Intel Extensible Firmware Interface - Manual (Page 108)

Extensible Firmware Interface Specification
5-10 12/01/02 Version 1.10
SignalEvent()
Summary
Signals an event.
Prototype
EFI_STATUS
SignalEvent (
IN EFI_EVENT Event
);
Parameters
Event The event to signal. Type EFI_EVENT is defined in the
CreateEvent() function description.
Description
The supplied Event is signaled and, if the event has a signal notification function, it is scheduled
to be invoked at the event’s notification task priority level. SignalEvent() may be invoked
from any task priority level.
Status Codes Returned
EFI_SUCCESS The event was signaled.