QT线程同步

// 1线程同步
QFutureSynchronizer<void> synchronizer;

 //2线程1

synchronizer.addFuture(QtConcurrent::run([=]() {
download(url);
}));

 //3线程2

synchronizer.addFuture(QtConcurrent::run([=]() {
download(webpicurl);
}));

//4等待下载完成

 synchronizer.waitForFinished();

//5ToSomeThing

二、qfuture和qfuturewatch