aDriv4 - MANAGER

Edit File: fd.py

"""A utility module which has FD-related functions. This module mostly exists for L{clean_fds}, so it can be imported without accidentally getting a reactor or something else that might create a critical file descriptor. """ import os import resource def clean_fds(): """Close all non-stdio file descriptors. This should be called at the beginning of a program to avoid inheriting any unwanted file descriptors from the invoking process. Unfortunately, this is really common in unix! """ rlimit_nofile = resource.getrlimit(resource.RLIMIT_NOFILE)[1] total_descriptors = min(4096, rlimit_nofile) for fd in range(3, total_descriptors): try: os.close(fd) except OSError: pass