SetPriority

Set process priority

Declaration

Source position: oldlinux.pp line 1358

Description

SetPriority sets the priority with which a process is running. Which process(es) is determined by the Which and Who variables. Which can be one of the pre-defined constants:

Prio_Process

Who is interpreted as process ID

Prio_PGrp

Who is interpreted as process group ID

Prio_User

Who is interpreted as user ID

Prio is a value in the range -20 to 20.

For an example, see Nice.

Errors

Error checking must be done on LinuxError, since a priority can be negative.

sys_esrch

No process found using which and who.

sys_einval

Which was not one of Prio_Process, Prio_Grp or Prio_User.

sys_eperm

A process was found, but neither its effective or real user ID match the effective user ID of the caller.

sys_eacces

A non-superuser tried to a priority increase.

See also