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Semaphores
- A data structure abstraction for lock
class semaphore {
private: int s;
public:
void wait(void) {while (s < 0) ;
s--;
}
void signal(void) {
s++;
}
} |
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Mutual Exclusion Using Semaphore
semaphore mutex;
:
mutex.wait();
// Critical Section
mutex.signal();
// Remainder Section
: |
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