What I funny rabbit it is !?!
Why do you need to fork a process for every recursive step ?
> -----Original Message-----
> From: Patrick W. O'Neill [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, January 26, 1999 19:42
> To: Michael Sinz
> Cc: [EMAIL PROTECTED]
> Subject: Problem
>
>
> I apologize if this is the incorrect place to send this, I tried
> submitting a bug report but I don't know if it got through, and it is
> important that I resolve this ASAP.
>
> I have a problem with JDK1.1.7-v1a running green threads. I am running
> basic fibonacci code, using the recursive algorithm and implemented with
> threads. This code runs without incident on the Solaris JDK. However,
> when I try to run it using the Blackdown port, it works fine up to fib 5,
> but when I run fib 6, I get a seg fault. I am running this on a Debian
> 2.0 system with glibc. I have a similar problem with n-queens code, it
> runs fine on Solaris, but on Linux problems arise above an 8x8 board.
>
> I you had any ideas as to why this happens I would greatly appreciate
> them. Thanks.
>
>
> - Pat
>
>
> --------- Code -------------
>
> import java.util.*;
>
> public class java_fib extends Thread
> {
> private int fib;
>
> java_fib(int number) {
> fib = number;
> }
>
> public void run() {
> if( (fib==0) || (fib == 1)) {
> fib = fib;
> }
>
> else {
> java_fib java_fib_thread_1 = new java_fib(fib - 1);
> java_fib java_fib_thread_2 = new java_fib(fib - 2);
>
> java_fib_thread_1.start();
> java_fib_thread_2.start();
>
> try {
> java_fib_thread_1.join();
> java_fib_thread_2.join();
> fib = java_fib_thread_1.get_fib() +
> java_fib_thread_2.get_fib();
> }
> catch(InterruptedException e){
> e.printStackTrace();
> }
> }
> }
>
> private int get_fib() {
> return fib;
> }
>
>
> public static void main(String arg[]) {
> java_fib fib;
> int number;
> number = new Integer(arg[0]).intValue();
> fib = new java_fib(number);
> Date now;
> Date then = new Date();
> fib.start();
>
> try {
> fib.join();
> now = new Date();
> System.out.println("The total execution time is " +
> ((now.getTime() - then.getTime())) + "ms.");
> System.out.println("The fibonacci for " + number + " is: " +
> fib.get_fib());
> }
> catch(InterruptedException e) {
> e.printStackTrace();
> }
> }
> }
>
