source:
tests/generator/suspend_then.cfa
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1 | // |
2 | // Cforall Version 1.0.0 Copyright (C) 2019 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 | // suspend_then.cfa -- |
8 | // |
9 | // Author : Peter A. Buhr |
10 | // Created On : Mon Apr 29 12:01:35 2019 |
11 | // Last Modified By : Peter A. Buhr |
12 | // Last Modified On : Thu Jun 10 21:55:51 2021 |
13 | // Update Count : 1 |
14 | // |
15 | |
16 | #include <fstream.hfa> |
17 | |
18 | generator Fibonacci { |
19 | int fn1, fn2; // retained between resumes |
20 | int fn; // used for communication |
21 | }; |
22 | |
23 | void main( Fibonacci & fib ) with( fib ) { // called on first resume |
24 | fn = 0; fn1 = fn; // 1st case |
25 | suspend { sout | "Then!"; } // restart last resume |
26 | fn = 1; fn2 = fn1; fn1 = fn; // 2nd case |
27 | suspend { sout | "Then!"; } // restart last resume |
28 | for () { |
29 | fn = fn1 + fn2; fn2 = fn1; fn1 = fn; // general case |
30 | suspend { sout | "Then!"; } // restart last resume |
31 | } // for |
32 | } |
33 | |
34 | int next( Fibonacci & fib ) with( fib ) { |
35 | resume( fib ); // restart last suspend |
36 | return fn; |
37 | } |
38 | |
39 | int main() { |
40 | Fibonacci f1, f2; |
41 | for ( 10 ) { // print N Fibonacci values |
42 | int v1 = next( f1 ); |
43 | int v2 = next( f2 ); |
44 | sout | v1 | v2; |
45 | } // for |
46 | } |
47 | |
48 | // Local Variables: // |
49 | // tab-width: 4 // |
50 | // compile-command: "cfa runningTotal.cfa" // |
51 | // End: // |
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