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    40 ****************************************************************************/

    41 

    42 

    43 #include <QtTest/QtTest>

    44 

    45 #include <QCoreApplication>

    46 #include <QMutexLocker>

    47 #include <QSemaphore>

    48 #include <QThread>

    49 

    50 //TESTED_CLASS=

    51 //TESTED_FILES=

    52 

    53 class tst_QMutexLockerThread : public QThread

    54 {

    55 public:

    56     QMutex mutex;

    57     QSemaphore semaphore, testSemaphore;

    58 

    59     void waitForTest()

    60     {

    61         semaphore.release();

    62         testSemaphore.acquire();

    63     }

    64 

    65     tst_QMutexLockerThread()

    66         : mutex(QMutex::Recursive)

    67     {

    68     }

    69 };

    70 

    71 class tst_QMutexLocker : public QObject

    72 {

    73     Q_OBJECT

    74 

    75 public:

    76     tst_QMutexLocker();

    77     ~tst_QMutexLocker();

    78 

    79     tst_QMutexLockerThread *thread;

    80 

    81     void waitForThread()

    82     {

    83         thread->semaphore.acquire();

    84     }

    85     void releaseThread()

    86     {

    87         thread->testSemaphore.release();

    88     }

    89 

    90 private slots:

    91     void scopeTest();

    92     void unlockAndRelockTest();

    93     void lockerStateTest();

    94 };

    95 

    96 tst_QMutexLocker::tst_QMutexLocker()

    97 {

    98 }

    99 

   100 tst_QMutexLocker::~tst_QMutexLocker()

   101 {

   102 }

   103 

   104 void tst_QMutexLocker::scopeTest()

   105 {

   106     class ScopeTestThread : public tst_QMutexLockerThread

   107     {

   108     public:

   109         void run()

   110         {

   111             waitForTest();

   112 

   113             {

   114                 QMutexLocker locker(&mutex);

   115                 waitForTest();

   116             }

   117 

   118             waitForTest();

   119         }

   120     };

   121 

   122     thread = new ScopeTestThread;

   123     thread->start();

   124 

   125     waitForThread();

   126     // mutex should be unlocked before entering the scope that creates the QMutexLocker

   127     QVERIFY(thread->mutex.tryLock());

   128     thread->mutex.unlock();

   129     releaseThread();

   130 

   131     waitForThread();

   132     // mutex should be locked by the QMutexLocker

   133     QVERIFY(!thread->mutex.tryLock());

   134     releaseThread();

   135 

   136     waitForThread();

   137     // mutex should be unlocked when the QMutexLocker goes out of scope

   138     QVERIFY(thread->mutex.tryLock());

   139     thread->mutex.unlock();

   140     releaseThread();

   141 

   142     QVERIFY(thread->wait());

   143 

   144     delete thread;

   145     thread = 0;

   146 }

   147 

   148 

   149 void tst_QMutexLocker::unlockAndRelockTest()

   150 {

   151     class UnlockAndRelockThread : public tst_QMutexLockerThread

   152     {

   153     public:

   154         void run()

   155         {

   156             QMutexLocker locker(&mutex);

   157 

   158             waitForTest();

   159 

   160             locker.unlock();

   161 

   162             waitForTest();

   163 

   164             locker.relock();

   165 

   166             waitForTest();

   167         }

   168     };

   169 

   170     thread = new UnlockAndRelockThread;

   171     thread->start();

   172 

   173     waitForThread();

   174     // mutex should be locked by the QMutexLocker

   175     QVERIFY(!thread->mutex.tryLock());

   176     releaseThread();

   177 

   178     waitForThread();

   179     // mutex has been explicitly unlocked via QMutexLocker

   180     QVERIFY(thread->mutex.tryLock());

   181     thread->mutex.unlock();

   182     releaseThread();

   183 

   184     waitForThread();

   185     // mutex has been explicity relocked via QMutexLocker

   186     QVERIFY(!thread->mutex.tryLock());

   187     releaseThread();

   188 

   189     QVERIFY(thread->wait());

   190 

   191     delete thread;

   192     thread = 0;

   193 }

   194 

   195 void tst_QMutexLocker::lockerStateTest()

   196 {

   197     class LockerStateThread : public tst_QMutexLockerThread

   198     {

   199     public:

   200         void run()

   201         {

   202             {

   203                 QMutexLocker locker(&mutex);

   204                 locker.relock();

   205                 locker.unlock();

   206 

   207                 waitForTest();

   208             }

   209 

   210             waitForTest();

   211         }

   212     };

   213 

   214     thread = new LockerStateThread;

   215     thread->start();

   216 

   217     waitForThread();

   218     // even though we relock() after creating the QMutexLocker, it shouldn't lock the mutex more than once

   219     QVERIFY(thread->mutex.tryLock());

   220     thread->mutex.unlock();

   221     releaseThread();

   222 

   223     waitForThread();

   224     // if we call QMutexLocker::unlock(), its destructor should do nothing

   225     QVERIFY(thread->mutex.tryLock());

   226     thread->mutex.unlock();

   227     releaseThread();

   228 

   229     QVERIFY(thread->wait());

   230 

   231     delete thread;

   232     thread = 0;

   233 }

   234 

   235 QTEST_MAIN(tst_QMutexLocker)

   236 #include "tst_qmutexlocker.moc"