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From Frank Quinn <fqu...@nyx.com>
Subject Memory Cleanup in Messenger
Date Thu, 12 Sep 2013 17:26:53 GMT
Hi Folks,

I have encountered what looks like a memory leak in messenger if someone could verify?

I have attached some code which runs under valgrind --leak-check=full to produce the following
output.

Can anyone verify if there is a way to clean this up or is this a leak in proton-c 0.5?

Cheers,
Frank

==21663== Memcheck, a memory error detector
==21663== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==21663== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==21663== Command: ./qpid_messenger_leak_repro
==21663==
Waiting on recv
==21663==
==21663== HEAP SUMMARY:
==21663==     in use at exit: 376,057 bytes in 3,417 blocks
==21663==   total heap usage: 4,110 allocs, 693 frees, 763,143 bytes allocated
==21663==
==21663== 142,153 (2,776 direct, 139,377 indirect) bytes in 1 blocks are definitely lost in
loss record 996 of 997
==21663==    at 0x4A0887C: malloc (vg_replace_malloc.c:270)
==21663==    by 0x4C232CF: pn_new (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C336AD: pn_connection (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C421EC: pn_messenger_connection (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C424DC: pn_messenger_tsync (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C42695: pn_messenger_sync (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C44301: pn_messenger_recv (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x400C43: qpidListenerThread (qpid_messenger_leak_repro.c:18)
==21663==    by 0x3702407D14: start_thread (pthread_create.c:308)
==21663==    by 0x37020F253C: clone (clone.S:114)
==21663==
==21663== 142,168 (2,776 direct, 139,392 indirect) bytes in 1 blocks are definitely lost in
loss record 997 of 997
==21663==    at 0x4A0887C: malloc (vg_replace_malloc.c:270)
==21663==    by 0x4C232CF: pn_new (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C336AD: pn_connection (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C421EC: pn_messenger_connection (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C42F48: pn_messenger_resolve (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C4310B: pn_messenger_link (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C4333C: pn_messenger_target (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x4C43DDE: pn_messenger_put (in /home/fquinn/lib/qpid-proton-0.5/lib64/libqpid-proton.so.2.0.0)
==21663==    by 0x400D40: main (qpid_messenger_leak_repro.c:79)
==21663==
==21663== LEAK SUMMARY:
==21663==    definitely lost: 5,552 bytes in 2 blocks
==21663==    indirectly lost: 278,769 bytes in 388 blocks
==21663==      possibly lost: 0 bytes in 0 blocks
==21663==    still reachable: 91,736 bytes in 3,027 blocks
==21663==         suppressed: 0 bytes in 0 blocks
==21663== Reachable blocks (those to which a pointer was found) are not shown.
==21663== To see them, rerun with: --leak-check=full --show-reachable=yes
==21663==
==21663== For counts of detected and suppressed errors, rerun with: -v
==21663== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 2 from 2)


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