some deep changes to xml++ in which we retain a C-level xmlDocPtr as a member of an XMLTree objects. this allows us to do repeated XPATH searches (as in the midnam parser of libmidi++) without constantly rewriting an entire tree into memory to recreate a new xmlDocPtr with which we can search. Since XMLTree objects don't typically stay around for very long, just when serializing to/from disk, this is not anticipated to have much (if any) impact on memory consumption

git-svn-id: svn://localhost/ardour2/branches/3.0@11733 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 3 insertions, 1 deletions

diff --git a/libs/pbd/pbd/xml++.h b/libs/pbd/pbd/xml++.h
index 6b6ba34f6d..9c3782e3c2 100644
--- a/libs/pbd/pbd/xml++.h
+++ b/libs/pbd/pbd/xml++.h
@@ -60,11 +60,14 @@ public:
 
 	const std::string& write_buffer() const;
 
+	boost::shared_ptr<XMLSharedNodeList> find(const std::string xpath, XMLNode* = 0) const;
+
 private:
 	bool read_internal(bool validate);
 	
 	std::string _filename;
 	XMLNode*    _root;
+	xmlDocPtr   _doc;
 	int         _compression;
 };
 
@@ -90,7 +93,6 @@ public:
 	XMLNode* add_child_copy(const XMLNode&);
 	void     add_child_nocopy(XMLNode&);
 
-	boost::shared_ptr<XMLSharedNodeList> find(const std::string xpath) const;
 	std::string attribute_value();
 
 	const XMLPropertyList& properties() const { return _proplist; }