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  24 class Datatype {
  25 #if 0 
  26   
  27 #endif
  28 public:
  29 
  30 #if 0 
  31 
  32   
  33   inline Datatype() { }
  34 
  35   
  36   inline Datatype(MPI_Datatype i) : pmpi_datatype(i) { }
  37 
  38   
  39   inline Datatype(const Datatype& dt) : pmpi_datatype(dt.pmpi_datatype) { }
  40 
  41   inline Datatype(const PMPI::Datatype& dt) : pmpi_datatype(dt) { }
  42 
  43   inline virtual ~Datatype() {}
  44 
  45   inline Datatype& operator=(const Datatype& dt) {
  46     pmpi_datatype = dt.pmpi_datatype; return *this; }
  47 
  48   
  49   inline bool operator== (const Datatype &a) const
  50     { return (bool) (pmpi_datatype == a.pmpi_datatype); }
  51 
  52   inline bool operator!= (const Datatype &a) const
  53     { return (bool) !(*this == a); }
  54 
  55   
  56   inline Datatype& operator= (const MPI_Datatype &i)
  57     { pmpi_datatype = i; return *this; }
  58 
  59   inline operator MPI_Datatype() const { return (MPI_Datatype)pmpi_datatype; }
  60   
  61 
  62   inline operator const PMPI::Datatype&() const { return pmpi_datatype; }
  63 
  64   inline const PMPI::Datatype& pmpi() const { return pmpi_datatype; }
  65 
  66 #else
  67 
  68   
  69   inline Datatype() : mpi_datatype(MPI_DATATYPE_NULL) { }
  70   inline virtual ~Datatype() {}
  71   
  72   inline Datatype(MPI_Datatype i) : mpi_datatype(i) { }
  73 
  74   
  75   inline Datatype(const Datatype& dt) : mpi_datatype(dt.mpi_datatype) { }
  76   inline Datatype& operator=(const Datatype& dt) {
  77     mpi_datatype = dt.mpi_datatype; return *this; }
  78 
  79   
  80   inline bool operator== (const Datatype &a) const
  81     { return (bool) (mpi_datatype == a.mpi_datatype); }
  82 
  83   inline bool operator!= (const Datatype &a) const
  84     { return (bool) !(*this == a); }
  85 
  86   
  87   inline Datatype& operator= (const MPI_Datatype &i)
  88     { mpi_datatype = i; return *this; }
  89 
  90   inline operator MPI_Datatype () const { return mpi_datatype; }
  91   
  92 
  93 #endif
  94 
  95   
  96   
  97   
  98   typedef int Copy_attr_function(const Datatype& oldtype,
  99                                                 int type_keyval,
 100                                                 void* extra_state,
 101                                                 const void* attribute_val_in,
 102                                                 void* attribute_val_out,
 103                                                 bool& flag);
 104 
 105   typedef int Delete_attr_function(Datatype& type, int type_keyval,
 106                                    void* attribute_val, void* extra_state);
 107 
 108   
 109   
 110   
 111 
 112   virtual Datatype Create_contiguous(int count) const;
 113 
 114   virtual Datatype Create_vector(int count, int blocklength,
 115                                  int stride) const;
 116 
 117   virtual Datatype Create_indexed(int count,
 118                                   const int array_of_blocklengths[],
 119                                   const int array_of_displacements[]) const;
 120 
 121   static Datatype Create_struct(int count, const int array_of_blocklengths[],
 122                                 const Aint array_of_displacements[],
 123                                 const Datatype array_if_types[]);
 124 
 125   virtual Datatype Create_hindexed(int count, const int array_of_blocklengths[],
 126                                    const Aint array_of_displacements[]) const;
 127 
 128   virtual Datatype Create_hvector(int count, int blocklength, Aint stride) const;
 129 
 130   virtual Datatype Create_indexed_block(int count, int blocklength,
 131                                         const int array_of_blocklengths[]) const;
 132   virtual Datatype Create_resized(const Aint lb, const Aint extent) const;
 133 
 134   virtual int Get_size() const;
 135 
 136   virtual void Get_extent(Aint& lb, Aint& extent) const;
 137 
 138   virtual void Get_true_extent(Aint&, Aint&) const;
 139 
 140   virtual void Commit();
 141 
 142   virtual void Free();
 143 
 144   virtual void Pack(const void* inbuf, int incount, void *outbuf,
 145                     int outsize, int& position, const Comm &comm) const;
 146 
 147   virtual void Unpack(const void* inbuf, int insize, void *outbuf, int outcount,
 148                       int& position, const Comm& comm) const;
 149 
 150   virtual int Pack_size(int incount, const Comm& comm) const;
 151 
 152   virtual void Pack_external(const char* datarep, const void* inbuf, int incount,
 153               void* outbuf, Aint outsize, Aint& position) const;
 154 
 155   virtual Aint Pack_external_size(const char* datarep, int incount) const;
 156 
 157   virtual void Unpack_external(const char* datarep, const void* inbuf,
 158               Aint insize, Aint& position, void* outbuf, int outcount) const;
 159 
 160   
 161   
 162   
 163   virtual Datatype Create_subarray(int ndims, const int array_of_sizes[],
 164                                    const int array_of_subsizes[],
 165                                    const int array_of_starts[], int order)
 166     const;
 167 
 168   virtual Datatype Create_darray(int size, int rank, int ndims,
 169                    const int array_of_gsizes[], const int array_of_distribs[],
 170                    const int array_of_dargs[],  const int array_of_psizes[],
 171                    int order) const;
 172 
 173   
 174   static Datatype Create_f90_complex(int p, int r);
 175 
 176   static Datatype Create_f90_integer(int r);
 177 
 178   static Datatype Create_f90_real(int p, int r);
 179 
 180   static Datatype Match_size(int typeclass, int size);
 181 
 182   
 183   
 184   
 185 
 186   virtual Datatype Dup() const;
 187 
 188   
 189   
 190   
 191   static int Create_keyval(Copy_attr_function* type_copy_attr_fn,
 192                            Delete_attr_function* type_delete_attr_fn,
 193                            void* extra_state);
 194   static int Create_keyval(MPI_Type_copy_attr_function* type_copy_attr_fn,
 195                            MPI_Type_delete_attr_function* type_delete_attr_fn,
 196                            void* extra_state);
 197   static int Create_keyval(Copy_attr_function* type_copy_attr_fn,
 198                            MPI_Type_delete_attr_function* type_delete_attr_fn,
 199                            void* extra_state);
 200   static int Create_keyval(MPI_Type_copy_attr_function* type_copy_attr_fn,
 201                            Delete_attr_function* type_delete_attr_fn,
 202                            void* extra_state);
 203 
 204 protected:
 205   
 206   
 207   static int do_create_keyval(MPI_Type_copy_attr_function* c_copy_fn,
 208                               MPI_Type_delete_attr_function* c_delete_fn,
 209                               Copy_attr_function* cxx_copy_fn,
 210                               Delete_attr_function* cxx_delete_fn,
 211                               void* extra_state, int &keyval);
 212 
 213 public:
 214 
 215   virtual void Delete_attr(int type_keyval);
 216 
 217   static void Free_keyval(int& type_keyval);
 218 
 219   virtual bool Get_attr(int type_keyval, void* attribute_val) const;
 220 
 221   virtual void Get_contents(int max_integers, int max_addresses,
 222                             int max_datatypes, int array_of_integers[],
 223                             Aint array_of_addresses[],
 224                             Datatype array_of_datatypes[]) const;
 225 
 226   virtual void Get_envelope(int& num_integers, int& num_addresses,
 227                             int& num_datatypes, int& combiner) const;
 228 
 229   virtual void Get_name(char* type_name, int& resultlen) const;
 230 
 231   virtual void Set_attr(int type_keyval, const void* attribute_val);
 232 
 233   virtual void Set_name(const char* type_name);
 234 
 235 
 236 
 237 #if 0 
 238 private:
 239   PMPI::Datatype pmpi_datatype;
 240 #else
 241 protected:
 242   MPI_Datatype mpi_datatype;
 243 #endif
 244 
 245 public:
 246     
 247     
 248     struct keyval_intercept_data_t {
 249         MPI_Type_copy_attr_function *c_copy_fn;
 250         MPI_Type_delete_attr_function *c_delete_fn;
 251         Copy_attr_function* cxx_copy_fn;
 252         Delete_attr_function* cxx_delete_fn;
 253         void *extra_state;
 254     };
 255 
 256     
 257     static opal_mutex_t cxx_extra_states_lock;
 258 };