1 // event.hxx -- Flight Gear periodic event scheduler
3 // Written by Curtis Olson, started December 1997.
5 // Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 // (Log is kept at end of this file)
30 # error This library requires C++
35 extern "C" void *memmove(void *, const void *, size_t);
36 extern "C" void *memset(void *, int, size_t);
40 #include <deque> // STL double ended queue
41 #include <list> // STL list
43 #include "fg_time.hxx"
46 #define FG_EVENT_SUSP 0
47 #define FG_EVENT_READY 1
48 #define FG_EVENT_QUEUED 2
52 char description[256];
54 void (*event)( void ); // pointer to function
55 int status; // status flag
57 long interval; // interval in ms between each iteration of this event
59 fg_timestamp last_run;
61 fg_timestamp next_run;
63 long cum_time; // cumulative processor time of this event
64 long min_time; // time of quickest execution
65 long max_time; // time of slowest execution
66 long count; // number of times executed
73 deque < fgEVENT > event_table;
76 list < fgEVENT * > run_queue;
83 // Initialize the scheduling subsystem
86 // Register an event with the scheduler
87 void Register(char *desc, void (*event)( void ), int status,
90 // Update the scheduling parameters for an event
93 // Delete a scheduled event
96 // Temporarily suspend scheduling of an event
99 // Resume scheduling and event
102 // Dump scheduling stats
103 void PrintStats( void );
105 // Add pending jobs to the run queue and run the job at the front
107 void Process( void );
110 ~fgEVENT_MGR ( void );
114 // Wrapper to dump scheduling stats
115 void fgEventPrintStats( void );
117 extern fgEVENT_MGR global_events;
124 // Revision 1.4 1998/06/12 00:59:52 curt
125 // Build only static libraries.
126 // Declare memmove/memset for Sloaris.
127 // Rewrote fg_time.c routine to get LST start seconds to better handle
128 // Solaris, and be easier to port, and understand the GMT vs. local
131 // Revision 1.3 1998/06/03 00:48:12 curt
132 // No .h for STL includes.
134 // Revision 1.2 1998/05/22 21:14:54 curt
135 // Rewrote event.cxx in C++ as a class using STL for the internal event list
136 // and run queue this removes the arbitrary list sizes and makes things much
137 // more dynamic. Because this is C++-classified we can now have multiple
138 // event_tables if we'd ever want them.
140 // Revision 1.1 1998/04/24 00:52:26 curt
141 // Wrapped "#include <config.h>" in "#ifdef HAVE_CONFIG_H"
143 // Separated out lighting calcs into their own file.
145 // Revision 1.4 1998/04/21 17:01:43 curt
146 // Fixed a problems where a pointer to a function was being passed around. In
147 // one place this functions arguments were defined as ( void ) while in another
148 // place they were defined as ( int ). The correct answer was ( int ).
150 // Prepairing for C++ integration.
152 // Revision 1.3 1998/01/22 02:59:43 curt
153 // Changed #ifdef FILE_H to #ifdef _FILE_H
155 // Revision 1.2 1998/01/19 18:40:39 curt
156 // Tons of little changes to clean up the code and to remove fatal errors
157 // when building with the c++ compiler.
159 // Revision 1.1 1997/12/30 04:19:22 curt