mirror of
https://github.com/HDFGroup/hdf5.git
synced 2024-12-27 08:01:04 +08:00
427ff7da28
Bug Fix/Code Cleanup/Doc Cleanup/Optimization/Branch Sync :-)
Description:
Generally speaking, this is the "signed->unsigned" change to selections.
However, in the process of merging code back, things got stickier and stickier
until I ended up doing a big "sync the two branches up" operation. So... I
brought back all the "infrastructure" fixes from the development branch to the
release branch (which I think were actually making some improvement in
performance) as well as fixed several bugs which had been fixed in one branch,
but not the other.
I've also tagged the repository before making this checkin with the label
"before_signed_unsigned_changes".
Platforms tested:
FreeBSD 4.10 (sleipnir) w/parallel & fphdf5
FreeBSD 4.10 (sleipnir) w/threadsafe
FreeBSD 4.10 (sleipnir) w/backward compatibility
Solaris 2.7 (arabica) w/"purify options"
Solaris 2.8 (sol) w/FORTRAN & C++
AIX 5.x (copper) w/parallel & FORTRAN
IRIX64 6.5 (modi4) w/FORTRAN
Linux 2.4 (heping) w/FORTRAN & C++
Misc. update:
180 lines
6.8 KiB
Fortran
180 lines
6.8 KiB
Fortran
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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! Copyright by the Board of Trustees of the University of Illinois. *
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! All rights reserved. *
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! *
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! This file is part of HDF5. The full HDF5 copyright notice, including *
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! terms governing use, modification, and redistribution, is contained in *
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! the files COPYING and Copyright.html. COPYING can be found at the root *
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! of the source code distribution tree; Copyright.html can be found at the *
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! root level of an installed copy of the electronic HDF5 document set and *
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! is linked from the top-level documents page. It can also be found at *
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! http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
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! access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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!
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!
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! This program shows how to create, store and dereference references
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! to the dataset regions.
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! Program creates a file and writes two dimensional integer dataset
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! to it. Then program creates and stores references to the hyperslab
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! and 3 points selected in the integer dataset, in the second dataset.
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! Program reopens the second dataset, reads and dereferences region
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! references, and then reads and displays selected data from the
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! integer dataset.
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!
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PROGRAM REG_REFERENCE
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USE HDF5 ! This module contains all necessary modules
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IMPLICIT NONE
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CHARACTER(LEN=10), PARAMETER :: filename = "FORTRAN.h5"
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CHARACTER(LEN=6), PARAMETER :: dsetnamev = "MATRIX"
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CHARACTER(LEN=17), PARAMETER :: dsetnamer = "REGION_REFERENCES"
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INTEGER(HID_T) :: file_id ! File identifier
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INTEGER(HID_T) :: space_id ! Dataspace identifier
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INTEGER(HID_T) :: spacer_id ! Dataspace identifier
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INTEGER(HID_T) :: dsetv_id ! Dataset identifier
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INTEGER(HID_T) :: dsetr_id ! Dataset identifier
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INTEGER :: error
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TYPE(hdset_reg_ref_t_f) , DIMENSION(2) :: ref ! Buffers to store references
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TYPE(hdset_reg_ref_t_f) , DIMENSION(2) :: ref_out !
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INTEGER(HSIZE_T), DIMENSION(2) :: dims = (/2,9/) ! Datasets dimensions
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INTEGER(HSIZE_T), DIMENSION(1) :: dimsr = (/2/) !
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INTEGER(HSIZE_T), DIMENSION(2) :: start
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INTEGER(HSIZE_T), DIMENSION(2) :: count
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INTEGER :: rankr = 1
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INTEGER :: rank = 2
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INTEGER , DIMENSION(2,9) :: data
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INTEGER , DIMENSION(2,9) :: data_out = 0
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INTEGER(HSIZE_T) , DIMENSION(2,3) :: coord
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INTEGER(SIZE_T) ::num_points = 3 ! Number of selected points
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INTEGER :: i, j
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INTEGER(HSIZE_T), DIMENSION(1) :: ref_size
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INTEGER(HSIZE_T), DIMENSION(2) :: data_dims
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coord = reshape((/1,1,2,7,1,9/), (/2,3/)) ! Coordinates of selected points
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data = reshape ((/1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6/), (/2,9/))
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!
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! Initialize FORTRAN interface.
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!
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CALL h5open_f(error)
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!
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! Create a new file.
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!
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CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file_id, error)
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! Default file access and file creation
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! properties are used.
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!
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! Create dataspaces:
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!
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! for dataset with references to dataset regions
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!
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CALL h5screate_simple_f(rankr, dimsr, spacer_id, error)
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!
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! for integer dataset
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!
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CALL h5screate_simple_f(rank, dims, space_id, error)
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!
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! Create and write datasets:
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!
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! Integer dataset
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!
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CALL h5dcreate_f(file_id, dsetnamev, H5T_NATIVE_INTEGER, space_id, &
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dsetv_id, error)
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data_dims(1) = 2
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data_dims(2) = 9
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CALL h5dwrite_f(dsetv_id, H5T_NATIVE_INTEGER, data, data_dims, error)
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CALL h5dclose_f(dsetv_id, error)
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!
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! Dataset with references
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!
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CALL h5dcreate_f(file_id, dsetnamer, H5T_STD_REF_DSETREG, spacer_id, &
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dsetr_id, error)
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!
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! Create a reference to the hyperslab selection.
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!
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start(1) = 0
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start(2) = 3
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count(1) = 2
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count(2) = 3
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CALL h5sselect_hyperslab_f(space_id, H5S_SELECT_SET_F, &
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start, count, error)
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CALL h5rcreate_f(file_id, dsetnamev, space_id, ref(1), error)
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!
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! Create a reference to elements selection.
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!
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CALL h5sselect_none_f(space_id, error)
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CALL h5sselect_elements_f(space_id, H5S_SELECT_SET_F, rank, num_points,&
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coord, error)
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CALL h5rcreate_f(file_id, dsetnamev, space_id, ref(2), error)
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!
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! Write dataset with the references.
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!
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ref_size(1) = size(ref)
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CALL h5dwrite_f(dsetr_id, H5T_STD_REF_DSETREG, ref, ref_size, error)
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!
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! Close all objects.
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!
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CALL h5sclose_f(space_id, error)
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CALL h5sclose_f(spacer_id, error)
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CALL h5dclose_f(dsetr_id, error)
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CALL h5fclose_f(file_id, error)
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!
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! Reopen the file to test selections.
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!
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CALL h5fopen_f (filename, H5F_ACC_RDWR_F, file_id, error)
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CALL h5dopen_f(file_id, dsetnamer, dsetr_id, error)
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!
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! Read references to the dataset regions.
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!
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ref_size(1) = size(ref_out)
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CALL h5dread_f(dsetr_id, H5T_STD_REF_DSETREG, ref_out, ref_size, error)
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!
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! Dereference the first reference.
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!
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CALL H5rdereference_f(dsetr_id, ref_out(1), dsetv_id, error)
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CALL H5rget_region_f(dsetr_id, ref_out(1), space_id, error)
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!
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! Read selected data from the dataset.
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!
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CALL h5dread_f(dsetv_id, H5T_NATIVE_INTEGER, data_out, data_dims, error, &
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mem_space_id = space_id, file_space_id = space_id)
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write(*,*) "Hypeslab selection"
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write(*,*)
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do i = 1,2
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write(*,*) (data_out (i,j), j = 1,9)
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enddo
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write(*,*)
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CALL h5sclose_f(space_id, error)
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CALL h5dclose_f(dsetv_id, error)
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data_out = 0
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!
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! Dereference the second reference.
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!
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CALL H5rdereference_f(dsetr_id, ref_out(2), dsetv_id, error)
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CALL H5rget_region_f(dsetr_id, ref_out(2), space_id, error)
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!
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! Read selected data from the dataset.
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!
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CALL h5dread_f(dsetv_id, H5T_NATIVE_INTEGER, data_out, data_dims, error, &
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mem_space_id = space_id, file_space_id = space_id)
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write(*,*) "Point selection"
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write(*,*)
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do i = 1,2
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write(*,*) (data_out (i,j), j = 1,9)
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enddo
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!
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! Close all objects
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!
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CALL h5sclose_f(space_id, error)
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CALL h5dclose_f(dsetv_id, error)
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CALL h5dclose_f(dsetr_id, error)
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!
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! Close FORTRAN interface.
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!
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CALL h5close_f(error)
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END PROGRAM REG_REFERENCE
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