好的新尝试,
我将我的代码从正常更改vector<Individual>
为vector<shared_ptr<Individual>>
. 从那以后,我的线程代码不起作用,我不知道如何修复它。Start() 是 Individual 的 void 成员,但是如果只有指向它们的指针,我该如何称呼它?
std::vector<thread> threads;
for (int i=0;i<(Individuals.size()-howManyChampions-howManyMutations);i++) {
threads.push_back(thread(&Individual::start,&Individuals.at(i)));
if (threads.size() % 5 == 0) {
for(auto& thread : threads){
thread.join();
}
threads.clear();
}
}
for(auto& thread : threads){
thread.join();
}
当我将它改回向量和非并行版本时,它可以工作:
for (int i=0;i<(int)Individuals.size();i++) {
Individuals.at(i)->start();
}
像魅力一样工作,也是。所以我认为线程 push_back 有问题?错误消息(粗略翻译)是:
instance created from »_Res std::_Mem_fn<_Res (_Class::*)(_ArgTypes ...)>::operator()(_Tp&, _ArgTypes ...) const [mit _Tp = std::shared_ptr<Individual>*, _Res = void, _Class = Individual, _ArgTypes = {}]«|
instance created from »void std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__call(std::tuple<_Args ...>&&, std::_Index_tuple<_Indexes ...>, typename std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__enable_if_void<_Res>::type) [mit _Res = void, _Args = {}, int ..._Indexes = {0}, _Result = void, _Functor = std::_Mem_fn<void (Individual::*)()>, _Bound_args = {std::shared_ptr<Individual>*}, typename std::_Bind_result<_Result, _Functor(_Bound_args ...)>::__enable_if_void<_Res>::type = int]«|
instance created from »std::_Bind_result<_Result, _Functor(_Bound_args ...)>::result_type std::_Bind_result<_Result, _Functor(_Bound_args ...)>::operator()(_Args&& ...) [mit _Args = {}, _Result = void, _Functor = std::_Mem_fn<void (Individual::*)()>, _Bound_args = {std::shared_ptr<Individual>*}, std::_Bind_result<_Result, _Functor(_Bound_args ...)>::result_type = void]«|
instance created from »void std::thread::_Impl<_Callable>::_M_run() [mit _Callable = std::_Bind_result<void, std::_Mem_fn<void (Individual::*)()>(std::shared_ptr<Individual>*)>]«|
instanziiert von hier|
Pointer to element type »void (Individual::)()« with Objecttype »std::shared_ptr<Individual>« incompatible
Return-Command with value in »void« returning Function [-fpermissive]
多谢你们