added micro-benchmark

pvDataApp/mb/mb_stat.cpp

@@ -0,0 +1,50 @@
+#include <iostream>
+#include <fstream>
+#include "mb.h"
+#include <cstring>
+
+MB_DECLARE(e, 64000);
+
+// TODO command line options
+int main(int argc, char** argv)
+{
+    // norm hack
+    bool normalizeOnly = false;
+    if (argc == 3 && strcmp(argv[2],"-n")==0)
+    {
+        argc = 2;
+        normalizeOnly = true;
+    }
+
+    
+    if (argc != 2)
+    {
+        std::cerr << "usage: " << argv[0] << " <mb CSV file>" << std::endl;
+        return -1;
+    }
+    
+    char * fileName = argv[1];
+    
+    std::ifstream in(fileName);
+    if (in.is_open())
+    {
+        MB_CSV_IMPORT(e, in);
+        in.close();
+
+        if (normalizeOnly)
+        {
+            MB_NORMALIZE(e);
+            MB_PRINT(e, std::cout);
+        }
+        else
+            MB_STATS(e, std::cout);
+    }
+    else
+    {
+        std::cerr << "failed to open a file " << fileName << ", skipping..." << std::endl;
+        return -1;
+    }
+    
+    return 0;
+}
+