[f80ab45] | 1 | #include <fstream> |
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[5ea06d6] | 2 | #include <kernel> |
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| 3 | #include <monitor> |
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| 4 | #include <thread> |
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| 5 | |
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[e1c1829] | 6 | #ifndef N |
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[0322865c] | 7 | #define N 10_000 |
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[e1c1829] | 8 | #endif |
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[5ea06d6] | 9 | |
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[102a58b] | 10 | enum state_t { WAIT, SIGNAL, BARGE }; |
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| 11 | |
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| 12 | monitor global_t {}; |
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| 13 | global_t mut; |
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| 14 | |
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| 15 | monitor global_data_t; |
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[2afec66] | 16 | void ?{}( global_data_t & this ); |
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| 17 | void ^?{} ( global_data_t & this ); |
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[102a58b] | 18 | |
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| 19 | monitor global_data_t { |
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| 20 | int counter; |
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| 21 | state_t state; |
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| 22 | } data; |
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[5ea06d6] | 23 | |
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| 24 | condition cond; |
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| 25 | |
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[102a58b] | 26 | volatile bool all_done; |
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[5ea06d6] | 27 | |
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[2afec66] | 28 | void ?{}( global_data_t & this ) { |
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| 29 | this.counter == 0; |
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| 30 | this.state = BARGE; |
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[5ea06d6] | 31 | } |
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| 32 | |
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[2afec66] | 33 | void ^?{} ( global_data_t & this ) {} |
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[5ea06d6] | 34 | |
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[102a58b] | 35 | //------------------------------------------------------------------------------ |
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| 36 | // Barging logic |
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| 37 | void barge( global_data_t * mutex d ) { |
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| 38 | d->state = BARGE; |
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[5ea06d6] | 39 | } |
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| 40 | |
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[102a58b] | 41 | thread Barger {}; |
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[5ea06d6] | 42 | |
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[102a58b] | 43 | void main( Barger * this ) { |
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[0322865c] | 44 | while( !all_done ) { |
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[102a58b] | 45 | barge( &data ); |
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[0322865c] | 46 | yield(); |
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[102a58b] | 47 | } |
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[5ea06d6] | 48 | } |
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| 49 | |
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[102a58b] | 50 | //------------------------------------------------------------------------------ |
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| 51 | // Waiting logic |
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| 52 | bool wait( global_t * mutex m, global_data_t * mutex d ) { |
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| 53 | wait( &cond ); |
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| 54 | if( d->state != SIGNAL ) { |
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[0322865c] | 55 | sout | "ERROR barging!" | endl; |
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[102a58b] | 56 | } |
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| 57 | |
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| 58 | d->counter++; |
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| 59 | |
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| 60 | if( (d->counter % 1000) == 0 ) sout | d->counter | endl; |
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| 61 | |
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| 62 | return d->counter < N; |
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[5ea06d6] | 63 | } |
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| 64 | |
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[102a58b] | 65 | thread Waiter {}; |
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| 66 | |
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| 67 | void main( Waiter * this ) { |
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| 68 | while( wait( &mut, &data ) ) { yield(); } |
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| 69 | } |
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| 70 | |
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| 71 | |
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| 72 | //------------------------------------------------------------------------------ |
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| 73 | // Signalling logic |
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| 74 | void signal( condition * cond, global_t * mutex a, global_data_t * mutex b ) { |
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| 75 | b->state = SIGNAL; |
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| 76 | signal( cond ); |
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| 77 | } |
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| 78 | |
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| 79 | void logic( global_t * mutex a ) { |
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| 80 | signal( &cond, a, &data ); |
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| 81 | |
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[4c5b972] | 82 | yield( (unsigned)rand48() % 10 ); |
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[5ea06d6] | 83 | |
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[102a58b] | 84 | //This is technically a mutual exclusion violation but the mutex monitor protects us |
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| 85 | bool running = data.counter < N && data.counter > 0; |
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| 86 | if( data.state != SIGNAL && running ) { |
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[0322865c] | 87 | sout | "ERROR Eager signal" | data.state | endl; |
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[102a58b] | 88 | } |
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[5ea06d6] | 89 | } |
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| 90 | |
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[102a58b] | 91 | thread Signaller {}; |
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| 92 | |
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| 93 | void main( Signaller * this ) { |
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[0322865c] | 94 | while( !all_done ) { |
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[102a58b] | 95 | logic( &mut ); |
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[0322865c] | 96 | yield(); |
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[102a58b] | 97 | } |
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| 98 | } |
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| 99 | |
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| 100 | //------------------------------------------------------------------------------ |
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| 101 | // Main loop |
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[5ea06d6] | 102 | int main(int argc, char* argv[]) { |
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[102a58b] | 103 | all_done = false; |
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[5ea06d6] | 104 | processor p; |
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| 105 | { |
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[102a58b] | 106 | Signaller s; |
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| 107 | Barger b[17]; |
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| 108 | { |
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| 109 | Waiter w[4]; |
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| 110 | } |
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| 111 | sout | "All waiter done" | endl; |
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| 112 | all_done = true; |
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[0322865c] | 113 | } |
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[2afec66] | 114 | } |
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