axl_bool vortex_payload_feeder_ref ( VortexPayloadFeeder feeder)

Allows to increase the reference counting associated to the payload feeder.

A reference account acquired can be released by using vortex_payload_feeder_unref.

feederThe feeder to increase its reference counting.
axl_true in the case reference counting was updated, otherwise axl_false is returned.

References vortex_mutex_lock(), and vortex_mutex_unlock().

Referenced by vortex_payload_feeder_is_finished().