Concurrent calls to ModuleDepService would cause significant wasted
work, as potentially all pool threads run the same uncached module dep
scan.
Without:
3243581 function calls (3233009 primitive calls) in 4770.672 seconds
ncalls tottime percall cumtime percall filename:lineno(function)
2523 0.011 0.000 39.849 0.016 services.py:409(scan)
With:
2801561 function calls (2800042 primitive calls) in 5166.843 seconds
ncalls tottime percall cumtime percall filename:lineno(function)
2506 0.009 0.000 1.967 0.001 services.py:411(scan)
Ignore timing variance due to problems with the test job.
Given an extracted download of mitogen-2.2.tar.gz, with strategy_plugins
pointing into it, if an old version of the package was pip-installed,
then the old pip-installed package would be imported and override
whatever came from the tarball.
Instead, modify sys.path before attempting any import. This still isn't
perfect, but it's better.
Since BasicStream.close() invokes _stop_transmit() followed by
os.close(), and KqueuePoller._stop_transmit() defers the unsubscription
until the IO loop resumes, kqueue generates an error event for the
associated FD, even though the changelist includes an unsubscription
command for the FD.
We could fix this by deferring close() until after the IO loop has run
once (simply by calling .defer()), but that generates extra wakeups for
no real reason.
Instead simply notice the error event and log it, rather than treating
it as a legitimate event.
Another approach to fixing this would be to process
_stop_receive()/_stop_transmit() eagerly, however that entails making
more syscalls.
Closes#320.
When running any kind of script, rewrite the hashbang like Ansible does,
but subsequently ignore it and explicitly use a fragment of shell from
the ansible_*_interpreter variable to call the interpreter, just like
Ansible does.
This fixes hashbangs containing '/usr/bin/env A=1 bash' on Linux, where
putting that into a hashbang line results in an infinite loop.
David Wilson