+//
+// timestamp.hxx -- class for managing a timestamp (seconds & milliseconds.)
+//
+// Written by Curtis Olson, started December 1998.
+//
+// Copyright (C) 1998 Curtis L. Olson - curt@flightgear.org
+//
+// 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 _TIMESTAMP_HXX
+#define _TIMESTAMP_HXX
+
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef HAVE_WINDOWS_H
+# include <windows.h>
+#endif
+
+#include <time.h>
+
+#ifdef HAVE_SYS_TIMEB_H
+# include <sys/timeb.h> // for ftime() and struct timeb
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h> // for gettimeofday()
+#endif
+#ifdef HAVE_SYS_TIME_H
+# include <sys/time.h> // for get/setitimer, gettimeofday, struct timeval
+#endif
+
+
+class fgTIMESTAMP {
+
+private:
+
+ long seconds;
+ long millis;
+
+public:
+
+ fgTIMESTAMP();
+ fgTIMESTAMP( const long s, const long m );
+ ~fgTIMESTAMP();
+
+ // Set time to current time
+ void stamp();
+
+ fgTIMESTAMP& operator = ( const fgTIMESTAMP& t );
+
+ friend fgTIMESTAMP operator + (const fgTIMESTAMP& t, const long& m);
+ friend long operator - (const fgTIMESTAMP& a, const fgTIMESTAMP& b);
+
+ inline long get_seconds() const { return seconds; }
+ inline long get_millis() const { return millis; }
+};
+
+inline fgTIMESTAMP::fgTIMESTAMP() {
+}
+
+inline fgTIMESTAMP::fgTIMESTAMP( const long s, const long m ) {
+ seconds = s;
+ millis = m;
+}
+
+inline fgTIMESTAMP::~fgTIMESTAMP() {
+}
+
+inline fgTIMESTAMP& fgTIMESTAMP::operator = (const fgTIMESTAMP& t)
+{
+ seconds = t.seconds;
+ millis = t.millis;
+ return *this;
+}
+
+inline void fgTIMESTAMP::stamp() {
+#if defined( WIN32 )
+ unsigned int t;
+ t = timeGetTime();
+ seconds = 0;
+ millis = t;
+#elif defined( HAVE_GETTIMEOFDAY )
+ struct timeval current;
+ struct timezone tz;
+ // fg_timestamp currtime;
+ gettimeofday(¤t, &tz);
+ seconds = current.tv_sec;
+ millis = current.tv_usec / 1000;
+#elif defined( HAVE_GETLOCALTIME )
+ SYSTEMTIME current;
+ GetLocalTime(¤t);
+ seconds = current.wSecond;
+ millis = current.wMilliseconds;
+#elif defined( HAVE_FTIME )
+ struct timeb current;
+ ftime(¤t);
+ seconds = current.time;
+ millis = current.millitm;
+#else
+# error Port me
+#endif
+}
+
+// difference between time stamps in milliseconds
+inline fgTIMESTAMP operator + (const fgTIMESTAMP& t, const long& m) {
+#ifdef WIN32
+ return fgTIMESTAMP( 0, t.millis + m );
+#else
+ return fgTIMESTAMP( t.seconds + ( t.millis + m ) / 1000,
+ ( t.millis + m ) % 1000 );
+#endif
+}
+
+// difference between time stamps in milliseconds
+inline long operator - (const fgTIMESTAMP& a, const fgTIMESTAMP& b)
+{
+#if defined( WIN32 )
+ return a.millis - b.millis;
+#else
+ return 1000 * (a.seconds - b.seconds) + (a.millis - b.millis);
+#endif
+}
+
+
+#endif // _TIMESTAMP_HXX
+
+
+// $Log$
+// Revision 1.1 1998/12/05 14:21:33 curt
+// Moved struct fg_timestamp to class fgTIMESTAMP and moved it's definition
+// to it's own file, timestamp.hxx.
+//
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