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Old 01-16-2010, 07:27 PM   #1
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Registered: Jun 2008
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C code fails on repeatedly opening /proc


I am trying to run my code repeatedly in a loop about 50 times for timing measurement. I have C code running on ubuntu 8 on a single processor, Intel x86. My code is something like this

for (loop =0;loop<=50;loop++)
// other operations

pDir = opendir("/proc");
while (pDir == NULL)
pDir = opendir("/proc");
// some computations


// other operations
} // end of loop
After about 28-29 times the loop stops executing. I initially had a return -1 if I got pDir == NULL. That caused my program to exit, and I dont want that. Any clues on why this happens, and how I can circumvent this?

Thanks for looking into this.
Old 01-16-2010, 07:48 PM   #2
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Registered: Jun 2008
Posts: 20

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Sorry about that. I found I had an unclosed file handle in my loop which was causing a crash. Now even 1000 times does not cause an exit.


code, directory, linux, opening

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