Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output data buffering
Patent
1996-12-02
1999-08-03
Maung, Zarni
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output data buffering
710 22, 709237, G06F 1328
Patent
active
059319259
ABSTRACT:
A multimedia datastreaming system includes one of a plurality of differing pre-existing file systems each supporting a set of zero copy function interfaces. A method is provided for supporting the zero copy function of a datastream file with the pre-existing file system. A general purpose file system interface is established to the pre-existing file systems. The general purpose file system interface is then invoked to affect zero copy transfer of the datastream from a producer module to a consumer module. An initial prefetch of data associated with the datastream file is initiated in response to an I/O command issued from a multimedia file system daemon, such prefetch being from mass storage to a buffer in shared memory in an interrupt context.
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McNabb Daniel Lloyd
Porter Scott Lyon
Wyllie James Christopher
Carwell Robert M.
International Business Machines - Corporation
Maung Zarni
Winder Patrice L.
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