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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* Copyright by the Board of Trustees of the University of Illinois. *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* This file contains public declarations for the H5R module.
*/
#ifndef _H5Rpublic_H
#define _H5Rpublic_H
/* Public headers needed by this file */
#include "H5public.h"
#include "H5Gpublic.h"
#include "H5Ipublic.h"
/*****************/
/* Public Macros */
/*****************/
/* Deprecated reference buffer sizes that are kept for backward compatibility */
#define H5R_OBJ_REF_BUF_SIZE sizeof(haddr_t)
#define H5R_DSET_REG_REF_BUF_SIZE (sizeof(haddr_t) + 4)
/* Default reference buffer size.
* Note! Be careful with the sizes of the references because they should really
* depend on the run-time values in the file.
*/
#define H5R_REF_BUF_SIZE (64)
/*******************/
/* Public Typedefs */
/*******************/
/*
* Reference types allowed.
* DO NOT CHANGE THE ORDER or VALUES as reference type values are encoded into
* the datatype message header.
*/
typedef enum {
H5R_BADTYPE = (-1), /* Invalid reference type */
H5R_OBJECT1 = 0, /* Backward compatibility (object) */
H5R_DATASET_REGION1 = 1, /* Backward compatibility (region) */
H5R_OBJECT2 = 2, /* Object reference */
H5R_DATASET_REGION2 = 3, /* Region reference */
H5R_ATTR = 4, /* Attribute Reference */
H5R_MAXTYPE = 5 /* Highest type (invalid) */
} H5R_type_t;
/* Deprecated types are kept for backward compatibility with previous versions */
/**
* Deprecated object reference type that is used with deprecated reference APIs.
* Note! This type can only be used with the "native" HDF5 VOL connector.
*/
typedef haddr_t hobj_ref_t;
/**
* Dataset region reference type that is used with deprecated reference APIs.
* (Buffer to store heap ID and index)
* This needs to be large enough to store largest haddr_t in a worst case
* machine (8 bytes currently) plus an int.
* Note! This type can only be used with the "native" HDF5 VOL connector.
*/
typedef struct {
uint8_t __data[H5R_DSET_REG_REF_BUF_SIZE];
} hdset_reg_ref_t;
/**
* Opaque reference type. The same reference type is used for object,
* dataset region and attribute references. This is the type that
* should always be used with the current reference API.
*/
typedef struct {
union {
uint8_t __data[H5R_REF_BUF_SIZE]; /* opaque data */
int64_t align; /* ensures alignment */
} u;
} H5R_ref_t;
/********************/
/* Public Variables */
/********************/
/*********************/
/* Public Prototypes */
/*********************/
#ifdef __cplusplus
extern "C" {
#endif
/* Constructors */
H5_DLL herr_t H5Rcreate_object(hid_t loc_id, const char *name, hid_t oapl_id, H5R_ref_t *ref_ptr);
H5_DLL herr_t H5Rcreate_region(hid_t loc_id, const char *name, hid_t space_id, hid_t oapl_id, H5R_ref_t *ref_ptr);
H5_DLL herr_t H5Rcreate_attr(hid_t loc_id, const char *name, const char *attr_name, hid_t oapl_id, H5R_ref_t *ref_ptr);
H5_DLL herr_t H5Rdestroy(H5R_ref_t *ref_ptr);
/* Info */
H5_DLL H5R_type_t H5Rget_type(const H5R_ref_t *ref_ptr);
H5_DLL htri_t H5Requal(const H5R_ref_t *ref1_ptr, const H5R_ref_t *ref2_ptr);
H5_DLL herr_t H5Rcopy(const H5R_ref_t *src_ref_ptr, H5R_ref_t *dst_ref_ptr);
/* Dereference */
H5_DLL hid_t H5Ropen_object(H5R_ref_t *ref_ptr, hid_t rapl_id, hid_t oapl_id);
H5_DLL hid_t H5Ropen_region(H5R_ref_t *ref_ptr, hid_t rapl_id, hid_t oapl_id);
H5_DLL hid_t H5Ropen_attr(H5R_ref_t *ref_ptr, hid_t rapl_id, hid_t aapl_id);
/* Get type */
H5_DLL herr_t H5Rget_obj_type3(H5R_ref_t *ref_ptr, hid_t rapl_id, H5O_type_t *obj_type);
/* Get name */
H5_DLL ssize_t H5Rget_file_name(const H5R_ref_t *ref_ptr, char *buf, size_t size);
H5_DLL ssize_t H5Rget_obj_name(H5R_ref_t *ref_ptr, hid_t rapl_id, char *buf, size_t size);
H5_DLL ssize_t H5Rget_attr_name(const H5R_ref_t *ref_ptr, char *buf, size_t size);
/* Symbols defined for compatibility with previous versions of the HDF5 API.
*
* Use of these symbols is or will be deprecated.
*/
/* Macros */
/* Versions for compatibility */
#define H5R_OBJECT H5R_OBJECT1
#define H5R_DATASET_REGION H5R_DATASET_REGION1
/* Function prototypes */
#ifndef H5_NO_DEPRECATED_SYMBOLS
H5_DLL H5G_obj_t H5Rget_obj_type1(hid_t id, H5R_type_t ref_type, const void *ref);
H5_DLL hid_t H5Rdereference1(hid_t obj_id, H5R_type_t ref_type, const void *ref);
#endif /* H5_NO_DEPRECATED_SYMBOLS */
H5_DLL herr_t H5Rcreate(void *ref, hid_t loc_id, const char *name, H5R_type_t ref_type, hid_t space_id);
H5_DLL herr_t H5Rget_obj_type2(hid_t id, H5R_type_t ref_type, const void *ref, H5O_type_t *obj_type);
H5_DLL hid_t H5Rdereference2(hid_t obj_id, hid_t oapl_id, H5R_type_t ref_type, const void *ref);
H5_DLL hid_t H5Rget_region(hid_t dataset, H5R_type_t ref_type, const void *ref);
H5_DLL ssize_t H5Rget_name(hid_t loc_id, H5R_type_t ref_type, const void *ref, char *name, size_t size);
#ifdef __cplusplus
}
#endif
#endif /* _H5Rpublic_H */
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