Either it is shared across threads, or it is per-thread: decide.
Reading the source code, I see a thread_local identifier, so that's
that. But that does not yet preclude that a program may pass around
the pointer returned from the function among its own threads.
Do a best effort at saying so.
Issues fixed:
* missing words required by grammar
* duplicated or extraneous words
* inappropriate forms (e.g. singular/plural), and declinations
* orthographic misspellings
Jan Engelhardt
Zbigniew Jędrzejewski-Szmek
Tom Gundersen