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Re^2: sysseek and syswrite fails

by bloonix (Monk)
on Oct 15, 2009 at 21:42 UTC ( #801440=note: print w/replies, xml ) Need Help??

in reply to Re: sysseek and syswrite fails
in thread sysseek and syswrite fails

Hi Peter,

>>Double check that you're indeed using unbuffered IO everywhere. I am using sysseek, syswrite, sysread.
>>If I understand you correctly, you're forking
>>children to read:

Yes. Each child write its current status to a file that looks like a table.

>>use strace -f instead for the _real_, _complete_

The above strace output was generated with -f for each child.

>>consider to explicitly open the files separately in
>>each child (my bet - issues both for the pointer
>>AND for the locking).

Hmmm, okay, that could be the solution. The parent is forking and the children uses all opened handles of the parent.

I test it! Thanks a lot for the suggestions!

Jonny Update: removed small tags

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