MPE/iX Intrinsics Reference Manual (32650-90875)

Chapter 4 47

Command Deﬁnitions (ABORTSESS - FCLOSE)

ACTIVATE

Operation Notes

A newly created process can only be activated by its parent. A suspended process can be

reactivated by its parent, or any of its children, as speciﬁed in the

allow

parameter of the

ACTIVATE and SUSPEND intrinsics. When a process is activated, it runs until it is either

suspended or deleted.

The ACTIVATE intrinsic aborts the calling process (and possibly the entire job/session) if a

request to activate the parent results in the activation of the root CI or a system process.

The abort error messages associated with these situations are:

ACTIVATION OF SYSTEM PROCESS NOT ALLOWED

(ACTIVATE ERROR 20)

ACTIVATION OF MAIN PROCESS NOT ALLOWED

(ACTIVATE ERROR 21)

Condition Codes

CCE (2) Request granted. The called process is activated. The calling process is

suspended if you speciﬁed

allow

CCG (0) Request granted. The called process is already active. The calling process

is suspended if you speciﬁed

allow

CCL (1) Request denied. The called process was not expecting activation by this

calling process, an illegal

parameter was speciﬁed, or the

allow

parameter was speciﬁed improperly.

Related Information

Intrinsics CREATE, SUSPEND

Manuals Process Management Programmer's Guide