/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 /* Get package's private header */ #include "H5Oprivate.h" /* Object headers */ /* Other private headers needed by this file */ #include "H5ACprivate.h" /* Metadata cache */ /* Object header macros */ #define H5O_NMESGS 8 /*initial number of messages */ #define H5O_NCHUNKS 2 /*initial number of chunks */ /* Versions of object header structure */ /* Initial version of the object header format */ #define H5O_VERSION_1 1 /* Revised version - leaves out reserved bytes and alignment padding, and adds * magic number as prefix and checksum */ #define H5O_VERSION_2 2 /* The latest version of the format. Look through the 'flush' * and 'size' callback for places to change when updating this. */ #define H5O_VERSION_LATEST H5O_VERSION_2 /* * 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. * * Note: We no longer attempt to do this. - QAK, 10/16/06 */ #define H5O_ALIGN_OLD(X) (8 * (((X) + 7) / 8)) #define H5O_ALIGN_VERS(V, X) \ (((V) == H5O_VERSION_1) ? \ H5O_ALIGN_OLD(X) \ : \ (X) \ ) #define H5O_ALIGN_OH(O, X) \ H5O_ALIGN_VERS((O)->version, X) #define H5O_ALIGN_F(F, X) \ H5O_ALIGN_VERS((H5F_USE_LATEST_FORMAT(F) ? H5O_VERSION_LATEST : H5O_VERSION_1), X) /* Size of signature information (on disk) */ #define H5O_SIZEOF_MAGIC 4 /* Object header signatures */ #define H5O_HDR_MAGIC "OHDR" /* Header */ #define H5O_CHK_MAGIC "OCHK" /* Continuation chunk */ /* Size of checksum (on disk) */ #define H5O_SIZEOF_CHKSUM 4 /* * Size of object header prefix. */ #define H5O_SIZEOF_HDR_VERS(V) \ (((V) == H5O_VERSION_1) ? \ H5O_ALIGN_OLD(1 + /*version number */ \ 1 + /*reserved */ \ 2 + /*number of messages */ \ 4 + /*reference count */ \ 4) /*header data size */ \ : \ (H5O_SIZEOF_MAGIC + /*magic number */ \ 1 + /*version number */ \ 2 + /*number of messages */ \ 4 + /*reference count */ \ 4 + /*header data size */ \ H5O_SIZEOF_CHKSUM) /*checksum size */ \ ) #define H5O_SIZEOF_HDR_OH(O) \ H5O_SIZEOF_HDR_VERS((O)->version) #define H5O_SIZEOF_HDR_F(F) \ H5O_SIZEOF_HDR_VERS(H5F_USE_LATEST_FORMAT(F) ? H5O_VERSION_LATEST : H5O_VERSION_1) /* * Size of object header message prefix */ #define H5O_SIZEOF_MSGHDR_VERS(V) \ (((V) == H5O_VERSION_1) ? \ H5O_ALIGN_OLD(2 + /*message type */ \ 2 + /*sizeof message data */ \ 1 + /*flags */ \ 3) /*reserved */ \ : \ (2 + /*message type */ \ 2 + /*sizeof message data */ \ 1) /*flags */ \ ) #define H5O_SIZEOF_MSGHDR_OH(O) \ H5O_SIZEOF_MSGHDR_VERS((O)->version) #define H5O_SIZEOF_MSGHDR_F(F) \ H5O_SIZEOF_MSGHDR_VERS(H5F_USE_LATEST_FORMAT(F) ? H5O_VERSION_LATEST : H5O_VERSION_1) /* * Size of chunk "header" for each chunk */ #define H5O_SIZEOF_CHKHDR_VERS(V) \ (((V) == H5O_VERSION_1) ? \ 0 + /*no magic # */ \ 0 /*no checksum */ \ : \ H5O_SIZEOF_MAGIC + /*magic # */ \ H5O_SIZEOF_CHKSUM /*checksum */ \ ) #define H5O_SIZEOF_CHKHDR_OH(O) \ H5O_SIZEOF_CHKHDR_VERS((O)->version) /* * Size of checksum for each chunk */ #define H5O_SIZEOF_CHKSUM_VERS(V) \ (((V) == H5O_VERSION_1) ? \ 0 /*no checksum */ \ : \ H5O_SIZEOF_CHKSUM /*checksum */ \ ) #define H5O_SIZEOF_CHKSUM_OH(O) \ H5O_SIZEOF_CHKSUM_VERS((O)->version) 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 */ htri_t (*is_shared)(const void*); /* Is message shared? */ herr_t (*pre_copy_file)(H5F_t *, const H5O_msg_class_t *, void *, hbool_t *, const H5O_copy_t *, void *); /*"pre copy" action when copying native value to file */ void *(*copy_file)(H5F_t *, const H5O_msg_class_t *, void *, H5F_t *, hid_t, H5O_copy_t *, void *); /*copy native value to file */ herr_t (*post_copy_file)(const H5O_loc_t *, const void *, H5O_loc_t *, void *, hid_t, H5O_copy_t *); /*"post copy" action when copying native value to file */ 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 */ size_t gap; /*space at end of chunk too small for null message */ 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 */ }; /* Callback information for copying dataset */ typedef struct { H5T_t *src_dtype; /* Copy of datatype for dataset */ H5O_pline_t *src_pline; /* Copy of filter pipeline for dataet */ } H5D_copy_file_ud_t; /* Class for types of objects in file */ typedef struct H5O_obj_class_t { H5G_obj_t type; /*object type on disk */ const char *name; /*for debugging */ void *(*get_copy_file_udata)(void); /*retrieve user data for 'copy file' operation */ void (*free_copy_file_udata)(void *); /*free user data for 'copy file' operation */ htri_t (*isa)(H5O_t *); /*if a header matches an object class */ hid_t (*open)(H5G_loc_t *, hid_t ); /*open an object of this class */ H5O_loc_t *(*get_oloc)(hid_t ); /*get the object header location for an object */ } H5O_obj_class_t; /* Node in skip list to map addresses from one file to another during object header copy */ typedef struct H5O_addr_map_t { haddr_t src_addr; /* Address of object in source file */ haddr_t dst_addr; /* Address of object in destination file */ hbool_t is_locked; /* Indicate that the destination object is locked currently */ hsize_t inc_ref_count; /* Number of deferred increments to reference count */ } H5O_addr_map_t; /* 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]; /* Header object ID to class mapping */ H5_DLLVAR const H5O_obj_class_t *const H5O_obj_class_g[3]; /* 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]; /* Link Information Message. (0x0002) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_LINFO[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]; /* Link Message. (0x0006) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_LINK[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 */ /* Group Information Message. (0x000a) */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_GINFO[1]; /* 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]; /* * Object header "object" types */ /* Group Object. (H5G_GROUP - 0) */ H5_DLLVAR const H5O_obj_class_t H5O_OBJ_GROUP[1]; /* Dataset Object. (H5G_DATASET - 1) */ H5_DLLVAR const H5O_obj_class_t H5O_OBJ_DATASET[1]; /* Datatype Object. (H5G_TYPE - 2) */ H5_DLLVAR const H5O_obj_class_t H5O_OBJ_DATATYPE[1]; /* Package-local function prototypes */ H5_DLL herr_t H5O_flush_msgs(H5F_t *f, H5O_t *oh); H5_DLL void * H5O_read_real(const H5O_loc_t *loc, const H5O_msg_class_t *type, int sequence, void *mesg, hid_t dxpl_id); H5_DLL herr_t H5O_free_mesg(H5O_mesg_t *mesg); H5_DLL void * H5O_free_real(const H5O_msg_class_t *type, void *mesg); #ifdef H5O_DEBUG H5_DLL herr_t H5O_assert(const H5O_t *oh); #endif /* H5O_DEBUG */ H5_DLL herr_t H5O_debug_real(H5F_t *f, hid_t dxpl_id, H5O_t *oh, haddr_t addr, FILE *stream, int indent, int fwidth); H5_DLL void * H5O_copy_mesg_file(const H5O_msg_class_t *copy_type, const H5O_msg_class_t *mesg_type, H5F_t *file_src, void *mesg_src, H5F_t *file_dst, hid_t dxpl_id, H5O_copy_t *cpy_info, void *udata); /* 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); /* Useful metadata cache callbacks */ H5_DLL herr_t H5O_dest(H5F_t *f, H5O_t *oh); #endif /* _H5Opkg_H */