add globalConstants

conf/global.constant

+loadCount:1000000
+other:1

debug/test_constants.cc

+#include "util/constants.hh"
+
+int main(){
+    initGlobalConstants();
+    return 0;
+}

util/constants.cc

 #include "util/constants.hh"
+#include <string>
+#include <fstream>
+
+
 const char *cryptdb_dir = getenv("CRYPTDB_DIR");
+
 //assert(cryptdb_dir!=NULL);
+const globalConstants constGlobalConstants = initGlobalConstants();
+globalConstants initGlobalConstants(){
+    printf("%s",cryptdb_dir);
+    assert(cryptdb_dir != NULL);
+    assert(cryptdb_dir[0]=='/');
+    std::string prefix = std::string(cryptdb_dir);
+    std::string filename = prefix+"/conf/"+std::string("global.constant");
+    
+    std::ifstream infile(filename);
+
+    globalConstants res;
+    std::string line;
+    while(std::getline(infile,line)){
+        int index = line.find(":");
+        std::string head = line.substr(0,index);
+        if(head=="loadCount"){
+            res.loadCount=stoi(line.substr(index+1));          
+        }else if(head=="other"){
+            ;
+        }else{
+            assert(0);
+        }
+    }
+    infile.close(); 
+    return res;
+}
 

util/constants.hh

@@ -9,3 +9,12 @@ added by et. all et related things.
 #include <stdio.h>
 
 extern const char* cryptdb_dir;
+extern const int gtoken;
+
+struct globalConstants{
+    int loadCount;/*used to limit the number of final_load*/
+};
+
+extern const globalConstants constGlobalConstants;
+
+globalConstants initGlobalConstants();