[HP-UX 11.0]What are the purposes for those "__" variables defined in

grace_limi

In header files under the directory /usr/include and its sub-directories, there are many variables defined with \"__\" prefixxed. For example, in /usr/include/sys/msg.h,
there are variables defined, like __msg, __cplusplus, and so on.

Who can tell me what purposes are those \"__\" variables for?

Yong Huang

最初由 grace_limi 发布
[B]In header files under the directory /usr/include and its sub-directories, there are many variables defined with \"__\" prefixxed. For example, in /usr/include/sys/msg.h,
there are variables defined, like __msg, __cplusplus, and so on.

Who can tell me what purposes are those \"__\" variables for? [/B]

I believe that convention is to signify tokens used by the kernel.

Yong Huang