diff options
Diffstat (limited to 'src/H5FDsplitter.h')
| -rw-r--r-- | src/H5FDsplitter.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/src/H5FDsplitter.h b/src/H5FDsplitter.h new file mode 100644 index 0000000..5a5ef29 --- /dev/null +++ b/src/H5FDsplitter.h @@ -0,0 +1,99 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * 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: The public header file for the "splitter" driver. + */ + +#ifndef H5FDsplitter_H +#define H5FDsplitter_H + +#define H5FD_SPLITTER (H5FD_splitter_init()) + +/* The version of the H5FD_splitter_vfd_config_t structure used */ +#define H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION 1 + +/* Maximum length of a filename/path string in the Write-Only channel, + * including the NULL-terminator. + */ +#define H5FD_SPLITTER_PATH_MAX 4096 + +/* Semi-unique constant used to help identify structure pointers */ +#define H5FD_SPLITTER_MAGIC 0x2B916880 + +/* ---------------------------------------------------------------------------- + * Structure: H5FD_spliiter_vfd_config_t + * + * One-stop shopping for configuring a Splitter VFD (rather than many + * paramaters passed into H5Pset/get functions). + * + * magic (int32_t) + * Semi-unique number, used to sanity-check that a given pointer is + * likely (or not) to be this structure type. MUST be first. + * If magic is not H5FD_SPLITTER_MAGIC, the structure (and/or pointer to) + * must be considered invalid. + * + * version (unsigned int) + * Version number of this structure -- informs component membership. + * If not H5FD_CURR_SPLITTER_VFD_CONFIG_VERSION, the structure (and/or + * pointer to) must be considered invalid. + * + * rw_fapl_id (hid_t) + * Library-given identification number of the Read/Write channel driver + * File Access Property List. + * The driver must support read/write access. + * Must be set to H5P_DEFAULT or a valid FAPL ID. + * + * wo_fapl_id (hid_t) + * Library-given identification number of the Read/Write channel driver + * File Access Property List. + * The driver feature flags must include H5FD_FEAT_DEFAULT_VFD_COMPAITBLE. + * Must be set to H5P_DEFAULT or a valid FAPL ID. + * + * wo_file_path (char[H5FD_SPLITTER_PATH_MAX + 1]) + * String buffer for the Write-Only channel target file. + * Must be null-terminated, cannot be empty. + * + * log_file_path (char[H5FD_SPLITTER_PATH_MAX + 1]) + * String buffer for the Splitter VFD logging output. + * Must be null-terminated. + * If null, no logfile is created. + * + * ignore_wo_errors (hbool_t) + * Toggle flag for how judiciously to respond to errors on the Write-Only + * channel. + * + * ---------------------------------------------------------------------------- + */ +typedef struct H5FD_splitter_vfd_config_t { + int32_t magic; + unsigned int version; + hid_t rw_fapl_id; + hid_t wo_fapl_id; + char wo_path[H5FD_SPLITTER_PATH_MAX + 1]; + char log_file_path[H5FD_SPLITTER_PATH_MAX + 1]; + hbool_t ignore_wo_errs; +} H5FD_splitter_vfd_config_t; + +#ifdef __cplusplus +extern "C" { +#endif +H5_DLL hid_t H5FD_splitter_init(void); +H5_DLL herr_t H5Pset_fapl_splitter(hid_t fapl_id, H5FD_splitter_vfd_config_t *config_ptr); +H5_DLL herr_t H5Pget_fapl_splitter(hid_t fapl_id, H5FD_splitter_vfd_config_t *config_ptr); + +#ifdef __cplusplus +} +#endif + +#endif + |