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std::thread:: swap

From cppreference.net

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std::thread
void swap ( std:: thread & other ) noexcept ;
(seit C++11)

Tauscht die zugrundeliegenden Handles zweier Thread-Objekte aus.

Inhaltsverzeichnis

Parameter

other - der Thread, mit dem ausgetauscht werden soll

Rückgabewert

(keine)

Beispiel

Diesen Code ausführen 
#include <chrono>
#include <iostream>
#include <thread>
void foo()
{
    std::this_thread::sleep_for(std::chrono::seconds(1));
}
void bar()
{
    std::this_thread::sleep_for(std::chrono::seconds(1));
}
int main()
{
    std::thread t1(foo);
    std::thread t2(bar);
    std::cout << "thread 1 id: " << t1.get_id() << '\n'
              << "thread 2 id: " << t2.get_id() << '\n';
    std::swap(t1, t2);
    std::cout << "after std::swap(t1, t2):" << '\n'
              << "thread 1 id: " << t1.get_id() << '\n'
              << "thread 2 id: " << t2.get_id() << '\n';
    t1.swap(t2);
    std::cout << "after t1.swap(t2):" << '\n'
              << "thread 1 id: " << t1.get_id() << '\n'
              << "thread 2 id: " << t2.get_id() << '\n';
    t1.join();
    t2.join();
}

Mögliche Ausgabe: 

thread 1 id: 140185268262656
thread 2 id: 140185259869952
after std::swap(t1, t2):
thread 1 id: 140185259869952
thread 2 id: 140185268262656
after t1.swap(t2):
thread 1 id: 140185268262656
thread 2 id: 140185259869952

Siehe auch

(C++11)
spezialisiert den std::swap Algorithmus
(Funktion)