[20167] | 1 | /* $Id: PDMAsyncCompletionFile.cpp 46493 2013-06-11 13:34:40Z vboxsync $ */
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| 2 | /** @file
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| 3 | * PDM Async I/O - Transport data asynchronous in R3 using EMT.
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| 4 | */
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| 5 |
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| 6 | /*
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[44528] | 7 | * Copyright (C) 2006-2013 Oracle Corporation
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[20167] | 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 |
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| 19 | /*******************************************************************************
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| 20 | * Header Files *
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| 21 | *******************************************************************************/
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| 22 | #define LOG_GROUP LOG_GROUP_PDM_ASYNC_COMPLETION
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| 23 | #include "PDMInternal.h"
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[35346] | 24 | #include <VBox/vmm/pdm.h>
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| 25 | #include <VBox/vmm/mm.h>
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| 26 | #include <VBox/vmm/vm.h>
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[20167] | 27 | #include <VBox/err.h>
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[22981] | 28 | #include <VBox/log.h>
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[34431] | 29 | #include <VBox/dbg.h>
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[35346] | 30 | #include <VBox/vmm/uvm.h>
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[43623] | 31 | #include <VBox/vmm/tm.h>
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[20167] | 32 |
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| 33 | #include <iprt/asm.h>
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| 34 | #include <iprt/assert.h>
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| 35 | #include <iprt/critsect.h>
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[22981] | 36 | #include <iprt/env.h>
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[20167] | 37 | #include <iprt/file.h>
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[22981] | 38 | #include <iprt/mem.h>
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[20167] | 39 | #include <iprt/semaphore.h>
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[21496] | 40 | #include <iprt/string.h>
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[22981] | 41 | #include <iprt/thread.h>
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[24278] | 42 | #include <iprt/path.h>
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[43623] | 43 | #include <iprt/rand.h>
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[20167] | 44 |
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[21496] | 45 | #include "PDMAsyncCompletionFileInternal.h"
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[20167] | 46 |
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[34431] | 47 | /*******************************************************************************
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| 48 | * Internal Functions *
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| 49 | *******************************************************************************/
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| 50 | #ifdef VBOX_WITH_DEBUGGER
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[44399] | 51 | static FNDBGCCMD pdmacEpFileErrorInject;
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[39070] | 52 | # ifdef PDM_ASYNC_COMPLETION_FILE_WITH_DELAY
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[44399] | 53 | static FNDBGCCMD pdmacEpFileDelayInject;
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[39070] | 54 | # endif
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[34431] | 55 | #endif
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| 56 |
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| 57 | /*******************************************************************************
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| 58 | * Global Variables *
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| 59 | *******************************************************************************/
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| 60 | #ifdef VBOX_WITH_DEBUGGER
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| 61 | static const DBGCVARDESC g_aInjectErrorArgs[] =
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| 62 | {
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| 63 | /* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
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| 64 | { 1, 1, DBGCVAR_CAT_STRING, 0, "direction", "write/read." },
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| 65 | { 1, 1, DBGCVAR_CAT_STRING, 0, "filename", "Filename." },
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[35694] | 66 | { 1, 1, DBGCVAR_CAT_NUMBER, 0, "errcode", "VBox status code." },
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[34431] | 67 | };
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| 68 |
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[36799] | 69 | # ifdef PDM_ASYNC_COMPLETION_FILE_WITH_DELAY
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| 70 | static const DBGCVARDESC g_aInjectDelayArgs[] =
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| 71 | {
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| 72 | /* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
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[41469] | 73 | { 1, 1, DBGCVAR_CAT_STRING, 0, "direction", "write|read|flush|any." },
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[36799] | 74 | { 1, 1, DBGCVAR_CAT_STRING, 0, "filename", "Filename." },
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| 75 | { 1, 1, DBGCVAR_CAT_NUMBER, 0, "delay", "Delay in milliseconds." },
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[43623] | 76 | { 1, 1, DBGCVAR_CAT_NUMBER, 0, "jitter", "Jitter of the delay." },
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| 77 | { 1, 1, DBGCVAR_CAT_NUMBER, 0, "reqs", "Number of requests to delay." }
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| 78 |
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[36799] | 79 | };
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| 80 | # endif
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| 81 |
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[34431] | 82 | /** Command descriptors. */
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| 83 | static const DBGCCMD g_aCmds[] =
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| 84 | {
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[43625] | 85 | /* pszCmd, cArgsMin, cArgsMax, paArgDesc, cArgDescs, fFlags, pfnHandler pszSyntax,.pszDescription */
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| 86 | { "injecterror", 3, 3, &g_aInjectErrorArgs[0], 3, 0, pdmacEpFileErrorInject, "", "Inject error into I/O subsystem." }
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[36799] | 87 | # ifdef PDM_ASYNC_COMPLETION_FILE_WITH_DELAY
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[43625] | 88 | ,{ "injectdelay", 3, 5, &g_aInjectDelayArgs[0], RT_ELEMENTS(g_aInjectDelayArgs), 0, pdmacEpFileDelayInject, "", "Inject a delay of a request." }
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[36799] | 89 | # endif
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[34431] | 90 | };
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| 91 | #endif
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| 92 |
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[39031] | 93 |
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[20167] | 94 | /**
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[22309] | 95 | * Frees a task.
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[20167] | 96 | *
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| 97 | * @returns nothing.
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| 98 | * @param pEndpoint Pointer to the endpoint the segment was for.
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[22309] | 99 | * @param pTask The task to free.
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[20167] | 100 | */
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[39031] | 101 | void pdmacFileTaskFree(PPDMASYNCCOMPLETIONENDPOINTFILE pEndpoint, PPDMACTASKFILE pTask)
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[20167] | 102 | {
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| 103 | PPDMASYNCCOMPLETIONEPCLASSFILE pEpClass = (PPDMASYNCCOMPLETIONEPCLASSFILE)pEndpoint->Core.pEpClass;
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| 104 |
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[22309] | 105 | LogFlowFunc((": pEndpoint=%p pTask=%p\n", pEndpoint, pTask));
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[20167] | 106 |
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| 107 | /* Try the per endpoint cache first. */
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[22309] | 108 | if (pEndpoint->cTasksCached < pEpClass->cTasksCacheMax)
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[20167] | 109 | {
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| 110 | /* Add it to the list. */
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[22309] | 111 | pEndpoint->pTasksFreeTail->pNext = pTask;
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| 112 | pEndpoint->pTasksFreeTail = pTask;
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| 113 | ASMAtomicIncU32(&pEndpoint->cTasksCached);
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[20167] | 114 | }
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| 115 | else
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| 116 | {
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[22309] | 117 | Log(("Freeing task %p because all caches are full\n", pTask));
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| 118 | MMR3HeapFree(pTask);
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[20167] | 119 | }
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| 120 | }
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| 121 |
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| 122 | /**
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| 123 | * Allocates a task segment
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| 124 | *
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| 125 | * @returns Pointer to the new task segment or NULL
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| 126 | * @param pEndpoint Pointer to the endpoint
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| 127 | */
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[22309] | 128 | PPDMACTASKFILE pdmacFileTaskAlloc(PPDMASYNCCOMPLETIONENDPOINTFILE pEndpoint)
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[20167] | 129 | {
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[22309] | 130 | PPDMACTASKFILE pTask = NULL;
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[20167] | 131 |
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| 132 | /* Try the small per endpoint cache first. */
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[22309] | 133 | if (pEndpoint->pTasksFreeHead == pEndpoint->pTasksFreeTail)
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[20167] | 134 | {
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| 135 | /* Try the bigger endpoint class cache. */
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| 136 | PPDMASYNCCOMPLETIONEPCLASSFILE pEndpointClass = (PPDMASYNCCOMPLETIONEPCLASSFILE)pEndpoint->Core.pEpClass;
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| 137 |
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[27978] | 138 | /*
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| 139 | * Allocate completely new.
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| 140 | * If this fails we return NULL.
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| 141 | */
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| 142 | int rc = MMR3HeapAllocZEx(pEndpointClass->Core.pVM, MM_TAG_PDM_ASYNC_COMPLETION,
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| 143 | sizeof(PDMACTASKFILE),
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| 144 | (void **)&pTask);
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| 145 | if (RT_FAILURE(rc))
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| 146 | pTask = NULL;
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[20167] | 147 |
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[27978] | 148 | LogFlow(("Allocated task %p\n", pTask));
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[20167] | 149 | }
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| 150 | else
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| 151 | {
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| 152 | /* Grab a free task from the head. */
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[22309] | 153 | AssertMsg(pEndpoint->cTasksCached > 0, ("No tasks cached but list contains more than one element\n"));
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[20167] | 154 |
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[22309] | 155 | pTask = pEndpoint->pTasksFreeHead;
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| 156 | pEndpoint->pTasksFreeHead = pTask->pNext;
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| 157 | ASMAtomicDecU32(&pEndpoint->cTasksCached);
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[20167] | 158 | }
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| 159 |
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[22309] | 160 | pTask->pNext = NULL;
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[20167] | 161 |
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[22309] | 162 | return pTask;
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[20167] | 163 | }
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| 164 |
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[22309] | 165 | PPDMACTASKFILE pdmacFileEpGetNewTasks(PPDMASYNCCOMPLETIONENDPOINTFILE pEndpoint)
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[20167] | 166 | {
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| 167 | /*
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| 168 | * Get pending tasks.
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| 169 | */
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[39031] | 170 | PPDMACTASKFILE pTasks = ASMAtomicXchgPtrT(&pEndpoint->pTasksNewHead, NULL, PPDMACTASKFILE);
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[20167] | 171 |
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| 172 | /* Reverse the list to process in FIFO order. */
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| 173 | if (pTasks)
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| 174 | {
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[22309] | 175 | PPDMACTASKFILE pTask = pTasks;
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[20167] | 176 |
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| 177 | pTasks = NULL;
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| 178 |
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| 179 | while (pTask)
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| 180 | {
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[22309] | 181 | PPDMACTASKFILE pCur = pTask;
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[20167] | 182 | pTask = pTask->pNext;
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| 183 | pCur->pNext = pTasks;
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| 184 | pTasks = pCur;
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| 185 | }
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| 186 | }
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| 187 |
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| 188 | return pTasks;
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| 189 | }
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| 190 |
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| 191 | static void pdmacFileAioMgrWakeup(PPDMACEPFILEMGR pAioMgr)
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| 192 | {
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| 193 | bool fWokenUp = ASMAtomicXchgBool(&pAioMgr->fWokenUp, true);
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| 194 | if (!fWokenUp)
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| 195 | {
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| 196 | bool fWaitingEventSem = ASMAtomicReadBool(&pAioMgr->fWaitingEventSem);
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| 197 | if (fWaitingEventSem)
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[39031] | 198 | {
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| 199 | int rc = RTSemEventSignal(pAioMgr->EventSem);
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| 200 | AssertRC(rc);
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| 201 | }
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[20167] | 202 | }
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| 203 | }
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| 204 |
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| 205 | static int pdmacFileAioMgrWaitForBlockingEvent(PPDMACEPFILEMGR pAioMgr, PDMACEPFILEAIOMGRBLOCKINGEVENT enmEvent)
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| 206 | {
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[21496] | 207 | ASMAtomicWriteU32((volatile uint32_t *)&pAioMgr->enmBlockingEvent, enmEvent);
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[22967] | 208 | Assert(!pAioMgr->fBlockingEventPending);
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[21496] | 209 | ASMAtomicXchgBool(&pAioMgr->fBlockingEventPending, true);
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[20167] | 210 |
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| 211 | /* Wakeup the async I/O manager */
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| 212 | pdmacFileAioMgrWakeup(pAioMgr);
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| 213 |
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| 214 | /* Wait for completion. */
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[39031] | 215 | int rc = RTSemEventWait(pAioMgr->EventSemBlock, RT_INDEFINITE_WAIT);
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[20167] | 216 | AssertRC(rc);
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| 217 |
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[21496] | 218 | ASMAtomicXchgBool(&pAioMgr->fBlockingEventPending, false);
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| 219 | ASMAtomicWriteU32((volatile uint32_t *)&pAioMgr->enmBlockingEvent, PDMACEPFILEAIOMGRBLOCKINGEVENT_INVALID);
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[20167] | 220 |
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| 221 | return rc;
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| 222 | }
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| 223 |
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[22757] | 224 | int pdmacFileAioMgrAddEndpoint(PPDMACEPFILEMGR pAioMgr, PPDMASYNCCOMPLETIONENDPOINTFILE pEndpoint)
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[20167] | 225 | {
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[30131] | 226 | LogFlowFunc(("pAioMgr=%#p pEndpoint=%#p{%s}\n", pAioMgr, pEndpoint, pEndpoint->Core.pszUri));
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| 227 |
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| 228 | /* Update the assigned I/O manager. */
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| 229 | ASMAtomicWritePtr(&pEndpoint->pAioMgr, pAioMgr);
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| 230 |
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[39031] | 231 | int rc = RTCritSectEnter(&pAioMgr->CritSectBlockingEvent);
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[20167] | 232 | AssertRCReturn(rc, rc);
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| 233 |
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[30111] | 234 | ASMAtomicWritePtr(&pAioMgr->BlockingEventData.AddEndpoint.pEndpoint, pEndpoint);
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[20167] | 235 | rc = pdmacFileAioMgrWaitForBlockingEvent(pAioMgr, PDMACEPFILEAIOMGRBLOCKINGEVENT_ADD_ENDPOINT);
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[30136] | 236 | ASMAtomicWriteNullPtr(&pAioMgr->BlockingEventData.AddEndpoint.pEndpoint);
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[20167] | 237 |
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| 238 | RTCritSectLeave(&pAioMgr->CritSectBlockingEvent);
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| 239 |
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| 240 | return rc;
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| 241 | }
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| 242 |
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[39070] | 243 | #ifdef SOME_UNUSED_FUNCTION
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[20167] | 244 | static int pdmacFileAioMgrRemoveEndpoint(PPDMACEPFILEMGR pAioMgr, PPDMASYNCCOMPLETIONENDPOINTFILE pEndpoint)
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| 245 | {
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[39031] | 246 | int rc = RTCritSectEnter(&pAioMgr->CritSectBlockingEvent);
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[20167] | 247 | AssertRCReturn(rc, rc);
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| 248 |
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[30111] | 249 | ASMAtomicWritePtr(&pAioMgr->BlockingEventData.RemoveEndpoint.pEndpoint, pEndpoint);
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[20167] | 250 | rc = pdmacFileAioMgrWaitForBlockingEvent(pAioMgr, PDMACEPFILEAIOMGRBLOCKINGEVENT_REMOVE_ENDPOINT);
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[30136] | 251 | ASMAtomicWriteNullPtr(&pAioMgr->BlockingEventData.RemoveEndpoint.pEndpoint);
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[20167] | 252 |
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| 253 | RTCritSectLeave(&pAioMgr->CritSectBlockingEvent);
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| 254 |
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| 255 | return rc;
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| 256 | }
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[39070] | 257 | #endif
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[20167] | 258 |
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| 259 | static int pdmacFileAioMgrCloseEndpoint(PPDMACEPFILEMGR pAioMgr, PPDMASYNCCOMPLETIONENDPOINTFILE pEndpoint)
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| 260 | {
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[39031] | 261 | int rc = RTCritSectEnter(&pAioMgr->CritSectBlockingEvent);
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[20167] | 262 | AssertRCReturn(rc, rc);
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| 263 |
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[30111] | 264 | ASMAtomicWritePtr(&pAioMgr->BlockingEventData.CloseEndpoint.pEndpoint, pEndpoint);
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[20167] | 265 | rc = pdmacFileAioMgrWaitForBlockingEvent(pAioMgr, PDMACEPFILEAIOMGRBLOCKINGEVENT_CLOSE_ENDPOINT);
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[30136] | 266 | ASMAtomicWriteNullPtr(&pAioMgr->BlockingEventData.CloseEndpoint.pEndpoint);
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[20167] | 267 |
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| 268 | RTCritSectLeave(&pAioMgr->CritSectBlockingEvent);
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| 269 |
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| 270 | return rc;
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| 271 | }
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| 272 |
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| 273 | static int pdmacFileAioMgrShutdown(PPDMACEPFILEMGR pAioMgr)
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| 274 | {
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[39031] | 275 | int rc = RTCritSectEnter(&pAioMgr->CritSectBlockingEvent);
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[20167] | 276 | AssertRCReturn(rc, rc);
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| 277 |
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| 278 | rc = pdmacFileAioMgrWaitForBlockingEvent(pAioMgr, PDMACEPFILEAIOMGRBLOCKINGEVENT_SHUTDOWN);
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| 279 |
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| 280 | RTCritSectLeave(&pAioMgr->CritSectBlockingEvent);
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| 281 |
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| 282 | return rc;
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| 283 | }
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| 284 |
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[22309] | 285 | int pdmacFileEpAddTask(PPDMASYNCCOMPLETIONENDPOINTFILE pEndpoint, PPDMACTASKFILE pTask)
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[20167] | 286 | {
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[22309] | 287 | PPDMACTASKFILE pNext;
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[20167] | 288 | do
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| 289 | {
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| 290 | pNext = pEndpoint->pTasksNewHead;
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[22309] | 291 | pTask->pNext = pNext;
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[30111] | 292 | } while (!ASMAtomicCmpXchgPtr(&pEndpoint->pTasksNewHead, pTask, pNext));
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[20167] | 293 |
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[30111] | 294 | pdmacFileAioMgrWakeup(ASMAtomicReadPtrT(&pEndpoint->pAioMgr, PPDMACEPFILEMGR));
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[20167] | 295 |
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| 296 | return VINF_SUCCESS;
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| 297 | }
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| 298 |
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[27920] | 299 | void pdmacFileEpTaskCompleted(PPDMACTASKFILE pTask, void *pvUser, int rc)
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[20167] | 300 | {
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[22309] | 301 | PPDMASYNCCOMPLETIONTASKFILE pTaskFile = (PPDMASYNCCOMPLETIONTASKFILE)pvUser;
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| 302 |
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[28947] | 303 | LogFlowFunc(("pTask=%#p pvUser=%#p rc=%Rrc\n", pTask, pvUser, rc));
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| 304 |
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[22309] | 305 | if (pTask->enmTransferType == PDMACTASKFILETRANSFER_FLUSH)
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[27920] | 306 | pdmR3AsyncCompletionCompleteTask(&pTaskFile->Core, rc, true);
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[22309] | 307 | else
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| 308 | {
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[26526] | 309 | Assert((uint32_t)pTask->DataSeg.cbSeg == pTask->DataSeg.cbSeg && (int32_t)pTask->DataSeg.cbSeg >= 0);
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| 310 | uint32_t uOld = ASMAtomicSubS32(&pTaskFile->cbTransferLeft, (int32_t)pTask->DataSeg.cbSeg);
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[22309] | 311 |
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[27920] | 312 | /* The first error will be returned. */
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| 313 | if (RT_FAILURE(rc))
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| 314 | ASMAtomicCmpXchgS32(&pTaskFile->rc, rc, VINF_SUCCESS);
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[34612] | 315 | #ifdef VBOX_WITH_DEBUGGER
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[34344] | 316 | else
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| 317 | {
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| 318 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pTaskFile->Core.pEndpoint;
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[27920] | 319 |
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[34344] | 320 | /* Overwrite with injected error code. */
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| 321 | if (pTask->enmTransferType == PDMACTASKFILETRANSFER_READ)
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| 322 | rc = ASMAtomicXchgS32(&pEpFile->rcReqRead, VINF_SUCCESS);
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| 323 | else
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| 324 | rc = ASMAtomicXchgS32(&pEpFile->rcReqWrite, VINF_SUCCESS);
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| 325 |
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| 326 | if (RT_FAILURE(rc))
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| 327 | ASMAtomicCmpXchgS32(&pTaskFile->rc, rc, VINF_SUCCESS);
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| 328 | }
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| 329 | #endif
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| 330 |
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[22309] | 331 | if (!(uOld - pTask->DataSeg.cbSeg)
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| 332 | && !ASMAtomicXchgBool(&pTaskFile->fCompleted, true))
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[36799] | 333 | {
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| 334 | #ifdef PDM_ASYNC_COMPLETION_FILE_WITH_DELAY
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| 335 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pTaskFile->Core.pEndpoint;
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[43623] | 336 | PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pEpFile->Core.pEpClass;
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[36799] | 337 |
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| 338 | /* Check if we should delay completion of the request. */
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| 339 | if ( ASMAtomicReadU32(&pEpFile->msDelay) > 0
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[41469] | 340 | && ASMAtomicReadU32(&pEpFile->cReqsDelay) > 0)
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[36799] | 341 | {
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[43625] | 342 | uint64_t tsDelay = pEpFile->msDelay;
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| 343 |
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| 344 | if (pEpFile->msJitter)
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| 345 | tsDelay = (RTRandU32() % 100) > 50 ? pEpFile->msDelay + (RTRandU32() % pEpFile->msJitter)
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| 346 | : pEpFile->msDelay - (RTRandU32() % pEpFile->msJitter);
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[41469] | 347 | ASMAtomicDecU32(&pEpFile->cReqsDelay);
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| 348 |
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[36799] | 349 | /* Arm the delay. */
|
---|
[43623] | 350 | pTaskFile->tsDelayEnd = RTTimeProgramMilliTS() + tsDelay;
|
---|
[41469] | 351 |
|
---|
| 352 | /* Append to the list. */
|
---|
| 353 | PPDMASYNCCOMPLETIONTASKFILE pHead = NULL;
|
---|
| 354 | do
|
---|
| 355 | {
|
---|
| 356 | pHead = ASMAtomicReadPtrT(&pEpFile->pDelayedHead, PPDMASYNCCOMPLETIONTASKFILE);
|
---|
| 357 | pTaskFile->pDelayedNext = pHead;
|
---|
| 358 | } while (!ASMAtomicCmpXchgPtr(&pEpFile->pDelayedHead, pTaskFile, pHead));
|
---|
| 359 |
|
---|
[43623] | 360 | if (tsDelay < pEpClassFile->cMilliesNext)
|
---|
[41469] | 361 | {
|
---|
[43623] | 362 | ASMAtomicWriteU64(&pEpClassFile->cMilliesNext, tsDelay);
|
---|
| 363 | TMTimerSetMillies(pEpClassFile->pTimer, tsDelay);
|
---|
| 364 | }
|
---|
[41469] | 365 |
|
---|
[43623] | 366 | LogRel(("AIOMgr: Delaying request %#p for %u ms\n", pTaskFile, tsDelay));
|
---|
[36799] | 367 | }
|
---|
[43623] | 368 | else
|
---|
[36799] | 369 | #endif
|
---|
[43623] | 370 | pdmR3AsyncCompletionCompleteTask(&pTaskFile->Core, pTaskFile->rc, true);
|
---|
[36799] | 371 | }
|
---|
[22309] | 372 | }
|
---|
| 373 | }
|
---|
| 374 |
|
---|
[28947] | 375 | DECLINLINE(void) pdmacFileEpTaskInit(PPDMASYNCCOMPLETIONTASK pTask, size_t cbTransfer)
|
---|
| 376 | {
|
---|
| 377 | PPDMASYNCCOMPLETIONTASKFILE pTaskFile = (PPDMASYNCCOMPLETIONTASKFILE)pTask;
|
---|
| 378 |
|
---|
| 379 | Assert((uint32_t)cbTransfer == cbTransfer && (int32_t)cbTransfer >= 0);
|
---|
| 380 | ASMAtomicWriteS32(&pTaskFile->cbTransferLeft, (int32_t)cbTransfer);
|
---|
| 381 | ASMAtomicWriteBool(&pTaskFile->fCompleted, false);
|
---|
| 382 | ASMAtomicWriteS32(&pTaskFile->rc, VINF_SUCCESS);
|
---|
| 383 | }
|
---|
| 384 |
|
---|
[22309] | 385 | int pdmacFileEpTaskInitiate(PPDMASYNCCOMPLETIONTASK pTask,
|
---|
| 386 | PPDMASYNCCOMPLETIONENDPOINT pEndpoint, RTFOFF off,
|
---|
[28065] | 387 | PCRTSGSEG paSegments, size_t cSegments,
|
---|
[22309] | 388 | size_t cbTransfer, PDMACTASKFILETRANSFER enmTransfer)
|
---|
| 389 | {
|
---|
[20167] | 390 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEndpoint;
|
---|
| 391 | PPDMASYNCCOMPLETIONTASKFILE pTaskFile = (PPDMASYNCCOMPLETIONTASKFILE)pTask;
|
---|
| 392 |
|
---|
[21496] | 393 | Assert( (enmTransfer == PDMACTASKFILETRANSFER_READ)
|
---|
| 394 | || (enmTransfer == PDMACTASKFILETRANSFER_WRITE));
|
---|
[20167] | 395 |
|
---|
[39031] | 396 | for (size_t i = 0; i < cSegments; i++)
|
---|
[20167] | 397 | {
|
---|
[22309] | 398 | PPDMACTASKFILE pIoTask = pdmacFileTaskAlloc(pEpFile);
|
---|
| 399 | AssertPtr(pIoTask);
|
---|
[20167] | 400 |
|
---|
[22309] | 401 | pIoTask->pEndpoint = pEpFile;
|
---|
| 402 | pIoTask->enmTransferType = enmTransfer;
|
---|
| 403 | pIoTask->Off = off;
|
---|
| 404 | pIoTask->DataSeg.cbSeg = paSegments[i].cbSeg;
|
---|
| 405 | pIoTask->DataSeg.pvSeg = paSegments[i].pvSeg;
|
---|
| 406 | pIoTask->pvUser = pTaskFile;
|
---|
| 407 | pIoTask->pfnCompleted = pdmacFileEpTaskCompleted;
|
---|
| 408 |
|
---|
| 409 | /* Send it off to the I/O manager. */
|
---|
| 410 | pdmacFileEpAddTask(pEpFile, pIoTask);
|
---|
| 411 | off += paSegments[i].cbSeg;
|
---|
| 412 | cbTransfer -= paSegments[i].cbSeg;
|
---|
[20167] | 413 | }
|
---|
| 414 |
|
---|
[22309] | 415 | AssertMsg(!cbTransfer, ("Incomplete transfer %u bytes left\n", cbTransfer));
|
---|
[20167] | 416 |
|
---|
[36285] | 417 | return VINF_AIO_TASK_PENDING;
|
---|
[20167] | 418 | }
|
---|
| 419 |
|
---|
| 420 | /**
|
---|
| 421 | * Creates a new async I/O manager.
|
---|
| 422 | *
|
---|
| 423 | * @returns VBox status code.
|
---|
| 424 | * @param pEpClass Pointer to the endpoint class data.
|
---|
| 425 | * @param ppAioMgr Where to store the pointer to the new async I/O manager on success.
|
---|
[27299] | 426 | * @param enmMgrType Wanted manager type - can be overwritten by the global override.
|
---|
[20167] | 427 | */
|
---|
[27299] | 428 | int pdmacFileAioMgrCreate(PPDMASYNCCOMPLETIONEPCLASSFILE pEpClass, PPPDMACEPFILEMGR ppAioMgr,
|
---|
| 429 | PDMACEPFILEMGRTYPE enmMgrType)
|
---|
[20167] | 430 | {
|
---|
| 431 | LogFlowFunc((": Entered\n"));
|
---|
| 432 |
|
---|
[39031] | 433 | PPDMACEPFILEMGR pAioMgrNew;
|
---|
| 434 | int rc = MMR3HeapAllocZEx(pEpClass->Core.pVM, MM_TAG_PDM_ASYNC_COMPLETION, sizeof(PDMACEPFILEMGR), (void **)&pAioMgrNew);
|
---|
[20167] | 435 | if (RT_SUCCESS(rc))
|
---|
| 436 | {
|
---|
[27299] | 437 | if (enmMgrType < pEpClass->enmMgrTypeOverride)
|
---|
| 438 | pAioMgrNew->enmMgrType = enmMgrType;
|
---|
| 439 | else
|
---|
| 440 | pAioMgrNew->enmMgrType = pEpClass->enmMgrTypeOverride;
|
---|
[20167] | 441 |
|
---|
[36001] | 442 | pAioMgrNew->msBwLimitExpired = RT_INDEFINITE_WAIT;
|
---|
| 443 |
|
---|
[20167] | 444 | rc = RTSemEventCreate(&pAioMgrNew->EventSem);
|
---|
| 445 | if (RT_SUCCESS(rc))
|
---|
| 446 | {
|
---|
| 447 | rc = RTSemEventCreate(&pAioMgrNew->EventSemBlock);
|
---|
| 448 | if (RT_SUCCESS(rc))
|
---|
| 449 | {
|
---|
| 450 | rc = RTCritSectInit(&pAioMgrNew->CritSectBlockingEvent);
|
---|
| 451 | if (RT_SUCCESS(rc))
|
---|
| 452 | {
|
---|
[21496] | 453 | /* Init the rest of the manager. */
|
---|
[27299] | 454 | if (pAioMgrNew->enmMgrType != PDMACEPFILEMGRTYPE_SIMPLE)
|
---|
[22309] | 455 | rc = pdmacFileAioMgrNormalInit(pAioMgrNew);
|
---|
| 456 |
|
---|
[20167] | 457 | if (RT_SUCCESS(rc))
|
---|
| 458 | {
|
---|
[22309] | 459 | pAioMgrNew->enmState = PDMACEPFILEMGRSTATE_RUNNING;
|
---|
| 460 |
|
---|
[21496] | 461 | rc = RTThreadCreateF(&pAioMgrNew->Thread,
|
---|
[27299] | 462 | pAioMgrNew->enmMgrType == PDMACEPFILEMGRTYPE_SIMPLE
|
---|
[21496] | 463 | ? pdmacFileAioMgrFailsafe
|
---|
| 464 | : pdmacFileAioMgrNormal,
|
---|
| 465 | pAioMgrNew,
|
---|
| 466 | 0,
|
---|
| 467 | RTTHREADTYPE_IO,
|
---|
| 468 | 0,
|
---|
| 469 | "AioMgr%d-%s", pEpClass->cAioMgrs,
|
---|
[27299] | 470 | pAioMgrNew->enmMgrType == PDMACEPFILEMGRTYPE_SIMPLE
|
---|
[21496] | 471 | ? "F"
|
---|
| 472 | : "N");
|
---|
| 473 | if (RT_SUCCESS(rc))
|
---|
| 474 | {
|
---|
| 475 | /* Link it into the list. */
|
---|
| 476 | RTCritSectEnter(&pEpClass->CritSect);
|
---|
| 477 | pAioMgrNew->pNext = pEpClass->pAioMgrHead;
|
---|
| 478 | if (pEpClass->pAioMgrHead)
|
---|
| 479 | pEpClass->pAioMgrHead->pPrev = pAioMgrNew;
|
---|
| 480 | pEpClass->pAioMgrHead = pAioMgrNew;
|
---|
| 481 | pEpClass->cAioMgrs++;
|
---|
| 482 | RTCritSectLeave(&pEpClass->CritSect);
|
---|
[20167] | 483 |
|
---|
[21496] | 484 | *ppAioMgr = pAioMgrNew;
|
---|
[20167] | 485 |
|
---|
[21496] | 486 | Log(("PDMAC: Successfully created new file AIO Mgr {%s}\n", RTThreadGetName(pAioMgrNew->Thread)));
|
---|
| 487 | return VINF_SUCCESS;
|
---|
| 488 | }
|
---|
| 489 | pdmacFileAioMgrNormalDestroy(pAioMgrNew);
|
---|
[20167] | 490 | }
|
---|
| 491 | RTCritSectDelete(&pAioMgrNew->CritSectBlockingEvent);
|
---|
| 492 | }
|
---|
| 493 | RTSemEventDestroy(pAioMgrNew->EventSem);
|
---|
| 494 | }
|
---|
| 495 | RTSemEventDestroy(pAioMgrNew->EventSemBlock);
|
---|
| 496 | }
|
---|
| 497 | MMR3HeapFree(pAioMgrNew);
|
---|
| 498 | }
|
---|
| 499 |
|
---|
| 500 | LogFlowFunc((": Leave rc=%Rrc\n", rc));
|
---|
| 501 |
|
---|
| 502 | return rc;
|
---|
| 503 | }
|
---|
| 504 |
|
---|
| 505 | /**
|
---|
| 506 | * Destroys a async I/O manager.
|
---|
| 507 | *
|
---|
| 508 | * @returns nothing.
|
---|
| 509 | * @param pAioMgr The async I/O manager to destroy.
|
---|
| 510 | */
|
---|
| 511 | static void pdmacFileAioMgrDestroy(PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile, PPDMACEPFILEMGR pAioMgr)
|
---|
| 512 | {
|
---|
| 513 | int rc = pdmacFileAioMgrShutdown(pAioMgr);
|
---|
| 514 | AssertRC(rc);
|
---|
| 515 |
|
---|
| 516 | /* Unlink from the list. */
|
---|
| 517 | rc = RTCritSectEnter(&pEpClassFile->CritSect);
|
---|
| 518 | AssertRC(rc);
|
---|
| 519 |
|
---|
| 520 | PPDMACEPFILEMGR pPrev = pAioMgr->pPrev;
|
---|
| 521 | PPDMACEPFILEMGR pNext = pAioMgr->pNext;
|
---|
| 522 |
|
---|
| 523 | if (pPrev)
|
---|
| 524 | pPrev->pNext = pNext;
|
---|
| 525 | else
|
---|
| 526 | pEpClassFile->pAioMgrHead = pNext;
|
---|
| 527 |
|
---|
| 528 | if (pNext)
|
---|
| 529 | pNext->pPrev = pPrev;
|
---|
| 530 |
|
---|
| 531 | pEpClassFile->cAioMgrs--;
|
---|
| 532 | rc = RTCritSectLeave(&pEpClassFile->CritSect);
|
---|
| 533 | AssertRC(rc);
|
---|
| 534 |
|
---|
[33540] | 535 | /* Free the resources. */
|
---|
[20167] | 536 | RTCritSectDelete(&pAioMgr->CritSectBlockingEvent);
|
---|
| 537 | RTSemEventDestroy(pAioMgr->EventSem);
|
---|
[27299] | 538 | if (pAioMgr->enmMgrType != PDMACEPFILEMGRTYPE_SIMPLE)
|
---|
[21496] | 539 | pdmacFileAioMgrNormalDestroy(pAioMgr);
|
---|
| 540 |
|
---|
[20167] | 541 | MMR3HeapFree(pAioMgr);
|
---|
| 542 | }
|
---|
| 543 |
|
---|
[27299] | 544 | static int pdmacFileMgrTypeFromName(const char *pszVal, PPDMACEPFILEMGRTYPE penmMgrType)
|
---|
| 545 | {
|
---|
| 546 | int rc = VINF_SUCCESS;
|
---|
| 547 |
|
---|
| 548 | if (!RTStrCmp(pszVal, "Simple"))
|
---|
| 549 | *penmMgrType = PDMACEPFILEMGRTYPE_SIMPLE;
|
---|
| 550 | else if (!RTStrCmp(pszVal, "Async"))
|
---|
| 551 | *penmMgrType = PDMACEPFILEMGRTYPE_ASYNC;
|
---|
| 552 | else
|
---|
| 553 | rc = VERR_CFGM_CONFIG_UNKNOWN_VALUE;
|
---|
| 554 |
|
---|
| 555 | return rc;
|
---|
| 556 | }
|
---|
| 557 |
|
---|
| 558 | static const char *pdmacFileMgrTypeToName(PDMACEPFILEMGRTYPE enmMgrType)
|
---|
| 559 | {
|
---|
| 560 | if (enmMgrType == PDMACEPFILEMGRTYPE_SIMPLE)
|
---|
| 561 | return "Simple";
|
---|
| 562 | if (enmMgrType == PDMACEPFILEMGRTYPE_ASYNC)
|
---|
| 563 | return "Async";
|
---|
| 564 |
|
---|
| 565 | return NULL;
|
---|
| 566 | }
|
---|
| 567 |
|
---|
| 568 | static int pdmacFileBackendTypeFromName(const char *pszVal, PPDMACFILEEPBACKEND penmBackendType)
|
---|
| 569 | {
|
---|
| 570 | int rc = VINF_SUCCESS;
|
---|
| 571 |
|
---|
| 572 | if (!RTStrCmp(pszVal, "Buffered"))
|
---|
| 573 | *penmBackendType = PDMACFILEEPBACKEND_BUFFERED;
|
---|
| 574 | else if (!RTStrCmp(pszVal, "NonBuffered"))
|
---|
| 575 | *penmBackendType = PDMACFILEEPBACKEND_NON_BUFFERED;
|
---|
| 576 | else
|
---|
| 577 | rc = VERR_CFGM_CONFIG_UNKNOWN_VALUE;
|
---|
| 578 |
|
---|
| 579 | return rc;
|
---|
| 580 | }
|
---|
| 581 |
|
---|
| 582 | static const char *pdmacFileBackendTypeToName(PDMACFILEEPBACKEND enmBackendType)
|
---|
| 583 | {
|
---|
| 584 | if (enmBackendType == PDMACFILEEPBACKEND_BUFFERED)
|
---|
| 585 | return "Buffered";
|
---|
| 586 | if (enmBackendType == PDMACFILEEPBACKEND_NON_BUFFERED)
|
---|
| 587 | return "NonBuffered";
|
---|
| 588 |
|
---|
| 589 | return NULL;
|
---|
| 590 | }
|
---|
| 591 |
|
---|
[30185] | 592 | /**
|
---|
| 593 | * Get the size of the given file.
|
---|
| 594 | * Works for block devices too.
|
---|
| 595 | *
|
---|
| 596 | * @returns VBox status code.
|
---|
| 597 | * @param hFile The file handle.
|
---|
| 598 | * @param pcbSize Where to store the size of the file on success.
|
---|
| 599 | */
|
---|
| 600 | static int pdmacFileEpNativeGetSize(RTFILE hFile, uint64_t *pcbSize)
|
---|
| 601 | {
|
---|
[39031] | 602 | uint64_t cbFile;
|
---|
| 603 | int rc = RTFileGetSize(hFile, &cbFile);
|
---|
| 604 | if (RT_SUCCESS(rc))
|
---|
[41434] | 605 | *pcbSize = cbFile;
|
---|
[30185] | 606 |
|
---|
| 607 | return rc;
|
---|
| 608 | }
|
---|
| 609 |
|
---|
[34431] | 610 | #ifdef VBOX_WITH_DEBUGGER
|
---|
[39031] | 611 |
|
---|
[34344] | 612 | /**
|
---|
[44399] | 613 | * @callback_method_impl{FNDBGCCMD, The '.injecterror' command.}
|
---|
[34344] | 614 | */
|
---|
[44399] | 615 | static DECLCALLBACK(int) pdmacEpFileErrorInject(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR pArgs, unsigned cArgs)
|
---|
[34344] | 616 | {
|
---|
[34431] | 617 | /*
|
---|
| 618 | * Validate input.
|
---|
| 619 | */
|
---|
[44399] | 620 | DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
|
---|
[35694] | 621 | DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, -1, cArgs == 3);
|
---|
| 622 | DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, pArgs[0].enmType == DBGCVAR_TYPE_STRING);
|
---|
| 623 | DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 1, pArgs[1].enmType == DBGCVAR_TYPE_STRING);
|
---|
| 624 | DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 2, pArgs[2].enmType == DBGCVAR_TYPE_NUMBER);
|
---|
[34431] | 625 |
|
---|
[35694] | 626 | PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile;
|
---|
[44399] | 627 | pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pUVM->pdm.s.apAsyncCompletionEndpointClass[PDMASYNCCOMPLETIONEPCLASSTYPE_FILE];
|
---|
[34431] | 628 |
|
---|
[34344] | 629 | /* Syntax is "read|write <filename> <status code>" */
|
---|
[35694] | 630 | bool fWrite;
|
---|
[34431] | 631 | if (!RTStrCmp(pArgs[0].u.pszString, "read"))
|
---|
[34344] | 632 | fWrite = false;
|
---|
[34431] | 633 | else if (!RTStrCmp(pArgs[0].u.pszString, "write"))
|
---|
[34344] | 634 | fWrite = true;
|
---|
| 635 | else
|
---|
[35694] | 636 | return DBGCCmdHlpFail(pCmdHlp, pCmd, "invalid transfer direction '%s'", pArgs[0].u.pszString);
|
---|
[34344] | 637 |
|
---|
[35694] | 638 | int32_t rcToInject = (int32_t)pArgs[2].u.u64Number;
|
---|
| 639 | if ((uint64_t)rcToInject != pArgs[2].u.u64Number)
|
---|
| 640 | return DBGCCmdHlpFail(pCmdHlp, pCmd, "The status code '%lld' is out of range", pArgs[0].u.u64Number);
|
---|
| 641 |
|
---|
| 642 | /*
|
---|
| 643 | * Search for the matching endpoint.
|
---|
| 644 | */
|
---|
[34431] | 645 | RTCritSectEnter(&pEpClassFile->Core.CritSect);
|
---|
[35694] | 646 |
|
---|
[34431] | 647 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEpClassFile->Core.pEndpointsHead;
|
---|
| 648 | while (pEpFile)
|
---|
| 649 | {
|
---|
| 650 | if (!RTStrCmp(pArgs[1].u.pszString, RTPathFilename(pEpFile->Core.pszUri)))
|
---|
| 651 | break;
|
---|
| 652 | pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEpFile->Core.pNext;
|
---|
| 653 | }
|
---|
[36799] | 654 |
|
---|
[34431] | 655 | if (pEpFile)
|
---|
[34344] | 656 | {
|
---|
[35694] | 657 | /*
|
---|
| 658 | * Do the job.
|
---|
| 659 | */
|
---|
[34431] | 660 | if (fWrite)
|
---|
| 661 | ASMAtomicXchgS32(&pEpFile->rcReqWrite, rcToInject);
|
---|
| 662 | else
|
---|
[35694] | 663 | ASMAtomicXchgS32(&pEpFile->rcReqRead, rcToInject);
|
---|
[34344] | 664 |
|
---|
[35694] | 665 | DBGCCmdHlpPrintf(pCmdHlp, "Injected %Rrc into '%s' for %s\n",
|
---|
| 666 | (int)rcToInject, pArgs[1].u.pszString, pArgs[0].u.pszString);
|
---|
[34431] | 667 | }
|
---|
[34344] | 668 |
|
---|
[34431] | 669 | RTCritSectLeave(&pEpClassFile->Core.CritSect);
|
---|
[35694] | 670 |
|
---|
| 671 | if (!pEpFile)
|
---|
| 672 | return DBGCCmdHlpFail(pCmdHlp, pCmd, "No file with name '%s' found", pArgs[1].u.pszString);
|
---|
[34431] | 673 | return VINF_SUCCESS;
|
---|
[34344] | 674 | }
|
---|
[36799] | 675 |
|
---|
| 676 | # ifdef PDM_ASYNC_COMPLETION_FILE_WITH_DELAY
|
---|
| 677 | /**
|
---|
[44399] | 678 | * @callback_method_impl{FNDBGCCMD, The '.injectdelay' command.}
|
---|
[36799] | 679 | */
|
---|
[44399] | 680 | static DECLCALLBACK(int) pdmacEpFileDelayInject(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR pArgs, unsigned cArgs)
|
---|
[36799] | 681 | {
|
---|
| 682 | /*
|
---|
| 683 | * Validate input.
|
---|
| 684 | */
|
---|
[44399] | 685 | DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
|
---|
[41469] | 686 | DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, -1, cArgs >= 3);
|
---|
[36799] | 687 | DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, pArgs[0].enmType == DBGCVAR_TYPE_STRING);
|
---|
| 688 | DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 1, pArgs[1].enmType == DBGCVAR_TYPE_STRING);
|
---|
| 689 | DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 2, pArgs[2].enmType == DBGCVAR_TYPE_NUMBER);
|
---|
| 690 |
|
---|
| 691 | PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile;
|
---|
[44399] | 692 | pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pUVM->pdm.s.apAsyncCompletionEndpointClass[PDMASYNCCOMPLETIONEPCLASSTYPE_FILE];
|
---|
[36799] | 693 |
|
---|
[41469] | 694 | /* Syntax is "read|write|flush|any <filename> <delay> [reqs]" */
|
---|
| 695 | PDMACFILEREQTYPEDELAY enmDelayType = PDMACFILEREQTYPEDELAY_ANY;
|
---|
[36799] | 696 | if (!RTStrCmp(pArgs[0].u.pszString, "read"))
|
---|
[41469] | 697 | enmDelayType = PDMACFILEREQTYPEDELAY_READ;
|
---|
[36799] | 698 | else if (!RTStrCmp(pArgs[0].u.pszString, "write"))
|
---|
[41469] | 699 | enmDelayType = PDMACFILEREQTYPEDELAY_WRITE;
|
---|
| 700 | else if (!RTStrCmp(pArgs[0].u.pszString, "flush"))
|
---|
| 701 | enmDelayType = PDMACFILEREQTYPEDELAY_FLUSH;
|
---|
| 702 | else if (!RTStrCmp(pArgs[0].u.pszString, "any"))
|
---|
| 703 | enmDelayType = PDMACFILEREQTYPEDELAY_ANY;
|
---|
[36799] | 704 | else
|
---|
| 705 | return DBGCCmdHlpFail(pCmdHlp, pCmd, "invalid transfer direction '%s'", pArgs[0].u.pszString);
|
---|
| 706 |
|
---|
| 707 | uint32_t msDelay = (uint32_t)pArgs[2].u.u64Number;
|
---|
| 708 | if ((uint64_t)msDelay != pArgs[2].u.u64Number)
|
---|
| 709 | return DBGCCmdHlpFail(pCmdHlp, pCmd, "The delay '%lld' is out of range", pArgs[0].u.u64Number);
|
---|
| 710 |
|
---|
[41469] | 711 | uint32_t cReqsDelay = 1;
|
---|
[43623] | 712 | uint32_t msJitter = 0;
|
---|
[43625] | 713 | if (cArgs >= 4)
|
---|
[43623] | 714 | msJitter = (uint32_t)pArgs[3].u.u64Number;
|
---|
| 715 | if (cArgs == 5)
|
---|
| 716 | cReqsDelay = (uint32_t)pArgs[4].u.u64Number;
|
---|
[36799] | 717 |
|
---|
| 718 | /*
|
---|
| 719 | * Search for the matching endpoint.
|
---|
| 720 | */
|
---|
| 721 | RTCritSectEnter(&pEpClassFile->Core.CritSect);
|
---|
| 722 |
|
---|
| 723 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEpClassFile->Core.pEndpointsHead;
|
---|
| 724 | while (pEpFile)
|
---|
| 725 | {
|
---|
| 726 | if (!RTStrCmp(pArgs[1].u.pszString, RTPathFilename(pEpFile->Core.pszUri)))
|
---|
| 727 | break;
|
---|
| 728 | pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEpFile->Core.pNext;
|
---|
| 729 | }
|
---|
| 730 |
|
---|
| 731 | if (pEpFile)
|
---|
| 732 | {
|
---|
[41469] | 733 | ASMAtomicWriteSize(&pEpFile->enmTypeDelay, enmDelayType);
|
---|
| 734 | ASMAtomicWriteU32(&pEpFile->msDelay, msDelay);
|
---|
[43623] | 735 | ASMAtomicWriteU32(&pEpFile->msJitter, msJitter);
|
---|
[41469] | 736 | ASMAtomicWriteU32(&pEpFile->cReqsDelay, cReqsDelay);
|
---|
[36799] | 737 |
|
---|
[41469] | 738 | DBGCCmdHlpPrintf(pCmdHlp, "Injected delay for the next %u requests of %u ms into '%s' for %s\n",
|
---|
| 739 | cReqsDelay, msDelay, pArgs[1].u.pszString, pArgs[0].u.pszString);
|
---|
[36799] | 740 | }
|
---|
| 741 |
|
---|
| 742 | RTCritSectLeave(&pEpClassFile->Core.CritSect);
|
---|
| 743 |
|
---|
| 744 | if (!pEpFile)
|
---|
| 745 | return DBGCCmdHlpFail(pCmdHlp, pCmd, "No file with name '%s' found", pArgs[1].u.pszString);
|
---|
| 746 | return VINF_SUCCESS;
|
---|
| 747 | }
|
---|
[43623] | 748 |
|
---|
| 749 | static DECLCALLBACK(void) pdmacR3TimerCallback(PVM pVM, PTMTIMER pTimer, void *pvUser)
|
---|
| 750 | {
|
---|
| 751 | uint64_t tsCur = RTTimeProgramMilliTS();
|
---|
| 752 | uint64_t cMilliesNext = UINT64_MAX;
|
---|
| 753 | PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pvUser;
|
---|
| 754 |
|
---|
| 755 | ASMAtomicWriteU64(&pEpClassFile->cMilliesNext, UINT64_MAX);
|
---|
| 756 |
|
---|
| 757 | /* Go through all endpoints and check for expired requests. */
|
---|
| 758 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEpClassFile->Core.pEndpointsHead;
|
---|
| 759 |
|
---|
| 760 | while (pEpFile)
|
---|
| 761 | {
|
---|
| 762 | /* Check for an expired delay. */
|
---|
| 763 | if (pEpFile->pDelayedHead != NULL)
|
---|
| 764 | {
|
---|
| 765 | PPDMASYNCCOMPLETIONTASKFILE pTaskFile = ASMAtomicXchgPtrT(&pEpFile->pDelayedHead, NULL, PPDMASYNCCOMPLETIONTASKFILE);
|
---|
| 766 |
|
---|
| 767 | while (pTaskFile)
|
---|
| 768 | {
|
---|
| 769 | PPDMASYNCCOMPLETIONTASKFILE pTmp = pTaskFile;
|
---|
| 770 | pTaskFile = pTaskFile->pDelayedNext;
|
---|
| 771 |
|
---|
| 772 | if (tsCur >= pTmp->tsDelayEnd)
|
---|
| 773 | {
|
---|
| 774 | LogRel(("AIOMgr: Delayed request %#p completed\n", pTmp));
|
---|
| 775 | pdmR3AsyncCompletionCompleteTask(&pTmp->Core, pTmp->rc, true);
|
---|
| 776 | }
|
---|
| 777 | else
|
---|
| 778 | {
|
---|
| 779 | /* Prepend to the delayed list again. */
|
---|
| 780 | PPDMASYNCCOMPLETIONTASKFILE pHead = NULL;
|
---|
| 781 |
|
---|
| 782 | if (pTmp->tsDelayEnd - tsCur < cMilliesNext)
|
---|
| 783 | cMilliesNext = pTmp->tsDelayEnd - tsCur;
|
---|
| 784 |
|
---|
| 785 | do
|
---|
| 786 | {
|
---|
| 787 | pHead = ASMAtomicReadPtrT(&pEpFile->pDelayedHead, PPDMASYNCCOMPLETIONTASKFILE);
|
---|
| 788 | pTmp->pDelayedNext = pHead;
|
---|
| 789 | } while (!ASMAtomicCmpXchgPtr(&pEpFile->pDelayedHead, pTmp, pHead));
|
---|
| 790 | }
|
---|
| 791 | }
|
---|
| 792 | }
|
---|
| 793 |
|
---|
| 794 | pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEpFile->Core.pNext;
|
---|
| 795 | }
|
---|
| 796 |
|
---|
| 797 | if (cMilliesNext < pEpClassFile->cMilliesNext)
|
---|
| 798 | {
|
---|
| 799 | ASMAtomicWriteU64(&pEpClassFile->cMilliesNext, cMilliesNext);
|
---|
| 800 | TMTimerSetMillies(pEpClassFile->pTimer, cMilliesNext);
|
---|
| 801 | }
|
---|
| 802 | }
|
---|
| 803 |
|
---|
[36799] | 804 | # endif /* PDM_ASYNC_COMPLETION_FILE_WITH_DELAY */
|
---|
| 805 |
|
---|
[35694] | 806 | #endif /* VBOX_WITH_DEBUGGER */
|
---|
[34344] | 807 |
|
---|
[20167] | 808 | static int pdmacFileInitialize(PPDMASYNCCOMPLETIONEPCLASS pClassGlobals, PCFGMNODE pCfgNode)
|
---|
| 809 | {
|
---|
| 810 | PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pClassGlobals;
|
---|
[39031] | 811 | RTFILEAIOLIMITS AioLimits; /** < Async I/O limitations. */
|
---|
[20167] | 812 |
|
---|
[39031] | 813 | int rc = RTFileAioGetLimits(&AioLimits);
|
---|
[22981] | 814 | #ifdef DEBUG
|
---|
| 815 | if (RT_SUCCESS(rc) && RTEnvExist("VBOX_ASYNC_IO_FAILBACK"))
|
---|
| 816 | rc = VERR_ENV_VAR_NOT_FOUND;
|
---|
| 817 | #endif
|
---|
[21496] | 818 | if (RT_FAILURE(rc))
|
---|
| 819 | {
|
---|
[27299] | 820 | LogRel(("AIO: Async I/O manager not supported (rc=%Rrc). Falling back to simple manager\n",
|
---|
[21496] | 821 | rc));
|
---|
[27299] | 822 | pEpClassFile->enmMgrTypeOverride = PDMACEPFILEMGRTYPE_SIMPLE;
|
---|
| 823 | pEpClassFile->enmEpBackendDefault = PDMACFILEEPBACKEND_BUFFERED;
|
---|
[21496] | 824 | }
|
---|
| 825 | else
|
---|
| 826 | {
|
---|
[22977] | 827 | pEpClassFile->uBitmaskAlignment = AioLimits.cbBufferAlignment ? ~((RTR3UINTPTR)AioLimits.cbBufferAlignment - 1) : RTR3UINTPTR_MAX;
|
---|
[21496] | 828 | pEpClassFile->cReqsOutstandingMax = AioLimits.cReqsOutstandingMax;
|
---|
[24360] | 829 |
|
---|
[27299] | 830 | if (pCfgNode)
|
---|
| 831 | {
|
---|
| 832 | /* Query the default manager type */
|
---|
| 833 | char *pszVal = NULL;
|
---|
| 834 | rc = CFGMR3QueryStringAllocDef(pCfgNode, "IoMgr", &pszVal, "Async");
|
---|
| 835 | AssertLogRelRCReturn(rc, rc);
|
---|
[24360] | 836 |
|
---|
[27299] | 837 | rc = pdmacFileMgrTypeFromName(pszVal, &pEpClassFile->enmMgrTypeOverride);
|
---|
| 838 | MMR3HeapFree(pszVal);
|
---|
| 839 | if (RT_FAILURE(rc))
|
---|
| 840 | return rc;
|
---|
| 841 |
|
---|
| 842 | LogRel(("AIOMgr: Default manager type is \"%s\"\n", pdmacFileMgrTypeToName(pEpClassFile->enmMgrTypeOverride)));
|
---|
| 843 |
|
---|
| 844 | /* Query default backend type */
|
---|
| 845 | rc = CFGMR3QueryStringAllocDef(pCfgNode, "FileBackend", &pszVal, "NonBuffered");
|
---|
| 846 | AssertLogRelRCReturn(rc, rc);
|
---|
| 847 |
|
---|
| 848 | rc = pdmacFileBackendTypeFromName(pszVal, &pEpClassFile->enmEpBackendDefault);
|
---|
| 849 | MMR3HeapFree(pszVal);
|
---|
| 850 | if (RT_FAILURE(rc))
|
---|
| 851 | return rc;
|
---|
| 852 |
|
---|
| 853 | LogRel(("AIOMgr: Default file backend is \"%s\"\n", pdmacFileBackendTypeToName(pEpClassFile->enmEpBackendDefault)));
|
---|
| 854 |
|
---|
| 855 | #ifdef RT_OS_LINUX
|
---|
| 856 | if ( pEpClassFile->enmMgrTypeOverride == PDMACEPFILEMGRTYPE_ASYNC
|
---|
| 857 | && pEpClassFile->enmEpBackendDefault == PDMACFILEEPBACKEND_BUFFERED)
|
---|
| 858 | {
|
---|
| 859 | LogRel(("AIOMgr: Linux does not support buffered async I/O, changing to non buffered\n"));
|
---|
| 860 | pEpClassFile->enmEpBackendDefault = PDMACFILEEPBACKEND_NON_BUFFERED;
|
---|
| 861 | }
|
---|
| 862 | #endif
|
---|
| 863 | }
|
---|
| 864 | else
|
---|
| 865 | {
|
---|
| 866 | /* No configuration supplied, set defaults */
|
---|
| 867 | pEpClassFile->enmEpBackendDefault = PDMACFILEEPBACKEND_NON_BUFFERED;
|
---|
[30131] | 868 | pEpClassFile->enmMgrTypeOverride = PDMACEPFILEMGRTYPE_ASYNC;
|
---|
[27299] | 869 | }
|
---|
[21496] | 870 | }
|
---|
[20167] | 871 |
|
---|
| 872 | /* Init critical section. */
|
---|
| 873 | rc = RTCritSectInit(&pEpClassFile->CritSect);
|
---|
[24359] | 874 |
|
---|
[34431] | 875 | #ifdef VBOX_WITH_DEBUGGER
|
---|
[34344] | 876 | /* Install the error injection handler. */
|
---|
| 877 | if (RT_SUCCESS(rc))
|
---|
| 878 | {
|
---|
[35694] | 879 | rc = DBGCRegisterCommands(&g_aCmds[0], RT_ELEMENTS(g_aCmds));
|
---|
[34344] | 880 | AssertRC(rc);
|
---|
| 881 | }
|
---|
[43623] | 882 |
|
---|
| 883 | #ifdef PDM_ASYNC_COMPLETION_FILE_WITH_DELAY
|
---|
| 884 | rc = TMR3TimerCreateInternal(pEpClassFile->Core.pVM, TMCLOCK_REAL, pdmacR3TimerCallback, pEpClassFile, "AC Delay", &pEpClassFile->pTimer);
|
---|
| 885 | AssertRC(rc);
|
---|
| 886 | pEpClassFile->cMilliesNext = UINT64_MAX;
|
---|
[34344] | 887 | #endif
|
---|
[43623] | 888 | #endif
|
---|
[34344] | 889 |
|
---|
[20167] | 890 | return rc;
|
---|
| 891 | }
|
---|
| 892 |
|
---|
| 893 | static void pdmacFileTerminate(PPDMASYNCCOMPLETIONEPCLASS pClassGlobals)
|
---|
| 894 | {
|
---|
| 895 | PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pClassGlobals;
|
---|
| 896 |
|
---|
| 897 | /* All endpoints should be closed at this point. */
|
---|
| 898 | AssertMsg(!pEpClassFile->Core.pEndpointsHead, ("There are still endpoints left\n"));
|
---|
| 899 |
|
---|
| 900 | /* Destroy all left async I/O managers. */
|
---|
| 901 | while (pEpClassFile->pAioMgrHead)
|
---|
| 902 | pdmacFileAioMgrDestroy(pEpClassFile, pEpClassFile->pAioMgrHead);
|
---|
| 903 |
|
---|
| 904 | RTCritSectDelete(&pEpClassFile->CritSect);
|
---|
| 905 | }
|
---|
| 906 |
|
---|
| 907 | static int pdmacFileEpInitialize(PPDMASYNCCOMPLETIONENDPOINT pEndpoint,
|
---|
| 908 | const char *pszUri, uint32_t fFlags)
|
---|
| 909 | {
|
---|
| 910 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEndpoint;
|
---|
| 911 | PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pEndpoint->pEpClass;
|
---|
[27299] | 912 | PDMACEPFILEMGRTYPE enmMgrType = pEpClassFile->enmMgrTypeOverride;
|
---|
| 913 | PDMACFILEEPBACKEND enmEpBackend = pEpClassFile->enmEpBackendDefault;
|
---|
[20167] | 914 |
|
---|
[36001] | 915 | AssertMsgReturn((fFlags & ~(PDMACEP_FILE_FLAGS_READ_ONLY | PDMACEP_FILE_FLAGS_DONT_LOCK | PDMACEP_FILE_FLAGS_HOST_CACHE_ENABLED)) == 0,
|
---|
[21496] | 916 | ("PDMAsyncCompletion: Invalid flag specified\n"), VERR_INVALID_PARAMETER);
|
---|
| 917 |
|
---|
[31173] | 918 | unsigned fFileFlags = RTFILE_O_OPEN;
|
---|
[20167] | 919 |
|
---|
[36001] | 920 | /*
|
---|
| 921 | * Revert to the simple manager and the buffered backend if
|
---|
| 922 | * the host cache should be enabled.
|
---|
| 923 | */
|
---|
| 924 | if (fFlags & PDMACEP_FILE_FLAGS_HOST_CACHE_ENABLED)
|
---|
| 925 | {
|
---|
| 926 | enmMgrType = PDMACEPFILEMGRTYPE_SIMPLE;
|
---|
| 927 | enmEpBackend = PDMACFILEEPBACKEND_BUFFERED;
|
---|
| 928 | }
|
---|
| 929 |
|
---|
[31173] | 930 | if (fFlags & PDMACEP_FILE_FLAGS_READ_ONLY)
|
---|
[31182] | 931 | fFileFlags |= RTFILE_O_READ | RTFILE_O_DENY_NONE;
|
---|
[31173] | 932 | else
|
---|
| 933 | {
|
---|
[31182] | 934 | fFileFlags |= RTFILE_O_READWRITE;
|
---|
[31173] | 935 |
|
---|
| 936 | /*
|
---|
| 937 | * Opened in read/write mode. Check whether the caller wants to
|
---|
| 938 | * avoid the lock. Return an error in case caching is enabled
|
---|
| 939 | * because this can lead to data corruption.
|
---|
| 940 | */
|
---|
| 941 | if (fFlags & PDMACEP_FILE_FLAGS_DONT_LOCK)
|
---|
[35308] | 942 | fFileFlags |= RTFILE_O_DENY_NONE;
|
---|
[31173] | 943 | else
|
---|
[31182] | 944 | fFileFlags |= RTFILE_O_DENY_WRITE;
|
---|
[31173] | 945 | }
|
---|
| 946 |
|
---|
[27495] | 947 | if (enmMgrType == PDMACEPFILEMGRTYPE_ASYNC)
|
---|
| 948 | fFileFlags |= RTFILE_O_ASYNC_IO;
|
---|
| 949 |
|
---|
[39031] | 950 | int rc;
|
---|
[27299] | 951 | if (enmEpBackend == PDMACFILEEPBACKEND_NON_BUFFERED)
|
---|
[22309] | 952 | {
|
---|
| 953 | /*
|
---|
| 954 | * We only disable the cache if the size of the file is a multiple of 512.
|
---|
| 955 | * Certain hosts like Windows, Linux and Solaris require that transfer sizes
|
---|
| 956 | * are aligned to the volume sector size.
|
---|
| 957 | * If not we just make sure that the data is written to disk with RTFILE_O_WRITE_THROUGH
|
---|
| 958 | * which will trash the host cache but ensures that the host cache will not
|
---|
| 959 | * contain dirty buffers.
|
---|
| 960 | */
|
---|
[37597] | 961 | RTFILE hFile;
|
---|
[37596] | 962 | rc = RTFileOpen(&hFile, pszUri, RTFILE_O_READ | RTFILE_O_OPEN | RTFILE_O_DENY_NONE);
|
---|
[22309] | 963 | if (RT_SUCCESS(rc))
|
---|
| 964 | {
|
---|
| 965 | uint64_t cbSize;
|
---|
| 966 |
|
---|
[37596] | 967 | rc = pdmacFileEpNativeGetSize(hFile, &cbSize);
|
---|
[30185] | 968 |
|
---|
[22309] | 969 | if (RT_SUCCESS(rc) && ((cbSize % 512) == 0))
|
---|
[27299] | 970 | fFileFlags |= RTFILE_O_NO_CACHE;
|
---|
| 971 | else
|
---|
[22309] | 972 | {
|
---|
[27299] | 973 | /* Downgrade to the buffered backend */
|
---|
| 974 | enmEpBackend = PDMACFILEEPBACKEND_BUFFERED;
|
---|
[27656] | 975 |
|
---|
| 976 | #ifdef RT_OS_LINUX
|
---|
| 977 | fFileFlags &= ~RTFILE_O_ASYNC_IO;
|
---|
| 978 | enmMgrType = PDMACEPFILEMGRTYPE_SIMPLE;
|
---|
| 979 | #endif
|
---|
[22309] | 980 | }
|
---|
[37596] | 981 | RTFileClose(hFile);
|
---|
[22309] | 982 | }
|
---|
| 983 | }
|
---|
| 984 |
|
---|
| 985 | /* Open with final flags. */
|
---|
[37596] | 986 | rc = RTFileOpen(&pEpFile->hFile, pszUri, fFileFlags);
|
---|
[39031] | 987 | if ( rc == VERR_INVALID_FUNCTION
|
---|
| 988 | || rc == VERR_INVALID_PARAMETER)
|
---|
[23013] | 989 | {
|
---|
[23958] | 990 | LogRel(("pdmacFileEpInitialize: RTFileOpen %s / %08x failed with %Rrc\n",
|
---|
| 991 | pszUri, fFileFlags, rc));
|
---|
[23013] | 992 | /*
|
---|
| 993 | * Solaris doesn't support directio on ZFS so far. :-\
|
---|
| 994 | * Trying to enable it returns VERR_INVALID_FUNCTION
|
---|
| 995 | * (ENOTTY). Remove it and hope for the best.
|
---|
| 996 | * ZFS supports write throttling in case applications
|
---|
| 997 | * write more data than can be synced to the disk
|
---|
| 998 | * without blocking the whole application.
|
---|
[23952] | 999 | *
|
---|
| 1000 | * On Linux we have the same problem with cifs.
|
---|
[23959] | 1001 | * Have to disable async I/O here too because it requires O_DIRECT.
|
---|
[23013] | 1002 | */
|
---|
| 1003 | fFileFlags &= ~RTFILE_O_NO_CACHE;
|
---|
[27299] | 1004 | enmEpBackend = PDMACFILEEPBACKEND_BUFFERED;
|
---|
[23013] | 1005 |
|
---|
[23959] | 1006 | #ifdef RT_OS_LINUX
|
---|
| 1007 | fFileFlags &= ~RTFILE_O_ASYNC_IO;
|
---|
[27299] | 1008 | enmMgrType = PDMACEPFILEMGRTYPE_SIMPLE;
|
---|
[23959] | 1009 | #endif
|
---|
| 1010 |
|
---|
[23013] | 1011 | /* Open again. */
|
---|
[37596] | 1012 | rc = RTFileOpen(&pEpFile->hFile, pszUri, fFileFlags);
|
---|
[23958] | 1013 |
|
---|
| 1014 | if (RT_FAILURE(rc))
|
---|
| 1015 | {
|
---|
| 1016 | LogRel(("pdmacFileEpInitialize: RTFileOpen %s / %08x failed AGAIN(!) with %Rrc\n",
|
---|
| 1017 | pszUri, fFileFlags, rc));
|
---|
| 1018 | }
|
---|
[23013] | 1019 | }
|
---|
| 1020 |
|
---|
[20167] | 1021 | if (RT_SUCCESS(rc))
|
---|
| 1022 | {
|
---|
[23013] | 1023 | pEpFile->fFlags = fFileFlags;
|
---|
| 1024 |
|
---|
[37596] | 1025 | rc = pdmacFileEpNativeGetSize(pEpFile->hFile, (uint64_t *)&pEpFile->cbFile);
|
---|
[20167] | 1026 | if (RT_SUCCESS(rc))
|
---|
| 1027 | {
|
---|
[22978] | 1028 | /* Initialize the segment cache */
|
---|
| 1029 | rc = MMR3HeapAllocZEx(pEpClassFile->Core.pVM, MM_TAG_PDM_ASYNC_COMPLETION,
|
---|
| 1030 | sizeof(PDMACTASKFILE),
|
---|
| 1031 | (void **)&pEpFile->pTasksFreeHead);
|
---|
| 1032 | if (RT_SUCCESS(rc))
|
---|
| 1033 | {
|
---|
| 1034 | PPDMACEPFILEMGR pAioMgr = NULL;
|
---|
[20167] | 1035 |
|
---|
[22978] | 1036 | pEpFile->pTasksFreeTail = pEpFile->pTasksFreeHead;
|
---|
[26671] | 1037 | pEpFile->cTasksCached = 0;
|
---|
[27299] | 1038 | pEpFile->enmBackendType = enmEpBackend;
|
---|
[30297] | 1039 | /*
|
---|
| 1040 | * Disable async flushes on Solaris for now.
|
---|
| 1041 | * They cause weird hangs which needs more investigations.
|
---|
| 1042 | */
|
---|
| 1043 | #ifndef RT_OS_SOLARIS
|
---|
[29121] | 1044 | pEpFile->fAsyncFlushSupported = true;
|
---|
[30297] | 1045 | #else
|
---|
| 1046 | pEpFile->fAsyncFlushSupported = false;
|
---|
| 1047 | #endif
|
---|
[20167] | 1048 |
|
---|
[27299] | 1049 | if (enmMgrType == PDMACEPFILEMGRTYPE_SIMPLE)
|
---|
[21496] | 1050 | {
|
---|
[27299] | 1051 | /* Simple mode. Every file has its own async I/O manager. */
|
---|
| 1052 | rc = pdmacFileAioMgrCreate(pEpClassFile, &pAioMgr, PDMACEPFILEMGRTYPE_SIMPLE);
|
---|
[21496] | 1053 | AssertRC(rc);
|
---|
| 1054 | }
|
---|
| 1055 | else
|
---|
| 1056 | {
|
---|
[24047] | 1057 | pAioMgr = pEpClassFile->pAioMgrHead;
|
---|
| 1058 |
|
---|
[27299] | 1059 | /* Check for an idling manager of the same type */
|
---|
| 1060 | while (pAioMgr)
|
---|
| 1061 | {
|
---|
| 1062 | if (pAioMgr->enmMgrType == enmMgrType)
|
---|
| 1063 | break;
|
---|
[24047] | 1064 | pAioMgr = pAioMgr->pNext;
|
---|
[27299] | 1065 | }
|
---|
[24047] | 1066 |
|
---|
| 1067 | if (!pAioMgr)
|
---|
[22978] | 1068 | {
|
---|
[27299] | 1069 | rc = pdmacFileAioMgrCreate(pEpClassFile, &pAioMgr, enmMgrType);
|
---|
[22978] | 1070 | AssertRC(rc);
|
---|
| 1071 | }
|
---|
[21496] | 1072 | }
|
---|
[20167] | 1073 |
|
---|
[26338] | 1074 | pEpFile->AioMgr.pTreeRangesLocked = (PAVLRFOFFTREE)RTMemAllocZ(sizeof(AVLRFOFFTREE));
|
---|
| 1075 | if (!pEpFile->AioMgr.pTreeRangesLocked)
|
---|
| 1076 | rc = VERR_NO_MEMORY;
|
---|
| 1077 | else
|
---|
| 1078 | {
|
---|
| 1079 | pEpFile->enmState = PDMASYNCCOMPLETIONENDPOINTFILESTATE_ACTIVE;
|
---|
[22309] | 1080 |
|
---|
[26338] | 1081 | /* Assign the endpoint to the thread. */
|
---|
| 1082 | rc = pdmacFileAioMgrAddEndpoint(pAioMgr, pEpFile);
|
---|
| 1083 | if (RT_FAILURE(rc))
|
---|
| 1084 | {
|
---|
| 1085 | RTMemFree(pEpFile->AioMgr.pTreeRangesLocked);
|
---|
| 1086 | MMR3HeapFree(pEpFile->pTasksFreeHead);
|
---|
| 1087 | }
|
---|
| 1088 | }
|
---|
[22978] | 1089 | }
|
---|
[20167] | 1090 | }
|
---|
| 1091 |
|
---|
| 1092 | if (RT_FAILURE(rc))
|
---|
[37596] | 1093 | RTFileClose(pEpFile->hFile);
|
---|
[20167] | 1094 | }
|
---|
| 1095 |
|
---|
[24278] | 1096 | #ifdef VBOX_WITH_STATISTICS
|
---|
| 1097 | if (RT_SUCCESS(rc))
|
---|
| 1098 | {
|
---|
| 1099 | STAMR3RegisterF(pEpClassFile->Core.pVM, &pEpFile->StatRead,
|
---|
| 1100 | STAMTYPE_PROFILE_ADV, STAMVISIBILITY_ALWAYS,
|
---|
| 1101 | STAMUNIT_TICKS_PER_CALL, "Time taken to read from the endpoint",
|
---|
| 1102 | "/PDM/AsyncCompletion/File/%s/Read", RTPathFilename(pEpFile->Core.pszUri));
|
---|
| 1103 |
|
---|
| 1104 | STAMR3RegisterF(pEpClassFile->Core.pVM, &pEpFile->StatWrite,
|
---|
| 1105 | STAMTYPE_PROFILE_ADV, STAMVISIBILITY_ALWAYS,
|
---|
| 1106 | STAMUNIT_TICKS_PER_CALL, "Time taken to write to the endpoint",
|
---|
| 1107 | "/PDM/AsyncCompletion/File/%s/Write", RTPathFilename(pEpFile->Core.pszUri));
|
---|
| 1108 | }
|
---|
| 1109 | #endif
|
---|
| 1110 |
|
---|
[27474] | 1111 | if (RT_SUCCESS(rc))
|
---|
| 1112 | LogRel(("AIOMgr: Endpoint for file '%s' (flags %08x) created successfully\n", pszUri, pEpFile->fFlags));
|
---|
| 1113 |
|
---|
[20167] | 1114 | return rc;
|
---|
| 1115 | }
|
---|
| 1116 |
|
---|
[26338] | 1117 | static int pdmacFileEpRangesLockedDestroy(PAVLRFOFFNODECORE pNode, void *pvUser)
|
---|
| 1118 | {
|
---|
[39078] | 1119 | NOREF(pNode); NOREF(pvUser);
|
---|
[26338] | 1120 | AssertMsgFailed(("The locked ranges tree should be empty at that point\n"));
|
---|
| 1121 | return VINF_SUCCESS;
|
---|
| 1122 | }
|
---|
| 1123 |
|
---|
[20167] | 1124 | static int pdmacFileEpClose(PPDMASYNCCOMPLETIONENDPOINT pEndpoint)
|
---|
| 1125 | {
|
---|
[39031] | 1126 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEndpoint;
|
---|
| 1127 | PPDMASYNCCOMPLETIONEPCLASSFILE pEpClassFile = (PPDMASYNCCOMPLETIONEPCLASSFILE)pEndpoint->pEpClass;
|
---|
[20167] | 1128 |
|
---|
| 1129 | /* Make sure that all tasks finished for this endpoint. */
|
---|
[39031] | 1130 | int rc = pdmacFileAioMgrCloseEndpoint(pEpFile->pAioMgr, pEpFile);
|
---|
[20167] | 1131 | AssertRC(rc);
|
---|
| 1132 |
|
---|
| 1133 | /*
|
---|
| 1134 | * If the async I/O manager is in failsafe mode this is the only endpoint
|
---|
| 1135 | * he processes and thus can be destroyed now.
|
---|
| 1136 | */
|
---|
[27299] | 1137 | if (pEpFile->pAioMgr->enmMgrType == PDMACEPFILEMGRTYPE_SIMPLE)
|
---|
[20167] | 1138 | pdmacFileAioMgrDestroy(pEpClassFile, pEpFile->pAioMgr);
|
---|
| 1139 |
|
---|
[22309] | 1140 | /* Free cached tasks. */
|
---|
| 1141 | PPDMACTASKFILE pTask = pEpFile->pTasksFreeHead;
|
---|
[20167] | 1142 |
|
---|
[22309] | 1143 | while (pTask)
|
---|
[20167] | 1144 | {
|
---|
[22309] | 1145 | PPDMACTASKFILE pTaskFree = pTask;
|
---|
| 1146 | pTask = pTask->pNext;
|
---|
| 1147 | MMR3HeapFree(pTaskFree);
|
---|
[20167] | 1148 | }
|
---|
| 1149 |
|
---|
[26338] | 1150 | /* Destroy the locked ranges tree now. */
|
---|
| 1151 | RTAvlrFileOffsetDestroy(pEpFile->AioMgr.pTreeRangesLocked, pdmacFileEpRangesLockedDestroy, NULL);
|
---|
| 1152 |
|
---|
[37596] | 1153 | RTFileClose(pEpFile->hFile);
|
---|
[24059] | 1154 |
|
---|
[24278] | 1155 | #ifdef VBOX_WITH_STATISTICS
|
---|
[46493] | 1156 | /* Not sure if this might be unnecessary because of similar statement in pdmR3AsyncCompletionStatisticsDeregister? */
|
---|
| 1157 | STAMR3DeregisterF(pEpClassFile->Core.pVM->pUVM, "/PDM/AsyncCompletion/File/%s/*", RTPathFilename(pEpFile->Core.pszUri));
|
---|
[24278] | 1158 | #endif
|
---|
| 1159 |
|
---|
[20167] | 1160 | return VINF_SUCCESS;
|
---|
| 1161 | }
|
---|
| 1162 |
|
---|
| 1163 | static int pdmacFileEpRead(PPDMASYNCCOMPLETIONTASK pTask,
|
---|
| 1164 | PPDMASYNCCOMPLETIONENDPOINT pEndpoint, RTFOFF off,
|
---|
[28065] | 1165 | PCRTSGSEG paSegments, size_t cSegments,
|
---|
[20167] | 1166 | size_t cbRead)
|
---|
| 1167 | {
|
---|
[22309] | 1168 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEndpoint;
|
---|
| 1169 |
|
---|
[28947] | 1170 | LogFlowFunc(("pTask=%#p pEndpoint=%#p off=%RTfoff paSegments=%#p cSegments=%zu cbRead=%zu\n",
|
---|
| 1171 | pTask, pEndpoint, off, paSegments, cSegments, cbRead));
|
---|
| 1172 |
|
---|
[39681] | 1173 | if (RT_UNLIKELY((uint64_t)off + cbRead > pEpFile->cbFile))
|
---|
[39679] | 1174 | return VERR_EOF;
|
---|
| 1175 |
|
---|
[24278] | 1176 | STAM_PROFILE_ADV_START(&pEpFile->StatRead, Read);
|
---|
[38886] | 1177 | pdmacFileEpTaskInit(pTask, cbRead);
|
---|
[39031] | 1178 | int rc = pdmacFileEpTaskInitiate(pTask, pEndpoint, off, paSegments, cSegments, cbRead,
|
---|
| 1179 | PDMACTASKFILETRANSFER_READ);
|
---|
[24278] | 1180 | STAM_PROFILE_ADV_STOP(&pEpFile->StatRead, Read);
|
---|
| 1181 |
|
---|
| 1182 | return rc;
|
---|
[20167] | 1183 | }
|
---|
| 1184 |
|
---|
| 1185 | static int pdmacFileEpWrite(PPDMASYNCCOMPLETIONTASK pTask,
|
---|
| 1186 | PPDMASYNCCOMPLETIONENDPOINT pEndpoint, RTFOFF off,
|
---|
[28065] | 1187 | PCRTSGSEG paSegments, size_t cSegments,
|
---|
[20167] | 1188 | size_t cbWrite)
|
---|
| 1189 | {
|
---|
[22309] | 1190 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEndpoint;
|
---|
| 1191 |
|
---|
| 1192 | if (RT_UNLIKELY(pEpFile->fReadonly))
|
---|
| 1193 | return VERR_NOT_SUPPORTED;
|
---|
| 1194 |
|
---|
[24278] | 1195 | STAM_PROFILE_ADV_START(&pEpFile->StatWrite, Write);
|
---|
| 1196 |
|
---|
[28947] | 1197 | pdmacFileEpTaskInit(pTask, cbWrite);
|
---|
| 1198 |
|
---|
[39031] | 1199 | int rc = pdmacFileEpTaskInitiate(pTask, pEndpoint, off, paSegments, cSegments, cbWrite,
|
---|
| 1200 | PDMACTASKFILETRANSFER_WRITE);
|
---|
[24278] | 1201 |
|
---|
| 1202 | STAM_PROFILE_ADV_STOP(&pEpFile->StatWrite, Write);
|
---|
| 1203 |
|
---|
| 1204 | return rc;
|
---|
[20167] | 1205 | }
|
---|
| 1206 |
|
---|
| 1207 | static int pdmacFileEpFlush(PPDMASYNCCOMPLETIONTASK pTask,
|
---|
| 1208 | PPDMASYNCCOMPLETIONENDPOINT pEndpoint)
|
---|
| 1209 | {
|
---|
[39031] | 1210 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEndpoint;
|
---|
| 1211 | PPDMASYNCCOMPLETIONTASKFILE pTaskFile = (PPDMASYNCCOMPLETIONTASKFILE)pTask;
|
---|
[20167] | 1212 |
|
---|
[22309] | 1213 | if (RT_UNLIKELY(pEpFile->fReadonly))
|
---|
| 1214 | return VERR_NOT_SUPPORTED;
|
---|
[20167] | 1215 |
|
---|
[29121] | 1216 | pdmacFileEpTaskInit(pTask, 0);
|
---|
[22309] | 1217 |
|
---|
[29121] | 1218 | PPDMACTASKFILE pIoTask = pdmacFileTaskAlloc(pEpFile);
|
---|
| 1219 | if (RT_UNLIKELY(!pIoTask))
|
---|
| 1220 | return VERR_NO_MEMORY;
|
---|
| 1221 |
|
---|
| 1222 | pIoTask->pEndpoint = pEpFile;
|
---|
| 1223 | pIoTask->enmTransferType = PDMACTASKFILETRANSFER_FLUSH;
|
---|
| 1224 | pIoTask->pvUser = pTaskFile;
|
---|
| 1225 | pIoTask->pfnCompleted = pdmacFileEpTaskCompleted;
|
---|
| 1226 | pdmacFileEpAddTask(pEpFile, pIoTask);
|
---|
| 1227 |
|
---|
| 1228 | return VINF_AIO_TASK_PENDING;
|
---|
[20167] | 1229 | }
|
---|
| 1230 |
|
---|
| 1231 | static int pdmacFileEpGetSize(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, uint64_t *pcbSize)
|
---|
| 1232 | {
|
---|
| 1233 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEndpoint;
|
---|
| 1234 |
|
---|
[35308] | 1235 | *pcbSize = ASMAtomicReadU64(&pEpFile->cbFile);
|
---|
[22757] | 1236 |
|
---|
| 1237 | return VINF_SUCCESS;
|
---|
[20167] | 1238 | }
|
---|
| 1239 |
|
---|
[27738] | 1240 | static int pdmacFileEpSetSize(PPDMASYNCCOMPLETIONENDPOINT pEndpoint, uint64_t cbSize)
|
---|
| 1241 | {
|
---|
[39679] | 1242 | int rc;
|
---|
[27738] | 1243 | PPDMASYNCCOMPLETIONENDPOINTFILE pEpFile = (PPDMASYNCCOMPLETIONENDPOINTFILE)pEndpoint;
|
---|
| 1244 |
|
---|
[39679] | 1245 | rc = RTFileSetSize(pEpFile->hFile, cbSize);
|
---|
| 1246 | if (RT_SUCCESS(rc))
|
---|
| 1247 | ASMAtomicWriteU64(&pEpFile->cbFile, cbSize);
|
---|
| 1248 |
|
---|
| 1249 | return rc;
|
---|
[27738] | 1250 | }
|
---|
| 1251 |
|
---|
[20167] | 1252 | const PDMASYNCCOMPLETIONEPCLASSOPS g_PDMAsyncCompletionEndpointClassFile =
|
---|
| 1253 | {
|
---|
| 1254 | /* u32Version */
|
---|
| 1255 | PDMAC_EPCLASS_OPS_VERSION,
|
---|
| 1256 | /* pcszName */
|
---|
| 1257 | "File",
|
---|
| 1258 | /* enmClassType */
|
---|
| 1259 | PDMASYNCCOMPLETIONEPCLASSTYPE_FILE,
|
---|
| 1260 | /* cbEndpointClassGlobal */
|
---|
| 1261 | sizeof(PDMASYNCCOMPLETIONEPCLASSFILE),
|
---|
| 1262 | /* cbEndpoint */
|
---|
| 1263 | sizeof(PDMASYNCCOMPLETIONENDPOINTFILE),
|
---|
| 1264 | /* cbTask */
|
---|
| 1265 | sizeof(PDMASYNCCOMPLETIONTASKFILE),
|
---|
| 1266 | /* pfnInitialize */
|
---|
| 1267 | pdmacFileInitialize,
|
---|
| 1268 | /* pfnTerminate */
|
---|
| 1269 | pdmacFileTerminate,
|
---|
| 1270 | /* pfnEpInitialize. */
|
---|
| 1271 | pdmacFileEpInitialize,
|
---|
| 1272 | /* pfnEpClose */
|
---|
| 1273 | pdmacFileEpClose,
|
---|
| 1274 | /* pfnEpRead */
|
---|
| 1275 | pdmacFileEpRead,
|
---|
| 1276 | /* pfnEpWrite */
|
---|
| 1277 | pdmacFileEpWrite,
|
---|
| 1278 | /* pfnEpFlush */
|
---|
| 1279 | pdmacFileEpFlush,
|
---|
| 1280 | /* pfnEpGetSize */
|
---|
| 1281 | pdmacFileEpGetSize,
|
---|
[27738] | 1282 | /* pfnEpSetSize */
|
---|
| 1283 | pdmacFileEpSetSize,
|
---|
[20167] | 1284 | /* u32VersionEnd */
|
---|
| 1285 | PDMAC_EPCLASS_OPS_VERSION
|
---|
| 1286 | };
|
---|
| 1287 |
|
---|