kc3-lang/gnulib/doc/posix-functions/poll.texi
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Hash : c36a0f21
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Date : 2024-10-27T17:01:29
doc: Add a module index. * doc/Makefile (undocumented-modules.texi): New rule. (%.info, %.html, %.dvi, %.pdf): Depend on undocumented-modules.texi. (mostlyclean): Remove also *.m and *.tmp. (force): New rule. * doc/*.texi: Add module index entries. * doc/*/*.texi: Likewise.
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doc/posix-functions/poll.texi
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@node poll @subsection @code{poll} @findex poll POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/poll.html} Gnulib module: poll @mindex poll Portability problems fixed by Gnulib: @itemize @item This function is missing on some platforms: mingw, MSVC 14, HP NonStop. @item This function doesn't work on special files like @file{/dev/null} and ttys like @file{/dev/tty} on some platforms: macOS 14, AIX 5.3. @end itemize Portability problems not fixed by Gnulib: @itemize @item Under Windows, when passing a pipe, Gnulib's @code{poll} replacement might return 0 even before the timeout has passed. Programs using it with pipes can thus busy wait. @item On some platforms, file descriptors other than sockets do not support POLLHUP; they will return a "readable" or "writable" status instead: AIX 7.2, Cygwin 3.4.6, HP NonStop, mingw, MSVC. @end itemize