목차

Dining Philosopher Problem를 세마포를 이용하여 해결한 프로그램 소스 코드입니다.

본문내용

#include < stdio.h >
#include < stdlib.h > /* for calloc() and exit() */

#define N 5 /* number of philosophers */
#define Busy_Eating 1
#define Busy_Thinking 1
#define Left(p) (p) /* chopstick macros */
#define Right(p) (((p) + 1) % N)

typedef int * semaphore;

semaphore chopstick[N]; /* global array */

int fork(void);
semaphore make_semaphore(void);
void philosopher(int me);
void pick_up(int me);
int pipe(int pd[2]);
void put_down(int me);
int read(int fd, void *buf, unsigned len);
void signal(semaphore s);
void sleep(unsigned seconds);
void wait(semaphore s);
int write(int fd, void *buf, unsigned len);