forked from Imagelibrary/rtems
6449498bc7
* SUPPORT, LICENSE: New files. * Numerous files touched as part of merging the 4.5 branch onto the mainline development trunk and ensuring that the script that cuts snapshots and releases works on the documentation.
62 lines
1.8 KiB
Perl
62 lines
1.8 KiB
Perl
@c
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@c COPYRIGHT (c) 1988-2002.
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@c On-Line Applications Research Corporation (OAR).
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@c All rights reserved.
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@c
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@c $Id$
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@c
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@chapter Status of Implementation
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This chapter provides an overview of the status of the implementation
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of the POSIX API for RTEMS. The @i{POSIX 1003.1b Compliance Guide}
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provides more detailed information regarding the implementation of
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each of the numerous functions, constants, and macros specified by
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the POSIX 1003.1b standard.
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RTEMS supports many of the process and user/group oriented services
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in a "single user/single process" manner. This means that although
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these services may be of limited usefulness or functionality, they
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are provided and do work in a coherent manner. This is significant
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when porting existing code from UNIX to RTEMS.
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@itemize @bullet
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@item Implementation
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@itemize @bullet
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@item The current implementation of @code{dup()} is insufficient.
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@item FIFOs @code{mkfifo()} are not currently implemented.
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@item Asynchronous IO is not implemented.
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@item The @code{flockfile()} family is not implemented
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@item getc/putc unlocked family is not implemented
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@item Shared Memory is not implemented
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@item Mapped Memory is not implemented
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@item NOTES:
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@itemize @bullet
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@item For Shared Memory and Mapped Memory services, it is unclear what
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level of support is appropriate and possible for RTEMS.
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@end itemize
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@end itemize
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@item Functional Testing
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@itemize @bullet
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@item Tests for unimplemented services
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@end itemize
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@item Performance Testing
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@itemize @bullet
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@item There are no POSIX Performance Tests.
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@end itemize
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@item Documentation
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@itemize @bullet
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@item Many of the service description pages are not complete in this
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manual. These need to be completed and information added to the
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background and operations sections.
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@item Example programs (not just tests) would be very nice.
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@end itemize
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@end itemize
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