本文整理汇总了C++中QThreadPool::tryStart方法的典型用法代码示例。如果您正苦于以下问题：C++ QThreadPool::tryStart方法的具体用法？C++ QThreadPool::tryStart怎么用？C++ QThreadPool::tryStart使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QThreadPool的用法示例。
在下文中一共展示了QThreadPool::tryStart方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: tryStartCount
void tst_QThreadPool::tryStartCount()
{
class SleeperTask : public QRunnable
{
public:
SleeperTask() { setAutoDelete(false); }
void run()
{
QTest::qWait(50);
}
};
SleeperTask task;
QThreadPool threadPool;
const int runs = 5;
for (int i = 0; i < runs; ++i) {
int count = 0;
while (threadPool.tryStart(&task))
++count;
QCOMPARE(count, QThread::idealThreadCount());
QTest::qWait(100);
}
}示例2: tryStart
void tst_QThreadPool::tryStart()
{
class WaitingTask : public QRunnable
{
public:
QSemaphore semaphore;
WaitingTask() { setAutoDelete(false); }
void run()
{
semaphore.acquire();
count.ref();
}
};
count.store(0);
WaitingTask task;
QThreadPool threadPool;
for (int i = 0; i < threadPool.maxThreadCount(); ++i) {
threadPool.start(&task);
}
QVERIFY(!threadPool.tryStart(&task));
task.semaphore.release(threadPool.maxThreadCount());
threadPool.waitForDone();
QCOMPARE(count.load(), threadPool.maxThreadCount());
}示例3: PyBool_FromLong
static PyObject *meth_QThreadPool_tryStart(PyObject *sipSelf, PyObject *sipArgs)
{
PyObject *sipParseErr = NULL;
{
QRunnable* a0;
PyObject *a0Wrapper;
QThreadPool *sipCpp;
if (sipParseArgs(&sipParseErr, sipArgs, "[email protected]", &sipSelf, sipType_QThreadPool, &sipCpp, &a0Wrapper, sipType_QRunnable, &a0))
{
bool sipRes = 0;
#line 53 "/Users/Kunwiji/Dropbox/Spectroscopy_paper/PyQt-mac-gpl-4.11.2/sip/QtCore/qthreadpool.sip"
// We have to handle the object ownership manually.
if (a0->autoDelete())
sipTransferTo(a0Wrapper, sipSelf);
Py_BEGIN_ALLOW_THREADS
sipRes = sipCpp->tryStart(a0);
Py_END_ALLOW_THREADS
#line 362 "/Users/Kunwiji/Dropbox/Spectroscopy_paper/PyQt-mac-gpl-4.11.2/QtCore/sipQtCoreQThreadPool.cpp"
return PyBool_FromLong(sipRes);
}
}示例4: tryStartPeakThreadCount
void tst_QThreadPool::tryStartPeakThreadCount()
{
class CounterTask : public QRunnable
{
public:
CounterTask() { setAutoDelete(false); }
void run()
{
{
QMutexLocker lock(&mutex);
++activeThreads;
peakActiveThreads = qMax(peakActiveThreads, activeThreads);
}
QTest::qWait(100);
{
QMutexLocker lock(&mutex);
--activeThreads;
}
}
};
CounterTask task;
QThreadPool threadPool;
for (int i = 0; i < 20; ++i) {
if (threadPool.tryStart(&task) == false)
QTest::qWait(10);
}
QCOMPARE(peakActiveThreads, QThread::idealThreadCount());
for (int i = 0; i < 20; ++i) {
if (threadPool.tryStart(&task) == false)
QTest::qWait(10);
}
QCOMPARE(peakActiveThreads, QThread::idealThreadCount());
}