Utility (Linux only) to ensure subprocesses exit when their parents do by sending
a specified signal when the parent dies.
 
Usage:
 
    subprocess.Popen(['some-executable'], preexec_fn=on_parent_exit('SIGHUP'))
 
Taken from https://gist.github.com/evansd/2346614,
http://evans.io/legacy/posts/killing-child-processes-on-parent-exit-prctl/

Modules
		builtins signal

Classes
		builtins.Exception(builtins.BaseException) PrCtlError   class PrCtlError(builtins.Exception)     PrCtlError(*args, **keywords)       Method resolution order: PrCtlError builtins.Exception builtins.BaseException builtins.object Data descriptors defined here: __weakref__ list of weak references to the object (if defined) Methods inherited from builtins.BaseException: __init__(self, *args) __reduce__(self) __repr__(self) __setstate__(self, dict) __str__(self) __unicode__(self) with_traceback(self, traceback) Static methods inherited from builtins.BaseException: __new__(subtype, *args, **keywords) Data descriptors inherited from builtins.BaseException: __cause__ __context__ __dict__ __suppress_context__ __traceback__ args

Functions
		on_parent_exit(signame) Return a function to be run in a child process which will trigger SIGNAME to be sent when the parent process dies

Data
		PR_SET_PDEATHSIG = 1 cdll = <ctypes.LibraryLoader object>