Doc: Clean up threading examples

- Example 3 (Clock) is a collection of anti-patterns.
    - It implements a slot in a QThread subclass and then forces the new
      thread to use Qt::DirectConnection to invoke the slot in the
      "wrong" thread.
    - It talks about getting away with non-thread-safe usage
    - It uses a thread as a timer and then admits that it's an over-
      complicated approach.
- Example 4 (Permanent Thread) is over-complicated yet incomplete. A
  better one exists in the QThread class ref.
- Example 1 (Thread Pool) is covered by the QThreadPool class ref.
- Example 2 (QtConcurrent::run()) is covered in the "Threading and
  Concurrent Programming Examples" page and the "QtConcurrentRun" page.
- The undocumented "Hello Thread" example is covered in the QThread
  class ref.
- These examples cannot be accessed from Qt Creator's Examples tool.
- These examples are neither widget-related nor tutorials, contrary to
  their source paths.

Task-number: QTBUG-33360
Change-Id: Ic79cb764ee925ddbcbeafee8e1d01db7fe0f6cfe
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>

1 files changed, 0 insertions, 100 deletions

diff --git a/examples/widgets/tutorials/threads/movedobject/thread.cpp b/examples/widgets/tutorials/threads/movedobject/thread.cpp
deleted file mode 100644
index 2b6c2ffbd6..0000000000
--- a/examples/widgets/tutorials/threads/movedobject/thread.cpp
+++ /dev/null
@@ -1,100 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/legal
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** You may use this file under the terms of the BSD license as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-**   * Redistributions of source code must retain the above copyright
-**     notice, this list of conditions and the following disclaimer.
-**   * Redistributions in binary form must reproduce the above copyright
-**     notice, this list of conditions and the following disclaimer in
-**     the documentation and/or other materials provided with the
-**     distribution.
-**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
-**     of its contributors may be used to endorse or promote products derived
-**     from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "thread.h"
-
-/*
- * QThread derived class with additional capability to move a QObject to the
- * new thread, to stop the thread and move the QObject back to the thread where
- *it came from.
- */
-
-Thread::Thread( QObject *parent)
-    : QThread (parent)
-{
-    //we need a class that receives signals from other threads and emits a signal in response
-    shutDownHelper=new QSignalMapper;
-    shutDownHelper->setMapping(this,0);
-    connect(this, SIGNAL(started()), this, SLOT(setReadyStatus() ), Qt::DirectConnection);
-    connect(this, SIGNAL(aboutToStop()), shutDownHelper, SLOT(map()) );
-}
-
-//------------------------------------------------------
-Thread::~Thread()
-{
-    delete shutDownHelper;
-}
-
-//------------------------------------------------------
-// starts thread, moves worker to this thread and blocks
-void Thread::launchWorker(QObject *worker)
-{
-    this->worker = worker;
-    start();
-    worker->moveToThread(this);
-    shutDownHelper->moveToThread(this);
-    connect(shutDownHelper, SIGNAL(mapped(int) ), this, SLOT(stopExecutor()), Qt::DirectConnection );
-    mutex.lock();
-    waitCondition.wait(&mutex);
-}
-
-//------------------------------------------------------
-// puts a command to stop processing in the event queue of worker thread
-void Thread::stop()
-{
-    emit aboutToStop();
-}
-
-//------------------------------------------------------
-
-// methods above this line should be called in  gui thread context
-// methods below this line are private and will be run in  secondary thread context
-
-//------------------------------------------------------
-void Thread::stopExecutor()  //secondary thread context
-{
-    exit();
-}
-
-//------------------------------------------------------
-void Thread::setReadyStatus()
-{
-    waitCondition.wakeAll();
-}