1 | //
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2 | // Cforall Version 1.0.0 Copyright (C) 2015 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 | // io-acquire.cfa --
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8 | //
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9 | // Author : Peter A. Buhr
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10 | // Created On : Mon Mar 1 18:40:09 2021
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11 | // Last Modified By : Peter A. Buhr
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12 | // Last Modified On : Fri Jan 14 09:13:43 2022
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13 | // Update Count : 73
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14 | //
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15 |
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16 | #include <fstream.hfa>
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17 | #include <thread.hfa>
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18 | #include <mutex_stmt.hfa>
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19 |
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20 | Duration default_preemption() { return 0; }
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21 |
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22 | // above output used as input to parallel threads
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23 | thread T2 {};
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24 | void main( T2 & ) {
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25 | int a, b, c, d, e, f, g, h, i;
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26 | for ( 100 ) { // expression protection
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27 | mutex(sin) sin | a | b | c | d | e | f | g | h | i;
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28 | }
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29 | mutex( sin ) { // statement protection
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30 | for ( 100 ) {
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31 | sin | a | b | c | d | e | f | g | h | i;
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32 | }
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33 | }
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34 | { // duplicate protection demonstrating recursive lock
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35 | ifstream & h1( ifstream & is ) { // helper
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36 | mutex( is ) return is | a | b | c | d; // unnecessary mutex
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37 | }
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38 | ifstream & h2( ifstream & is ) { // helper
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39 | mutex( is ) return is | f | g | h | i; // unnecessary mutex
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40 | }
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41 | mutex( sin ) { // unnecessary mutex
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42 | for ( 5 ) {
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43 | mutex( sin ) {
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44 | sin | a | b | c | d | e | f | g | h | i;
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45 | sin | h1 | e | h2; // refactored code
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46 | }
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47 | }
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48 | }
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49 | }
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50 | }
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51 | int main() {
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52 | processor p;
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53 | {
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54 | T2 t[5];
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55 | }
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56 | sout | "done";
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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 io-acquire.cfa" //
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62 | // End: //
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