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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "signalbug.h"
#include <qcoreapplication.h>
#include <qstring.h>
#include <stdio.h>
static int Step = 0;
Sender RandomSender (0, 0);
void TRACE (int step, const char *name)
{
for (int t = 0; t < step - 1; t++)
fprintf (stderr, "\t");
fprintf (stderr, "Step %d: %s\n", step, name);
return;
}
Receiver::Receiver ()
: QObject ()
{
}
void Receiver::received ()
{
::Step++;
const int stepCopy = ::Step;
TRACE (stepCopy, "Receiver::received()");
if (::Step != 2 && ::Step != 4)
qFatal("%s: Incorrect Step: %d (should be 2 or 4)", Q_FUNC_INFO, ::Step);
if (::Step == 2)
s->fire ();
fprintf (stderr, "Receiver<%s>::received() sender=%s\n",
(const char *) objectName ().toLatin1 (), sender ()->metaObject()->className());
TRACE (stepCopy, "ends Receiver::received()");
}
Disconnector::Disconnector ()
: QObject ()
{
}
void Disconnector::received ()
{
::Step++;
const int stepCopy = ::Step;
TRACE (stepCopy, "Disconnector::received()");
if (::Step != 5 && ::Step != 6)
qFatal("%s: Incorrect Step: %d (should be 5 or 6)", Q_FUNC_INFO, ::Step);
fprintf (stderr, "Disconnector<%s>::received() sender=%s\n",
(const char *) objectName ().toLatin1 (), sender ()->metaObject()->className());
if (sender () == 0)
fprintf (stderr, "WE SHOULD NOT BE RECEIVING THIS SIGNAL\n");
if (::Step == 5)
{
disconnect (s, SIGNAL(fired()), s->d, SLOT(received()));
connect (&RandomSender, SIGNAL(fired()), s->d, SLOT(received()));
}
TRACE (stepCopy, "ends Disconnector::received()");
}
Sender::Sender (Receiver *r, Disconnector *d)
: QObject ()
{
this->r = r; this->d = d;
if (r)
connect (this, SIGNAL(fired()), r, SLOT(received()));
if (d)
connect (this, SIGNAL(fired()), d, SLOT(received()));
};
void Sender::fire ()
{
::Step++;
const int stepCopy = ::Step;
TRACE (stepCopy, "Sender::fire()");
if (::Step != 1 && ::Step != 3)
qFatal("%s: Incorrect Step: %d (should be 1 or 3)", Q_FUNC_INFO, ::Step);
emit fired ();
TRACE (stepCopy, "ends Sender::fire()");
}
int main (int argc, char *argv [])
{
QCoreApplication app (argc, argv);
Receiver r;
Disconnector d;
Sender s (&r, &d);
r.s = &s;
d.s = &s;
::Step = 0;
s.fire ();
return 0;
}
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