Linux C多线程实现生产者消费者

今天学习了用Linux　Ｃ进行线程的同步，实现类似生产者消费者的问题。下面我就来分享我的代码

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#include<stdio.h> #include<pthread.h> #include<stdlib.h> #include<unistd.h>     pthread_t tid1; pthread_t tid2; pthread_cond_t cond_id; pthread_mutex_t  mutex_id; int number = 0; int i = 0;   void * thread_printA() {     while(i<100)     {         pthread_mutex_lock(&mutex_id);         if(number<0)         {             pthread_cond_wait(&cond_id,&mutex_id);         }         number--;         printf("A");         i++;               pthread_cond_signal(&cond_id);         pthread_mutex_unlock(&mutex_id);     } }   void * thread_printB() {     while(i<100)     {         pthread_mutex_lock(&mutex_id);         if(number>=0)         {             pthread_cond_wait(&cond_id,&mutex_id);         }         number++;         printf("B");         i++;         pthread_cond_signal(&cond_id);         pthread_mutex_unlock(&mutex_id);     } }   void main() {     pthread_create(&tid1,NULL,thread_printA,NULL);     pthread_create(&tid2,NULL,thread_printB,NULL);     pthread_join(tid1,NULL);     pthread_join(tid2,NULL); }