Checkevent() - Intel Extensible Firmware Interface Specification

Extensible Firmware Interface Specification
3.1.5

CheckEvent()

Summary
Checks whether an event is in the signaled state.
Prototype
EFI_STATUS
CheckEvent (
IN EFI_EVENT
);
Parameters
Event
Description
The
CheckEvent()
of type EVT_NOTIFY_SIGNAL, then
type EFI_NOTIFY_WAIT, there are three possibilities:
•
If is in the signaled state, it is cleared and
Event
•
If is not in the signaled state and has no notification function,
Event
returned.
•
If is not in the signaled state but does have a notification function, the function is
Event
executed. If that causes
it does not cause
Status Codes Returned
EFI_SUCCESS
EFI_NOT_READY
36
Event
The event to check. Type
function checks to see whether
EFI_INVALID_PARAMETER
to be signaled, it is cleared and
Event
to be signaled,
Event EFI_NOT_READY
The event is in the signaled state.
The event is not in the signaled state.
12/12/00
is defined in Section 3.1.1.
EFI_EVENT
is in the signaled state. If
Event
is returned. If
is returned.
EFI_SUCCESS
EFI_NOT_READY
EFI_SUCCESS
is returned.
is
Event
is of
Event
is
is returned; if
Version 1.02