| 1 | //
|
|---|
| 2 | // Cforall Version 1.0.0 Copyright (C) 2017 University of Waterloo
|
|---|
| 3 | //
|
|---|
| 4 | // The contents of this file are covered under the licence agreement in the
|
|---|
| 5 | // file "LICENCE" distributed with Cforall.
|
|---|
| 6 | //
|
|---|
| 7 | // fibonacci.c -- 3-state finite-state machine
|
|---|
| 8 | //
|
|---|
| 9 | // Author : Colby Parsons
|
|---|
| 10 | // Created On : Thu July 6 07:29:37 2023
|
|---|
| 11 | // Last Modified By : Peter A. Buhr
|
|---|
| 12 | // Last Modified On : Thu Jul 6 21:49:04 2023
|
|---|
| 13 | // Update Count : 18
|
|---|
| 14 | //
|
|---|
| 15 |
|
|---|
| 16 | #include <fstream.hfa>
|
|---|
| 17 | #include <coroutine.hfa>
|
|---|
| 18 | #include <stdlib.hfa>
|
|---|
| 19 |
|
|---|
| 20 | exception fib_num {};
|
|---|
| 21 | vtable(fib_num) fib_num_vt;
|
|---|
| 22 | fib_num except{ &fib_num_vt };
|
|---|
| 23 |
|
|---|
| 24 | coroutine Fibonacci { int fn; }; // used for communication
|
|---|
| 25 |
|
|---|
| 26 | void main( Fibonacci & fib ) with( fib ) { // called on first resume
|
|---|
| 27 | int fn1, fn2; // retained between resumes
|
|---|
| 28 | try {
|
|---|
| 29 | poll( fib );
|
|---|
| 30 | suspend; // restart last resume
|
|---|
| 31 | } catchResume ( fib_num * e ) {
|
|---|
| 32 | fn = 0; fn1 = fn; // 1st case
|
|---|
| 33 | }
|
|---|
| 34 | try {
|
|---|
| 35 | poll( fib );
|
|---|
| 36 | suspend; // restart last resume
|
|---|
| 37 | } catchResume ( fib_num * e ) {
|
|---|
| 38 | fn = 1; fn2 = fn1; fn1 = fn; // 2nd case
|
|---|
| 39 | }
|
|---|
| 40 | try {
|
|---|
| 41 | for () {
|
|---|
| 42 | poll( fib );
|
|---|
| 43 | suspend; // restart last resume
|
|---|
| 44 | } // for
|
|---|
| 45 | } catchResume ( fib_num * e ) {
|
|---|
| 46 | fn = fn1 + fn2; fn2 = fn1; fn1 = fn; // general case
|
|---|
| 47 | }
|
|---|
| 48 | }
|
|---|
| 49 |
|
|---|
| 50 | int main() {
|
|---|
| 51 | Fibonacci f1, f2;
|
|---|
| 52 | for ( i; 8 ) {
|
|---|
| 53 | resumeAt( f1, except ); resumeAt( f2, except );
|
|---|
| 54 | sout | wd( 5, resume( f1 ).fn ) | wd( 5, resume( f2 ).fn );
|
|---|
| 55 | }
|
|---|
| 56 | }
|
|---|
| 57 |
|
|---|
| 58 | // Local Variables: //
|
|---|
| 59 | // compile-command: "cfa fibonacci_nonlocal.cfa" //
|
|---|
| 60 | // End: //
|
|---|
