1 files changed, 20 insertions, 23 deletions

diff --git a/qmake/tools/qcomlibrary.cpp b/qmake/tools/qcomlibrary.cpp
index a7162fc..2a1b75a 100644
--- a/qmake/tools/qcomlibrary.cpp
+++ b/qmake/tools/qcomlibrary.cpp
@@ -42,48 +42,52 @@
 #include <qdatetime.h>
 #include <qcleanuphandler.h>
 #include <errno.h>
 
 #ifdef QT_THREAD_SUPPORT
 #  include "qmutexpool_p.h"
 #endif // QT_THREAD_SUPPORT
 
 #ifndef QT_DEBUG_COMPONENT
 # if defined(QT_DEBUG)
 #  define QT_DEBUG_COMPONENT 1
 # endif
 #endif
 
 
 QComLibrary::QComLibrary( const QString &filename )
     : QLibrary( filename ), entry( 0 ), libiface( 0 ), qt_version( 0 )
 {
 }
 
 QComLibrary::~QComLibrary()
 {
     if ( autoUnload() )
 	unload();
+    if ( libiface )
+	libiface->release();
+    if ( entry )
+	entry->release();
 }
 
 bool QComLibrary::unload()
 {
     if ( libiface ) {
 	libiface->cleanup();
 	if ( !libiface->canUnload() )
 	    return FALSE;
 	libiface->release();
 	libiface = 0;
     }
     int refs = entry ? entry->release() : 0;
     if ( refs )
 	return FALSE;
 
     entry = 0;
 
     return QLibrary::unload();
 }
 
 static bool qt_verify( const QString& library, uint version, uint flags,
 		    const QCString &key, bool warn )
 {
     uint our_flags = 1;
@@ -370,123 +374,116 @@ static bool qt_unix_query( const QString &library, uint *version, uint *flags,
 
 #endif // Q_OS_UNIX
 
 
 static QSettings *cache = 0;
 static QSingleCleanupHandler<QSettings> cleanup_cache;
 
 void QComLibrary::createInstanceInternal()
 {
     if ( library().isEmpty() )
 	return;
 
     QFileInfo fileinfo( library() );
     QString lastModified  = fileinfo.lastModified().toString();
     QString regkey = QString("/Qt Plugins %1.%2/%3")
 		     .arg( ( QT_VERSION & 0xff0000 ) >> 16 )
 		     .arg( ( QT_VERSION & 0xff00 ) >> 8 )
 		     .arg( library() );
     QStringList reg;
     uint flags = 0;
     QCString key;
     bool query_done = FALSE;
     bool warn_mismatch = TRUE;
 
-    if ( ! query_done ) {
-
 #ifdef QT_THREAD_SUPPORT
-	QMutexLocker locker( qt_global_mutexpool->get( &cache ) );
+    QMutexLocker locker( qt_global_mutexpool ?
+			 qt_global_mutexpool->get( &cache ) : 0 );
 #endif // QT_THREAD_SUPPORT
 
-	if ( ! cache ) {
-	    cache = new QSettings;
-	    cache->insertSearchPath( QSettings::Windows, "/Trolltech" );
-	    cleanup_cache.set( &cache );
-	}
+    if ( ! cache ) {
+	cache = new QSettings;
+	cache->insertSearchPath( QSettings::Windows, "/Trolltech" );
+	cleanup_cache.set( &cache );
+    }
 
-	reg = cache->readListEntry( regkey );
-	if ( reg.count() == 4 ) {
-	    // check timestamp
-	    if ( lastModified == reg[3] ) {
-		qt_version = reg[0].toUInt(0, 16);
-		flags = reg[1].toUInt(0, 16);
-		key = reg[2].latin1();
+    reg = cache->readListEntry( regkey );
+    if ( reg.count() == 4 ) {
+	// check timestamp
+	if ( lastModified == reg[3] ) {
+	    qt_version = reg[0].toUInt(0, 16);
+	    flags = reg[1].toUInt(0, 16);
+	    key = reg[2].latin1();
 
-		query_done = TRUE;
-		warn_mismatch = FALSE;
-	    }
+	    query_done = TRUE;
+	    warn_mismatch = FALSE;
 	}
     }
 
 #if defined(Q_OS_UNIX)
     if ( ! query_done ) {
 	// get the query information directly from the plugin without loading
 	if ( qt_unix_query( library(), &qt_version, &flags, &key ) ) {
  	    // info read succesfully from library
  	    query_done = TRUE;
 	}
     }
 #else // !Q_OS_UNIX
     if ( ! query_done ) {
 	// get the query information by loading the plugin
 	if ( !isLoaded() ) {
 	    Q_ASSERT( entry == 0 );
 	    if ( !load() )
 		return;
 	}
 
 #  ifdef Q_CC_BOR
 	typedef const char * __stdcall (*UCMQueryVerificationDataProc)();
 #  else
 	typedef const char * (*UCMQueryVerificationDataProc)();
 #  endif
 	UCMQueryVerificationDataProc ucmQueryVerificationdataProc;
 	ucmQueryVerificationdataProc =
 	    (UCMQueryVerificationDataProc) resolve( "qt_ucm_query_verification_data" );
 
 	if ( !ucmQueryVerificationdataProc ||
 	     !qt_parse_pattern( ucmQueryVerificationdataProc(),
 				&qt_version, &flags, &key ) ) {
 	    qt_version = flags = 0;
 	    key = "unknown";
 	} else {
 	    query_done = TRUE;
 	}
     }
 #endif // Q_OS_UNIX
 
     QStringList queried;
     queried << QString::number( qt_version,16 )
 	    << QString::number( flags, 16 )
 	    <<  key
 	    << lastModified;
 
     if ( queried != reg ) {
-
-#ifdef QT_THREAD_SUPPORT
-	QMutexLocker locker( qt_global_mutexpool->get( &cache ) );
-#endif // QT_THREAD_SUPPORT
-
 	cache->writeEntry( regkey, queried );
 	// delete the cache, which forces the settings to be written
 	delete cache;
 	cache = 0;
     }
 
     if ( ! query_done ) {
 	if ( warn_mismatch ) {
 	    qWarning( "Conflict in %s:\n Plugin cannot be queried successfully!",
 		      (const char*) QFile::encodeName( library() ) );
 	}
 	unload();
 	return;
     }
 
     if ( ! qt_verify( library(), qt_version, flags, key, warn_mismatch ) ) {
 	unload();
 	return;
     } else if ( !isLoaded() ) {
 	Q_ASSERT( entry == 0 );
 	if ( !load() )
 	    return;
     }