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 | } |
---|