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43 lines
1.7 KiB
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43 lines
1.7 KiB
Plaintext
This directory contains extensions to the core State Threads Library
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that were contributed by users. All files hereunder are not part of the
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State Threads Library itself. They are provided as-is, without warranty
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or support, and under whatever license terms their authors provided. To
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contribute your own extensions, just mail them to the project
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administrators or to one of the project's mailing lists; see
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state-threads.sourceforge.net. Please indicate the license terms under
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which the project may distribute your contribution.
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========================================================================
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stx_fileio
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----------
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Contributed by Jeff <jlb-st@houseofdistraction.com>, 4 Nov 2002.
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Provides non-blocking random access file reading capability for
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programs using the State Threads library. There is one public function:
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ssize_t stx_file_read(st_netfd_t fd, off_t offset,
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void *buf, size_t nbytes, st_utime_t timeout);
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The implementation is not optimal in that the data is copied at least once
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more than should be necessary. Its usefulness is limited to cases where
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random access to a file is required and where starvation of other threads
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is unacceptable.
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The particular application which motivated this implementation was a UDP
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file transfer protocol. Because the OS does very little buffering of UDP
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traffic it is important that UDP transmission threads are not starved for
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periods of time which are long relative to the interval required to
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maintain a steady send rate.
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Licensed under the same dual MPL/GPL as core State Threads.
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========================================================================
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stx_dns
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-------
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Documentation coming.
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========================================================================
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