Source of H5PL.c - hdf5_ep

 
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        /* Return a handle for the function H5PLget_plugin_info in the dynamic library.
         * The plugin library is suppose to define this function.
         */
        if(NULL == (get_plugin_info = (H5PL_get_plugin_info_t)H5PL_GET_LIB_FUNC(handle, "H5PLget_plugin_info"))) {
            if(H5PL__close(handle) < 0)
                HGOTO_ERROR(H5E_PLUGIN, H5E_CLOSEERROR, FAIL, "can't close dynamic library")
        } /* end if */
        else {
            const H5Z_class2_t *plugin_info;
            H5Z_class2_t *plugin_copy = NULL;
​
            /* Invoke H5PLget_plugin_info to verify this is the right library we are looking for.
             * Move on if it isn't.
             */
            if(NULL == (plugin_info = (const H5Z_class2_t *)(*get_plugin_info)())) {
                if(H5PL__close(handle) < 0)
                    HGOTO_ERROR(H5E_PLUGIN, H5E_CLOSEERROR, FAIL, "can't close dynamic library")
                HGOTO_ERROR(H5E_PLUGIN, H5E_CANTGET, FAIL, "can't get plugin info")
            } /* end if */
​
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​
                    H5PL_table_g = table;
                    H5PL_table_alloc_g = n;
                } /* end if */
​
                (H5PL_table_g[H5PL_table_used_g]).handle = handle;
                (H5PL_table_g[H5PL_table_used_g]).pl_type = pl_type;
                (H5PL_table_g[H5PL_table_used_g]).pl_id = plugin_info->id;
                H5PL_table_used_g++;
​
                /* allocate local copy of plugin info */
                if (NULL == (plugin_copy = (H5Z_class2_t *)H5MM_calloc(sizeof(H5Z_class2_t))))
                    HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for plugin info")
                /* Set the plugin info to return */
                *pl_info = (const void *)plugin_copy;
​
                plugin_copy->version = plugin_info->version;
                plugin_copy->id = plugin_info->id;
                plugin_copy->encoder_present = plugin_info->encoder_present;
                plugin_copy->decoder_present = plugin_info->decoder_present;
                plugin_copy->can_apply = plugin_info->can_apply;
                plugin_copy->set_local = plugin_info->set_local;
                plugin_copy->filter = plugin_info->filter;
                /* copy the user's string into the property */
                if(NULL == (plugin_copy->name = (char *)H5MM_xstrdup(plugin_info->name)))
                    HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "can't allocate memory for plugin info name")
                *pl_info = (const void *)plugin_info;
​
                /* Indicate success */
                ret_value = TRUE;
            } /* end if */
            else
                if(H5PL__close(handle) < 0)
                    HGOTO_ERROR(H5E_PLUGIN, H5E_CLOSEERROR, FAIL, "can't close dynamic library")
        } /* end if */
    } /* end else */
​
done:
    /* unallocate local copy of plugin info on failure */
    if (FAIL == ret_value && *pl_info) {
        *pl_info = (H5Z_class2_t *)H5MM_xfree(*pl_info);
    }
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5PL__open() */
​
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/*-------------------------------------------------------------------------
 * Function:    H5PL__search_table
 *
 * Purpose:     Search in the list of already opened dynamic libraries
 *              to see if the one we are looking for is already opened.
 *
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    FUNC_ENTER_STATIC
​
    /* Search in the table of already opened dynamic libraries */
    if(H5PL_table_used_g > 0) {
        size_t         i;
​
        for(i = 0; i < H5PL_table_used_g; i++) {
            if((plugin_type == (H5PL_table_g[i]).pl_type) && (type_id == (H5PL_table_g[i]).pl_id)) {
                H5PL_get_plugin_info_t get_plugin_info;
                const H5Z_class2_t   *plugin_info;
                H5Z_class2_t *plugin_copy = NULL;
​
                if(NULL == (get_plugin_info = (H5PL_get_plugin_info_t)H5PL_GET_LIB_FUNC((H5PL_table_g[i]).handle, "H5PLget_plugin_info")))
                    HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "can't get function for H5PLget_plugin_info")
​
                if(NULL == (plugin_info = (const H5Z_class2_t *)(*get_plugin_info)()))
                    HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "can't get plugin info")
​
                if (NULL == (plugin_copy = (H5Z_class2_t *)H5MM_calloc(sizeof(H5Z_class2_t))))
                    HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for plugin info")
                /* Set the plugin info to return */
                *info = (const void *)plugin_copy;
​
                plugin_copy->version = plugin_info->version;
                plugin_copy->id = plugin_info->id;
                plugin_copy->encoder_present = plugin_info->encoder_present;
                plugin_copy->decoder_present = plugin_info->decoder_present;
                plugin_copy->can_apply = plugin_info->can_apply;
                plugin_copy->set_local = plugin_info->set_local;
                plugin_copy->filter = plugin_info->filter;
                /* copy the user's string into the property */
                if(NULL == (plugin_copy->name = (char *)H5MM_xstrdup(plugin_info->name)))
                    HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "can't allocate memory for plugin info name")
​
                *info = plugin_info;
                HGOTO_DONE(TRUE)
            } /* end if */
        } /* end for */
    } /* end if */
​
done:
    /* unallocate local copy of plugin info on failure */
    if (FAIL == ret_value && *info) {
        *info = (H5Z_class2_t *)H5MM_xfree(*info);
    }
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5PL__search_table() */
​
•
/*-------------------------------------------------------------------------
 * Function:    H5PL__close
 *
 * Purpose:     Closes the handle for dynamic library
 *
 * Return:      Non-negative on success/Negative on failure