C++ (Cpp) qt_ignore_sigpipe Examples

Example #1

File: kptydevice.cpp Project: Swordfish90/qmltermwidget

bool KPtyDevicePrivate::_k_canWrite()
{
    Q_Q(KPtyDevice);

    writeNotifier->setEnabled(false);
    if (writeBuffer.isEmpty())
        return false;

    qt_ignore_sigpipe();
    int wroteBytes;
    NO_INTR(wroteBytes,
            write(q->masterFd(),
                  writeBuffer.readPointer(), writeBuffer.readSize()));
    if (wroteBytes < 0) {
        q->setErrorString(QLatin1String("Error writing to PTY"));
        return false;
    }
    writeBuffer.free(wroteBytes);

    if (!emittedBytesWritten) {
        emittedBytesWritten = true;
        emit q->bytesWritten(wroteBytes);
        emittedBytesWritten = false;
    }

    if (!writeBuffer.isEmpty())
        writeNotifier->setEnabled(true);
    return true;
}

Example #2

File: qnativesocketengine_unix.cpp Project: 13W/phantomjs

qint64 QNativeSocketEnginePrivate::nativeSendDatagram(const char *data, qint64 len,
                                                   const QHostAddress &host, quint16 port)
{
    struct sockaddr_in sockAddrIPv4;
    struct sockaddr *sockAddrPtr = 0;
    QT_SOCKLEN_T sockAddrSize = 0;

#if !defined(QT_NO_IPV6)
    struct sockaddr_in6 sockAddrIPv6;
    if (host.protocol() == QAbstractSocket::IPv6Protocol) {
        memset(&sockAddrIPv6, 0, sizeof(sockAddrIPv6));
        sockAddrIPv6.sin6_family = AF_INET6;
        sockAddrIPv6.sin6_port = htons(port);

        Q_IPV6ADDR tmp = host.toIPv6Address();
        memcpy(&sockAddrIPv6.sin6_addr.s6_addr, &tmp, sizeof(tmp));
        QString scopeid = host.scopeId();
        bool ok;
        sockAddrIPv6.sin6_scope_id = scopeid.toInt(&ok);
#ifndef QT_NO_IPV6IFNAME
        if (!ok)
            sockAddrIPv6.sin6_scope_id = ::if_nametoindex(scopeid.toLatin1());
#endif
        sockAddrSize = sizeof(sockAddrIPv6);
        sockAddrPtr = (struct sockaddr *)&sockAddrIPv6;
    } else
#endif
    if (host.protocol() == QAbstractSocket::IPv4Protocol) {
        memset(&sockAddrIPv4, 0, sizeof(sockAddrIPv4));
        sockAddrIPv4.sin_family = AF_INET;
        sockAddrIPv4.sin_port = htons(port);
        sockAddrIPv4.sin_addr.s_addr = htonl(host.toIPv4Address());
        sockAddrSize = sizeof(sockAddrIPv4);
        sockAddrPtr = (struct sockaddr *)&sockAddrIPv4;
    }

    // ignore the SIGPIPE signal
    qt_ignore_sigpipe();
    ssize_t sentBytes = qt_safe_sendto(socketDescriptor, data, len,
                                       0, sockAddrPtr, sockAddrSize);

    if (sentBytes < 0) {
        switch (errno) {
        case EMSGSIZE:
            setError(QAbstractSocket::DatagramTooLargeError, DatagramTooLargeErrorString);
            break;
        default:
            setError(QAbstractSocket::NetworkError, SendDatagramErrorString);
        }
    }

#if defined (QNATIVESOCKETENGINE_DEBUG)
    qDebug("QNativeSocketEngine::sendDatagram(%p \"%s\", %lli, \"%s\", %i) == %lli", data,
           qt_prettyDebug(data, qMin<int>(len, 16), len).data(), len, host.toString().toLatin1().constData(),
           port, (qint64) sentBytes);
#endif

    return qint64(sentBytes);
}

Example #3

File: qnativesocketengine_unix.cpp Project: Mr-Kumar-Abhishek/qt

qint64 QNativeSocketEnginePrivate::nativeWrite(const char *data, qint64 len)
{
    Q_Q(QNativeSocketEngine);

    // ignore the SIGPIPE signal
    qt_ignore_sigpipe();

    // loop while ::write() returns -1 and errno == EINTR, in case
    // of an interrupting signal.
    ssize_t writtenBytes;
    do {
#ifdef Q_OS_SYMBIAN
	    writtenBytes = ::write(socketDescriptor, data, len);
#else
        writtenBytes = qt_safe_write(socketDescriptor, data, len);
#endif
        // writtenBytes = QT_WRITE(socketDescriptor, data, len); ### TODO S60: Should this line be removed or the one above it?
    } while (writtenBytes < 0 && errno == EINTR);

    if (writtenBytes < 0) {
        switch (errno) {
        case EPIPE:
        case ECONNRESET:
            writtenBytes = -1;
            setError(QAbstractSocket::RemoteHostClosedError, RemoteHostClosedErrorString);
            q->close();
            break;
        case EAGAIN:
            writtenBytes = 0;
            break;
        case EMSGSIZE:
            setError(QAbstractSocket::DatagramTooLargeError, DatagramTooLargeErrorString);
            break;
        default:
            break;
        }
    }

#if defined (QNATIVESOCKETENGINE_DEBUG)
    qDebug("QNativeSocketEnginePrivate::nativeWrite(%p \"%s\", %llu) == %i",
           data, qt_prettyDebug(data, qMin((int) len, 16),
                                (int) len).data(), len, (int) writtenBytes);
#endif

    return qint64(writtenBytes);
}

Example #4

qint64 QNativeSocketEnginePrivate::nativeWrite(const char *data, qint64 len)
{
    Q_Q(QNativeSocketEngine);

    // ignore the SIGPIPE signal
    qt_ignore_sigpipe();

    ssize_t writtenBytes;
#ifdef Q_OS_SYMBIAN
    // Symbian does not support signals natively and Open C returns EINTR when moving to offline
    writtenBytes = ::write(socketDescriptor, data, len);
#else
    writtenBytes = qt_safe_write(socketDescriptor, data, len);
#endif

    if (writtenBytes < 0) {
        switch (errno) {
        case EPIPE:
        case ECONNRESET:
            writtenBytes = -1;
            setError(QAbstractSocket::RemoteHostClosedError, RemoteHostClosedErrorString);
            q->close();
            break;
        case EAGAIN:
            writtenBytes = 0;
            break;
        case EMSGSIZE:
            setError(QAbstractSocket::DatagramTooLargeError, DatagramTooLargeErrorString);
            break;
        default:
            break;
        }
    }

#if defined (QNATIVESOCKETENGINE_DEBUG)
    qDebug("QNativeSocketEnginePrivate::nativeWrite(%p \"%s\", %llu) == %i",
           data, qt_prettyDebug(data, qMin((int) len, 16),
                                (int) len).data(), len, (int) writtenBytes);
#endif

    return qint64(writtenBytes);
}