mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-27 01:11:06 +00:00
105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
/*
|
|
* \brief Terminal session interface
|
|
* \author Norman Feske
|
|
* \date 2011-08-11
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2011 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__TERMINAL_SESSION__TERMINAL_SESSION_H_
|
|
#define _INCLUDE__TERMINAL_SESSION__TERMINAL_SESSION_H_
|
|
|
|
/* Genode includes */
|
|
#include <session/session.h>
|
|
#include <base/rpc.h>
|
|
#include <dataspace/capability.h>
|
|
|
|
namespace Terminal {
|
|
|
|
struct Session : Genode::Session
|
|
{
|
|
static const char *service_name() { return "Terminal"; }
|
|
|
|
class Size
|
|
{
|
|
private:
|
|
|
|
unsigned _columns, _lines;
|
|
|
|
public:
|
|
|
|
Size() : _columns(0), _lines(0) { }
|
|
|
|
Size(unsigned columns, unsigned lines)
|
|
: _columns(columns), _lines(lines) { }
|
|
|
|
unsigned columns() const { return _columns; }
|
|
unsigned lines() const { return _lines; }
|
|
};
|
|
|
|
/**
|
|
* Return terminal size
|
|
*/
|
|
virtual Size size() = 0;
|
|
|
|
/**
|
|
* Return true of one or more characters are available for reading
|
|
*/
|
|
virtual bool avail() = 0;
|
|
|
|
/**
|
|
* Read characters from terminal
|
|
*/
|
|
virtual Genode::size_t read(void *buf, Genode::size_t buf_size) = 0;
|
|
|
|
/**
|
|
* Write characters to terminal
|
|
*/
|
|
virtual Genode::size_t write(void const *buf, Genode::size_t num_bytes) = 0;
|
|
|
|
/**
|
|
* Register signal handler to be informed about the established connection
|
|
*
|
|
* This function is used for a simple startup protocol of terminal
|
|
* sessions. At session-creation time, the terminal session may not
|
|
* be ready to use. For example, a TCP terminal session needs an
|
|
* established TCP connection first. However, we do not want to let the
|
|
* session-creation block on the server side because this would render
|
|
* the servers entrypoint unavailable for all other clients until the
|
|
* TCP connection is ready. Instead, we deliver a 'connected' signal
|
|
* to the client emitted when the session becomes ready to use. The
|
|
* Terminal::Connection waits for this signal at construction time.
|
|
*/
|
|
virtual void connected_sigh(Genode::Signal_context_capability cap) = 0;
|
|
|
|
/**
|
|
* Register signal handler to be informed about ready-to-read characters
|
|
*/
|
|
virtual void read_avail_sigh(Genode::Signal_context_capability cap) = 0;
|
|
|
|
|
|
/*******************
|
|
** RPC interface **
|
|
*******************/
|
|
|
|
GENODE_RPC(Rpc_size, Size, size);
|
|
GENODE_RPC(Rpc_avail, bool, avail);
|
|
GENODE_RPC(Rpc_read, Genode::size_t, _read, Genode::size_t);
|
|
GENODE_RPC(Rpc_write, void, _write, Genode::size_t);
|
|
GENODE_RPC(Rpc_connected_sigh, void, connected_sigh, Genode::Signal_context_capability);
|
|
GENODE_RPC(Rpc_read_avail_sigh, void, read_avail_sigh, Genode::Signal_context_capability);
|
|
GENODE_RPC(Rpc_dataspace, Genode::Dataspace_capability, _dataspace);
|
|
|
|
GENODE_RPC_INTERFACE(Rpc_size, Rpc_avail, Rpc_read, Rpc_write,
|
|
Rpc_connected_sigh, Rpc_read_avail_sigh,
|
|
Rpc_dataspace);
|
|
};
|
|
}
|
|
|
|
#endif /* _INCLUDE__TERMINAL_SESSION__TERMINAL_SESSION_H_ */
|