NAME¶

std::unique_lock::swap - std::unique_lock::swap

Synopsis¶

void swap( unique_lock& other ) noexcept; (since C++11)

Exchanges the internal states of the lock objects.

Parameters¶

other - the lock to swap the state with

Return value¶

(none)

Example¶

// Run this code

#include <iostream>
#include <mutex>

int main()
{
std::mutex mtx1;
std::unique_lock<std::mutex> guard1(mtx1);
std::unique_lock<std::mutex> guard2;
guard2.swap(guard1);

if (!guard1 && guard2)
std::cout << "swapped success\n";

return 0;
}

Output:¶

swapped success

See also¶

std::swap(std::unique_lock) specialization of std::swap for unique_lock
(C++11) (function template)