boost::threadpool 调用类成员变量并传入参数 的方法

时间:2023-03-09 17:46:06
boost::threadpool 调用类成员变量并传入参数 的方法

1. 首先到官网下载

2. 包含头文件
#include "../boost/threadpool.hpp"
3. 声明threadpool对象, 
boost::threadpool::fifo_pool m_poolCmdProcess;
上面声明了一个FIFO线程池, 即先进先出
4. 声明一个Runnable适配类 来包装你的类及成员函数
                class Runnable
                {
                                typedef boost::function<void (/*CCommunicationMap*, */ICommandContextEx*)> function;
                private:
                                function _f;
                                CCommunicationMap* _target;
                                ICommandContextEx* _data;
                public:
                                template<class F>
                                Runnable(CCommunicationMap* target, F f, ICommandContextEx* data)
                                {
                                                _f = f;
                                                _target = target;
                                                _data = data;
                                }
                                ~Runnable(){}
                                void run()
                                {
                                                //_target->TestCommand(_data);
                                                _f(/*_target, */_data);
                                }
                };
上面 function 声明了一个函数模板, 此模板应该和你要关联的类成员函数类型一致。
5. 调用threadpool的schedule方法 启动线程

boost::function<void (/*CCommunicationMap*, */ICommandContextEx*)>     fun;

                                fun =  boost::bind(&CCommunicationMap::TestCommand, &m_communication, _1);
                                Runnable* run = new Runnable(&m_communication,  fun, pContext);
                                 boost::threadpool::schedule(m_poolCmdProcess, boost::shared_ptr<Runnable>(run));
注意: 
threadpool库中的pool_adaptors.hpp头文件有错误, 需要我们改动源码(注释的为原来代码,下面的为改动后的代码), 具体为:
    template<typename Pool, typename Runnable>
    bool schedule(Pool& pool, shared_ptr<Runnable> const & obj)
    {          
                                //return pool->schedule(bind(&Runnable::run, obj));
                                return pool.schedule(bind(&Runnable::run, obj));
    }