175 lines
4.7 KiB
C++
175 lines
4.7 KiB
C++
// event.hxx -- Flight Gear periodic event scheduler
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//
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// Written by Curtis Olson, started December 1997.
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//
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// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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// (Log is kept at end of this file)
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#ifndef _EVENT_HXX
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#define _EVENT_HXX
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#ifndef __cplusplus
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# error This library requires C++
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#endif
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#if defined ( __sun__ ) || defined ( __sgi )
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extern "C" void *memmove(void *, const void *, size_t);
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extern "C" void *memset(void *, int, size_t);
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#endif
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#include <deque> // STL double ended queue
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#include <list> // STL list
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#ifdef NEEDNAMESPACESTD
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using namespace std;
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#endif
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#include "fg_time.hxx"
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#define FG_EVENT_SUSP 0
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#define FG_EVENT_READY 1
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#define FG_EVENT_QUEUED 2
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typedef struct {
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char description[256];
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void (*event)( void ); // pointer to function
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int status; // status flag
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long interval; // interval in ms between each iteration of this event
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fg_timestamp last_run;
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fg_timestamp current;
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fg_timestamp next_run;
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long cum_time; // cumulative processor time of this event
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long min_time; // time of quickest execution
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long max_time; // time of slowest execution
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long count; // number of times executed
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} fgEVENT;
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class fgEVENT_MGR {
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// Event table
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deque < fgEVENT > event_table;
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// Run Queue
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list < fgEVENT * > run_queue;
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public:
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// Constructor
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fgEVENT_MGR ( void );
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// Initialize the scheduling subsystem
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void Init( void );
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// Register an event with the scheduler
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void Register(char *desc, void (*event)( void ), int status,
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int interval);
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// Update the scheduling parameters for an event
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void Update( void );
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// Delete a scheduled event
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void Delete( void );
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// Temporarily suspend scheduling of an event
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void Suspend( void );
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// Resume scheduling and event
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void Resume( void );
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// Dump scheduling stats
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void PrintStats( void );
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// Add pending jobs to the run queue and run the job at the front
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// of the queue
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void Process( void );
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// Destructor
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~fgEVENT_MGR ( void );
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};
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// Wrapper to dump scheduling stats
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void fgEventPrintStats( void );
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extern fgEVENT_MGR global_events;
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#endif // _EVENT_HXX
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// $Log$
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// Revision 1.7 1998/07/30 23:48:54 curt
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// Sgi build tweaks.
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// Pause support.
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//
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// Revision 1.6 1998/07/24 21:42:25 curt
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// Output message tweaks.
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//
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// Revision 1.5 1998/07/13 21:02:07 curt
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// Wrote access functions for current fgOPTIONS.
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//
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// Revision 1.4 1998/06/12 00:59:52 curt
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// Build only static libraries.
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// Declare memmove/memset for Sloaris.
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// Rewrote fg_time.c routine to get LST start seconds to better handle
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// Solaris, and be easier to port, and understand the GMT vs. local
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// timezone issues.
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//
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// Revision 1.3 1998/06/03 00:48:12 curt
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// No .h for STL includes.
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//
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// Revision 1.2 1998/05/22 21:14:54 curt
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// Rewrote event.cxx in C++ as a class using STL for the internal event list
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// and run queue this removes the arbitrary list sizes and makes things much
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// more dynamic. Because this is C++-classified we can now have multiple
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// event_tables if we'd ever want them.
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//
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// Revision 1.1 1998/04/24 00:52:26 curt
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// Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
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// Fog color fixes.
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// Separated out lighting calcs into their own file.
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//
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// Revision 1.4 1998/04/21 17:01:43 curt
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// Fixed a problems where a pointer to a function was being passed around. In
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// one place this functions arguments were defined as ( void ) while in another
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// place they were defined as ( int ). The correct answer was ( int ).
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//
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// Prepairing for C++ integration.
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//
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// Revision 1.3 1998/01/22 02:59:43 curt
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// Changed #ifdef FILE_H to #ifdef _FILE_H
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//
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// Revision 1.2 1998/01/19 18:40:39 curt
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// Tons of little changes to clean up the code and to remove fatal errors
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// when building with the c++ compiler.
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//
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// Revision 1.1 1997/12/30 04:19:22 curt
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// Initial revision.
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