使用线程,遇到了一个问题,release模式正常,但debug模式崩溃,报如下错误:
ASSERT failure in QCoreApplication::sendEvent: "Cannot send events to objects owned by a different thread. Current thread 171107d8. Receiver '' (of type 'xxx') was created in thread 1709e0c0", file kernel\qcoreapplication.cpp, line 541
Invalid parameter passed to C runtime function.
Invalid parameter passed to C runtime function.
线程使用的方法如下:
Worker* worker = new Worker(this);
connect(worker,SIGNAL(finished(QStringList)),this,SLOT(slotFinished(QStringList)),Qt::QueuedConnection);
QThreadPool::globalInstance()->start(worker);
其中worker继承自QRunnable,用来获取磁盘文件列表。
从代码来看,并非是线程中更新UI造成的。
经过咨询,是两个线程公用一个对象造成的,即跨线程使用对象。最终发现是work本身跨线程使用了,即worker初始化时父对象不能传this.