#include <stdio.h>
#include <pthread.h>
#include <stdlib.h>
#define MAX 1000000000
pthread_mutex_t the_mutex;
pthread_cond_t condc,condp;
int buffer = 0;// 缓冲区

void *Producer(void *ptr)
{
    for(int i = 0;i<=MAX;i++)
    {
        pthread_mutex_lock(&the_mutex);
        while(buffer!=0)pthread_cond_wait(&condp,&the_mutex);
        buffer = i;
        printf("Producer %d",buffer);
        pthread_cond_signal(&condc);//唤醒消费者
        pthread_mutex_unlock(&the_mutex);
    }
    pthread_exit(0);
}
void *Consumer(void *ptr)
{
    for(int i =0 ;i<=MAX;i++)
    {
        pthread_mutex_lock(&the_mutex);
        while(buffer ==0 ) pthread_cond_wait(&condc,&the_mutex);
        buffer = 0;
        printf("Consumer %d",buffer);
        pthread_cond_signal(&condp);
        pthread_mutex_unlock(&the_mutex);
    }
    pthread_exit(0);
}

int main(void)
{
    pthread_t pro,con;
    pthread_mutex_init(&the_mutex,0);
    pthread_cond_init(&condc,0);
    pthread_cond_init(&condp,0);
    pthread_create(&con,0,Consumer,0);
    pthread_create(&pro,0,Producer,0);
    pthread_join(pro,0);
    pthread_join(con,0);
    pthread_cond_destroy(&condc);
    pthread_cond_destroy(&condp);
    pthread_mutex_destroy(&the_mutex);
}