[vlc-devel] Re: (SPAM 2)Re: Problem with exec(), system() popen() of VLC
Michael Pujos
pujos at audemat-aztec.com
Wed May 24 17:26:37 CEST 2006
Michael Pujos wrote:
> Rémi Denis-Courmont wrote:
>
>> You CANNOT pipe into a daemonized process.
>>
>>
>>
>>> Any idea to make this work would be greatly appreciated. I already
>>> tried a lot of things like -d or adding a '&' without success and
>>> everything I could think of using exec / popen.
>>>
>>
>>
>> Don't use the daemon option. Simply fork() before you call system().
>>
>>
>>
> Thanks, that works. It was so obvious I didn't even think of it !
>
Spoke a bit too soon: it works perfectly in a non-threaded application
but inside a pthread you never reach the code of the
parent (which is very strange, but forks in threads are described as a
bit touchy)!
So with the following code in a pthread you never ever display "exit".
system() (or exec() ) do some bad things :(
if(fork() == 0)
{
String_t cmd = tb_String("dvbstream -f %s -rtp -o 8192 | vlc -
-I dummy --program %s --sout '#standard{access=http,mux=ts,dst=:3001}'",
tb_toStr(frequency),
tb_toStr(pid));
system(tb_toStr(cmd));
}
tb_warn("exit");
--
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