int MPI_Unpublish_name(
  char *service_name,
  MPI_Info info,
  char *port_name
);

int MPI_Unpublish_name(
  wchar_t *service_name,
  MPI_Info info,
  wchar_t *port_name
);

Parameters

service_name

[in] a service name (string)

info

[in] implementation-specific information (handle)

port_name

[in] a port name (string)

Remarks

This routine unpublishes a service name that has been previously published. Attempting to unpublish a name that has not been published or has already been unpublished is erroneous and is indicated by the error class MPI_ERR_SERVICE.

All published names must be unpublished before the corresponding port is closed and before the publishing process exits. The behavior of MPI_UNPUBLISH_NAME is implementation dependent when a process tries to unpublish a name that it did not publish.

If the info argument was used with MPI_PUBLISH_NAME to tell the implementation how to publish names, the implementation may require that info passed to MPI_UNPUBLISH_NAME contain information to tell the implementation how to unpublish a name.

Thread and Interrupt Safety

This routine is thread and interrupt safe only if no MPI routine that updates or frees the same MPI object may be called concurrently with this routine.

The MPI standard defined a thread-safe interface but this does not mean that all routines may be called without any thread locks. For example, two threads must not attempt to change the contents of the same MPI_Info object concurrently. The user is responsible in this case for using some mechanism, such as thread locks, to ensure that only one thread at a time makes use of this routine.

Notes for Fortran

All MPI objects (e.g., MPI_Datatype, MPI_Comm) are of type INTEGER in Fortran.

Errors

All MPI routines (except MPI_Wtime and MPI_Wtick) return an error value; C routines as the value of the function and Fortran routines in the last argument. Before the value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job. The error handler may be changed with MPI_Comm_set_errhandler (for communicators), MPI_File_set_errhandler (for files), and MPI_Win_set_errhandler (for RMA windows). The MPI-1 routine MPI_Errhandler_set may be used but its use is deprecated. The predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarentee that an MPI program can continue past an error; however, MPI implementations will attempt to continue whenever possible.

MPI_SUCCESS

No error; MPI routine completed successfully.

MPI_ERR_INFO

Invalid Info

MPI_ERR_ARG

Invalid argument. Some argument is invalid and is not identified by a specific error class (e.g., MPI_ERR_RANK).

MPI_ERR_OTHER

Other error; use MPI_Error_string to get more information about this error code.

Example Code

The following sample code illustrates MPI_Unpublish_name.