UNIX环境高级编程：线程私有数据

运行结果：

[cpp] view plaincopyprint

01.huangcheng@ubuntu:~$ ./a.out

02.Initializing key

03.thread 2 set tsd value at 0x8fb7520

04.thread 2 starting......

05.thread 1 set tsd value at 0x8fb7530

06.thread 1 starting......

07.thread 2 done......

08.thread 1 done......

huangcheng@ubuntu:~$ ./a.out

Initializing key

thread 2 set tsd value at 0x8fb7520

thread 2 starting......

thread 1 set tsd value at 0x8fb7530

thread 1 starting......

thread 2 done......

thread 1 done......

示例代码3：

[cpp] view plaincopyprint

01.#include <stdio.h>

02.#include <stdlib.h>

03.#include <pthread.h>

04.

05.pthread_key_t key;

06.

07.struct test_struct {

08. int i;

09. float k;

10.};

11.

12.

13.void *child1 (void *arg)

14.{

15. struct test_struct struct_data;

16.

17. struct_data.i = 10;

18. struct_data.k = 3.1415;

19.

20. pthread_setspecific (key, &struct_data);

21. printf ("结构体struct_data的地址为 0x%pn", &(struct_data));

22. printf ("child1 中 pthread_getspecific(key)返回的指针为:0x%pn", (struct test_struct *)pthread_getspecific(key));

23.

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