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 | // prodcons.c -- |
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8 | // |
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9 | // Author : Peter A. Buhr |
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10 | // Created On : Mon Sep 18 12:23:39 2017 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Mon Oct 30 18:01:19 2017 |
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13 | // Update Count : 41 |
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14 | // |
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15 | |
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16 | #include <fstream> |
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17 | #include <coroutine> |
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18 | #include <stdlib> // rand48 |
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19 | #include <unistd.h> // getpid |
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20 | |
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21 | coroutine Cons; // forward |
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22 | int delivery( Cons & cons, int p1, int p2 ); |
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23 | void stop( Cons & cons ); |
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24 | |
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25 | coroutine Prod { |
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26 | Cons *c; |
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27 | int N, money, receipt; |
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28 | }; |
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29 | void main( Prod & prod ) { // starter ::main |
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30 | // 1st resume starts here |
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31 | for ( int i = 0; i < prod.N; i += 1 ) { |
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32 | int p1 = rand48( 100 ); |
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33 | int p2 = rand48( 100 ); |
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34 | sout | p1 | " " | p2 | endl; |
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35 | int status = delivery( *prod.c, p1, p2 ); |
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36 | sout | " $" | prod.money | endl; |
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37 | sout | status | endl; |
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38 | prod.receipt += 1; |
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39 | } |
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40 | stop( *prod.c ); |
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41 | sout | "prod stops" | endl; |
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42 | } |
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43 | int payment( Prod & prod, int money ) { |
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44 | prod.money = money; |
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45 | resume( prod ); // main 1st time, then |
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46 | return prod.receipt; // prod in delivery |
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47 | } |
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48 | void start( Prod & prod, int N, Cons &c ) { |
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49 | prod.N = N; |
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50 | prod.c = &c; |
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51 | prod.receipt = 0; |
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52 | resume( prod ); // activate main |
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53 | } |
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54 | |
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55 | coroutine Cons { |
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56 | Prod * p; |
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57 | int p1, p2, status; |
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58 | bool done; |
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59 | }; |
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60 | void ?{}( Cons & cons, Prod & p ) { |
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61 | cons.p = &p; |
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62 | cons.status = 0; |
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63 | cons.done = false; |
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64 | } |
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65 | void ^?{}( Cons & cons ) {} |
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66 | void main( Cons & cons ) { // starter prod |
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67 | // 1st resume starts here |
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68 | int money = 1, receipt; |
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69 | for ( ; ! cons.done; ) { |
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70 | sout | cons.p1 | " " | cons.p2 | endl; |
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71 | sout | " $" | money | endl; |
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72 | cons.status += 1; |
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73 | receipt = payment( *cons.p, money ); |
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74 | sout | " #" | receipt | endl; |
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75 | money += 1; |
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76 | } |
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77 | sout | "cons stops" | endl; |
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78 | } |
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79 | int delivery( Cons & cons, int p1, int p2 ) { |
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80 | cons.p1 = p1; |
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81 | cons.p2 = p2; |
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82 | resume( cons ); // main 1st time, then |
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83 | return cons.status; // cons in payment |
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84 | } |
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85 | void stop( Cons & cons ) { |
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86 | cons.done = true; |
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87 | resume( cons ); // activate payment |
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88 | } |
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89 | int main() { |
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90 | Prod prod; |
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91 | Cons cons = { prod }; |
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92 | rand48seed( /* getpid() */ 103 ); // fixed seed for testing |
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93 | start( prod, 5, cons ); |
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94 | sout | "main stops" | endl; |
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95 | } |
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96 | |
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97 | // Local Variables: // |
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98 | // tab-width: 4 // |
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99 | // compile-command: "cfa prodcons.c" // |
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100 | // End: // |
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