genode/repos/base/include/log_session/log_session.h

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/*
* \brief Log text output session interface
* \author Norman Feske
* \date 2006-09-15
*/
/*
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* Copyright (C) 2006-2013 Genode Labs GmbH
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*
* 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__LOG_SESSION__LOG_SESSION_H_
#define _INCLUDE__LOG_SESSION__LOG_SESSION_H_
#include <base/capability.h>
#include <base/stdint.h>
#include <base/rpc_args.h>
#include <session/session.h>
namespace Genode {
struct Log_session;
struct Log_session_client;
}
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struct Genode::Log_session : Session
{
static const char *service_name() { return "LOG"; }
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typedef Log_session_client Client;
virtual ~Log_session() { }
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/* the lowest platform-specific maximum IPC payload size (OKL4) */
enum { MAX_STRING_LEN = 236};
typedef Rpc_in_buffer<MAX_STRING_LEN> String;
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/**
* Output null-terminated string
*
* \return number of written characters
*/
virtual size_t write(String const &string) = 0;
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/*********************
** RPC declaration **
*********************/
GENODE_RPC(Rpc_write, size_t, write, String const &);
GENODE_RPC_INTERFACE(Rpc_write);
};
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#endif /* _INCLUDE__LOG_SESSION__LOG_SESSION_H_ */