std::thread::get_id
From cppreference.com
std::thread::id get_id() const noexcept; |
(since C++11) | |
Returns a value of std::thread::id identifying the thread associated with *this.
Parameters
(none)
Return value
A value of type std::thread::id identifying the thread associated with *this. If there is no thread associated, default constructed std::thread::id is returned.
Example
Run this code
#include <chrono>
#include <iostream>
#include <thread>
void foo()
{
std::this_thread::sleep_for(std::chrono::seconds(1));
}
int main()
{
std::thread t1(foo);
std::thread::id t1_id = t1.get_id();
std::thread t2(foo);
std::thread::id t2_id = t2.get_id();
std::cout << "t1's id: " << t1_id << '\n';
std::cout << "t2's id: " << t2_id << '\n';
t1.join();
t2.join();
std::cout << "t1's id after join: " << t1.get_id() << '\n';
std::cout << "t2's id after join: " << t2.get_id() << '\n';
}
Possible output:
t1's id: 140146221688576
t2's id: 140146213295872
t1's id after join: thread::id of a non-executing thread
t2's id after join: thread::id of a non-executing thread
See also
| represents the id of a thread (public member class) | |
| checks whether the thread is joinable, i.e. potentially running in parallel context (public member function) |