Question

我正在尝试创建一个TNonblockingServer并使用registerEvents方法注册用户创建的事件库。 registerEvents方法抛出一个使程序崩溃的断言。我正在粘贴服务器代码。

    int main(int ac, char **av)
{
    try 
    {
        boost::shared_ptr<AdderHandler> handler(new AdderHandler());
        boost::shared_ptr<TProcessor> processor(new AdderProcessor(handler));
        boost::shared_ptr<TProtocolFactory> protocolFactory(new TBinaryProtocolFactory());
        TNonblockingServer server(processor, protocolFactory, 9090);

        //create a foreign event loop 
        event_base *eb = event_base_new();
        struct event * es = evsignal_new(eb, SIGTERM, &sigtermHandler, eb);
        evsignal_add(es, NULL);

        //tell thrift to use it.
        server.registerEvents(eb);

        //Finally called serve
        server.serve();
    }
    catch(TTransportException &ex)
    {
        std::cerr<<"server exited with exception:"<<ex.what();
        return -1;
    }
    return 0;
}

错误消息：

Thrift: Wed Dec 10 23:12:47 2014 TNonblockingServer: Serving on port 9090, 1 io threads.
Thrift: Wed Dec 10 23:12:47 2014 TNonblockingServer: using libevent 2.0.21-stable method epoll
Thrift: Wed Dec 10 23:12:47 2014 TNonblocking: IO thread #0 registered for listen.
Thrift: Wed Dec 10 23:12:47 2014 TNonblocking: IO thread #0 registered for notify.
server: src/thrift/server/TNonblockingServer.cpp:1199: void apache::thrift::server::TNonblockingServer::registerEvents(event_base*): Assertion `ioThreads_.empty()' failed.
Aborted (core dumped)

Answer 1

这是TNonblockingServer中的一个错误，serve（）方法在开始时为使用事件库注册一个NULL。注释掉TNonblockingServer.cpp：1257这一行，解决了这个问题。但我不太清楚我搞砸了什么。

TNonblockingServer在添加用户创建的事件库时抛出断言

1 个答案: