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     7 ** This file is part of the test suite of the Qt Toolkit.

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    41 

    42 

    43 #include <qcoreapplication.h>

    44 #include <qcoreevent.h>

    45 #include <qthread.h>

    46 

    47 class QTestAliveEvent: public QEvent

    48 {

    49 public:

    50 

    51     enum { AliveEventType = QEvent::User + 422 };

    52 

    53     inline QTestAliveEvent(int aSequenceId)

    54         : QEvent(QEvent::Type(AliveEventType)), seqId(aSequenceId)

    55     {}

    56     inline int sequenceId() const { return seqId; }

    57 

    58 private:

    59     int seqId;

    60 };

    61 

    62 class QTestAlivePinger: public QObject

    63 {

    64 public:

    65     QTestAlivePinger(QObject *receiver, QObject *parent = 0);

    66     bool event(QEvent *e);

    67 

    68 protected:

    69     void timerEvent(QTimerEvent *event);

    70 

    71 private:

    72     QObject *rec;

    73     int timerId;

    74     int currentSequenceId;

    75     int lastSequenceId;

    76 };

    77 

    78 QTestAlivePinger::QTestAlivePinger(QObject *receiver, QObject *parent)

    79     : QObject(parent), rec(receiver), currentSequenceId(0), lastSequenceId(0)

    80 {

    81     Q_ASSERT(rec);

    82     timerId = startTimer(850);

    83 }

    84 

    85 bool QTestAlivePinger::event(QEvent *event)

    86 {

    87     // pong received

    88     if (int(event->type()) == QTestAliveEvent::AliveEventType) {

    89         QTestAliveEvent *e = static_cast<QTestAliveEvent *>(event);

    90         //qDebug("PONG %d received", e->sequenceId());

    91         // if the events are not delivered in order, we don't care.

    92         if (e->sequenceId() > lastSequenceId)

    93             lastSequenceId = e->sequenceId();

    94         return true;

    95     }

    96     return QObject::event(event);

    97 }

    98 

    99 void QTestAlivePinger::timerEvent(QTimerEvent *event)

   100 {

   101     if (event->timerId() != timerId)

   102         return;

   103 

   104     if (lastSequenceId < currentSequenceId - 2) {

   105         qWarning("TEST LAGS %d PINGS behind!", currentSequenceId - lastSequenceId);

   106     }

   107     ++currentSequenceId;

   108     //qDebug("PING %d", currentSequenceId);

   109     QCoreApplication::postEvent(rec, new QTestAliveEvent(currentSequenceId));

   110 }

   111 

   112 class QTestAlive: public QThread

   113 {

   114 public:

   115     QTestAlive(QObject *parent = 0);

   116     ~QTestAlive();

   117     void run();

   118 

   119     bool event(QEvent *e);

   120 

   121 private:

   122     QTestAlivePinger *pinger;

   123 };

   124 

   125 QTestAlive::QTestAlive(QObject *parent)

   126     : QThread(parent), pinger(0)

   127 {

   128 }

   129 

   130 QTestAlive::~QTestAlive()

   131 {

   132     quit();

   133     while (isRunning());

   134 }

   135 

   136 bool QTestAlive::event(QEvent *e)

   137 {

   138     if (int(e->type()) == QTestAliveEvent::AliveEventType && pinger) {

   139         // ping received, send back the pong

   140         //qDebug("PONG %d", static_cast<QTestAliveEvent *>(e)->sequenceId());

   141         QCoreApplication::postEvent(pinger,

   142                 new QTestAliveEvent(static_cast<QTestAliveEvent *>(e)->sequenceId()));

   143         return true;

   144     }

   145     return QThread::event(e);

   146 }

   147 

   148 void QTestAlive::run()

   149 {

   150     Q_ASSERT_X(QCoreApplication::instance(), "QTestAlive::run()",

   151                "Cannot start QTestAlive without a QCoreApplication instance.");

   152 

   153     QTestAlivePinger p(this);

   154     pinger = &p;

   155     exec();

   156     pinger = 0;

   157 }

   158 

   159