I can't eliminate a memory leak : While looping through the Inbox
Message list using GetFirst() .. GetNext()
I'm developing a Visual C++ application on NT Workstation 4.0
I tried using Purify to help debug this: it showed about a 500 byte leak
in GetNext() for every extra message beyond the 1st one (i.e., I get no
leaks when there's only 1 message in the inbox, but there seems to be a
leak for every call to GetNext() ). The Task manager indicates a growth
of about 4K for every pass through the Inbox.
This is not acceptable for our operating conditions.
I have a while (messages) loop embedded in a forever loop. I sleep a
user-specified delay between every loop cycle.
My purpose for the forever loop is to continuously monitor the inbox for
messages which come from various sources at random times.
I also tried the code from Knowledge base article Q171429 with the same
result. They use essentially the same logic, except they don't have the
forever loop. I close all the CDO objects, but do not logout or
disconnect the MAPI session each pass. Maybe I should do this
periodically?
==========================================================================
A modified excerpt from the KB Q171429 article:
....
for (;;)
{
// Create pointer to the Inbox Folder
FolderPtr pFolder = pSession->Inbox;
// Create pointer to the Messages Collection
MessagesPtr pMessages = pFolder->Messages;
// Acquire pointer and set properties of the MessageFilter
MessageFilterPtr pMsgFilt = pMessages->Filter;
pMsgFilt->Unread = (bool)TRUE;
// Get the first Message object after filter is applied
pAMessage = pMessages->GetFirst();
// Process contents of Folder
while (pAMessage != NULL)
{
// Display Properties
wprintf (L"%s::",
(const unsigned short *)
pAMessage->Subject.bstrVal);
// Get next Message
pAMessage = NULL;
pAMessage = pMessages->GetNext();
}
cout << endl << flush;
// Destroy the reference to the Inbox, Messages Collection,
// MessageFilter, and Message then reaquire them
pFolder = NULL;
pMessages = NULL;
pMsgFilt = NULL;
pAMessage = NULL;
cout << "Iteration #" << ++i << endl << flush;
Sleep (5000);
}
....
==========================================================================
Any ideas or insights would be greatly appreciated.
Also, what's the syntax to set the TimeLast property in a MessageFilter,
in C++? I don't believe this works:
pMsgFltr->TimeLast = "12/25/00";
Thanks for any help,
Will
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