[2e5ad9f] | 1 | #include <fstream> |
---|
| 2 | #include <kernel> |
---|
| 3 | #include <monitor> |
---|
| 4 | #include <thread> |
---|
| 5 | |
---|
| 6 | monitor global_t {}; |
---|
| 7 | |
---|
| 8 | global_t globalA; |
---|
| 9 | global_t globalB; |
---|
| 10 | global_t globalC; |
---|
| 11 | |
---|
| 12 | condition condAB, condAC, condBC, condABC; |
---|
| 13 | |
---|
| 14 | thread Signaler {}; |
---|
| 15 | thread WaiterAB {}; |
---|
| 16 | thread WaiterAC {}; |
---|
| 17 | thread WaiterBC {}; |
---|
| 18 | thread WaiterABC{}; |
---|
| 19 | |
---|
| 20 | int state; |
---|
| 21 | |
---|
| 22 | /* |
---|
| 23 | multi phase |
---|
| 24 | */ |
---|
| 25 | |
---|
| 26 | //---------------------------------------------------------------------------------------------------- |
---|
| 27 | // Tools |
---|
| 28 | void signal( condition * cond, global_t * mutex a, global_t * mutex b ) { |
---|
| 29 | signal( cond ); |
---|
| 30 | } |
---|
| 31 | |
---|
| 32 | void signal( condition * cond, global_t * mutex a, global_t * mutex b, global_t * mutex c ) { |
---|
| 33 | signal( cond ); |
---|
| 34 | } |
---|
| 35 | |
---|
| 36 | void wait( condition * cond, global_t * mutex a, global_t * mutex b ) { |
---|
| 37 | state++; |
---|
| 38 | sout | "Waiting" | state | endl; |
---|
| 39 | wait( cond ); |
---|
| 40 | sout | "Waking" | state | endl; |
---|
| 41 | state--; |
---|
| 42 | } |
---|
| 43 | |
---|
| 44 | void wait( condition * cond, global_t * mutex a, global_t * mutex b, global_t * mutex c ) { |
---|
| 45 | state++; |
---|
| 46 | sout | "Waiting" | state | endl; |
---|
| 47 | wait( cond ); |
---|
| 48 | sout | "Waking" | state | endl; |
---|
| 49 | state--; |
---|
| 50 | } |
---|
| 51 | |
---|
| 52 | //---------------------------------------------------------------------------------------------------- |
---|
| 53 | // Signaler |
---|
| 54 | // signals respectively AB, AC, BC, ABC |
---|
| 55 | void signalerABC( global_t * mutex a, global_t * mutex b, global_t * mutex c ) { |
---|
| 56 | sout | "Signaling ABC" | endl; |
---|
| 57 | signal( &condABC, a, b, c ); |
---|
| 58 | sout | "Signaling AB" | endl; |
---|
| 59 | signal( &condAB , a, b ); |
---|
| 60 | sout | "Signaling BC" | endl; |
---|
| 61 | signal( &condBC , b, c ); |
---|
| 62 | sout | "Signaling AC" | endl; |
---|
| 63 | signal( &condAC , a, c ); |
---|
| 64 | } |
---|
| 65 | |
---|
| 66 | void signalerAB( global_t * mutex a, global_t * mutex b, global_t * c ) { |
---|
| 67 | signalerABC(a, b, c); |
---|
| 68 | } |
---|
| 69 | |
---|
| 70 | void signalerA( global_t * mutex a, global_t * b, global_t * c ) { |
---|
| 71 | signalerAB (a, b, c); |
---|
| 72 | } |
---|
| 73 | |
---|
| 74 | void main( Signaler* this ) { |
---|
| 75 | while( state != 4 ) { yield(); } |
---|
| 76 | signalerA( &globalA, &globalB, &globalC ); |
---|
| 77 | } |
---|
| 78 | |
---|
| 79 | //---------------------------------------------------------------------------------------------------- |
---|
| 80 | // Waiter ABC |
---|
| 81 | void main( WaiterABC* this ) { |
---|
| 82 | while( state != 0 ) { yield(); } |
---|
| 83 | wait( &condABC, &globalA, &globalB, &globalC ); |
---|
| 84 | } |
---|
| 85 | |
---|
| 86 | //---------------------------------------------------------------------------------------------------- |
---|
| 87 | // Waiter AB |
---|
| 88 | void main( WaiterAB* this ) { |
---|
| 89 | while( state != 1 ) { yield(); } |
---|
| 90 | wait( &condAB , &globalA, &globalB ); |
---|
| 91 | } |
---|
| 92 | |
---|
| 93 | //---------------------------------------------------------------------------------------------------- |
---|
| 94 | // Waiter AC |
---|
| 95 | void main( WaiterAC* this ) { |
---|
| 96 | while( state != 2 ) { yield(); } |
---|
| 97 | wait( &condAC , &globalA, &globalC ); |
---|
| 98 | } |
---|
| 99 | |
---|
| 100 | //---------------------------------------------------------------------------------------------------- |
---|
| 101 | // Waiter BC |
---|
| 102 | void main( WaiterBC* this ) { |
---|
| 103 | while( state != 3 ) { yield(); } |
---|
| 104 | wait( &condBC , &globalB, &globalC ); |
---|
| 105 | } |
---|
| 106 | |
---|
| 107 | //---------------------------------------------------------------------------------------------------- |
---|
| 108 | // Main |
---|
| 109 | int main(int argc, char* argv[]) { |
---|
| 110 | state = 0; |
---|
| 111 | processor p; |
---|
| 112 | { |
---|
| 113 | WaiterABC a; |
---|
| 114 | WaiterAB b; |
---|
| 115 | WaiterBC c; |
---|
| 116 | WaiterAC d; |
---|
| 117 | Signaler e; |
---|
| 118 | } |
---|
| 119 | } |
---|