如何使用boost.thread同时运行由循环创建的多个线程？

Question

我在学习boost.thread的基础知识。到目前为止，我可以手动逐个创建每个线程，让它们同时运行。但是，当通过循环创建时，它将不再按顺序运行。

#include <iostream> 
#include <boost/thread.hpp> 
void workerFunc() 
{ 
    boost::posix_time::seconds workTime(3); 
    std::cout << "Worker: Running" << '\n'; 
    boost::this_thread::sleep(workTime); 
    std::cout<< "Worker: Finished" << '\n'; 
} 

int main() 
{ 
    std::cout << "main: startup" << '\n'; 
    boost::thread workerThread(workerFunc); 
    std::cout << "main: waiting for thread" << '\n'; 
    //these are ok 
    boost::thread t(workerFunc), t2(workerFunc), t3(workerFunc), t4(workerFunc);  
    t.join(); 
    t2.join(); 
    t3.join(); 
    t4.join(); 
    //these are not 
    for (int i = 0; i < 2; ++i) 
    { 
     boost::thread z(workerFunc); 
     z.join(); 
    } 
    std::cout << "main:done" << '\n'; 
    return 0; 
} 

Answer 1

for (int i = 0; i < 2; ++i) 
    { 
     boost::thread z(workerFunc); 
     z.join(); 
    } 

你开始你的线程，然后立即等待它完成！

编辑

除了一个线程组几种可供选择的黑客。

std::vector<boost::thread *> z; 

    for (int i = 0; i < 2; ++i) 
    z.push_back(new boost::thread(workerFunc)); 

    for (int i = 0; i < 2; ++i) 
    { 
     z[i]->join(); 
     delete z[i]; 
    } 

Answer 2

好，我找到了答案通过别人的问题一样，以及学习他们的问题：

How to make boost::thread_group execute a fixed number of parallel threads