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    41 

    42 

    43 #include <QtTest/QtTest>

    44 

    45 #include <QCoreApplication>

    46 #include <QReadLocker>

    47 #include <QSemaphore>

    48 #include <QThread>

    49 

    50 //TESTED_CLASS=

    51 //TESTED_FILES=

    52 

    53 class tst_QReadLockerThread : public QThread

    54 {

    55 public:

    56     QReadWriteLock lock;

    57     QSemaphore semaphore, testSemaphore;

    58 

    59     void waitForTest()

    60     {

    61         semaphore.release();

    62         testSemaphore.acquire();

    63     }

    64 };

    65 

    66 class tst_QReadLocker : public QObject

    67 {

    68     Q_OBJECT

    69 

    70 public:

    71     tst_QReadLocker();

    72     ~tst_QReadLocker();

    73 

    74     tst_QReadLockerThread *thread;

    75 

    76     void waitForThread()

    77     {

    78         thread->semaphore.acquire();

    79     }

    80     void releaseThread()

    81     {

    82         thread->testSemaphore.release();

    83     }

    84 

    85 private slots:

    86     void scopeTest();

    87     void unlockAndRelockTest();

    88     void lockerStateTest();

    89 };

    90 

    91 tst_QReadLocker::tst_QReadLocker()

    92 {

    93 }

    94 

    95 tst_QReadLocker::~tst_QReadLocker()

    96 {

    97 }

    98 

    99 void tst_QReadLocker::scopeTest()

   100 {

   101     class ScopeTestThread : public tst_QReadLockerThread

   102     {

   103     public:

   104         void run()

   105         {

   106             waitForTest();

   107 

   108             {

   109                 QReadLocker locker(&lock);

   110                 waitForTest();

   111             }

   112 

   113             waitForTest();

   114         }

   115     };

   116 

   117     thread = new ScopeTestThread;

   118     thread->start();

   119 

   120     waitForThread();

   121     // lock should be unlocked before entering the scope that creates the QReadLocker

   122     QVERIFY(thread->lock.tryLockForWrite());

   123     thread->lock.unlock();

   124     releaseThread();

   125 

   126     waitForThread();

   127     // lock should be locked by the QReadLocker

   128     QVERIFY(!thread->lock.tryLockForWrite());

   129     releaseThread();

   130 

   131     waitForThread();

   132     // lock should be unlocked when the QReadLocker goes out of scope

   133     QVERIFY(thread->lock.tryLockForWrite());

   134     thread->lock.unlock();

   135     releaseThread();

   136 

   137     QVERIFY(thread->wait());

   138 

   139     delete thread;

   140     thread = 0;

   141 }

   142 

   143 

   144 void tst_QReadLocker::unlockAndRelockTest()

   145 {

   146     class UnlockAndRelockThread : public tst_QReadLockerThread

   147     {

   148     public:

   149         void run()

   150         {

   151             QReadLocker locker(&lock);

   152 

   153             waitForTest();

   154 

   155             locker.unlock();

   156 

   157             waitForTest();

   158 

   159             locker.relock();

   160 

   161             waitForTest();

   162         }

   163     };

   164 

   165     thread = new UnlockAndRelockThread;

   166     thread->start();

   167 

   168     waitForThread();

   169     // lock should be locked by the QReadLocker

   170     QVERIFY(!thread->lock.tryLockForWrite());

   171     releaseThread();

   172 

   173     waitForThread();

   174     // lock has been explicitly unlocked via QReadLocker

   175     QVERIFY(thread->lock.tryLockForWrite());

   176     thread->lock.unlock();

   177     releaseThread();

   178 

   179     waitForThread();

   180     // lock has been explicity relocked via QReadLocker

   181     QVERIFY(!thread->lock.tryLockForWrite());

   182     releaseThread();

   183 

   184     QVERIFY(thread->wait());

   185 

   186     delete thread;

   187     thread = 0;

   188 }

   189 

   190 void tst_QReadLocker::lockerStateTest()

   191 {

   192     class LockerStateThread : public tst_QReadLockerThread

   193     {

   194     public:

   195         void run()

   196         {

   197             {

   198                 QReadLocker locker(&lock);

   199                 locker.relock();

   200                 locker.unlock();

   201 

   202                 waitForTest();

   203             }

   204 

   205             waitForTest();

   206         }

   207     };

   208 

   209     thread = new LockerStateThread;

   210     thread->start();

   211 

   212     waitForThread();

   213     // even though we relock() after creating the QReadLocker, it shouldn't lock the lock more than once

   214     QVERIFY(thread->lock.tryLockForWrite());

   215     thread->lock.unlock();

   216     releaseThread();

   217 

   218     waitForThread();

   219     // if we call QReadLocker::unlock(), its destructor should do nothing

   220     QVERIFY(thread->lock.tryLockForWrite());

   221     thread->lock.unlock();

   222     releaseThread();

   223 

   224     QVERIFY(thread->wait());

   225 

   226     delete thread;

   227     thread = 0;

   228 }

   229 

   230 QTEST_MAIN(tst_QReadLocker)

   231 #include "tst_qreadlocker.moc"