Other Process State

The preceding subsections describe how Topaz treats many of the mutable state components of a UNIX process. For completeness, here is how the remaining components are treated.

User identity.

Constant/parameterized. Each process has a user identity associated with it. Super-user programs, usually servers, acting on behalf of many users may pass an additional parameter on each call giving the user identity on whose behalf they are acting.    

UMask.

Client-synchronized. (The umask is used to set the access control bits when a file is created.)  

Process Group.

Constant.  

Control Terminal.

Constant.

Priority.

Thread-dependent.