diff options
Diffstat (limited to 'tools/test/h5copy/dynlib_copy.c')
-rw-r--r-- | tools/test/h5copy/dynlib_copy.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/tools/test/h5copy/dynlib_copy.c b/tools/test/h5copy/dynlib_copy.c new file mode 100644 index 0000000..571452e --- /dev/null +++ b/tools/test/h5copy/dynlib_copy.c @@ -0,0 +1,89 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by The HDF Group. * + * 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 COPYING file, which can be found at the root of the source code * + * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. * + * If you do not have access to either file, you may request a copy from * + * help@hdfgroup.org. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ +/* + * Purpose: Tests the plugin module (H5PL) + */ + +#include <stdlib.h> +#include <stdio.h> +#include "H5PLextern.h" + +#define H5Z_FILTER_DYNLIBUD 300 +#define MULTIPLIER 3 + +static size_t H5Z_filter_dynlibud(unsigned int flags, size_t cd_nelmts, + const unsigned int *cd_values, size_t nbytes, size_t *buf_size, void **buf); + +/* This message derives from H5Z */ +const H5Z_class2_t H5Z_DYNLIBUD[1] = {{ + H5Z_CLASS_T_VERS, /* H5Z_class_t version */ + H5Z_FILTER_DYNLIBUD, /* Filter id number */ + 1, 1, /* Encoding and decoding enabled */ + "dynlibud", /* Filter name for debugging */ + NULL, /* The "can apply" callback */ + NULL, /* The "set local" callback */ + (H5Z_func_t)H5Z_filter_dynlibud, /* The actual filter function */ +}}; + +H5PL_type_t H5PLget_plugin_type(void) {return H5PL_TYPE_FILTER;} +const void *H5PLget_plugin_info(void) {return H5Z_DYNLIBUD;} + +/*------------------------------------------------------------------------- + * Function: H5Z_filter_dynlibud + * + * Purpose: A dynlib2 filter method that multiplies the original value + * during write and divide the original value during read. It + * will be built as a shared library. plugin.c test will load + * and use this filter library. + * + * Return: Success: Data chunk size + * + * Failure: 0 + *------------------------------------------------------------------------- + */ +static size_t +H5Z_filter_dynlibud(unsigned int flags, size_t cd_nelmts, + const unsigned int *cd_values, size_t nbytes, + size_t *buf_size, void **buf) +{ + char *int_ptr = (char *)*buf; /* Pointer to the data values */ + size_t buf_left = *buf_size; /* Amount of data buffer left to process */ + + /* Check for the correct number of parameters */ + if(cd_nelmts > 0) + return(0); + + /* Assignment to eliminate unused parameter warning. */ + cd_values = cd_values; + + if(flags & H5Z_FLAG_REVERSE) { /*read*/ + /* Subtract the original value with MULTIPLIER */ + while(buf_left > 0) { + char temp = *int_ptr; + *int_ptr = temp - MULTIPLIER; + int_ptr++; + buf_left -= sizeof(*int_ptr); + } /* end while */ + } /* end if */ + else { /*write*/ + /* Add the original value with MULTIPLIER */ + while(buf_left > 0) { + char temp = *int_ptr; + *int_ptr = temp + MULTIPLIER; + int_ptr++; + buf_left -= sizeof(*int_ptr); + } /* end while */ + } /* end else */ + + return nbytes; +} /* end H5Z_filter_dynlibud() */ + |