Window Manager Crashes

Michael L. Takayama tak at aerospace.aero.org
Thu Feb 1 14:37:44 AEST 1990


In article <13273 at phoenix.Princeton.EDU> markv at gauss.Princeton.EDU () writes:
>
     ...Stuff deleted...

>After running for a while, the window manager crashes with the following
>message:
>
>-----
>fifo_intr: GM TIMEOUT (FIFO still > half full)!
>
>The window manager was killed by signal 15.
>-----
>

We used to get this problem all of the time in one of our big programs
and, after a lot of headaches, tracked it down to passing double
precision values to the v3f() commands.  Funny thing is that this
*will* work for a random period until enough points have been pushed
down the graphics pipeline - then it croaks with the above-mentioned
*super-informative* error message.

I recommend checking your data types - a *lot* of the GL routines are
not very happy with being passed the wrong data types [Type-checking
in C?  What a concept... :-) ].

We also ran into the NaN problem with n3f().  Very bad stuff with very
useless error messages...

Good luck -

Michael L. Takayama
Computer-Aided Engineering Department
The Aerospace Corporation



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