1 | // -*- Mode: C -*- |
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2 | // |
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3 | // Cforall Version 1.0.0 Copyright (C) 2017 University of Waterloo |
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4 | // |
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5 | // The contents of this file are covered under the licence agreement in the |
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6 | // file "LICENCE" distributed with Cforall. |
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7 | // |
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8 | // matrixSum.c -- |
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9 | // |
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10 | // Author : Peter A. Buhr |
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11 | // Created On : Mon Oct 9 08:29:28 2017 |
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12 | // Last Modified By : Peter A. Buhr |
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13 | // Last Modified On : Fri May 25 09:34:27 2018 |
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14 | // Update Count : 10 |
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15 | // |
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16 | |
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17 | #include <fstream.hfa> |
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18 | #include <kernel.hfa> |
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19 | #include <thread.hfa> |
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20 | |
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21 | thread Adder { |
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22 | int * row, cols, & subtotal; // communication |
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23 | }; |
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24 | |
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25 | void ?{}( Adder & adder, int row[], int cols, int & subtotal ) { |
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26 | adder.[ row, cols ] = [ row, cols ]; // expression disallowed in multi-member access |
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27 | &adder.subtotal = &subtotal; |
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28 | } |
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29 | |
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30 | void main( Adder & adder ) with( adder ) { // thread starts here |
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31 | subtotal = 0; |
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32 | for ( int c = 0; c < cols; c += 1 ) { |
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33 | subtotal += row[c]; |
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34 | } // for |
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35 | } |
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36 | |
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37 | int main() { |
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38 | const int rows = 10, cols = 1000; |
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39 | int matrix[rows][cols], subtotals[rows], total = 0; |
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40 | processor p; // add kernel thread |
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41 | |
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42 | for ( int r = 0; r < rows; r += 1 ) { |
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43 | for ( int c = 0; c < cols; c += 1 ) { |
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44 | matrix[r][c] = 1; |
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45 | } // for |
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46 | } // for |
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47 | Adder * adders[rows]; |
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48 | for ( int r = 0; r < rows; r += 1 ) { // start threads to sum rows |
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49 | adders[r] = &(*malloc()){ matrix[r], cols, subtotals[r] }; |
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50 | // adders[r] = new( matrix[r], cols, &subtotals[r] ); |
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51 | } // for |
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52 | for ( int r = 0; r < rows; r += 1 ) { // wait for threads to finish |
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53 | delete( adders[r] ); |
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54 | total += subtotals[r]; // total subtotals |
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55 | } // for |
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56 | sout | total | endl; |
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57 | } |
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58 | |
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59 | // Local Variables: // |
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60 | // tab-width: 4 // |
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61 | // compile-command: "cfa matrixSum.c" // |
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62 | // End: // |
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