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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by Akadio, Inc. *
* 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://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* The public header file for the VFD SWMR driver.
*/
#ifndef H5FDvfd_swmr_H
#define H5FDvfd_swmr_H
#define H5FD_VFD_SWMR (H5FDperform_init(H5FD_vfd_swmr_init))
#define H5FD_VFD_SWMR_VALUE H5_VFD_SWMR
/* Semi-unique constant used to help identify structure pointers */
#define H5FD_VFD_SWMR_READER_MAGIC 0xABC123
/* ----------------------------------------------------------------------------
* Structure: H5FD_vfd_swmr_reader_fapl_t
*
* Structure for configuring the VFD SWMR reader VFD. This structure and the
* associated FAPL entry and get / set routines are for HDF5 library use only,
* and should never be seen by the user.
*
* When a file is opened in VFD SWMR mode, the VFD SWMR reader VFD is inserted
* at the top of the user supplied (or default) VFD stack.
*
* The fields of this structure are discussed indvidually below. Note that
* there is no version field, since this structure should not be accessible
* to the user. The set of fields is quite limited, as most of the necessary
* configuration data is taken from the VFD SWMR configuration FAPL entry
*
* 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_VFD_SWMR_READER_MAGIC, the structure (and/or
* pointer to) must be considered invalid.
*
* fapl_id (hid_t)
* Library-given identification number of the FAPL containing the user
* supplied VFD stack. Must be set to H5P_DEFAULT or contain a file
* driver entry specifying a VFD that supports VFD SWMR
*
* ----------------------------------------------------------------------------
*/
typedef struct H5FD_vfd_swmr_reader_fapl_t {
int32_t magic;
hid_t fapl_id;
} H5FD_vfd_swmr_reader_fapl_t;
#ifdef __cplusplus
extern "C" {
#endif
H5_DLL hid_t H5FD_vfd_swmr_init(void);
H5_DLL herr_t H5P_pop_vfd_swmr_reader_vfd_off_fapl(hid_t fapl_id);
H5_DLL herr_t H5P_push_vfd_swmr_reader_vfd_on_fapl(hid_t fapl_id);
#ifdef __cplusplus
}
#endif
#endif
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