<[EMAIL PROTECTED]> wrote:
...
> somebody points me to a web page/reference that says how to call a
> function then reclaim the whole memory back in python.
>
> Meanwhile, the best that I could do is fork a process, compute the
> results, and return them back to the parent process. This I
That's my favorite way to ensure that all resources get reclaimed: let
the operating system do the job.
> implemented in the following function, which is kinda working for me
> now, but I am sure it can be much improved. There should be a better
> way to return the result that a temporary file, for example. I
You can use a pipe. I.e. (untested code):
def run_in_separate_process(f, *a, **k):
import os, sys, cPickle
pread, pwrite = os.pipe()
pid = os.fork()
if pid>0:
os.close(pwrite)
with os.fdopen(pread, 'rb') as f:
return cPickle.load(f)
else:
os.close(pread)
result = f(*a, **k)
with os.fdopen(pwrite, 'wb') as f:
cPickle.dump(f, -1)
sys.exit()
Using cPickle instead of pickle, and a negative protocol (on the files
pedantically specified as binary:-), meaning the latest and greatest
available pickling protocol, rather than the default 0, should improve
performance.
Alex
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