Hi Enzo,
every parsed file is stored in a cache (unless you invoke adoptDocument
to decide to own its lifetime by yourself); the cache is emptied when
you call release() on the parser object. Your code doesn't release
neither the parser or the error handler; try printing the memory
allocated after you delete both objects.
Alberto
Enzo Arlati wrote:
I have xerces 2.7 on a redhat 7.3 and I have a memory leak of about 12
k when I run the parse() method of XercesDOMParser .
Belowe I copy the code involved.
Is there an error in the code or is this a bug ?
/*****************************************************************************************/
int
util_xerces::BuildDomParser( XercesDOMParser ** domParser )
{
int iret;
( *domParser ) = new XercesDOMParser;
( *domParser )->setValidationScheme( XercesDOMParser::Val_Auto );
( *domParser )->setDoNamespaces( false );
( *domParser )->setDoSchema( false );
( *domParser )->setValidationSchemaFullChecking( false );
( *domParser )->setCreateEntityReferenceNodes( true );
iret = IRET_OK;
return iret;
} // _________ void util_xerces::BuildDomParser( )
/*****************************************************************************************/
int
util_xerces::ParseXmlToDoc( string strXmlInp, DOMDocument ** pDoc )
{
XercesDOMParser *pDomParserInput = 0;
DOMTreeErrorReporter *errReporter = 0;
int iret = IRET_ERROR;
string Fun = "[ParseXmlToDoc] ";
*pDoc = 0;
//
--------------------------------------------------------------------------
util_xerces::BuildDomParser( &pDomParserInput );
errReporter = new DOMTreeErrorReporter( );
pDomParserInput->setErrorHandler( ( ErrorHandler * ) errReporter );
//
--------------------------------------------------------------------------
// strXmlInp is a short string like this : *"<Messaggio TipoMsg=\"S\"
/>"*
//
--------------------------------------------------------------------------
string sfile;
sfile = ae_util::format_string( "/var/log/xml/tmp_inp_%d.xml",
getpid( ) );
std::ofstream out_file( sfile.c_str( ) );
out_file << strXmlInp;
out_file.close( );
//
--------------------------------------------------------------------------
try
{
pDomParserInput->parse( sfile.c_str( ) );
* for( int ix = 0; ix < 5; ix++ )
{
MYLOG( Fun + ae_util::format_string( " memoria allocata = %d
", ae_util::MemoriaProcesso( 0 ) ));
pDomParserInput->parse( sfile.c_str( ) );
}*
unlink( sfile.c_str( ) );
}
catch( const XMLException & e )
{
MYERR( ae_util::
format_string( "[util_xerces::ParseXmlToDoc] XMLException
parse ERROR %s [XML:%s]",
S( e.getMessage( ) ).c_str( ),
strXmlInp.c_str( ) ) );
}
catch( const DOMException & e )
{
const unsigned int maxChars = 2047;
XMLCh errText[maxChars + 1];
char *sMsg;
if( DOMImplementation::loadDOMExceptionMsg( e.code, errText,
maxChars ) )
{
sMsg = XMLString::transcode( errText );
MYERR( ae_util::
format_string( "[util_xerces::ParseXmlToDoc] DOMException
parse ERROR %d -> %s ",
e.code, sMsg ) );
XMLString::release( &sMsg );
}
}
catch( ... )
{
MYERR( ae_util::format_string( "[util_xerces::ParseXmlToDoc] parse
ERROR [XML:%s]",
strXmlInp.c_str( ) ) );
}
................
------------------------------------------------------------------------
the output is as follow:
[][20090108_103115 PID:6682.6626] [TestMemoryLeak] START - memoria
allocata = 4184
[][20090108_103115 PID:6682.6626] [TestMemoryLeak]
InputMSG=[<Messaggio TipoMsg="S" />]
*[][20090108_103115 PID:6682.6626] [ParseXmlToDoc] memoria allocata =
4220
[][20090108_103115 PID:6682.6626] [ParseXmlToDoc] memoria allocata = 4232
[][20090108_103115 PID:6682.6626] [ParseXmlToDoc] memoria allocata = 4244
[][20090108_103115 PID:6682.6626] [ParseXmlToDoc] memoria allocata = 4256
[][20090108_103115 PID:6682.6626] [ParseXmlToDoc] memoria allocata =
4264*
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