求在ubuntu下用pthread实现生产者和消费者的程序？

现代操作系统（英文）135页上的程序
编译的时候记得加上 -lpthread 即
gcc ProducerConsumer.c -lpthread
#include
#include
#define MAX 10000000
pthread_mutex_t the_mutex;
pthread_cond_t condc,condp;
int buffer=0;

void *producer(void *ptr)
{
int i;
for(i=1;i<=MAX;i++)
{
pthread_mutex_lock(&the_mutex);
while(buffer!=0)pthread_cond_wait(&condp,&the_mutex);
buffer=i;
pthread_cond_signal(&condc);
pthread_mutex_unlock(&the_mutex);
}
pthread_exit(0);
}

void *consumer(void *ptr)
{
int i;
for(i=1;i<=MAX;i++)
{
pthread_mutex_lock(&the_mutex);
while(buffer==0)pthread_cond_wait(&condc,&the_mutex);
buffer=0;
pthread_cond_signal(&condp);
pthread_mutex_unlock(&the_mutex);
}
pthread_exit(0);
}

int main(int argc,char **argv)
{
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);
}

这个问题不难，联系我吧。