Hej All,
I am seeing some unexpected exceptions when running
tests via pytest and p4p.
After a lot of digging, the exception problem could be
cooked down into 2 test cases,
reading the .RBV and the .CNEN field of a motorRecord,
before closing the connection:
class Test(unittest.TestCase):
url_string = os.getenv("TESTEDMOTORAXIS")
print(f"url_string={url_string}")
axisTestUtil = AxisTestUtil(url_string, log_debug=True)
axisComm = axisTestUtil.getAxis()
# Read variables (floating point)
def test_TC_01101(self):
tc_no = "01101"
rbv = float(self.axisComm.getActPos(tc_no=tc_no))
print(
f"{datetime.datetime.now():%Y-%m-%d %H:%M:%S}
{filnam}:{lineno()} {tc_no} rbv={rbv}"
)
# Read variables (boolean)
def test_TC_01102(self):
tc_no = "01102"
enabled = self.axisComm.getEnabledStatus(tc_no=tc_no)
print(
f"{datetime.datetime.now():%Y-%m-%d %H:%M:%S}
{filnam}:{lineno()} {tc_no} enabled={enabled}"
)
def teardown_class(self):
tc_no = "011999"
print(
f"{datetime.datetime.now():%Y-%m-%d %H:%M:%S}
{filnam}:{lineno()} {tc_no} teardown_class"
)
self.axisTestUtil.close()
The somewhat shortened log seems to indicate that the exception happens
before the shutdown.
And the problem is the both under MacOs with python3.9 and
Debian with python3.7
platform linux -- Python 3.7.3, pytest-7.2.0, pluggy-1.0.0
collecting ... url_string=pva://IOC:m1
collected 2 items
Does anybody have a clue or hint ?
Thanks
/Torsten
011_Basic_Communication.py 2022-12-14 13:14:03 ConnP4P get IOC:m1.RBV
2022-12-14 13:14:03 ConnP4P get IOC:m1.RBV ret=Wed Dec 14 13:10:50 2022
100.11 time=0.01
2022-12-14 13:14:03 011:39 01101 rbv=100.11
.2022-12-14 13:14:03 ConnP4P get IOC:m1.CNEN
2022-12-14T13:14:03.905922950 CRIT pvxs.tcp.io Server Error while
processing cmd 0x0a: vector::_M_range_check
Dumping a stack trace of thread 'PVXCTCP':
[ 0x7f4fc8afeb6b]:
...python3.7/site-packages/p4p/../epicscorelibs/lib/libCom.so.7.0.7.99.0(epicsStackTrace+0x4b)
[ 0x7f4fc8deb4b5]:
...python3.7/site-packages/p4p/../pvxslibs/lib/libpvxs.so.1.1(_ZN4pvxs6detail11_log_printfEjPKcz+0xa5)
[ 0x7f4fc8dadcf6]:
...python3.7/site-packages/p4p/../pvxslibs/lib/libpvxs.so.1.1(_ZN4pvxs4impl8ConnBase7bevReadEv+0x696)
[ 0x7f4fc8dae031]:
...python3.7/site-packages/p4p/../pvxslibs/lib/libpvxs.so.1.1(_ZN4pvxs4impl8ConnBase8bevReadSEP11buffereventPv+0x21)
[ 0x7f4fc871e432]:
...python3.7/site-packages/p4p/../pvxslibs/lib/./libevent_core.so.2.2.0(bufferevent_run_deferred_callbacks_locked+0x82)
[ 0x7f4fc8717db6]:
...python3.7/site-packages/p4p/../pvxslibs/lib/./libevent_core.so.2.2.0(event_process_active_single_queue.isra.33+0x446)
[ 0x7f4fc871875f]:
...python3.7/site-packages/p4p/../pvxslibs/lib/./libevent_core.so.2.2.0(event_base_loop+0x49f)
[ 0x7f4fc8e21e00]:
...python3.7/site-packages/p4p/../pvxslibs/lib/libpvxs.so.1.1(_ZN4pvxs4impl6evbase3Pvt3runEv+0x160)
[ 0x7f4fc8b17f69]:
...python3.7/site-packages/p4p/../epicscorelibs/lib/libCom.so.7.0.7.99.0(epicsThreadCallEntryPoint+0x69)
[ 0x7f4fc8b038da]:
...python3.7/site-packages/p4p/../epicscorelibs/lib/libCom.so.7.0.7.99.0(start_routine+0xda)
[ 0x7f4fcb68bfa3]:
/lib/x86_64-linux-gnu/libpthread.so.0(start_thread+0xf3)
[ 0x7f4fcb3d306f]: /lib/x86_64-linux-gnu/libc.so.6(clone+0x3f)
2022-12-14 13:14:04 ConnP4P get IOC:m1.CNEN ret=Enable time=1.01
2022-12-14 13:14:04 011:47 01102 enabled=True
.2022-12-14 13:14:04 011:53 011999 teardown_class
2022-12-14 13:14:04 TestUtil close() begin
2022-12-14 13:14:04 TestUtil close() done
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