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-rw-r--r--tests/auto/corelib/thread/qmutex/.gitignore1
-rw-r--r--tests/auto/corelib/thread/qmutex/qmutex.pro5
-rw-r--r--tests/auto/corelib/thread/qmutex/tst_qmutex.cpp640
3 files changed, 646 insertions, 0 deletions
diff --git a/tests/auto/corelib/thread/qmutex/.gitignore b/tests/auto/corelib/thread/qmutex/.gitignore
new file mode 100644
index 0000000000..2f6b74166f
--- /dev/null
+++ b/tests/auto/corelib/thread/qmutex/.gitignore
@@ -0,0 +1 @@
+tst_qmutex
diff --git a/tests/auto/corelib/thread/qmutex/qmutex.pro b/tests/auto/corelib/thread/qmutex/qmutex.pro
new file mode 100644
index 0000000000..608b08e16e
--- /dev/null
+++ b/tests/auto/corelib/thread/qmutex/qmutex.pro
@@ -0,0 +1,5 @@
+load(qttest_p4)
+SOURCES += tst_qmutex.cpp
+QT = core
+CONFIG += parallel_test
+CONFIG += insignificant_test
diff --git a/tests/auto/corelib/thread/qmutex/tst_qmutex.cpp b/tests/auto/corelib/thread/qmutex/tst_qmutex.cpp
new file mode 100644
index 0000000000..7ad6a98a4d
--- /dev/null
+++ b/tests/auto/corelib/thread/qmutex/tst_qmutex.cpp
@@ -0,0 +1,640 @@
+/****************************************************************************
+**
+** 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 <qatomic.h>
+#include <qcoreapplication.h>
+#include <qdatetime.h>
+#include <qmutex.h>
+#include <qthread.h>
+#include <qwaitcondition.h>
+
+//TESTED_CLASS=
+//TESTED_FILES=
+
+class tst_QMutex : public QObject
+{
+ Q_OBJECT
+
+public:
+ tst_QMutex();
+ virtual ~tst_QMutex();
+
+private slots:
+ void tryLock();
+ void lock_unlock_locked_tryLock();
+ void stressTest();
+ void tryLockRace();
+ void qtbug16115_trylock();
+ void moreStress();
+};
+
+static const int iterations = 100;
+
+tst_QMutex::tst_QMutex()
+
+{
+}
+
+tst_QMutex::~tst_QMutex()
+{
+}
+
+QAtomicInt lockCount(0);
+QMutex normalMutex, recursiveMutex(QMutex::Recursive);
+QSemaphore testsTurn;
+QSemaphore threadsTurn;
+
+enum { waitTime = 100 };
+
+void tst_QMutex::tryLock()
+{
+ // test non-recursive mutex
+ {
+ class Thread : public QThread
+ {
+ public:
+ void run()
+ {
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ QVERIFY(!normalMutex.tryLock());
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ QVERIFY(normalMutex.tryLock());
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ QVERIFY(!normalMutex.tryLock());
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ normalMutex.unlock();
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ QTime timer;
+ timer.start();
+ QVERIFY(!normalMutex.tryLock(waitTime));
+ QVERIFY(timer.elapsed() >= waitTime);
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ timer.start();
+ QVERIFY(normalMutex.tryLock(waitTime));
+ QVERIFY(timer.elapsed() <= waitTime);
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ timer.start();
+ QVERIFY(!normalMutex.tryLock(waitTime));
+ QVERIFY(timer.elapsed() >= waitTime);
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ normalMutex.unlock();
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ QVERIFY(!normalMutex.tryLock(0));
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ timer.start();
+ QVERIFY(normalMutex.tryLock(0));
+ QVERIFY(timer.elapsed() < waitTime);
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ QVERIFY(!normalMutex.tryLock(0));
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ normalMutex.unlock();
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ }
+ };
+
+ Thread thread;
+ thread.start();
+
+ // thread can't acquire lock
+ testsTurn.acquire();
+ normalMutex.lock();
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ threadsTurn.release();
+
+ // thread can acquire lock
+ testsTurn.acquire();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ normalMutex.unlock();
+ threadsTurn.release();
+
+ // thread can't acquire lock, timeout = waitTime
+ testsTurn.acquire();
+ normalMutex.lock();
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ threadsTurn.release();
+
+ // thread can acquire lock, timeout = waitTime
+ testsTurn.acquire();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ normalMutex.unlock();
+ threadsTurn.release();
+
+ // thread can't acquire lock, timeout = 0
+ testsTurn.acquire();
+ normalMutex.lock();
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ threadsTurn.release();
+
+ // thread can acquire lock, timeout = 0
+ testsTurn.acquire();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ normalMutex.unlock();
+ threadsTurn.release();
+
+ // wait for thread to finish
+ testsTurn.acquire();
+ threadsTurn.release();
+ thread.wait();
+ }
+
+ // test recursive mutex
+ {
+ class Thread : public QThread
+ {
+ public:
+ void run()
+ {
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ QVERIFY(!recursiveMutex.tryLock());
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ QVERIFY(recursiveMutex.tryLock());
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ QVERIFY(recursiveMutex.tryLock());
+ QVERIFY(lockCount.testAndSetRelaxed(1, 2));
+ QVERIFY(lockCount.testAndSetRelaxed(2, 1));
+ recursiveMutex.unlock();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ recursiveMutex.unlock();
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ QTime timer;
+ timer.start();
+ QVERIFY(!recursiveMutex.tryLock(waitTime));
+ QVERIFY(timer.elapsed() >= waitTime);
+ QVERIFY(!recursiveMutex.tryLock(0));
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ timer.start();
+ QVERIFY(recursiveMutex.tryLock(waitTime));
+ QVERIFY(timer.elapsed() <= waitTime);
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ QVERIFY(recursiveMutex.tryLock(waitTime));
+ QVERIFY(lockCount.testAndSetRelaxed(1, 2));
+ QVERIFY(lockCount.testAndSetRelaxed(2, 1));
+ recursiveMutex.unlock();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ recursiveMutex.unlock();
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ QVERIFY(!recursiveMutex.tryLock(0));
+ QVERIFY(!recursiveMutex.tryLock(0));
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ timer.start();
+ QVERIFY(recursiveMutex.tryLock(0));
+ QVERIFY(timer.elapsed() < waitTime);
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ QVERIFY(recursiveMutex.tryLock(0));
+ QVERIFY(lockCount.testAndSetRelaxed(1, 2));
+ QVERIFY(lockCount.testAndSetRelaxed(2, 1));
+ recursiveMutex.unlock();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ recursiveMutex.unlock();
+ testsTurn.release();
+
+ threadsTurn.acquire();
+ }
+ };
+
+ Thread thread;
+ thread.start();
+
+ // thread can't acquire lock
+ testsTurn.acquire();
+ recursiveMutex.lock();
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ recursiveMutex.lock();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 2));
+ threadsTurn.release();
+
+ // thread can acquire lock
+ testsTurn.acquire();
+ QVERIFY(lockCount.testAndSetRelaxed(2, 1));
+ recursiveMutex.unlock();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ recursiveMutex.unlock();
+ threadsTurn.release();
+
+ // thread can't acquire lock, timeout = waitTime
+ testsTurn.acquire();
+ recursiveMutex.lock();
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ recursiveMutex.lock();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 2));
+ threadsTurn.release();
+
+ // thread can acquire lock, timeout = waitTime
+ testsTurn.acquire();
+ QVERIFY(lockCount.testAndSetRelaxed(2, 1));
+ recursiveMutex.unlock();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ recursiveMutex.unlock();
+ threadsTurn.release();
+
+ // thread can't acquire lock, timeout = 0
+ testsTurn.acquire();
+ recursiveMutex.lock();
+ QVERIFY(lockCount.testAndSetRelaxed(0, 1));
+ recursiveMutex.lock();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 2));
+ threadsTurn.release();
+
+ // thread can acquire lock, timeout = 0
+ testsTurn.acquire();
+ QVERIFY(lockCount.testAndSetRelaxed(2, 1));
+ recursiveMutex.unlock();
+ QVERIFY(lockCount.testAndSetRelaxed(1, 0));
+ recursiveMutex.unlock();
+ threadsTurn.release();
+
+ // stop thread
+ testsTurn.acquire();
+ threadsTurn.release();
+ thread.wait();
+ }
+}
+
+class mutex_Thread : public QThread
+{
+public:
+ QMutex mutex;
+ QWaitCondition cond;
+
+ QMutex &test_mutex;
+
+ inline mutex_Thread(QMutex &m) : test_mutex(m) { }
+
+ void run()
+ {
+ test_mutex.lock();
+
+ mutex.lock();
+ for (int i = 0; i < iterations; ++i) {
+ cond.wakeOne();
+ cond.wait(&mutex);
+ }
+ mutex.unlock();
+
+ test_mutex.unlock();
+ }
+};
+
+class rmutex_Thread : public QThread
+{
+public:
+ QMutex mutex;
+ QWaitCondition cond;
+
+ QMutex &test_mutex;
+
+ inline rmutex_Thread(QMutex &m) : test_mutex(m) { }
+
+ void run()
+ {
+ test_mutex.lock();
+ test_mutex.lock();
+ test_mutex.lock();
+ test_mutex.lock();
+
+ mutex.lock();
+ for (int i = 0; i < iterations; ++i) {
+ cond.wakeOne();
+ cond.wait(&mutex);
+ }
+ mutex.unlock();
+
+ test_mutex.unlock();
+ test_mutex.unlock();
+ test_mutex.unlock();
+ test_mutex.unlock();
+ }
+};
+
+void tst_QMutex::lock_unlock_locked_tryLock()
+{
+ // normal mutex
+ QMutex mutex;
+ mutex_Thread thread(mutex);
+
+ QMutex rmutex(QMutex::Recursive);
+ rmutex_Thread rthread(rmutex);
+
+ for (int i = 0; i < iterations; ++i) {
+ // normal mutex
+ QVERIFY(mutex.tryLock());
+ mutex.unlock();
+
+ thread.mutex.lock();
+ thread.start();
+
+ for (int j = 0; j < iterations; ++j) {
+ QVERIFY(thread.cond.wait(&thread.mutex, 10000));
+ QVERIFY(!mutex.tryLock());
+
+ thread.cond.wakeOne();
+ }
+
+ thread.mutex.unlock();
+
+ QVERIFY(thread.wait(10000));
+ QVERIFY(mutex.tryLock());
+
+ mutex.unlock();
+
+ // recursive mutex
+ QVERIFY(rmutex.tryLock());
+ QVERIFY(rmutex.tryLock());
+ QVERIFY(rmutex.tryLock());
+ QVERIFY(rmutex.tryLock());
+
+ rmutex.unlock();
+ rmutex.unlock();
+ rmutex.unlock();
+ rmutex.unlock();
+
+ rthread.mutex.lock();
+ rthread.start();
+
+ for (int k = 0; k < iterations; ++k) {
+ QVERIFY(rthread.cond.wait(&rthread.mutex, 10000));
+ QVERIFY(!rmutex.tryLock());
+
+ rthread.cond.wakeOne();
+ }
+
+ rthread.mutex.unlock();
+
+ QVERIFY(rthread.wait(10000));
+ QVERIFY(rmutex.tryLock());
+ QVERIFY(rmutex.tryLock());
+ QVERIFY(rmutex.tryLock());
+ QVERIFY(rmutex.tryLock());
+
+ rmutex.unlock();
+ rmutex.unlock();
+ rmutex.unlock();
+ rmutex.unlock();
+ }
+}
+
+enum { one_minute = 6 * 1000, //not really one minute, but else it is too long.
+ threadCount = 10 };
+
+class StressTestThread : public QThread
+{
+ QTime t;
+public:
+ static QBasicAtomicInt lockCount;
+ static QBasicAtomicInt sentinel;
+ static QMutex mutex;
+ static int errorCount;
+ void start()
+ {
+ t.start();
+ QThread::start();
+ }
+ void run()
+ {
+ while (t.elapsed() < one_minute) {
+ mutex.lock();
+ if (sentinel.ref()) ++errorCount;
+ if (!sentinel.deref()) ++errorCount;
+ lockCount.ref();
+ mutex.unlock();
+ if (mutex.tryLock()) {
+ if (sentinel.ref()) ++errorCount;
+ if (!sentinel.deref()) ++errorCount;
+ lockCount.ref();
+ mutex.unlock();
+ }
+ }
+ }
+};
+QMutex StressTestThread::mutex;
+QBasicAtomicInt StressTestThread::lockCount = Q_BASIC_ATOMIC_INITIALIZER(0);
+QBasicAtomicInt StressTestThread::sentinel = Q_BASIC_ATOMIC_INITIALIZER(-1);
+int StressTestThread::errorCount = 0;
+
+void tst_QMutex::stressTest()
+{
+ StressTestThread threads[threadCount];
+ for (int i = 0; i < threadCount; ++i)
+ threads[i].start();
+ QVERIFY(threads[0].wait(one_minute + 10000));
+ for (int i = 1; i < threadCount; ++i)
+ QVERIFY(threads[i].wait(10000));
+ QCOMPARE(StressTestThread::errorCount, 0);
+ qDebug("locked %d times", int(StressTestThread::lockCount));
+}
+
+class TryLockRaceThread : public QThread
+{
+public:
+ static QMutex mutex;
+
+ void run()
+ {
+ QTime t;
+ t.start();
+ do {
+ if (mutex.tryLock())
+ mutex.unlock();
+ } while (t.elapsed() < one_minute/2);
+ }
+};
+QMutex TryLockRaceThread::mutex;
+
+void tst_QMutex::tryLockRace()
+{
+ // mutex not in use, should be able to lock it
+ QVERIFY(TryLockRaceThread::mutex.tryLock());
+ TryLockRaceThread::mutex.unlock();
+
+ // try to break tryLock
+ TryLockRaceThread thread[threadCount];
+ for (int i = 0; i < threadCount; ++i)
+ thread[i].start();
+ for (int i = 0; i < threadCount; ++i)
+ QVERIFY(thread[i].wait());
+
+ // mutex not in use, should be able to lock it
+ QVERIFY(TryLockRaceThread::mutex.tryLock());
+ TryLockRaceThread::mutex.unlock();
+}
+
+// Variable that will be protected by the mutex. Volatile so that the
+// the optimiser doesn't mess with it based on the increment-then-decrement
+// usage pattern.
+static volatile int qtbug16115_trylock_counter;
+// Counter for how many times the protected variable has an incorrect value.
+static int qtbug16115_failure_count = 0;
+
+void tst_QMutex::qtbug16115_trylock()
+{
+ //Used to deadlock on unix
+ struct TrylockThread : QThread {
+ TrylockThread(QMutex &mut) : mut(mut) {}
+ QMutex &mut;
+ void run() {
+ for (int i = 0; i < 100000; ++i) {
+ if (mut.tryLock(0)) {
+ if ((++qtbug16115_trylock_counter) != 1)
+ ++qtbug16115_failure_count;
+ if ((--qtbug16115_trylock_counter) != 0)
+ ++qtbug16115_failure_count;
+ mut.unlock();
+ }
+ }
+ }
+ };
+ QMutex mut;
+ TrylockThread t1(mut);
+ TrylockThread t2(mut);
+ TrylockThread t3(mut);
+ t1.start();
+ t2.start();
+ t3.start();
+
+ for (int i = 0; i < 100000; ++i) {
+ mut.lock();
+ if ((++qtbug16115_trylock_counter) != 1)
+ ++qtbug16115_failure_count;
+ if ((--qtbug16115_trylock_counter) != 0)
+ ++qtbug16115_failure_count;
+ mut.unlock();
+ }
+ t1.wait();
+ t2.wait();
+ t3.wait();
+ QCOMPARE(qtbug16115_failure_count, 0);
+}
+
+
+class MoreStressTestThread : public QThread
+{
+ QTime t;
+public:
+ static QAtomicInt lockCount;
+ static QAtomicInt sentinel[threadCount];
+ static QMutex mutex[threadCount];
+ static QAtomicInt errorCount;
+ void start()
+ {
+ t.start();
+ QThread::start();
+ }
+ void run()
+ {
+ quint64 i = 0;
+ while (t.elapsed() < one_minute) {
+ i++;
+ uint nb = (i * 9 + lockCount * 13) % threadCount;
+ QMutexLocker locker(&mutex[nb]);
+ if (sentinel[nb]) errorCount.ref();
+ if (sentinel[nb].fetchAndAddRelaxed(5)) errorCount.ref();
+ if (!sentinel[nb].testAndSetRelaxed(5, 0)) errorCount.ref();
+ if (sentinel[nb]) errorCount.ref();
+ lockCount.ref();
+ nb = (nb * 17 + i * 5 + lockCount * 3) % threadCount;
+ if (mutex[nb].tryLock()) {
+ if (sentinel[nb]) errorCount.ref();
+ if (sentinel[nb].fetchAndAddRelaxed(16)) errorCount.ref();
+ if (!sentinel[nb].testAndSetRelaxed(16, 0)) errorCount.ref();
+ if (sentinel[nb]) errorCount.ref();
+ lockCount.ref();
+ mutex[nb].unlock();
+ }
+ nb = (nb * 15 + i * 47 + lockCount * 31) % threadCount;
+ if (mutex[nb].tryLock(2)) {
+ if (sentinel[nb]) errorCount.ref();
+ if (sentinel[nb].fetchAndAddRelaxed(53)) errorCount.ref();
+ if (!sentinel[nb].testAndSetRelaxed(53, 0)) errorCount.ref();
+ if (sentinel[nb]) errorCount.ref();
+ lockCount.ref();
+ mutex[nb].unlock();
+ }
+ }
+ }
+};
+QMutex MoreStressTestThread::mutex[threadCount];
+QAtomicInt MoreStressTestThread::lockCount;
+QAtomicInt MoreStressTestThread::sentinel[threadCount];
+QAtomicInt MoreStressTestThread::errorCount = 0;
+
+void tst_QMutex::moreStress()
+{
+ MoreStressTestThread threads[threadCount];
+ for (int i = 0; i < threadCount; ++i)
+ threads[i].start();
+ QVERIFY(threads[0].wait(one_minute + 10000));
+ for (int i = 1; i < threadCount; ++i)
+ QVERIFY(threads[i].wait(10000));
+ qDebug("locked %d times", int(MoreStressTestThread::lockCount));
+ QCOMPARE(int(MoreStressTestThread::errorCount), 0);
+}
+
+
+QTEST_MAIN(tst_QMutex)
+#include "tst_qmutex.moc"