Support for NT Subsystems (contd.)

But win32 and OS/2 processes are always created with a thread... so the subsystem issues one more request to the NT executive to instantiate and return a handle for a thread. After this the process and thread handle are returned to the application program.

NT allows subsytem to specify the parent of the new process for inheriting its attributes.

NT has no predetermined relationship among procs. Both OS/2, win32 and unix have parent -child relationship. This is solved by using “handles”.

But win32 and OS/2 processes are always created with a thread... so the subsystem issues one more request to the NT executive to instantiate and return a handle for a thread. After this the process and thread handle are returned to the application program.