMgr: Linux does not support buffered async I/O, changing to non buffered\n")); pEpClassFile->enmEpBackendDefault = PDMACFILEEPBACKEND_NON_BUFFERED; } #endif } else { /* No configuration supplied, set defaults */ pEpClassFile->enmEpBackendDefault = PDMACFILEEPBACKEND_NON_BUFFERED; pEpClassFile->enmMgrTypeOverride = PDMACEPFILEMGRTYPE_ASYNC; } } /* Init critical section. */ rc = RTCritSectInit(&pEpClassFile->CritSect); #ifdef VBOX_WITH_DEBUGGER /* Install the error injection handler. */ if (RT_SUCCESS(rc)) { rc = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds)); AssertRC(rc); } #ifdef PDM_ASYNC_COMPLETION_FILE_WITH_DELAY rc = TMR3TimerCreateInternal(pEpClassFile->Core.pVM, TMCLOCK_REAL, pdmacR3TimerCallback, pEpClassFile, "AC Delay", &pEpClassFile->pTimer); AssertRC(rc); pEpClassFile->cMilliesNext = UINT64_MAX; #endif #endif return rc; }
/** * This is called on each EMT and will beat TM. * * @returns VINF_SUCCESS, test failure is reported via RTTEST. * @param pVM Pointer to the VM. * @param hTest The test handle. */ DECLCALLBACK(int) tstTMWorker(PVM pVM, RTTEST hTest) { VMCPUID idCpu = VMMGetCpuId(pVM); RTTestPrintfNl(hTest, RTTESTLVL_ALWAYS, "idCpu=%d STARTING\n", idCpu); /* * Create the test set. */ int rc; PTMTIMER apTimers[5]; for (size_t i = 0; i < RT_ELEMENTS(apTimers); i++) { rc = TMR3TimerCreateInternal(pVM, i & 1 ? TMCLOCK_VIRTUAL : TMCLOCK_VIRTUAL_SYNC, tstTMDummyCallback, NULL, "test timer", &apTimers[i]); RTTEST_CHECK_RET(hTest, RT_SUCCESS(rc), rc); } /* * The run loop. */ unsigned uPrevPct = 0; uint32_t const cLoops = 100000; for (uint32_t iLoop = 0; iLoop < cLoops; iLoop++) { size_t cLeft = RT_ELEMENTS(apTimers); unsigned i = iLoop % RT_ELEMENTS(apTimers); while (cLeft-- > 0) { PTMTIMER pTimer = apTimers[i]; if ( cLeft == RT_ELEMENTS(apTimers) / 2 && TMTimerIsActive(pTimer)) { rc = TMTimerStop(pTimer); RTTEST_CHECK_MSG(hTest, RT_SUCCESS(rc), (hTest, "TMTimerStop: %Rrc\n", rc)); } else { rc = TMTimerSetMicro(pTimer, 50 + cLeft); RTTEST_CHECK_MSG(hTest, RT_SUCCESS(rc), (hTest, "TMTimerSetMicro: %Rrc\n", rc)); } /* next */ i = (i + 1) % RT_ELEMENTS(apTimers); } if (i % 3) TMR3TimerQueuesDo(pVM); /* Progress report. */ unsigned uPct = (unsigned)(100.0 * iLoop / cLoops); if (uPct != uPrevPct) { uPrevPct = uPct; if (!(uPct % 10)) RTTestPrintfNl(hTest, RTTESTLVL_ALWAYS, "idCpu=%d - %3u%%\n", idCpu, uPct); } } RTTestPrintfNl(hTest, RTTESTLVL_ALWAYS, "idCpu=%d DONE\n", idCpu); return 0; }
/** * Internal worker for the queue creation apis. * * @returns VBox status. * @param pVM Pointer to the VM. * @param cbItem Item size. * @param cItems Number of items. * @param cMilliesInterval Number of milliseconds between polling the queue. * If 0 then the emulation thread will be notified whenever an item arrives. * @param fRZEnabled Set if the queue will be used from RC/R0 and need to be allocated from the hyper heap. * @param pszName The queue name. Unique. Not copied. * @param ppQueue Where to store the queue handle. */ static int pdmR3QueueCreate(PVM pVM, size_t cbItem, uint32_t cItems, uint32_t cMilliesInterval, bool fRZEnabled, const char *pszName, PPDMQUEUE *ppQueue) { PUVM pUVM = pVM->pUVM; /* * Validate input. */ AssertMsgReturn(cbItem >= sizeof(PDMQUEUEITEMCORE) && cbItem < _1M, ("cbItem=%zu\n", cbItem), VERR_OUT_OF_RANGE); AssertMsgReturn(cItems >= 1 && cItems <= _64K, ("cItems=%u\n", cItems), VERR_OUT_OF_RANGE); /* * Align the item size and calculate the structure size. */ cbItem = RT_ALIGN(cbItem, sizeof(RTUINTPTR)); size_t cb = cbItem * cItems + RT_ALIGN_Z(RT_OFFSETOF(PDMQUEUE, aFreeItems[cItems + PDMQUEUE_FREE_SLACK]), 16); PPDMQUEUE pQueue; int rc; if (fRZEnabled) rc = MMHyperAlloc(pVM, cb, 0, MM_TAG_PDM_QUEUE, (void **)&pQueue ); else rc = MMR3HeapAllocZEx(pVM, MM_TAG_PDM_QUEUE, cb, (void **)&pQueue); if (RT_FAILURE(rc)) return rc; /* * Initialize the data fields. */ pQueue->pVMR3 = pVM; pQueue->pVMR0 = fRZEnabled ? pVM->pVMR0 : NIL_RTR0PTR; pQueue->pVMRC = fRZEnabled ? pVM->pVMRC : NIL_RTRCPTR; pQueue->pszName = pszName; pQueue->cMilliesInterval = cMilliesInterval; //pQueue->pTimer = NULL; pQueue->cbItem = (uint32_t)cbItem; pQueue->cItems = cItems; //pQueue->pPendingR3 = NULL; //pQueue->pPendingR0 = NULL; //pQueue->pPendingRC = NULL; pQueue->iFreeHead = cItems; //pQueue->iFreeTail = 0; PPDMQUEUEITEMCORE pItem = (PPDMQUEUEITEMCORE)((char *)pQueue + RT_ALIGN_Z(RT_OFFSETOF(PDMQUEUE, aFreeItems[cItems + PDMQUEUE_FREE_SLACK]), 16)); for (unsigned i = 0; i < cItems; i++, pItem = (PPDMQUEUEITEMCORE)((char *)pItem + cbItem)) { pQueue->aFreeItems[i].pItemR3 = pItem; if (fRZEnabled) { pQueue->aFreeItems[i].pItemR0 = MMHyperR3ToR0(pVM, pItem); pQueue->aFreeItems[i].pItemRC = MMHyperR3ToRC(pVM, pItem); } } /* * Create timer? */ if (cMilliesInterval) { rc = TMR3TimerCreateInternal(pVM, TMCLOCK_REAL, pdmR3QueueTimer, pQueue, "Queue timer", &pQueue->pTimer); if (RT_SUCCESS(rc)) { rc = TMTimerSetMillies(pQueue->pTimer, cMilliesInterval); if (RT_FAILURE(rc)) { AssertMsgFailed(("TMTimerSetMillies failed rc=%Rrc\n", rc)); int rc2 = TMR3TimerDestroy(pQueue->pTimer); AssertRC(rc2); } } else AssertMsgFailed(("TMR3TimerCreateInternal failed rc=%Rrc\n", rc)); if (RT_FAILURE(rc)) { if (fRZEnabled) MMHyperFree(pVM, pQueue); else MMR3HeapFree(pQueue); return rc; } /* * Insert into the queue list for timer driven queues. */ pdmLock(pVM); pQueue->pNext = pUVM->pdm.s.pQueuesTimer; pUVM->pdm.s.pQueuesTimer = pQueue; pdmUnlock(pVM); } else { /* * Insert into the queue list for forced action driven queues. * This is a FIFO, so insert at the end. */ /** @todo we should add a priority to the queues so we don't have to rely on * the initialization order to deal with problems like @bugref{1605} (pgm/pcnet * deadlock caused by the critsect queue to be last in the chain). * - Update, the critical sections are no longer using queues, so this isn't a real * problem any longer. The priority might be a nice feature for later though. */ pdmLock(pVM); if (!pUVM->pdm.s.pQueuesForced) pUVM->pdm.s.pQueuesForced = pQueue; else { PPDMQUEUE pPrev = pUVM->pdm.s.pQueuesForced; while (pPrev->pNext) pPrev = pPrev->pNext; pPrev->pNext = pQueue; } pdmUnlock(pVM); } /* * Register the statistics. */ STAMR3RegisterF(pVM, &pQueue->cbItem, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_BYTES, "Item size.", "/PDM/Queue/%s/cbItem", pQueue->pszName); STAMR3RegisterF(pVM, &pQueue->cItems, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Queue size.", "/PDM/Queue/%s/cItems", pQueue->pszName); STAMR3RegisterF(pVM, &pQueue->StatAllocFailures, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "PDMQueueAlloc failures.", "/PDM/Queue/%s/AllocFailures", pQueue->pszName); STAMR3RegisterF(pVM, &pQueue->StatInsert, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_CALLS, "Calls to PDMQueueInsert.", "/PDM/Queue/%s/Insert", pQueue->pszName); STAMR3RegisterF(pVM, &pQueue->StatFlush, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_CALLS, "Calls to pdmR3QueueFlush.", "/PDM/Queue/%s/Flush", pQueue->pszName); STAMR3RegisterF(pVM, &pQueue->StatFlushLeftovers, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, STAMUNIT_OCCURENCES, "Left over items after flush.", "/PDM/Queue/%s/FlushLeftovers", pQueue->pszName); #ifdef VBOX_WITH_STATISTICS STAMR3RegisterF(pVM, &pQueue->StatFlushPrf, STAMTYPE_PROFILE, STAMVISIBILITY_ALWAYS, STAMUNIT_CALLS, "Profiling pdmR3QueueFlush.", "/PDM/Queue/%s/FlushPrf", pQueue->pszName); STAMR3RegisterF(pVM, (void *)&pQueue->cStatPending, STAMTYPE_U32, STAMVISIBILITY_ALWAYS, STAMUNIT_COUNT, "Pending items.", "/PDM/Queue/%s/Pending", pQueue->pszName); #endif *ppQueue = pQueue; return VINF_SUCCESS; }