Initial revision.
This commit is contained in:
curt
parent
95804faaea
commit
90f83b6ce1
3 changed files with 227 additions and 0 deletions
69
Time/Makefile
Normal file
69
Time/Makefile
Normal file
|
|
@ -0,0 +1,69 @@
|
||||||
|
#---------------------------------------------------------------------------
|
||||||
|
# Makefile
|
||||||
|
#
|
||||||
|
# Written by Curtis Olson, started May 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)
|
||||||
|
#---------------------------------------------------------------------------
|
||||||
|
|
||||||
|
|
||||||
|
TARGET = libtimer.a
|
||||||
|
|
||||||
|
CFILES = fg_timer.c
|
||||||
|
HFILES = fg_timer.h
|
||||||
|
OFILES = $(CFILES:.c=.o)
|
||||||
|
|
||||||
|
CC = gcc
|
||||||
|
CFLAGS = -g -Wall
|
||||||
|
# CFLAGS = -O2 -Wall
|
||||||
|
|
||||||
|
AR = ar
|
||||||
|
|
||||||
|
INCLUDES =
|
||||||
|
|
||||||
|
LIBS =
|
||||||
|
|
||||||
|
|
||||||
|
#---------------------------------------------------------------------------
|
||||||
|
# Primary Targets
|
||||||
|
#---------------------------------------------------------------------------
|
||||||
|
|
||||||
|
$(TARGET): $(OFILES)
|
||||||
|
$(AR) rv $(TARGET) $(OFILES)
|
||||||
|
|
||||||
|
all: $(TARGET)
|
||||||
|
|
||||||
|
clean:
|
||||||
|
rm -f *.o $(TARGET) *~ core
|
||||||
|
|
||||||
|
|
||||||
|
#---------------------------------------------------------------------------
|
||||||
|
# Secondary Targets
|
||||||
|
#---------------------------------------------------------------------------
|
||||||
|
|
||||||
|
fg_timer.o: fg_timer.c fg_timer.h
|
||||||
|
$(CC) $(CFLAGS) $(INCLUDES) -c fg_timer.c
|
||||||
|
|
||||||
|
|
||||||
|
#---------------------------------------------------------------------------
|
||||||
|
# $Log$
|
||||||
|
# Revision 1.1 1997/06/16 19:24:19 curt
|
||||||
|
# Initial revision.
|
||||||
|
#
|
||||||
108
Time/fg_timer.c
Normal file
108
Time/fg_timer.c
Normal file
|
|
@ -0,0 +1,108 @@
|
||||||
|
/**************************************************************************
|
||||||
|
* fg_timer.c -- 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)
|
||||||
|
**************************************************************************/
|
||||||
|
|
||||||
|
|
||||||
|
#include <signal.h> /* for timer routines */
|
||||||
|
#include <stdio.h> /* for printf() */
|
||||||
|
#include <time.h> /* for get/setitimer */
|
||||||
|
#include <sys/timeb.h> /* for ftime() and struct timeb */
|
||||||
|
|
||||||
|
|
||||||
|
#include "fg_timer.h"
|
||||||
|
|
||||||
|
|
||||||
|
unsigned long int fgSimTime;
|
||||||
|
static struct itimerval t, ot;
|
||||||
|
static void (*callbackfunc)();
|
||||||
|
|
||||||
|
|
||||||
|
/* This routine catches the SIGALRM */
|
||||||
|
void fgTimerCatch() {
|
||||||
|
/* ignore any SIGALRM's until we come back from our EOM iteration */
|
||||||
|
signal(SIGALRM, SIG_IGN);
|
||||||
|
|
||||||
|
/* printf("In fgTimerCatch()\n"); */
|
||||||
|
|
||||||
|
callbackfunc();
|
||||||
|
|
||||||
|
signal(SIGALRM, fgTimerCatch);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/* this routine initializes the interval timer to generate a SIGALRM after
|
||||||
|
* the specified interval (dt) */
|
||||||
|
void fgTimerInit(float dt, void (*f)()) {
|
||||||
|
int terr;
|
||||||
|
int isec;
|
||||||
|
float usec;
|
||||||
|
|
||||||
|
callbackfunc = f;
|
||||||
|
|
||||||
|
isec = (int) dt;
|
||||||
|
usec = 1000000* (dt - (float) isec);
|
||||||
|
|
||||||
|
t.it_interval.tv_sec = isec;
|
||||||
|
t.it_interval.tv_usec = usec;
|
||||||
|
t.it_value.tv_sec = isec;
|
||||||
|
t.it_value.tv_usec = usec;
|
||||||
|
/* printf("fgTimerInit() called\n"); */
|
||||||
|
fgTimerCatch(); /* set up for SIGALRM signal catch */
|
||||||
|
terr = setitimer( ITIMER_REAL, &t, &ot );
|
||||||
|
if (terr) {
|
||||||
|
printf("Error returned from setitimer");
|
||||||
|
exit(0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/* This function returns the number of milleseconds since the last
|
||||||
|
time it was called. */
|
||||||
|
int fgGetTimeInterval() {
|
||||||
|
static struct timeb last;
|
||||||
|
static struct timeb current;
|
||||||
|
static int inited = 0;
|
||||||
|
|
||||||
|
int interval;
|
||||||
|
|
||||||
|
if ( ! inited ) {
|
||||||
|
inited = 1;
|
||||||
|
ftime(&last);
|
||||||
|
interval = 0;
|
||||||
|
} else {
|
||||||
|
ftime(¤t);
|
||||||
|
interval = 1000 * (current.time - last.time) +
|
||||||
|
(current.millitm - last.millitm);
|
||||||
|
}
|
||||||
|
|
||||||
|
last = current;
|
||||||
|
return(interval);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/* $Log$
|
||||||
|
/* Revision 1.1 1997/06/16 19:24:20 curt
|
||||||
|
/* Initial revision.
|
||||||
|
/*
|
||||||
|
*/
|
||||||
50
Time/fg_timer.h
Normal file
50
Time/fg_timer.h
Normal file
|
|
@ -0,0 +1,50 @@
|
||||||
|
/**************************************************************************
|
||||||
|
* 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)());
|
||||||
|
|
||||||
|
/* This function returns the number of milleseconds since the last
|
||||||
|
time it was called. */
|
||||||
|
int fgGetTimeInterval();
|
||||||
|
|
||||||
|
|
||||||
|
#endif FG_TIMER_H
|
||||||
|
|
||||||
|
|
||||||
|
/* $Log$
|
||||||
|
/* Revision 1.1 1997/06/16 19:24:20 curt
|
||||||
|
/* Initial revision.
|
||||||
|
/*
|
||||||
|
*/
|
||||||
Loading…
Add table
Reference in a new issue