Portable operating environment for information devices

Details Portable operating environment for information devices Portable operating environment for information devices

2005-08-23

2005-08-23

Vo, Ted T. (Department: 2122)

Data processing: software development, installation, and managem

Software program development tool

Managing software components

C717S108000, C717S116000, C717S127000, C707S793000, C709S228000

Reexamination Certificate

active

06934933

ABSTRACT:
A software program for use on an embedded computing device includes an operating system layer, an application framework, and a programming environment. the programming environment includes a contention locking scheme for setting light object locks, which are handled in user space, and heavy object locks, which are handled at the system level. The contention locking scheme is configured to set a light object lock on an initially unlocked object when a first thread attempts to lock the object, and to maintain a light lock on the object when a nested intra-thread lock is attempted by the first thread.

REFERENCES:
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patent: 6314563 (2001-11-01), Agesen et al.
patent: 6754898 (2004-06-01), Zhang et al.
patent: 6792601 (2004-09-01), Dimpsey et al.
Bacon et al., “Thin Locks: Featherweight Synchronization for Java”, ACM, pp.: 258-268, 1998.
Onodera, et al., “A study of Locking Objects with Bimodal Fields”, ACM, pp.: 223-236, Oct. 1999.

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