Storage/Debug/VDDbgIoLog.cpp

	VDDbgIoLog.cpp revision 3f8f486a6133cd77aaa32bb47908a351ee14a967
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/* $Id$ */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/** @file
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync *
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * VD Debug library - I/O logger.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/*
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * Copyright (C) 2011 Oracle Corporation
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync *
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * available from http://www.virtualbox.org. This file is free software;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * you can redistribute it and/or modify it under the terms of the GNU
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * General Public License (GPL) as published by the Free Software
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/*******************************************************************************
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync*   Header Files                                                               *
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync*******************************************************************************/
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#define LOGGROUP LOGGROUP_DEFAULT
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#include <VBox/vddbg.h>
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#include <VBox/err.h>
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#include <VBox/log.h>
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#include <iprt/mem.h>
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#include <iprt/memcache.h>
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#include <iprt/file.h>
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#include <iprt/string.h>
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#include <iprt/semaphore.h>
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/*******************************************************************************
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync*   Structures in a I/O log file, little endian                                *
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync*******************************************************************************/
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/**
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * I/O log header.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#pragma pack(1)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsynctypedef struct IoLogHeader
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Magic string */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    char        szMagic[8];
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Flags for the log file. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint32_t    fFlags;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Id counter. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t    u64Id;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync} IoLogHeader;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#pragma pack()
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#define VDIOLOG_MAGIC "VDIOLOG"
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/** Event type - I/O request start. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#define VDIOLOG_EVENT_START    0x01
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/** Event type - I/O request complete. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#define VDIOLOG_EVENT_COMPLETE 0x02
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/**
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * I/O log entry marking the start of a new I/O transaction.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#pragma pack(1)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsynctypedef struct IoLogEntryStart
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Event type. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    uint32_t    u32Type;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    /** Transfer type. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    uint32_t    u32ReqType;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Flag whether this is a sync or async request. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint8_t     u8AsyncIo;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Id of the entry. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t    u64Id;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    /** Type dependent data. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    union
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        /** I/O. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        struct
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            /** Start offset. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            uint64_t    u64Off;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            /** Size of the request. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            uint64_t    u64IoSize;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        } Io;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        /** Discard */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        struct
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            /** Number of ranges to discard. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            uint32_t    cRanges;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        } Discard;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    };
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync} IoLogEntryStart;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#pragma pack()
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/**
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * I/O log entry markign the completion of an I/O transaction.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#pragma pack(1)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsynctypedef struct IoLogEntryComplete
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Event type. */
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync    uint32_t    u32Type;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Id of the matching start entry. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t    u64Id;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Status code the request completed with */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int32_t     i32Rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Number of milliseconds the request needed to complete. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t    msDuration;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Number of bytes of data following this entry. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t    u64IoBuffer;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync} IoLogEntryComplete;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync#pragma pack()
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync#pragma pack(1)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsynctypedef struct IoLogEntryDiscard
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync{
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    /** Start offset. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    uint64_t    u64Off;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    /** Number of bytes to discard. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    uint32_t    u32Discard;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync} IoLogEntryDiscard;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync#pragma pack()
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/*******************************************************************************
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync*   Constants And Macros, Structures and Typedefs                              *
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync*******************************************************************************/
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/**
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * I/O logger instance data.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsynctypedef struct VDIOLOGGERINT
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** File handle. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTFILE         hFile;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Current offset to append new entries to. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t       offWriteNext;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Offset to read the next entry from. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t       offReadNext;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Flags given during creation. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint32_t       fFlags;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Id for the next entry. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t       idNext;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Memory cache for the I/O log entries. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTMEMCACHE     hMemCacheIoLogEntries;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Mutex section protecting the logger. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTSEMFASTMUTEX hMtx;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Cached event type of the next event. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    uint32_t       u32EventTypeNext;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    /** Cached request type of the next request. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    VDDBGIOLOGREQ  enmReqTypeNext;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync} VDIOLOGGERINT;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/** Pointer to the internal I/O logger instance data. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsynctypedef VDIOLOGGERINT *PVDIOLOGGERINT;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/**
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * I/O log entry data.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsynctypedef struct VDIOLOGENTINT
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Id of the start entry. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t       idStart;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Timestamnp when the request started. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    uint64_t       tsStart;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /** Size of the buffer to write on success. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    size_t         cbIo;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync} VDIOLOGENTINT;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/** Pointer to the internal I/O log entry data. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsynctypedef VDIOLOGENTINT *PVDIOLOGENTINT;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/*******************************************************************************
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync*   Internal Functions                                                         *
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync*******************************************************************************/
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/**
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * Creates a new empty I/O logger.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync *
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * @returns VBox status code.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * @param   ppIoLogger    Where to store the new I/O logger handle.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncstatic int vddbgIoLoggerCreate(PVDIOLOGGERINT *ppIoLogger)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = NULL;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    pIoLogger = (PVDIOLOGGERINT)RTMemAllocZ(sizeof(VDIOLOGGERINT));
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    if (pIoLogger)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = RTSemFastMutexCreate(&pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            rc = RTMemCacheCreate(&pIoLogger->hMemCacheIoLogEntries, sizeof(VDIOLOGENTINT),
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                                  0, UINT32_MAX, NULL, NULL, NULL, 0);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                *ppIoLogger = pIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        RTMemFree(pIoLogger);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = VERR_NO_MEMORY;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/**
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * Update the header of the I/O logger to the current state.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync *
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * @returns VBox status code.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * @param   pIoLogger    The I/O logger to update.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncstatic int vddbgIoLoggerHeaderUpdate(PVDIOLOGGERINT pIoLogger)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    IoLogHeader Hdr;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    memcpy(Hdr.szMagic, VDIOLOG_MAGIC, sizeof(Hdr.szMagic));
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    Hdr.fFlags = RT_H2LE_U32(pIoLogger->fFlags);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    Hdr.u64Id  = RT_H2LE_U64(pIoLogger->idNext);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = RTFileWriteAt(pIoLogger->hFile, 0, &Hdr, sizeof(Hdr), NULL);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync/**
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * Writes data from the given S/G buffer into the I/O log.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync *
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * @returns VBox status code.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * @param   pIoLogger    The I/O logger to use.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * @param   off          The start offset in the log to write to.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * @param   pSgBuf       The S/G buffer to write.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync * @param   cbSgBuf      How much data to write.
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncstatic int vddbgIoLogWriteSgBuf(PVDIOLOGGERINT pIoLogger, uint64_t off, PCRTSGBUF pSgBuf, size_t cbSgBuf)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTSGBUF SgBuf;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTSgBufClone(&SgBuf, pSgBuf);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    while (cbSgBuf)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        void *pvSeg;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        size_t cbSeg = cbSgBuf;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        pvSeg = RTSgBufGetNextSegment(&SgBuf, &cbSeg);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        AssertPtrBreakStmt(pvSeg, rc = VERR_INTERNAL_ERROR);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = RTFileWriteAt(pIoLogger->hFile, off, pvSeg, cbSeg, NULL);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (RT_FAILURE(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            break;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        cbSgBuf -= cbSeg;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        off += cbSeg;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncVBOXDDU_DECL(int) VDDbgIoLogCreate(PVDIOLOGGER phIoLogger, const char *pszFilename, uint32_t fFlags)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = NULL;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(phIoLogger, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertReturn(!(fFlags & ~VDDBG_IOLOG_VALID_MASK), VERR_INVALID_PARAMETER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = vddbgIoLoggerCreate(&pIoLogger);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        pIoLogger->fFlags = fFlags;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        pIoLogger->hFile = NIL_RTFILE;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        /* Create new log. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = RTFileOpen(&pIoLogger->hFile, pszFilename, RTFILE_O_DENY_NONE | RTFILE_O_CREATE | RTFILE_O_WRITE | RTFILE_O_READ);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            rc = vddbgIoLoggerHeaderUpdate(pIoLogger);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->offWriteNext = sizeof(IoLogHeader);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->offReadNext = sizeof(IoLogHeader);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            *phIoLogger = pIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            if (pIoLogger->hFile != NIL_RTFILE)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                RTFileClose(pIoLogger->hFile);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            RTMemFree(pIoLogger);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncVBOXDDU_DECL(int) VDDbgIoLogOpen(PVDIOLOGGER phIoLogger, const char *pszFilename)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = NULL;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(phIoLogger, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = vddbgIoLoggerCreate(&pIoLogger);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        /* open existing log. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = RTFileOpen(&pIoLogger->hFile, pszFilename, RTFILE_O_DENY_NONE | RTFILE_O_OPEN | RTFILE_O_WRITE | RTFILE_O_READ);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            IoLogHeader Hdr;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            uint64_t cbLog;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            rc = RTFileGetSize(pIoLogger->hFile, &cbLog);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            /* Read the header. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                rc = RTFileRead(pIoLogger->hFile, &Hdr, sizeof(Hdr), NULL);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            if (   RT_SUCCESS(rc)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                && !memcmp(Hdr.szMagic, VDIOLOG_MAGIC, sizeof(Hdr.szMagic)))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->fFlags = RT_LE2H_U32(Hdr.fFlags);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->offWriteNext = cbLog;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->offReadNext  = sizeof(Hdr);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->idNext       = RT_LE2H_U64(Hdr.u64Id);
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync                *phIoLogger = pIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            else if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                rc = VERR_INVALID_PARAMETER;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncVBOXDDU_DECL(void) VDDbgIoLogDestroy(VDIOLOGGER hIoLogger)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturnVoid(pIoLogger);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    vddbgIoLoggerHeaderUpdate(pIoLogger);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTFileFlush(pIoLogger->hFile);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTFileClose(pIoLogger->hFile);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTMemCacheDestroy(pIoLogger->hMemCacheIoLogEntries);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTSemFastMutexDestroy(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTMemFree(pIoLogger);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncVBOXDDU_DECL(int) VDDbgIoLogCommit(VDIOLOGGER hIoLogger)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = vddbgIoLoggerHeaderUpdate(pIoLogger);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = RTFileFlush(pIoLogger->hFile);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncVBOXDDU_DECL(uint32_t) VDDbgIoLogGetFlags(VDIOLOGGER hIoLogger)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return pIoLogger->fFlags;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsyncVBOXDDU_DECL(int) VDDbgIoLogStart(VDIOLOGGER hIoLogger, bool fAsync, VDDBGIOLOGREQ enmTxDir, uint64_t off, size_t cbIo, PCRTSGBUF pSgBuf,
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                                  PVDIOLOGENT phIoLogEntry)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGENTINT pIoLogEntry = NULL;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(phIoLogEntry, VERR_INVALID_POINTER);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertReturn(enmTxDir > VDDBGIOLOGREQ_INVALID && enmTxDir <= VDDBGIOLOGREQ_FLUSH, VERR_INVALID_PARAMETER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = RTSemFastMutexRequest(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertRCReturn(rc, rc);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    pIoLogEntry = (PVDIOLOGENTINT)RTMemCacheAlloc(pIoLogger->hMemCacheIoLogEntries);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    if (pIoLogEntry)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        IoLogEntryStart Entry;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        pIoLogEntry->idStart = pIoLogger->idNext++;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Entry.u32Type       = VDIOLOG_EVENT_START;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Entry.u8AsyncIo    = fAsync ? 1 : 0;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Entry.u32ReqType   = enmTxDir;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Entry.u64Id        = RT_H2LE_U64(pIoLogEntry->idStart);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Entry.Io.u64Off    = RT_H2LE_U64(off);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Entry.Io.u64IoSize = RT_H2LE_U64(cbIo);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        /* Write new entry. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = RTFileWriteAt(pIoLogger->hFile, pIoLogger->offWriteNext, &Entry, sizeof(Entry), NULL);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            pIoLogger->offWriteNext += sizeof(Entry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            if (   enmTxDir == VDDBGIOLOGREQ_WRITE
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                && (pIoLogger->fFlags & VDDBG_IOLOG_LOG_DATA_WRITTEN))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                /* Write data. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                rc = vddbgIoLogWriteSgBuf(pIoLogger, pIoLogger->offWriteNext, pSgBuf, cbIo);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                if (RT_FAILURE(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                    pIoLogger->offWriteNext -= sizeof(Entry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                    rc = RTFileSetSize(pIoLogger->hFile, pIoLogger->offWriteNext);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                    pIoLogger->offWriteNext += cbIo;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            pIoLogEntry->tsStart = RTTimeProgramMilliTS();
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            if (   enmTxDir == VDDBGIOLOGREQ_READ
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                && (pIoLogger->fFlags & VDDBG_IOLOG_LOG_DATA_READ))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogEntry->cbIo = cbIo;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogEntry->cbIo = 0;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            *phIoLogEntry = pIoLogEntry;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            pIoLogger->idNext--;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            RTMemCacheFree(pIoLogger->hMemCacheIoLogEntries, pIoLogEntry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = VERR_NO_MEMORY;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTSemFastMutexRelease(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
3f8f486a6133cd77aaa32bb47908a351ee14a967vboxsyncVBOXDDU_DECL(int) VDDbgIoLogStartDiscard(VDIOLOGGER hIoLogger, bool fAsync, PCRTRANGE paRanges, unsigned cRanges,
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                                         PVDIOLOGENT phIoLogEntry)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync{
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    int rc = VINF_SUCCESS;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    PVDIOLOGENTINT pIoLogEntry = NULL;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertPtrReturn(phIoLogEntry, VERR_INVALID_POINTER);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    rc = RTSemFastMutexRequest(pIoLogger->hMtx);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertRCReturn(rc, rc);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    pIoLogEntry = (PVDIOLOGENTINT)RTMemCacheAlloc(pIoLogger->hMemCacheIoLogEntries);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    if (pIoLogEntry)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        IoLogEntryStart Entry;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        pIoLogEntry->idStart = pIoLogger->idNext++;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync        Entry.u32Type         = VDIOLOG_EVENT_START;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Entry.u8AsyncIo       = fAsync ? 1 : 0;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Entry.u32ReqType      = VDDBGIOLOGREQ_DISCARD;
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync        Entry.u64Id           = RT_H2LE_U64(pIoLogEntry->idStart);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Entry.Discard.cRanges = RT_H2LE_U32(cRanges);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        /* Write new entry. */
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        rc = RTFileWriteAt(pIoLogger->hFile, pIoLogger->offWriteNext, &Entry, sizeof(Entry), NULL);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        if (RT_SUCCESS(rc))
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            pIoLogger->offWriteNext += sizeof(Entry);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            IoLogEntryDiscard DiscardRange;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            for (unsigned i = 0; i < cRanges; i++)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                DiscardRange.u64Off = RT_H2LE_U64(paRanges[i].offStart);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                DiscardRange.u32Discard = RT_H2LE_U32(paRanges[i].cbRange);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                rc = RTFileWriteAt(pIoLogger->hFile, pIoLogger->offWriteNext + i*sizeof(DiscardRange),
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                                   &DiscardRange, sizeof(DiscardRange), NULL);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                if (RT_FAILURE(rc))
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                    break;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            if (RT_FAILURE(rc))
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                pIoLogger->offWriteNext -= sizeof(Entry);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                rc = RTFileSetSize(pIoLogger->hFile, pIoLogger->offWriteNext);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            else
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                pIoLogger->offWriteNext += cRanges * sizeof(DiscardRange);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        if (RT_SUCCESS(rc))
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            pIoLogEntry->tsStart = RTTimeProgramMilliTS();
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            pIoLogEntry->cbIo = 0;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            *phIoLogEntry = pIoLogEntry;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        else
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            pIoLogger->idNext--;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            RTMemCacheFree(pIoLogger->hMemCacheIoLogEntries, pIoLogEntry);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    else
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        rc = VERR_NO_MEMORY;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    RTSemFastMutexRelease(pIoLogger->hMtx);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    return rc;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync}
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncVBOXDDU_DECL(int) VDDbgIoLogComplete(VDIOLOGGER hIoLogger, VDIOLOGENT hIoLogEntry, int rcReq, PCRTSGBUF pSgBuf)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGENTINT pIoLogEntry = hIoLogEntry;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pIoLogEntry, VERR_INVALID_HANDLE);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = RTSemFastMutexRequest(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertRCReturn(rc, rc);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    IoLogEntryComplete Entry;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    Entry.u32Type     = VDIOLOG_EVENT_COMPLETE;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    Entry.u64Id       = RT_H2LE_U64(pIoLogEntry->idStart);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    Entry.msDuration  = RTTimeProgramMilliTS() - RT_H2LE_U64(pIoLogEntry->tsStart);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    Entry.i32Rc       = (int32_t)RT_H2LE_U32((uint32_t)rcReq);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    Entry.u64IoBuffer = RT_H2LE_U64(pIoLogEntry->cbIo);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    /* Write new entry. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = RTFileWriteAt(pIoLogger->hFile, pIoLogger->offWriteNext, &Entry, sizeof(Entry), NULL);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        pIoLogger->offWriteNext += sizeof(Entry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (pIoLogEntry->cbIo)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            rc = vddbgIoLogWriteSgBuf(pIoLogger, pIoLogger->offWriteNext, pSgBuf, pIoLogEntry->cbIo);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->offWriteNext += pIoLogEntry->cbIo;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->offWriteNext -= sizeof(Entry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                rc = RTFileSetSize(pIoLogger->hFile, pIoLogger->offWriteNext);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTMemCacheFree(pIoLogger->hMemCacheIoLogEntries, pIoLogEntry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTSemFastMutexRelease(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncVBOXDDU_DECL(int) VDDbgIoLogEventTypeGetNext(VDIOLOGGER hIoLogger, VDIOLOGEVENT *penmEvent)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(penmEvent, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = RTSemFastMutexRequest(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertRCReturn(rc, rc);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    if (pIoLogger->offReadNext == pIoLogger->offWriteNext)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        *penmEvent = VDIOLOGEVENT_END;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        RTSemFastMutexRelease(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        return VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    if (!pIoLogger->u32EventTypeNext)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        uint32_t abBuf[2];
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        rc = RTFileReadAt(pIoLogger->hFile, pIoLogger->offReadNext, &abBuf, sizeof(abBuf), NULL);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        if (RT_SUCCESS(rc))
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        {
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync            pIoLogger->u32EventTypeNext = abBuf[0];
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            pIoLogger->enmReqTypeNext   = (VDDBGIOLOGREQ)abBuf[1];
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Assert(pIoLogger->u32EventTypeNext != VDIOLOGEVENT_INVALID);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        switch (pIoLogger->u32EventTypeNext)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            case VDIOLOG_EVENT_START:
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                *penmEvent = VDIOLOGEVENT_START;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                break;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            case VDIOLOG_EVENT_COMPLETE:
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                *penmEvent = VDIOLOGEVENT_COMPLETE;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                break;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            default:
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                AssertMsgFailed(("Invalid event type %d\n", pIoLogger->u32EventTypeNext));
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTSemFastMutexRelease(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsyncVBOXDDU_DECL(int) VDDbgIoLogReqTypeGetNext(VDIOLOGGER hIoLogger, PVDDBGIOLOGREQ penmReq)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync{
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    int rc = VINF_SUCCESS;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertPtrReturn(penmReq, VERR_INVALID_POINTER);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    rc = RTSemFastMutexRequest(pIoLogger->hMtx);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertRCReturn(rc, rc);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    if (pIoLogger->offReadNext == pIoLogger->offWriteNext)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        *penmReq = VDDBGIOLOGREQ_INVALID;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        RTSemFastMutexRelease(pIoLogger->hMtx);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        return VERR_INVALID_STATE;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    if (RT_SUCCESS(rc))
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        Assert(pIoLogger->enmReqTypeNext != VDDBGIOLOGREQ_INVALID);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        *penmReq = pIoLogger->enmReqTypeNext;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    RTSemFastMutexRelease(pIoLogger->hMtx);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    return rc;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync}
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsyncVBOXDDU_DECL(int) VDDbgIoLogEventGetStart(VDIOLOGGER hIoLogger, uint64_t *pidEvent, bool *pfAsync,
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                                          uint64_t *poff, size_t *pcbIo, size_t cbBuf, void *pvBuf)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pidEvent, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pfAsync, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(poff, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pcbIo, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = RTSemFastMutexRequest(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertRCReturn(rc, rc);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    if (pIoLogger->u32EventTypeNext == VDIOLOG_EVENT_START)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        IoLogEntryStart Entry;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = RTFileReadAt(pIoLogger->hFile, pIoLogger->offReadNext, &Entry, sizeof(Entry), NULL);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            *pfAsync   = (bool)Entry.u8AsyncIo;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            *pidEvent  = RT_LE2H_U64(Entry.u64Id);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            *poff      = RT_LE2H_U64(Entry.Io.u64Off);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            *pcbIo     = RT_LE2H_U64(Entry.Io.u64IoSize);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            if (   pIoLogger->enmReqTypeNext == VDDBGIOLOGREQ_WRITE
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                && (pIoLogger->fFlags & VDDBG_IOLOG_LOG_DATA_WRITTEN))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                /* Read data. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                if (cbBuf < *pcbIo)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                    rc = VERR_BUFFER_OVERFLOW;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                    rc = RTFileReadAt(pIoLogger->hFile, pIoLogger->offReadNext + sizeof(Entry), pvBuf, *pcbIo, NULL);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                if (rc != VERR_BUFFER_OVERFLOW)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                    pIoLogger->offReadNext += *pcbIo + sizeof(Entry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->offReadNext += sizeof(Entry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = VERR_INVALID_STATE;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync    if (RT_SUCCESS(rc))
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync        pIoLogger->u32EventTypeNext = 0;
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTSemFastMutexRelease(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsyncVBOXDDU_DECL(int) VDDbgIoLogEventGetStartDiscard(VDIOLOGGER hIoLogger, uint64_t *pidEvent, bool *pfAsync,
3f8f486a6133cd77aaa32bb47908a351ee14a967vboxsync                                                 PRTRANGE *ppaRanges, unsigned *pcRanges)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync{
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    int rc = VINF_SUCCESS;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertPtrReturn(pidEvent, VERR_INVALID_POINTER);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertPtrReturn(pfAsync, VERR_INVALID_POINTER);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    rc = RTSemFastMutexRequest(pIoLogger->hMtx);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    AssertRCReturn(rc, rc);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    if (   pIoLogger->u32EventTypeNext == VDIOLOG_EVENT_START
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        && pIoLogger->enmReqTypeNext == VDDBGIOLOGREQ_DISCARD)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        IoLogEntryStart Entry;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        rc = RTFileReadAt(pIoLogger->hFile, pIoLogger->offReadNext, &Entry, sizeof(Entry), NULL);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        if (RT_SUCCESS(rc))
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        {
3f8f486a6133cd77aaa32bb47908a351ee14a967vboxsync            PRTRANGE paRanges = NULL;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            IoLogEntryDiscard DiscardRange;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            pIoLogger->offReadNext += sizeof(Entry);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            *pfAsync   = (bool)Entry.u8AsyncIo;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            *pidEvent  = RT_LE2H_U64(Entry.u64Id);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            *pcRanges  = RT_LE2H_U32(Entry.Discard.cRanges);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
3f8f486a6133cd77aaa32bb47908a351ee14a967vboxsync            paRanges = (PRTRANGE)RTMemAllocZ(*pcRanges * sizeof(RTRANGE));
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            if (paRanges)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                for (unsigned i = 0; i < *pcRanges; i++)
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                    rc = RTFileReadAt(pIoLogger->hFile, pIoLogger->offReadNext + i*sizeof(DiscardRange),
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                                      &DiscardRange, sizeof(DiscardRange), NULL);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                    if (RT_FAILURE(rc))
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                        break;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                    paRanges[i].offStart = RT_LE2H_U64(DiscardRange.u64Off);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                    paRanges[i].cbRange  = RT_LE2H_U32(DiscardRange.u32Discard);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                if (RT_SUCCESS(rc))
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                {
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                    pIoLogger->offReadNext += *pcRanges * sizeof(DiscardRange);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                    *ppaRanges = paRanges;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                else
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                    pIoLogger->offReadNext -= sizeof(Entry);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync            else
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync                rc = VERR_NO_MEMORY;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    }
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    else
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync        rc = VERR_INVALID_STATE;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync    if (RT_SUCCESS(rc))
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync        pIoLogger->u32EventTypeNext = 0;
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    RTSemFastMutexRelease(pIoLogger->hMtx);
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    return rc;
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync}
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsyncVBOXDDU_DECL(int) VDDbgIoLogEventGetComplete(VDIOLOGGER hIoLogger, uint64_t *pidEvent, int *pRc,
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                                             uint64_t *pmsDuration, size_t *pcbIo, size_t cbBuf, void *pvBuf)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync{
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    int rc = VINF_SUCCESS;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    PVDIOLOGGERINT pIoLogger = hIoLogger;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pIoLogger, VERR_INVALID_HANDLE);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pidEvent, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pmsDuration, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertPtrReturn(pcbIo, VERR_INVALID_POINTER);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    rc = RTSemFastMutexRequest(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    AssertRCReturn(rc, rc);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
f0c94ab153ce14e9218d36949f474a37a94ede9cvboxsync    if (pIoLogger->u32EventTypeNext == VDIOLOG_EVENT_COMPLETE)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        IoLogEntryComplete Entry;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = RTFileReadAt(pIoLogger->hFile, pIoLogger->offReadNext, &Entry, sizeof(Entry), NULL);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        if (RT_SUCCESS(rc))
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            *pidEvent    = RT_LE2H_U64(Entry.u64Id);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            *pRc         = (int)RT_LE2H_U32((int32_t)Entry.i32Rc);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            *pmsDuration = RT_LE2H_U64(Entry.msDuration);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            *pcbIo       = RT_LE2H_U64(Entry.u64IoBuffer);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            if (*pcbIo)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            {
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                /* Read data. */
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                if (cbBuf < *pcbIo)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                    rc = VERR_BUFFER_OVERFLOW;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                    rc = RTFileReadAt(pIoLogger->hFile, pIoLogger->offReadNext + sizeof(Entry), pvBuf, *pcbIo, NULL);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                if (rc != VERR_BUFFER_OVERFLOW)
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                    pIoLogger->offReadNext += *pcbIo + sizeof(Entry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync            else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync                pIoLogger->offReadNext += sizeof(Entry);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    }
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    else
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync        rc = VERR_INVALID_STATE;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync    if (RT_SUCCESS(rc))
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync        pIoLogger->u32EventTypeNext = 0;
81c87bd7ea74d6f5a3a5aa28d5af33f5a7a989d5vboxsync
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    RTSemFastMutexRelease(pIoLogger->hMtx);
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync    return rc;
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync}
0560d845b0638cde2d51fe9ba84b4847eb9fbb47vboxsync