114 lines
2.5 KiB
C++
114 lines
2.5 KiB
C++
/*
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* \brief Server that aggregates reports and exposes them as ROM modules
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* \author Norman Feske
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* \date 2014-01-11
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*/
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/*
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* Copyright (C) 2014 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 _REPORT_SERVICE_H_
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#define _REPORT_SERVICE_H_
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/* Genode includes */
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#include <util/arg_string.h>
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#include <report_session/report_session.h>
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#include <root/component.h>
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/* local includes */
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#include <rom_registry.h>
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namespace Report {
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struct Session_component;
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struct Root;
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}
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struct Report::Session_component : Genode::Rpc_object<Session>, Rom::Writer
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{
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private:
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Rom::Registry_for_writer &_registry;
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Genode::Attached_ram_dataspace _ds;
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Rom::Module &_module;
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public:
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Session_component(Rom::Module::Name const &name, size_t buffer_size,
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Rom::Registry_for_writer ®istry)
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:
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_registry(registry),
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_ds(Genode::env()->ram_session(), buffer_size),
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_module(_registry.lookup(*this, name))
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{ }
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/**
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* Destructor
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*
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* Clear report when the report session gets closes.
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*/
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~Session_component()
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{
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_module.write_content(0, 0);
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_registry.release(*this, _module);
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}
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Dataspace_capability dataspace() override { return _ds.cap(); }
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void submit(size_t const length) override
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{
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_module.write_content(_ds.local_addr<char>(),
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Genode::min(length, _ds.size()));
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}
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void response_sigh(Genode::Signal_context_capability) override { }
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size_t obtain_response() override { return 0; }
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};
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struct Report::Root : Genode::Root_component<Session_component>
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{
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private:
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Rom::Registry_for_writer &_rom_registry;
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protected:
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Session_component *_create_session(const char *args) override
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{
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using namespace Genode;
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/* read label from session arguments */
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char label[200];
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Arg_string::find_arg(args, "label").string(label, sizeof(label), "");
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/* read report buffer size from session arguments */
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size_t const buffer_size =
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Arg_string::find_arg(args, "buffer_size").ulong_value(0);
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return new (md_alloc())
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Session_component(Rom::Module::Name(label), buffer_size,
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_rom_registry);
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}
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public:
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Root(Server::Entrypoint &ep,
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Genode::Allocator &md_alloc,
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Rom::Registry_for_writer &rom_registry)
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:
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Genode::Root_component<Session_component>(&ep.rpc_ep(), &md_alloc),
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_rom_registry(rom_registry)
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{ }
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};
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#endif /* _REPORT_SERVICE_H_ */
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