The isc_tid() function is often called on the hot-path and it's the only function is to return thread_local variable, make the isc_tid() function a header-only to save several function calls during query-response processing.
The isc_tid() function is often called on the hot-path and it's the only function is to return thread_local variable, make the isc_tid() function a header-only to save several function calls during query-response processing.