60485ff95f
OMPI_* to OPAL_*. This allows opal layer to be used more independent from the whole of ompi. NOTE: 9 "svn mv" operations immediately follow this commit. This commit was SVN r21180.
224 строки
9.7 KiB
C
224 строки
9.7 KiB
C
/*
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* Copyright (c) 2004-2005 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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#ifndef OMPI_F77_CONSTANTS_H
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#define OMPI_F77_CONSTANTS_H
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#include "ompi_config.h"
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/*
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* Several variables are used to link against MPI F77 constants which
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* correspond to addresses, e.g. MPI_BOTTOM, and are implemented via
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* common blocks.
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*
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* We use common blocks so that in the C wrapper functions, we can
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* compare the address that comes in against known addresses (e.g., if
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* the "status" argument in MPI_RECV is the address of the common
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* block for the fortran equivalent of MPI_STATUS_IGNORE, then we know
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* to pass the C MPI_STATUS_IGNORE to the C MPI_Recv function). As
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* such, we never look at the *value* of these variables (indeed,
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* they're never actually initialized), but instead only ever look at
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* the *address* of these variables.
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*
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* As such, it is not strictly necessary that the size and type of our
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* C variables matches that of the common Fortran block variables.
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* However, good programming form says that we should match, so we do.
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*
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* Note, however, that the alignments of the Fortran common block and
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* the C variable may not match (e.g., Intel 9.0 compilers on 64 bit
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* platforms will put the alignment of a double on 4 bytes, but put
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* the alignment of all common blocks on 16 bytes). This only matters
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* (to some compilers!), however, if you initialize the C variable in
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* the global scope. If the C global instantiation is not
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* initialized, the compiler/linker seems to "figure it all out" and
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* make the alignments match.
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*
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* Since we made the fundamental decision to support all 4 common
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* fortran compiler symbol conventions within the same library for
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* those compilers who support weak symbols, we need to have 4 symbols
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* for each of the fortran address constants. As described above, we
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* have to have known *pointer* values for the fortran addresses
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* (e.g., MPI_STATUS_IGNORE). So when the fortran wrapper for
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* MPI_RECV gets (MPI_Fint *status), it can check (status ==
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* some_sentinel_value) to know that it got the Fortran equivalent of
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* MPI_STATUS_IGNORE and therefore pass the C MPI_STATUS_IGNORE to the
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* C MPI_Recv.
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*
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* We do this by having a "common" block in mpif.h:
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*
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* INTEGER MPI_STATUS_IGNORE(MPI_STATUS_SIZE)
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* common /mpi_fortran_status_ignore/ MPI_STATUS_IGNORE
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*
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* This makes the fortran variable MPI_STATUS_IGNORE effectively be an
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* alias for the C variable "mpi_fortran_status_ignore" -- but the C
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* symbol name is according to the fortran compiler's naming symbol
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* convention bais. So it could be MPI_FORTRAN_STATUS_IGNORE,
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* mpi_fortran_status_ignore, mpi_fortran_status_ignore_, or
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* mpi_fortran_status_ignore__.
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*
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* Hence, we have to have *4* C symbols for this, and them compare for
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* all of them in the fortran MPI_RECV wrapper. :-( I can't think of
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* any better way to do this.
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*
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* I'm putting these 4 comparisons in macros (on systems where we
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* don't support the 4 symbols -- e.g., OSX, where we don't have weak
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* symbols -- it'll only be one comparison), so if anyone things of
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* something better than this, you should only need to modify this
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* file.
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*/
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#define DECL(type, upper_case, lower_case, single_u, double_u) \
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OMPI_DECLSPEC extern type upper_case; \
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OMPI_DECLSPEC extern type lower_case; \
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OMPI_DECLSPEC extern type single_u; \
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OMPI_DECLSPEC extern type double_u
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/* Note that the rationale for the types of each of these variables is
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discussed in ompi/include/mpif-common.h. Do not change the types
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without also changing ompi/runtime/ompi_mpi_init.c and
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ompi/include/mpif-common.h. */
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DECL(int, MPI_FORTRAN_BOTTOM, mpi_fortran_bottom,
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mpi_fortran_bottom_, mpi_fortran_bottom__);
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DECL(int, MPI_FORTRAN_IN_PLACE, mpi_fortran_in_place,
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mpi_fortran_in_place_, mpi_fortran_in_place__);
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DECL(char *, MPI_FORTRAN_ARGV_NULL, mpi_fortran_argv_null,
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mpi_fortran_argv_null_, mpi_fortran_argv_null__);
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DECL(double, MPI_FORTRAN_ARGVS_NULL, mpi_fortran_argvs_null,
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mpi_fortran_argvs_null_, mpi_fortran_argvs_null__);
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DECL(int *, MPI_FORTRAN_ERRCODES_IGNORE, mpi_fortran_errcodes_ignore,
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mpi_fortran_errcodes_ignore_, mpi_fortran_errcodes_ignore__);
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DECL(int *, MPI_FORTRAN_STATUS_IGNORE, mpi_fortran_status_ignore,
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mpi_fortran_status_ignore_, mpi_fortran_status_ignore__);
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DECL(double, MPI_FORTRAN_STATUSES_IGNORE, mpi_fortran_statuses_ignore,
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mpi_fortran_statuses_ignore_, mpi_fortran_statuses_ignore__);
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/*
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* Create macros to do the checking. Only check for all 4 if we have
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* weak symbols. Otherwise, just check for the one relevant symbol.
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*/
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#if OPAL_HAVE_WEAK_SYMBOLS
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#define OMPI_IS_FORTRAN_BOTTOM(addr) \
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(addr == (void*) &MPI_FORTRAN_BOTTOM || \
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addr == (void*) &mpi_fortran_bottom || \
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addr == (void*) &mpi_fortran_bottom_ || \
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addr == (void*) &mpi_fortran_bottom__)
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#define OMPI_IS_FORTRAN_IN_PLACE(addr) \
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(addr == (void*) &MPI_FORTRAN_IN_PLACE || \
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addr == (void*) &mpi_fortran_in_place || \
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addr == (void*) &mpi_fortran_in_place_ || \
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addr == (void*) &mpi_fortran_in_place__)
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#define OMPI_IS_FORTRAN_ARGV_NULL(addr) \
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(addr == (void*) &MPI_FORTRAN_ARGV_NULL || \
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addr == (void*) &mpi_fortran_argv_null || \
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addr == (void*) &mpi_fortran_argv_null_ || \
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addr == (void*) &mpi_fortran_argv_null__)
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#define OMPI_IS_FORTRAN_ARGVS_NULL(addr) \
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(addr == (void*) &MPI_FORTRAN_ARGVS_NULL || \
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addr == (void*) &mpi_fortran_argvs_null || \
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addr == (void*) &mpi_fortran_argvs_null_ || \
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addr == (void*) &mpi_fortran_argvs_null__)
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#define OMPI_IS_FORTRAN_ERRCODES_IGNORE(addr) \
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(addr == (void*) &MPI_FORTRAN_ERRCODES_IGNORE || \
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addr == (void*) &mpi_fortran_errcodes_ignore || \
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addr == (void*) &mpi_fortran_errcodes_ignore_ || \
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addr == (void*) &mpi_fortran_errcodes_ignore__)
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#define OMPI_IS_FORTRAN_STATUS_IGNORE(addr) \
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(addr == (void*) &MPI_FORTRAN_STATUS_IGNORE || \
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addr == (void*) &mpi_fortran_status_ignore || \
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addr == (void*) &mpi_fortran_status_ignore_ || \
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addr == (void*) &mpi_fortran_status_ignore__)
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#define OMPI_IS_FORTRAN_STATUSES_IGNORE(addr) \
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(addr == (void*) &MPI_FORTRAN_STATUSES_IGNORE || \
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addr == (void*) &mpi_fortran_statuses_ignore || \
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addr == (void*) &mpi_fortran_statuses_ignore_ || \
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addr == (void*) &mpi_fortran_statuses_ignore__)
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#elif OMPI_F77_CAPS
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#define OMPI_IS_FORTRAN_BOTTOM(addr) \
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(addr == (void*) &MPI_FORTRAN_BOTTOM)
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#define OMPI_IS_FORTRAN_IN_PLACE(addr) \
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(addr == (void*) &MPI_FORTRAN_IN_PLACE)
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#define OMPI_IS_FORTRAN_ARGV_NULL(addr) \
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(addr == (void*) &MPI_FORTRAN_ARGV_NULL)
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#define OMPI_IS_FORTRAN_ARGVS_NULL(addr) \
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(addr == (void*) &MPI_FORTRAN_ARGVS_NULL)
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#define OMPI_IS_FORTRAN_ERRCODES_IGNORE(addr) \
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(addr == (void*) &MPI_FORTRAN_ERRCODES_IGNORE)
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#define OMPI_IS_FORTRAN_STATUS_IGNORE(addr) \
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(addr == (void*) &MPI_FORTRAN_STATUS_IGNORE)
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#define OMPI_IS_FORTRAN_STATUSES_IGNORE(addr) \
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(addr == (void*) &MPI_FORTRAN_STATUSES_IGNORE)
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#elif OMPI_F77_PLAIN
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#define OMPI_IS_FORTRAN_BOTTOM(addr) \
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(addr == (void*) &mpi_fortran_bottom)
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#define OMPI_IS_FORTRAN_IN_PLACE(addr) \
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(addr == (void*) &mpi_fortran_in_place)
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#define OMPI_IS_FORTRAN_ARGV_NULL(addr) \
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(addr == (void*) &mpi_fortran_argv_null)
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#define OMPI_IS_FORTRAN_ARGVS_NULL(addr) \
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(addr == (void*) &mpi_fortran_argvs_null)
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#define OMPI_IS_FORTRAN_ERRCODES_IGNORE(addr) \
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(addr == (void*) &mpi_fortran_errcodes_ignore)
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#define OMPI_IS_FORTRAN_STATUS_IGNORE(addr) \
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(addr == (void*) &mpi_fortran_status_ignore)
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#define OMPI_IS_FORTRAN_STATUSES_IGNORE(addr) \
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(addr == (void*) &mpi_fortran_statuses_ignore)
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#elif OMPI_F77_SINGLE_UNDERSCORE
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#define OMPI_IS_FORTRAN_BOTTOM(addr) \
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(addr == (void*) &mpi_fortran_bottom_)
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#define OMPI_IS_FORTRAN_IN_PLACE(addr) \
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(addr == (void*) &mpi_fortran_in_place_)
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#define OMPI_IS_FORTRAN_ARGV_NULL(addr) \
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(addr == (void*) &mpi_fortran_argv_null_)
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#define OMPI_IS_FORTRAN_ARGVS_NULL(addr) \
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(addr == (void*) &mpi_fortran_argvs_null_)
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#define OMPI_IS_FORTRAN_ERRCODES_IGNORE(addr) \
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(addr == (void*) &mpi_fortran_errcodes_ignore_)
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#define OMPI_IS_FORTRAN_STATUS_IGNORE(addr) \
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(addr == (void*) &mpi_fortran_status_ignore_)
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#define OMPI_IS_FORTRAN_STATUSES_IGNORE(addr) \
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(addr == (void*) &mpi_fortran_statuses_ignore_)
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#else
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#define OMPI_IS_FORTRAN_BOTTOM(addr) \
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(addr == (void*) &mpi_fortran_bottom__)
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#define OMPI_IS_FORTRAN_IN_PLACE(addr) \
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(addr == (void*) &mpi_fortran_in_place__)
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#define OMPI_IS_FORTRAN_ARGV_NULL(addr) \
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(addr == (void*) &mpi_fortran_argv_null__)
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#define OMPI_IS_FORTRAN_ARGVS_NULL(addr) \
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(addr == (void*) &mpi_fortran_argvs_null__)
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#define OMPI_IS_FORTRAN_ERRCODES_IGNORE(addr) \
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(addr == (void*) &mpi_fortran_errcodes_ignore__)
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#define OMPI_IS_FORTRAN_STATUS_IGNORE(addr) \
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(addr == (void*) &mpi_fortran_status_ignore__)
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#define OMPI_IS_FORTRAN_STATUSES_IGNORE(addr) \
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(addr == (void*) &mpi_fortran_statuses_ignore__)
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#endif /* weak / specific symbol type */
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/* Convert between Fortran and C MPI_BOTTOM */
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#define OMPI_F2C_BOTTOM(addr) (OMPI_IS_FORTRAN_BOTTOM(addr) ? MPI_BOTTOM : (addr))
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#define OMPI_F2C_IN_PLACE(addr) (OMPI_IS_FORTRAN_IN_PLACE(addr) ? MPI_IN_PLACE : (addr))
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#endif /* OMPI_F77_CONSTANTS_H */
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