104 lines
2.3 KiB
C++
104 lines
2.3 KiB
C++
/*
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* \brief Monitoring of a trace subject
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* \author Martin Stein
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* \date 2018-01-12
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*/
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/*
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* Copyright (C) 2018 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 _MONITOR_H_
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#define _MONITOR_H_
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/* local includes */
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#include "avl_tree.h"
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#include "trace_buffer.h"
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/* Genode includes */
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#include <base/trace/types.h>
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namespace Genode { namespace Trace { class Connection; } }
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/**
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* To attach and detach trace-buffer dataspace in the right moments
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*/
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class Monitor_base
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{
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protected:
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Genode::Trace::Connection &_trace;
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Genode::Region_map &_rm;
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Genode::Trace::Buffer &_buffer_raw;
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Monitor_base(Genode::Trace::Connection &trace,
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Genode::Region_map &rm,
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Genode::Trace::Subject_id subject_id);
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~Monitor_base();
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};
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/**
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* Monitors tracing information of one tracing subject
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*/
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class Monitor : public Monitor_base,
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public Local::Avl_node<Monitor>
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{
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private:
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enum { MAX_ENTRY_LENGTH = 256 };
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Genode::Trace::Subject_id const _subject_id;
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Trace_buffer _buffer;
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unsigned long _report_id { 0 };
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Genode::Trace::Subject_info _info { };
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unsigned long long _recent_exec_time { 0 };
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char _curr_entry_data[MAX_ENTRY_LENGTH];
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void _update_info();
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public:
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Monitor(Genode::Trace::Connection &trace,
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Genode::Region_map &rm,
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Genode::Trace::Subject_id subject_id);
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void print(bool activity, bool affinity);
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/**************
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** Avl_node **
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**************/
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Monitor &find_by_subject_id(Genode::Trace::Subject_id const subject_id);
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bool higher(Monitor *monitor) { return monitor->_subject_id.id > _subject_id.id; }
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/***************
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** Accessors **
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***************/
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Genode::Trace::Subject_id subject_id() const { return _subject_id; }
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Genode::Trace::Subject_info const &info() const { return _info; }
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};
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/**
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* AVL tree of monitors with their subject ID as index
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*/
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struct Monitor_tree : Local::Avl_tree<Monitor>
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{
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struct No_match : Genode::Exception { };
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Monitor &find_by_subject_id(Genode::Trace::Subject_id const subject_id);
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};
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#endif /* _MONITOR_H_ */
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