osx man page for mpi_grequest_complete

MPI_Grequest_complete(3OpenMPI) 										   MPI_Grequest_complete(3OpenMPI)

NAME
       MPI_Grequest_complete  - Reports that a generalized request is complete.

SYNTAX
C Syntax
       #include <mpi.h>
       int MPI_Grequest_complete(MPI_Request request)

Fortran Syntax
       INCLUDE 'mpif.h'
       MPI_GREQUEST_COMPLETE(REQUEST, IERROR)
	    INTEGER   REQUEST, IERROR

C++ Syntax
       #include <mpi.h>
       void MPI::Grequest::Complete()

INPUT
/OUTPUT PARAMETER
       request	 Generalized request (handle).

OUTPUT PARAMETER
       IERROR	 Fortran only: Error status (integer).

DESCRIPTION
       MPI_Grequest_complete  informs  MPI  that  the  operations  represented	by  the  generalized  request  request	are  complete.	A  call to
       MPI_Wait(request, status) will return, and a call to MPI_Test(request, flag, status) will return flag=true only after a	call  to  MPI_Gre-
       quest_complete has declared that these operations are complete.

       MPI  imposes  no restrictions on the code executed by the callback functions. However, new nonblocking operations should be defined so that
       the general semantic rules about MPI calls such as MPI_Test, MPI_Request_free, or MPI_Cancel still hold. For example, all these	calls  are
       supposed to be local and nonblocking. Therefore, the callback functions query_fn, free_fn, or cancel_fn should invoke blocking MPI communi-
       cation calls only if the context is such that these calls are guaranteed to return in finite time. Once MPI_Cancel has  been  invoked,  the
       canceled  operation  should  complete in finite time, regardless of the state of other processes (the operation has acquired "local" seman-
       tics). It should either succeed or fail without side-effects. The user should guarantee these same properties for newly defined operations.

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++ func-
       tions  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_Grequest_complete(3OpenMPI)