Hi Roger, I'm attaching a simple program (m1-pub.py), the code consistently crashes with current tip (hg id -> 6afb79f716f8+ (0.16) tip) whereas I have no problems with the client-thread branch (hg id -> 7bd20a9245f1+ (client-thread)), meaning the code publishes 20k messages with no issues.
Not sure if it's expected? I'm not sure what sort of thread safety is there guaranteed, maybe I'm totally off with my code? Cheers! *** glibc detected *** python: double free or corruption (fasttop): 0x0000000002ae8f70 *** ======= Backtrace: ========= /lib/x86_64-linux-gnu/libc.so.6(+0x78a8f)[0x7f317713aa8f] /lib/x86_64-linux-gnu/libc.so.6(cfree+0x73)[0x7f317713e8e3] /usr/lib/libmosquitto.so.0(+0x2d9d)[0x7f31765e9d9d] /usr/lib/libmosquitto.so.0(mosquitto_loop+0x15b)[0x7f31765e8dab] ** Attachment added: "m1-pub.py" https://bugs.launchpad.net/mosquitto/+bug/842324/+attachment/2768387/+files/m1-pub.py -- You received this bug notification because you are a member of Mosquitto Development, which is subscribed to mosquitto. https://bugs.launchpad.net/bugs/842324 Title: python mqtt library seems not thread safe Status in mosquitto: an mqtt message broker: Fix Committed Bug description: python mqtt library version: 0.12 python version: 2.7.1 when i call python mqtt functions in multi threads, it is crashed or throw exception sometimes. for example, in every thread, do this: new mqtt object connect loop several times sometimes the program is crashed silently, sometimes i get this exception: Traceback (most recent call last): File "_ctypes/callbacks.c", line 313, in 'calling callback function' File "/usr/lib/pymodules/python2.7/mosquitto.py", line 353, in _internal_on_message topic = message.contents.topic ValueError: NULL pointer access To manage notifications about this bug go to: https://bugs.launchpad.net/mosquitto/+bug/842324/+subscriptions -- Mailing list: https://launchpad.net/~mosquitto-devel Post to : [email protected] Unsubscribe : https://launchpad.net/~mosquitto-devel More help : https://help.launchpad.net/ListHelp
