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593e971121
This patch removes the blocking Block::Session::sync RPC function and adds the asynchronous operations SYNC and TRIM to the block session's packet-stream interface. Even though the patch adjusts all block components to the interface change, the components keep the former blocking handling of sync internally for now because of the design of the 'Block::Driver' interface. This old interface is not worth changing. We should instead migrate the block servers step by step to the new 'Block::Request_stream' API. Fixes #3274
72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
/*
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* \brief Client-side block session interface
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* \author Stefan Kalkowski
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* \date 2010-07-06
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*/
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/*
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* Copyright (C) 2010-2017 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__BLOCK_SESSION__CLIENT_H_
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#define _INCLUDE__BLOCK_SESSION__CLIENT_H_
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#include <base/rpc_client.h>
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#include <block_session/capability.h>
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#include <packet_stream_tx/client.h>
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namespace Block { class Session_client; }
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class Block::Session_client : public Genode::Rpc_client<Session>
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{
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private:
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Packet_stream_tx::Client<Tx> _tx;
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Info const _info = info();
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public:
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/**
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* Constructor
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*
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* \param session session capability
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* \param tx_buffer_alloc allocator used for managing the
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* transmission buffer
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*/
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Session_client(Session_capability session,
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Genode::Range_allocator &tx_buffer_alloc,
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Genode::Region_map &rm)
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:
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Genode::Rpc_client<Session>(session),
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_tx(tx_cap(), rm, tx_buffer_alloc)
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{ }
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/*****************************
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** Block session interface **
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*****************************/
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Info info() const override { return call<Rpc_info>(); }
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Tx *tx_channel() override { return &_tx; }
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Tx::Source *tx() override { return _tx.source(); }
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Genode::Capability<Tx> tx_cap() override { return call<Rpc_tx_cap>(); }
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/**
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* Allocate packet respecting the server's alignment constraints
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*/
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Packet_descriptor alloc_packet(Genode::size_t size)
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{
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return tx()->alloc_packet(size, _info.align_log2);
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}
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};
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#endif /* _INCLUDE__BLOCK_SESSION__CLIENT_H_ */
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