加入全局变量:std::vector<std::thread> th_pool; main.cpp: #include<iostream>#include<thread>#include<string>#include<vector>voidcompute(intnIters){for(intiter=0;iter<nIters;++iter){std::cout<<" iter = "<<iter+1<<" nIters = "<<nIters<<std::endl;std::this_thread::sleep_for(std...
required from 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::thread; _Alloc = std::allocator<std::thread>; std::vector<_Tp, _Alloc>::value_type = std::thread]' main.cpp:37:30: required from here /usr/local/include/c++/5.1.0/ext/new_allocator...
push_back(std::thread(func)); // Create 3 differet thread objects std::thread th1(func); std::thread th2(func); std::thread th3(func); // Move all three thread objects to vector vecOfThreads.push_back(std::move(th1)); vecOfThreads.push_back(std::move(th2)); vecOfThreads....
std::vector<std::thread> threads;for(inti=1; i<=10; ++i) threads.push_back(std::thread(increase_global,1000));//分开写: thread t()// thread.push_back(t) 就无法编译通过,因为要用到operator= ,而 thread只允许move semnantics,就是只允许右值引用类似的 对于c++11里的foreach ,可以解释为 ...
求助,std::ve..如题,编译器为mingw,未使用cmake,其他都好好的,补充:vs2022中可运行,如果gcc实在不行,如何在vscode中设置与vs2022一样的环境(编译选项)呢
三种std::vector并发安全的设计思路 vector的并发读写问题 众所周知,C++标准库中的vector不保证线程安全。当我们在并发读写vector时,往往会面临两方面的风险: 内容读取异常:例如两个线程一个在读,一个在写,或者两个线程同时在写,都会导致单个数据内部出现不一致的情况。
std::cout << "Hello "+_str << std::endl; } }; int main(const int argc, const char **argv) { std::string str = "there"; Test t1/*, t2*/; std::vector<std::thread> vec_thr; std::thread thr1(&Test::testme, std::move(t1), std::cref(str)); ...
(mtx);vec.push_back(value);}voidprint_vector(){std::lock_guard<std::mutex>lock(mtx);for(auto&v:vec){std::cout<<v<<" ";}std::cout<<std::endl;}intmain(){std::threadt1(push_back,1);std::threadt2(push_back,2);std::threadt3(print_vector);t1.join();t2.join();t3.join()...
避免使用跨线程的全局变量:尽量避免在多线程环境中使用跨线程的全局 std::vector 变量。相反,可以考虑将 std::vector 作为函数参数传递,或者使用线程局部存储(例如 thread_local 关键字)来为每个线程创建单独的 std::vector 实例。 使用线程池:如果你需要在多线程环境中使用 std::vector,可以考虑使用线程池来限制并...
();return buffer;}void deallocate(char *buffer) {std::unique_lock<std::mutex> lock(mtx);memory_pool.push_back(buffer);cv.notify_one();}};// 线程池任务队列std::queue<int> task_queue;std::mutex queue_mtx;std::condition_variable queue_cv;// 线程处理函数void thread_handler(MemoryPool ...