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flightgear/Time/fg_timer.h

60 lines
1.9 KiB
C

/**************************************************************************
* fg_timer.h -- time handling routines
*
* Written by Curtis Olson, started June 1997.
*
* Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id$
* (Log is kept at end of this file)
**************************************************************************/
#ifndef _FG_TIMER_H
#define _FG_TIMER_H
extern unsigned long int fgSimTime;
/* this routine initializes the interval timer to generate a SIGALRM
* after the specified interval (dt) the function f() will be called
* at each signal */
void fgTimerInit( float dt, void (*f)( void ) );
/* This function returns the number of milleseconds since the last
time it was called. */
int fgGetTimeInterval( void );
#endif /* _FG_TIMER_H */
/* $Log$
/* Revision 1.4 1998/01/22 02:59:43 curt
/* Changed #ifdef FILE_H to #ifdef _FILE_H
/*
* Revision 1.3 1998/01/19 18:40:40 curt
* Tons of little changes to clean up the code and to remove fatal errors
* when building with the c++ compiler.
*
* Revision 1.2 1997/07/23 21:52:27 curt
* Put comments around the text after an #endif for increased portability.
*
* Revision 1.1 1997/06/16 19:24:20 curt
* Initial revision.
*
*/