forked from Imagelibrary/rtems
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59 lines
1.8 KiB
Perl
59 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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@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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