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appending data to a mmap-ed file

Joel Reymont
- Jesper Louis Andersen
  - Joel Reymont
- Gerd Stolpmann
- Richard W.M. Jones
  - Goswin von Brederlow
    - Richard W.M. Jones
      - Joel Reymont
      - Goswin von Brederlow
- Christophe Raffalli

Date:	-- (:)
From:	Joel Reymont <joelr1@g...>
Subject:	Re: [Caml-list] appending data to a mmap-ed file

Jesper,

On Dec 16, 2010, at 12:38 PM, Jesper Louis Andersen wrote:

> Simply have an Ocaml array of bytes or something such to
> store data into (my Ocaml representation specific knowledge is not up
> to par at the moment, but arrange it such that the byte-array has
> C-representation underneath.

The data comes from a C++ thread running a market data feed. I was planning to manage the memory-mapped file in the same thread and only notify OCaml when new data is available, after extending the memory mapping. It seems to be the simplest approach to me. 

I also need to launch a C++ thread from OCaml and talk to it but that's probably a subject for a new mailing list thread. 

	Thanks, Joel

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