如何在C++中使用boost创建线程池,如何将任务分配给线程池?
最佳答案
这个过程非常简单。首先创建一个asio::io_service和一个thread_group。用链接到io_service的线程填充thread_group。使用boost::bind函数将任务分配给线程。
要停止线程(通常是在退出程序时),只需停止io_service并加入所有线程即可。
您只需要这些标题:
#include <boost/asio/io_service.hpp>
#include <boost/bind.hpp>
#include <boost/thread/thread.hpp>
这是一个例子:
/*
* Create an asio::io_service and a thread_group (through pool in essence)
*/
boost::asio::io_service ioService;
boost::thread_group threadpool;
/*
* This will start the ioService processing loop. All tasks
* assigned with ioService.post() will start executing.
*/
boost::asio::io_service::work work(ioService);
/*
* This will add 2 threads to the thread pool. (You could just put it in a for loop)
*/
threadpool.create_thread(
boost::bind(&boost::asio::io_service::run, &ioService)
);
threadpool.create_thread(
boost::bind(&boost::asio::io_service::run, &ioService)
);
/*
* This will assign tasks to the thread pool.
* More about boost::bind: "http://www.boost.org/doc/libs/1_54_0/libs/bind/bind.html#with_functions"
*/
ioService.post(boost::bind(myTask, "Hello World!"));
ioService.post(boost::bind(clearCache, "./cache"));
ioService.post(boost::bind(getSocialUpdates, "twitter,gmail,facebook,tumblr,reddit"));
/*
* This will stop the ioService processing loop. Any tasks
* you add behind this point will not execute.
*/
ioService.stop();
/*
* Will wait till all the threads in the thread pool are finished with
* their assigned tasks and 'join' them. Just assume the threads inside
* the threadpool will be destroyed by this method.
*/
threadpool.join_all();
资料来源:Recipes < Asio
关于c++ - 如何在C++中使用boost创建线程池?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/19500404/