Patent
1996-05-07
1999-03-09
Oberley, Alvin E.
G06F 1310
Patent
active
058812857
ABSTRACT:
Association of a physical driver object with its logical contents in a logical driver object by identifying the logical driver object and using a non-operating system component to cause recreation of the physical driver object. A handle and a memory address of a logical driver object are obtained and the handle is locked to prevent its movement in memory. A clone of the logical driver object is created, whereupon the contents of the logical driver object and the contents of the clone are swapped. The clone is then deleted. Subsequent reselection of the logical driver object into a device context results in an observable recreation of a corresponding physical driver object.
REFERENCES:
patent: 5412798 (1995-05-01), Garney
patent: 5519831 (1996-05-01), Holzhammer
patent: 5774640 (1998-06-01), Kurio
Asche, Ruediger R., "The Little Device Driver Writer", Microsoft Developer CD-ROM, pp. (26) Feb. 1994.
(no author given), "Windows 95 Graphics Device Interface", Microsoft Developer CD-ROM, pp. (4) 1996.
Itoh et al., "Concurrent Object-Oriented Device Driver Programming in Apertos Operating System", Keio University Dept. of Computer Science, Japan, pp. (8) Aug. 1994.
Courtenay III St. John
Intel Corporation
Murray William H.
Oberley Alvin E.
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