void tst_iteratekernel::cancel()
{
{
QFuture<void> f = startThreadEngine(new SleepPrintFor(0, 40)).startAsynchronously();
f.cancel();
f.waitForFinished();
QVERIFY(f.isCanceled());
QVERIFY(int(iterations) <= QThread::idealThreadCount()); // the threads might run one iteration each before they are canceled.
}
}
void tst_QtConcurrentIterateKernel::cancel()
{
{
QFuture<void> f = startThreadEngine(new SleepPrintFor(0, 40)).startAsynchronously();
f.cancel();
f.waitForFinished();
QVERIFY(f.isCanceled());
// the threads might run one iteration each before they are canceled.
QVERIFY2(iterations.load() <= QThread::idealThreadCount(),
(QByteArray::number(iterations.load()) + ' ' + QByteArray::number(QThread::idealThreadCount())));
}
}
void RefactoringEngine::startLocalRenaming(const CppTools::CursorInEditor &data,
CppTools::ProjectPart *,
RenameCallback &&renameSymbolsCallback)
{
ClangEditorDocumentProcessor *processor = ClangEditorDocumentProcessor::get(
data.filePath().toString());
const int startRevision = data.cursor().document()->revision();
using ClangBackEnd::SourceLocationsContainer;
auto defaultCallback = [renameSymbolsCallback, startRevision]() {
return renameSymbolsCallback(QString(), SourceLocationsContainer{}, startRevision);
};
if (!processor)
return defaultCallback();
QFuture<CppTools::CursorInfo> cursorFuture = processor->requestLocalReferences(data.cursor());
if (cursorFuture.isCanceled())
return defaultCallback();
if (m_watcher)
m_watcher->cancel();
m_watcher.reset(new FutureCursorWatcher());
QObject::connect(m_watcher.get(), &FutureCursorWatcher::finished, [=]() {
if (m_watcher->isCanceled())
return defaultCallback();
const CppTools::CursorInfo info = m_watcher->result();
if (info.useRanges.empty())
return defaultCallback();
QTextCursor cursor = Utils::Text::wordStartCursor(data.cursor());
cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor,
info.useRanges.first().length);
const QString symbolName = cursor.selectedText();
ClangBackEnd::SourceLocationsContainer container;
for (auto& use : info.useRanges) {
container.insertSourceLocation(ClangBackEnd::FilePathId(),
use.line,
use.column,
use.length);
}
renameSymbolsCallback(symbolName, container, data.cursor().document()->revision());
});
m_watcher->setFuture(cursorFuture);
}
void tst_QFutureWatcher::canceled()
{
const int listSize = 20;
QList<int> list = createList(listSize);
QFutureWatcher<void> futureWatcher;
QFuture<void> future;
CancelObject cancelObject;
QObject::connect(&futureWatcher, SIGNAL(canceled()), &cancelObject, SLOT(cancel()));
QObject::connect(&futureWatcher, SIGNAL(canceled()),
&QTestEventLoop::instance(), SLOT(exitLoop()), Qt::QueuedConnection);
future = QtConcurrent::map(list, mapSleeper);
futureWatcher.setFuture(future);
futureWatcher.cancel();
QTestEventLoop::instance().enterLoop(5);
QVERIFY(!QTestEventLoop::instance().timeout());
QVERIFY(future.isCanceled());
QVERIFY(cancelObject.wasCanceled);
futureWatcher.disconnect();
future.waitForFinished();
}
void tst_QFuture::cancel()
{
{
QFuture<void> f;
QFutureInterface<void> result;
result.reportStarted();
f = result.future();
QVERIFY(!f.isCanceled());
result.reportCanceled();
QVERIFY(f.isCanceled());
result.reportFinished();
QVERIFY(f.isCanceled());
f.waitForFinished();
QVERIFY(f.isCanceled());
}
// Cancel from the QFuture side and test if the result
// interface detects it.
{
QFutureInterface<void> result;
QFuture<void> f;
QVERIFY(f.isStarted());
result.reportStarted();
f = result.future();
QVERIFY(f.isStarted());
QVERIFY(!result.isCanceled());
f.cancel();
QVERIFY(result.isCanceled());
result.reportFinished();
}
// Test that finished futures can be canceled.
{
QFutureInterface<void> result;
QFuture<void> f;
QVERIFY(f.isStarted());
result.reportStarted();
f = result.future();
QVERIFY(f.isStarted());
result.reportFinished();
f.cancel();
QVERIFY(result.isCanceled());
QVERIFY(f.isCanceled());
}
// Results reported after canceled is called should not be propagated.
{
QFutureInterface<int> futureInterface;
futureInterface.reportStarted();
QFuture<int> f = futureInterface.future();
int result = 0;
futureInterface.reportResult(&result);
result = 1;
futureInterface.reportResult(&result);
f.cancel();
result = 2;
futureInterface.reportResult(&result);
result = 3;
futureInterface.reportResult(&result);
futureInterface.reportFinished();
QCOMPARE(f.results(), QList<int>());
}
}
void tst_QFuture::futureInterface()
{
{
QFuture<void> future;
{
QFutureInterface<void> i;
i.reportStarted();
future = i.future();
i.reportFinished();
}
}
{
QFuture<int> future;
{
QFutureInterface<int> i;
i.reportStarted();
i.reportResult(10);
future = i.future();
i.reportFinished();
}
QCOMPARE(future.resultAt(0), 10);
}
{
QFuture<int> intFuture;
QCOMPARE(intFuture.isStarted(), true);
QCOMPARE(intFuture.isFinished(), true);
IntResult result;
result.reportStarted();
intFuture = result.future();
QCOMPARE(intFuture.isStarted(), true);
QCOMPARE(intFuture.isFinished(), false);
result.reportFinished(&value);
QCOMPARE(intFuture.isStarted(), true);
QCOMPARE(intFuture.isFinished(), true);
int e = intFuture.result();
QCOMPARE(intFuture.isStarted(), true);
QCOMPARE(intFuture.isFinished(), true);
QCOMPARE(intFuture.isCanceled(), false);
QCOMPARE(e, value);
intFuture.waitForFinished();
IntResult intAlgo;
intFuture = intAlgo.run();
QFuture<int> intFuture2(intFuture);
QCOMPARE(intFuture.result(), value);
QCOMPARE(intFuture2.result(), value);
intFuture.waitForFinished();
VoidResult a;
a.run().waitForFinished();
}
}
