Handling Signals in an Activity Process

Handling Signals in an Activity Process

A Frame Scheduler can send a signal to an activity process when the process is removed from any queue using frs_premove() (see "Managing Activity Processes"). The scheduler can also send a signal to an activity process when it is removed from the last or only minor frame to which it was enqueued (at which time a process is returned to normal IRIX scheduling).

In order to have these signals sent, the FRS controller must set nonzero signal numbers for them, as discussed in the following topic, "Setting Frame Scheduler Signals."