std::jthread::swap
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std::jthread
Member functions
Observers
Operations
jthread::swap
Stop token handling
Non-member functions
void swap( std::jthread & other ) noexcept;
(since C++20)
Exchanges the underlying handles of two jthread objects.
Contents
[edit] Parameters
other
-
the jthread to swap with
[edit] Return value
(none)
[edit] Example
Run this code
#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::jthread t1(foo); std::jthread 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'; }
Possible output:
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