std::this_thread::get_id
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Concurrency support library 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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get_id
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Defined in header 
 
 
<thread> 
 std::thread::id get_id() noexcept;
 
 (since C++11) 
Returns the id of the current thread.
Contents
[edit] Parameters
(none)
[edit] Return value
id of the current thread.
[edit] Example
Run this code
#include <chrono> #include <iostream> #include <syncstream> #include <thread> using namespace std::chrono_literals; void foo() { std::thread::id this_id = std::this_thread::get_id(); std::osyncstream (std::cout ) << "thread " << this_id << " sleeping...\n"; std::this_thread::sleep_for (500ms); } int main() { std::jthread t1{foo}; std::jthread t2{foo}; }
Possible output:
thread 140113018054400 sleeping... thread 140113009661696 sleeping...
[edit] See also
C documentation  for thrd_current