#include <stdio.h>
#include <unistd.h>
#include <pthread.h>
int tickets=1000;
pthread_mutex_t mutex;
void* sellticket(void*arg){
//加锁
while(1){
pthread_mutex_lock(&mutex);
if(tickets>0){
usleep(6000);
printf("%ld正在卖%d张门票\n",pthread_self(),tickets);
tickets --;
}else{
pthread_mutex_unlock(&mutex);
break;
}
pthread_mutex_unlock(&mutex);
}
return NULL;
}
int main(){
//创建一个互斥量
pthread_mutex_init(&mutex,NULL);
//创建3个子线程
pthread_t tid1,tid2,tid3;
pthread_create(&tid1,NULL,sellticket,NULL);
pthread_create(&tid2,NULL,sellticket,NULL);
pthread_create(&tid3,NULL,sellticket,NULL);
//回收子线程
pthread_join(tid1,NULL);
pthread_join(tid2,NULL);
pthread_join(tid3,NULL);
pthread_exit(NULL);//退出主线程
//设置线程分离
//pthread_detach(tid1);
//pthread_detach(tid2);
//pthread_detach(tid3);
pthread_mutex_destroy(&mutex);
return 0;
}
