QProcess doesn't start when memory consumption is too high

[bibhukalyana]

It is very unlikely that QProcess does any kind of resource check. It is way more likely that your operating system is denying more resources to you program.
_

Ok, so in that case how to deal with this situation keeping in my mind that I can't decrease the memory consumption of my program? Can I tell my OS to allocate more resources to my program?

[wysota]

Which operating system are we talking about?

[bibhukalyana]

I am using linux 2.6(embedded, arm) and qt version is 4.6.

[versat]

Hi,
i have the exactly same problem.
Qt 4.6 is running on an embedded system (Linux 2.6.38, ARM926EJ-S).
The error is: Resource error (fork failure): Cannot allocate memory
Since fork makes (somewhat) a copy of the calling process, and my calling process is a bit "bigger", it fails athough there really should be enough free memory for the small shell script that should be called.
Is there an alternative to QProcess that doesn't use fork (that way?)?
Before i implemented QProcess i made a simple system call, but that is really dirty and i want to avoid that.

Best Regards

[wysota]

You can implement an external daemon that you can contact using some IPC mechanism that will fork itself into the process you want.

[bibhukalyana]

You can implement an external daemon that you can contact using some IPC mechanism that will fork itself into the process you want.

Couldn't understand anything . Since i am a beginner so i don't have much idea regarding this. If you can give me a simple example then it would be really great.