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# std::this_thread::get_id

From cppreference.com
< cpp‎ | thread

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

Returns the id of the current thread.

### [edit] Parameters

(none)

### [edit] Return value

id of the current thread

### [edit] 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...

### [edit] See also

get_id | returns the id of the thread (public member function of `std::thread`) [edit]

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