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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
* Thursday, September 28, 2000
*
* Purpose: This file contains declarations which are visible only within
* the H5F package. Source files outside the H5F package should
* include H5Fprivate.h instead.
*/
#ifndef H5F_PACKAGE
#error "Do not include this file outside the H5F package!"
#endif
#ifndef _H5Fpkg_H
#define _H5Fpkg_H
/* Get package's private header */
#include "H5Fprivate.h"
/* Other public headers needed by this file */
#include "H5Bpublic.h" /* B-tree header, for H5B_NUM_BTREE_ID */
/* Other private headers needed by this file */
#include "H5private.h" /* Generic Functions */
#include "H5ACprivate.h" /* Metadata cache */
#include "H5FLprivate.h" /* Free Lists */
#include "H5FOprivate.h" /* File objects */
#include "H5FSprivate.h" /* File free space */
#include "H5Gprivate.h" /* Groups */
#include "H5Oprivate.h" /* Object header messages */
#include "H5RCprivate.h" /* Reference counted object functions */
/*
* Feature: Define this constant on the compiler command-line if you want to
* see some debugging messages on the debug stream.
*/
#ifdef NDEBUG
# undef H5F_DEBUG
#endif
/* Define the HDF5 file signature */
#define H5F_SIGNATURE "\211HDF\r\n\032\n"
#define H5F_SIGNATURE_LEN 8
/* Superblock status flags */
#define H5F_SUPER_WRITE_ACCESS 0x01
#define H5F_SUPER_FILE_OK 0x02
#define H5F_SUPER_ALL_FLAGS (H5F_SUPER_WRITE_ACCESS | H5F_SUPER_FILE_OK)
/* Mask for removing private file access flags */
#define H5F_ACC_PUBLIC_FLAGS 0x007fu
/* Free space section+aggregator merge flags */
#define H5F_FS_MERGE_METADATA 0x01 /* Section can merge with metadata aggregator */
#define H5F_FS_MERGE_RAWDATA 0x02 /* Section can merge with small 'raw' data aggregator */
/* Macro to abstract checking whether file is using a free space manager */
#define H5F_HAVE_FREE_SPACE_MANAGER(F) \
((F)->shared->fs_strategy == H5F_FILE_SPACE_ALL || \
(F)->shared->fs_strategy == H5F_FILE_SPACE_ALL_PERSIST)
/* Macros for encoding/decoding superblock */
#define H5F_MAX_DRVINFOBLOCK_SIZE 1024 /* Maximum size of superblock driver info buffer */
#define H5F_DRVINFOBLOCK_HDR_SIZE 16 /* Size of superblock driver info header */
/* Superblock sizes for various versions */
#define H5F_SIZEOF_CHKSUM 4 /* Checksum size in the file */
/* Fixed-size portion at the beginning of all superblocks */
#define H5F_SUPERBLOCK_FIXED_SIZE ( H5F_SIGNATURE_LEN \
+ 1) /* superblock version */
/* Macros for computing variable-size superblock size */
#define H5F_SUPERBLOCK_VARLEN_SIZE_COMMON \
(2 /* freespace, and root group versions */ \
+ 1 /* reserved */ \
+ 3 /* shared header vers, size of address, size of lengths */ \
+ 1 /* reserved */ \
+ 4 /* group leaf k, group internal k */ \
+ 4) /* consistency flags */
#define H5F_SUPERBLOCK_VARLEN_SIZE_V0(f) \
( H5F_SUPERBLOCK_VARLEN_SIZE_COMMON /* Common variable-length info */ \
+ H5F_SIZEOF_ADDR(f) /* base address */ \
+ H5F_SIZEOF_ADDR(f) /* <unused> */ \
+ H5F_SIZEOF_ADDR(f) /* EOF address */ \
+ H5F_SIZEOF_ADDR(f) /* driver block address */ \
+ H5G_SIZEOF_ENTRY(f)) /* root group ptr */
#define H5F_SUPERBLOCK_VARLEN_SIZE_V1(f) \
( H5F_SUPERBLOCK_VARLEN_SIZE_COMMON /* Common variable-length info */ \
+ 2 /* indexed B-tree internal k */ \
+ 2 /* reserved */ \
+ H5F_SIZEOF_ADDR(f) /* base address */ \
+ H5F_SIZEOF_ADDR(f) /* <unused> */ \
+ H5F_SIZEOF_ADDR(f) /* EOF address */ \
+ H5F_SIZEOF_ADDR(f) /* driver block address */ \
+ H5G_SIZEOF_ENTRY(f)) /* root group ptr */
#define H5F_SUPERBLOCK_VARLEN_SIZE_V2(f) \
( 2 /* size of address, size of lengths */ \
+ 1 /* consistency flags */ \
+ H5F_SIZEOF_ADDR(f) /* base address */ \
+ H5F_SIZEOF_ADDR(f) /* superblock extension address */ \
+ H5F_SIZEOF_ADDR(f) /* EOF address */ \
+ H5F_SIZEOF_ADDR(f) /* root group object header address */ \
+ H5F_SIZEOF_CHKSUM) /* superblock checksum (keep this last) */
#define H5F_SUPERBLOCK_VARLEN_SIZE(v, f) ( \
(v == 0 ? H5F_SUPERBLOCK_VARLEN_SIZE_V0(f) : 0) \
+ (v == 1 ? H5F_SUPERBLOCK_VARLEN_SIZE_V1(f) : 0) \
+ (v == 2 ? H5F_SUPERBLOCK_VARLEN_SIZE_V2(f) : 0))
/* Total size of superblock, depends on superblock version */
#define H5F_SUPERBLOCK_SIZE(v, f) ( H5F_SUPERBLOCK_FIXED_SIZE \
+ H5F_SUPERBLOCK_VARLEN_SIZE(v, f))
/* Forward declaration external file cache struct used below (defined in
* H5Fefc.c) */
typedef struct H5F_efc_t H5F_efc_t;
/* Structure for metadata & "small [raw] data" block aggregation fields */
struct H5F_blk_aggr_t {
unsigned long feature_flag; /* Feature flag type */
hsize_t alloc_size; /* Size for allocating new blocks */
hsize_t tot_size; /* Total amount of bytes aggregated into block */
hsize_t size; /* Current size of block left */
haddr_t addr; /* Location of block left */
};
/* Structure for metadata accumulator fields */
typedef struct H5F_meta_accum_t {
unsigned char *buf; /* Buffer to hold the accumulated metadata */
haddr_t loc; /* File location (offset) of the accumulated metadata */
size_t size; /* Size of the accumulated metadata buffer used (in bytes) */
size_t alloc_size; /* Size of the accumulated metadata buffer allocated (in bytes) */
size_t dirty_off; /* Offset of the dirty region in the accumulator buffer */
size_t dirty_len; /* Length of the dirty region in the accumulator buffer */
hbool_t dirty; /* Flag to indicate that the accumulated metadata is dirty */
} H5F_meta_accum_t;
/* Enum for free space manager state */
typedef enum H5F_fs_state_t {
H5F_FS_STATE_CLOSED, /* Free space manager is closed */
H5F_FS_STATE_OPEN, /* Free space manager has been opened */
H5F_FS_STATE_DELETING /* Free space manager is being deleted */
} H5F_fs_state_t;
/* A record of the mount table */
typedef struct H5F_mount_t {
struct H5G_t *group; /* Mount point group held open */
struct H5F_t *file; /* File mounted at that point */
} H5F_mount_t;
/*
* The mount table describes what files are attached to (mounted on) the file
* to which this table belongs.
*/
typedef struct H5F_mtab_t {
unsigned nmounts;/* Number of children which are mounted */
unsigned nalloc; /* Number of mount slots allocated */
H5F_mount_t *child; /* An array of mount records */
} H5F_mtab_t;
/* Structure specifically to store superblock. This was originally
* maintained entirely within H5F_file_t, but is now extracted
* here because the superblock is now handled by the cache */
typedef struct H5F_super_t {
H5AC_info_t cache_info; /* Cache entry information structure */
unsigned super_vers; /* Superblock version */
uint8_t status_flags; /* File status flags */
unsigned sym_leaf_k; /* Size of leaves in symbol tables */
unsigned btree_k[H5B_NUM_BTREE_ID]; /* B-tree key values for each type */
haddr_t base_addr; /* Absolute base address for rel.addrs. */
/* (superblock for file is at this offset) */
haddr_t ext_addr; /* Relative address of superblock extension */
haddr_t driver_addr; /* File driver information block address */
haddr_t root_addr; /* Root group address */
H5G_entry_t *root_ent; /* Root group symbol table entry */
} H5F_super_t;
/*
* Define the structure to store the file information for HDF5 files. One of
* these structures is allocated per file, not per H5Fopen(). That is, set of
* H5F_t structs can all point to the same H5F_file_t struct. The `nrefs'
* count in this struct indicates the number of H5F_t structs which are
* pointing to this struct.
*/
struct H5F_file_t {
H5FD_t *lf; /* Lower level file handle for I/O */
H5F_super_t *sblock; /* Pointer to (pinned) superblock for file */
unsigned nrefs; /* Ref count for times file is opened */
unsigned flags; /* Access Permissions for file */
H5F_mtab_t mtab; /* File mount table */
H5F_efc_t *efc; /* External file cache */
/* Cached values from FCPL/superblock */
uint8_t sizeof_addr; /* Size of addresses in file */
uint8_t sizeof_size; /* Size of offsets in file */
haddr_t sohm_addr; /* Relative address of shared object header message table */
unsigned sohm_vers; /* Version of shared message table on disk */
unsigned sohm_nindexes; /* Number of shared messages indexes in the table */
unsigned long feature_flags; /* VFL Driver feature Flags */
haddr_t maxaddr; /* Maximum address for file */
H5AC_t *cache; /* The object cache */
H5AC_cache_config_t
mdc_initCacheCfg; /* initial configuration for the */
/* metadata cache. This structure is */
/* fixed at creation time and should */
/* not change thereafter. */
hid_t fcpl_id; /* File creation property list ID */
H5F_close_degree_t fc_degree; /* File close behavior degree */
size_t rdcc_nslots; /* Size of raw data chunk cache (slots) */
size_t rdcc_nbytes; /* Size of raw data chunk cache (bytes) */
double rdcc_w0; /* Preempt read chunks first? [0.0..1.0]*/
size_t sieve_buf_size; /* Size of the data sieve buffer allocated (in bytes) */
hsize_t threshold; /* Threshold for alignment */
hsize_t alignment; /* Alignment */
unsigned gc_ref; /* Garbage-collect references? */
hbool_t latest_format; /* Always use the latest format? */
hbool_t store_msg_crt_idx; /* Store creation index for object header messages? */
unsigned ncwfs; /* Num entries on cwfs list */
struct H5HG_heap_t **cwfs; /* Global heap cache */
struct H5G_t *root_grp; /* Open root group */
H5FO_t *open_objs; /* Open objects in file */
H5RC_t *grp_btree_shared; /* Ref-counted group B-tree node info */
/* File space allocation information */
H5F_file_space_type_t fs_strategy; /* File space handling strategy */
hsize_t fs_threshold; /* Free space section threshold */
hbool_t use_tmp_space; /* Whether temp. file space allocation is allowed */
haddr_t tmp_addr; /* Next address to use for temp. space in the file */
unsigned fs_aggr_merge[H5FD_MEM_NTYPES]; /* Flags for whether free space can merge with aggregator(s) */
H5F_fs_state_t fs_state[H5FD_MEM_NTYPES]; /* State of free space manager for each type */
haddr_t fs_addr[H5FD_MEM_NTYPES]; /* Address of free space manager info for each type */
H5FS_t *fs_man[H5FD_MEM_NTYPES]; /* Free space manager for each file space type */
H5FD_mem_t fs_type_map[H5FD_MEM_NTYPES]; /* Mapping of "real" file space type into tracked type */
H5F_blk_aggr_t meta_aggr; /* Metadata aggregation info */
/* (if aggregating metadata allocations) */
H5F_blk_aggr_t sdata_aggr; /* "Small data" aggregation info */
/* (if aggregating "small data" allocations) */
/* Metadata accumulator information */
H5F_meta_accum_t accum; /* Metadata accumulator info */
};
/*
* This is the top-level file descriptor. One of these structures is
* allocated every time H5Fopen() is called although they may contain pointers
* to shared H5F_file_t structs.
*/
struct H5F_t {
unsigned intent; /* The flags passed to H5F_open()*/
unsigned read_attempts; /* The # of reads to try when reading metadata with checksum */
char *open_name; /* Name used to open file */
char *actual_name; /* Actual name of the file, after resolving symlinks, etc. */
char *extpath; /* Path for searching target external link file */
H5F_file_t *shared; /* The shared file info */
unsigned nopen_objs; /* Number of open object headers*/
H5FO_t *obj_count; /* # of time each object is opened through top file structure */
hid_t file_id; /* ID of this file */
hbool_t closing; /* File is in the process of being closed */
struct H5F_t *parent; /* Parent file that this file is mounted to */
unsigned nmounts; /* Number of children mounted to this file */
};
/*****************************/
/* Package Private Variables */
/*****************************/
/* Declare a free list to manage the H5F_t struct */
H5FL_EXTERN(H5F_t);
/* Declare a free list to manage the H5F_file_t struct */
H5FL_EXTERN(H5F_file_t);
H5_DLLVAR const H5AC_class_t H5AC_SUPERBLOCK[1];
/******************************/
/* Package Private Prototypes */
/******************************/
/* General routines */
H5_DLL herr_t H5F_init(void);
H5_DLL haddr_t H5F_locate_signature(H5FD_t *file, hid_t dxpl_id);
H5_DLL herr_t H5F_flush(H5F_t *f, hid_t dxpl_id, hbool_t closing);
/* File mount related routines */
H5_DLL herr_t H5F_close_mounts(H5F_t *f);
H5_DLL int H5F_term_unmount_cb(void *obj_ptr, hid_t obj_id, void *key);
H5_DLL herr_t H5F_mount_count_ids(H5F_t *f, unsigned *nopen_files, unsigned *nopen_objs);
/* Superblock related routines */
H5_DLL herr_t H5F_super_init(H5F_t *f, hid_t dxpl_id);
H5_DLL herr_t H5F_super_read(H5F_t *f, hid_t dxpl_id);
H5_DLL herr_t H5F_super_size(H5F_t *f, hid_t dxpl_id, hsize_t *super_size, hsize_t *super_ext_size);
H5_DLL herr_t H5F_super_free(H5F_super_t *sblock);
/* Superblock extension related routines */
H5_DLL herr_t H5F_super_ext_open(H5F_t *f, haddr_t ext_addr, H5O_loc_t *ext_ptr);
H5_DLL herr_t H5F_super_ext_write_msg(H5F_t *f, hid_t dxpl_id, void *mesg, unsigned id, hbool_t may_create);
H5_DLL herr_t H5F_super_ext_remove_msg(H5F_t *f, hid_t dxpl_id, unsigned id);
H5_DLL herr_t H5F_super_ext_close(H5F_t *f, H5O_loc_t *ext_ptr, hid_t dxpl_id,
hbool_t was_created);
/* Metadata accumulator routines */
H5_DLL herr_t H5F_accum_read(const H5F_t *f, hid_t dxpl_id, H5FD_mem_t type,
haddr_t addr, size_t size, void *buf);
H5_DLL herr_t H5F_accum_write(const H5F_t *f, hid_t dxpl_id, H5FD_mem_t type,
haddr_t addr, size_t size, const void *buf);
H5_DLL herr_t H5F_accum_free(H5F_t *f, hid_t dxpl_id, H5FD_mem_t type,
haddr_t addr, hsize_t size);
H5_DLL herr_t H5F_accum_flush(const H5F_t *f, hid_t dxpl_id);
H5_DLL herr_t H5F_accum_reset(const H5F_t *f, hid_t dxpl_id, hbool_t flush);
/* Shared file list related routines */
H5_DLL herr_t H5F_sfile_add(H5F_file_t *shared);
H5_DLL H5F_file_t * H5F_sfile_search(H5FD_t *lf);
H5_DLL herr_t H5F_sfile_remove(H5F_file_t *shared);
/* External file cache routines */
H5_DLL H5F_efc_t *H5F_efc_create(unsigned max_nfiles);
H5_DLL unsigned H5F_efc_max_nfiles(H5F_efc_t *efc);
H5_DLL herr_t H5F_efc_release(H5F_efc_t *efc);
H5_DLL herr_t H5F_efc_destroy(H5F_efc_t *efc);
H5_DLL herr_t H5F_efc_try_close(H5F_t *f);
/* Testing functions */
#ifdef H5F_TESTING
H5_DLL herr_t H5F_get_sohm_mesg_count_test(hid_t fid, unsigned type_id,
size_t *mesg_count);
H5_DLL herr_t H5F_check_cached_stab_test(hid_t file_id);
H5_DLL herr_t H5F_get_maxaddr_test(hid_t file_id, haddr_t *maxaddr);
#endif /* H5F_TESTING */
#endif /* _H5Fpkg_H */
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