add getline benchmark - refs mapnik#3101

Author: Dane Springmeyer

benchmark/build.py

@@ -47,6 +47,7 @@
     "test_marker_cache.cpp",
     "test_quad_tree.cpp",
     "test_noop_rendering.cpp",
+    "test_getline.cpp",
 #    "test_numeric_cast_vs_static_cast.cpp",
 ]
 for cpp_test in benchmarks:

benchmark/test_getline.cpp

@@ -0,0 +1,123 @@
+#include "bench_framework.hpp"
+#include <cstring>
+#include <cstdlib>
+#include "../plugins/input/csv/csv_utils.hpp"
+
+class test : public benchmark::test_case
+{
+public:
+    std::string line_data_;
+    test(mapnik::parameters const& params)
+     : test_case(params)
+       {
+          boost::optional<std::string> line_data = params.get<std::string>("line");
+          if (!line_data)
+          {
+              throw std::runtime_error("please provide a --line \"one line\ntwo line\"");
+          }
+          line_data_ = *line_data;
+       }
+
+    bool validate() const
+    {
+        std::string first = line_data_.substr(line_data_.find_first_not_of('\n'));
+        char newline = '\n';
+        std::string csv_line;
+        std::stringstream s;
+        s << line_data_;
+        std::getline(s,csv_line,s.widen(newline));
+        if (csv_line != first)
+        {
+            return true;
+        }
+        else
+        {
+            std::clog << "Error: the parsed line (" << csv_line << ") should be a subset of the original line (" << line_data_ << ") (ensure you pass a line with a \\n)\n";
+        }
+        return true;
+    }
+    bool operator()() const
+    {
+        char newline = '\n';
+        std::string csv_line;
+        std::stringstream s;
+        s << line_data_;
+        for (unsigned i=0;i<iterations_;++i)
+        {
+            std::getline(s,csv_line,s.widen(newline));
+        }
+        return true;
+    }
+};
+
+
+class test2 : public benchmark::test_case
+{
+public:
+    std::string line_data_;
+    test2(mapnik::parameters const& params)
+     : test_case(params)
+       {
+          boost::optional<std::string> line_data = params.get<std::string>("line");
+          if (!line_data)
+          {
+              throw std::runtime_error("please provide a --line \"one line\ntwo line\"");
+          }
+          line_data_ = *line_data;
+       }
+
+    bool validate() const
+    {
+        std::string first = line_data_.substr(line_data_.find_first_not_of('\n'));
+        char newline = '\n';
+        std::string csv_line;
+        std::stringstream s;
+        s << line_data_;
+        csv_utils::getline_csv(s,csv_line,s.widen(newline));
+        if (csv_line != first)
+        {
+            return true;
+        }
+        else
+        {
+            std::clog << "Error: the parsed line (" << csv_line << ") should be a subset of the original line (" << line_data_ << ") (ensure you pass a line with a \\n)\n";
+        }
+        return true;
+    }
+    bool operator()() const
+    {
+        char newline = '\n';
+        std::string csv_line;
+        std::stringstream s;
+        s << line_data_;
+        for (unsigned i=0;i<iterations_;++i)
+        {
+            csv_utils::getline_csv(s,csv_line,s.widen(newline));
+        }
+        return true;
+    }
+};
+
+int main(int argc, char** argv)
+{
+    int return_value = 0;
+    try
+    {
+        mapnik::parameters params;
+        benchmark::handle_args(argc,argv,params);
+        {
+            test test_runner(params);
+            return_value = return_value | run(test_runner,"std::getline");
+        }
+        {
+            test2 test_runner2(params);
+            return_value = return_value | run(test_runner2,"csv_utils::getline_csv");
+        }
+    }
+    catch (std::exception const& ex)
+    {
+        std::clog << ex.what() << "\n";
+        return -1;
+    }
+    return return_value;
+}

plugins/input/csv/csv_utils.hpp

@@ -244,7 +244,7 @@ static inline void locate_geometry_column(std::string const& header, std::size_t
     }
 }
 
-static mapnik::geometry::geometry<double> extract_geometry(std::vector<std::string> const& row, geometry_column_locator const& locator)
+static inline mapnik::geometry::geometry<double> extract_geometry(std::vector<std::string> const& row, geometry_column_locator const& locator)
 {
     mapnik::geometry::geometry<double> geom;
     if (locator.type == geometry_column_locator::WKT)