2011-12-22 16:19:25 +01:00
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/*
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* \brief Log root 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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2017-02-20 13:23:52 +01:00
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* Copyright (C) 2006-2017 Genode Labs GmbH
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2011-12-22 16:19:25 +01:00
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*
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* This file is part of the Genode OS framework, which is distributed
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2017-02-20 13:23:52 +01:00
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* under the terms of the GNU Affero General Public License version 3.
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2011-12-22 16:19:25 +01:00
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*/
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#ifndef _CORE__INCLUDE__LOG_ROOT_H_
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#define _CORE__INCLUDE__LOG_ROOT_H_
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#include <root/component.h>
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#include <util/arg_string.h>
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#include "log_session_component.h"
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namespace Genode {
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class Log_root : public Root_component<Log_session_component>
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{
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protected:
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/**
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* Root component interface
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*/
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2019-02-14 22:39:08 +01:00
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Log_session_component *_create_session(const char *args) override
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2011-12-22 16:19:25 +01:00
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{
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2020-01-29 12:17:40 +01:00
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return new (md_alloc()) Log_session_component(label_from_args(args));
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2011-12-22 16:19:25 +01:00
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}
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public:
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/**
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* Constructor
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*
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* \param session_ep entry point for managing cpu session objects
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* \param md_alloc meta-data allocator to be used by root component
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*/
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base/core: use references instead of pointers
This patch replaces the former prominent use of pointers by references
wherever feasible. This has the following benefits:
* The contract between caller and callee becomes more obvious. When
passing a reference, the contract says that the argument cannot be
a null pointer. The caller is responsible to ensure that. Therefore,
the use of reference eliminates the need to add defensive null-pointer
checks at the callee site, which sometimes merely exist to be on the
safe side. The bottom line is that the code becomes easier to follow.
* Reference members must be initialized via an object initializer,
which promotes a programming style that avoids intermediate object-
construction states. Within core, there are still a few pointers
as member variables left though. E.g., caused by the late association
of 'Platform_thread' objects with their 'Platform_pd' objects.
* If no pointers are present as member variables, we don't need to
manually provide declarations of a private copy constructor and
an assignment operator to avoid -Weffc++ errors "class ... has
pointer data members [-Werror=effc++]".
This patch also changes a few system bindings on NOVA and Fiasco.OC,
e.g., the return value of the global 'cap_map' accessor has become a
reference. Hence, the patch touches a few places outside of core.
Fixes #3135
2019-01-24 22:00:01 +01:00
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Log_root(Rpc_entrypoint &session_ep, Allocator &md_alloc)
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Root_component<Log_session_component>(&session_ep, &md_alloc)
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{ }
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2011-12-22 16:19:25 +01:00
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};
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}
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#endif /* _CORE__INCLUDE__LOG_ROOT_H_ */
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