109 lines
2.7 KiB
C++
109 lines
2.7 KiB
C++
/*
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* \brief TRACE session implementation
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* \author Norman Feske
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* \date 2013-08-12
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*/
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/*
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* Copyright (C) 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 _CORE__INCLUDE__TRACE__SESSION_COMPONENT_H_
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#define _CORE__INCLUDE__TRACE__SESSION_COMPONENT_H_
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/* Genode includes */
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#include <base/allocator_guard.h>
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#include <base/rpc_server.h>
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#include <base/tslab.h>
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#include <trace_session/trace_session.h>
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/* core-local includes */
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#include <trace/subject_registry.h>
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#include <trace/policy_registry.h>
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namespace Genode { namespace Trace { class Session_component; } }
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class Genode::Trace::Session_component
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:
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public Genode::Rpc_object<Genode::Trace::Session,
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Genode::Trace::Session_component>,
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public Genode::Trace::Policy_owner
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{
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private:
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Ram_session &_ram;
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Allocator_guard _md_alloc;
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Tslab<Subject, 4096> _subjects_slab;
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Tslab<Policy, 4096> _policies_slab;
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unsigned _parent_levels;
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Session_label _label;
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Source_registry &_sources;
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Policy_registry &_policies;
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Subject_registry _subjects;
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unsigned _policy_cnt;
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struct Argument_buffer
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{
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Ram_session &ram;
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Ram_dataspace_capability ds;
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char *base;
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size_t size;
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Argument_buffer(Ram_session &ram, size_t size)
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:
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ram(ram),
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ds(ram.alloc(size)),
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base(env()->rm_session()->attach(ds)),
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size(ds.call<Dataspace::Rpc_size>())
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{ }
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~Argument_buffer()
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{
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env()->rm_session()->detach(base);
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ram.free(ds);
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}
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} _argument_buffer;
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public:
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/**
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* Constructor
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*/
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Session_component(Allocator &md_alloc, size_t ram_quota,
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size_t arg_buffer_size, unsigned parent_levels,
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char const *label, Source_registry &sources,
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Policy_registry &policies);
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~Session_component();
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/**
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* Register quota donation at allocator guard
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*/
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void upgrade_ram_quota(size_t ram_quota) { _md_alloc.upgrade(ram_quota); }
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/***********************
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** Session interface **
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***********************/
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Dataspace_capability dataspace();
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size_t subjects();
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Policy_id alloc_policy(size_t);
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Dataspace_capability policy(Policy_id);
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void unload_policy(Policy_id);
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void trace(Subject_id, Policy_id, size_t);
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void rule(Session_label const &, Thread_name const &, Policy_id, size_t);
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void pause(Subject_id);
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void resume(Subject_id);
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Subject_info subject_info(Subject_id);
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Dataspace_capability buffer(Subject_id);
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void free(Subject_id);
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};
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#endif /* _CORE__INCLUDE__TRACE__SESSION_COMPONENT_H_ */
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