Allows to get the next channel available on the provided pool, providing a pointer that will be passed to the create channel handler.
This function works the same way like vortex_channel_pool_get_next_ready but allows to provide a pointer that is passed to the VortexChannelPoolCreate handler configured at vortex_channel_pool_new_full. In the case you didn't configure a creation channel handler, this function is not useful.
Once the channel was used, you should use vortex_channel_pool_release_channel to return the channel to the pool, making it usable by other invocation. The concept is to release the channel as soon as possible.
See vortex_channel_pool_get_next_ready function for more information.