Re: [naviserver-devel] uploading large files

[Zoran V. <zv...@ar...>]

Am 16.06.2005 um 18:18 schrieb Zoran Vasiljevic:

>
> One can even explore the memmap machinery and see if we can
> entirely drop the temp-file and use the system paging for that:
> so if the input exceeds the maxinput, we just mmap /dev/zero file
> I believe something like that should be possible but will have to
> double-check if this is true.
>

I knew it ("man mmap" on solaris):


      When MAP_ANON is set in flags, and fd is set to  -1,  mmap()
      provides  a  direct  path  to  return anonymous pages to the
      caller.  This operation is equivalent to passing  mmap()  an
      open  file descriptor on /dev/zero with MAP_ANON elided from
      the flags argument.

I'd have to see if this is really working on Linux, Mac and Win.
Zoran