From: mconsoni_at_[hidden]
Date: 2007-06-12 17:01:13
Author: mconsoni
Date: 2007-06-12 17:01:13 EDT (Tue, 12 Jun 2007)
New Revision: 7016
URL: http://svn.boost.org/trac/boost/changeset/7016
Log:
- New benchmarks directory.
- Added the first benchmark, comparing the plain old dlopen approach with extensions. The difference appears to be 3x favoring plain-old approach. Now it only works on Linux.
Added:
sandbox/libs/extension/benchmarks/
sandbox/libs/extension/benchmarks/Jamfile.v2
sandbox/libs/extension/benchmarks/hello_world_plain_old.cpp
sandbox/libs/extension/benchmarks/plain_old_approach.cpp
Added: sandbox/libs/extension/benchmarks/Jamfile.v2
==============================================================================
--- (empty file)
+++ sandbox/libs/extension/benchmarks/Jamfile.v2 2007-06-12 17:01:13 EDT (Tue, 12 Jun 2007)
@@ -0,0 +1,26 @@
+import type : change-generated-target-suffix ;
+import type : change-generated-target-prefix ;
+type.change-generated-target-suffix SHARED_LIB : : extension ;
+type.change-generated-target-prefix SHARED_LIB : : lib ;
+import os ;
+
+local BOOST_ROOT = [ os.environ BOOST_ROOT ] ;
+project
+ : requirements
+ <include>../../../
+ <include>$(BOOST_ROOT)
+ <toolset>gcc:<find-static-library>dl
+ :
+ ;
+
+exe PlainOldApproach : plain_old_approach.cpp ;
+lib PlainOldHelloWorldLib : hello_world_plain_old.cpp : <link>shared ;
+
+install ../bin :
+ PlainOldApproach PlainOldHelloWorldLib
+ :
+ # <install-dependencies>on
+ # <install-type>EXE
+ # <install-type>SHARED_LIB
+ # <install-type>LIB
+ ;
Added: sandbox/libs/extension/benchmarks/hello_world_plain_old.cpp
==============================================================================
--- (empty file)
+++ sandbox/libs/extension/benchmarks/hello_world_plain_old.cpp 2007-06-12 17:01:13 EDT (Tue, 12 Jun 2007)
@@ -0,0 +1,31 @@
+/* (C) Copyright Mariano G. Consoni 2007
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#include "../examples/word.hpp"
+
+#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
+# define EXPORT_DECL __declspec(dllexport)
+#else
+# define EXPORT_DECL
+#endif
+
+
+class world : public word
+{
+public:
+ virtual const char * get_val(){return "world!";}
+};
+class hello : public word
+{
+public:
+ virtual const char * get_val(){return "hello";}
+};
+
+extern "C" void EXPORT_DECL extension_export_words(word **h, word **w)
+{
+ *h = new hello;
+ *w = new world;
+}
Added: sandbox/libs/extension/benchmarks/plain_old_approach.cpp
==============================================================================
--- (empty file)
+++ sandbox/libs/extension/benchmarks/plain_old_approach.cpp 2007-06-12 17:01:13 EDT (Tue, 12 Jun 2007)
@@ -0,0 +1,85 @@
+/* (C) Copyright Mariano G. Consoni 2007
+ * Distributed under the Boost Software License, Version 1.0. (See
+ * accompanying file LICENSE_1_0.txt or copy at
+ * http://www.boost.org/LICENSE_1_0.txt)
+ */
+
+#include <boost/extension/factory_map.hpp>
+#include <boost/extension/shared_library.hpp>
+#include <boost/extension/convenience.hpp>
+#include <boost/timer.hpp>
+
+#include <iostream>
+#include <dlfcn.h>
+
+#include "../examples/word.hpp"
+
+
+int main(void)
+{
+ using namespace boost::extensions;
+
+ const unsigned int times = 100000;
+
+ // boost.extensions style
+ boost::timer extensions_style;
+ for(unsigned int c = 0; c < times; ++c) {
+
+ shared_library l((std::string("libHelloWorldLib") + ".extension").c_str());
+ l.open();
+ {
+ factory_map fm;
+ functor<void, factory_map &> load_func = l.get_functor<void, factory_map &>("extension_export_word");
+ load_func(fm);
+
+ std::list<factory<word, int> > & factory_list = fm.get<word, int>();
+ for (std::list<factory<word, int> >::iterator current_word = factory_list.begin();
+ current_word != factory_list.end(); ++current_word)
+ {
+ std::auto_ptr<word> word_ptr(current_word->create());
+
+ // do something with the word
+ std::string s(word_ptr->get_val());
+ s += "\n";
+ }
+ }
+ l.close();
+ }
+ std::cout << "Boost.extensions style: " << extensions_style.elapsed() << std::endl;
+
+
+ // plain old style
+ boost::timer old_style;
+ for(unsigned int c = 0; c < times; ++c) {
+ void *library = dlopen("libPlainOldHelloWorldLib.extension", RTLD_LAZY);
+ if(library == 0) {
+ std::cerr << "Cannot open Hello World Library." << std::endl;
+ return 1;
+ }
+ void (*export_words)(word **, word **);
+ *(void **) (&export_words) = dlsym(library, "extension_export_words");
+ if(export_words == 0) {
+ std::cerr << "Cannot get exported symbol." << std::endl;
+ return 1;
+ }
+
+ // retrieve the words
+ word *first_word, *second_word;
+ (*export_words)(&first_word, &second_word);
+
+ // do something with the word
+ std::string f(first_word->get_val());
+ f += "\n";
+
+ std::string s(second_word->get_val());
+ s += "\n";
+
+ delete first_word;
+ delete second_word;
+
+ dlclose(library);
+ }
+ std::cout << "Plain old style: " << old_style.elapsed() << std::endl;
+
+ return 0;
+}