NAME

std::this_thread::get_id - std::this_thread::get_id

Synopsis

Defined in header <thread>
std::thread::id get_id() noexcept; (since C++11)

Returns the id of the current thread.

Parameters

(none)

Return value

id of the current thread

Example

// Run this code

#include <iostream>
#include <thread>
#include <chrono>
#include <mutex>

std::mutex g_display_mutex;

void foo()
{
std::thread::id this_id = std::this_thread::get_id();

g_display_mutex.lock();
std::cout << "thread " << this_id << " sleeping...\n";
g_display_mutex.unlock();

std::this_thread::sleep_for(std::chrono::seconds(1));
}

int main()
{
std::thread t1(foo);
std::thread t2(foo);

t1.join();
t2.join();
}

Possible output:

thread 0x2384b312 sleeping...
thread 0x228a10fc sleeping...

See also

get_id returns the id of the thread
(public member function of std::thread)