我正在线程中运行阻塞QLocalServer
:
void QThread::stopServer()
{
m_abort = true;
m_server.close(); // QSocketNotifier: Socket notifiers cannot be enabled or disabled from another thread
}
void QThread::run()
{
m_server = new QLocalServer();
m_server->Listen("PipeName");
while (!m_abort)
{
if (m_server->waitForNewConnection())
{
// handle the connection
}
}
delete m_server;
}
如何从另一个线程关闭服务器?还是使用非阻塞事件的唯一方法?
此致
答案 0 :(得分:0)
为什么不等到run()
被设置后m_abort
关闭或删除连接本身?
void QThread::stopServer()
{
m_abort = true; // shall be thread-safe (std::atomic<bool>, etc)
wait(); // It’s optional to use it here
}
void QThread::run()
{
m_server = new QLocalServer();
m_server->Listen("PipeName");
while (!m_abort)
{
if (m_server->waitForNewConnection())
{
/* Most likely you cannot handle the connection
which was closed in another place, therefore сlose (delete)
it after leaving here */
}
}
delete m_server;
}
请注意,您可以使用标准的QThread::requestInterruption和isInterruptionRequested()方法,而不是创建自己的m_abort
变量。
从文档中:
此功能可用于清晰地执行长时间运行的任务 可中断的。切勿检查或处理由此返回的值 功能是安全的,但建议定期进行 运行功能。 请注意不要过于频繁地拨打电话,以保持 开销低。
所以你可以这样写:
void QThread::stopServer()
{
requestInterruption();
wait(); // It’s optional to use it here
}
void QThread::run()
{
m_server = new QLocalServer();
m_server->Listen("PipeName");
while (!isInterruptionRequested())
{
if (m_server->waitForNewConnection(100)) // 100 ms for not to call too often
{
/* Most likely you cannot handle the connection
which was closed in another place, therefore сlose (delete)
it after leaving here */
}
}
delete m_server;
}