[mdb-discuss] Reliable memory checking tool for C++ basedapplications?

[Pavesi, Valdemar (NSN - US/Boca Raton)]

Karel,


You can use  libumem/mdb .  I had debug 100cases of leaks in c++.

See one example: 1560 buffers  that will never be freed.



umem_alloc_32 leak: 1560 buffers, 32 bytes each, 49920 bytes total
            ADDR          BUFADDR        TIMESTAMP           THREAD
                            CACHE          LASTLOG         CONTENTS
         1a5c7e0          1a5b500     40234d3c720d                1
                           4b88a8           43e680                0
                 libumem.so.1`umem_cache_alloc_debug+0x12b
                 libumem.so.1`umem_cache_alloc+0xc8
                 libumem.so.1`umem_alloc+0xaf
 
libumem.so.1`malloc+0x2e
                 blablabla_snmp_subAgentCommon.so`MakeOctetString+0x9a
 
blablabla_snmp_subAgentCommon.so`MakeOctetStringFromText+0x8b
 
blablabla_snmp_subAgentZoneMgmt.so`k_usSrxEndpointEntry_get_slave+0x110f
 
blablabla_snmp_subAgentZoneMgmt.so`k_usSrxEndpointEntry_get+0xa5
 
blablabla_snmp_subAgentZoneMgmt.so`usSrxEndpointEntry_get+0xf9
                 0xfffffd7fef266884
 
blablabla_snmp_subAgentZoneMgmt.so`SADispatchMethodRequest+0x36
 
blablabla_snmp_subAgentZoneMgmt.so`SADefaultAction+0x23a
                 blablabla_snmp_subAgentZoneMgmt.so`DefaultAction+0x7d

 
blablabla_snmp_subAgentZoneMgmt.so`blablabla_snmp_SubAgentZoneMgmt_nativ
eSubAg
                 entMainLoop+0xd1








It works very well .


Thanks!
Valdemar




-----Original Message-----
From: mdb-discuss-boun...@opensolaris.org
[mailto:mdb-discuss-bounces at opensolaris.org] On Behalf Of ext Karel
Gardas
Sent: Tuesday, January 19, 2010 3:32 PM
To: mdb-discuss at opensolaris.org
Subject: [mdb-discuss] Reliable memory checking tool for C++
basedapplications?

Hello,

while developing C++ based applications on OS 2009.06 I'm curious if
there is any reliable tool I may use for checking memory leaks of my C++
libraries/applications. I've tried to use:

1) libumem/mdb -- this does not work, i.e. it reports none C++ memory
leak
2) librtc/dbx check -- this does not work, i.e. my program crashes
quickly when librtc is preloaded and its core file suggest it crashes on
SIGSEGV directly in RTC library
3) purify trial -- unsupported on SunOS 5.11

Strange or perhaps interesting thing is that I remember I've used
libumem successfully on SXDE 1/08 at its times and while developing the
same software, but now it's no go.

Do you have any idea what to try and how?

Thanks!
Karel
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