neither the parser nor the membuf need to be heap-allocated.
this kind of coding style leaks memory in case of exceptions.
perhaps the process is leaking memory only on bad input.
regards
tobias
----- Original Message -----
From: "Abhinav Kishore Srivastava" <[email protected]>
To: <[email protected]>
Sent: Monday, June 15, 2009 12:55 PM
Subject: Regd issue : Memory leak in 'Parse' function of DOMParser
Hi,
There is a memory leak in the parse function of XercesDOMParser. Please find
below the details:
OS used: Solaris 10
Xerces version: 2.8.0
Software used: Rogue wave libraries for string functions.
Code Snippet which leaks:
RWCString xmlString;
XmlProcessData m_xmlDocData;
ParserErrorHandler* m_errorHandler;
int errorCount = 0;
m_domParser = new XercesDOMParser();
RWCString schemaLocationsString;
bool noNameSpace;
m_xmlDocData.GetSchemaLocation(schemaLocationsString,
noNameSpace)
m_domParser->setExternalSchemaLocation(schemaLocationsString);
m_domParser->setValidationSchemaFullChecking(false);
XercesDOMParser::ValSchemes valScheme;
if (m_xmlDocData.GetXsdValidationLevel() ==
XmlProcessData::VALIDATION_OFF)
valScheme =
XercesDOMParser::Val_Never;
else if
(m_xmlDocData.GetXsdValidationLevel() == XmlProcessData::VALIDATION_ON)
valScheme =
XercesDOMParser::Val_Always;
else
valScheme =
XercesDOMParser::Val_Auto;
m_domParser->setValidationScheme(valScheme);
m_domParser->setDoNamespaces(true); //
optional
m_domParser->setDoSchema(true);
m_domParser->setErrorHandler(m_errorHandler);
}
RWCString theString = xmlbuffer;
m_errorHandler->resetErrors();
MemBufInputSource* membuf;
membuf = new MemBufInputSource(
(const
XMLByte*)theString.data(), strlen(theString.data()),
"APIXMLInterface",false);
const unsigned long startMillis =
XMLPlatformUtils::getCurrentMillis();
m_domParser->parse(*membuf); //memory
utilization increases here and later on when delete m_domParser is called,
it is not released.
const unsigned long endMillis =
XMLPlatformUtils::getCurrentMillis();
unsigned long duration = endMillis -
startMillis;
m_doc = m_domParser->getDocument();
delete membuf;
membuf = 0;
delete m_domParser;
m_domParser = 0;
Can anyone suggest why is the memory leak happening and what can be done to
prevent this.
Thanks and Regards,
Abhinav Kishore
GTCS- ASG
Desk:+91 20 22970170
Mob:0-9689942815
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