Subj : How to remove dynamically created properties
To   : netscape.public.mozilla.jseng
From : Lukas Ramach
Date : Mon Nov 08 2004 01:40 pm

Hello!

I'm trying to get rid of memory leaks in my application. I dynamically 
set XPCOM objects as properties in javascripts and delete them again. 
The objects are addrefed when defined as property but never removed any 
more.


*) I set properties doing the following:

// pPropertyObject is an nsISupports*

nsCOMPtr<nsIXPConnect> m_pXpc;
m_pXpc = do_GetService (nsIXPConnect::GetCID(), &nsr);

// WrapNative addrefs by 2
nsCOMPtr<nsIXPConnectJSObjectHolder> pHolder;
nsr = m_pXpc->WrapNative (m_pContext,
m_pGlobalObject,
pPropertyObject,
*pPropertyInterfaceID,
getter_AddRefs (pHolder));

JSObject* pJSObject;
pHolder->GetJSObject(&pJSObject);

jsval aJSValue = OBJECT_TO_JSVAL(pJSObject);

nsAString::const_iterator cit;
JS_SetUCProperty (m_pContext,
m_pGlobalObject,
sPropertyName.BeginReading (cit).start (),
sPropertyName.Length(),
pPropertyValue));


*) and I remove it again calling:

JS_DeleteUCProperty2 (m_pContext,
m_pGlobalObject,
sPropertyName.BeginReading (cit).start(),
sPropertyName.Length(),
&aJSValue));

Am I doing anything wrong?

Thanks,
Lukas

.