77 lines
1.5 KiB
C++
77 lines
1.5 KiB
C++
/*
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* \brief Event tracing infrastructure
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* \author Norman Feske
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* \date 2013-08-09
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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 _INCLUDE__BASE__TRACE__LOGGER_H_
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#define _INCLUDE__BASE__TRACE__LOGGER_H_
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#include <base/trace/buffer.h>
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#include <cpu_session/cpu_session.h>
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namespace Genode { namespace Trace {
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class Control;
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class Policy_module;
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class Logger;
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} }
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/**
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* Facility for logging events to a thread-specific buffer
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*/
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struct Genode::Trace::Logger
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{
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private:
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Thread_capability thread_cap;
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Control *control;
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bool enabled;
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unsigned policy_version;
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Policy_module *policy_module;
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Buffer *buffer;
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size_t max_event_size;
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bool pending_init;
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bool _evaluate_control();
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public:
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Logger();
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bool is_initialized() { return control != 0; }
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bool is_init_pending() { return pending_init; }
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void init_pending(bool val) { pending_init = val; }
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void init(Thread_capability);
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/**
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* Log binary data to trace buffer
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*/
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void log(char const *, size_t);
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/**
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* Log event to trace buffer
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*/
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template <typename EVENT>
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void log(EVENT const *event)
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{
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if (!this || !_evaluate_control()) return;
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buffer->commit(event->generate(*policy_module, buffer->reserve(max_event_size)));
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}
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};
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#endif /* _INCLUDE__BASE__TRACE__LOGGER_H_ */
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