Tim Mayberry
e84fbfe6e5
It appears that there is no performance benefit from storing properties in a map for faster lookup or it is counteracted by the penalty of storing and maintaining the additional data structure. Timing results before changes with an optimized build: XMLTest::testPerfMediumXMLDocumentTiming Create : Count: 10 Min: 41293 Max: 63746 Total: 564448 Avg: 56444 (56 msecs) Write : Count: 10 Min: 42932 Max: 49221 Total: 453955 Avg: 45395 (45 msecs) Read : Count: 10 Min: 80160 Max: 84678 Total: 824506 Avg: 82450 (82 msecs) XMLTest::testPerfLargeXMLDocumentTiming Create : Count: 10 Min: 228759 Max: 420236 Total: 3587597 Avg: 358759 (358 msecs) Write : Count: 10 Min: 307095 Max: 348767 Total: 3205704 Avg: 320570 (320 msecs) Read : Count: 10 Min: 572400 Max: 657219 Total: 5959630 Avg: 595963 (595 msecs) Perf results after changes: XMLTest::testPerfMediumXMLDocumentTiming Create : Count: 10 Min: 30610 Max: 42656 Total: 376672 Avg: 37667 (37 msecs) Write : Count: 10 Min: 42804 Max: 54277 Total: 460455 Avg: 46045 (46 msecs) Read : Count: 10 Min: 70364 Max: 85484 Total: 750909 Avg: 75090 (75 msecs) XMLTest::testPerfLargeXMLDocumentTiming Create : Count: 10 Min: 164360 Max: 356995 Total: 3064482 Avg: 306448 (306 msecs) Write : Count: 10 Min: 308655 Max: 372953 Total: 3226707 Avg: 322670 (322 msecs) Read : Count: 10 Min: 517243 Max: 541839 Total: 5289950 Avg: 528995 (528 msecs)
182 lines
5.7 KiB
C++
182 lines
5.7 KiB
C++
/*
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Copyright (C) 2012 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __XML_H
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#define __XML_H
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/* xml++.h
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* libxml++ and this file are copyright (C) 2000 by Ari Johnson, and
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* are covered by the GNU Lesser General Public License, which should be
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* included with libxml++ as the file COPYING.
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* Modified for Ardour and released under the same terms.
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*/
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#include <string>
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#include <vector>
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#include <cstdio>
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#include <cstdarg>
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#include <libxml/parser.h>
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#include <libxml/tree.h>
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#include <boost/shared_ptr.hpp>
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#include "pbd/libpbd_visibility.h"
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class XMLTree;
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class XMLNode;
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class XMLProperty;
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typedef std::vector<XMLNode *> XMLNodeList;
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typedef std::vector<boost::shared_ptr<XMLNode> > XMLSharedNodeList;
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typedef XMLNodeList::iterator XMLNodeIterator;
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typedef XMLNodeList::const_iterator XMLNodeConstIterator;
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typedef std::vector<XMLProperty*> XMLPropertyList;
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typedef XMLPropertyList::iterator XMLPropertyIterator;
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typedef XMLPropertyList::const_iterator XMLPropertyConstIterator;
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class LIBPBD_API XMLTree {
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public:
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XMLTree();
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XMLTree(const std::string& fn, bool validate = false);
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XMLTree(const XMLTree*);
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~XMLTree();
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XMLNode* root() const { return _root; }
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XMLNode* set_root(XMLNode* n) { return _root = n; }
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const std::string& filename() const { return _filename; }
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const std::string& set_filename(const std::string& fn) { return _filename = fn; }
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int compression() const { return _compression; }
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int set_compression(int);
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bool read() { return read_internal(false); }
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bool read(const std::string& fn) { set_filename(fn); return read_internal(false); }
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bool read_and_validate() { return read_internal(true); }
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bool read_and_validate(const std::string& fn) { set_filename(fn); return read_internal(true); }
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bool read_buffer(const std::string&);
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bool write() const;
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bool write(const std::string& fn) { set_filename(fn); return write(); }
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void debug (FILE*) const;
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const std::string& write_buffer() const;
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boost::shared_ptr<XMLSharedNodeList> find(const std::string xpath, XMLNode* = 0) const;
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private:
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bool read_internal(bool validate);
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std::string _filename;
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XMLNode* _root;
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xmlDocPtr _doc;
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int _compression;
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};
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class LIBPBD_API XMLNode {
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public:
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XMLNode(const std::string& name);
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XMLNode(const std::string& name, const std::string& content);
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XMLNode(const XMLNode& other);
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~XMLNode();
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XMLNode& operator= (const XMLNode& other);
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bool operator== (const XMLNode& other) const;
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bool operator!= (const XMLNode& other) const;
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const std::string& name() const { return _name; }
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bool is_content() const { return _is_content; }
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const std::string& content() const { return _content; }
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const std::string& set_content(const std::string&);
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XMLNode* add_content(const std::string& s = std::string());
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const XMLNodeList& children(const std::string& str = std::string()) const;
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XMLNode* child(const char*) const;
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XMLNode* add_child(const char *);
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XMLNode* add_child_copy(const XMLNode&);
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void add_child_nocopy(XMLNode&);
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std::string attribute_value();
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const XMLPropertyList& properties() const { return _proplist; }
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XMLProperty const * property(const char*) const;
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XMLProperty const * property(const std::string&) const;
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XMLProperty * property(const char*);
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XMLProperty * property(const std::string&);
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bool has_property_with_value (const std::string&, const std::string&) const;
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XMLProperty* add_property(const char* name, const std::string& value);
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XMLProperty* add_property(const char* name, const char* value = "");
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XMLProperty* add_property(const char* name, const long value);
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void remove_property(const std::string&);
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void remove_property_recursively(const std::string&);
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/** Remove all nodes with the name passed to remove_nodes */
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void remove_nodes(const std::string&);
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/** Remove and delete all nodes with the name passed to remove_nodes */
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void remove_nodes_and_delete(const std::string&);
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/** Remove and delete all nodes with property prop matching val */
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void remove_nodes_and_delete(const std::string& propname, const std::string& val);
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void dump (std::ostream &, std::string p = "") const;
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private:
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std::string _name;
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bool _is_content;
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std::string _content;
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XMLNodeList _children;
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XMLPropertyList _proplist;
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mutable XMLNodeList _selected_children;
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void clear_lists ();
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};
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class LIBPBD_API XMLProperty {
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public:
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XMLProperty(const std::string& n, const std::string& v = std::string());
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~XMLProperty();
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const std::string& name() const { return _name; }
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const std::string& value() const { return _value; }
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const std::string& set_value(const std::string& v) { return _value = v; }
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private:
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std::string _name;
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std::string _value;
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};
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class LIBPBD_API XMLException: public std::exception {
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public:
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explicit XMLException(const std::string msg) : _message(msg) {}
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virtual ~XMLException() throw() {}
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virtual const char* what() const throw() { return _message.c_str(); }
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private:
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std::string _message;
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};
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#endif /* __XML_H */
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