46 lines
2.3 KiB
Text
46 lines
2.3 KiB
Text
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Sfio is a portable library for managing I/O streams. It provides
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similar functionality to the ANSI C Standard I/O functions known
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collectively as Stdio. However, it has a distinct interface and is
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generally faster and more robust than most Stdio implementations.
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Sfio also introduces a number of new features and concepts beyond
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Stdio stream I/O processing:
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+ Automatic locking to avoid concurrent stream accesses,
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+ I/O disciplines to pre/post-process read/write data from/to streams,
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+ Stream stacking for recursive processing of nested streams,
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+ Stream pooling for automatic stream synchronization when I/O
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operations are performed on different streams,
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+ Buffer reservation for safe access to the internal buffers of streams,
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+ Robust handling of variable-sized records, and
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+ Extensible printf/scanf-like formatting I/O operations.
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For backward compatibility, Sfio provides two Stdio emulation
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packages. An application with source code can include the header file
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stdio.h provided by Sfio instead of the native one to translate Stdio
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calls to Sfio calls. An application already compiled with the native
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header file stdio.h can make use of Sfio functionality by linking with
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the library libstdio.a which emulates Stdio functions. In fact, it is
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safe to mix and match modules that are compiled with either
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Sfio-provided or native stdio.h.
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The current distribution of Sfio is Sfio1998. This version of the
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library is portable to all known UNIX platforms including various
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flavors of IRIX, SUNOS, Solaris, Ultrix, MVS/OpenEdition, Linux and
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BSDI. The library handles 64-bit streams on platforms that support
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64-bit files. The formatting family of functions (e.g., sfprintf()
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and sfscanf()) have been extended so that applications can redefine
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the meanings of predefined patterns as well as define new patterns.
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The manual page has more details on recent changes.
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Below are papers related to Sfio:
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David G. Korn and Kiem-Phong Vo, ``Sfio: Safe/Fast String/File IO'',
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Proceedings of the Summer '91 Usenix Conference, pp. 235-256, 1991.
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Glenn S. Fowler, David G. Korn and Kiem-Phong Vo,
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``Feature-Based Portability'', Proceedings of the Usenix VHLL
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Conference, pp. 197-207, 1994.
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Kiem-Phong Vo, ``An Architecture for Reusable Libraries'',
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Proc. of the IEEE Fifth Int. Conf. on Software Reuse, 1998.
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