source: trunk/src/corelib/io/qwindowspipewriter.cpp@ 477

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#include "qwindowspipewriter_p.h"

QT_BEGIN_NAMESPACE

#ifndef QT_NO_THREAD

QWindowsPipeWriter::QWindowsPipeWriter(HANDLE pipe, QObject * parent)
    : QThread(parent),
      writePipe(INVALID_HANDLE_VALUE),
      quitNow(false),
      hasWritten(false)
{
#if !defined(Q_OS_WINCE) || (_WIN32_WCE >= 0x600)
    DuplicateHandle(GetCurrentProcess(), pipe, GetCurrentProcess(),
                         &writePipe, 0, FALSE, DUPLICATE_SAME_ACCESS);
#else
    Q_UNUSED(pipe);
    writePipe = GetCurrentProcess();
#endif
}

QWindowsPipeWriter::~QWindowsPipeWriter()
{
    lock.lock();
    quitNow = true;
    waitCondition.wakeOne();
    lock.unlock();
    if (!wait(100))
        terminate();
#if !defined(Q_OS_WINCE) || (_WIN32_WCE >= 0x600)
    CloseHandle(writePipe);
#endif
}

bool QWindowsPipeWriter::waitForWrite(int msecs)
{
    QMutexLocker locker(&lock);
    bool hadWritten = hasWritten;
    hasWritten = false;
    if (hadWritten)
        return true;
    if (!waitCondition.wait(&lock, msecs))
        return false;
    hadWritten = hasWritten;
    hasWritten = false;
    return hadWritten;
}