diff options
author | Allan Sandfeld Jensen <allan.jensen@qt.io> | 2017-10-24 10:37:17 +0200 |
---|---|---|
committer | Liang Qi <liang.qi@qt.io> | 2017-10-24 13:40:55 +0200 |
commit | fa9d12f4a20d618caedc77880459fa1af75fd50d (patch) | |
tree | 11bd3cb4541afb924b3ee17f867133e71eb0e090 /tests/auto/corelib/thread | |
parent | 895cb4681ee78caaf9b99c88390a74ff1d79ae61 (diff) | |
parent | f174d31667dca184439f520b9624a1471d9556a6 (diff) |
Merge remote-tracking branch 'origin/5.10' into dev
Conflicts:
src/plugins/platforms/windows/qwindowsmousehandler.cpp
src/plugins/platforms/xcb/qxcbimage.cpp
tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp
tests/manual/qtabletevent/regular_widgets/main.cpp
Done-with: Friedemann Kleint<Friedemann.Kleint@qt.io>
Done-with: MÃ¥rten Nordheim<marten.nordheim@qt.io>
Change-Id: I5b2499513a92c590ed0756f7d2e93c35a64b7f30
Diffstat (limited to 'tests/auto/corelib/thread')
-rw-r--r-- | tests/auto/corelib/thread/qthreadpool/tst_qthreadpool.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/tests/auto/corelib/thread/qthreadpool/tst_qthreadpool.cpp b/tests/auto/corelib/thread/qthreadpool/tst_qthreadpool.cpp index 782eed03e8..094c6ed0a5 100644 --- a/tests/auto/corelib/thread/qthreadpool/tst_qthreadpool.cpp +++ b/tests/auto/corelib/thread/qthreadpool/tst_qthreadpool.cpp @@ -94,6 +94,7 @@ private slots: void destroyingWaitsForTasksToFinish(); void stackSize(); void stressTest(); + void takeAllAndIncreaseMaxThreadCount(); private: QMutex m_functionTestMutex; @@ -1203,5 +1204,68 @@ void tst_QThreadPool::stressTest() } } +void tst_QThreadPool::takeAllAndIncreaseMaxThreadCount() { + class Task : public QRunnable + { + public: + Task(QSemaphore *mainBarrier, QSemaphore *threadBarrier) + : m_mainBarrier(mainBarrier) + , m_threadBarrier(threadBarrier) + { + setAutoDelete(false); + } + + void run() { + m_mainBarrier->release(); + m_threadBarrier->acquire(); + } + private: + QSemaphore *m_mainBarrier; + QSemaphore *m_threadBarrier; + }; + + QSemaphore mainBarrier; + QSemaphore taskBarrier; + + QThreadPool threadPool; + threadPool.setMaxThreadCount(1); + + Task *task1 = new Task(&mainBarrier, &taskBarrier); + Task *task2 = new Task(&mainBarrier, &taskBarrier); + Task *task3 = new Task(&mainBarrier, &taskBarrier); + + threadPool.start(task1); + threadPool.start(task2); + threadPool.start(task3); + + mainBarrier.acquire(1); + + QCOMPARE(threadPool.activeThreadCount(), 1); + + QVERIFY(!threadPool.tryTake(task1)); + QVERIFY(threadPool.tryTake(task2)); + QVERIFY(threadPool.tryTake(task3)); + + // A bad queue implementation can segfault here because two consecutive items in the queue + // have been taken + threadPool.setMaxThreadCount(4); + + // Even though we increase the max thread count, there should only be one job to run + QCOMPARE(threadPool.activeThreadCount(), 1); + + // Make sure jobs 2 and 3 never started + QCOMPARE(mainBarrier.available(), 0); + + taskBarrier.release(1); + + threadPool.waitForDone(); + + QCOMPARE(threadPool.activeThreadCount(), 0); + + delete task1; + delete task2; + delete task3; +} + QTEST_MAIN(tst_QThreadPool); #include "tst_qthreadpool.moc" |