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[Caml-list] input_line is blocking
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Date: 2002-05-03 (14:25)
From: Oliver Bandel <oliver@f...>
Subject: Re: [Caml-list] input_line is blocking

On Fri, 3 May 2002, Warp wrote:

> Hi
> I'm running "ocamlc" by using Unix.open_process_full in order to write an
> automatic compiler.
> Right now, it's working fine, but I got now a problem with input_line :
> after running open_process_full , i'm first reading all its stdout lines of
> the process until End_of_file is raised, then all its stderr lines using the
> same function.
> It has work fine for few weeks now, but now I found that in some cases
> input_line will block, not raising End_of_file.

In networking-applications, or when using pipes you
can't use C's standard-lib and have to use the
Unix-API directly (open/read/write/close).

Ocaml's libraries seem to be wrapping C's standard-lib
for it's normal I/O and the Unix-API for it's Unix-module.

So, if you want to use pipes/sockets, you have to use the
Unix-module's I/O-functions!

But I think in Ocaml it is not a problem to write wrapper-code.
In C this would be much effort, but I think in Ocaml it's
easy to write a network-lib....


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