92 lines
2.2 KiB
C++
92 lines
2.2 KiB
C++
/*
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* \brief Terminal session component
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* \author Christian Prochaska
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* \date 2012-05-16
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*/
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/*
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* Copyright (C) 2012-2013 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 _TERMINAL_SESSION_COMPONENT_H_
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#define _TERMINAL_SESSION_COMPONENT_H_
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/* Genode includes */
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#include <base/rpc_server.h>
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#include <os/attached_ram_dataspace.h>
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#include <os/ring_buffer.h>
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#include <terminal_session/terminal_session.h>
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namespace Terminal {
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using namespace Genode;
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enum { STACK_SIZE = sizeof(addr_t)*1024 };
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enum { BUFFER_SIZE = 4096 };
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class Session_component : public Rpc_object<Terminal::Session,
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Session_component>
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{
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private:
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Session_component &_partner;
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Rpc_entrypoint _ep;
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Genode::Session_capability _session_cap;
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Attached_ram_dataspace _io_buffer;
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typedef Genode::Ring_buffer<unsigned char, BUFFER_SIZE+1> Local_buffer;
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Local_buffer _buffer;
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size_t _cross_num_bytes_avail;
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Lock _write_avail_lock;
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Signal_context_capability _read_avail_sigh;
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public:
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/**
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* Constructor
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*/
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Session_component(Session_component &partner, Cap_session &cap_session, const char *ep_name);
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Session_capability cap();
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/**
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* Return true if capability belongs to session object
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*/
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bool belongs_to(Genode::Session_capability cap);
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/* to be called by the partner component */
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bool cross_avail();
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size_t cross_read(unsigned char *buf, size_t dst_len);
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void cross_write();
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/********************************
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** Terminal session interface **
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********************************/
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Size size();
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bool avail();
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Genode::size_t _read(Genode::size_t dst_len);
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void _write(Genode::size_t num_bytes);
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Genode::Dataspace_capability _dataspace();
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void connected_sigh(Genode::Signal_context_capability sigh);
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void read_avail_sigh(Genode::Signal_context_capability sigh);
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Genode::size_t read(void *, Genode::size_t);
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Genode::size_t write(void const *, Genode::size_t);
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};
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}
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#endif /* _TERMINAL_SESSION_COMPONENT_H_ */
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