genode/repos/os/include/usb_session/connection.h

/**
 * \brief  Client connection to USB server
 * \author Sebastian Sumpf
 * \date   2014-12-08
 */

/*
 * Copyright (C) 2014 Genode Labs GmbH
 *
 * This file is part of the Genode OS framework, which is distributed
 * under the terms of the GNU General Public License version 2.
 */
#ifndef _INCLUDE__USB_SESSION__CONNECTION_H_
#define _INCLUDE__USB_SESSION__CONNECTION_H_

#include <usb_session/client.h>
#include <base/connection.h>
#include <base/allocator.h>

namespace Usb { struct Connection; }


struct Usb::Connection : Genode::Connection<Session>, Session_client
{
	/**
	 * Issue session request
	 *
	 * \noapi
	 */
	Capability<Usb::Session> _session(Genode::Parent &parent,
	                                  char const *label,
	                                  Genode::size_t tx_buf_size)
	{
		return session(parent, "ram_quota=%zd, tx_buf_size=%zd, label=\"%s\"",
		               3 * 4096 + tx_buf_size, tx_buf_size, label);
	}

	/**
	 * Constructor
	 */
	Connection(Genode::Env                       &env,
	           Genode::Range_allocator          *tx_block_alloc,
	           char                       const *label = "",
	           Genode::size_t                    tx_buf_size = 512 * 1024,
	           Genode::Signal_context_capability sigh_state_changed =
	                                     Genode::Signal_context_capability())
	:
		Genode::Connection<Session>(env, _session(env.parent(), label, tx_buf_size)),
		Session_client(cap(), tx_block_alloc, sigh_state_changed)
	{ }

	/**
	 * Constructor
	 *
	 * \noapi
	 * \deprecated  Use the constructor with 'Env &' as first
	 *              argument instead
	 */
	Connection(Genode::Range_allocator *tx_block_alloc,
	           char const *label = "",
	           Genode::size_t tx_buf_size = 512 * 1024,
	           Genode::Signal_context_capability sigh_state_changed =
	               Genode::Signal_context_capability())
	:
		Genode::Connection<Session>(_session(*Genode::env()->parent(), label, tx_buf_size)),
		Session_client(cap(), tx_block_alloc, sigh_state_changed)
	{ }
};

#endif /* _INCLUDE__USB_SESSION__CONNECTION_H_ */