carb::this_thread::getId

inline thread::ThreadId carb::this_thread::getId()

Retrieve the thread ID for the current thread.

Note

(Linux) This function returns the thread ID which is different than pthread_self(). This thread ID can be found with syscall(SYS_gettid), but this can be very slow as it is a syscall. To be more performant, Carbonite attempts to read the value from within the opaque pthread_t, but there is no guarantee that GLIBC will keep this value in the same location permanently. If the value cannot be read from pthread_t, it will fall back to using the slower syscall. This value is not stored in a thread_local because older versions of GLIBC (such as 2.17 which is used by Centos7) require a lock that is also required for loading shared libraries, which can cause a deadlock.

Returns: The thread ID for the current thread.