pub fn gettid() -> PidExpand description
Get the caller’s thread ID (see gettid(2).
This function is only available on Linux based systems. In a single threaded process, the main thread will have the same ID as the process. In a multithreaded process, each thread will have a unique thread id but the same process ID.
No error handling is required as a thread id should always exist for any process, even if threads are not being used.