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Fixed it !

I wasn't allocating any memory for the mutex lock and was passing in &muxlock when it should have just been muxlock


Not sure why it waited until line 50 to segfault though

Sorry, stupid mistake.

mmap isn't returning MAP_FAILED

I have



if( ptr = MAP_FAILED )
{
fprintf(stderr, "Error setting shared memory in recordTotalBytes() error is %d \n ", errno);
exit(EXIT_FAILURE);
}

The errno is 0

Is that the first entry under errors on this page?

mmap

[EACCES]
The fildes argument is not open for read, regardless of the protection specified, or fildes is not open for...

Just checked it against MAP_FAILED

And it IS failing.

Any idea why ?


Thanks

Hi

Thanks for the replies

I changed it to

*ptr = 10

and it still segfaults

Hi,

My code is segment faulting on line 50 (*ptr = 10)

I can't understand why, could someone explain ?




(Headers here)

Cheers guys, it works now :D

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^
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Thanks for the help guys I appreciate it.

:)

This is my final program



#include <stdio.h>

Sorry I see the mistake now no &sign before the a. :)

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