diff options
Diffstat (limited to 'src/plugins/qmltooling/qmldbg_ost/qostdevice.cpp')
| -rw-r--r-- | src/plugins/qmltooling/qmldbg_ost/qostdevice.cpp | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/src/plugins/qmltooling/qmldbg_ost/qostdevice.cpp b/src/plugins/qmltooling/qmldbg_ost/qostdevice.cpp new file mode 100644 index 00000000..31030585 --- /dev/null +++ b/src/plugins/qmltooling/qmldbg_ost/qostdevice.cpp @@ -0,0 +1,220 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qostdevice.h" +#include <e32base.h> + +#include "usbostcomm.h" + +class QOstDevicePrivate : public CActive +{ + QOstDevice* q_ptr; + Q_DECLARE_PUBLIC(QOstDevice) + +public: + QOstDevicePrivate() : CActive(CActive::EPriorityStandard) { + CActiveScheduler::Add(this); + } + ~QOstDevicePrivate() { + Cancel(); + } + + TInt& AoFlags() { return ((TInt*)&iStatus)[1]; } + +private: + void RunL(); + void DoCancel(); + +private: + RUsbOstComm ost; + TBuf8<4096> readBuf; + QByteArray dataBuf; + TBool inReadyRead; +}; + +QOstDevice::QOstDevice(QObject *parent) : + QIODevice(parent), d_ptr(new QOstDevicePrivate) +{ + d_ptr->q_ptr = this; +} + +QOstDevice::~QOstDevice() +{ + close(); + delete d_ptr; +} + +bool QOstDevice::open(int ostProtocolId) +{ + if (isOpen()) + return false; + + Q_D(QOstDevice); + TInt err = d->ost.Connect(); + if (!err) err = d->ost.Open(); + const TVersion KRequiredVersion(1,1,0); + TVersion version = d->ost.Version(); + if (version.iMajor < KRequiredVersion.iMajor || + (version.iMajor == KRequiredVersion.iMajor && version.iMinor < KRequiredVersion.iMinor)) { + setErrorString("CODA version too old. At least version 4.0.18 (without TRK) is required."); + return false; + } + + if (!err) err = d->ost.RegisterProtocolID((TOstProtIds)ostProtocolId, EFalse); + if (!err) { + d->ost.ReadMessage(d->iStatus, d->readBuf); + d->SetActive(); + return QIODevice::open(ReadWrite | Unbuffered); + } + return false; +} + +void QOstDevicePrivate::RunL() +{ + Q_Q(QOstDevice); + //qDebug("QOstDevice received %d bytes q=%x", readBuf.Size(), q); + if (iStatus == KErrNone) { + QByteArray data = QByteArray::fromRawData((const char*)readBuf.Ptr(), readBuf.Size()); + dataBuf.append(data); + + readBuf.Zero(); + ost.ReadMessage(iStatus, readBuf); + SetActive(); + + if (!inReadyRead) { + inReadyRead = true; + emit q->readyRead(); + inReadyRead = false; + } + } else { + q->setErrorString(QString("Error %1 from RUsbOstComm::ReadMessage()").arg(iStatus.Int())); + } + //qDebug("-QOstDevicePrivate RunL"); +} + +void QOstDevicePrivate::DoCancel() +{ + ost.ReadCancel(); +} + +void QOstDevice::close() +{ + Q_D(QOstDevice); + QIODevice::close(); + d->Cancel(); + // RDbgTrcComm::Close isn't safe to call when not open, sigh + if (d->ost.Handle()) { + d->ost.Close(); + } +} + +qint64 QOstDevice::readData(char *data, qint64 maxSize) +{ + Q_D(QOstDevice); + if (d->dataBuf.length() == 0 && !d->IsActive()) + return -1; + qint64 available = qMin(maxSize, (qint64)d->dataBuf.length()); + memcpy(data, d->dataBuf.constData(), available); + d->dataBuf.remove(0, available); + return available; +} + +static const TInt KMaxOstPacketLen = 4096; + +qint64 QOstDevice::writeData(const char *data, qint64 maxSize) +{ + Q_D(QOstDevice); + TPtrC8 ptr((const TUint8*)data, (TInt)maxSize); + while (ptr.Length()) { + TPtrC8 fragment = ptr.Left(qMin(ptr.Length(), KMaxOstPacketLen)); + //qDebug("QOstDevice writing %d bytes", fragment.Length()); + TRequestStatus stat; + d->ost.WriteMessage(stat, fragment); + User::WaitForRequest(stat); + if (stat.Int() != KErrNone) { + setErrorString(QString("Error %1 from RUsbOstComm::WriteMessage()").arg(stat.Int())); + return -1; + } + ptr.Set(ptr.Mid(fragment.Length())); + } + emit bytesWritten(maxSize); //TODO does it matter this is emitted synchronously? + //qDebug("QOstDevice wrote %d bytes", ptr.Size()); + return maxSize; +} + +qint64 QOstDevice::bytesAvailable() const +{ + Q_D(const QOstDevice); + return d->dataBuf.length(); +} + +bool QOstDevice::waitForReadyRead(int msecs) +{ + Q_D(QOstDevice); + if (msecs >= 0) { + RTimer timer; + TInt err = timer.CreateLocal(); + if (err) return false; + TRequestStatus timeoutStat; + timer.After(timeoutStat, msecs*1000); + User::WaitForRequest(timeoutStat, d->iStatus); + if (timeoutStat != KRequestPending) { + // Timed out + timer.Close(); + return false; + } else { + // We got data, so cancel timer + timer.Cancel(); + User::WaitForRequest(timeoutStat); + timer.Close(); + // And drop through + } + } else { + // Just wait forever for data + User::WaitForRequest(d->iStatus); + } + + // If we get here we have data + TInt err = d->iStatus.Int(); + d->AoFlags() &= ~3; // This is necessary to clean up the scheduler as you're not supposed to bypass it like this + TRAP_IGNORE(d->RunL()); + return err == KErrNone; +} |