Convert uses of QTime as a timer to QElapsedTimer

Change-Id: I2297f61efa5adf9ea5194c7f3ff68574cbcf452c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
 
 
 
 

25 files changed, 103 insertions, 87 deletions

diff --git a/tests/auto/concurrent/qtconcurrentthreadengine/tst_qtconcurrentthreadengine.cpp b/tests/auto/concurrent/qtconcurrentthreadengine/tst_qtconcurrentthreadengine.cpp
index a68f7d5a4e..6305e08b6a 100644
--- a/tests/auto/concurrent/qtconcurrentthreadengine/tst_qtconcurrentthreadengine.cpp
+++ b/tests/auto/concurrent/qtconcurrentthreadengine/tst_qtconcurrentthreadengine.cpp
@@ -28,6 +28,7 @@
 #include <qtconcurrentthreadengine.h>
 #include <qexception.h>
 #include <QThread>
+#include <QElapsedTimer>
 #include <QtTest/QtTest>
 
 using namespace QtConcurrent;
@@ -382,7 +383,7 @@ void tst_QtConcurrentThreadEngine::cancelQueuedSlowUser()
 {
     const int times = 100;
 
-    QTime t;
+    QElapsedTimer t;
     t.start();
 
     {
diff --git a/tests/auto/corelib/io/qprocess/tst_qprocess.cpp b/tests/auto/corelib/io/qprocess/tst_qprocess.cpp
index c51994c1c1..e4ff3c2a08 100644
--- a/tests/auto/corelib/io/qprocess/tst_qprocess.cpp
+++ b/tests/auto/corelib/io/qprocess/tst_qprocess.cpp
@@ -32,6 +32,7 @@
 #include <QtTest/QtTest>
 #include <QtCore/QProcess>
 #include <QtCore/QDir>
+#include <QtCore/QElapsedTimer>
 #include <QtCore/QFile>
 #include <QtCore/QThread>
 #include <QtCore/QTemporaryDir>
@@ -420,7 +421,7 @@ void tst_QProcess::echoTest()
 
     process.write(input);
 
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     stopWatch.start();
     do {
         QVERIFY(process.isOpen());
@@ -479,7 +480,7 @@ void tst_QProcess::echoTest2()
     QVERIFY(spy1.isValid());
     QVERIFY(spy2.isValid());
 
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     stopWatch.start();
     forever {
         QTestEventLoop::instance().enterLoop(1);
@@ -2072,7 +2073,7 @@ void tst_QProcess::fileWriterProcess()
         stdinStr += line;
     }
 
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     stopWatch.start();
     const QString fileName = m_temporaryDir.path() + QLatin1String("/fileWriterProcess.txt");
     const QString binary = QDir::currentPath() + QLatin1String("/fileWriterProcess/fileWriterProcess");
diff --git a/tests/auto/corelib/kernel/qsharedmemory/tst_qsharedmemory.cpp b/tests/auto/corelib/kernel/qsharedmemory/tst_qsharedmemory.cpp
index 55deb8eb1a..fa2d5e3723 100644
--- a/tests/auto/corelib/kernel/qsharedmemory/tst_qsharedmemory.cpp
+++ b/tests/auto/corelib/kernel/qsharedmemory/tst_qsharedmemory.cpp
@@ -34,6 +34,7 @@
 #include <QSharedMemory>
 #include <QTest>
 #include <QThread>
+#include <QElapsedTimer>
 
 #define EXISTING_SHARE "existing"
 #define EXISTING_SIZE 1024
@@ -645,7 +646,7 @@ public:
 
         char *memory = (char*)producer.data();
         memory[1] = '0';
-        QTime timer;
+        QElapsedTimer timer;
         timer.start();
         int i = 0;
         while (i < 5 && timer.elapsed() < 5000) {
diff --git a/tests/auto/corelib/kernel/qtimer/tst_qtimer.cpp b/tests/auto/corelib/kernel/qtimer/tst_qtimer.cpp
index b7c87418c7..262dbea913 100644
--- a/tests/auto/corelib/kernel/qtimer/tst_qtimer.cpp
+++ b/tests/auto/corelib/kernel/qtimer/tst_qtimer.cpp
@@ -38,6 +38,7 @@
 
 #include <qtimer.h>
 #include <qthread.h>
+#include <qelapsedtimer.h>
 
 #if defined Q_OS_UNIX
 #include <unistd.h>
@@ -526,7 +527,7 @@ public:
     QBasicTimer m_timer;
 
     int m_interval;
-    QTime m_startedTime;
+    QElapsedTimer m_elapsedTimer;
     QEventLoop eventLoop;
 
     inline RestartedTimerFiresTooSoonObject()
@@ -538,7 +539,7 @@ public:
         static int interval = 1000;
 
         m_interval = interval;
-        m_startedTime.start();
+        m_elapsedTimer.start();
         m_timer.start(interval, this);
 
         // alternate between single-shot and 1 sec
@@ -552,7 +553,7 @@ public:
 
         m_timer.stop();
 
-        int elapsed = m_startedTime.elapsed();
+        int elapsed = m_elapsedTimer.elapsed();
 
         if (elapsed < m_interval / 2) {
             // severely too early!
@@ -590,10 +591,10 @@ public:
 public slots:
     void longLastingSlot()
     {
-        // Don't use timers for this, because we are testing them.
-        QTime time;
-        time.start();
-        while (time.elapsed() < 200) {
+        // Don't use QTimer for this, because we are testing it.
+        QElapsedTimer control;
+        control.start();
+        while (control.elapsed() < 200) {
             for (int c = 0; c < 100000; c++) {} // Mindless looping.
         }
         if (++count >= 2) {
diff --git a/tests/auto/corelib/serialization/qtextstream/tst_qtextstream.cpp b/tests/auto/corelib/serialization/qtextstream/tst_qtextstream.cpp
index c4fb623130..32306e8003 100644
--- a/tests/auto/corelib/serialization/qtextstream/tst_qtextstream.cpp
+++ b/tests/auto/corelib/serialization/qtextstream/tst_qtextstream.cpp
@@ -35,6 +35,7 @@
 #include <QBuffer>
 #include <QByteArray>
 #include <QDebug>
+#include <QElapsedTimer>
 #include <QFile>
 #include <QTcpSocket>
 #include <QTemporaryDir>
@@ -996,7 +997,7 @@ struct CompareIndicesForArray
 void tst_QTextStream::performance()
 {
     // Phase #1 - test speed of reading a huge text file with QFile.
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
 
     const int N = 3;
     const char * readMethods[N] = {
diff --git a/tests/auto/corelib/thread/qatomicint/tst_qatomicint.cpp b/tests/auto/corelib/thread/qatomicint/tst_qatomicint.cpp
index cc197cabba..9b5a273131 100644
--- a/tests/auto/corelib/thread/qatomicint/tst_qatomicint.cpp
+++ b/tests/auto/corelib/thread/qatomicint/tst_qatomicint.cpp
@@ -31,6 +31,7 @@
 
 #include <QAtomicInt>
 #include <QCoreApplication>
+#include <QElapsedTimer>
 
 #include <limits.h>
 
@@ -851,7 +852,7 @@ void tst_QAtomicInt::operators()
 
 void tst_QAtomicInt::testAndSet_loop()
 {
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     stopWatch.start();
 
     int iterations = 10000000;
diff --git a/tests/auto/corelib/thread/qfuturewatcher/tst_qfuturewatcher.cpp b/tests/auto/corelib/thread/qfuturewatcher/tst_qfuturewatcher.cpp
index b2ef516b4e..a322a1c11d 100644
--- a/tests/auto/corelib/thread/qfuturewatcher/tst_qfuturewatcher.cpp
+++ b/tests/auto/corelib/thread/qfuturewatcher/tst_qfuturewatcher.cpp
@@ -27,6 +27,7 @@
 ****************************************************************************/
 #include <QCoreApplication>
 #include <QDebug>
+#include <QElapsedTimer>
 #include <QtTest/QtTest>
 
 #include <QtConcurrent>
@@ -878,7 +879,7 @@ void tst_QFutureWatcher::incrementalFilterResults()
 void tst_QFutureWatcher::qfutureSynchronizer()
 {
     int taskCount = 1000;
-    QTime t;
+    QElapsedTimer t;
     t.start();
 
     {
diff --git a/tests/auto/corelib/thread/qreadwritelock/tst_qreadwritelock.cpp b/tests/auto/corelib/thread/qreadwritelock/tst_qreadwritelock.cpp
index 8e97229752..45fcf9657d 100644
--- a/tests/auto/corelib/thread/qreadwritelock/tst_qreadwritelock.cpp
+++ b/tests/auto/corelib/thread/qreadwritelock/tst_qreadwritelock.cpp
@@ -29,6 +29,7 @@
 #include <QtTest/QtTest>
 #include <qcoreapplication.h>
 #include <qreadwritelock.h>
+#include <qelapsedtimer.h>
 #include <qmutex.h>
 #include <qthread.h>
 #include <qwaitcondition.h>
@@ -237,7 +238,7 @@ void tst_QReadWriteLock::tryReadLock()
                 testsTurn.release();
 
                 threadsTurn.acquire();
-                QTime timer;
+                QElapsedTimer timer;
                 timer.start();
                 QVERIFY(!readWriteLock.tryLockForRead(1000));
                 QVERIFY(timer.elapsed() >= 1000);
@@ -500,7 +501,7 @@ public:
     int holdTime;
     int waitTime;
     bool print;
-    QTime t;
+    QElapsedTimer t;
     inline ReadLockLoopThread(QReadWriteLock &l, int runTime, int holdTime=0, int waitTime=0, bool print=false)
     :testRwlock(l)
     ,runTime(runTime)
@@ -536,7 +537,7 @@ public:
     int holdTime;
     int waitTime;
     bool print;
-    QTime t;
+    QElapsedTimer t;
     inline WriteLockLoopThread(QReadWriteLock &l, int runTime, int holdTime=0, int waitTime=0, bool print=false)
     :testRwlock(l)
     ,runTime(runTime)
@@ -574,7 +575,7 @@ public:
     int runTime;
     int waitTime;
     int maxval;
-    QTime t;
+    QElapsedTimer t;
     inline WriteLockCountThread(QReadWriteLock &l, int runTime, int waitTime, int maxval)
     :testRwlock(l)
     ,runTime(runTime)
@@ -615,7 +616,7 @@ public:
     QReadWriteLock &testRwlock;
     int runTime;
     int waitTime;
-    QTime t;
+    QElapsedTimer t;
     inline ReadLockCountThread(QReadWriteLock &l, int runTime, int waitTime)
     :testRwlock(l)
     ,runTime(runTime)
@@ -873,7 +874,7 @@ void tst_QReadWriteLock::deleteOnUnlock()
 
     DeleteOnUnlockThread thread2(&lock, &startup, &waitMutex);
 
-    QTime t;
+    QElapsedTimer t;
     t.start();
     while(t.elapsed() < 4000) {
         lock = new QReadWriteLock();
@@ -899,7 +900,7 @@ void tst_QReadWriteLock::uncontendedLocks()
     uint count=0;
     int millisecs=1000;
     {
-        QTime t;
+        QElapsedTimer t;
         t.start();
         while(t.elapsed() <millisecs)
         {
@@ -908,7 +909,7 @@ void tst_QReadWriteLock::uncontendedLocks()
     }
     {
         QReadWriteLock rwlock;
-        QTime t;
+        QElapsedTimer t;
         t.start();
         while(t.elapsed() <millisecs)
         {
@@ -919,7 +920,7 @@ void tst_QReadWriteLock::uncontendedLocks()
     }
     {
         QReadWriteLock rwlock;
-        QTime t;
+        QElapsedTimer t;
         t.start();
         while(t.elapsed() <millisecs)
         {
diff --git a/tests/auto/corelib/thread/qthread/tst_qthread.cpp b/tests/auto/corelib/thread/qthread/tst_qthread.cpp
index f72b662c94..19922b1ea5 100644
--- a/tests/auto/corelib/thread/qthread/tst_qthread.cpp
+++ b/tests/auto/corelib/thread/qthread/tst_qthread.cpp
@@ -29,7 +29,7 @@
 #include <QtTest/QtTest>
 
 #include <qcoreapplication.h>
-#include <qdatetime.h>
+#include <qelapsedtimer.h>
 #include <qmutex.h>
 #include <qthread.h>
 #include <qtimer.h>
@@ -244,8 +244,8 @@ public:
         QMutexLocker locker(&mutex);
 
         elapsed = 0;
-        QTime time;
-        time.start();
+        QElapsedTimer timer;
+        timer.start();
         switch (sleepType) {
         case Second:
             sleep(interval);
@@ -257,7 +257,7 @@ public:
             usleep(interval);
             break;
         }
-        elapsed = time.elapsed();
+        elapsed = timer.elapsed();
 
         cond.wakeOne();
     }
@@ -601,8 +601,7 @@ void tst_QThread::msleep()
     thread.interval = 120;
     thread.start();
     QVERIFY(thread.wait(five_minutes));
-#if defined (Q_OS_WIN)
-    // Since the resolution of QTime is so coarse...
+#if defined (Q_OS_WIN) // May no longer be needed
     QVERIFY(thread.elapsed >= 100);
 #else
     QVERIFY(thread.elapsed >= 120);
@@ -616,8 +615,7 @@ void tst_QThread::usleep()
     thread.interval = 120000;
     thread.start();
     QVERIFY(thread.wait(five_minutes));
-#if defined (Q_OS_WIN)
-    // Since the resolution of QTime is so coarse...
+#if defined (Q_OS_WIN) // May no longer be needed
     QVERIFY(thread.elapsed >= 100);
 #else
     QVERIFY(thread.elapsed >= 120);
@@ -948,9 +946,9 @@ void tst_QThread::stressTest()
     if (EmulationDetector::isRunningArmOnX86())
         QSKIP("Qemu uses too much memory for each thread. Test would run out of memory.");
 
-    QTime t;
-    t.start();
-    while (t.elapsed() < one_minute) {
+    QElapsedTimer timer;
+    timer.start();
+    while (timer.elapsed() < one_minute) {
         Current_Thread t;
         t.start();
         t.wait(one_minute);
diff --git a/tests/auto/corelib/thread/qthreadpool/tst_qthreadpool.cpp b/tests/auto/corelib/thread/qthreadpool/tst_qthreadpool.cpp
index 27b49602fc..f41cbe2601 100644
--- a/tests/auto/corelib/thread/qthreadpool/tst_qthreadpool.cpp
+++ b/tests/auto/corelib/thread/qthreadpool/tst_qthreadpool.cpp
@@ -27,7 +27,7 @@
 **
 ****************************************************************************/
 #include <QtTest/QtTest>
-#include <qdatetime.h>
+#include <qelapsedtimer.h>
 #include <qthreadpool.h>
 #include <qstring.h>
 #include <qmutex.h>
@@ -882,7 +882,7 @@ void tst_QThreadPool::priorityStart()
 
 void tst_QThreadPool::waitForDone()
 {
-    QTime total, pass;
+    QElapsedTimer total, pass;
     total.start();
 
     QThreadPool threadPool;
@@ -1113,7 +1113,7 @@ void tst_QThreadPool::tryTake()
 
 void tst_QThreadPool::destroyingWaitsForTasksToFinish()
 {
-    QTime total, pass;
+    QElapsedTimer total, pass;
     total.start();
 
     while (total.elapsed() < 10000) {
@@ -1204,7 +1204,7 @@ void tst_QThreadPool::stressTest()
         }
     };
 
-    QTime total;
+    QElapsedTimer total;
     total.start();
     while (total.elapsed() < 30000) {
         Task t;
diff --git a/tests/auto/network/access/qftp/tst_qftp.cpp b/tests/auto/network/access/qftp/tst_qftp.cpp
index e07588d6c6..63de0083f0 100644
--- a/tests/auto/network/access/qftp/tst_qftp.cpp
+++ b/tests/auto/network/access/qftp/tst_qftp.cpp
@@ -43,6 +43,7 @@
 #include <QtNetwork/private/qnetworksession_p.h>
 #include <QTcpServer>
 #include <QHostInfo>
+#include <QElapsedTimer>
 #include <QTcpSocket>
 
 #include "../../../network-settings.h"
@@ -2160,7 +2161,7 @@ void tst_QFtp::qtbug7359Crash()
     QFtp ftp;
     ftp.connectToHost("127.0.0.1");
 
-    QTime t;
+    QElapsedTimer t;
     int elapsed;
 
     t.start();
diff --git a/tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp b/tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp
index 8867e4dbaa..e85147095c 100644
--- a/tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp
+++ b/tests/auto/network/access/qnetworkreply/tst_qnetworkreply.cpp
@@ -32,6 +32,7 @@
 #include <QtCore/QDataStream>
 #include <QtCore/QUrl>
 #include <QtCore/QEventLoop>
+#include <QtCore/QElapsedTimer>
 #include <QtCore/QFile>
 #include <QtCore/QRandomGenerator>
 #include <QtCore/QRegularExpression>
@@ -1149,7 +1150,7 @@ protected:
         }
 
         // now write in "blocking mode", this is where the rate measuring starts
-        QTime timer;
+        QElapsedTimer timer;
         timer.start();
         //const qint64 writtenBefore = dataIndex;
         //qint64 measuredTotalBytes = wantedSize - writtenBefore;
@@ -1248,7 +1249,7 @@ protected:
         }
 
         qint64 bytesRead = 0;
-        QTime stopWatch;
+        QElapsedTimer stopWatch;
         stopWatch.start();
         do {
             if (device->bytesAvailable() == 0) {
@@ -5153,8 +5154,8 @@ void tst_QNetworkReply::ioGetFromBuiltinHttp()
     const int rate = 200; // in kB per sec
     RateControlledReader reader(server, reply.data(), rate, bufferSize);
 
-    QTime loopTime;
-    loopTime.start();
+    QElapsedTimer loopTimer;
+    loopTimer.start();
 
     const int result = waitForFinish(reply);
     if (notEnoughDataForFastSender) {
@@ -5164,7 +5165,7 @@ void tst_QNetworkReply::ioGetFromBuiltinHttp()
 
     QVERIFY2(result == Success, msgWaitForFinished(reply));
 
-    const int elapsedTime = loopTime.elapsed();
+    const int elapsedTime = loopTimer.elapsed();
     server.wait();
     reader.wrapUp();
 
@@ -5450,12 +5451,12 @@ void tst_QNetworkReply::rateControl()
     RateControlledReader reader(sender, reply.data(), rate, 20);
 
     // this test is designed to run for 25 seconds at most
-    QTime loopTime;
-    loopTime.start();
+    QElapsedTimer loopTimer;
+    loopTimer.start();
 
     QVERIFY2(waitForFinish(reply) == Success, msgWaitForFinished(reply));
 
-    int elapsedTime = loopTime.elapsed();
+    int elapsedTime = loopTimer.elapsed();
 
     if (!errorSpy.isEmpty()) {
         qDebug() << "ERROR!" << errorSpy[0][0] << reply->errorString();
@@ -6125,8 +6126,8 @@ void tst_QNetworkReply::httpConnectionCount()
     }
 
     int pendingConnectionCount = 0;
-    QTime time;
-    time.start();
+    QElapsedTimer timer;
+    timer.start();
 
     while(pendingConnectionCount <= 20) {
         QTestEventLoop::instance().enterLoop(1);
@@ -6138,7 +6139,7 @@ void tst_QNetworkReply::httpConnectionCount()
         }
 
         // at max. wait 10 sec
-        if (time.elapsed() > 10000)
+        if (timer.elapsed() > 10000)
             break;
     }
 
diff --git a/tests/auto/network/socket/platformsocketengine/tst_platformsocketengine.cpp b/tests/auto/network/socket/platformsocketengine/tst_platformsocketengine.cpp
index 01168cc0d6..ffc63ee46a 100644
--- a/tests/auto/network/socket/platformsocketengine/tst_platformsocketengine.cpp
+++ b/tests/auto/network/socket/platformsocketengine/tst_platformsocketengine.cpp
@@ -32,7 +32,7 @@
 #include <qcoreapplication.h>
 #include <qdatastream.h>
 #include <qhostaddress.h>
-#include <qdatetime.h>
+#include <qelapsedtimer.h>
 
 #ifdef Q_OS_UNIX
 #include <unistd.h>
@@ -403,7 +403,7 @@ void tst_PlatformSocketEngine::udpLoopbackPerformance()
     QHostAddress localhost = QHostAddress::LocalHost;
 
     qlonglong readBytes = 0;
-    QTime timer;
+    QElapsedTimer timer;
     timer.start();
     while (timer.elapsed() < 5000) {
         udpSocket2.write(message1.data(), message1.size());
@@ -462,7 +462,7 @@ void tst_PlatformSocketEngine::tcpLoopbackPerformance()
     QByteArray message1(messageSize, '@');
     QByteArray answer(messageSize, '@');
 
-    QTime timer;
+    QElapsedTimer timer;
     timer.start();
     qlonglong readBytes = 0;
     while (timer.elapsed() < 5000) {
diff --git a/tests/auto/network/socket/qhttpsocketengine/tst_qhttpsocketengine.cpp b/tests/auto/network/socket/qhttpsocketengine/tst_qhttpsocketengine.cpp
index cdc6fef663..64241014d7 100644
--- a/tests/auto/network/socket/qhttpsocketengine/tst_qhttpsocketengine.cpp
+++ b/tests/auto/network/socket/qhttpsocketengine/tst_qhttpsocketengine.cpp
@@ -38,6 +38,7 @@
 #include <qhostaddress.h>
 #include <qtcpsocket.h>
 #include <qdebug.h>
+#include <qelapsedtimer.h>
 #include <qtcpserver.h>
 
 #include "../../../network-settings.h"
@@ -397,7 +398,7 @@ void tst_QHttpSocketEngine::tcpLoopbackPerformance()
     QByteArray message1(messageSize, '@');
     QByteArray answer(messageSize, '@');
 
-    QTime timer;
+    QElapsedTimer timer;
     timer.start();
     qlonglong readBytes = 0;
     while (timer.elapsed() < 30000) {
@@ -629,7 +630,7 @@ void tst_QHttpSocketEngine::downloadBigFile()
 
     bytesAvailable = 0;
 
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     stopWatch.start();
 
     QTestEventLoop::instance().enterLoop(60);
diff --git a/tests/auto/network/socket/qlocalsocket/tst_qlocalsocket.cpp b/tests/auto/network/socket/qlocalsocket/tst_qlocalsocket.cpp
index f53c75c6a4..732f7eef00 100644
--- a/tests/auto/network/socket/qlocalsocket/tst_qlocalsocket.cpp
+++ b/tests/auto/network/socket/qlocalsocket/tst_qlocalsocket.cpp
@@ -32,6 +32,7 @@
 
 #include <qtextstream.h>
 #include <qdatastream.h>
+#include <qelapsedtimer.h>
 #include <QtNetwork/qlocalsocket.h>
 #include <QtNetwork/qlocalserver.h>
 
@@ -1031,7 +1032,7 @@ void tst_QLocalSocket::waitForDisconnect()
     QLocalSocket *serverSocket = server.nextPendingConnection();
     QVERIFY(serverSocket);
     socket.disconnectFromServer();
-    QTime timer;
+    QElapsedTimer timer;
     timer.start();
     QVERIFY(serverSocket->waitForDisconnected(3000));
     QVERIFY(timer.elapsed() < 2000);
diff --git a/tests/auto/network/socket/qtcpsocket/tst_qtcpsocket.cpp b/tests/auto/network/socket/qtcpsocket/tst_qtcpsocket.cpp
index abe9845213..c500c6b3c3 100644
--- a/tests/auto/network/socket/qtcpsocket/tst_qtcpsocket.cpp
+++ b/tests/auto/network/socket/qtcpsocket/tst_qtcpsocket.cpp
@@ -66,7 +66,7 @@
 #endif
 #include <QTextStream>
 #include <QThread>
-#include <QTime>
+#include <QElapsedTimer>
 #include <QTimer>
 #include <QDebug>
 // RVCT compiles also unused inline methods
@@ -237,7 +237,6 @@ private:
     qint64 bytesAvailable;
     qint64 expectedLength;
     bool readingBody;
-    QTime timer;
 
     QByteArray expectedReplyIMAP_cached;
 
@@ -1518,7 +1517,7 @@ void tst_QTcpSocket::downloadBigFile()
     expectedLength = 0;
     readingBody = false;
 
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     stopWatch.start();
 
     enterLoop(600);
@@ -2482,7 +2481,7 @@ void tst_QTcpSocket::suddenRemoteDisconnect()
     QEventLoop loop;
     connect(&serverProcess, SIGNAL(finished(int)), &loop, SLOT(quit()));
     connect(&clientProcess, SIGNAL(finished(int)), &loop, SLOT(quit()));
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     stopWatch.start();
     QTimer::singleShot(20000, &loop, SLOT(quit()));
 
@@ -2522,7 +2521,7 @@ void tst_QTcpSocket::connectToMultiIP()
     // rationale: this domain resolves to 3 A-records, 2 of them are
     // invalid. QTcpSocket should never spend more than 30 seconds per IP, and
     // 30s*2 = 60s.
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     stopWatch.start();
     socket->connectToHost("multi.dev.qt-project.org", 80);
     QVERIFY(socket->waitForConnected(60500));
@@ -2714,7 +2713,7 @@ void tst_QTcpSocket::taskQtBug5799ConnectionErrorWaitForConnected()
 
     QTcpSocket socket;
     socket.connectToHost(QtNetworkSettings::httpServerName(), 12346);
-    QTime timer;
+    QElapsedTimer timer;
     timer.start();
     socket.waitForConnected(10000);
     QVERIFY2(timer.elapsed() < 9900, "Connection to closed port timed out instead of refusing, something is wrong");
diff --git a/tests/auto/network/socket/qudpsocket/tst_qudpsocket.cpp b/tests/auto/network/socket/qudpsocket/tst_qudpsocket.cpp
index a4b22cb000..0f419e9de4 100644
--- a/tests/auto/network/socket/qudpsocket/tst_qudpsocket.cpp
+++ b/tests/auto/network/socket/qudpsocket/tst_qudpsocket.cpp
@@ -40,6 +40,7 @@
 #include <qhostinfo.h>
 #include <qtcpsocket.h>
 #include <qmap.h>
+#include <qelapsedtimer.h>
 #include <qnetworkdatagram.h>
 #include <QNetworkProxy>
 #include <QNetworkInterface>
@@ -922,7 +923,7 @@ void tst_QUdpSocket::performance()
     client.connectToHost(serverAddress, server.localPort());
     QVERIFY(client.waitForConnected(10000));
 
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
     stopWatch.start();
 
     qint64 nbytes = 0;
diff --git a/tests/auto/network/ssl/qsslsocket/tst_qsslsocket.cpp b/tests/auto/network/ssl/qsslsocket/tst_qsslsocket.cpp
index 7912063bc8..491f52a66b 100644
--- a/tests/auto/network/ssl/qsslsocket/tst_qsslsocket.cpp
+++ b/tests/auto/network/ssl/qsslsocket/tst_qsslsocket.cpp
@@ -29,6 +29,7 @@
 
 #include <QtCore/qglobal.h>
 #include <QtCore/qthread.h>
+#include <QtCore/qelapsedtimer.h>
 #include <QtNetwork/qhostaddress.h>
 #include <QtNetwork/qhostinfo.h>
 #include <QtNetwork/qnetworkproxy.h>
@@ -1989,7 +1990,7 @@ public slots:
         QTestEventLoop::instance().exitLoop();
     }
     void waitSomeMore(QSslSocket *socket) {
-        QTime t;
+        QElapsedTimer t;
         t.start();
         while (!socket->encryptedBytesAvailable()) {
             QCoreApplication::processEvents(QEventLoop::AllEvents | QEventLoop::WaitForMoreEvents, 250);
diff --git a/tests/auto/opengl/qglthreads/tst_qglthreads.cpp b/tests/auto/opengl/qglthreads/tst_qglthreads.cpp
index b7b5b505a0..8a38d0f517 100644
--- a/tests/auto/opengl/qglthreads/tst_qglthreads.cpp
+++ b/tests/auto/opengl/qglthreads/tst_qglthreads.cpp
@@ -33,6 +33,7 @@
 #include <qpa/qplatformintegration.h>
 #include <QtWidgets/QApplication>
 #include <QtOpenGL/QtOpenGL>
+#include <qelapsedtimer.h>
 #include "tst_qglthreads.h"
 
 #ifndef QT_OPENGL_ES_2
@@ -74,9 +75,9 @@ public:
     }
 
     void run() {
-        QTime time;
-        time.start();
-        while (time.elapsed() < RUNNING_TIME) {
+        QElapsedTimer timer;
+        timer.start();
+        while (timer.elapsed() < RUNNING_TIME) {
             lock();
             waitForReadyToSwap();
 
@@ -291,11 +292,11 @@ public:
     }
 
     void run() {
-        QTime time;
-        time.start();
+        QElapsedTimer timer;
+        timer.start();
         failure = false;
 
-        while (time.elapsed() < RUNNING_TIME && !failure) {
+        while (timer.elapsed() < RUNNING_TIME && !failure) {
 
             m_widget->makeCurrent();
 
@@ -466,13 +467,13 @@ public:
 public slots:
     void draw() {
         bool beginFailed = false;
-        QTime time;
-        time.start();
+        QElapsedTimer timer;
+        timer.start();
         int rotAngle = 10;
         device->prepareDevice();
         QPaintDevice *paintDevice = device->realPaintDevice();
         QSize s(paintDevice->width(), paintDevice->height());
-        while (time.elapsed() < RUNNING_TIME) {
+        while (timer.elapsed() < RUNNING_TIME) {
             QPainter p;
             if (!p.begin(paintDevice)) {
                 beginFailed = true;
diff --git a/tests/auto/other/networkselftest/tst_networkselftest.cpp b/tests/auto/other/networkselftest/tst_networkselftest.cpp
index dc353d2090..1b125d8825 100644
--- a/tests/auto/other/networkselftest/tst_networkselftest.cpp
+++ b/tests/auto/other/networkselftest/tst_networkselftest.cpp
@@ -29,6 +29,7 @@
 #include <QtTest/QtTest>
 #include <QtNetwork/QtNetwork>
 #include <QtCore/QDateTime>
+#include <QtCore/QElapsedTimer>
 #include <QtCore/QTextStream>
 #include <QtCore/QRandomGenerator>
 #include <QtCore/QStandardPaths>
@@ -195,7 +196,7 @@ static bool doSocketFlush(QTcpSocket *socket, int timeout = 4000)
 #ifndef QT_NO_SSL
     QSslSocket *sslSocket = qobject_cast<QSslSocket *>(socket);
 #endif
-    QTime timer;
+    QElapsedTimer timer;
     timer.start();
     int t = timeout;
     forever {
@@ -421,7 +422,7 @@ void tst_NetworkSelfTest::serverReachability()
     QTcpSocket socket;
     socket.connectToHost(QtNetworkSettings::serverName(), 12346);
 
-    QTime timer;
+    QElapsedTimer timer;
     timer.start();
     socket.waitForConnected(10000);
     QVERIFY2(timer.elapsed() < 9900, "Connection to closed port timed out instead of refusing, something is wrong");
diff --git a/tests/auto/other/qobjectrace/tst_qobjectrace.cpp b/tests/auto/other/qobjectrace/tst_qobjectrace.cpp
index 22782f6b09..473b377b85 100644
--- a/tests/auto/other/qobjectrace/tst_qobjectrace.cpp
+++ b/tests/auto/other/qobjectrace/tst_qobjectrace.cpp
@@ -85,7 +85,7 @@ class RaceThread : public QThread
 {
     Q_OBJECT
     RaceObject *object;
-    QTime stopWatch;
+    QElapsedTimer stopWatch;
 
 public:
     RaceThread()
diff --git a/tests/auto/sql/models/qsqltablemodel/tst_qsqltablemodel.cpp b/tests/auto/sql/models/qsqltablemodel/tst_qsqltablemodel.cpp
index b617151a36..44dd4a74cf 100644
--- a/tests/auto/sql/models/qsqltablemodel/tst_qsqltablemodel.cpp
+++ b/tests/auto/sql/models/qsqltablemodel/tst_qsqltablemodel.cpp
@@ -32,6 +32,7 @@
 #include <QtSql>
 #include <QtSql/private/qsqltablemodel_p.h>
 #include <QThread>
+#include <QElapsedTimer>
 
 const QString test(qTableName("test", __FILE__, QSqlDatabase())),
                    test2(qTableName("test2", __FILE__, QSqlDatabase())),
@@ -1804,12 +1805,12 @@ void tst_QSqlTableModel::sqlite_bigTable()
     QSqlQuery q(db);
     QVERIFY_SQL( q, exec("create table "+bigtable+"(id int primary key, name varchar)"));
     QVERIFY_SQL( q, prepare("insert into "+bigtable+"(id, name) values (?, ?)"));
-    QTime startTime;
-    startTime.start();
+    QElapsedTimer timing;
+    timing.start();
     for (int i = 0; i < 10000; ++i) {
         q.addBindValue(i);
         q.addBindValue(QString::number(i));
-        if(i%1000 == 0 && startTime.elapsed() > 5000)
+        if (i % 1000 == 0 && timing.elapsed() > 5000)
             qDebug() << i << "records written";
         QVERIFY_SQL( q, exec());
     }
diff --git a/tests/auto/testlib/selftests/sleep/tst_sleep.cpp b/tests/auto/testlib/selftests/sleep/tst_sleep.cpp
index b7b141afd0..95cb68521d 100644
--- a/tests/auto/testlib/selftests/sleep/tst_sleep.cpp
+++ b/tests/auto/testlib/selftests/sleep/tst_sleep.cpp
@@ -28,6 +28,7 @@
 
 
 #include <QtCore/QCoreApplication>
+#include <QtCore/QElapsedTimer>
 #include <QtTest/QtTest>
 
 class tst_Sleep: public QObject
@@ -41,7 +42,7 @@ private slots:
 
 void tst_Sleep::sleep()
 {
-    QTime t;
+    QElapsedTimer t;
     t.start();
 
     QTest::qSleep(100);
diff --git a/tests/auto/widgets/widgets/qabstractslider/tst_qabstractslider.cpp b/tests/auto/widgets/widgets/qabstractslider/tst_qabstractslider.cpp
index 1a0d7a9289..d8fbb8e041 100644
--- a/tests/auto/widgets/widgets/qabstractslider/tst_qabstractslider.cpp
+++ b/tests/auto/widgets/widgets/qabstractslider/tst_qabstractslider.cpp
@@ -33,7 +33,7 @@
 #include <QSlider>
 #include <QStyle>
 #include <QStyleOption>
-#include <QTime>
+#include <QElapsedTimer>
 #include <QDebug>
 
 #include <QtTest/private/qtesthelpers_p.h>
@@ -91,7 +91,7 @@ private slots:
     void connectedSliders();
 
 private:
-    void waitUntilTimeElapsed(const QTime& t, int ms);
+    void waitUntilTimeElapsed(const QElapsedTimer &t, int ms);
 
     QWidget *topLevel;
     Slider *slider;
@@ -2053,11 +2053,11 @@ void tst_QAbstractSlider::setValue()
         QVERIFY(sliderMovedTimeStamp < valueChangedTimeStamp);
 }
 
-void tst_QAbstractSlider::waitUntilTimeElapsed(const QTime& t, int ms)
+void tst_QAbstractSlider::waitUntilTimeElapsed(const QElapsedTimer &t, int ms)
 {
     const int eps = 80;
     while (t.elapsed() < ms + eps)
-        QTest::qWait(qMax(ms - t.elapsed() + eps, 25));
+        QTest::qWait(qMax(int(ms - t.elapsed() + eps), 25));
 }
 
 void tst_QAbstractSlider::setRepeatAction()
@@ -2073,7 +2073,7 @@ void tst_QAbstractSlider::setRepeatAction()
     QCOMPARE(spy.count(), 0);
     QCOMPARE(slider->value(), 55);
 
-    QTime t;
+    QElapsedTimer t;
     t.start();
     QTest::qWait(300);
     QCOMPARE(spy.count(), 0);
diff --git a/tests/auto/xml/sax/qxmlinputsource/tst_qxmlinputsource.cpp b/tests/auto/xml/sax/qxmlinputsource/tst_qxmlinputsource.cpp
index 752e39c23f..d40c8c2fd6 100644
--- a/tests/auto/xml/sax/qxmlinputsource/tst_qxmlinputsource.cpp
+++ b/tests/auto/xml/sax/qxmlinputsource/tst_qxmlinputsource.cpp
@@ -34,6 +34,7 @@
 #include <QTcpServer>
 #include <QTcpSocket>
 #include <QTimer>
+#include <QElapsedTimer>
 #include <QtDebug>
 #include <QtTest/QtTest>
 #include <QXmlDefaultHandler>
@@ -259,7 +260,7 @@ public:
         // Delibrately wait a maximum of 10 seconds for the sake
         // of the test, so it doesn't unduly hang
         const int waitTime = qMax(10000, msecs);
-        QTime t;
+        QElapsedTimer t;
         t.start();
         while (t.elapsed() < waitTime) {
             QCoreApplication::processEvents();