diff options
author | Topi Reinio <topi.reinio@digia.com> | 2014-10-15 13:50:27 +0200 |
---|---|---|
committer | Topi Reiniƶ <topi.reinio@digia.com> | 2014-10-17 14:57:13 +0200 |
commit | cf8f369f8575dcb9ca4d5116f3afc7cff4a080af (patch) | |
tree | a685f393b50786a892fcd3ad638b4c01e9002894 /examples/corelib/threads/waitconditions | |
parent | 45485d9eb47d3129b8a74c2e9d854c07673161cd (diff) |
Move Qt Core examples under a common subdirectory
Qt Core examples were scattered into several subdirectories under
qtbase/examples. This caused an issue with the example manifest
file generated by QDoc; it expects to find all examples under a
common directory in order to produde correct paths to the example
.pro files. Qt Creator will not find the examples without a valid
manifest file.
This change moves the examples and edits the documentation files
accordingly.
Task-number: QTBUG-41963
Change-Id: I51d86782e0ba21c5c9bae5f15401ec774abe5cf8
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Diffstat (limited to 'examples/corelib/threads/waitconditions')
-rw-r--r-- | examples/corelib/threads/waitconditions/waitconditions.cpp | 137 | ||||
-rw-r--r-- | examples/corelib/threads/waitconditions/waitconditions.pro | 9 |
2 files changed, 146 insertions, 0 deletions
diff --git a/examples/corelib/threads/waitconditions/waitconditions.cpp b/examples/corelib/threads/waitconditions/waitconditions.cpp new file mode 100644 index 0000000000..b0336f4c2b --- /dev/null +++ b/examples/corelib/threads/waitconditions/waitconditions.cpp @@ -0,0 +1,137 @@ +/**************************************************************************** +** +** 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 <QtCore> + +#include <stdio.h> +#include <stdlib.h> + +//! [0] +const int DataSize = 100000; + +const int BufferSize = 8192; +char buffer[BufferSize]; + +QWaitCondition bufferNotEmpty; +QWaitCondition bufferNotFull; +QMutex mutex; +int numUsedBytes = 0; +//! [0] + +//! [1] +class Producer : public QThread +//! [1] //! [2] +{ +public: + Producer(QObject *parent = NULL) : QThread(parent) + { + } + + void run() Q_DECL_OVERRIDE + { + qsrand(QTime(0,0,0).secsTo(QTime::currentTime())); + + for (int i = 0; i < DataSize; ++i) { + mutex.lock(); + if (numUsedBytes == BufferSize) + bufferNotFull.wait(&mutex); + mutex.unlock(); + + buffer[i % BufferSize] = "ACGT"[(int)qrand() % 4]; + + mutex.lock(); + ++numUsedBytes; + bufferNotEmpty.wakeAll(); + mutex.unlock(); + } + } +}; +//! [2] + +//! [3] +class Consumer : public QThread +//! [3] //! [4] +{ + Q_OBJECT +public: + Consumer(QObject *parent = NULL) : QThread(parent) + { + } + + void run() Q_DECL_OVERRIDE + { + for (int i = 0; i < DataSize; ++i) { + mutex.lock(); + if (numUsedBytes == 0) + bufferNotEmpty.wait(&mutex); + mutex.unlock(); + + fprintf(stderr, "%c", buffer[i % BufferSize]); + + mutex.lock(); + --numUsedBytes; + bufferNotFull.wakeAll(); + mutex.unlock(); + } + fprintf(stderr, "\n"); + } + +signals: + void stringConsumed(const QString &text); +}; +//! [4] + + +//! [5] +int main(int argc, char *argv[]) +//! [5] //! [6] +{ + QCoreApplication app(argc, argv); + Producer producer; + Consumer consumer; + producer.start(); + consumer.start(); + producer.wait(); + consumer.wait(); + return 0; +} +//! [6] + +#include "waitconditions.moc" diff --git a/examples/corelib/threads/waitconditions/waitconditions.pro b/examples/corelib/threads/waitconditions/waitconditions.pro new file mode 100644 index 0000000000..2dbe7df68a --- /dev/null +++ b/examples/corelib/threads/waitconditions/waitconditions.pro @@ -0,0 +1,9 @@ +QT = core +CONFIG -= moc app_bundle +CONFIG += console + +SOURCES += waitconditions.cpp + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/corelib/threads/waitconditions +INSTALLS += target |