[omniORB] [Q] deleting static _the_nil_ptr

[V S P]

Hello,
in the generate stub
there is a static pointer called

static _objref_<MYINTERFACENAME>* _the_nil_ptr = 0;

there is a new done on it,
but I cannot find delete

I am getting a mem leak report on that.
It appears to be a static pointer that gets newed only once,
so even if there is a leak it is not relevant (because it
does not release memory only when the dll/executable shuts down)

But just wanted to ask if others are seeing the same thing
(it would only show up as the only leak if you have a 'clean' shutdown
sequence, even
after exceptions are thrown).


thanks,
Vlad

[Duncan Grisby]

Post by V S P
in the generate stub
there is a static pointer called
static _objref_<MYINTERFACENAME>* _the_nil_ptr = 0;
there is a new done on it,
but I cannot find delete

The delete is done during the final clean-up that happens when the
omniORB library is unloaded. It only happens if you call
orb->destroy().

Post by V S P
I am getting a mem leak report on that.

What is reporting the leak? If something goes looking for leaks before
the omniORB library is unloaded, it will look as though it's leaked.

Cheers,

Duncan.

[V S P]

Hello

Thank you for the reply

I am using
http://dmoulding.googlepages.com/vld
Visual leak detector (probably the best free leak detector for VS 2008)

------------- the test case extract --------------
-- to see leaks must be executed from within VS studio --

#ifdef _DEBUG
#ifdef WIN32
#include <vld.h>
#endif
#endif

void startup (int argc, char** argv)
{
orb= CORBA::ORB_init(argc, argv);
try{
CORBA::Object_var obj =
orb->resolve_initial_references("OmniNameService");
assert (!CORBA::is_nil(obj.in()));
}
catch(CORBA::Exception& /*ex*/ ) {
//let it fall through
}
orb->destroy();
/* note that in
void
omniOrbORB::destroy()
{
if( _NP_is_nil() ) _CORBA_invoked_nil_pseudo_ref();

_NP_is_nil() evaluates to 'false'
*/


return;
}

int main (int argc, char** argv)
{

startup (argc,argv);

return 0;
}

------------------------------


I also enabled tracing to see if Omni is unloading
It appears to be be unloading

---------------------------------------
omniORB: (0) 2009-04-09 00:06:31.521000: Version: 4.1.3
omniORB: (0) 2009-04-09 00:06:31.521000: Distribution date: Tue Sep 23
10:43:28
BST 2008 dgrisby
omniORB: (0) 2009-04-09 00:06:31.631000: Warning: unable to create an
IPv6 socke
t. Unable to obtain the list of IPv6 interface addresses (10047).
omniORB: (0) 2009-04-09 00:06:31.631000: My addresses are:
omniORB: 192.168.0.100
omniORB: 127.0.0.1
omniORB: (0) 2009-04-09 00:06:31.631000: Maximum supported GIOP version
is 1.2
omniORB: (0) 2009-04-09 00:06:31.631000: Native char code sets: UTF-8
ISO-8859-1
.
omniORB: (0) 2009-04-09 00:06:31.631000: Transmission char code sets:
UTF-8(1.2)
UTF-8(1.1) ISO-8859-1(1.2) ISO-8859-1(1.1) ISO-8859-1(1.0).
omniORB: (0) 2009-04-09 00:06:31.631000: Native wide char code sets:
UTF-16.
omniORB: (0) 2009-04-09 00:06:31.631000: Transmission wide char code
sets: UTF-1
6(1.2).
omniORB: (0) 2009-04-09 00:06:31.631000: Information: the omniDynamic
library is
not linked.
omniORB: (0) 2009-04-09 00:06:31.631000: Current configuration is as
follows:
omniORB: DefaultInitRef (file) =
omniORB: DefaultInitRef (args) =
omniORB: InitRef = NameService=corbaname::localhost
omniORB: abortOnInternalError = 0
omniORB: abortOnNativeException = 0
omniORB: acceptBiDirectionalGIOP = 0
omniORB: acceptMisalignedTcIndirections = 0
omniORB: bootstrapAgentHostname =
omniORB: bootstrapAgentPort = 900
omniORB: clientCallTimeOutPeriod = 0
omniORB: clientConnectTimeOutPeriod = 0
omniORB: clientTransportRule = * unix,ssl,tcp
omniORB: configFile = C:\usr\home\bin\omniorb.cfg
omniORB: connectionWatchImmediate = 0
omniORB: connectionWatchPeriod = 50000
omniORB: copyValuesInLocalCalls = 1
omniORB: diiThrowsSysExceptions = 0
omniORB: dumpConfiguration = 1
omniORB: endPoint = giop:tcp::
omniORB: endPointPublish = addr
omniORB: giopMaxMsgSize = 2097152
omniORB: giopTargetAddressMode = KeyAddr
omniORB: id = omniORB4
omniORB: idleThreadTimeout = 10
omniORB: immediateAddressSwitch = 0
omniORB: inConScanPeriod = 180
omniORB: lcdMode = 0
omniORB: maxGIOPConnectionPerServer = 5
omniORB: maxGIOPVersion = 1.2
omniORB: maxInterleavedCallsPerConnection = 5
omniORB: maxServerThreadPerConnection = 100
omniORB: maxServerThreadPoolSize = 100
omniORB: maxSocketRecv = 131072
omniORB: maxSocketSend = 131072
omniORB: nativeCharCodeSet = ISO-8859-1
omniORB: nativeWCharCodeSet = UTF-16
omniORB: objectTableSize = 0
omniORB: offerBiDirectionalGIOP = 0
omniORB: oneCallPerConnection = 1
omniORB: outConScanPeriod = 120
omniORB: poaHoldRequestTimeout = 0
omniORB: poaUniquePersistentSystemIds = 1
omniORB: principal = [Null]
omniORB: resetTimeOutOnRetries = 0
omniORB: scanGranularity = 5
omniORB: serverCallTimeOutPeriod = 0
omniORB: serverTransportRule = * unix,ssl,tcp
omniORB: socketSendBuffer = 16384
omniORB: strictIIOP = 1
omniORB: supportBootstrapAgent = 0
omniORB: supportCurrent = 1
omniORB: supportPerThreadTimeOut = 0
omniORB: tcAliasExpand = 0
omniORB: threadPerConnectionLowerLimit = 9000
omniORB: threadPerConnectionPolicy = 1
omniORB: threadPerConnectionUpperLimit = 10000
omniORB: threadPoolWatchConnection = 1
omniORB: traceExceptions = 1
omniORB: traceFile = [stderr]
omniORB: traceInvocationReturns = 1
omniORB: traceInvocations = 1
omniORB: traceLevel = 40
omniORB: traceThreadId = 1
omniORB: traceTime = 1
omniORB: unixTransportDirectory = /tmp/omni-%u
omniORB: unixTransportPermission = 777
omniORB: useTypeCodeIndirections = 1
omniORB: validateUTF8 = 0
omniORB: verifyObjectExistsAndType = 1
omniORB: (0) 2009-04-09 00:06:31.631000: Creating ref to remote:
key<NameService
target id : IDL:omg.org/CORBA/Object:1.0
most derived id:
omniORB: (0) 2009-04-09 00:06:31.631000: Initial reference `NameService'
resolve
d from configuration file.
3640 [0x00000e24] INFO disp_otrq null - Starting thread scheduler(this
is from my stuff not from Omni)
omniORB: (0) 2009-04-09 00:06:31.631000: Preparing to shutdown ORB.
omniORB: (0) 2009-04-09 00:06:31.631000: Disable ObjRef()
key<NameService>
3640 [omniORB: (0) 2009-04-09 00:06:31.631000: omniRemoteIdentity
deleted.
omniORB: (0) 2009-04-09 00:06:31.631000: 1 object reference present at
ORB shutd
own.
omniORB: (0) 2009-04-09 00:06:31.631000: ORB shutdown is complete.
0x0omniORB: (0) 2009-04-09 00:06:31.631000: ObjRef() -- deleted.
omniORB: (0) 2009-04-09 00:06:31.631000: Terminate strand scavenger.
omniORB: (0) 2009-04-09 00:06:31.631000: Close remaining strands.
000omniORB: (0) 2009-04-09 00:06:31.631000: 0 remaining bidir ropes
deleted.
omniORB: (0) 2009-04-09 00:06:31.631000: 0 remaining ropes deleted.
omniORB: (0) 2009-04-09 00:06:31.631000: Clear endPoint options.
0d2omniORB: (0) 2009-04-09 00:06:31.631000: AsyncInvoker: deleted.


------------------------------------------ end of trace




Vlad

Post by Duncan Grisby

Post by V S P
in the generate stub
there is a static pointer called
static _objref_<MYINTERFACENAME>* _the_nil_ptr = 0;
there is a new done on it,
but I cannot find delete

The delete is done during the final clean-up that happens when the
omniORB library is unloaded. It only happens if you call
orb->destroy().

Post by V S P
I am getting a mem leak report on that.

What is reporting the leak? If something goes looking for leaks before
the omniORB library is unloaded, it will look as though it's leaked.
Cheers,
Duncan.
--
-- Duncan Grisby --
-- http://www.grisby.org --

[V S P]

Hi Duncan
I think you were correct and I was wrong

The debugging tool finishes tracing before the main exit,
however i looks like when I run outside of the debugger, the omniOrb
does
more unloading (even after the call to orb->destroy)
and in that trace I see
-----

omniORB: (0) 2009-04-09 00:44:02.974000: Final clean-up
omniORB: (0) 2009-04-09 00:44:02.974000: Deleted 3 nil object references
and 0 o
ther tracked objects.
omniORB: (0) 2009-04-09 00:44:02.974000: Final clean-up completed.

-----

so this is probably deleting those statics and the memleak checker is
done by that time...

I did not see this trace before as my console window was closing right
before the exit.

Vlad

Post by V S P
Hello
Thank you for the reply
I am using
http://dmoulding.googlepages.com/vld
Visual leak detector (probably the best free leak detector for VS 2008)
------------- the test case extract --------------
-- to see leaks must be executed from within VS studio --
#ifdef _DEBUG
#ifdef WIN32
#include <vld.h>
#endif
#endif
void startup (int argc, char** argv)
{
orb= CORBA::ORB_init(argc, argv);
try{
CORBA::Object_var obj =
orb->resolve_initial_references("OmniNameService");
assert (!CORBA::is_nil(obj.in()));
}
catch(CORBA::Exception& /*ex*/ ) {
//let it fall through
}
orb->destroy();
/* note that in
void
omniOrbORB::destroy()
{
if( _NP_is_nil() ) _CORBA_invoked_nil_pseudo_ref();
_NP_is_nil() evaluates to 'false'
*/
return;
}
int main (int argc, char** argv)
{
startup (argc,argv);
return 0;
}
------------------------------
I also enabled tracing to see if Omni is unloading
It appears to be be unloading
---------------------------------------
omniORB: (0) 2009-04-09 00:06:31.521000: Version: 4.1.3
omniORB: (0) 2009-04-09 00:06:31.521000: Distribution date: Tue Sep 23
10:43:28
BST 2008 dgrisby
omniORB: (0) 2009-04-09 00:06:31.631000: Warning: unable to create an
IPv6 socke
t. Unable to obtain the list of IPv6 interface addresses (10047).
omniORB: 192.168.0.100
omniORB: 127.0.0.1
omniORB: (0) 2009-04-09 00:06:31.631000: Maximum supported GIOP version
is 1.2
omniORB: (0) 2009-04-09 00:06:31.631000: Native char code sets: UTF-8
ISO-8859-1
.
UTF-8(1.2)
UTF-8(1.1) ISO-8859-1(1.2) ISO-8859-1(1.1) ISO-8859-1(1.0).
UTF-16.
omniORB: (0) 2009-04-09 00:06:31.631000: Transmission wide char code
sets: UTF-1
6(1.2).
omniORB: (0) 2009-04-09 00:06:31.631000: Information: the omniDynamic
library is
not linked.
omniORB: (0) 2009-04-09 00:06:31.631000: Current configuration is as
omniORB: DefaultInitRef (file) =
omniORB: DefaultInitRef (args) =
omniORB: InitRef = NameService=corbaname::localhost
omniORB: abortOnInternalError = 0
omniORB: abortOnNativeException = 0
omniORB: acceptBiDirectionalGIOP = 0
omniORB: acceptMisalignedTcIndirections = 0
omniORB: bootstrapAgentHostname =
omniORB: bootstrapAgentPort = 900
omniORB: clientCallTimeOutPeriod = 0
omniORB: clientConnectTimeOutPeriod = 0
omniORB: clientTransportRule = * unix,ssl,tcp
omniORB: configFile = C:\usr\home\bin\omniorb.cfg
omniORB: connectionWatchImmediate = 0
omniORB: connectionWatchPeriod = 50000
omniORB: copyValuesInLocalCalls = 1
omniORB: diiThrowsSysExceptions = 0
omniORB: dumpConfiguration = 1
omniORB: endPointPublish = addr
omniORB: giopMaxMsgSize = 2097152
omniORB: giopTargetAddressMode = KeyAddr
omniORB: id = omniORB4
omniORB: idleThreadTimeout = 10
omniORB: immediateAddressSwitch = 0
omniORB: inConScanPeriod = 180
omniORB: lcdMode = 0
omniORB: maxGIOPConnectionPerServer = 5
omniORB: maxGIOPVersion = 1.2
omniORB: maxInterleavedCallsPerConnection = 5
omniORB: maxServerThreadPerConnection = 100
omniORB: maxServerThreadPoolSize = 100
omniORB: maxSocketRecv = 131072
omniORB: maxSocketSend = 131072
omniORB: nativeCharCodeSet = ISO-8859-1
omniORB: nativeWCharCodeSet = UTF-16
omniORB: objectTableSize = 0
omniORB: offerBiDirectionalGIOP = 0
omniORB: oneCallPerConnection = 1
omniORB: outConScanPeriod = 120
omniORB: poaHoldRequestTimeout = 0
omniORB: poaUniquePersistentSystemIds = 1
omniORB: principal = [Null]
omniORB: resetTimeOutOnRetries = 0
omniORB: scanGranularity = 5
omniORB: serverCallTimeOutPeriod = 0
omniORB: serverTransportRule = * unix,ssl,tcp
omniORB: socketSendBuffer = 16384
omniORB: strictIIOP = 1
omniORB: supportBootstrapAgent = 0
omniORB: supportCurrent = 1
omniORB: supportPerThreadTimeOut = 0
omniORB: tcAliasExpand = 0
omniORB: threadPerConnectionLowerLimit = 9000
omniORB: threadPerConnectionPolicy = 1
omniORB: threadPerConnectionUpperLimit = 10000
omniORB: threadPoolWatchConnection = 1
omniORB: traceExceptions = 1
omniORB: traceFile = [stderr]
omniORB: traceInvocationReturns = 1
omniORB: traceInvocations = 1
omniORB: traceLevel = 40
omniORB: traceThreadId = 1
omniORB: traceTime = 1
omniORB: unixTransportDirectory = /tmp/omni-%u
omniORB: unixTransportPermission = 777
omniORB: useTypeCodeIndirections = 1
omniORB: validateUTF8 = 0
omniORB: verifyObjectExistsAndType = 1
key<NameService
target id : IDL:omg.org/CORBA/Object:1.0
omniORB: (0) 2009-04-09 00:06:31.631000: Initial reference `NameService'
resolve
d from configuration file.
3640 [0x00000e24] INFO disp_otrq null - Starting thread scheduler(this
is from my stuff not from Omni)
omniORB: (0) 2009-04-09 00:06:31.631000: Preparing to shutdown ORB.
omniORB: (0) 2009-04-09 00:06:31.631000: Disable ObjRef()
key<NameService>
3640 [omniORB: (0) 2009-04-09 00:06:31.631000: omniRemoteIdentity
deleted.
omniORB: (0) 2009-04-09 00:06:31.631000: 1 object reference present at
ORB shutd
own.
omniORB: (0) 2009-04-09 00:06:31.631000: ORB shutdown is complete.
0x0omniORB: (0) 2009-04-09 00:06:31.631000: ObjRef() -- deleted.
omniORB: (0) 2009-04-09 00:06:31.631000: Terminate strand scavenger.
omniORB: (0) 2009-04-09 00:06:31.631000: Close remaining strands.
000omniORB: (0) 2009-04-09 00:06:31.631000: 0 remaining bidir ropes
deleted.
omniORB: (0) 2009-04-09 00:06:31.631000: 0 remaining ropes deleted.
omniORB: (0) 2009-04-09 00:06:31.631000: Clear endPoint options.
0d2omniORB: (0) 2009-04-09 00:06:31.631000: AsyncInvoker: deleted.
------------------------------------------ end of trace
Vlad

Post by Duncan Grisby

Post by V S P
in the generate stub
there is a static pointer called
static _objref_<MYINTERFACENAME>* _the_nil_ptr = 0;
there is a new done on it,
but I cannot find delete

The delete is done during the final clean-up that happens when the
omniORB library is unloaded. It only happens if you call
orb->destroy().

Post by V S P
I am getting a mem leak report on that.

What is reporting the leak? If something goes looking for leaks before
the omniORB library is unloaded, it will look as though it's leaked.
Cheers,
Duncan.
--
-- Duncan Grisby --
-- http://www.grisby.org --

--
V S P
--
http://www.fastmail.fm - Faster than the air-speed velocity of an
unladen european swallow
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