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       1             : //# PTransport.h: Base class for parallel data transport models
       2             : //# Copyright (C) 1998,1999,2000
       3             : //# Associated Universities, Inc. Washington DC, USA.
       4             : //#
       5             : //# This library is free software; you can redistribute it and/or modify it
       6             : //# under the terms of the GNU Library General Public License as published by
       7             : //# the Free Software Foundation; either version 2 of the License, or (at your
       8             : //# option) any later version.
       9             : //#
      10             : //# This library is distributed in the hope that it will be useful, but WITHOUT
      11             : //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      12             : //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
      13             : //# License for more details.
      14             : //#
      15             : //# You should have received a copy of the GNU Library General Public License
      16             : //# along with this library; if not, write to the Free Software Foundation,
      17             : //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
      18             : //#
      19             : //# Correspondence concerning AIPS++ should be addressed as follows:
      20             : //#        Internet email: aips2-request@nrao.edu.
      21             : //#        Postal address: AIPS++ Project Office
      22             : //#                        National Radio Astronomy Observatory
      23             : //#                        520 Edgemont Road
      24             : //#                        Charlottesville, VA 22903-2475 USA
      25             : //#
      26             : //#
      27             : //# $Id$
      28             : 
      29             : #ifndef SYNTHESIS_PTRANSPORT_H
      30             : #define SYNTHESIS_PTRANSPORT_H
      31             : 
      32             : //# Includes
      33             : #include <casacore/casa/aips.h>
      34             : #include <casacore/casa/Arrays/Array.h>
      35             : #include <casacore/casa/BasicSL/Complex.h>
      36             : #include <casacore/casa/BasicSL/String.h>
      37             : #include <casacore/casa/Containers/Block.h>
      38             : 
      39             : namespace casacore{
      40             : 
      41             : class Record;
      42             : 
      43             : }
      44             : 
      45             : namespace casa { //# NAMESPACE CASA - BEGIN
      46             : 
      47             : // <summary>
      48             : // Interface / Base class for parallel data transport models
      49             : // </summary>
      50             : 
      51             : // <use visibility=local>   or   <use visibility=export>
      52             : 
      53             : // <reviewed reviewer="" date="yyyy/mm/dd" tests="" demos="">
      54             : // </reviewed>
      55             : 
      56             : // <prerequisite>
      57             : //   <li> SomeClass
      58             : //   <li> SomeOtherClass
      59             : //   <li> some concept
      60             : // </prerequisite>
      61             : //
      62             : // <etymology>
      63             : // </etymology>
      64             : //
      65             : // <synopsis>
      66             : // </synopsis>
      67             : //
      68             : // <example>
      69             : // </example>
      70             : //
      71             : // <motivation>
      72             : // </motivation>
      73             : //
      74             : //
      75             : //# <todo asof="yyyy/mm/dd">
      76             : //#   <li> add this feature
      77             : //#   <li> fix this bug
      78             : //#   <li> start discussion of this possible extension
      79             : //# </todo>
      80             : 
      81             : 
      82             : class PTransport {
      83             :  public:
      84             :   // Default constructor and destructor
      85           0 :   PTransport() : numprocs(0), myCpu(0), aWorker(0), aTag(0) {};
      86           0 :   virtual ~PTransport() {}
      87             : 
      88             :   // Return the number of processes
      89           0 :   casacore::Int numThreads() {return numprocs;};
      90             : 
      91             :   // Return the current process rank
      92           0 :   casacore::Int cpu() {return myCpu;}
      93             : 
      94             :   // Set the properties of the current connection including
      95             :   // source/destination and message tag.
      96           0 :   casacore::Int connect(casacore::Int i) {aWorker=i; return i;}
      97           0 :   void connectAnySource() {aWorker=anySource(); return;};
      98           0 :   void connectToController() {aWorker=controllerRank(); return;};
      99           0 :   void setTag(casacore::Int tag) {aTag=tag; return;};
     100           0 :   void setAnyTag() {aTag=anyTag(); return;};
     101             :   
     102             :   // Status functions for worker/controller designation
     103           0 :   casacore::Bool isController() {return (cpu()==controllerRank());};
     104           0 :   casacore::Bool isWorker() {return (cpu()!=controllerRank());};
     105             :   
     106             :   // Default source and message tag values
     107             :   virtual casacore::Int anyTag() = 0;
     108             :   virtual casacore::Int anySource() = 0;
     109             :   
     110             :   // Define the rank of the controller process
     111             :   virtual casacore::Int controllerRank() = 0;
     112             :   
     113             :   // Get and put functions on the parallel data transport layer
     114             :   virtual casacore::Int put(const casacore::Array<casacore::Float> &) = 0;
     115             :   virtual casacore::Int put(const casacore::Array<casacore::Double> &) = 0;
     116             :   virtual casacore::Int put(const casacore::Array<casacore::Complex> &) = 0;
     117             :   virtual casacore::Int put(const casacore::Array<casacore::DComplex> &) = 0;
     118             :   virtual casacore::Int put(const casacore::Array<casacore::Int> &) = 0;
     119             :   virtual casacore::Int put(const casacore::Float &) = 0;
     120             :   virtual casacore::Int put(const casacore::Double &) = 0;
     121             :   virtual casacore::Int put(const casacore::Complex &) = 0;
     122             :   virtual casacore::Int put(const casacore::DComplex &) = 0;
     123             :   virtual casacore::Int put(const casacore::Int &) = 0;
     124             :   virtual casacore::Int put(const casacore::String &) = 0;
     125             :   virtual casacore::Int put(const casacore::Bool &) = 0;
     126             :   virtual casacore::Int put(const casacore::Record &) = 0;
     127             : 
     128             :   virtual casacore::Int get(casacore::Array<casacore::Float> &) = 0;
     129             :   virtual casacore::Int get(casacore::Array<casacore::Double> &) = 0;
     130             :   virtual casacore::Int get(casacore::Array<casacore::Complex> &) = 0;
     131             :   virtual casacore::Int get(casacore::Array<casacore::DComplex> &) = 0;
     132             :   virtual casacore::Int get(casacore::Array<casacore::Int> &) = 0;
     133             :   virtual casacore::Int get(casacore::Float &) = 0;
     134             :   virtual casacore::Int get(casacore::Double &) = 0;
     135             :   virtual casacore::Int get(casacore::Complex &) = 0;
     136             :   virtual casacore::Int get(casacore::DComplex &) = 0;
     137             :   virtual casacore::Int get(casacore::Int &) = 0;
     138             :   virtual casacore::Int get(casacore::String &) = 0;
     139             :   virtual casacore::Int get(casacore::Bool &) = 0;
     140             :   virtual casacore::Int get(casacore::Record &) = 0;
     141             :   //check if MPI layer has been finalized
     142             :   virtual casacore::Bool isFinalized()=0;
     143             :  protected: 
     144             :   // Number of processes
     145             :   casacore::Int numprocs;
     146             :   
     147             :   // Rank of current process
     148             :   casacore::Int myCpu;
     149             :    
     150             :   // Current source or destination process
     151             :   casacore::Int aWorker;
     152             : 
     153             :   // Current message tag
     154             :   casacore::Int aTag;
     155             : 
     156             :   bool debug_p = false;
     157             : };
     158             : 
     159             : } //# NAMESPACE CASA - END
     160             : 
     161             : #endif
     162             : 
     163             :