[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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[303406a] | 6 | #include <time.h> |
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| 7 | |
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[cd99ef1] | 8 | static const unsigned long N = 10_000ul; |
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| 9 | |
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| 10 | #ifndef PREEMPTION_RATE |
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| 11 | #define PREEMPTION_RATE 10_000ul |
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[e1c1829] | 12 | #endif |
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[5ea06d6] | 13 | |
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[cd99ef1] | 14 | unsigned int default_preemption() { |
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| 15 | return PREEMPTION_RATE; |
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| 16 | } |
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| 17 | |
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[102a58b] | 18 | enum state_t { WAIT, SIGNAL, BARGE }; |
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| 19 | |
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| 20 | monitor global_t {}; |
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| 21 | global_t mut; |
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| 22 | |
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| 23 | monitor global_data_t; |
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[2afec66] | 24 | void ?{}( global_data_t & this ); |
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| 25 | void ^?{} ( global_data_t & this ); |
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[102a58b] | 26 | |
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| 27 | monitor global_data_t { |
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| 28 | int counter; |
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| 29 | state_t state; |
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| 30 | } data; |
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[5ea06d6] | 31 | |
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| 32 | condition cond; |
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| 33 | |
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[102a58b] | 34 | volatile bool all_done; |
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[5ea06d6] | 35 | |
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[2afec66] | 36 | void ?{}( global_data_t & this ) { |
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| 37 | this.counter == 0; |
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| 38 | this.state = BARGE; |
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[5ea06d6] | 39 | } |
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| 40 | |
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[2afec66] | 41 | void ^?{} ( global_data_t & this ) {} |
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[5ea06d6] | 42 | |
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[102a58b] | 43 | //------------------------------------------------------------------------------ |
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| 44 | // Barging logic |
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[83a071f9] | 45 | void barge( global_data_t & mutex d ) { |
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| 46 | d.state = BARGE; |
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[5ea06d6] | 47 | } |
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| 48 | |
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[102a58b] | 49 | thread Barger {}; |
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[5ea06d6] | 50 | |
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[83a071f9] | 51 | void main( Barger & this ) { |
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[0322865c] | 52 | while( !all_done ) { |
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[83a071f9] | 53 | barge( data ); |
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[0322865c] | 54 | yield(); |
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[102a58b] | 55 | } |
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[5ea06d6] | 56 | } |
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| 57 | |
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[102a58b] | 58 | //------------------------------------------------------------------------------ |
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| 59 | // Waiting logic |
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[83a071f9] | 60 | bool wait( global_t & mutex m, global_data_t & mutex d ) { |
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[4cedd9f] | 61 | wait( cond ); |
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[83a071f9] | 62 | if( d.state != SIGNAL ) { |
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[0322865c] | 63 | sout | "ERROR barging!" | endl; |
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[102a58b] | 64 | } |
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| 65 | |
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[83a071f9] | 66 | d.counter++; |
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[102a58b] | 67 | |
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[83a071f9] | 68 | if( (d.counter % 1000) == 0 ) sout | d.counter | endl; |
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[102a58b] | 69 | |
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[83a071f9] | 70 | return d.counter < N; |
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[5ea06d6] | 71 | } |
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| 72 | |
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[102a58b] | 73 | thread Waiter {}; |
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| 74 | |
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[83a071f9] | 75 | void main( Waiter & this ) { |
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| 76 | while( wait( mut, data ) ) { yield(); } |
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[102a58b] | 77 | } |
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| 78 | |
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| 79 | |
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| 80 | //------------------------------------------------------------------------------ |
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| 81 | // Signalling logic |
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[4cedd9f] | 82 | void signal( condition & cond, global_t & mutex a, global_data_t & mutex b ) { |
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[83a071f9] | 83 | b.state = SIGNAL; |
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[102a58b] | 84 | signal( cond ); |
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| 85 | } |
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| 86 | |
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[83a071f9] | 87 | void logic( global_t & mutex a ) { |
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[4cedd9f] | 88 | signal( cond, a, data ); |
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[102a58b] | 89 | |
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[e1e8408] | 90 | yield( rand48(10) ); |
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[5ea06d6] | 91 | |
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[102a58b] | 92 | //This is technically a mutual exclusion violation but the mutex monitor protects us |
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| 93 | bool running = data.counter < N && data.counter > 0; |
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| 94 | if( data.state != SIGNAL && running ) { |
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[0322865c] | 95 | sout | "ERROR Eager signal" | data.state | endl; |
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[102a58b] | 96 | } |
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[5ea06d6] | 97 | } |
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| 98 | |
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[102a58b] | 99 | thread Signaller {}; |
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| 100 | |
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[83a071f9] | 101 | void main( Signaller & this ) { |
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[0322865c] | 102 | while( !all_done ) { |
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[83a071f9] | 103 | logic( mut ); |
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[0322865c] | 104 | yield(); |
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[102a58b] | 105 | } |
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| 106 | } |
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| 107 | |
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| 108 | //------------------------------------------------------------------------------ |
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| 109 | // Main loop |
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[5ea06d6] | 110 | int main(int argc, char* argv[]) { |
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[303406a] | 111 | rand48seed( time( NULL ) ); |
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[102a58b] | 112 | all_done = false; |
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[5ea06d6] | 113 | processor p; |
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| 114 | { |
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[102a58b] | 115 | Signaller s; |
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| 116 | Barger b[17]; |
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| 117 | { |
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| 118 | Waiter w[4]; |
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| 119 | } |
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| 120 | sout | "All waiter done" | endl; |
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| 121 | all_done = true; |
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[0322865c] | 122 | } |
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[2afec66] | 123 | } |
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