first commit for parallelIO

runtime/parallelIO/bonsaiIO.h

@@ -0,0 +1,64 @@
+class BonsaiIO
+{
+  typedef unsigned long long ID_t;
+  BonsaiIO() {}
+  ~BonsaiIO() {} 
+
+  bool openFile(const std::string &fileName, const char mode, std::vector<ID_t> &IDList)
+  { 
+    assert(!isFileOpened());
+    /* opens a file with "filename" and a mode "r" for read and "w" for write */
+    /* if mode is "r", the indexList is populated with particle IDs from the file
+     * if mode is "w", the indexList must contain unique & immutable particle IDs */
+    if (mode == 'r')
+      setFileIsOpenedForRead();
+    else if (mode == 'w')
+      setFileIsOpenedForWrite();
+    else
+      assert(0);
+    return isFileOpened(); /* if successfull */
+  }
+
+  template<typename T>
+    bool writeAttribute(const std::string &attributeName, const std::vector<T> &attributeData)
+    {
+      assert(isFileOpenedForWrite());
+      assert(attrbiteData.size() == IDList.size());
+      /* adds particle attribute, e.g.
+       * writeAttribute("position", positions);
+       * writeAttribute("mass", masses);
+       */
+      return true; /* if successful */
+    }
+
+  bool closeFile()
+  {
+    assert(isFileOpened());
+    /* write file */
+    return true; /* if successfull */
+  }
+
+  bool getAttributeList(std::vector<std::string> &attributeNameList)
+  {
+    assert(isFileOpenedForRead());
+    /* reads attribute list from the file */
+    return true;
+  }
+
+  template<typename T>
+    bool readAttribute(const std::string &attributeName, std::vector<T> &attributeData)
+    {
+      assert(isFileOpenedForRead());
+      /* returns attrbites for all particles from the list */
+      return true;
+    }
+
+  template<typename T>
+    bool readAttribute(const std::string &attributeName, std::vector<T> &attributeData, std::vector<ID_t> &IDList)
+    {
+      assert(isFileOpenedForRead());
+      /* returns attrbite for particles with desired IDs */
+      return true;
+    }
+
+};