kc3-lang/gnulib/doc/glibc-functions/getpagesize.texi

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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.
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  * doc/*.texi: Add module index entries.
  * doc/*/*.texi: Likewise.
  

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• doc/glibc-functions/getpagesize.texi

• @node getpagesize
  @subsection @code{getpagesize}
  @findex getpagesize
  
  LSB specification:@* @url{https://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/baselib-getpagesize.html}
  
  Documentation:
  @itemize
  @item
  @ifinfo
  @ref{Query Memory Parameters,,How to get information about the memory subsystem?,libc},
  @end ifinfo
  @ifnotinfo
  @url{https://www.gnu.org/software/libc/manual/html_node/Query-Memory-Parameters.html},
  @end ifnotinfo
  @item
  @uref{https://www.kernel.org/doc/man-pages/online/pages/man2/getpagesize.2.html,,man getpagesize}.
  @end itemize
  
  Gnulib module: getpagesize
  @mindex getpagesize
  
  Portability problems fixed by Gnulib:
  @itemize
  @item
  This function is missing on some platforms:
  MSVC 14, Android 4.4.
  @item
  This function is not declared on some platforms:
  HP-UX 11 with compiler option @code{-D_XOPEN_SOURCE=600}.
  @item
  This function is broken on some platforms:
  mingw.
  @end itemize
  
  Portability problems not fixed by Gnulib:
  
  @itemize
  @item
  The function has never been in POSIX and was removed from the Single
  UNIX Specification in SUSv3 (2001).
  Although portable programs are supposed to use @code{sysconf (_SC_PAGESIZE)}
  instead, in practice @code{getpagesize} can be a little faster.
  
  @item
  On typical platforms this function's API limits page sizes to at most 1 GiB,
  even though @code{sysconf (_SC_PAGESIZE)} does not have this limitation.
  However, this has not been a practical problem yet,
  and so many programs use @code{getpagesize} that it's unlikely that
  new platforms would introduce larger page sizes any time soon.
  @end itemize
  

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