[ECOS] Any problem ?

ratheesh kannoth ratheesh.ksz@gmail.com
Fri Mar 25 15:40:00 GMT 2011


On Fri, Mar 25, 2011 at 8:54 PM, Gary Thomas <gary@mlbassoc.com> wrote:
> On 03/25/2011 09:17 AM, ratheesh kannoth wrote:
>>
>> Is there any prob with below code segment  in eCos ?
>>
>> {
>>                fd_set rd_fds;
>>
>>                FD_ZERO(&rd_fds);
>>
>>                 while (1) {
>>
>>                           timeout.tv_sec = 1;
>>                           timeout.tv_usec = 0;
>>
>>                          if (select(0,&rd_fds, NULL, NULL,&timeout)<  0) {
>>                                       printf("\n  Error \n");
>>                                       sleep(1);
>>                                       continue;
>>                           }
>>
>>                          printf("\n  Success  \n");
>>                  }
>>   }
>>
>
> Yes - the first parameter to select() is the number of open file
> descriptors to check (fd in 0..N-1).  Putting a zero there will
> never yield any activity.
>
> Typically, one puts the max # of open file descriptors or at
> least the highest known open one + 1.
>
> --
> ------------------------------------------------------------
> Gary Thomas                 |  Consulting for the
> MLB Associates              |    Embedded world
> ------------------------------------------------------------
>
True. But it runs perfectly on  eCos and linux.  I facing some
problem, whenever i hit a key on keyboard in eCos. Is there connection
to this select system call here.

-Ratheesh

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