I have the following file:
<++> mmap.scm
(use posix)
(use lolevel)
(let* ((fd (file-open "mmap.scm" (+ open/rdonly open/nonblock)))
(size (file-size fd))
(mmap (map-file-to-memory #f size prot/read (+ map/file map/shared) fd))
(buf (memory-mapped-file-pointer mmap)))
(write fd)
(newline)
(write size)
(newline)
(write mmap)
(newline)
(write buf)
(newline)
(write (pointer-s8-ref buf))
(newline)
(write (integer->char (pointer-s8-ref buf)))
(newline))
<-->
Which opens itself as an mmap and reads the first byte. The output
is:
<++> csc -o mmap mmap.scm && ./mmap
3
458
#<mmap>
#<pointer 0x8818c000>
40
#\(
<-->
So far so good, that is what I would expect. I'd like to work with
an mmap buffer like a string. Is it possible to create an object
that will treat the mmap area as a string that I can run regular
string operations on without copying the mmap buffer? I'm
specifically interested in running regular expressions across the
mmap space.
-Alan
--
.i ko djuno fi le do sevzi
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