I was just poking through posix, posix-shm, posix-utils, and
posix-extras and it seems that none of them implement semaphores!
Am I missing something, or is this actually the case?
-Dan
On 5/3/2013 3:26 PM, Ivan Raikov wrote:
Hello,
I really strongly advise _against_ using SRFI-4 vectors for 4G
files, as I have experienced serious performance issues even with
vectors of a few million elements. If your C code is to be linked
with your Chicken code, you can pass the pointer to your data from C
to Scheme and use SRFI-4 foreign pointers to access it (see unit
lolevel for details). If the C code is running as a separate process,
you could try using posix-shm to create shared memory between
processes and then use foreign pointers in the Chicken process.
Ivan
On May 4, 2013 3:04 AM, "Pedro Melendez" <pmelen...@pevicom.com
<mailto:pmelen...@pevicom.com>> wrote:
Hi all,
Sorry if this question is obvious, but I couldn't find what I were
looking for in the documentation so maybe you guys can help me.
I am developing a prototype of a server that would serve 3D
seismic images across the network. This task requires to process
big files (~4 GB) with existing C code that is desirable to
maintain. I plan to write the server itself in Chicken scheme but
I would need to maintain the existing code in C that opens and
process those files.
Giving the size of the file, I want to share the memory space
between C and Chicken and avoid copying values between areas. Is
that even possible? Anyone has an idea on how can I address this?
Thanks in advance!
Pedro
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T: +1 (416) - 357.5356
Skype ID: pmelendezu
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