Filter
Top Products
Protocols — Debugger Support
Version 1.10 12/01/02 16-19
EFI_DEBUGPORT_PROTOCOL.Poll()
Summary
Checks to see if any data is available to be read from the debugport device.
Prototype
typedef
EFI_STATUS
(EFIAPI *EFI_DEBUGPORT_POLL) (
IN EFI_DEBUGPORT_PROTOCOL *This
);
Parameters
This A pointer to the EFI_DEBUGPORT_PROTOCOL instance. Type
EFI_DEBUGPORT_PROTOCOL is defined in Section 16.3.
Description
The Poll() function checks if there is any data available to be read from the debugport device
and returns the result. No data is actually removed from the input stream. This function enables
simpler debugger design since buffering of reads is not necessary by the caller.
Status Codes Returned
EFI_SUCCESS At least one byte of data is available to be read.
EFI_NOT_READY No data is available to be read.
EFI_DEVICE_ERROR The debugport device is not functioning correctly.