C++ High Performance

Threads

A running program contains at least one thread. When your main function is being called, it is executed on a thread usually referred to as the main thread. Each thread has an identifier, which can be useful when debugging a concurrent program. The following program prints the thread identifier of the main thread:

auto main() -> int { 
  std::cout << "Thread ID: " <<  std::this_thread::get_id() << '\n'; 
} 

Running the preceding program might produce something like this:

 Thread ID: 0x1001553c0 

It is possible to make a thread sleep. Sleep is rarely used in production code but can be very useful during debugging. For example, if you have a data race that only occurs under rare circumstances, adding sleep to your code might make it appear ...