"ThreadLocal" is also available in LinuxC"

"ThreadLocal"-general Linux technology-Linux programming and kernel information is also available in LinuxC. The following is a detailed description. Now I am reading a book on Linux development and have come into contact with multi-thread development. I was surprised to find that I use C to Write multi-thread programs, and there are also threads.

The concept of internal variables, even called interfaces, is very similar to ThreadLocal in Java.

1. extern int pthread_key_create (pthread_key_t * _ key, void (* _ destr_function) (void *)));

Use this method to create a Key in the thread and bind a function to reclaim the space of the Key pair at the end of the thread.

2. extern int pthread_setspecific _ P (pthread_key_t _ key ,__ const void * _ pointer ));

Bind thread data with a key

3. extern void * pthread_getspecific _ P (pthread_key_t _ key ));

Obtain thread data

4. pthread_key_delete

Delete Key and corresponding thread data

It seems that the programming languages are the same.