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/*
* Copyright (C) 2000-2001 NCSA
* All rights reserved.
*
* 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
#include "H5Fprivate.h"
/* This is a near top-level header! Try not to include much! */
#include "H5private.h"
/*
* Feature: Define this constant to be non-zero if you want to enable code
* that minimizes the number of calls to lseek(). This has a huge
* performance benefit on some systems. Set this constant to zero
* on the compiler command line to disable that optimization.
*/
#ifndef H5F_OPT_SEEK
# define H5F_OPT_SEEK 1
#endif
/*
* 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
/* Maximum size of boot-block buffer */
#define H5F_BOOTBLOCK_SIZE 1024
/* Define the HDF5 file signature */
#define H5F_SIGNATURE "\211HDF\r\n\032\n"
#define H5F_SIGNATURE_LEN 8
/*
* Private file open flags.
*/
#define H5F_ACC_PUBLIC_FLAGS 0x00ffu
/*
* Macros that check for overflows. These are somewhat dangerous to fiddle
* with.
*/
#if (SIZEOF_SIZE_T >= SIZEOF_OFF_T)
# define H5F_OVERFLOW_SIZET2OFFT(X) \
((size_t)(X)>=(size_t)((size_t)1<<(8*sizeof(off_t)-1)))
#else
# define H5F_OVERFLOW_SIZET2OFFT(X) 0
#endif
/* The raw data chunk cache */
typedef struct H5F_rdcc_t {
unsigned ninits; /* Number of chunk creations */
unsigned nhits; /* Number of cache hits */
unsigned nmisses;/* Number of cache misses */
unsigned nflushes;/* Number of cache flushes */
size_t nbytes; /* Current cached raw data in bytes */
size_t nslots; /* Number of chunk slots allocated */
struct H5F_rdcc_ent_t *head; /* Head of doubly linked list */
struct H5F_rdcc_ent_t *tail; /* Tail of doubly linked list */
int nused; /* Number of chunk slots in use */
struct H5F_rdcc_ent_t **slot; /* Chunk slots, each points to a chunk*/
} H5F_rdcc_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.
*/
typedef struct H5F_file_t {
unsigned flags; /* Access Permissions for file */
H5FD_t *lf; /* Lower level file handle for I/O */
unsigned nrefs; /* Ref count for times file is opened */
uint32_t consist_flags; /* File Consistency Flags */
haddr_t boot_addr; /* Absolute address of boot block */
haddr_t base_addr; /* Absolute base address for rel.addrs. */
haddr_t freespace_addr; /* Relative address of free-space info */
haddr_t driver_addr; /* File driver information block address*/
struct H5AC_t *cache; /* The object cache */
hid_t fcpl_id; /* File creation property list ID */
int mdc_nelmts; /* Size of meta data cache (elements) */
size_t rdcc_nelmts; /* Size of raw data chunk cache (elmts) */
size_t rdcc_nbytes; /* Size of raw data chunk cache (bytes) */
double rdcc_w0; /* Preempt read chunks first? [0.0..1.0]*/
hsize_t threshold; /* Threshold for alignment */
hsize_t alignment; /* Alignment */
unsigned gc_ref; /* Garbage-collect references? */
struct H5G_t *root_grp; /* Open root group */
int ncwfs; /* Num entries on cwfs list */
struct H5HG_heap_t **cwfs; /* Global heap cache */
/* Data Sieve Buffering fields */
unsigned char *sieve_buf; /* Buffer to hold data sieve buffer */
haddr_t sieve_loc; /* File location (offset) of the data sieve buffer */
size_t sieve_size; /* Size of the data sieve buffer used (in bytes) */
size_t sieve_buf_size; /* Size of the data sieve buffer allocated (in bytes) */
unsigned sieve_dirty; /* Flag to indicate that the data sieve buffer is dirty */
H5F_rdcc_t rdcc; /* Raw data chunk cache */
} H5F_file_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 {
struct H5F_t *parent;/* Parent file */
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;
/*
* 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. The reference count (nrefs) indicates the
* number of times the file has been opened (the application can only open a
* file once explicitly, but the library can open the file a second time to
* indicate that the file is mounted on some other file).
*/
struct H5F_t {
unsigned nrefs; /* Reference count */
unsigned intent; /* The flags passed to H5F_open()*/
char *name; /* Name used to open file */
H5F_file_t *shared; /* The shared file info */
unsigned nopen_objs; /* Number of open object headers*/
hid_t closing; /* H5I_FILE_CLOSING ID or zero */
H5F_mtab_t mtab; /* File mount table */
};
#ifdef H5_HAVE_PARALLEL
__DLLVAR__ hbool_t H5_mpi_1_metawrite_g;
#endif /* H5_HAVE_PARALLEL */
/* Private functions, not part of the publicly documented API */
__DLL__ void H5F_encode_length_unusual(const H5F_t *f, uint8_t **p,
uint8_t *l);
__DLL__ H5F_t *H5F_open(const char *name, unsigned flags, hid_t fcpl_id,
hid_t fapl_id);
__DLL__ herr_t H5F_close(H5F_t *f);
__DLL__ herr_t H5F_close_all(void);
__DLL__ herr_t H5F_flush_all(hbool_t invalidate);
__DLL__ herr_t H5F_debug(H5F_t *f, haddr_t addr, FILE * stream,
int indent, int fwidth);
__DLL__ herr_t H5F_istore_debug(H5F_t *f, haddr_t addr, FILE * stream,
int indent, int fwidth, int ndims);
__DLL__ herr_t H5F_mountpoint(struct H5G_entry_t *find/*in,out*/);
/* Functions that operate on indexed storage */
__DLL__ herr_t H5F_istore_init (H5F_t *f);
__DLL__ herr_t H5F_istore_flush (H5F_t *f, hbool_t preempt);
__DLL__ herr_t H5F_istore_dest (H5F_t *f);
__DLL__ herr_t H5F_istore_stats (H5F_t *f, hbool_t headers);
__DLL__ herr_t H5F_istore_create(H5F_t *f,
struct H5O_layout_t *layout/*in,out*/);
__DLL__ herr_t H5F_istore_read(H5F_t *f, hid_t dxpl_id,
const struct H5O_layout_t *layout,
const struct H5O_pline_t *pline,
const struct H5O_fill_t *fill,
const hssize_t offset[], const hsize_t size[],
void *buf/*out*/);
__DLL__ herr_t H5F_istore_write(H5F_t *f, hid_t dxpl_id,
const struct H5O_layout_t *layout,
const struct H5O_pline_t *pline,
const struct H5O_fill_t *fill,
const hssize_t offset[], const hsize_t size[],
const void *buf);
__DLL__ herr_t H5F_istore_allocate (H5F_t *f, hid_t dxpl_id,
const struct H5O_layout_t *layout,
const hsize_t *space_dim,
const struct H5O_pline_t *pline,
const struct H5O_fill_t *fill);
/* Functions that operate on contiguous storage wrt boot block */
__DLL__ herr_t H5F_contig_read(H5F_t *f, hsize_t max_data, H5FD_mem_t type, haddr_t addr,
size_t size, hid_t dxpl_id, void *_buf/*out*/);
__DLL__ herr_t H5F_contig_write(H5F_t *f, hsize_t max_data, H5FD_mem_t type, haddr_t addr,
size_t size, hid_t dxpl_id, const void *buf);
/* Functions that operate on contiguous storage wrt boot block */
__DLL__ herr_t H5F_contig_readv(H5F_t *f, hsize_t max_data, H5FD_mem_t type, haddr_t addr,
size_t nseq, size_t size[], hsize_t offset[], hid_t dxpl_id, void *_buf/*out*/);
__DLL__ herr_t H5F_contig_writev(H5F_t *f, hsize_t max_data, H5FD_mem_t type, haddr_t addr,
size_t nseq, size_t size[], hsize_t offset[], hid_t dxpl_id, const void *buf);
#endif
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