Information processing apparatus for start-up of an...

Details Information processing apparatus for start-up of an... Information processing apparatus for start-up of an...

2007-01-30

2007-01-30

Cao, Chun (Department: 2115)

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

Reexamination Certificate

active

10745513

ABSTRACT:
To start up an operating system (OS), CPU performs initializations in three modes: The three modes include a first I/O initialization (Early init) (132) which is to be done serially when no threads are yet usable, without any advanced technique and with a long wait time until a next operation can be made; a second I/O initialization (136) which is to be done when threads are usable, in a plurality of steps parallelized with each other using the usable threads according to the dependency relation between devices to be initialized and with synchronization between the steps each by a barrier; and a third I/O initialization (Lazy init) (140) in which remaining initializations are done in parallel with each other using the threads commensurately to a user process when the user process becomes executable. The present invention is applicable to home-use electric or electronic appliances.

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