path: root/src/H5Fpublic.h

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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 COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * This file contains public declarations for the H5F module.
 */
#ifndef _H5Fpublic_H
#define _H5Fpublic_H

/* Public header files needed by this file */
#include "H5public.h"
#include "H5ACpublic.h"
#include "H5Ipublic.h"

/* When this header is included from a private header, don't make calls to H5check() */
#undef H5CHECK
#ifndef _H5private_H
#define H5CHECK          H5check(),
#else   /* _H5private_H */
#define H5CHECK
#endif  /* _H5private_H */

/* When this header is included from a private HDF5 header, don't make calls to H5open() */
#undef H5OPEN
#ifndef _H5private_H
#define H5OPEN        H5open(),
#else   /* _H5private_H */
#define H5OPEN
#endif  /* _H5private_H */

/*
 * These are the bits that can be passed to the `flags' argument of
 * H5Fcreate() and H5Fopen(). Use the bit-wise OR operator (|) to combine
 * them as needed.  As a side effect, they call H5check_version() to make sure
 * that the application is compiled with a version of the hdf5 header files
 * which are compatible with the library to which the application is linked.
 * We're assuming that these constants are used rather early in the hdf5
 * session.
 */
#define H5F_ACC_RDONLY    (H5CHECK H5OPEN 0x0000u)    /*absence of rdwr => rd-only */
#define H5F_ACC_RDWR    (H5CHECK H5OPEN 0x0001u)    /*open for read and write    */
#define H5F_ACC_TRUNC    (H5CHECK H5OPEN 0x0002u)    /*overwrite existing files   */
#define H5F_ACC_EXCL    (H5CHECK H5OPEN 0x0004u)    /*fail if file already exists*/
/* NOTE: 0x0008u was H5F_ACC_DEBUG, now deprecated */
#define H5F_ACC_CREAT    (H5CHECK H5OPEN 0x0010u)    /*create non-existing files  */
#define H5F_ACC_SWMR_WRITE    (H5CHECK 0x0020u) /*indicate that this file is
                                                 * open for writing in a
                                                 * single-writer/multi-reader (SWMR)
                                                 * scenario.  Note that the
                                                 * process(es) opening the file
                                                 * for reading must open the file
                                                 * with RDONLY access, and use
                                                 * the special "SWMR_READ" access
                                                 * flag. */
#define H5F_ACC_SWMR_READ    (H5CHECK 0x0040u) /*indicate that this file is
                                                 * open for reading in a
                                                 * single-writer/multi-reader (SWMR)
                                                 * scenario.  Note that the
                                                 * process(es) opening the file
                                                 * for SWMR reading must also
                                                 * open the file with the RDONLY
                                                 * flag.  */

/* Value passed to H5Pset_elink_acc_flags to cause flags to be taken from the
 * parent file. */
#define H5F_ACC_DEFAULT (H5CHECK H5OPEN 0xffffu)    /*ignore setting on lapl     */

/* Flags for H5Fget_obj_count() & H5Fget_obj_ids() calls */
#define H5F_OBJ_FILE    (0x0001u)       /* File objects */
#define H5F_OBJ_DATASET    (0x0002u)       /* Dataset objects */
#define H5F_OBJ_GROUP    (0x0004u)       /* Group objects */
#define H5F_OBJ_DATATYPE (0x0008u)      /* Named datatype objects */
#define H5F_OBJ_ATTR    (0x0010u)       /* Attribute objects */
#define H5F_OBJ_ALL     (H5F_OBJ_FILE|H5F_OBJ_DATASET|H5F_OBJ_GROUP|H5F_OBJ_DATATYPE|H5F_OBJ_ATTR)
#define H5F_OBJ_LOCAL   (0x0020u)       /* Restrict search to objects opened through current file ID */
                                        /* (as opposed to objects opened through any file ID accessing this file) */

#define H5F_FAMILY_DEFAULT (hsize_t)0

#ifdef H5_HAVE_PARALLEL
/*
 * Use this constant string as the MPI_Info key to set H5Fmpio debug flags.
 * To turn on H5Fmpio debug flags, set the MPI_Info value with this key to
 * have the value of a string consisting of the characters that turn on the
 * desired flags.
 */
#define H5F_MPIO_DEBUG_KEY "H5F_mpio_debug_key"
#endif /* H5_HAVE_PARALLEL */

/* The difference between a single file and a set of mounted files */
typedef enum H5F_scope_t {
    H5F_SCOPE_LOCAL    = 0,    /*specified file handle only        */
    H5F_SCOPE_GLOBAL    = 1     /*entire virtual file            */
} H5F_scope_t;

/* Unlimited file size for H5Pset_external() */
#define H5F_UNLIMITED    ((hsize_t)(-1L))

/* How does file close behave?
 * H5F_CLOSE_DEFAULT - Use the degree pre-defined by underlining VFL
 * H5F_CLOSE_WEAK    - file closes only after all opened objects are closed
 * H5F_CLOSE_SEMI    - if no opened objects, file is close; otherwise, file
            close fails
 * H5F_CLOSE_STRONG  - if there are opened objects, close them first, then
            close file
 */
typedef enum H5F_close_degree_t {
    H5F_CLOSE_DEFAULT   = 0,
    H5F_CLOSE_WEAK      = 1,
    H5F_CLOSE_SEMI      = 2,
    H5F_CLOSE_STRONG    = 3
} H5F_close_degree_t;

/* Current "global" information about file */
typedef struct H5F_info2_t {
    struct {
    unsigned    version;    /* Superblock version # */
    hsize_t        super_size;    /* Superblock size */
    hsize_t        super_ext_size;    /* Superblock extension size */
    } super;
    struct {
    unsigned    version;    /* Version # of file free space management */
    hsize_t        meta_size;    /* Free space manager metadata size */
    hsize_t        tot_space;    /* Amount of free space in the file */
    } free;
    struct {
    unsigned    version;    /* Version # of shared object header info */
    hsize_t        hdr_size;       /* Shared object header message header size */
    H5_ih_info_t    msgs_info;      /* Shared object header message index & heap size */
    } sohm;
} H5F_info2_t;

/*
 * Types of allocation requests. The values larger than H5FD_MEM_DEFAULT
 * should not change other than adding new types to the end. These numbers
 * might appear in files.
 *
 * Note: please change the log VFD flavors array if you change this
 * enumeration.
 */
typedef enum H5F_mem_t {
    H5FD_MEM_NOLIST     = -1,   /* Data should not appear in the free list.
                                 * Must be negative.
                                 */
    H5FD_MEM_DEFAULT    = 0,    /* Value not yet set.  Can also be the
                                 * datatype set in a larger allocation
                                 * that will be suballocated by the library.
                                 * Must be zero.
                                 */
    H5FD_MEM_SUPER      = 1,    /* Superblock data */
    H5FD_MEM_BTREE      = 2,    /* B-tree data */
    H5FD_MEM_DRAW       = 3,    /* Raw data (content of datasets, etc.) */
    H5FD_MEM_GHEAP      = 4,    /* Global heap data */
    H5FD_MEM_LHEAP      = 5,    /* Local heap data */
    H5FD_MEM_OHDR       = 6,    /* Object header data */

    H5FD_MEM_NTYPES             /* Sentinel value - must be last */
} H5F_mem_t;

/* Free space section information */
typedef struct H5F_sect_info_t {
    haddr_t             addr;   /* Address of free space section */
    hsize_t             size;   /* Size of free space section */
} H5F_sect_info_t;

/* Library's format versions */
typedef enum H5F_libver_t {
    H5F_LIBVER_ERROR = -1,
    H5F_LIBVER_EARLIEST = 0,    /* Use the earliest possible format for storing objects */
    H5F_LIBVER_V18 = 1,         /* Use the latest v18 format for storing objects */
    H5F_LIBVER_V110 = 2,        /* Use the latest v110 format for storing objects */
    H5F_LIBVER_V112 = 3,        /* Use the latest v112 format for storing objects */
    H5F_LIBVER_V114 = 4,        /* Use the latest v112 format for storing objects */
    H5F_LIBVER_NBOUNDS
} H5F_libver_t;

#define H5F_LIBVER_LATEST   H5F_LIBVER_V114

/* File space handling strategy */
typedef enum H5F_fspace_strategy_t {
    H5F_FSPACE_STRATEGY_FSM_AGGR = 0,   /* Mechanisms: free-space managers, aggregators, and virtual file drivers */
                                        /* This is the library default when not set */
    H5F_FSPACE_STRATEGY_PAGE = 1,   /* Mechanisms: free-space managers with embedded paged aggregation and virtual file drivers */
    H5F_FSPACE_STRATEGY_AGGR = 2,   /* Mechanisms: aggregators and virtual file drivers */
    H5F_FSPACE_STRATEGY_NONE = 3,   /* Mechanisms: virtual file drivers */
    H5F_FSPACE_STRATEGY_NTYPES      /* must be last */
} H5F_fspace_strategy_t;

/* Deprecated: File space handling strategy for release 1.10.0 */
/* They are mapped to H5F_fspace_strategy_t as defined above from release 1.10.1 onwards */
typedef enum H5F_file_space_type_t {
    H5F_FILE_SPACE_DEFAULT = 0,     /* Default (or current) free space strategy setting */
    H5F_FILE_SPACE_ALL_PERSIST = 1, /* Persistent free space managers, aggregators, virtual file driver */
    H5F_FILE_SPACE_ALL = 2,        /* Non-persistent free space managers, aggregators, virtual file driver */
                    /* This is the library default */
    H5F_FILE_SPACE_AGGR_VFD = 3,    /* Aggregators, Virtual file driver */
    H5F_FILE_SPACE_VFD = 4,        /* Virtual file driver */
    H5F_FILE_SPACE_NTYPES        /* must be last */
} H5F_file_space_type_t;

/* Data structure to report the collection of read retries for metadata items with checksum */
/* Used by public routine H5Fget_metadata_read_retry_info() */
#define H5F_NUM_METADATA_READ_RETRY_TYPES    21
typedef struct H5F_retry_info_t {
    unsigned nbins;
    uint32_t *retries[H5F_NUM_METADATA_READ_RETRY_TYPES];
} H5F_retry_info_t;

/* Callback for H5Pset_object_flush_cb() in a file access property list */
typedef herr_t (*H5F_flush_cb_t)(hid_t object_id, void *udata);

/*********************/
/* Public Prototypes */
/*********************/
#ifdef __cplusplus
extern "C" {
#endif

H5_DLL htri_t H5Fis_accessible(const char *container_name, hid_t fapl_id);
H5_DLL hid_t  H5Fcreate(const char *filename, unsigned flags,
                hid_t create_plist, hid_t access_plist);
H5_DLL hid_t  H5Fopen(const char *filename, unsigned flags,
                hid_t access_plist);
H5_DLL hid_t  H5Freopen(hid_t file_id);
H5_DLL herr_t H5Fflush(hid_t object_id, H5F_scope_t scope);
H5_DLL herr_t H5Fclose(hid_t file_id);
H5_DLL herr_t H5Fdelete(const char *filename, hid_t fapl_id);
H5_DLL hid_t  H5Fget_create_plist(hid_t file_id);
H5_DLL hid_t  H5Fget_access_plist(hid_t file_id);
H5_DLL herr_t H5Fget_intent(hid_t file_id, unsigned *intent);
H5_DLL herr_t H5Fget_fileno(hid_t file_id, unsigned long *fileno);
H5_DLL ssize_t H5Fget_obj_count(hid_t file_id, unsigned types);
H5_DLL ssize_t H5Fget_obj_ids(hid_t file_id, unsigned types, size_t max_objs, hid_t *obj_id_list);
H5_DLL herr_t H5Fget_vfd_handle(hid_t file_id, hid_t fapl, void **file_handle);
H5_DLL herr_t H5Fmount(hid_t loc, const char *name, hid_t child, hid_t plist);
H5_DLL herr_t H5Funmount(hid_t loc, const char *name);
H5_DLL hssize_t H5Fget_freespace(hid_t file_id);
H5_DLL herr_t H5Fget_filesize(hid_t file_id, hsize_t *size);
H5_DLL herr_t H5Fget_eoa(hid_t file_id, haddr_t *eoa);
H5_DLL herr_t H5Fincrement_filesize(hid_t file_id, hsize_t increment);
H5_DLL ssize_t H5Fget_file_image(hid_t file_id, void * buf_ptr, size_t buf_len);
H5_DLL herr_t H5Fget_mdc_config(hid_t file_id,
                H5AC_cache_config_t * config_ptr);
H5_DLL herr_t H5Fset_mdc_config(hid_t file_id,
                H5AC_cache_config_t * config_ptr);
H5_DLL herr_t H5Fget_mdc_hit_rate(hid_t file_id, double * hit_rate_ptr);
H5_DLL herr_t H5Fget_mdc_size(hid_t file_id,
                              size_t * max_size_ptr,
                              size_t * min_clean_size_ptr,
                              size_t * cur_size_ptr,
                              int * cur_num_entries_ptr);
H5_DLL herr_t H5Freset_mdc_hit_rate_stats(hid_t file_id);
H5_DLL ssize_t H5Fget_name(hid_t obj_id, char *name, size_t size);
H5_DLL herr_t H5Fget_info2(hid_t obj_id, H5F_info2_t *finfo);
H5_DLL herr_t H5Fget_metadata_read_retry_info(hid_t file_id, H5F_retry_info_t *info);
H5_DLL herr_t H5Fstart_swmr_write(hid_t file_id);
H5_DLL ssize_t H5Fget_free_sections(hid_t file_id, H5F_mem_t type,
    size_t nsects, H5F_sect_info_t *sect_info/*out*/);
H5_DLL herr_t H5Fclear_elink_file_cache(hid_t file_id);
H5_DLL herr_t H5Fset_libver_bounds(hid_t file_id, H5F_libver_t low, H5F_libver_t high);
H5_DLL herr_t H5Fstart_mdc_logging(hid_t file_id);
H5_DLL herr_t H5Fstop_mdc_logging(hid_t file_id);
H5_DLL herr_t H5Fget_mdc_logging_status(hid_t file_id,
                                        /*OUT*/ hbool_t *is_enabled,
                                        /*OUT*/ hbool_t *is_currently_logging);
H5_DLL herr_t H5Fformat_convert(hid_t fid);
H5_DLL herr_t H5Freset_page_buffering_stats(hid_t file_id);
H5_DLL herr_t H5Fget_page_buffering_stats(hid_t file_id, unsigned accesses[2],
    unsigned hits[2], unsigned misses[2], unsigned evictions[2], unsigned bypasses[2]);
H5_DLL herr_t H5Fget_mdc_image_info(hid_t file_id, haddr_t *image_addr, hsize_t *image_size);
H5_DLL herr_t H5Fget_dset_no_attrs_hint(hid_t file_id, hbool_t *minimize);
H5_DLL herr_t H5Fset_dset_no_attrs_hint(hid_t file_id, hbool_t minimize);

#ifdef H5_HAVE_PARALLEL
H5_DLL herr_t H5Fset_mpi_atomicity(hid_t file_id, hbool_t flag);
H5_DLL herr_t H5Fget_mpi_atomicity(hid_t file_id, hbool_t *flag);
#endif /* H5_HAVE_PARALLEL */

/* Symbols defined for compatibility with previous versions of the HDF5 API.
 *
 * Use of these symbols is deprecated.
 */
#ifndef H5_NO_DEPRECATED_SYMBOLS

/* Macros */
#define H5F_ACC_DEBUG    (H5CHECK H5OPEN 0x0000u)    /*print debug info (deprecated)*/

/* Typedefs */

/* Current "global" information about file */
typedef struct H5F_info1_t {
    hsize_t        super_ext_size;    /* Superblock extension size */
    struct {
    hsize_t        hdr_size;       /* Shared object header message header size */
    H5_ih_info_t    msgs_info;      /* Shared object header message index & heap size */
    } sohm;
} H5F_info1_t;


/* Function prototypes */
H5_DLL herr_t H5Fget_info1(hid_t obj_id, H5F_info1_t *finfo);
H5_DLL herr_t H5Fset_latest_format(hid_t file_id, hbool_t latest_format);
H5_DLL htri_t H5Fis_hdf5(const char *filename);

#endif /* H5_NO_DEPRECATED_SYMBOLS */

#ifdef __cplusplus
}
#endif
#endif /* _H5Fpublic_H */