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std::unique_lock<Mutex>::swap

From cppreference.com
< cpp‎ | thread‎ | unique lock
 
 
Concurrency support library
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void swap( unique_lock& other ) noexcept;
(since C++11)

Exchanges the internal states of the lock objects.

[edit] Parameters

other - the lock to swap the state with

[edit] Return value

(none)

[edit] 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

[edit] See also

specializes the std::swap algorithm
(function template) [edit]
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