hdf5/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 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.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * 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 */

/*
 * 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 0x0000u)	/*absence of rdwr => rd-only */
#define H5F_ACC_RDWR	(H5CHECK 0x0001u)	/*open for read and write    */
#define H5F_ACC_TRUNC	(H5CHECK 0x0002u)	/*overwrite existing files   */
#define H5F_ACC_EXCL	(H5CHECK 0x0004u)	/*fail if file already exists*/
#define H5F_ACC_DEBUG	(H5CHECK 0x0008u)	/*print debug info	     */
#define H5F_ACC_CREAT	(H5CHECK 0x0010u)	/*create non-existing files  */

/* Value passed to H5Pset_elink_acc_flags to cause flags to be taken from the
 * parent file. */
#define H5F_ACC_DEFAULT (H5CHECK 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.
 */
typedef enum H5F_mem_t {
    H5FD_MEM_NOLIST	= -1,			/*must be negative*/
    H5FD_MEM_DEFAULT	= 0,			/*must be zero*/
    H5FD_MEM_SUPER      = 1,
    H5FD_MEM_BTREE      = 2,
    H5FD_MEM_DRAW       = 3,
    H5FD_MEM_GHEAP      = 4,
    H5FD_MEM_LHEAP      = 5,
    H5FD_MEM_OHDR       = 6,

    H5FD_MEM_NTYPES				/*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 file format versions */
typedef enum H5F_libver_t {
    H5F_LIBVER_EARLIEST,        /* Use the earliest possible format for storing objects */
    H5F_LIBVER_LATEST           /* Use the latest possible format available for storing objects*/
} H5F_libver_t;

/* File space handling strategy */
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;


#ifdef __cplusplus
extern "C" {
#endif

/* Functions in H5F.c */
H5_DLL htri_t H5Fis_hdf5(const char *filename);
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 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 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_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 ssize_t H5Fget_free_sections(hid_t file_id, H5F_mem_t type,
    size_t nsects, H5F_sect_info_t *sect_info/*out*/);

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

/* Macros */


/* 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);

#endif /* H5_NO_DEPRECATED_SYMBOLS */

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