47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
// fg_timer.hxx -- time handling routines
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//
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// Written by Curtis Olson, started June 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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#ifndef _FG_TIMER_HXX
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#define _FG_TIMER_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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extern unsigned long int fgSimTime;
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// this routine initializes the interval timer to generate a SIGALRM
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// after the specified interval (dt) the function f() will be called
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// at each signal
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void fgTimerInit( float dt, void (*f)( int ) );
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// This function returns the number of milleseconds since the last
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// time it was called.
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int fgGetTimeInterval( void );
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#endif // _FG_TIMER_HXX
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