NAME

       MPI_Request_get_status  - Access information associated with a request without freeing the
       request.

SYNTAX

C Syntax

       #include <mpi.h>
       int MPI_Request_get_status(MPI_Request request, int *flag, MPI_Status *status)

Fortran Syntax

       INCLUDE 'mpif.h'
       MPI_REQUEST_GET_STATUS(REQUEST, FLAG, STATUS, IERROR)
            INTEGER   REQUEST, STATUS(MPI_STATUS_SIZE), IERROR
            LOGICAL   FLAG

C++ Syntax

       #include <mpi.h>
       bool MPI::Request::Get_status(MPI::Status& status) const

       bool MPI::Request::Get_status() const

INPUT PARAMETER

       request
                       Communication request (handle).

OUTPUT PARAMETERS

       flag      Boolean flag, same as from MPI_Test (logical).

       status    MPI_Status object if flag is true (status).

DESCRIPTION

       MPI_Request_get_status sets flag=true if the operation is complete or sets  flag=false  if
       it is not complete. If the operation is complete, it returns in status the request status.
       It does not deallocate or inactivate the request; a subsequent call to test, wait, or free
       should be executed with that request.

       If  your  application does not need to examine the status field, you can save resources by
       using the predefined  constant  MPI_STATUS_IGNORE  as  a  special  value  for  the  status
       argument.

ERRORS

       Almost all MPI routines return an error value; C routines as the value of the function and
       Fortran routines in the last argument. C++ functions do not return errors. If the  default
       error  handler  is  set  to  MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception
       mechanism will be used to throw an MPI::Exception object.

       Before the error value is returned, the current MPI error handler is called.  By  default,
       this  error  handler aborts the MPI job, except for I/O function errors. The error handler
       may   be   changed   with   MPI_Comm_set_errhandler;   the   predefined   error    handler
       MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not
       guarantee that an MPI program can continue past an error.