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81 lines
2 KiB
C++
81 lines
2 KiB
C++
// -*- C++ -*-
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//=============================================================================
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/**
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* @file Countdown_Time.h
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*
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* $Id: Countdown_Time.h 85365 2009-05-18 08:27:42Z johnnyw $
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*
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* @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
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*/
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//=============================================================================
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#ifndef ACE_COUNTDOWN_TIME_H
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#define ACE_COUNTDOWN_TIME_H
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#include /**/ "ace/pre.h"
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#include /**/ "ace/ACE_export.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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#include "ace/Time_Value.h"
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#include "ace/Copy_Disabled.h"
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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/**
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* @class ACE_Countdown_Time
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*
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* @brief Keeps track of the amount of elapsed time.
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*
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* This class has a side-effect on the @c max_wait_time -- every
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* time the stop() method is called the @c max_wait_time is
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* updated.
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*/
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class ACE_Export ACE_Countdown_Time : private ACE_Copy_Disabled
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{
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public:
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/// Cache the @a max_wait_time and call @c start().
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ACE_Countdown_Time (ACE_Time_Value *max_wait_time);
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/// Destructor, makes sure the max_wait_time that got passed as pointer
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/// to the constructor is updated with the time elapsed.
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~ACE_Countdown_Time (void);
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/// Cache the current time and enter a start state.
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void start (void);
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/// Subtract the elapsed time from max_wait_time_ and enter a stopped
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/// state.
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void stop (void);
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/// Calls stop and then start. max_wait_time_ is modified by the
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/// call to stop.
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void update (void);
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/// Returns true if we've already been stopped, else false.
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bool stopped (void) const;
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private:
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/// Maximum time we were willing to wait.
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ACE_Time_Value *max_wait_time_;
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/// Beginning of the start time.
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ACE_Time_Value start_time_;
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/// Keeps track of whether we've already been stopped.
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bool stopped_;
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};
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ACE_END_VERSIONED_NAMESPACE_DECL
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#include /**/ "ace/post.h"
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#if defined (__ACE_INLINE__)
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#include "ace/Countdown_Time.inl"
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#endif /* __ACE_INLINE__ */
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#endif /* ACE_COUNTDOWN_TIME_H */
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