qt5base-lts/tests/auto/concurrent/qtconcurrentrun/tst_qtconcurrentrun.cpp

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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qtconcurrentrun.h>
#include <qfuture.h>
#include <QString>
#include <QtTest/QtTest>
using namespace QtConcurrent;
class tst_QtConcurrentRun: public QObject
{
Q_OBJECT
private slots:
void runLightFunction();
void runHeavyFunction();
void returnValue();
void functionObject();
void memberFunctions();
void implicitConvertibleTypes();
void runWaitLoop();
void recursive();
#ifndef QT_NO_EXCEPTIONS
void exceptions();
#endif
void functor();
void lambda();
};
void light()
{
qDebug("in function");
qDebug("done function");
}
void heavy()
{
qDebug("in function");
QString str;
for (int i = 0; i < 1000000; ++i)
str.append("a");
qDebug("done function");
}
void tst_QtConcurrentRun::runLightFunction()
{
qDebug("starting function");
QFuture<void> future = run(light);
qDebug("waiting");
future.waitForFinished();
qDebug("done");
}
void tst_QtConcurrentRun::runHeavyFunction()
{
qDebug("starting function");
QFuture<void> future = run(heavy);
qDebug("waiting");
future.waitForFinished();
qDebug("done");
}
int returnInt0()
{
return 10;
}
int returnInt1(int i)
{
return i;
}
class A
{
public:
int member0() { return 10; }
int member1(int in) { return in; }
typedef int result_type;
int operator()() { return 10; }
int operator()(int in) { return in; }
};
class AConst
{
public:
int member0() const { return 10; }
int member1(int in) const { return in; }
typedef int result_type;
int operator()() const { return 10; }
int operator()(int in) const { return in; }
};
void tst_QtConcurrentRun::returnValue()
{
QFuture<int> f;
f = run(returnInt0);
QCOMPARE(f.result(), 10);
A a;
f = run(&a, &A::member0);
QCOMPARE(f.result(), 10);
f = run(&a, &A::member1, 20);
QCOMPARE(f.result(), 20);
f = run(a, &A::member0);
QCOMPARE(f.result(), 10);
f = run(a, &A::member1, 20);
QCOMPARE(f.result(), 20);
f = run(a);
QCOMPARE(f.result(), 10);
f = run(&a);
QCOMPARE(f.result(), 10);
f = run(a, 20);
QCOMPARE(f.result(), 20);
f = run(&a, 20);
QCOMPARE(f.result(), 20);
const AConst aConst = AConst();
f = run(&aConst, &AConst::member0);
QCOMPARE(f.result(), 10);
f = run(&aConst, &AConst::member1, 20);
QCOMPARE(f.result(), 20);
f = run(aConst, &AConst::member0);
QCOMPARE(f.result(), 10);
f = run(aConst, &AConst::member1, 20);
QCOMPARE(f.result(), 20);
f = run(aConst);
QCOMPARE(f.result(), 10);
f = run(&aConst);
QCOMPARE(f.result(), 10);
f = run(aConst, 20);
QCOMPARE(f.result(), 20);
f = run(&aConst, 20);
QCOMPARE(f.result(), 20);
}
struct TestClass
{
void foo() { }
typedef void result_type;
void operator()() { }
void operator()(int) { }
void fooInt(int){ };
};
struct TestConstClass
{
void foo() const { }
typedef void result_type;
void operator()() const { }
void operator()(int) const { }
void fooInt(int) const { };
};
void tst_QtConcurrentRun::functionObject()
{
QFuture<void> f;
TestClass c;
f = run(c);
f = run(&c);
f = run(c, 10);
f = run(&c, 10);
const TestConstClass cc = TestConstClass();
f = run(cc);
f = run(&cc);
f = run(cc, 10);
f = run(&cc, 10);
}
void tst_QtConcurrentRun::memberFunctions()
{
TestClass c;
run(c, &TestClass::foo).waitForFinished();
run(&c, &TestClass::foo).waitForFinished();
run(c, &TestClass::fooInt, 10).waitForFinished();
run(&c, &TestClass::fooInt, 10).waitForFinished();
const TestConstClass cc = TestConstClass();
run(cc, &TestConstClass::foo).waitForFinished();
run(&cc, &TestConstClass::foo).waitForFinished();
run(cc, &TestConstClass::fooInt, 10).waitForFinished();
run(&cc, &TestConstClass::fooInt, 10).waitForFinished();
}
void doubleFunction(double)
{
}
void stringConstRefFunction(const QString &)
{
}
void stringRefFunction(QString &)
{
}
void stringFunction(QString)
{
}
void stringIntFunction(QString)
{
}
void tst_QtConcurrentRun::implicitConvertibleTypes()
{
double d;
run(doubleFunction, d).waitForFinished();
int i;
run(doubleFunction, d).waitForFinished();
run(doubleFunction, i).waitForFinished();
run(doubleFunction, 10).waitForFinished();
run(stringFunction, QLatin1String("Foo")).waitForFinished();
run(stringConstRefFunction, QLatin1String("Foo")).waitForFinished();
QString string;
run(stringRefFunction, string).waitForFinished();
}
void fn() { }
void tst_QtConcurrentRun::runWaitLoop()
{
for (int i = 0; i < 1000; ++i)
run(fn).waitForFinished();
}
QAtomicInt count;
void recursiveRun(int level)
{
count.ref();
if (--level > 0) {
QFuture<void> f1 = run(recursiveRun, level);
QFuture<void> f2 = run(recursiveRun, level);
f1.waitForFinished();
f2.waitForFinished();
}
}
int recursiveResult(int level)
{
count.ref();
if (--level > 0) {
QFuture<int> f1 = run(recursiveResult, level);
QFuture<int> f2 = run(recursiveResult, level);
return f1.result() + f2.result();
}
return 1;
}
void tst_QtConcurrentRun::recursive()
{
int levels = 15;
for (int i = 0; i < QThread::idealThreadCount(); ++i) {
count.store(0);
QThreadPool::globalInstance()->setMaxThreadCount(i);
recursiveRun(levels);
QCOMPARE(count.load(), (int)pow(2.0, levels) - 1);
}
for (int i = 0; i < QThread::idealThreadCount(); ++i) {
count.store(0);
QThreadPool::globalInstance()->setMaxThreadCount(i);
recursiveResult(levels);
QCOMPARE(count.load(), (int)pow(2.0, levels) - 1);
}
}
int e;
void vfn0()
{
++e;
}
int fn0()
{
return 1;
}
void vfn1(double)
{
++e;
}
int fn1(int)
{
return 1;
}
void vfn2(double, int *)
{
++e;
}
int fn2(double, int *)
{
return 1;
}
#ifndef QT_NO_EXCEPTIONS
void throwFunction()
{
throw QtConcurrent::Exception();
}
int throwFunctionReturn()
{
throw QtConcurrent::Exception();
return 0;
}
void tst_QtConcurrentRun::exceptions()
{
bool caught = false;
try {
QtConcurrent::run(throwFunction).waitForFinished();
} catch (Exception &) {
caught = true;
}
if (!caught)
QFAIL("did not get exception");
caught = false;
try {
QtConcurrent::run(throwFunctionReturn).waitForFinished();
} catch (Exception &) {
caught = true;
}
if (!caught)
QFAIL("did not get exception");
}
#endif
struct Functor {
int operator()() { return 42; }
double operator()(double a, double b) { return a/b; }
int operator()(int a, int b) { return a/b; }
void operator()(int) { }
void operator()(int, int, int) { }
void operator()(int, int, int, int) { }
void operator()(int, int, int, int, int) { }
void operator()(int, int, int, int, int, int) { }
};
// This tests functor without result_type; decltype need to be supported by the compiler.
void tst_QtConcurrentRun::functor()
{
#ifndef Q_COMPILER_DECLTYPE
QSKIP("Compiler does not support decltype");
#else
Functor f;
{
QFuture<int> fut = QtConcurrent::run(f);
QCOMPARE(fut.result(), 42);
}
{
QFuture<double> fut = QtConcurrent::run(f, 8.5, 1.8);
QCOMPARE(fut.result(), (8.5/1.8));
}
{
QFuture<int> fut = QtConcurrent::run(f, 19, 3);
QCOMPARE(fut.result(), int(19/3));
}
{
QtConcurrent::run(f, 1).waitForFinished();
QtConcurrent::run(f, 1,2).waitForFinished();
QtConcurrent::run(f, 1,2,3).waitForFinished();
QtConcurrent::run(f, 1,2,3,4).waitForFinished();
QtConcurrent::run(f, 1,2,3,4,5).waitForFinished();
}
#endif
}
void tst_QtConcurrentRun::lambda()
{
#ifndef Q_COMPILER_LAMBDA
QSKIP("Compiler does not support lambda");
#else
QCOMPARE(QtConcurrent::run([](){ return 45; }).result(), 45);
QCOMPARE(QtConcurrent::run([](int a){ return a+15; }, 12).result(), 12+15);
QCOMPARE(QtConcurrent::run([](int a, double b){ return a + b; }, 12, 15).result(), double(12+15));
QCOMPARE(QtConcurrent::run([](int a , int, int, int, int b){ return a + b; }, 1, 2, 3, 4, 5).result(), 1 + 5);
#ifdef Q_COMPILER_INITIALIZER_LISTS
{
QString str { "Hello World Foo" };
QFuture<QStringList> f1 = QtConcurrent::run([&](){ return str.split(' '); });
auto r = f1.result();
QCOMPARE(r, QStringList({"Hello", "World", "Foo"}));
}
#endif
#endif
}
QTEST_MAIN(tst_QtConcurrentRun)
#include "tst_qtconcurrentrun.moc"