Re: [Caml-list] BUG in unix.ml (was: strange errors when linking lwt.unix)

[oliver <oliver@first.in-berlin.de>]

On Fri, Mar 15, 2013 at 03:05:51PM +0000, Jeremie Dimino wrote:
[...]
> Actually OCaml is using sigaction(2).  It is only using signal(2) when
> sigaction is not available.
[...]

Possibly on non-unixoid systems, e.g. Windows.


> 
> Actually there are two different things here:
> 
> - signal disposition: this is a process-wide settings for each signal
> describing how to react when it is received.  It can be changed with
> the [sigaction] system call (or the less portable [signal]).
> - signal mask: it is a per-thread set of signals that are blocked.  It
> can be changed with sigprocmask.


sigprocmask and sigaction and so on all work on processes.

Mixing processes and threads (especially involving signals) can be tricky.


Using signal(2) is deprecated in general.

If you use Windows, it might be necessary,
because unix-moulde is for Unix.

Don't know if cygwin and similar environments allow
usage of unix-module. But even if they do, I'm not
sure it works like in real unixoid systems.


Ciao,
   Oliver