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qemu.py: Don't set _popen=None on error/shutdown

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Keep the Popen object around to we can query its exit code later.

To keep the existing 'self._popen is None' checks working, add a
is_running() method, that will check if the process is still running.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20170526181200.17227-2-ehabkost@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Eduardo Habkost 2017-05-26 15:11:58 -03:00
parent 99861ecbc5
commit 37bbcd5757
1 changed files with 7 additions and 5 deletions
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12
scripts/qemu.py
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@ -85,8 +85,11 @@ class QEMUMachine(object):
return
raise
def is_running(self):
return self._popen and (self._popen.returncode is None)
def get_pid(self):
if not self._popen:
if not self.is_running():
return None
return self._popen.pid
@ -128,16 +131,16 @@ class QEMUMachine(object):
stderr=subprocess.STDOUT, shell=False)
self._post_launch()
except:
if self._popen:
if self.is_running():
self._popen.kill()
self._popen.wait()
self._load_io_log()
self._post_shutdown()
self._popen = None
raise
def shutdown(self):
'''Terminate the VM and clean up'''
if not self._popen is None:
if self.is_running():
try:
self._qmp.cmd('quit')
self._qmp.close()
@ -149,7 +152,6 @@ class QEMUMachine(object):
sys.stderr.write('qemu received signal %i: %s\n' % (-exitcode, ' '.join(self._args)))
self._load_io_log()
self._post_shutdown()
self._popen = None
underscore_to_dash = string.maketrans('_', '-')
def qmp(self, cmd, conv_keys=True, **args):