QB64(GL) hangs the whole system.

[S3KshuN8]

In a BASIC program I am trying to build very large strings (> 128MB) but the system becomes unresponsive, forcing me to do a hard shutdown by holding the power button down for 4 seconds.

This is an example (BASIC):

Code: Select all

GridObject$ = ""
FOR I&& = 1 TO 178956971
    IF I&& MOD 100000 = 0 THEN PRINT I&&; "of 178956971 ...";
    IF I&& = 178956971 THEN GridObject$ = GridObject$ + "7|" ELSE GridObject$ = GridObject$ + "0"
NEXT I&&


It may be a problem with the GL version of QB64, it's not nearly as stable as the SDL version of QB64 for linux. In any case, it should not cause the operating system to hang, so that's why I'm mentioning it here. Somewhere around 2.8 million characters is when it hangs the system. It has done this to me 3 times now in 3 different locations. I'd like to try it with QB64(SDL) but it requires SDL libraries which are not installed in Ultimate Edition 3.8 and I don't know how to properly install them.

[pam]

Here's hoping Canonical has it in the repos:
type in terminal:

Code: Select all

sudo apt-get install sdl2

Then check. You can chit chat at their forums too... http://forums.libsdl.org/

[S3KshuN8]

Thanks for the quick reply. The laptop is currently in windows running a similar program which will take a considerable amount of time to complete, after that I will switch over to linux and try that out. I knew it was something simple. Thanks again.

[S3KshuN8]

sudo apt-get install sdl2

That did not work. I also tried "sudo apt-get install sdl". I can get the necessary files from the QB64 site, I just have to hunt them down. But the main reason for this thread was to make someone here aware of the fact that my QB64(GL) program causes U E 3.8 to hang, forcing me to kill the computer. It should not do this.

[pam]

Quite strange indeed.
I take it you are running this on the dell inspiron.
What graphics card are you using? Have you installed the drivers?

[S3KshuN8]

Quite strange indeed.
I take it you are running this on the dell inspiron.
What graphics card are you using? Have you installed the drivers?

Yes, its the dell. According to windows device manager its an "Intel(R) HD Graphics 3000". I didn't install any drivers, the 3.8 installer did that automatically. I'm not doing anything related to graphics, so a video driver problem seems unlikely. I would think if that were it, it would freeze right away and not 2.7 to 2.9 million bytes into building a string...

[pam]

Ok.
The GL related issues is to do with the graphics stack. The problem would not pertain to Ultimate Edition 3.8 as its built from ubuntu. It could be a bug in QB64 while working with sandybridge graphics.
You could recreate and create a log of the bug and send it to the devs of QB64...

In that case lets use software....install sdl2 on linux:
Download it from http://www.libsdl.org/tmp/SDL-2.0.2-8197.tar.gz
Next follow the instructions from the link below for installing it on linux:
http://nothingtocode.blogspot.in/2013/0 ... -mint.html

If you face any problems dont hesitate to ask...

[S3KshuN8]

I posted it over there on the QB64 forum yesterday after I ran into the problem. The primary developer, Galleon, recently took on a full-time job and is giving that 100% leaving the rest of us temporarily hung out to dry... (Can't fault him for doing so but it is a bit frustrating.)

EDIT

For future reference to any who may try to install QB64, the magic command was:

Code: Select all

sudo apt-get install g++ libsdl-image1.2-dev libsdl-mixer1.2-dev libsdl-net1.2-dev libsdl-ttf2.0-dev timidity


Now I'll try running the same code in QB64(SDL) to see if it hangs or works as it should...

EDIT

It's running now and is past the point where it froze the OS the three times I tried it...
I'll let it run overnight but since I have already chosen a different process, it probably won't execute to completion

[pam]

COOL BOSS!

Thats one of the worst things about linux and open source....somewhere along the lines, commitment just breaks

[S3KshuN8]

I'm glad to report that Galleon is back to work on QB64, maybe not the same as before but more so than the past couple of months. Here's hoping there's a stable version of GL for linux by xmas.



PS. My simple string building program which causes the entire OS to hang, has anyone else tried to replicate this behavior?