Method and apparatus for enhancing a multi-stage hibernate and resume process

摘要

Before hibernating a computing device (102), system software components (116) are notified of an upcoming hibernation process. The notifications are conveyed through an application program interface (API) (114). At least a portion of the system software components (116) can perform one or more pre-hibernation activities to place that system software component (116) in a ready-to-resume state. Each system software component indicates when it is ready for hibernation. Responsive to receiving the indication from each of the system software components (116), the hibernation process can complete. The completed hibernation process creates a snapshot (122) in nonvolatile memory. The snapshot (122) saves state information (124) for each of the system software components (116). The state information (124) is for the ready-to-resume state of the system software components (116). The computing device (102) can be restored after hibernation using a resume process (130), which reads the state (124) information from the snapshot (122).

主权项

1. A method for hibernating and resuming system software comprising:
before hibernating a computing device, notifying, via a processor of the computing device, system software components of an upcoming hibernation process; at least a portion of the system software components performing, via the processor, a pre-hibernation activity to place that system software component in a ready-to-resume state; each system software component, indicating, via the processor, that that system software component is ready for hibernation, wherein the hibernation process is not completed to create a snapshot of the system software components in the ready-to-resume state until each of the system software components has indicated that it is ready for hibernation; creating, via the processor, the snapshot in nonvolatile memory; subsequently initializing, via the processor, a resume process from the created snapshot; and during the resume process, controllably varying, via the processor, a resume timing sequence for the system software components between a first and second subset of the system software components, said timing sequence referring to a speed with which the system software components in the first subset of the system software components corresponding to first end-user functionality are restored from the ready-to-resume state relative to the system software components in the second subset of the system software components corresponding to second end-user functionality; wherein the ready-to-resume state is a state in which initialization operations are executed upon resume with respect to external components of the computing device; and wherein for at least one of the system software components, the ready-to-resume state is a state existing immediately before a variable linked to an external mechanical input component is determined, whereby upon resuming the at least one system software component checks the mechanical input to determine a value of the variable based on a current state of the mechanical input upon resuming and before the variable is utilized or is attempted to be utilized by that system software component.