Dutor

#include <iostream>
#include <pthread.h>
 
using namespace std;
 
pthread_mutex_t mutex; //~ 创建互斥锁mutex
int share = 0; //~ 共享数据
 
//~ 线程入口
void * thread_function(void *arg)
{
	const int N = 1000000;
	for(int i = 0; i < N; ++i)
	{
		//~ 访问共享数据
		pthread_mutex_lock(&mutex);
		share++;
		pthread_mutex_unlock(&mutex);
	}
}
int
main()
{
	pthread_mutex_init(&mutex, NULL); //~ 初始化互斥锁mutex
	pthread_t thread_id;
	void *exit_status;
	pthread_create(&thread_id, NULL, thread_function, NULL); //~ 创建新线程
	for(int i = 0; i < 10; ++i)
	{
		usleep(10000); //~ 延时10ms
		//~ 访问共享数据
		pthread_mutex_lock(&mutex);
		cout<<share<<endl;
		pthread_mutex_unlock(&mutex);
	}
	pthread_join(thread_id, &exit_status); //~ 等待线程结束
	pthread_mutex_destroy(&mutex); //~ 销毁互斥锁
	return 0;
}