Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c++ > #14541

Re: Troubles when processes try to access to a char device

Show all headers | View raw

Il 27/02/2012 14:19, gwowen ha scritto:
> How are you sharing the file descriptor between processes?

The file descriptor is an attribute of an object which is in a shared 
memory area.

The code is like that:
## shared memory ##
class my_obj
{
    fd;

public:
    init()
    {
     ...
     fd = open("/dev/my_device");
     ...

    };

    int read_data()
    {
      return read(fd, buffer);
    }

    void write_data(data)
    {
       buffer = data;
       write(fd, buffer);

    }
}


-- 
*Willy* - *Contatti*: http://snipurl.com/contatti
* *FAQ* di /it-alt.comp.software.mozilla/: http://www.FAQmozilla.org
* *Gratuiki* - Software Free: http://gratuiki.willygroup.org

Back to comp.lang.c++ | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Troubles when processes try to access to a char device Willy <gruppi@willygroup.org> - 2012-02-27 08:58 +0100
  Re: Troubles when processes try to access to a char device gwowen <gwowen@gmail.com> - 2012-02-27 05:19 -0800
    Re: Troubles when processes try to access to a char device Willy <gruppi@willygroup.org> - 2012-02-27 14:41 +0100
      Re: Troubles when processes try to access to a char device gwowen <gwowen@gmail.com> - 2012-02-27 07:08 -0800
        Re: Troubles when processes try to access to a char device Willy <gruppi@willygroup.org> - 2012-02-27 16:42 +0100
          Re: Troubles when processes try to access to a char device gwowen <gwowen@gmail.com> - 2012-02-27 09:29 -0800
          Re: Troubles when processes try to access to a char device Dan Oxender <d?n.oxe????@gmail.com> - 2012-02-28 09:06 -0700
  Re: Troubles when processes try to access to a char device Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2012-02-27 14:38 +0100

csiph-web