mirror of
https://github.com/HDFGroup/hdf5.git
synced 2025-01-12 15:04:59 +08:00
fc88fcde10
* Merge examples repo into library * Change grepTest to be more fault-tolerant * Update examples macro file * Exclude all Fortran examples from doxygen
141 lines
4.7 KiB
Fortran
141 lines
4.7 KiB
Fortran
! ***********************************************************
|
|
!
|
|
! this example shows how to set the space allocation time
|
|
! for a dataset. the program first creates two datasets,
|
|
! one with the default allocation time (late) and one with
|
|
! early allocation time, and displays whether each has been
|
|
! allocated and their allocation size. next, it writes data
|
|
! to the datasets, and again displays whether each has been
|
|
! allocated and their allocation size.
|
|
!
|
|
! this file is intended for use with hdf5 library version 1.8
|
|
!
|
|
! ***********************************************************
|
|
|
|
PROGRAM main
|
|
|
|
USE HDF5
|
|
|
|
IMPLICIT NONE
|
|
|
|
CHARACTER(LEN=15), PARAMETER :: filename = "h5ex_d_alloc.h5"
|
|
CHARACTER(LEN=3) , PARAMETER :: dataset1 = "DS1"
|
|
CHARACTER(LEN=3) , PARAMETER :: dataset2 = "DS2"
|
|
INTEGER , PARAMETER :: dim0 = 4
|
|
INTEGER , PARAMETER :: dim1 = 7
|
|
INTEGER , PARAMETER :: fillval = 99
|
|
INTEGER , PARAMETER :: rank = 2
|
|
|
|
INTEGER :: space_status
|
|
INTEGER :: i, j
|
|
INTEGER :: hdferr
|
|
INTEGER(HID_T) :: file, space, dset1, dset2, dcpl ! handles
|
|
INTEGER(HSIZE_T) :: storage_size
|
|
INTEGER(HSIZE_T), DIMENSION(1:2) :: dims = (/dim0, dim1/) ! size write buffer
|
|
INTEGER , DIMENSION(1:dim0,1:dim1) :: wdata ! write buffer
|
|
!
|
|
! Initialize FORTRAN interface.
|
|
!
|
|
CALL h5open_f(hdferr)
|
|
!
|
|
! Initialize data.
|
|
!
|
|
DO i = 1, dim0
|
|
DO j = 1, dim1
|
|
wdata(i,j) = i*j-j
|
|
ENDDO
|
|
ENDDO
|
|
!
|
|
! Create a new file using the default properties.
|
|
!
|
|
CALL h5fcreate_f(filename, H5F_ACC_TRUNC_F, file, hdferr)
|
|
!
|
|
! Create dataspace.
|
|
!
|
|
CALL h5screate_simple_f(rank, dims, space, hdferr)
|
|
!
|
|
! Create the dataset creation property list, and set the chunk size.
|
|
!
|
|
CALL h5pcreate_f(H5P_DATASET_CREATE_F, dcpl, hdferr)
|
|
!
|
|
! Set the allocation time to "early". This way we can be sure
|
|
! that reading from the dataset immediately after creation will
|
|
! return the fill value.
|
|
!
|
|
CALL h5pset_alloc_time_f(dcpl, H5D_ALLOC_TIME_EARLY_F,hdferr)
|
|
!
|
|
WRITE(*,'(/,"Creating datasets...",/)')
|
|
WRITE(*,'(A," has allocation time H5D_ALLOC_TIME_LATE_F")') dataset1
|
|
WRITE(*,'(A," has allocation time H5D_ALLOC_TIME_EARLY_F"/)') dataset2
|
|
!
|
|
! Create the dataset using the dataset creation property list.
|
|
!
|
|
CALL h5dcreate_f(file, dataset1, H5T_STD_I32LE, space, dset1, hdferr)
|
|
CALL h5dcreate_f(file, dataset2, H5T_STD_I32LE, space, dset2, hdferr, dcpl)
|
|
!
|
|
! Retrieve and print space status and storage size for dset1.
|
|
!
|
|
storage_size = 0
|
|
CALL h5dget_space_status_f(dset1, space_status, hdferr)
|
|
CALL h5dget_storage_size_f(dset1, storage_size, hdferr)
|
|
!
|
|
IF(space_status.EQ.H5D_SPACE_STS_ALLOCATED_F)THEN
|
|
WRITE(*,'("Space for ",A," has been allocated.")') dataset1
|
|
ELSE
|
|
WRITE(*,'("Space for ",A," has not been allocated.")') dataset1
|
|
END IF
|
|
WRITE(*,'("Storage size for ",A," is: ",I0," bytes.")') dataset1, storage_size
|
|
!
|
|
! Retrieve and print space status and storage size for dset2.
|
|
!
|
|
CALL h5dget_space_status_f(dset2, space_status, hdferr)
|
|
CALL h5dget_storage_size_f(dset2, storage_size, hdferr)
|
|
!
|
|
IF(space_status.EQ.H5D_SPACE_STS_ALLOCATED_F)THEN
|
|
WRITE(*,'("Space for ",A," has been allocated.")') dataset2
|
|
ELSE
|
|
WRITE(*,'("Space for ",A," has not been allocated.")') dataset2
|
|
END IF
|
|
WRITE(*,'("Storage size for ",A," is: ",I0," bytes.")') dataset2, storage_size
|
|
!
|
|
WRITE(*,'(/,"Writing data...",/)')
|
|
!
|
|
! Write the data to the datasets.
|
|
!
|
|
CALL h5dwrite_f(dset1, H5T_NATIVE_INTEGER, wdata, dims, hdferr)
|
|
CALL h5dwrite_f(dset2, H5T_NATIVE_INTEGER, wdata, dims, hdferr)
|
|
!
|
|
! Retrieve and print space status and storage size for dset1.
|
|
!
|
|
CALL h5dget_space_status_f(dset1, space_status, hdferr)
|
|
CALL h5dget_storage_size_f(dset1, storage_size, hdferr)
|
|
!
|
|
IF(space_status.EQ.H5D_SPACE_STS_ALLOCATED_F)THEN
|
|
WRITE(*,'("Space for ",A," has been allocated.")') dataset1
|
|
ELSE
|
|
WRITE(*,'("Space for ",A," has not been allocated.")') dataset1
|
|
END IF
|
|
WRITE(*,'("Storage size for ",A," is: ",I0," bytes.")') dataset1, storage_size
|
|
!
|
|
! Retrieve and print space status and storage size for dset2.
|
|
!
|
|
CALL h5dget_space_status_f(dset2, space_status, hdferr)
|
|
CALL h5dget_storage_size_f(dset2, storage_size, hdferr)
|
|
!
|
|
IF(space_status.EQ.H5D_SPACE_STS_ALLOCATED_F)THEN
|
|
WRITE(*,'("Space for ",A," has been allocated.")') dataset2
|
|
ELSE
|
|
WRITE(*,'("Space for ",A," has not been allocated.")') dataset2
|
|
END IF
|
|
WRITE(*,'("Storage size for ",A," is: ",I0," bytes.",/)') dataset2, storage_size
|
|
!
|
|
! Close and release resources.
|
|
!
|
|
CALL h5pclose_f(dcpl , hdferr)
|
|
CALL h5dclose_f(dset1, hdferr)
|
|
CALL h5dclose_f(dset2, hdferr)
|
|
CALL h5sclose_f(space, hdferr)
|
|
CALL h5fclose_f(file , hdferr)
|
|
!
|
|
END PROGRAM main
|