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Diffstat (limited to 'test/dynlib4.c')
| -rw-r--r-- | test/dynlib4.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/test/dynlib4.c b/test/dynlib4.c new file mode 100644 index 0000000..8da0270 --- /dev/null +++ b/test/dynlib4.c @@ -0,0 +1,104 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * 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 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 document set and is * + * linked from the top-level documents page. It can also be found at * + * http://hdfgroup.org/HDF5/doc/Copyright.html. 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_DYNLIB4 260 + +#define PUSH_ERR(func, minor, str) H5Epush2(H5E_DEFAULT, __FILE__, func, __LINE__, H5E_ERR_CLS, H5E_PLUGIN, minor, str) + +static size_t H5Z_filter_dynlib4(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_DYNLIB4[1] = {{ + H5Z_CLASS_T_VERS, /* H5Z_class_t version */ + H5Z_FILTER_DYNLIB4, /* Filter id number */ + 1, 1, /* Encoding and decoding enabled */ + "dynlib4", /* Filter name for debugging */ + NULL, /* The "can apply" callback */ + NULL, /* The "set local" callback */ + (H5Z_func_t)H5Z_filter_dynlib4, /* The actual filter function */ +}}; + +H5PL_type_t H5PLget_plugin_type(void) {return H5PL_TYPE_FILTER;} +const void *H5PLget_plugin_info(void) {return H5Z_DYNLIB4;} + +/*------------------------------------------------------------------------- + * Function: H5Z_filter_dynlib4 + * + * Purpose: A dynlib4 filter method that adds on and subtract from + * the original value with another value. It will be built + * as a shared library. plugin.c test will load and use + * this filter library. Designed to call a HDF function. + * + * Return: Success: Data chunk size + * + * Failure: 0 + * + *------------------------------------------------------------------------- + */ +static size_t +H5Z_filter_dynlib4(unsigned int flags, size_t cd_nelmts, + const unsigned int *cd_values, size_t nbytes, + size_t *buf_size, void **buf) +{ + int *int_ptr = (int *)*buf; /* Pointer to the data values */ + size_t buf_left = *buf_size; /* Amount of data buffer left to process */ + int add_on = 0; + unsigned ver_info[3]; + + /* Check for the library version */ + if(H5get_libversion(&ver_info[0], &ver_info[1], &ver_info[2]) < 0) { + PUSH_ERR("dynlib4", H5E_CALLBACK, "H5get_libversion"); + return(0); + } + /* Check for the correct number of parameters */ + if(cd_nelmts == 0) + return(0); + + /* Check that permanent parameters are set correctly */ + if(cd_values[0] > 9) + return(0); + + if(ver_info[0] != cd_values[1] || ver_info[1] != cd_values[2]) { + PUSH_ERR("dynlib4", H5E_CALLBACK, "H5get_libversion does not match"); + return(0); + } + + add_on = (int)cd_values[0]; + + if(flags & H5Z_FLAG_REVERSE) { /*read*/ + /* Substract the "add on" value to all the data values */ + while(buf_left > 0) { + *int_ptr++ -= add_on; + buf_left -= sizeof(int); + } /* end while */ + } /* end if */ + else { /*write*/ + /* Add the "add on" value to all the data values */ + while(buf_left > 0) { + *int_ptr++ += add_on; + buf_left -= sizeof(int); + } /* end while */ + } /* end else */ + + return nbytes; +} /* end H5Z_filter_dynlib4() */ + |