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std::thread::get_id

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std::thread::id get_id() const;
(since C++11)

Returns a value of std::thread::id identifying the thread associated with *this.

Contents

[edit] Parameters

(none)

[edit] 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.

[edit] Exceptions

noexcept specification:  
noexcept
  

[edit] Example

#include <iostream>
#include <thread>
#include <chrono>
 
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();
}

Possible output:

t1's id: 0x35a7210f
t2's id: 0x35a311c4

[edit] See also

represents the id of a thread
(public member class) [edit]
checks whether the thread is joinable, i.e. potentially running in parallel context
(public member function) [edit]