How do I create a global variable that is thread-specific in C using POSIX threads?

Question

I am learning about POSIX threads and I have come to the section on Thread Specific Data. The book does an excellent example using a file descriptor. However, I wanted to do the

Answer 1

In general, what you're looking for is "thread local storage". Here are a few links:

• http://publib.boulder.ibm.com/infocenter/iseries/v7r1m0/index.jsp?topic=%2Frzahw%2Frzahwex1.htm

• http://en.wikipedia.org/wiki/Thread-local_storage

Choosing pthread_getspecific() is correct. Here's a good example:

• http://publib.boulder.ibm.com/infocenter/iseries/v7r1m0/index.jsp?topic=%2Fapis%2Fusers_34.htm

Please review the above example: I think it will point you to the problem ... or suggest a good alternative.

IMHO...