MPI_T_finalize - Finalize the MPI tool information interface
This routine may be called as often as the corresponding MPI_T_init_thread()
routine up to the current point of execution. Calling it more times returns a
corresponding error code. As long as the number of calls to MPI_T_finalize()
is smaller than the number of calls to MPI_T_init_thread() up to the current
point of execution, the MPI tool information interface remains initialized and
calls to its routines are permissible. Further, additional calls to
MPI_T_init_thread() after one or more calls to MPI_T_finalize() are
permissible. Once MPI_T_finalize() is called the same number of times as the
routine MPI_T_init_thread() up to the current point of execution, the MPI tool
information interface is no longer initialized. The interface can be
reinitialized by subsequent calls to MPI_T_init_thread().
At the end of the program execution, unless MPI_Abort() is called, an
application must have called MPI_T_init_thread() and MPI_T_finalize() an equal
number of times.
This routine is thread-safe. This means that this routine may be safely used by
multiple threads without the need for any user-provided thread locks. However,
the routine is not interrupt safe. Typically, this is due to the use of memory
allocation routines such as malloc
or other non-MPICH runtime routines
that are themselves not interrupt-safe.
All MPI routines (except MPI_Wtime
) 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 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
guarentee that an MPI program can continue past an error; however,
MPI implementations will attempt to continue whenever possible.
- - No error; MPI routine completed successfully.
- - The MPI tool information interface is not initialized.