暂时标记

#include <unistd.h>
#include <pthread.h>
#include <stdio.h>


pthread_key_t key;

void *thread_fun1(void *arg)
{
	printf("thread 1 start!\n");
	int a = 1;
	pthread_setspecific(key, (void *)a);
	sleep(2);
	printf("thread 1 key->data is %d\n", pthread_getspecfic(key));
}

void *thread_fun2(void *arg)
{
	printf("thread 2 start!\n");
	int a = 2;
	pthread_setspecific(key, (void *)a);
	printf("thread 2 key->data is %d\n", pthread_getspecfic(key));
}

int main()
{
	pthred_t tid1, tid2;

	pthread_key_create(&key, NULL);
	if(pthread_create(&tid1, NULL, thread_fun1, NULL))
	{
		printf("crerate new thread 1 fail\n");
		return 0;
	}
	if(pthread_create(&tid2, NULL, thread_fun2, NULL))
	{
		printf("crerate new thread 2 fail\n");
		return 0;
	}

}