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<TITLE>MPI_T_finalize</TITLE>
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MPI_T_finalize
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Finalize the MPI tool information interface
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Synopsis
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int MPI_T_finalize(void)
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Notes
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This routine may be called as often as the corresponding MPI_T_init_thread() routine
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up to the current point of execution. Calling it more times returns a corresponding
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error code. As long as the number of calls to MPI_T_finalize() is smaller than the
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number of calls to MPI_T_init_thread() up to the current point of execution, the MPI
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tool information interface remains initialized and calls to its routines are permissible.
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Further, additional calls to MPI_T_init_thread() after one or more calls to MPI_T_finalize()
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are permissible. Once MPI_T_finalize() is called the same number of times as the routine
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MPI_T_init_thread() up to the current point of execution, the MPI tool information
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interface is no longer initialized. The interface can be reinitialized by subsequent calls
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to MPI_T_init_thread().
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At the end of the program execution, unless MPI_Abort() is called, an application must
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have called MPI_T_init_thread() and MPI_T_finalize() an equal number of times.
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Thread and Interrupt Safety
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This routine is thread-safe. This means that this routine may be
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safely used by multiple threads without the need for any user-provided
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thread locks. However, the routine is not interrupt safe. Typically,
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this is due to the use of memory allocation routines such as <tt>malloc
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</tt>or other non-MPICH runtime routines that are themselves not interrupt-safe.
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Errors
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All MPI routines (except <tt>MPI_Wtime</tt> and <tt>MPI_Wtick</tt>) return an error value;
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C routines as the value of the function and Fortran routines in the last
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argument. Before the value is returned, the current MPI error handler is
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called. By default, this error handler aborts the MPI job. The error handler
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may be changed with <tt>MPI_Comm_set_errhandler</tt> (for communicators),
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<tt>MPI_File_set_errhandler</tt> (for files), and <tt>MPI_Win_set_errhandler</tt> (for
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RMA windows). The MPI-1 routine <tt>MPI_Errhandler_set</tt> may be used but
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its use is deprecated. The predefined error handler
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<tt>MPI_ERRORS_RETURN</tt> may be used to cause error values to be returned.
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Note that MPI does not guarentee that an MPI program can continue past
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an error; however, MPI implementations will attempt to continue whenever
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possible.
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- MPI_SUCCESS
- No error; MPI routine completed successfully.
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- MPI_T_ERR_NOT_INITIALIZED
- The MPI tool information interface is not initialized.
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<H0>See Also</H0>
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MPI_T_init_thread
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