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This interface
is obsoleted by setpriority(2)
. The function obtains the scheduling priority
of the process from the system and sets it to the priority value specified
in The priority is a value in the range -20 to 20. The default priority
is 0; lower priorities cause more favorable scheduling. Only the super-user
may lower priorities. Children inherit the priority of their parent processes
via
A syscall appeared in
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