Instrument/Acmecape: ensure iio-capture termination
Once an ACME cape instrument is released, if the stop() method has not
been called by the client code, let's ensure to release the channels by
killing the corresponding iio-caputure process.
Signed-off-by: Patrick Bellasi <patrick.bellasi@arm.com>
diff --git a/devlib/instrument/acmecape.py b/devlib/instrument/acmecape.py
index 818094f..5c10598 100644
--- a/devlib/instrument/acmecape.py
+++ b/devlib/instrument/acmecape.py
@@ -58,6 +58,12 @@
self.add_channel('device', 'current')
self.add_channel('timestamp', 'time_ms')
+ def __del__(self):
+ if self.process and self.process.pid:
+ self.logger.warning('killing iio-capture process [%d]...',
+ self.process.pid)
+ self.process.kill()
+
def reset(self, sites=None, kinds=None, channels=None):
super(AcmeCapeInstrument, self).reset(sites, kinds, channels)
self.raw_data_file = tempfile.mkstemp('.csv')[1]
@@ -98,6 +104,7 @@
.format(self.process.returncode, output))
if not os.path.isfile(self.raw_data_file):
raise HostError('Output CSV not generated.')
+ self.process = None
def get_data(self, outfile):
if os.stat(self.raw_data_file).st_size == 0: