# GatewayType¶

[req.gateway_type]

A type T satisfies the GatewayType if it meets the following requirements:

GatewayType Requirements: Pseudo-Signature, Semantics

bool T::try_put(const Output &v)

Requirements: The type Output must be the same as template type argument Output of the corresponding async_node instance.

Broadcasts v to all successors of the corresponding async_node instance.

void T::reserve_wait()

Notifies a flow graph that work has been submitted to an external activity.

void T::release_wait()

Notifies a flow graph that work submitted to an external activity has completed.