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Diffstat (limited to 'src/H5FDmpi.h')
| -rw-r--r-- | src/H5FDmpi.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/H5FDmpi.h b/src/H5FDmpi.h new file mode 100644 index 0000000..aac7bf6 --- /dev/null +++ b/src/H5FDmpi.h @@ -0,0 +1,94 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by the Board of Trustees of the University of Illinois. * + * All rights reserved. * + * * + * This file is part of HDF5. The full HDF5 copyright notice, including * + * terms governing use, modification, and redistribution, is contained in * + * the files COPYING and Copyright.html. COPYING can be found at the root * + * of the source code distribution tree; Copyright.html can be found at the * + * root level of an installed copy of the electronic HDF5 document set and * + * is linked from the top-level documents page. It can also be found at * + * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have * + * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/* + * Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu> + * Friday, January 30, 2004 + * + * Purpose: The public header file for common items for all MPI VFL drivers + */ +#ifndef H5FDmpi_H +#define H5FDmpi_H + +/* Type of I/O for data transfer properties */ +typedef enum H5FD_mpio_xfer_t { + H5FD_MPIO_INDEPENDENT = 0, /*zero is the default*/ + H5FD_MPIO_COLLECTIVE +} H5FD_mpio_xfer_t; + +#ifdef H5_HAVE_PARALLEL + +/* Sub-class the H5FD_class_t to add more specific functions for MPI-based VFDs */ +typedef struct H5FD_class_mpi_t { + H5FD_class_t super; /* Superclass information & methods */ + int (*get_rank)(const H5FD_t *file); /* Get the MPI rank of a process */ + int (*get_size)(const H5FD_t *file); /* Get the MPI size of a communicator */ + MPI_Comm (*get_comm)(const H5FD_t *file); /* Get the communicator for a file */ +} H5FD_class_mpi_t; +#endif /* H5_HAVE_PARALLEL */ + +/* Include all the MPI VFL headers */ +#include "H5FDfphdf5.h" /* Flexible PHDF5 file driver */ +#include "H5FDmpio.h" /* MPI I/O file driver */ +#include "H5FDmpiposix.h" /* MPI/posix I/O file driver */ + +/* Macros */ + +/* Single macro to check for all file drivers that use MPI */ +#define IS_H5FD_MPI(file) \ + (IS_H5FD_MPIO(file) || IS_H5FD_MPIPOSIX(file) || IS_H5FD_FPHDF5(file)) + +#ifdef H5_HAVE_PARALLEL +/* ======== Temporary data transfer properties ======== */ +/* Definitions for memory MPI type property */ +#define H5FD_MPI_XFER_MEM_MPI_TYPE_NAME "H5FD_mpi_mem_mpi_type" +#define H5FD_MPI_XFER_MEM_MPI_TYPE_SIZE sizeof(MPI_Datatype) +/* Definitions for file MPI type property */ +#define H5FD_MPI_XFER_FILE_MPI_TYPE_NAME "H5FD_mpi_file_mpi_type" +#define H5FD_MPI_XFER_FILE_MPI_TYPE_SIZE sizeof(MPI_Datatype) + +/* + * The view is set to this value + */ +H5_DLLVAR char H5FD_mpi_native_g[]; + +/* Function prototypes */ +#ifdef __cplusplus +extern "C" { +#endif +/* General routines */ +H5_DLL haddr_t H5FD_mpi_MPIOff_to_haddr(MPI_Offset mpi_off); +H5_DLL herr_t H5FD_mpi_haddr_to_MPIOff(haddr_t addr, MPI_Offset *mpi_off/*out*/); +H5_DLL herr_t H5FD_mpi_comm_info_dup(MPI_Comm comm, MPI_Info info, + MPI_Comm *comm_new, MPI_Info *info_new); +H5_DLL herr_t H5FD_mpi_comm_info_free(MPI_Comm *comm, MPI_Info *info); +#ifdef NOT_YET +H5_DLL herr_t H5FD_mpio_wait_for_left_neighbor(H5FD_t *file); +H5_DLL herr_t H5FD_mpio_signal_right_neighbor(H5FD_t *file); +#endif /* NOT_YET */ +H5_DLL herr_t H5FD_mpi_setup_collective(hid_t dxpl_id, MPI_Datatype btype, + MPI_Datatype ftype); +H5_DLL herr_t H5FD_mpi_teardown_collective(hid_t dxpl_id); + +/* Driver specific methods */ +H5_DLL int H5FD_mpi_get_rank(const H5FD_t *file); +H5_DLL int H5FD_mpi_get_size(const H5FD_t *file); +H5_DLL MPI_Comm H5FD_mpi_get_comm(const H5FD_t *_file); +#ifdef __cplusplus +} +#endif + +#endif /* H5_HAVE_PARALLEL */ + +#endif /* H5FDmpi_H */ |