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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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 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 HDF5 document set and *
* is linked from the top-level documents page. It can also be found at *
* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#ifndef H5O_PACKAGE
#error "Do not include this file outside the H5O package!"
#endif
#ifndef _H5Opkg_H
#define _H5Opkg_H
/* Include private header file */
#include "H5Oprivate.h" /* Object header functions */
/*
* Align messages on 8-byte boundaries because we would like to copy the
* object header chunks directly into memory and operate on them there, even
* on 64-bit architectures. This allows us to reduce the number of disk I/O
* requests with a minimum amount of mem-to-mem copies.
*/
#define H5O_ALIGN(X) (8*(((X)+8-1)/8))
/* Object header macros */
#define H5O_NMESGS 32 /*initial number of messages */
#define H5O_NCHUNKS 8 /*initial number of chunks */
/* Version of object header structure */
#define H5O_VERSION 1
/*
* Size of object header header.
*/
#define H5O_SIZEOF_HDR(F) \
H5O_ALIGN(1 + /*version number */ \
1 + /*alignment */ \
2 + /*number of messages */ \
4 + /*reference count */ \
4) /*header data size */
/*
* Size of message header
*/
#define H5O_SIZEOF_MSGHDR(F) \
H5O_ALIGN(2 + /*message type */ \
2 + /*sizeof message data */ \
4) /*reserved */
typedef struct H5O_class_t {
int id; /*message type ID on disk */
const char *name; /*for debugging */
size_t native_size; /*size of native message */
void *(*decode)(H5F_t*, hid_t, const uint8_t*, struct H5O_shared_t*);
herr_t (*encode)(H5F_t*, uint8_t*, const void*);
void *(*copy)(const void*, void*, unsigned); /*copy native value */
size_t (*raw_size)(const H5F_t*, const void*);/*sizeof raw val */
herr_t (*reset)(void *); /*free nested data structs */
herr_t (*free)(void *); /*free main data struct */
herr_t (*del)(H5F_t *, hid_t, const void *, hbool_t); /* Delete space in file referenced by this message */
herr_t (*link)(H5F_t *, hid_t, const void *); /* Increment any links in file reference by this message */
herr_t (*get_share)(H5F_t*, const void*, struct H5O_shared_t*); /* Get shared information */
herr_t (*set_share)(H5F_t*, void*, const struct H5O_shared_t*); /* Set shared information */
herr_t (*debug)(H5F_t*, hid_t, const void*, FILE*, int, int);
} H5O_class_t;
typedef struct H5O_mesg_t {
const H5O_class_t *type; /*type of message */
hbool_t dirty; /*raw out of date wrt native */
uint8_t flags; /*message flags */
unsigned chunkno; /*chunk number for this mesg */
void *native; /*native format message */
uint8_t *raw; /*ptr to raw data */
size_t raw_size; /*size with alignment */
} H5O_mesg_t;
typedef struct H5O_chunk_t {
hbool_t dirty; /*dirty flag */
haddr_t addr; /*chunk file address */
size_t size; /*chunk size */
uint8_t *image; /*image of file */
} H5O_chunk_t;
typedef struct H5O_t {
H5AC_info_t cache_info; /* Information for H5AC cache functions, _must_ be */
/* first field in structure */
int version; /*version number */
int nlink; /*link count */
unsigned nmesgs; /*number of messages */
unsigned alloc_nmesgs; /*number of message slots */
H5O_mesg_t *mesg; /*array of messages */
unsigned nchunks; /*number of chunks */
unsigned alloc_nchunks; /*chunks allocated */
H5O_chunk_t *chunk; /*array of chunks */
} H5O_t;
/*
* Null Message. (0x0000)
*/
H5_DLLVAR const H5O_class_t H5O_NULL[1];
/*
* Simple Dataspace Message. (0x0001)
*/
H5_DLLVAR const H5O_class_t H5O_SDSPACE[1];
/*
* Datatype Message. (0x0003)
*/
H5_DLLVAR const H5O_class_t H5O_DTYPE[1];
/*
* Old Fill Value Message. (0x0004)
*/
H5_DLLVAR const H5O_class_t H5O_FILL[1];
/*
* New Fill Value Message. (0x0005)
*
* The new fill value message is fill value plus
* space allocation time and fill value writing time and whether fill
* value is defined.
*/
H5_DLLVAR const H5O_class_t H5O_FILL_NEW[1];
/*
* External File List Message. (0x0007)
*/
H5_DLLVAR const H5O_class_t H5O_EFL[1];
/*
* Data Layout Message. (0x0008)
*/
H5_DLLVAR const H5O_class_t H5O_LAYOUT[1];
#ifdef H5O_ENABLE_BOGUS
/*
* "Bogus" Message. (0x0009)
*/
H5_DLLVAR const H5O_class_t H5O_BOGUS[1];
#endif /* H5O_ENABLE_BOGUS */
/*
* Filter pipeline message. (0x000b)
*/
H5_DLLVAR const H5O_class_t H5O_PLINE[1];
/*
* Attribute Message. (0x000c)
*/
H5_DLLVAR const H5O_class_t H5O_ATTR[1];
/*
* Object name message. (0x000d)
*/
H5_DLLVAR const H5O_class_t H5O_NAME[1];
/*
* Modification Time Message. (0x000e)
*
* The message is just a `time_t'.
* (See also the "new" modification time message)
*/
H5_DLLVAR const H5O_class_t H5O_MTIME[1];
/*
* Shared Object Message. (0x000f)
*
* This message ID never really appears in an object
* header. Instead, bit 2 of the `Flags' field will be set and the ID field
* will be the ID of the pointed-to message.
*/
H5_DLLVAR const H5O_class_t H5O_SHARED[1];
/*
* Object Header Continuation Message. (0x0010)
*/
H5_DLLVAR const H5O_class_t H5O_CONT[1];
/*
* Symbol Table Message. (0x0011)
*/
H5_DLLVAR const H5O_class_t H5O_STAB[1];
/*
* New Modification Time Message. (0x0012)
*
* The message is just a `time_t'.
*/
H5_DLLVAR const H5O_class_t H5O_MTIME_NEW[1];
/* Package-local function prototypes */
H5_DLL void * H5O_read_real(const H5G_entry_t *ent, const H5O_class_t *type,
int sequence, void *mesg, hid_t dxpl_id);
H5_DLL void * H5O_free_real(const H5O_class_t *type, void *mesg);
/* Shared object operators */
H5_DLL void * H5O_shared_read(H5F_t *f, hid_t dxpl_id, H5O_shared_t *shared,
const H5O_class_t *type, void *mesg);
/* Symbol table operators */
H5_DLL void *H5O_stab_fast(const H5G_cache_t *cache, const struct H5O_class_t *type,
void *_mesg);
#endif /* _H5Opkg_H */
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