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Cygwin 1.7.25 has a bug that even though it claims to support RLIMIT_NOFILE inheritance, there is no enforcement of the soft limit, and getdtablesize() automatically grows until it reaches the hard limit which cannot be changed by setrlimit(). Best is to just treat things as an invariant limit, as several other modules assume that getdtablesize() will not change without an intervening setrlimit(). * m4/getdtablesize.m4 (gl_FUNC_GETDTABLESIZE): Detect problem. * modules/getdtablesize (configure.ac): Build replacement. * m4/unistd_h.m4 (gl_UNISTD_H_DEFAULTS): Set up a witness. * modules/unistd (Makefile.am): Expose the witness. * lib/unistd.in.h (getdtablesize): Declare replacement. * lib/getdtablesize.c (rpl_getdtablesize): Work around it. * tests/test-getdtablesize.c (main): Test it. * doc/glibc-functions/getdtablesize.texi (getdtablesize): Document it. Signed-off-by: Eric Blake <eblake@redhat.com>
22 lines
411 B
Plaintext
22 lines
411 B
Plaintext
@node getdtablesize
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@subsection @code{getdtablesize}
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@findex getdtablesize
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Gnulib module: getdtablesize
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Portability problems fixed by Gnulib:
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@itemize
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@item
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This function is missing on some platforms:
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mingw, MSVC 9.
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@item
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This function does not represent the true @code{RLIMIT_NOFILE} soft
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limit on some platforms:
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Cygwin 1.7.25.
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@end itemize
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Portability problems not fixed by Gnulib:
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@itemize
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@end itemize
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