diff options
Diffstat (limited to 'src/corelib/io/qwindowspipewriter_p.h')
| -rw-r--r-- | src/corelib/io/qwindowspipewriter_p.h | 153 |
1 files changed, 39 insertions, 114 deletions
diff --git a/src/corelib/io/qwindowspipewriter_p.h b/src/corelib/io/qwindowspipewriter_p.h index 6c269e86b7..c8c82310b8 100644 --- a/src/corelib/io/qwindowspipewriter_p.h +++ b/src/corelib/io/qwindowspipewriter_p.h @@ -1,41 +1,6 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtCore module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// Copyright (C) 2021 Alex Trotsenko <alex1973tr@gmail.com> +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #ifndef QWINDOWSPIPEWRITER_P_H #define QWINDOWSPIPEWRITER_P_H @@ -51,106 +16,66 @@ // We mean it. // -#include <QtCore/private/qglobal_p.h> -#include <qelapsedtimer.h> #include <qobject.h> -#include <qbytearray.h> +#include <qmutex.h> +#include <private/qringbuffer_p.h> + #include <qt_windows.h> QT_BEGIN_NAMESPACE -#define SLEEPMIN 10 -#define SLEEPMAX 500 - -class QIncrementalSleepTimer -{ - -public: - QIncrementalSleepTimer(int msecs) - : totalTimeOut(msecs) - , nextSleep(qMin(SLEEPMIN, totalTimeOut)) - { - if (totalTimeOut == -1) - nextSleep = SLEEPMIN; - timer.start(); - } - - int nextSleepTime() - { - int tmp = nextSleep; - nextSleep = qMin(nextSleep * 2, qMin(SLEEPMAX, timeLeft())); - return tmp; - } - - int timeLeft() const - { - if (totalTimeOut == -1) - return SLEEPMAX; - return qMax(int(totalTimeOut - timer.elapsed()), 0); - } - - bool hasTimedOut() const - { - if (totalTimeOut == -1) - return false; - return timer.elapsed() >= totalTimeOut; - } - - void resetIncrements() - { - nextSleep = qMin(SLEEPMIN, timeLeft()); - } - -private: - QElapsedTimer timer; - int totalTimeOut; - int nextSleep; -}; - class Q_CORE_EXPORT QWindowsPipeWriter : public QObject { Q_OBJECT public: - explicit QWindowsPipeWriter(HANDLE pipeWriteEnd, QObject *parent = 0); + explicit QWindowsPipeWriter(HANDLE pipeWriteEnd, QObject *parent = nullptr); ~QWindowsPipeWriter(); - bool write(const QByteArray &ba); + void setHandle(HANDLE hPipeWriteEnd); + void write(const QByteArray &ba); + void write(const char *data, qint64 size); void stop(); - bool waitForWrite(int msecs); - bool isWriteOperationActive() const { return writeSequenceStarted; } + bool checkForWrite() { return consumePendingAndEmit(false); } qint64 bytesToWrite() const; + bool isWriteOperationActive() const; + HANDLE syncEvent() const { return syncHandle; } Q_SIGNALS: - void canWrite(); void bytesWritten(qint64 bytes); - void _q_queueBytesWritten(QPrivateSignal); + void writeFailed(); + +protected: + bool event(QEvent *e) override; private: - static void CALLBACK writeFileCompleted(DWORD errorCode, DWORD numberOfBytesTransfered, - OVERLAPPED *overlappedBase); - void notified(DWORD errorCode, DWORD numberOfBytesWritten); - bool waitForNotification(int timeout); - void emitPendingBytesWrittenValue(); - - class Overlapped : public OVERLAPPED - { - Q_DISABLE_COPY_MOVE(Overlapped) - public: - explicit Overlapped(QWindowsPipeWriter *pipeWriter); - void clear(); - - QWindowsPipeWriter *pipeWriter; - }; + enum CompletionState { NoError, ErrorDetected, WriteDisabled }; + + template <typename... Args> + inline void writeImpl(Args... args); + + void startAsyncWriteHelper(QMutexLocker<QMutex> *locker); + void startAsyncWriteLocked(); + static void CALLBACK waitCallback(PTP_CALLBACK_INSTANCE instance, PVOID context, + PTP_WAIT wait, TP_WAIT_RESULT waitResult); + bool writeCompleted(DWORD errorCode, DWORD numberOfBytesWritten); + void notifyCompleted(QMutexLocker<QMutex> *locker); + bool consumePendingAndEmit(bool allowWinActPosting); HANDLE handle; - Overlapped *overlapped; - QByteArray buffer; + HANDLE eventHandle; + HANDLE syncHandle; + PTP_WAIT waitObject; + OVERLAPPED overlapped; + QRingBuffer writeBuffer; qint64 pendingBytesWrittenValue; + mutable QMutex mutex; + DWORD lastError; + + CompletionState completionState; bool stopped; bool writeSequenceStarted; - bool notifiedCalled; bool bytesWrittenPending; - bool inBytesWritten; + bool winEventActPosted; }; QT_END_NAMESPACE |