From 5e527213a2430bb3018e5eebd909aef294edf9b5 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Fri, 18 Dec 2020 18:48:46 +0300
Subject: Switch to build2

---
 xsd-examples/cxx/tree/performance/.gitignore       |   5 +
 xsd-examples/cxx/tree/performance/README           |  62 ++++++++
 xsd-examples/cxx/tree/performance/buildfile        |  36 +++++
 xsd-examples/cxx/tree/performance/driver.cxx       |  90 +++++++++++
 xsd-examples/cxx/tree/performance/gen.cxx          |  76 +++++++++
 xsd-examples/cxx/tree/performance/gen.testscript   |   9 ++
 xsd-examples/cxx/tree/performance/parsing.cxx      | 172 +++++++++++++++++++++
 .../cxx/tree/performance/serialization.cxx         | 132 ++++++++++++++++
 xsd-examples/cxx/tree/performance/test-50k.xml     |   1 +
 xsd-examples/cxx/tree/performance/test.xsd         |  49 ++++++
 xsd-examples/cxx/tree/performance/time.cxx         |  46 ++++++
 xsd-examples/cxx/tree/performance/time.hxx         | 110 +++++++++++++
 12 files changed, 788 insertions(+)
 create mode 100644 xsd-examples/cxx/tree/performance/.gitignore
 create mode 100644 xsd-examples/cxx/tree/performance/README
 create mode 100644 xsd-examples/cxx/tree/performance/buildfile
 create mode 100644 xsd-examples/cxx/tree/performance/driver.cxx
 create mode 100644 xsd-examples/cxx/tree/performance/gen.cxx
 create mode 100644 xsd-examples/cxx/tree/performance/gen.testscript
 create mode 100644 xsd-examples/cxx/tree/performance/parsing.cxx
 create mode 100644 xsd-examples/cxx/tree/performance/serialization.cxx
 create mode 100644 xsd-examples/cxx/tree/performance/test-50k.xml
 create mode 100644 xsd-examples/cxx/tree/performance/test.xsd
 create mode 100644 xsd-examples/cxx/tree/performance/time.cxx
 create mode 100644 xsd-examples/cxx/tree/performance/time.hxx

(limited to 'xsd-examples/cxx/tree/performance')

diff --git a/xsd-examples/cxx/tree/performance/.gitignore b/xsd-examples/cxx/tree/performance/.gitignore
new file mode 100644
index 0000000..b143f97
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/.gitignore
@@ -0,0 +1,5 @@
+gen
+
+# Testscript output directory (can be symlink).
+#
+test-gen
diff --git a/xsd-examples/cxx/tree/performance/README b/xsd-examples/cxx/tree/performance/README
new file mode 100644
index 0000000..0206387
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/README
@@ -0,0 +1,62 @@
+This example measures the performance of parsing and serialization in
+the C++/Tree mapping. It also shows how to structure your code to
+achieve the maximum performance for these two operations.
+
+The example consists of the following files:
+
+test.xsd
+  XML Schema which describes the test vocabulary.
+
+test-50k.xml
+  Test XML document.
+
+gen.cxx
+  Program to generate a test document of desired size.
+
+time.hxx
+time.cxx
+  Class definition that represents time.
+
+test.hxx
+test.ixx
+test.cxx
+  C++ types that represent the given vocabulary, a set of parsing
+  functions that convert XML documents to a tree-like in-memory object
+  model, and a set of serialization functions that convert the object
+  model back to XML. These are generated by the XSD compiler from
+  test.xsd.
+
+parsing.cxx
+  Parsing performance test. It first reads the entire document into
+  a memory buffer. It then creates a DOM parser and pre-parses and
+  caches the schema if validation is enabled. Finally, it runs the
+  performance measurement loop which on each iteration parses the
+  XML document from the in-memory buffer into DOM and then DOM to
+  the object model.
+
+serialization.cxx
+  Serialization performance test. It first parses the XML document
+  into the object model. It then creates a memory buffer into which
+  the document is serialized and a DOM serializer. Finally, it runs
+  the performance measurement loop which on each iteration serializes
+  the object model to DOM and DOM to XML.
+
+driver.cxx
+  Driver for the example. It first parses the command line arguments.
+  It then initializes the Xerces-C++ runtime and calls the parsing
+  and serialization tests described above.
+
+To run the example on a test XML document simply execute:
+
+$ ./driver test-50k.xml
+
+The -v option can be used to turn on validation in the underlying XML
+parser (off by default). The -i option can be used to specify the
+number of parsing and serialization iterations (1000 by default). For
+example:
+
+$ ./driver -v -i 100 test-50k.xml
+
+To generate the test document execute, for example:
+
+$ ./gen 633 test-100k.xml
diff --git a/xsd-examples/cxx/tree/performance/buildfile b/xsd-examples/cxx/tree/performance/buildfile
new file mode 100644
index 0000000..e9faeef
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/buildfile
@@ -0,0 +1,36 @@
+# file      : cxx/tree/performance/buildfile
+# license   : not copyrighted - public domain
+
+import libs  = libxsd%lib{xsd}
+import libs += libxerces-c%lib{xerces-c}
+
+./: doc{README}
+
+# exe{driver}
+#
+./: exe{driver}: {hxx cxx}{* -gen -test} {hxx ixx cxx}{test} $libs
+
+exe{driver}: xml{test-50k}: test.input = true
+
+<{hxx ixx cxx}{test}>: xsd{test} $xsd
+{{
+  diag xsd ($<[0]) # @@ TMP
+
+  $xsd cxx-tree --std c++11     \
+       --generate-inline        \
+       --generate-serialization \
+       --output-dir $out_base   \
+       $path($<[0])
+}}
+
+# exe{gen}
+#
+./: exe{gen}: cxx{gen} testscript{gen}
+
+# Build options.
+#
+cxx.poptions =+ "-I$out_base" "-I$src_base"
+
+# Define XSD_CXX11 since we include libxsd headers directly.
+#
+cxx.poptions += -DXSD_CXX11
diff --git a/xsd-examples/cxx/tree/performance/driver.cxx b/xsd-examples/cxx/tree/performance/driver.cxx
new file mode 100644
index 0000000..b156f84
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/driver.cxx
@@ -0,0 +1,90 @@
+// file      : cxx/tree/performance/driver.cxx
+// copyright : not copyrighted - public domain
+
+#include <string>
+#include <sstream>
+#include <iostream>
+
+#include <xercesc/util/PlatformUtils.hpp>
+
+using namespace std;
+
+// See parsing.cxx
+//
+bool
+parsing (const char* file, unsigned long iter, bool validate);
+
+// See serialization.cxx
+//
+bool
+serialization (const char* file, unsigned long iter);
+
+int
+main (int argc, char* argv[])
+{
+  if (argc < 2)
+  {
+    cerr << "usage: " << argv[0] << " [-v] [-i <count>] test.xml" << endl
+         << "\t -v turn on validation (default is off)" << endl
+         << "\t -i number of iterations to perform (default is 1000)" << endl;
+    return 1;
+  }
+
+  bool validate (false);
+  unsigned long iter (1000);
+  const char* file (0);
+
+  // Parse command line arguments.
+  //
+  for (int i (1); i < argc; ++i)
+  {
+    std::string arg (argv[i]);
+
+    if (arg == "-v")
+    {
+      validate = true;
+    }
+    else if (arg == "-i")
+    {
+      if (++i == argc)
+      {
+        cerr << "argument expected for the -i option" << endl;
+        return 1;
+      }
+
+      iter = 0;
+      istringstream is (argv[i]);
+      is >> iter;
+
+      if (iter == 0)
+      {
+        cerr << "invalid argument for the -i option" << endl;
+        return 1;
+      }
+    }
+    else
+    {
+      file = argv[i];
+      break;
+    }
+  }
+
+  if (file == 0)
+  {
+    cerr << "no input file specified" << endl;
+    return 1;
+  }
+
+  int r (0);
+
+  xercesc::XMLPlatformUtils::Initialize ();
+
+  // Call parsing and serialization tests.
+  //
+  if (!parsing (file, iter, validate) || !serialization (file, iter))
+    r = 1;
+
+  xercesc::XMLPlatformUtils::Terminate ();
+
+  return r;
+}
diff --git a/xsd-examples/cxx/tree/performance/gen.cxx b/xsd-examples/cxx/tree/performance/gen.cxx
new file mode 100644
index 0000000..b6392c0
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/gen.cxx
@@ -0,0 +1,76 @@
+#include <fstream>
+#include <sstream>
+#include <iostream>
+
+using namespace std;
+
+static const char* enums[] =
+{
+  "romance",
+  "fiction",
+  "horror",
+  "history",
+  "philosophy"
+};
+
+int
+main (int argc, char* argv[])
+{
+  if (argc != 3)
+  {
+    cerr << "usage: " << argv[0] << " <count> <output-file>" << endl;
+    return 1;
+  }
+
+  unsigned long n (0);
+  istringstream is (argv[1]);
+  is >> n;
+
+  if (n == 0)
+  {
+    cerr << "record count argument should be a positive number" << endl;
+    return 1;
+  }
+
+  ofstream ofs (argv[2]);
+
+  if (!ofs.is_open ())
+  {
+    cerr << "unable to open '" << argv[2] << "' in write mode" << endl;
+    return 1;
+  }
+
+  ofs << "<t:root xmlns:t='test' " <<
+    "xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' " <<
+    "xsi:schemaLocation='test test.xsd'>";
+
+  unsigned short ch (1), en (0);
+
+  for (unsigned long i (0); i < n; ++i)
+  {
+    ofs << "<record orange=\"" << i << "\"";
+
+    if (i % 2 == 0)
+      ofs << " apple=\"true\"";
+
+    ofs << ">"
+        << "<int>42</int>"
+        << "<double>42345.4232</double>"
+        << "<name>name123_45</name>";
+
+    if (i % 2 == 1)
+      ofs << "<string>one two three</string>";
+
+    ofs << "<choice" << ch << ">" << ch << " choice</choice" << ch << ">"
+        << "<enum>" << enums[en] << "</enum>"
+        << "</record>";
+
+    if (++ch > 4)
+      ch = 1;
+
+    if (++en > 4)
+      en = 0;
+  }
+
+  ofs << "</t:root>";
+}
diff --git a/xsd-examples/cxx/tree/performance/gen.testscript b/xsd-examples/cxx/tree/performance/gen.testscript
new file mode 100644
index 0000000..deefc05
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/gen.testscript
@@ -0,0 +1,9 @@
+# file      : cxx/tree/performance/gen.testscript
+# license   : not copyrighted - public domain
+
+: 50k
+:
+{
+  $* 317 test-50k.xml &test-50k.xml;
+  cat test-50k.xml >>>$src_base/test-50k.xml
+}
diff --git a/xsd-examples/cxx/tree/performance/parsing.cxx b/xsd-examples/cxx/tree/performance/parsing.cxx
new file mode 100644
index 0000000..c41b57d
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/parsing.cxx
@@ -0,0 +1,172 @@
+// file      : cxx/tree/performance/parsing.cxx
+// copyright : not copyrighted - public domain
+
+#include <memory>  // std::unique_ptr
+#include <cstddef> // std::size_t
+#include <fstream>
+#include <iostream>
+
+#include <xercesc/dom/DOM.hpp>
+#include <xercesc/dom/DOMLSParser.hpp>
+#include <xercesc/dom/DOMImplementation.hpp>
+#include <xercesc/dom/DOMImplementationRegistry.hpp>
+
+#include <xercesc/validators/common/Grammar.hpp>
+
+#include <xercesc/framework/MemBufInputSource.hpp>
+#include <xercesc/framework/Wrapper4InputSource.hpp>
+
+#include <xercesc/util/XMLUniDefs.hpp>
+
+#include <xsd/cxx/xml/dom/bits/error-handler-proxy.hxx>
+#include <xsd/cxx/tree/error-handler.hxx>
+
+#include "time.hxx"
+#include "test.hxx"
+
+using namespace std;
+
+bool
+parsing (const char* file, unsigned long iter, bool validate)
+{
+  try
+  {
+    cerr << "parsing:" << endl;
+
+    ifstream ifs;
+    ifs.exceptions (ios_base::failbit);
+    ifs.open (file, ios::in | ios::ate);
+
+    size_t size (ifs.tellg ());
+    ifs.seekg (0, ios::beg);
+
+    char* buf = new char[size];
+    ifs.read (buf, size);
+    ifs.close ();
+
+    cerr << "  document size:  " << size << " bytes" << endl
+         << "  iterations:     " << iter << endl;
+
+    // Create XML parser that we are going to use in all iterations.
+    //
+    using namespace xercesc;
+
+    const XMLCh ls_id[] =
+      {xercesc::chLatin_L, xercesc::chLatin_S, xercesc::chNull};
+
+    DOMImplementation* impl (
+      DOMImplementationRegistry::getDOMImplementation (ls_id));
+
+    // Use the error handler implementation provided by the XSD runtime.
+    //
+    xsd::cxx::tree::error_handler<char> eh;
+    xsd::cxx::xml::dom::bits::error_handler_proxy<char> ehp (eh);
+
+    xml_schema::dom::unique_ptr<DOMLSParser> parser (
+      impl->createLSParser (DOMImplementationLS::MODE_SYNCHRONOUS, 0));
+
+    DOMConfiguration* conf (parser->getDomConfig ());
+
+    conf->setParameter (XMLUni::fgDOMComments, false);
+    conf->setParameter (XMLUni::fgDOMDatatypeNormalization, true);
+    conf->setParameter (XMLUni::fgDOMEntities, false);
+    conf->setParameter (XMLUni::fgDOMNamespaces, true);
+    conf->setParameter (XMLUni::fgDOMElementContentWhitespace, false);
+
+    // Set error handler.
+    //
+    conf->setParameter (XMLUni::fgDOMErrorHandler, &ehp);
+
+    if (validate)
+    {
+      conf->setParameter (XMLUni::fgDOMValidate, true);
+      conf->setParameter (XMLUni::fgXercesSchema, true);
+      conf->setParameter (XMLUni::fgXercesSchemaFullChecking, false);
+
+      // Xerces-C++ 3.1.0 is the first version with working multi import
+      // support.
+      //
+#if _XERCES_VERSION >= 30100
+      conf->setParameter (XMLUni::fgXercesHandleMultipleImports, true);
+#endif
+
+      // If we are validating, pre-load and cache the schema.
+      //
+      if (!parser->loadGrammar ("test.xsd", Grammar::SchemaGrammarType, true))
+      {
+        // In Xerces-C++ grammar loading failure results in just a warning.
+        // Make it a fatal error.
+        //
+        eh.handle ("test.xsd", 0, 0,
+                   xsd::cxx::tree::error_handler<char>::severity::fatal,
+                   "unable to load schema");
+      }
+
+      eh.throw_if_failed<xml_schema::parsing> ();
+      conf->setParameter (XMLUni::fgXercesUseCachedGrammarInParse, true);
+      conf->setParameter (XMLUni::fgXercesLoadSchema, false);
+    }
+    else
+    {
+      conf->setParameter (XMLUni::fgDOMValidate, false);
+      conf->setParameter (XMLUni::fgXercesSchema, false);
+      conf->setParameter (XMLUni::fgXercesSchemaFullChecking, false);
+    }
+
+    conf->setParameter (XMLUni::fgXercesUserAdoptsDOMDocument, true);
+
+    // Create memory buffer input source.
+    //
+    MemBufInputSource is (
+      reinterpret_cast<XMLByte*> (buf), size, file, false);
+    is.setCopyBufToStream (false);
+    Wrapper4InputSource wis (&is, false);
+
+    // Parsing loop.
+    //
+    os::time start;
+
+    for (unsigned long i (0); i < iter; ++i)
+    {
+      // First parse XML to DOM reusing the parser we created above.
+      //
+      xml_schema::dom::unique_ptr<DOMDocument> doc (parser->parse (&wis));
+      eh.throw_if_failed<xml_schema::parsing> ();
+
+      // Then parse DOM to the object model.
+      //
+      unique_ptr<test::root> r (test::root_ (*doc));
+    }
+
+    os::time end;
+    os::time time (end - start);
+
+    delete[] buf;
+
+    cerr << "  time:           " << time << " sec" << endl;
+
+    double ms (time.sec () * 1000000ULL + time.nsec () / 1000ULL);
+
+    // Calculate throughput in documents/sec.
+    //
+    double tpd ((iter / ms) * 1000000);
+    cerr << "  throughput:     " << tpd << " documents/sec" << endl;
+
+    // Calculate throughput in MBytes/sec.
+    //
+    double tpb (((size * iter) / ms) * 1000000/(1024*1024));
+    cerr << "  throughput:     " << tpb << " MBytes/sec" << endl;
+  }
+  catch (const xml_schema::exception& e)
+  {
+    cerr << e << endl;
+    return false;
+  }
+  catch (std::ios_base::failure const&)
+  {
+    cerr << "io failure" << endl;
+    return false;
+  }
+
+  return true;
+}
diff --git a/xsd-examples/cxx/tree/performance/serialization.cxx b/xsd-examples/cxx/tree/performance/serialization.cxx
new file mode 100644
index 0000000..e81fcbd
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/serialization.cxx
@@ -0,0 +1,132 @@
+// file      : cxx/tree/performance/serialization.cxx
+// copyright : not copyrighted - public domain
+
+#include <memory>  // std::unique_ptr
+#include <cstddef> // std::size_t
+#include <sstream>
+#include <iostream>
+
+#include <xercesc/dom/DOM.hpp>
+#include <xercesc/dom/DOMLSOutput.hpp>
+#include <xercesc/dom/DOMLSSerializer.hpp>
+#include <xercesc/dom/DOMImplementation.hpp>
+#include <xercesc/dom/DOMImplementationRegistry.hpp>
+
+#include <xercesc/framework/MemBufFormatTarget.hpp>
+
+#include <xercesc/util/XMLUniDefs.hpp>
+
+#include <xsd/cxx/xml/dom/bits/error-handler-proxy.hxx>
+#include <xsd/cxx/tree/error-handler.hxx>
+
+#include "time.hxx"
+#include "test.hxx"
+
+using namespace std;
+
+bool
+serialization (const char* file, unsigned long iter)
+{
+  try
+  {
+    using namespace xercesc;
+
+    cerr << "serialization:" << endl;
+
+    // Get the object model using the standard parsing function.
+    //
+    unique_ptr<test::root> r (
+      test::root_ (file,
+                   xml_schema::flags::dont_initialize |
+                   xml_schema::flags::dont_validate));
+
+    // Serialize it to the in-memory buffer. This makes sure the buffer
+    // pre-allocates enough memory.
+    //
+    xml_schema::namespace_infomap map;
+    map["t"].name = "test";
+    map["t"].schema = "test.xsd";
+
+    MemBufFormatTarget ft (10240);
+    test::root_ (ft, *r, map, "UTF-8",
+                 xml_schema::flags::dont_initialize |
+                 xml_schema::flags::dont_pretty_print |
+                 xml_schema::flags::no_xml_declaration);
+
+    size_t size (ft.getLen ());
+    cerr << "  document size:  " << size << " bytes" << endl
+         << "  iterations:     " << iter << endl;
+
+    // Create XML serializer that we are going to use in all iterations.
+    //
+    const XMLCh ls_id[] =
+      {xercesc::chLatin_L, xercesc::chLatin_S, xercesc::chNull};
+
+    DOMImplementation* impl (
+      DOMImplementationRegistry::getDOMImplementation (ls_id));
+
+    // Use the error handler implementation provided by the XSD runtime.
+    //
+    xsd::cxx::tree::error_handler<char> eh;
+    xsd::cxx::xml::dom::bits::error_handler_proxy<char> ehp (eh);
+
+    xml_schema::dom::unique_ptr<DOMLSSerializer> writer (
+      impl->createLSSerializer ());
+
+    DOMConfiguration* conf (writer->getDomConfig ());
+
+    conf->setParameter (XMLUni::fgDOMErrorHandler, &ehp);
+    conf->setParameter (XMLUni::fgDOMXMLDeclaration, false);
+
+    xml_schema::dom::unique_ptr<DOMLSOutput> out (impl->createLSOutput ());
+
+    out->setByteStream (&ft);
+
+    // Serialization loop.
+    //
+    os::time start;
+
+    for (unsigned long i (0); i < iter; ++i)
+    {
+      // First serialize the object model to DOM.
+      //
+      xml_schema::dom::unique_ptr<DOMDocument> doc (test::root_ (*r, map));
+
+      ft.reset ();
+
+      // Then serialize DOM to XML reusing the serializer we created above.
+      //
+      writer->write (doc.get (), out.get ());
+      eh.throw_if_failed<xml_schema::serialization> ();
+    }
+
+    os::time end;
+    os::time time (end - start);
+
+    cerr << "  time:           " << time << " sec" << endl;
+
+    double ms (time.sec () * 1000000ULL + time.nsec () / 1000ULL);
+
+    // Calculate throughput in documents/sec.
+    //
+    double tpd ((iter / ms) * 1000000);
+    cerr << "  throughput:     " << tpd << " documents/sec" << endl;
+
+    // Calculate throughput in MBytes/sec.
+    //
+    double tpb (((size * iter) / ms) * 1000000/(1024*1024));
+    cerr << "  throughput:     " << tpb << " MBytes/sec" << endl;
+  }
+  catch (const xml_schema::exception& e)
+  {
+    cerr << e << endl;
+    return false;
+  }
+  catch (std::ios_base::failure const&)
+  {
+    cerr << "io failure" << endl;
+    return false;
+  }
+
+  return true;
+}
diff --git a/xsd-examples/cxx/tree/performance/test-50k.xml b/xsd-examples/cxx/tree/performance/test-50k.xml
new file mode 100644
index 0000000..42e22f3
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/test-50k.xml
@@ -0,0 +1 @@
+<t:root xmlns:t='test' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='test test.xsd'><record orange="0" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>romance</enum></record><record orange="1"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>fiction</enum></record><record orange="2" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>horror</enum></record><record orange="3"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>history</enum></record><record orange="4" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>philosophy</enum></record><record orange="5"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one 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choice</choice4><enum>horror</enum></record><record orange="288" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>history</enum></record><record orange="289"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>philosophy</enum></record><record orange="290" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>romance</enum></record><record orange="291"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>fiction</enum></record><record orange="292" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>horror</enum></record><record orange="293"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>history</enum></record><record orange="294" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>philosophy</enum></record><record orange="295"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>romance</enum></record><record orange="296" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>fiction</enum></record><record orange="297"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>horror</enum></record><record orange="298" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>history</enum></record><record orange="299"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>philosophy</enum></record><record orange="300" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>romance</enum></record><record orange="301"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>fiction</enum></record><record orange="302" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>horror</enum></record><record orange="303"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>history</enum></record><record orange="304" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>philosophy</enum></record><record orange="305"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>romance</enum></record><record orange="306" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>fiction</enum></record><record orange="307"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>horror</enum></record><record orange="308" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>history</enum></record><record orange="309"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>philosophy</enum></record><record orange="310" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>romance</enum></record><record orange="311"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>fiction</enum></record><record orange="312" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>horror</enum></record><record orange="313"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice2>2 choice</choice2><enum>history</enum></record><record orange="314" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice3>3 choice</choice3><enum>philosophy</enum></record><record orange="315"><int>42</int><double>42345.4232</double><name>name123_45</name><string>one two three</string><choice4>4 choice</choice4><enum>romance</enum></record><record orange="316" apple="true"><int>42</int><double>42345.4232</double><name>name123_45</name><choice1>1 choice</choice1><enum>fiction</enum></record></t:root>
\ No newline at end of file
diff --git a/xsd-examples/cxx/tree/performance/test.xsd b/xsd-examples/cxx/tree/performance/test.xsd
new file mode 100644
index 0000000..98ee921
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/test.xsd
@@ -0,0 +1,49 @@
+<?xml version="1.0"?>
+
+<!--
+
+file      : cxx/tree/performance/test.xsd
+copyright : not copyrighted - public domain
+
+-->
+
+<schema targetNamespace="test" xmlns:t="test"
+        xmlns="http://www.w3.org/2001/XMLSchema">
+
+  <simpleType name="enum">
+    <restriction base="string">
+      <enumeration value="romance"/>
+      <enumeration value="fiction"/>
+      <enumeration value="horror"/>
+      <enumeration value="history"/>
+      <enumeration value="philosophy"/>
+    </restriction>
+  </simpleType>
+
+  <complexType name="record">
+    <sequence>
+      <element name="int" type="unsignedInt"/>
+      <element name="double" type="double"/>
+      <element name="name" type="NCName"/>
+      <element name="string" type="string" minOccurs="0" maxOccurs="1"/>
+      <choice>
+        <element name="choice1" type="string"/>
+        <element name="choice2" type="string"/>
+        <element name="choice3" type="string"/>
+        <element name="choice4" type="string"/>
+      </choice>
+      <element name="enum" type="t:enum"/>
+    </sequence>
+    <attribute name="apple" type="boolean"/>
+    <attribute name="orange" type="unsignedLong" use="required"/>
+  </complexType>
+
+  <complexType name="root">
+    <sequence>
+      <element name="record" type="t:record" maxOccurs="unbounded"/>
+    </sequence>
+  </complexType>
+
+  <element name="root" type="t:root"/>
+
+</schema>
diff --git a/xsd-examples/cxx/tree/performance/time.cxx b/xsd-examples/cxx/tree/performance/time.cxx
new file mode 100644
index 0000000..48385a1
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/time.cxx
@@ -0,0 +1,46 @@
+// file      : cxx/tree/performance/time.cxx
+// copyright : not copyrighted - public domain
+
+#include "time.hxx"
+
+#if defined (WIN32) || defined (__WIN32__)
+#  define WIN32_LEAN_AND_MEAN
+#  include <windows.h>  // GetSystemTimeAsFileTime
+#else
+#  include <time.h>     // gettimeofday
+#  include <sys/time.h> // timeval
+#endif
+
+#include <ostream> // std::ostream
+#include <iomanip> // std::setfill, std::setw
+
+namespace os
+{
+  time::
+  time ()
+  {
+#if defined (WIN32) || defined (__WIN32__)
+    FILETIME ft;
+    GetSystemTimeAsFileTime (&ft);
+    unsigned long long v (
+      ((unsigned long long) (ft.dwHighDateTime) << 32) + ft.dwLowDateTime);
+
+    sec_  = static_cast<unsigned long> (v / 10000000ULL);
+    nsec_ = static_cast<unsigned long> ((v % 10000000ULL) * 100);
+#else
+    timeval tv;
+    if (gettimeofday(&tv, 0) != 0)
+      throw failed ();
+
+    sec_  = static_cast<unsigned long> (tv.tv_sec);
+    nsec_ = static_cast<unsigned long> (tv.tv_usec * 1000);
+#endif
+  }
+
+  std::ostream&
+  operator<< (std::ostream& o, time const& t)
+  {
+    return o << t.sec () << '.'
+             << std::setfill ('0') << std::setw (9) << t.nsec ();
+  }
+}
diff --git a/xsd-examples/cxx/tree/performance/time.hxx b/xsd-examples/cxx/tree/performance/time.hxx
new file mode 100644
index 0000000..b05414b
--- /dev/null
+++ b/xsd-examples/cxx/tree/performance/time.hxx
@@ -0,0 +1,110 @@
+// file      : cxx/tree/performance/time.hxx
+// copyright : not copyrighted - public domain
+
+#ifndef TIME_HXX
+#define TIME_HXX
+
+#include <iosfwd> // std::ostream&
+
+namespace os
+{
+  class time
+  {
+  public:
+    class failed {};
+
+    // Create a time object representing the current time.
+    //
+    time ();
+
+    time (unsigned long long nsec)
+    {
+      sec_  = static_cast<unsigned long> (nsec / 1000000000ULL);
+      nsec_ = static_cast<unsigned long> (nsec % 1000000000ULL);
+    }
+
+    time (unsigned long sec, unsigned long nsec)
+    {
+      sec_  = sec;
+      nsec_ = nsec;
+    }
+
+  public:
+    unsigned long
+    sec () const
+    {
+      return sec_;
+    }
+
+    unsigned long
+    nsec () const
+    {
+      return nsec_;
+    }
+
+  public:
+    class overflow {};
+    class underflow {};
+
+    time
+    operator+= (time const& b)
+    {
+      unsigned long long tmp = 0ULL + nsec_ + b.nsec_;
+
+      sec_ += static_cast<unsigned long> (b.sec_ + tmp / 1000000000ULL);
+      nsec_ = static_cast<unsigned long> (tmp % 1000000000ULL);
+
+      return *this;
+    }
+
+    time
+    operator-= (time const& b)
+    {
+      if (*this < b)
+        throw underflow ();
+
+      sec_ -= b.sec_;
+
+      if (nsec_ < b.nsec_)
+      {
+        --sec_;
+        nsec_ += 1000000000ULL - b.nsec_;
+      }
+      else
+        nsec_ -= b.nsec_;
+
+      return *this;
+    }
+
+    friend time
+    operator+ (time const& a, time const& b)
+    {
+      time r (a);
+      r += b;
+      return r;
+    }
+
+    friend time
+    operator- (time const& a, time const& b)
+    {
+      time r (a);
+      r -= b;
+      return r;
+    }
+
+    friend bool
+    operator < (time const& a, time const& b)
+    {
+      return (a.sec_ < b.sec_) || (a.sec_ == b.sec_ && a.nsec_ < b.nsec_);
+    }
+
+  private:
+    unsigned long sec_;
+    unsigned long nsec_;
+  };
+
+  std::ostream&
+  operator<< (std::ostream&, time const&);
+}
+
+#endif // TIME_HXX
-- 
cgit v1.1