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MPI_Request_get_status(3OpenMPI)                                            MPI_Request_get_status(3OpenMPI)



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_FREE(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  deallo-cate deallocate
       cate 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.




Open MPI 1.2                                   September 2006               MPI_Request_get_status(3OpenMPI)