source:
tests/concurrent/examples/matrixSum.cfa
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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 | // matrixSum.cfa -- |
8 | // |
9 | // Author : Peter A. Buhr |
10 | // Created On : Mon Oct 9 08:29:28 2017 |
11 | // Last Modified By : Peter A. Buhr |
12 | // Last Modified On : Wed Feb 20 08:37:53 2019 |
13 | // Update Count : 16 |
14 | // |
15 | |
16 | #include <fstream.hfa> |
17 | #include <kernel.hfa> |
18 | #include <thread.hfa> |
19 | |
20 | thread Adder { |
21 | int * row, cols, & subtotal; // communication |
22 | }; |
23 | |
24 | void ?{}( Adder & adder, int row[], int cols, int & subtotal ) { |
25 | adder.[ row, cols ] = [ row, cols ]; // expression disallowed in multi-member access |
26 | &adder.subtotal = &subtotal; |
27 | } |
28 | |
29 | void main( Adder & adder ) with( adder ) { // thread starts here |
30 | subtotal = 0; |
31 | for ( c; cols ) { |
32 | subtotal += row[c]; |
33 | } // for |
34 | } |
35 | |
36 | int main() { |
37 | /* const */ int rows = 10, cols = 1000; |
38 | int matrix[rows][cols], subtotals[rows], total = 0; |
39 | processor p; // add kernel thread |
40 | |
41 | for ( r; rows ) { |
42 | for ( c; cols ) { |
43 | matrix[r][c] = 1; |
44 | } // for |
45 | } // for |
46 | Adder * adders[rows]; |
47 | for ( r; rows ) { // start threads to sum rows |
48 | adders[r] = &(*malloc()){ matrix[r], cols, subtotals[r] }; |
49 | // adders[r] = new( matrix[r], cols, &subtotals[r] ); |
50 | } // for |
51 | for ( r; rows ) { // wait for threads to finish |
52 | delete( adders[r] ); |
53 | total += subtotals[r]; // total subtotals |
54 | } // for |
55 | sout | total; |
56 | } |
57 | |
58 | // Local Variables: // |
59 | // tab-width: 4 // |
60 | // compile-command: "cfa matrixSum.cfa" // |
61 | // End: // |
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