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| | |-+  OS X "trying to clear a free semaphore" lockup
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Author Topic: OS X "trying to clear a free semaphore" lockup  (Read 2150 times)
Foo von Bar
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OS X "trying to clear a free semaphore" lockup
« on: December 19, 2002, 08:02:16 am »

Pardon what may be my cluelessness, but I haven't found a suggestion for this one in the bugs list or FAQs. I am running the current CVS codebase on Mac OS X 10.2 with SDL 1.2.5. The game will at various points (usually, it appears, when loading a new scene) lock up tight with the following messages:

WARNING: trying to clear a free semaphore (value=1)
WARNING: SetSemaphore did not return 0, this could be bad!

Any suggestions?
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nemo
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Re: OS X "trying to clear a free semaphore" lockup
« Reply #1 on: December 19, 2002, 10:58:54 am »

Don't suppose you're in debug mode and can post a stack trace? Smiley
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F.219
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Re: OS X "trying to clear a free semaphore" lockup
« Reply #2 on: December 19, 2002, 06:05:06 pm »

Sure, I'm in debug mode ... but no stack trace, since the program does not *crash* ... one of its threads just freezes up. I get a nice OS X *swirly ball*, too.

Looking in the code, I see SetSemaphore is chiefly (only?) used in the graphics code, so I wonder if this is an SDL problem? I'm using the SDL from Fink CVS, and no OpenGL.
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Foo von Bar
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Re: OS X "trying to clear a free semaphore" lockup
« Reply #3 on: December 19, 2002, 06:06:39 pm »

(Erm. Foo von Bar == F.219, sorry about that)
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