Schedule creating and terminating processes

[EricStudios]

Hi, All, I'am Eric.

I'am new to linux programming and has found that few issues hard to solve for me.

Is there any way to schedule creating and terminating child processes ?

For instance, I will create child processes from parent on which has elapsed say 30 seconds.

Also, to control the child processes will terminated after 60 seconds.


It will written with c.

Thanks,

-- Eric

[JeffreyCao]

try to put your process in crond

[EricStudios]

I'am sorry. May be this will not work for me.
I need to control the life of any child processes created by me.
Searching for some function like timer if it is available on linux system.

Trying something like:

 int parentstartproc = time();
int childproctobestart = 60; // 60 sec after parent process started.
 
while (1)
{
    if (time() > (parentstartproc + childprotobestart)
    {
         /// do fork ();
         break;
    }
} 
  

[JeffreyCao]

Use select() as a timer in user space

[EricStudios]

Jeffrey, thank, I'am checking it now.

Also, besides kernel.org. Any web sites or books good for beginners to learn syscall ? Thanks !