Recovering from device failure

Details Recovering from device failure Recovering from device failure

2005-04-26

2005-04-26

Bonzo, Bryce P. (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C719S323000

Reexamination Certificate

active

06886112

ABSTRACT:
Methods, systems, and computer program products for resource recovery. A region of code can be considered untrusted. To catch problems in the untrusted region, entry points are wrapped with exception logic for processing exceptions raised within the untrusted region. Until an exception has been raised within the untrusted region, instructions corresponding to the entry points may be executed. However, once an exception has been raised within the untrusted region, further access to the untrusted code is prevented. A time element may be recorded for indicating execution time within an untrusted display hardware driver. Once a threshold execution time is reached, indicating a graphics processor hang, driver execution stops and an exception raised. When execution continues, the exception is processed based on the exception logic. Updating the display hardware then occurs without using the graphics processor. The display hardware may notify a user that the graphic processor is not functioning.

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