5ed5fddb7c
This commit removes APIs that were previously marked as deprecated. This change has the following implications: - The use of the global 'env()' accessor is not possible anymore. - Boolean accessor methods are no longer prefixed with 'is_'. E.g., instead of 'is_valid()', use 'valid()'. - The last traces of 'Ram_session' are gone now. The 'Env::ram()' accessor returns the 'Ram_allocator' interface, which is a subset of the 'Pd_session' interface. - All connection constructors need the 'Env' as argument. - The 'Reporter' constructor needs an 'Env' argument now because the reporter creates a report connection. - The old overload 'Child_policy::resolve_session_request' that returned a 'Service' does not exist anymore. - The base/printf.h header has been removed, use base/log.h instead. - The old notion of 'Signal_dispatcher' is gone. Use 'Signal_handler'. - Transitional headers like os/server.h, cap_session/, volatile_object.h, os/attached*_dataspace.h, signal_rpc_dispatcher.h have been removed. - The distinction between 'Thread_state' and 'Thread_state_base' does not exist anymore. - The header cpu_thread/capability.h along with the type definition of 'Cpu_thread_capability' has been removed. Use the type 'Thread_capability' define in cpu_session/cpu_session.h instead. - Several XML utilities (i.e., at os/include/decorator) could be removed because their functionality is nowadays covered by util/xml_node.h. - The 'os/ram_session_guard.h' has been removed. Use 'Constrained_ram_allocator' provided by base/ram_allocator.h instead. Issue #1987
110 lines
2.5 KiB
C++
110 lines
2.5 KiB
C++
/*
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* \brief Utility to attach a dataspace to the local address space
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* \author Norman Feske
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* \date 2014-01-10
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*/
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/*
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* Copyright (C) 2014-2017 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 Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__BASE__ATTACHED_DATASPACE_H_
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#define _INCLUDE__BASE__ATTACHED_DATASPACE_H_
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#include <dataspace/client.h>
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#include <base/env.h>
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namespace Genode { class Attached_dataspace; }
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class Genode::Attached_dataspace : Noncopyable
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{
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public:
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typedef Region_map::Invalid_dataspace Invalid_dataspace;
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private:
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Dataspace_capability _ds;
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Region_map &_rm;
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size_t const _size = { Dataspace_client(_ds).size() };
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void * _local_addr = nullptr;
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Dataspace_capability _check(Dataspace_capability ds)
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{
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if (ds.valid())
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return ds;
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throw Region_map::Invalid_dataspace();
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}
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/*
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* Noncopyable
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*/
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Attached_dataspace(Attached_dataspace const &);
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Attached_dataspace &operator = (Attached_dataspace const &);
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public:
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/**
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* Constructor
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*
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* \throw Region_map::Region_conflict
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* \throw Region_map::Invalid_dataspace
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* \throw Out_of_caps
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* \throw Out_of_ram
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*/
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Attached_dataspace(Region_map &rm, Dataspace_capability ds)
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: _ds(_check(ds)), _rm(rm), _local_addr(_rm.attach(_ds)) { }
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/**
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* Destructor
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*/
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~Attached_dataspace()
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{
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if (_local_addr)
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_rm.detach(_local_addr);
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}
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/**
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* Return capability of the used dataspace
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*/
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Dataspace_capability cap() const { return _ds; }
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/**
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* Request local address
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*
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* This is a template to avoid inconvenient casts at the caller.
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* A newly attached dataspace is untyped memory anyway.
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*/
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template <typename T>
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T *local_addr() { return static_cast<T *>(_local_addr); }
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template <typename T>
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T const *local_addr() const { return static_cast<T const *>(_local_addr); }
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/**
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* Return size
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*/
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size_t size() const { return _size; }
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/**
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* Forget dataspace, thereby skipping the detachment on destruction
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*
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* This method can be called if the the dataspace is known to be
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* physically destroyed, e.g., because the session where the dataspace
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* originated from was closed. In this case, core will already have
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* removed the memory mappings of the dataspace. So we have to omit the
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* detach operation in '~Attached_dataspace'.
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*/
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void invalidate() { _local_addr = nullptr; }
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};
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#endif /* _INCLUDE__BASE__ATTACHED_DATASPACE_H_ */
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