在Linux下实现3个并发进程的誊抄

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
#include <errno.h>
#include <sys/ipc.h>
#include <semaphore.h>
#include <fcntl.h>
#include "queue.h"
#include "const.h"
#define N 10

time_t end_time;
sem_t mutex,full,empty,mutex2,full2,empty2;
Queue *qt,qt2; /*缓冲区*/
ElemType p;

void consumer(void *arg);
void productor(void *arg);

int main(int argc, char *argv[])
{
pthread_t id1,id2,id3;
    int ret;
end_time = time(NULL)+30;
qt = InitQueue();
qt2 = InitQueue();
p.lNumber = 1000;
    ret=sem_init(&mutex,0,1);        /*初使化互斥信号量为１*/
    ret=sem_init(&empty,0,N);        /*初使化empty信号量为N*/