Ubuntu下C++多线程编程技巧

?Ubuntu???C++?????,?????C++11???? ????????????????????:

1. ?????

??,??????????????:

#include 
#include 

2. ????

?? std::thread ??????????,?????????????:

void print_hello() {
    std::cout << "Hello from thread!" << std::endl;
}

int main() {
    std::thread t(print_hello);  // ??????? print_hello ??
    t.join();  // ??????
    return 0;
}

3. ???????

?Ubuntu???C++??????,??????C++11?????????,???pthread????,??g++???:

g++ -std=c++11 -pthread -o my_program my_program.cpp

4. ?? join() ? detach()

• join():???????
• detach():???????,??????????

std::thread t1(print_hello);  // ??????? print_hello ??
t1.join();  // ???? t1 ??

// ?? detach
std::thread t2(print_hello);  // ??????? print_hello ??
t2.detach();  // ?? t2 ?????

5. ????

??????????????????????????????(std::mutex)?????(std::condition_variable)?????????

??:???????????

#include 
#include 
#include 

std::mutex mtx;  // ???

void print_message(const std::string& message) {
    std::lock_guard lock(mtx);  // ???????????
    std::cout << message << std::endl;
}

int main() {
    std::thread t1(print_message, "Thread 1");
    std::thread t2(print_message, "Thread 2");
    t1.join();
    t2.join();
    return 0;
}

6. ???????

????????????,?????????,?bees???????????????????,?????????????

7. ????

• ??????:??????????,???????????????
• ??????:?????(?GDB)???????????,????????????
• ??????:????????????????,?Valgrind?Helgrind?,?????????????????

???????????,????Ubuntu??????C++??????????????????!