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diff --git a/tests/auto/corelib/thread/qsemaphore/tst_qsemaphore.cpp b/tests/auto/corelib/thread/qsemaphore/tst_qsemaphore.cpp
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+++ b/tests/auto/corelib/thread/qsemaphore/tst_qsemaphore.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtTest/QtTest>
+
+
+#include <qcoreapplication.h>
+#include <qthread.h>
+#include <qsemaphore.h>
+
+//TESTED_CLASS=
+//TESTED_FILES=
+
+class tst_QSemaphore : public QObject
+{
+ Q_OBJECT
+
+public:
+ tst_QSemaphore();
+ ~tst_QSemaphore();
+
+private slots:
+ void acquire();
+ void tryAcquire();
+ void tryAcquireWithTimeout_data();
+ void tryAcquireWithTimeout();
+ void tryAcquireWithTimeoutStarvation();
+ void release();
+ void available();
+ void producerConsumer();
+};
+
+static QSemaphore *semaphore = 0;
+
+tst_QSemaphore::tst_QSemaphore()
+{ }
+
+tst_QSemaphore::~tst_QSemaphore()
+{ }
+
+class ThreadOne : public QThread
+{
+public:
+ ThreadOne() {}
+
+protected:
+ void run()
+ {
+ int i = 0;
+ while ( i < 100 ) {
+ semaphore->acquire();
+ i++;
+ semaphore->release();
+ }
+ }
+};
+
+class ThreadN : public QThread
+{
+ int N;
+
+public:
+ ThreadN(int n) :N(n) { }
+
+protected:
+ void run()
+ {
+ int i = 0;
+ while ( i < 100 ) {
+ semaphore->acquire(N);
+ i++;
+ semaphore->release(N);
+ }
+ }
+};
+
+void tst_QSemaphore::acquire()
+{
+ {
+ // old incrementOne() test
+ QVERIFY(!semaphore);
+ semaphore = new QSemaphore;
+ // make some "thing" available
+ semaphore->release();
+
+ ThreadOne t1;
+ ThreadOne t2;
+
+ t1.start();
+ t2.start();
+
+ QVERIFY(t1.wait(4000));
+ QVERIFY(t2.wait(4000));
+
+ delete semaphore;
+ semaphore = 0;
+ }
+
+ // old incrementN() test
+ {
+ QVERIFY(!semaphore);
+ semaphore = new QSemaphore;
+ // make 4 "things" available
+ semaphore->release(4);
+
+ ThreadN t1(2);
+ ThreadN t2(3);
+
+ t1.start();
+ t2.start();
+
+ QVERIFY(t1.wait(4000));
+ QVERIFY(t2.wait(4000));
+
+ delete semaphore;
+ semaphore = 0;
+ }
+
+ QSemaphore semaphore;
+
+ QCOMPARE(semaphore.available(), 0);
+ semaphore.release();
+ QCOMPARE(semaphore.available(), 1);
+ semaphore.release();
+ QCOMPARE(semaphore.available(), 2);
+ semaphore.release(10);
+ QCOMPARE(semaphore.available(), 12);
+ semaphore.release(10);
+ QCOMPARE(semaphore.available(), 22);
+
+ semaphore.acquire();
+ QCOMPARE(semaphore.available(), 21);
+ semaphore.acquire();
+ QCOMPARE(semaphore.available(), 20);
+ semaphore.acquire(10);
+ QCOMPARE(semaphore.available(), 10);
+ semaphore.acquire(10);
+ QCOMPARE(semaphore.available(), 0);
+}
+
+void tst_QSemaphore::tryAcquire()
+{
+ QSemaphore semaphore;
+
+ QCOMPARE(semaphore.available(), 0);
+
+ semaphore.release();
+ QCOMPARE(semaphore.available(), 1);
+ QVERIFY(!semaphore.tryAcquire(2));
+ QCOMPARE(semaphore.available(), 1);
+
+ semaphore.release();
+ QCOMPARE(semaphore.available(), 2);
+ QVERIFY(!semaphore.tryAcquire(3));
+ QCOMPARE(semaphore.available(), 2);
+
+ semaphore.release(10);
+ QCOMPARE(semaphore.available(), 12);
+ QVERIFY(!semaphore.tryAcquire(100));
+ QCOMPARE(semaphore.available(), 12);
+
+ semaphore.release(10);
+ QCOMPARE(semaphore.available(), 22);
+ QVERIFY(!semaphore.tryAcquire(100));
+ QCOMPARE(semaphore.available(), 22);
+
+ QVERIFY(semaphore.tryAcquire());
+ QCOMPARE(semaphore.available(), 21);
+
+ QVERIFY(semaphore.tryAcquire());
+ QCOMPARE(semaphore.available(), 20);
+
+ QVERIFY(semaphore.tryAcquire(10));
+ QCOMPARE(semaphore.available(), 10);
+
+ QVERIFY(semaphore.tryAcquire(10));
+ QCOMPARE(semaphore.available(), 0);
+
+ // should not be able to acquire more
+ QVERIFY(!semaphore.tryAcquire());
+ QCOMPARE(semaphore.available(), 0);
+
+ QVERIFY(!semaphore.tryAcquire());
+ QCOMPARE(semaphore.available(), 0);
+
+ QVERIFY(!semaphore.tryAcquire(10));
+ QCOMPARE(semaphore.available(), 0);
+
+ QVERIFY(!semaphore.tryAcquire(10));
+ QCOMPARE(semaphore.available(), 0);
+}
+
+void tst_QSemaphore::tryAcquireWithTimeout_data()
+{
+ QTest::addColumn<int>("timeout");
+
+ QTest::newRow("1s") << 1000;
+ QTest::newRow("10s") << 10000;
+}
+
+void tst_QSemaphore::tryAcquireWithTimeout()
+{
+ QFETCH(int, timeout);
+
+ QSemaphore semaphore;
+ QTime time;
+
+#define QVERIFYGE(a,b) {int e = a; if (a<b) qDebug() << #a << "=" << e << " !>= " << #b << "=" << b; QVERIFY(e>=b);}
+#define QVERIFYLE(a,b) {int e = a; if (b<a) qDebug() << #a << "=" << e << " !<= " << #b << "=" << b; QVERIFY(e<=b);}
+
+ QCOMPARE(semaphore.available(), 0);
+
+ semaphore.release();
+ QCOMPARE(semaphore.available(), 1);
+ time.start();
+ QVERIFY(!semaphore.tryAcquire(2, timeout));
+ QVERIFYGE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 1);
+
+ semaphore.release();
+ QCOMPARE(semaphore.available(), 2);
+ time.start();
+ QVERIFY(!semaphore.tryAcquire(3, timeout));
+ QVERIFYGE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 2);
+
+ semaphore.release(10);
+ QCOMPARE(semaphore.available(), 12);
+ time.start();
+ QVERIFY(!semaphore.tryAcquire(100, timeout));
+ QVERIFYGE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 12);
+
+ semaphore.release(10);
+ QCOMPARE(semaphore.available(), 22);
+ time.start();
+ QVERIFY(!semaphore.tryAcquire(100, timeout));
+ QVERIFYGE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 22);
+
+ time.start();
+ QVERIFY(semaphore.tryAcquire(1, timeout));
+ QVERIFYLE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 21);
+
+ time.start();
+ QVERIFY(semaphore.tryAcquire(1, timeout));
+ QVERIFYLE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 20);
+
+ time.start();
+ QVERIFY(semaphore.tryAcquire(10, timeout));
+ QVERIFYLE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 10);
+
+ time.start();
+ QVERIFY(semaphore.tryAcquire(10, timeout));
+ QVERIFYLE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 0);
+
+ // should not be able to acquire more
+ time.start();
+ QVERIFY(!semaphore.tryAcquire(1, timeout));
+ QVERIFYGE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 0);
+
+ time.start();
+ QVERIFY(!semaphore.tryAcquire(1, timeout));
+ QVERIFYGE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 0);
+
+ time.start();
+ QVERIFY(!semaphore.tryAcquire(10, timeout));
+ QVERIFYGE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 0);
+
+ time.start();
+ QVERIFY(!semaphore.tryAcquire(10, timeout));
+ QVERIFYGE(time.elapsed(), timeout);
+ QCOMPARE(semaphore.available(), 0);
+}
+
+void tst_QSemaphore::tryAcquireWithTimeoutStarvation()
+{
+ class Thread : public QThread
+ {
+ public:
+ QSemaphore startup;
+ QSemaphore *semaphore;
+ int amountToConsume, timeout;
+
+ void run()
+ {
+ startup.release();
+ forever {
+ if (!semaphore->tryAcquire(amountToConsume, timeout))
+ break;
+ semaphore->release(amountToConsume);
+ }
+ }
+ };
+
+ QSemaphore semaphore;
+ semaphore.release(1);
+
+ Thread consumer;
+ consumer.semaphore = &semaphore;
+ consumer.amountToConsume = 1;
+ consumer.timeout = 1000;
+
+ // start the thread and wait for it to start consuming
+ consumer.start();
+ consumer.startup.acquire();
+
+ // try to consume more than the thread we started is, and provide a longer
+ // timeout... we should timeout, not wait indefinitely
+ QVERIFY(!semaphore.tryAcquire(consumer.amountToConsume * 2, consumer.timeout * 2));
+
+ // the consumer should still be running
+ QVERIFY(consumer.isRunning() && !consumer.isFinished());
+
+ // acquire, and wait for smallConsumer to timeout
+ semaphore.acquire();
+ QVERIFY(consumer.wait());
+}
+
+void tst_QSemaphore::release()
+{ DEPENDS_ON("acquire"); }
+
+void tst_QSemaphore::available()
+{ DEPENDS_ON("acquire"); }
+
+const char alphabet[] = "ACGTH";
+const int AlphabetSize = sizeof(alphabet) - 1;
+
+const int BufferSize = 4096; // GCD of BufferSize and alphabet size must be 1
+char buffer[BufferSize];
+
+#ifndef Q_OS_WINCE
+const int ProducerChunkSize = 3;
+const int ConsumerChunkSize = 7;
+const int Multiplier = 10;
+#else
+const int ProducerChunkSize = 2;
+const int ConsumerChunkSize = 5;
+const int Multiplier = 3;
+#endif
+
+// note: the code depends on the fact that DataSize is a multiple of
+// ProducerChunkSize, ConsumerChunkSize, and BufferSize
+const int DataSize = ProducerChunkSize * ConsumerChunkSize * BufferSize * Multiplier;
+
+QSemaphore freeSpace(BufferSize);
+QSemaphore usedSpace;
+
+class Producer : public QThread
+{
+public:
+ void run();
+};
+
+void Producer::run()
+{
+ for (int i = 0; i < DataSize; ++i) {
+ freeSpace.acquire();
+ buffer[i % BufferSize] = alphabet[i % AlphabetSize];
+ usedSpace.release();
+ }
+ for (int i = 0; i < DataSize; ++i) {
+ if ((i % ProducerChunkSize) == 0)
+ freeSpace.acquire(ProducerChunkSize);
+ buffer[i % BufferSize] = alphabet[i % AlphabetSize];
+ if ((i % ProducerChunkSize) == (ProducerChunkSize - 1))
+ usedSpace.release(ProducerChunkSize);
+ }
+}
+
+class Consumer : public QThread
+{
+public:
+ void run();
+};
+
+void Consumer::run()
+{
+ for (int i = 0; i < DataSize; ++i) {
+ usedSpace.acquire();
+ QCOMPARE(buffer[i % BufferSize], alphabet[i % AlphabetSize]);
+ freeSpace.release();
+ }
+ for (int i = 0; i < DataSize; ++i) {
+ if ((i % ConsumerChunkSize) == 0)
+ usedSpace.acquire(ConsumerChunkSize);
+ QCOMPARE(buffer[i % BufferSize], alphabet[i % AlphabetSize]);
+ if ((i % ConsumerChunkSize) == (ConsumerChunkSize - 1))
+ freeSpace.release(ConsumerChunkSize);
+ }
+}
+
+void tst_QSemaphore::producerConsumer()
+{
+ Producer producer;
+ Consumer consumer;
+ producer.start();
+ consumer.start();
+ producer.wait();
+ consumer.wait();
+}
+
+QTEST_MAIN(tst_QSemaphore)
+#include "tst_qsemaphore.moc"
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