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was that declaring the type of MPI_WTICK and MPI_TIME in mpif-common.h would allow the F90 bindings to call through to the back end f77 function and have the right return type. But upon reflection, that's silly -- we were just declaring the variables MPI_WTICK and MPI_WTIME that were of type double precision. Duh. So add some fixed (non-generated) wrapper F90 functions to call the back-end *C* MPI_WTICK and MPI_TIME functions (vs. the back end *F77* functions). We have to call the back-end C functions because there's a name conflict if we try to call the back-end F77 functions -- for the same reasons that we can't "implicitly" define MPI_WTIME and MPI_WTICK in the f90 module, we can't call such an implicitly-defined function. So we had to add new back-end C functions that are directly callable from Fortran, the easiest implementation of which was to provide 4 one-line functions for each (rather than muck around with weak symbols). This commit was SVN r10448.
80 строки
3.2 KiB
Fortran
80 строки
3.2 KiB
Fortran
! -*- fortran -*-
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!
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! Copyright (c) 2004-2006 The Trustees of Indiana University and Indiana
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! University Research and Technology
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! Corporation. All rights reserved.
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! Copyright (c) 2004-2005 The University of Tennessee and The University
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! of Tennessee Research Foundation. All rights
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! reserved.
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! Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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! University of Stuttgart. All rights reserved.
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! Copyright (c) 2004-2005 The Regents of the University of California.
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! All rights reserved.
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! Copyright (c) 2006 Cisco Systems, Inc. All rights reserved.
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! $COPYRIGHT$
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!
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! Additional copyrights may follow
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!
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! $HEADER$
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!
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!
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! Do ***not*** copy this file to the directory where your Fortran
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! fortran application is compiled unless it is absolutely necessary! Most
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! modern Fortran compilers now support the -I command line flag, which
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! tells the compiler where to find .h files (specifically, this one). For
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! example:
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!
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! shell$ mpif77 foo.f -o foo -I$OMPI_HOME/include
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!
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! will probably do the trick (assuming that you have set OMPI_HOME
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! properly).
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!
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! That being said, OMPI's "mpif77" wrapper compiler should
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! automatically include the -I option for you. The following command
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! should be equivalent to the command listed above:
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!
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! shell$ mpif77 foo.f -o foo
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!
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! You should not copy this file to your local directory because it is
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! possible that this file will be changed between versions of Open MPI.
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! Indeed, this mpif.h is incompatible with the mpif.f of other
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! implementations of MPI. Using this mpif.h with other implementations
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! of MPI, or with other versions of Open MPI will result in undefined
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! behavior (to include incorrect results, segmentation faults,
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! unexplainable "hanging" in your application, etc.). Always use the
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! -I command line option instead (or let mpif77 do it for you).
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!
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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! WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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!
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! Include the back-end file that has the bulk of the MPI Fortran
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! interface.
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!
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include 'mpif-common.h'
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!
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! These "external" statements are specific to the MPI F77 interface
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! (and are toxic to the MPI F90 interface), and are therefore in the
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! MPI F77-specific header file (i.e., this one).
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!
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external MPI_NULL_COPY_FN, MPI_NULL_DELETE_FN
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external MPI_COMM_NULL_COPY_FN, MPI_COMM_NULL_DELETE_FN
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external MPI_TYPE_NULL_COPY_FN, MPI_TYPE_NULL_DELETE_FN
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external MPI_DUP_FN, MPI_COMM_DUP_FN, MPI_TYPE_DUP_FN
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external MPI_WIN_NULL_COPY_FN
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external MPI_WIN_NULL_DELETE_FN
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external MPI_WIN_DUP_FN
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!
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! double precision functions
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!
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external MPI_WTIME, MPI_WTICK, PMPI_WTICK, PMPI_WTIME
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double precision MPI_WTIME, MPI_WTICK, PMPI_WTICK, PMPI_WTIME
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