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This patch equips init with the ability to report its internal state in the form of a "state" report. This feature can be enabled by placing a '<report>' node in init's configuration. The report node accepts the following arguments (with their default values): 'delay_ms="100"': specifies the number of milliseconds to wait before producing a new report. This way, many consecutive state changes - like they occur during the startup - do not result in an overly large number of reports but are merged into one final report. 'buffer="4K"': the maximum size of the report in bytes. The attribute accepts the use of K/M/G as units. 'init_ram="no"': if enabled, the report will contain a '<ram>' node with the memory stats of init. 'ids="no"': supplement the children in the report with unique IDs, which may be used to infer the lifetime of children accross configuration updates in the future; 'requested="no"': if enabled, the report will contain information about all session requests initiated by the children. 'provided="no"': if enabled, the report will contain information about all sessions provided by all servers. 'session_args="no"': level of detail of the session information generated via 'requested' or 'provided'. 'child_ram="no"': if enabled, the report will contain a '<ram>' node for each child based on the information obtained from the child's RAM session. Issue #2246
69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
/*
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* \brief Report configuration
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* \author Norman Feske
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* \date 2017-01-16
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*/
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/*
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* Copyright (C) 2017 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__INIT__REPORT_H_
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#define _INCLUDE__INIT__REPORT_H_
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#include <util/noncopyable.h>
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#include <util/xml_node.h>
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namespace Init {
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struct Report_update_trigger;
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struct Report_detail;
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}
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class Init::Report_detail : Genode::Noncopyable
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{
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private:
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bool _children = false;
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bool _ids = false;
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bool _requested = false;
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bool _provided = false;
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bool _session_args = false;
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bool _child_ram = false;
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bool _init_ram = false;
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public:
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Report_detail() { }
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Report_detail(Genode::Xml_node report)
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{
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_children = true;
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_ids = report.attribute_value("ids", false);
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_requested = report.attribute_value("requested", false);
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_provided = report.attribute_value("provided", false);
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_session_args = report.attribute_value("session_args", false);
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_child_ram = report.attribute_value("child_ram", false);
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_init_ram = report.attribute_value("init_ram", false);
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}
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bool children() const { return _children; }
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bool ids() const { return _ids; }
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bool requested() const { return _requested; }
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bool provided() const { return _provided; }
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bool session_args() const { return _session_args; }
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bool child_ram() const { return _child_ram; }
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bool init_ram() const { return _init_ram; }
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};
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struct Init::Report_update_trigger
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{
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virtual void trigger_report_update() = 0;
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};
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#endif /* _INCLUDE__INIT__REPORT_H_ */
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