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