/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * * access to either file, you may request a copy from help@hdfgroup.org. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ #ifndef H5O_PACKAGE #error "Do not include this file outside the H5O package!" #endif #ifndef _H5Opkg_H #define _H5Opkg_H /* Get package's private header */ #include "H5Oprivate.h" /* Object headers */ /* Other private headers needed by this file */ #include "H5ACprivate.h" /* Metadata cache */ /* * 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 2 /*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 */ struct H5O_msg_class_t { unsigned 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*); 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); }; typedef struct H5O_mesg_t { const H5O_msg_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; struct H5O_t { H5AC_info_t cache_info; /* Information for H5AC cache functions, _must_ be */ /* first field in structure */ unsigned version; /*version number */ int nlink; /*link count */ size_t nmesgs; /*number of messages */ size_t alloc_nmesgs; /*number of message slots */ H5O_mesg_t *mesg; /*array of messages */ size_t nchunks; /*number of chunks */ size_t alloc_nchunks; /*chunks allocated */ H5O_chunk_t *chunk; /*array of chunks */ }; /* H5O inherits cache-like properties from H5AC */ H5_DLLVAR const H5AC_class_t H5AC_OHDR[1]; /* Header message ID to class mapping */ H5_DLLVAR const H5O_msg_class_t *const H5O_msg_class_g[19]; /* Declare external the free list for H5O_t's */ H5FL_EXTERN(H5O_t); /* Declare external the free list for H5O_mesg_t sequences */ H5FL_SEQ_EXTERN(H5O_mesg_t); /* Declare external the free list for H5O_chunk_t sequences */ H5FL_SEQ_EXTERN(H5O_chunk_t); /* Declare external the free list for chunk_image blocks */ H5FL_BLK_EXTERN(chunk_image); /* * Object header messages */ /* Null Message. (0x0000) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_NULL[1]; /* Simple Dataspace Message. (0x0001) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_SDSPACE[1]; /* Datatype Message. (0x0003) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_DTYPE[1]; /* Old Fill Value Message. (0x0004) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_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_msg_class_t H5O_MSG_FILL_NEW[1]; /* External File List Message. (0x0007) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_EFL[1]; /* Data Layout Message. (0x0008) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_LAYOUT[1]; #ifdef H5O_ENABLE_BOGUS /* "Bogus" Message. (0x0009) */ /* * Used for debugging - should never be found in valid HDF5 file. */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_BOGUS[1]; #endif /* H5O_ENABLE_BOGUS */ /* Filter pipeline message. (0x000b) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_PLINE[1]; /* Attribute Message. (0x000c) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_ATTR[1]; /* Object name message. (0x000d) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_NAME[1]; /* Modification Time Message. (0x000e) */ /* * The message is just a `time_t'. * (See also the "new" modification time message) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_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_msg_class_t H5O_MSG_SHARED[1]; /* Object Header Continuation Message. (0x0010) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_CONT[1]; /* Symbol Table Message. (0x0011) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_STAB[1]; /* New Modification Time Message. (0x0012) */ /* * The message is just a `time_t'. */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_MTIME_NEW[1]; /* Package-local function prototypes */ H5_DLL herr_t H5O_init(void); H5_DLL herr_t H5O_free_mesg(H5O_mesg_t *mesg); H5_DLL void * H5O_read_real(const H5G_entry_t *ent, const H5O_msg_class_t *type, int sequence, void *mesg, hid_t dxpl_id); H5_DLL void * H5O_free_real(const H5O_msg_class_t *type, void *mesg); H5_DLL herr_t H5O_alloc_msgs(H5O_t *oh, size_t min_alloc); /* Shared object operators */ H5_DLL void * H5O_shared_read(H5F_t *f, hid_t dxpl_id, H5O_shared_t *shared, const H5O_msg_class_t *type, void *mesg); /* Symbol table operators */ H5_DLL void *H5O_stab_fast(const H5G_cache_t *cache, const struct H5O_msg_class_t *type, void *_mesg); /* Useful metadata cache callbacks */ H5_DLL herr_t H5O_dest(H5F_t *f, H5O_t *oh); #endif /* _H5Opkg_H */