built-in predicate

threaded_engine_self/1

Description

threaded_engine_self(Engine)

Queries the name of engine calling the predicate. Fails if not called from within an engine or if the argument doesn’t unify with the engine name.

Note

This predicate requires a backend Prolog compiler providing compatible multi-threading primitives. The value of the read-only engines flag is set to supported when that is the case.

Modes and number of proofs

threaded_engine_self(?nonvar) - zero_or_one

Errors

(none)

Examples

% find the name of the engine making the query:
..., threaded_engine_self(Engine), ...

% check if the the engine making the query is worker_1:
..., threaded_engine_self(worker_1), ...

See also

threaded_engine_create/3, threaded_engine_destroy/1, threaded_engine/1