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.. rst-class:: align-right

built-in predicate

.. index:: pair: threaded_engine_post/2; Built-in predicate .. _predicates_threaded_engine_post_2:

threaded_engine_post/2

Description

::

threaded_engine_post(Engine, Term)

Posts a term to the engine term queue.

.. note::

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

Modes and number of proofs

::

threaded_engine_post(@nonvar, @term) - one

Errors

| Engine is a variable: | instantiation_error | Engine is neither a variable nor the name of an existing engine: | existence_error(engine, Engine)

Examples

::

% post the atom "ready" to the worker_1 engine queue: | ?- threaded_engine_post(worker_1, ready).

.. seealso::

:ref:predicates_threaded_engine_fetch_1