cfdbccc5c2
This is a redesign of the root and parent interfaces to eliminate blocking RPC calls. - New session representation at the parent (base/session_state.h) - base-internal root proxy mechanism as migration path - Redesign of base/service.h - Removes ancient 'Connection::KEEP_OPEN' feature - Interface change of 'Child', 'Child_policy', 'Slave', 'Slave_policy' - New 'Slave::Connection' - Changed child-construction procedure to be compatible with the non-blocking parent interface and to be easier to use - The child's initial LOG session, its binary ROM session, and the linker ROM session have become part of the child's envirenment. - Session upgrading must now be performed via 'env.upgrade' instead of performing a sole RPC call the parent. To make RAM upgrades easier, the 'Connection' provides a new 'upgrade_ram' method. Issue #2120
59 lines
1.2 KiB
C++
59 lines
1.2 KiB
C++
/*
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* \brief Log text output session interface
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* \author Norman Feske
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* \date 2006-09-15
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*/
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/*
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* Copyright (C) 2006-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _INCLUDE__LOG_SESSION__LOG_SESSION_H_
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#define _INCLUDE__LOG_SESSION__LOG_SESSION_H_
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#include <base/capability.h>
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#include <base/stdint.h>
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#include <base/rpc_args.h>
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#include <session/session.h>
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namespace Genode {
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struct Log_session;
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struct Log_session_client;
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}
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struct Genode::Log_session : Session
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{
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static const char *service_name() { return "LOG"; }
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typedef Log_session_client Client;
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virtual ~Log_session() { }
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/* the lowest platform-specific maximum IPC payload size (OKL4) */
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enum { MAX_STRING_LEN = 236};
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typedef Rpc_in_buffer<MAX_STRING_LEN> String;
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/**
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* Output null-terminated string
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*
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* \return number of written characters
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*/
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virtual size_t write(String const &string) = 0;
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/*********************
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** RPC declaration **
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*********************/
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GENODE_RPC(Rpc_write, size_t, write, String const &);
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GENODE_RPC_INTERFACE(Rpc_write);
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};
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#endif /* _INCLUDE__LOG_SESSION__LOG_SESSION_H_ */
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