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109 lines
3.2 KiB
C++
109 lines
3.2 KiB
C++
// -*- C++ -*-
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//=============================================================================
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/**
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* @file Monitor_Admin.h
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*
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* $Id: Monitor_Admin.h 85297 2009-05-07 01:40:41Z parsons $
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*
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* @author Jeff Parsons <j.parsons@vanderbilt.edu>
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*/
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//=============================================================================
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#ifndef MONITOR_ADMIN_H
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#define MONITOR_ADMIN_H
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#include /**/ "ace/pre.h"
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#include "ace/Event_Handler.h"
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#if !defined (ACE_LACKS_PRAGMA_ONCE)
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#pragma once
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#endif /* ACE_LACKS_PRAGMA_ONCE */
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#if defined (ACE_HAS_MONITOR_FRAMEWORK) && (ACE_HAS_MONITOR_FRAMEWORK == 1)
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#include "ace/Monitor_Base.h"
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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namespace ACE
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{
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namespace Monitor_Control
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{
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class Monitor_Query;
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/**
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* @class Monitor_Point_Auto_Updater
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*
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* @brief Automates periodic updating of monitor point classes.
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*
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* A single instance of this class is held by the Admin
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* class below. For a monitor point that must periodically
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* check what they are monitoring, the admin class registers
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* the monitor point with the ACE reactor. Each time the
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* interval times out, the reactor will call the
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* handle_timeout() method below, and pass in the appropriate
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* monitor point. The handle_timeout() method will in turn
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* call the appropriate method on the monitor point to get
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* it to update its data.
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*/
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class Monitor_Point_Auto_Updater : public ACE_Event_Handler
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{
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public:
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/// Override of ACE base class method.
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virtual int handle_timeout (const ACE_Time_Value& interval,
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const void* monitor_point);
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};
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/**
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* @class Admin
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*
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* @brief Accesses monitor points or groups and manages the registries.
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*
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* Responsible for adding and removing monitor points and creating
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* automatic periodic actions that update or query monitor points.
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*/
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class ACE_Export Monitor_Admin
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{
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public:
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Monitor_Admin (void);
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~Monitor_Admin (void);
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/// Add or access monitor points in a global registry
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/// If the ACE_Time_Value arg is non-zero,
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/// the monitor point, the auto updater member, and the given time
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/// interval are passed to our reactor's register_timeout()
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/// method.
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bool monitor_point (Monitor_Base* monitor_point,
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const ACE_Time_Value& time);
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Monitor_Base* monitor_point (const char* name);
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/// Works similarly to monitor_point() above, but registers the
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/// handler arg's handle_timeout() method with the reactor,
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/// instead of our auto_updater_'s handle_timeout().
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void auto_query (ACE_Event_Handler* handler,
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Monitor_Query* query,
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const ACE_Time_Value& time);
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/// This mutator allows the application to create its own reactor
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/// and substitute it for the default reactor.
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void reactor (ACE_Reactor* new_reactor);
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ACE_Reactor* reactor (void) const;
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private:
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Monitor_Point_Auto_Updater auto_updater_;
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ACE_Reactor* reactor_;
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bool default_reactor_;
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};
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}
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}
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ACE_END_VERSIONED_NAMESPACE_DECL
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#endif /* ACE_HAS_MONITOR_FRAMEWORK==1 */
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#include /**/ "ace/post.h"
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#endif // MONITOR_ADMIN_H
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