Fix for ticket #219 MPI::Grequest is missing from C++ API. I did the initial implementation and Jeff fixed it up. Passes a new test in trunk/simple/basic/cxx/grequest.cc.

This commit was SVN r12264.

ompi/mpi/cxx/mpicxx.h

@@ -121,6 +121,7 @@ namespace MPI {
   class Group;
   class Op;
   class Request;
+  class Grequest;
   class Status;
   class Info;
   class Win;

ompi/mpi/cxx/request.h

@@ -191,3 +191,28 @@ private:
   PMPI::Prequest pmpi_request;
 #endif 
 };
+
+class Grequest : public MPI::Request {
+  public:
+    typedef int Query_function(void *, Status&);
+    typedef int Free_function(void *);
+    typedef int Cancel_function(void *, bool);
+
+    Grequest() {}
+    Grequest(const Request& req) : Request(req) {}
+    Grequest(const MPI_Request &req) : Request(req) {}
+    virtual ~Grequest() {}
+
+    Grequest& operator=(const Request& req) {
+	mpi_request = req; return(*this);
+    }
+
+    Grequest& operator=(const Grequest& req) {
+	mpi_request = req.mpi_request; return(*this);
+    }
+
+    static Grequest Start(Query_function *, Free_function *,
+	    Cancel_function *, void *);
+
+    virtual void Complete();
+};

ompi/mpi/cxx/request_inln.h

@@ -330,4 +330,22 @@ inline bool MPI::Request::Get_status() const
     return OPAL_INT_TO_BOOL(flag);
 }
 
+inline MPI::Grequest
+MPI::Grequest::Start(Query_function *query_fn, Free_function *free_fn,
+	Cancel_function *cancel_fn, void *extra)
+{
+    MPI_Request grequest = 0;
+
+    (void) MPI_Grequest_start((MPI_Grequest_query_function *) query_fn,
+	    (MPI_Grequest_free_function *) free_fn,
+	    (MPI_Grequest_cancel_function *) cancel_fn, extra, &grequest);
+
+    return(grequest);
+}
+
+inline void
+MPI::Grequest::Complete()
+{
+    (void) MPI_Grequest_complete(mpi_request);
+}