/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 "H5Aprivate.h" /* Attributes */ #include "H5ACprivate.h" /* Metadata cache */ /* Object header macros */ #define H5O_NMESGS 8 /*initial number of messages */ #define H5O_NCHUNKS 2 /*initial number of chunks */ #define H5O_MIN_SIZE 32 /*min obj header data size */ #define H5O_MSG_TYPES 20 /* # of types of messages */ #define H5O_MAX_CRT_ORDER_IDX 65535 /* Max. creation order index value */ /* 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(O) \ (((O)->version == H5O_VERSION_1) \ ? \ H5O_ALIGN_OLD(1 + /*version number */ \ 1 + /*reserved */ \ 2 + /*number of messages */ \ 4 + /*reference count */ \ 4) /*chunk data size */ \ : \ (H5O_SIZEOF_MAGIC + /*magic number */ \ 1 + /*version number */ \ 1 + /*flags */ \ 2 + /*number of messages */ \ 4 + /*reference count */ \ 4 + /*access time */ \ 4 + /*modification time */ \ 4 + /*change time */ \ 4 + /*birth time */ \ 2 + /*max compact attributes */ \ 2 + /*min dense attributes */ \ (O)->sizeof_size + /*# of attributes */ \ (O)->sizeof_addr + /*addr of attribute heap */ \ (O)->sizeof_addr + /*addr of attribute name index */ \ (O)->sizeof_addr + /*addr of attribute creation order index */ \ 2 + /*max attr. creation index */ \ 4 + /*chunk data size */ \ H5O_SIZEOF_CHKSUM) /*checksum size */ \ ) /* * 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 */ \ : \ (1 + /*message type */ \ 2 + /*sizeof message data */ \ 1 + /*flags */ \ 2) /*creation index */ \ ) #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) /* Load native information for a message, if it's not already present */ /* (Only works for messages with decode callback) */ #define H5O_LOAD_NATIVE(F, DXPL, MSG, ERR) \ if(NULL == (MSG)->native) { \ const H5O_msg_class_t *msg_type = (MSG)->type; \ \ /* Decode the message */ \ HDassert(msg_type->decode); \ if(NULL == ((MSG)->native = (msg_type->decode)((F), (DXPL), (MSG)->flags, (MSG)->raw))) \ HGOTO_ERROR(H5E_OHDR, H5E_CANTDECODE, ERR, "unable to decode message") \ \ /* Set the message's "creation index", if it has one */ \ if(msg_type->set_crt_index) { \ /* Set the creation index for the message */ \ if((msg_type->set_crt_index)((MSG)->native, (MSG)->crt_idx) < 0) \ HGOTO_ERROR(H5E_OHDR, H5E_CANTSET, ERR, "unable to set creation index") \ } /* end if */ \ } /* end if */ /* The "message class" type */ 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 */ hbool_t is_sharable; /*are messages of this class sharable? */ void *(*decode)(H5F_t*, hid_t, unsigned, const uint8_t *); herr_t (*encode)(H5F_t*, hbool_t, uint8_t*, const void *); void *(*copy)(const void *, void *); /*copy native value */ size_t (*raw_size)(const H5F_t *, hbool_t, const void *);/*sizeof encoded message */ 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 *); /* 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 (*set_share)(void*, const H5O_shared_t*); /* Set shared information */ htri_t (*can_share)(const void *); /* Is message allowed to be shared? */ herr_t (*pre_copy_file)(H5F_t *, const void *, hbool_t *, const H5O_copy_t *, void *); /*"pre copy" action when copying native value to file */ void *(*copy_file)(H5F_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 (*get_crt_index)(const void *, H5O_msg_crt_idx_t *); /* Get message's creation index */ herr_t (*set_crt_index)(void *, H5O_msg_crt_idx_t); /* Set message's creation index */ 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 */ H5O_msg_crt_idx_t crt_idx; /*message creation index */ 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 */ /* General information (not stored) */ size_t sizeof_size; /* Size of file sizes */ size_t sizeof_addr; /* Size of file addresses */ /* Object information (stored) */ unsigned version; /*version number */ unsigned nlink; /*link count */ unsigned flags; /*flags */ /* Time information (stored, for versions > 1) */ time_t atime; /*access time */ time_t mtime; /*modification time */ time_t ctime; /*change time */ time_t btime; /*birth time */ /* Attribute information (stored, for versions > 1) */ unsigned max_compact; /* Maximum # of compact attributes */ unsigned min_dense; /* Minimum # of "dense" attributes */ hsize_t nattrs; /* Number of attributes in the group */ haddr_t attr_fheap_addr; /* Address of fractal heap for storing "dense" attributes */ haddr_t name_bt2_addr; /* Address of v2 B-tree for indexing names of attributes */ haddr_t corder_bt2_addr; /* Address of v2 B-tree for indexing creation order of attributes */ H5O_msg_crt_idx_t max_attr_crt_idx; /* Maximum attribute creation index used */ /* Message management (stored, encoded in chunks) */ size_t nmesgs; /*number of messages */ size_t alloc_nmesgs; /*number of message slots */ H5O_mesg_t *mesg; /*array of messages */ size_t skipped_mesg_size; /*size of skipped messages (for sanity checking) */ /* Chunk management (not stored) */ 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 { struct H5S_extent_t *src_space_extent; /* Copy of dataspace extent for dataset */ 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 { H5O_type_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; /* Typedef for "internal library" iteration operations */ typedef herr_t (*H5O_lib_operator_t)(H5O_t *oh, H5O_mesg_t *mesg/*in,out*/, unsigned sequence, unsigned *oh_flags_ptr/*out*/, void *operator_data/*in,out*/); /* Some syntactic sugar to make the compiler happy with two different kinds of iterator callbacks */ typedef union { H5O_operator_t app_op; /* Application callback for each message */ H5O_lib_operator_t lib_op; /* Library internal callback for each message */ } H5O_mesg_operator_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[H5O_MSG_TYPES]; /* 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]; /* Shared Message information message (0x000a) * A message for the superblock extension, holding information about * the file-wide shared message "SOHM" table */ H5_DLLVAR const H5O_msg_class_t H5O_MSG_SHMESG[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 herr_t H5O_delete_mesg(H5F_t *f, hid_t dxpl_id, H5O_mesg_t *mesg); H5_DLL const H5O_obj_class_t *H5O_obj_class_real(H5O_t *oh); /* Object header message routines */ H5_DLL unsigned H5O_msg_alloc(H5F_t *f, hid_t dxpl_id, H5O_t *oh, const H5O_msg_class_t *type, unsigned *mesg_flags, void *mesg, unsigned *oh_flags_ptr); H5_DLL herr_t H5O_msg_append_real(H5F_t *f, hid_t dxpl_id, H5O_t *oh, const H5O_msg_class_t *type, unsigned mesg_flags, unsigned update_flags, void *mesg, unsigned *oh_flags_ptr); H5_DLL void *H5O_msg_read_real(H5F_t *f, hid_t dxpl_id, H5O_t *oh, unsigned type_id, void *mesg); H5_DLL void *H5O_msg_free_real(const H5O_msg_class_t *type, void *mesg); H5_DLL herr_t H5O_msg_free_mesg(H5O_mesg_t *mesg); H5_DLL unsigned H5O_msg_count_real(const H5O_t *oh, const H5O_msg_class_t *type); H5_DLL htri_t H5O_msg_exists_oh(const H5O_t *oh, unsigned type_id); H5_DLL void *H5O_msg_copy_file(const H5O_msg_class_t *type, H5F_t *file_src, void *mesg_src, H5F_t *file_dst, hid_t dxpl_id, hbool_t *shared, H5O_copy_t *cpy_info, void *udata); H5_DLL herr_t H5O_msg_iterate_real(H5F_t *f, H5O_t *oh, const H5O_msg_class_t *type, hbool_t internal, H5O_mesg_operator_t op, void *op_data, hid_t dxpl_id, unsigned *oh_flags_ptr); /* Object header allocation routines */ H5_DLL unsigned H5O_alloc(H5F_t *f, hid_t dxpl_id, H5O_t *oh, const H5O_msg_class_t *type, const void *mesg, hbool_t *oh_dirtied_ptr); H5_DLL herr_t H5O_condense_header(H5F_t *f, H5O_t *oh, hid_t dxpl_id); H5_DLL herr_t H5O_release_mesg(H5F_t *f, hid_t dxpl_id, H5O_t *oh, H5O_mesg_t *mesg, hbool_t adj_link); /* Shared object operators */ H5_DLL void * H5O_shared_decode(H5F_t *f, hid_t dxpl_id, const uint8_t *buf, const H5O_msg_class_t *type); H5_DLL herr_t H5O_shared_encode(const H5F_t *f, uint8_t *buf/*out*/, const H5O_shared_t *sh_mesg); H5_DLL size_t H5O_shared_size(const H5F_t *f, const H5O_shared_t *sh_mesg); H5_DLL herr_t H5O_shared_delete(H5F_t *f, hid_t dxpl_id, const H5O_shared_t *sh_mesg, const H5O_msg_class_t *mesg_type); H5_DLL herr_t H5O_shared_link(H5F_t *f, hid_t dxpl_id, const H5O_shared_t *sh_mesg, const H5O_msg_class_t *mesg_type); H5_DLL herr_t H5O_shared_copy_file(H5F_t *file_src, H5F_t *file_dst, hid_t dxpl_id, const H5O_msg_class_t *mesg_type, const void *_native_src, void *_native_dst, H5O_copy_t *cpy_info, void *udata); H5_DLL herr_t H5O_shared_debug(const H5O_shared_t *mesg, FILE *stream, int indent, int fwidth); /* Attribute operations */ H5_DLL herr_t H5O_attr_create(const H5O_loc_t *loc, hid_t dxpl_id, H5A_t *attr); H5_DLL H5A_t *H5O_attr_open_by_name(const H5O_loc_t *loc, const char *name, hid_t dxpl_id); H5_DLL H5A_t *H5O_attr_open_by_idx(const H5O_loc_t *loc, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t dxpl_id); H5_DLL herr_t H5O_attr_write(const H5O_loc_t *loc, hid_t dxpl_id, H5A_t *attr); H5_DLL herr_t H5O_attr_rename(const H5O_loc_t *loc, hid_t dxpl_id, const char *old_name, const char *new_name); H5_DLL herr_t H5O_attr_iterate(hid_t loc_id, const H5O_loc_t *loc, hid_t dxpl_id, H5_iter_order_t order, unsigned skip, unsigned *last_attr, const H5A_attr_iter_op_t *op, void *op_data); H5_DLL herr_t H5O_attr_remove(const H5O_loc_t *loc, const char *name, hid_t dxpl_id); H5_DLL int H5O_attr_count(const H5O_loc_t *loc, hid_t dxpl_id); H5_DLL htri_t H5O_attr_exists(const H5O_loc_t *loc, const char *name, hid_t dxpl_id); /* These functions operate on object locations */ H5_DLL H5O_loc_t *H5O_get_loc(hid_t id); /* Useful metadata cache callbacks */ H5_DLL herr_t H5O_dest(H5F_t *f, H5O_t *oh); /* Testing functions */ #ifdef H5O_TESTING H5_DLL htri_t H5O_is_attr_empty_test(hid_t oid); H5_DLL htri_t H5O_is_attr_dense_test(hid_t oid); H5_DLL herr_t H5O_num_attrs_test(hid_t oid, hsize_t *nattrs); H5_DLL herr_t H5O_attr_dense_info_test(hid_t oid, hsize_t *name_count, hsize_t *corder_count); #endif /* H5O_TESTING */ /* Object header debugging routines */ #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); #endif /* _H5Opkg_H */