使用标准库替代boost中的thread group
转载修改自 秋天的栗树:用std::thread替换实现boost::thread_group
- 使用
unique_ptr替换了其中的auto_ptr(已不受支持)； - 添加了
<functional>和<algorithm>两个头文件；
#include <list>
#include <mutex>
#include <thread>
#include <memory>
#include <algorithm>
#include <functional>
namespace std
{//兼容boost::thread_group//使用std::thread代替boost::thread,std::mutex代替boost::shared_mutexclass thread_group{private:thread_group(thread_group const&);thread_group& operator=(thread_group const&);public:thread_group() {}~thread_group(){for(auto it=threads.begin(),end=threads.end(); it!=end;++it){delete *it;}}template<typename F>thread* create_thread(F threadfunc){lock_guard<mutex> guard(m);unique_ptr<thread> new_thread(new thread(threadfunc));threads.push_back(new_thread.get());return new_thread.release();}void add_thread(thread* thrd){if(thrd){lock_guard<mutex> guard(m);threads.push_back(thrd);}}void remove_thread(thread* thrd){lock_guard<mutex> guard(m);auto it=std::find(threads.begin(),threads.end(),thrd);if(it!=threads.end()){threads.erase(it);}}void join_all(){lock_guard<mutex> guard(m);for(auto it=threads.begin(),end=threads.end();it!=end;++it){(*it)->join();}}size_t size() const{lock_guard<mutex> guard(m);return threads.size();}private:list<thread*> threads;mutable mutex m;};
}
