H5HFprivate.h

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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 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.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
/*-------------------------------------------------------------------------
 *
 * Created:     H5HFprivate.h
 *          Feb 24 2006
 *          Quincey Koziol <koziol@ncsa.uiuc.edu>
 *
 * Purpose:     Private header for library accessible fractal heap routines.
 *
 *-------------------------------------------------------------------------
 */
 
#ifndef _H5HFprivate_H
#define _H5HFprivate_H
 
/* Private headers needed by this file */
#include "H5Fprivate.h"     /* File access              */
#include "H5Oprivate.h"     /* Object headers           */
 
/**************************/
/* Library Private Macros */
/**************************/
 
/* Limit heap ID length to 4096 + 1, due to # of bits required to store
 *      length of 'tiny' objects (12 bits)
 */
#define H5HF_MAX_ID_LEN         (4096 + 1)
 
 
/****************************/
/* Library Private Typedefs */
/****************************/
 
/* Creation parameters for doubling-tables */
typedef struct H5HF_dtable_cparam_t {
    unsigned    width;          /* Number of columns in the table (must be power of 2) */
    size_t      start_block_size; /* Starting block size for table (must be power of 2) */
    size_t      max_direct_size; /* Maximum size of a direct block (must be power of 2) */
    unsigned    max_index;      /* Maximum ID/offset for table (integer log2 of actual value, ie. the # of bits required) */
    unsigned    start_root_rows;        /* Starting number of rows for root indirect block */
                                /* 0 indicates to create the full indirect block for the root,
                                 * right from the start.  Doesn't have to be power of 2
                                 */
} H5HF_dtable_cparam_t;
 
/* Fractal heap creation parameters */
typedef struct H5HF_create_t {
    H5HF_dtable_cparam_t managed;/* Mapped object doubling-table creation parameters */
    hbool_t checksum_dblocks;   /* Whether the direct blocks should be checksummed */
    uint32_t max_man_size;      /* Max. size of object to manage in doubling table */
                                /* (i.e.  min. size of object to store standalone) */
    uint16_t id_len;            /* Length of IDs to use for heap objects */
                                /* (0 - make ID just large enough to hold length & offset of object in the heap) */
                                /* (1 - make ID just large enough to allow 'huge' objects to be accessed directly) */
                                /* (n - make ID 'n' bytes in size) */
    H5O_pline_t pline;          /* I/O filter pipeline to apply to direct blocks & 'huge' objects */
} H5HF_create_t;
 
/* Fractal heap metadata statistics info */
typedef struct H5HF_stat_t {
    /* 'Managed' object info */
    hsize_t man_size;           /* Size of 'managed' space in heap            */
    hsize_t man_alloc_size;     /* Size of 'managed' space allocated in heap  */
    hsize_t man_iter_off;       /* Offset of "new block" iterator in 'managed' heap space */
    hsize_t man_free_space;     /* Free space within 'managed' heap blocks    */
    hsize_t man_nobjs;          /* Number of 'managed' objects in heap        */
 
    /* 'Huge' object info */
    hsize_t huge_size;          /* Size of 'huge' objects in heap             */
    hsize_t huge_nobjs;         /* Number of 'huge' objects in heap           */
 
    /* 'Tiny' object info */
    hsize_t tiny_size;          /* Size of 'tiny' objects in heap             */
    hsize_t tiny_nobjs;         /* Number of 'tiny' objects in heap           */
} H5HF_stat_t;
 
/* Fractal heap info (forward decl - defined in H5HFpkg.h) */
typedef struct H5HF_t H5HF_t;
 
/* Typedef for 'op' operations */
typedef herr_t (*H5HF_operator_t)(const void *obj/*in*/, size_t obj_len,
        void *op_data/*in,out*/);
 
/*****************************/
/* Library-private Variables */
/*****************************/
 
 
/***************************************/
/* Library-private Function Prototypes */
/***************************************/
 
/* General routines for fractal heap operations */
H5_DLL H5HF_t *H5HF_create(H5F_t *f, const H5HF_create_t *cparam);
H5_DLL H5HF_t *H5HF_open(H5F_t *f, haddr_t fh_addr);
H5_DLL herr_t H5HF_get_id_len(H5HF_t *fh, size_t *id_len_p/*out*/);
H5_DLL herr_t H5HF_get_heap_addr(const H5HF_t *fh, haddr_t *heap_addr/*out*/);
H5_DLL herr_t H5HF_insert(H5HF_t *fh, size_t size, const void *obj, void *id/*out*/);
H5_DLL herr_t H5HF_get_obj_len(H5HF_t *fh, const void *id, size_t *obj_len_p/*out*/);
H5_DLL herr_t H5HF_get_obj_off(H5HF_t *fh, const void *_id, hsize_t *obj_off_p/*out*/);
H5_DLL herr_t H5HF_read(H5HF_t *fh, const void *id, void *obj/*out*/);
H5_DLL herr_t H5HF_write(H5HF_t *fh, void *id, hbool_t *id_changed,
    const void *obj);
H5_DLL herr_t H5HF_op(H5HF_t *fh, const void *id, H5HF_operator_t op, void *op_data);
H5_DLL herr_t H5HF_remove(H5HF_t *fh, const void *id);
H5_DLL herr_t H5HF_close(H5HF_t *fh);
H5_DLL herr_t H5HF_delete(H5F_t *f, haddr_t fh_addr);
 
/* Statistics routines */
H5_DLL herr_t H5HF_stat_info(const H5HF_t *fh, H5HF_stat_t *stats);
H5_DLL herr_t H5HF_size(const H5HF_t *fh, hsize_t *heap_size/*out*/);
 
/* Debugging routines */
H5_DLL herr_t H5HF_id_print(H5HF_t *fh, const void *id, FILE *stream, int indent, int fwidth);
#ifdef H5HF_DEBUGGING
H5_DLL herr_t H5HF_sects_debug(H5F_t *f, haddr_t addr, FILE *stream, int indent, int fwidth);
#endif /* H5HF_DEBUGGING */
 
#endif /* _H5HFprivate_H */