/*------------------------------------------------------------------------- * Copyright (C) 1997 National Center for Supercomputing Applications. * All rights reserved. * *------------------------------------------------------------------------- * * Created: H5Oprivate.h * Aug 5 1997 * Robb Matzke * * Purpose: Object header private include file. * * Modifications: * *------------------------------------------------------------------------- */ #ifndef _H5Oprivate_H #define _H5Oprivate_H #include /* Private headers needed by this file */ #include #include #include #include #include #include /* * 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)) #define H5O_MIN_SIZE H5O_ALIGN(32) /*min obj header data size */ #define H5O_NMESGS 32 /*initial number of messages */ #define H5O_NCHUNKS 8 /*initial number of chunks */ #define H5O_NEW_MESG (-1) /*new message */ #define H5O_ALL (-1) /*delete all messages of type */ /* Flags which are part of a message */ #define H5O_FLAG_CONSTANT 0x01 #define H5O_FLAG_SHARED 0x02 #define H5O_FLAG_BITS 0x03 #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 { intn id; /*message type ID on disk */ const char *name; /*for debugging */ size_t native_size; /*size of native message */ void *(*decode)(H5F_t*, const uint8*, H5HG_t*); herr_t (*encode)(H5F_t*, uint8*, const void*); void *(*copy)(const void*, void*); /*copy native value */ size_t (*raw_size)(H5F_t*, const void*);/*sizeof raw val */ herr_t (*reset)(void *); /*free nested data structs */ herr_t (*share)(H5F_t*, const void*, H5HG_t*); herr_t (*debug)(H5F_t*, const void*, FILE*, intn, intn); } H5O_class_t; typedef struct H5O_mesg_t { const H5O_class_t *type; /*type of message */ hbool_t dirty; /*raw out of date wrt native */ uint8 flags; /*message flags */ void *native; /*native format message */ uint8 *raw; /*ptr to raw data */ size_t raw_size; /*size with alignment */ intn chunkno; /*chunk number for this mesg */ } 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 *image; /*image of file */ } H5O_chunk_t; typedef struct H5O_t { hbool_t dirty; /*out of data wrt disk */ intn version; /*version number */ intn nlink; /*link count */ intn nmesgs; /*number of messages */ intn alloc_nmesgs; /*number of message slots */ H5O_mesg_t *mesg; /*array of messages */ intn nchunks; /*number of chunks */ intn alloc_nchunks; /*chunks allocated */ H5O_chunk_t *chunk; /*array of chunks */ } H5O_t; /* * Null Message. */ #define H5O_NULL_ID 0x0000 extern const H5O_class_t H5O_NULL[1]; /* * Simple Data Space Message. */ #define H5O_SDSPACE_ID 0x0001 extern const H5O_class_t H5O_SDSPACE[1]; /* operates on an H5S_simple_t struct */ /* * Data Type Message. */ #define H5O_DTYPE_ID 0x0003 extern const H5O_class_t H5O_DTYPE[1]; /* operates on an H5T_t struct */ /* * External File List Message */ #define H5O_EFL_ID 0x0007 /*external file list id */ #define H5O_EFL_ALLOC 16 /*number of slots to alloc at once */ #define H5O_EFL_UNLIMITED H5F_UNLIMITED /*max possible file size */ extern const H5O_class_t H5O_EFL[1]; /*external file list class */ typedef struct H5O_efl_entry_t { size_t name_offset; /*offset of name within heap */ char *name; /*malloc'd name */ size_t offset; /*offset of data within file */ size_t size; /*size allocated within file */ } H5O_efl_entry_t; typedef struct H5O_efl_t { haddr_t heap_addr; /*address of name heap */ uintn nalloc; /*number of slots allocated */ uintn nused; /*number of slots used */ H5O_efl_entry_t *slot; /*array of external file entries */ } H5O_efl_t; /* * Data Layout Message */ #define H5O_LAYOUT_ID 0x0008 #define H5O_LAYOUT_NDIMS 32 extern const H5O_class_t H5O_LAYOUT[1]; typedef struct H5O_layout_t { int type; /*type of layout, H5D_layout_t */ haddr_t addr; /*file address of data or B-tree */ uintn ndims; /*num dimensions in stored data */ size_t dim[H5O_LAYOUT_NDIMS]; /*size of data or chunk */ } H5O_layout_t; /* * Object name message. */ #define H5O_NAME_ID 0x000d extern const H5O_class_t H5O_NAME[1]; typedef struct H5O_name_t { char *s; /*ptr to malloc'd memory */ } H5O_name_t; /* * Shared object message. 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. */ #define H5O_SHARED_ID 0x000f extern const H5O_class_t H5O_SHARED[1]; typedef H5HG_t H5O_shared_t; /* * Object header continuation message. */ #define H5O_CONT_ID 0x0010 extern const H5O_class_t H5O_CONT[1]; typedef struct H5O_cont_t { haddr_t addr; /*address of continuation block */ size_t size; /*size of continuation block */ /* the following field(s) do not appear on disk */ intn chunkno; /*chunk this mesg refers to */ } H5O_cont_t; /* * Symbol table message. */ #define H5O_STAB_ID 0x0011 extern const H5O_class_t H5O_STAB[1]; void *H5O_stab_fast (const H5G_cache_t *cache, const H5O_class_t *type, void *_mesg); typedef struct H5O_stab_t { haddr_t btree_addr; /*address of B-tree */ haddr_t heap_addr; /*address of name heap */ } H5O_stab_t; /* General message operators */ herr_t H5O_create (H5F_t *f, size_t size_hint, H5G_entry_t *ent/*out*/); herr_t H5O_open (H5G_entry_t *ent); herr_t H5O_close (H5G_entry_t *ent); intn H5O_link (H5G_entry_t *ent, intn adjust); void *H5O_read (H5G_entry_t *ent, const H5O_class_t *type, intn sequence, void *mesg); intn H5O_modify (H5G_entry_t *ent, const H5O_class_t *type, intn overwrite, uintn flags, const void *mesg); herr_t H5O_remove (H5G_entry_t *ent, const H5O_class_t *type, intn sequence); herr_t H5O_reset (const H5O_class_t *type, void *native); herr_t H5O_share (H5F_t *f, const H5O_class_t *type, const void *mesg, H5HG_t *hobj/*out*/); herr_t H5O_debug (H5F_t *f, const haddr_t *addr, FILE * stream, intn indent, intn fwidth); /* EFL operators */ size_t H5O_efl_total_size (H5O_efl_t *efl); herr_t H5O_efl_read (H5F_t *f, const H5O_efl_t *efl, haddr_t *addr, size_t size, uint8 *buf); herr_t H5O_efl_write (H5F_t *f, const H5O_efl_t *efl, haddr_t *addr, size_t size, const uint8 *buf); #endif