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| import Foundation | |
| func min(a: Int, b: Int) -> Int { | |
| return a < b ? a : b | |
| } | |
| func adjacentSpots(board: [[Int]], start: [Int]) -> [[Int]] { | |
| let i = start[0] | |
| let j = start[1] | |
| var ret: [[Int]] = [] |
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| task type Semaphore is | |
| entry Init (Initial_Capacity: in Int); | |
| entry Wait; | |
| entry Signal; | |
| end | |
| task body Semaphore is | |
| Remaining_Capacity: Int; | |
| begin | |
| accept Init (Initial_Capacity: in Int) do | |
| Remaining_Capacity := Initial_Capacity; |
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| task Readers_Writers is | |
| procedure Reader (Read: out Int); | |
| entry Writer (Written: in Int); | |
| entry Begin_Reading; | |
| entry Finish_Reading; | |
| end | |
| procedure Reader (Read: out Int) is | |
| begin | |
| Begin_Reading; | |
| Read := Shared; |
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| task Readers_Writers is | |
| procedure Reader (Read: out Int); | |
| entry Writer (Written: in Int); | |
| entry Begin_Reading; | |
| entry Finish_Reading; | |
| end; | |
| procedure Reader (Read: out Int) is | |
| begin | |
| Begin_Reading; |
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| task Buffer is | |
| entry Insert (In_Val: in T); | |
| entry Extract (Out_Val: out T); | |
| end | |
| task body Buffer is | |
| Data: Array 0..N-1 of Int; | |
| Top: Int; | |
| Bottom: Int; | |
| Length: Int; | |
| x: T; |
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| task Alice is | |
| end | |
| task body Alice is | |
| begin | |
| loop | |
| Yard.Request; | |
| Walk_Dog; | |
| Yard.Release; | |
| end loop | |
| end Alice; |
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| Philosophers: Array 0..4 of Philosopher; | |
| task type Philosopher is | |
| end | |
| task body Philosopher is | |
| begin | |
| loop | |
| Table.Enter | |
| Chopsticks.Request | |
| Chopsticks.Request |
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| Chopsticks: Array 0..4 of Chopstick; | |
| Philosophers: Array 0..4 of Philosopher; | |
| task type Philosopher is | |
| end | |
| task body Philosopher is | |
| Left: Int; | |
| Enumerator.Gimme_My_Number(Left); | |
| Right: Int := (Left + 1) mod 5; | |
| begin |
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| import UIKit | |
| class Condition { | |
| var waiting: Bool | |
| init() { | |
| waiting = false | |
| } | |
| func wait() { |
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| import UIKit | |
| class Semaphore { | |
| var n: Int | |
| init(n: Int) { | |
| self.n = n | |
| } | |
| func P() { |