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python/machine.py: Add _early_cleanup hook 

Some parts of cleanup need to occur prior to shutdown, otherwise
shutdown might break. Move this into a suitably named method/callback.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20200710050649.32434-4-jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
John Snow 2020-07-10 01:06:40 -04:00 committed by Philippe Mathieu-Daudé
parent 671940e633
commit e2c97f1612
1 changed files with 12 additions and 6 deletions
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18
python/qemu/machine.py
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@ -365,6 +365,17 @@ class QEMUMachine:
close_fds=False)
self._post_launch()
def _early_cleanup(self) -> None:
"""
Perform any cleanup that needs to happen before the VM exits.
"""
# If we keep the console socket open, we may deadlock waiting
# for QEMU to exit, while QEMU is waiting for the socket to
# become writeable.
if self._console_socket is not None:
self._console_socket.close()
self._console_socket = None
def wait(self):
"""
Wait for the VM to power off
@ -376,12 +387,7 @@ class QEMUMachine:
"""
Terminate the VM and clean up
"""
# If we keep the console socket open, we may deadlock waiting
# for QEMU to exit, while QEMU is waiting for the socket to
# become writeable.
if self._console_socket is not None:
self._console_socket.close()
self._console_socket = None
self._early_cleanup()
if self.is_running():
if hard: