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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
* Thursday, March 10, 2005
*
* Purpose: This file contains declarations which are visible only within
* the H5BT package. Source files outside the H5BT package should
* include H5BTprivate.h instead.
*/
#ifndef H5BT_PACKAGE
#error "Do not include this file outside the H5BT package!"
#endif
#ifndef _H5BTpkg_H
#define _H5BTpkg_H
/* Get package's private header */
#include "H5BTprivate.h" /* Block tracker */
/* Other private headers needed by this file */
#include "H5ACprivate.h" /* Metadata cache */
#include "H5B2private.h" /* v2 B-trees */
#include "H5FLprivate.h" /* Free Lists */
/**************************/
/* Package Private Macros */
/**************************/
/* Size of signature information (on disk) */
#define H5BT_SIZEOF_MAGIC 4
/* Block Tracker signature */
#define H5BT_MAGIC "BLTR"
/* Size of the Block Tracker info on disk */
#define H5BT_SIZE(f) ( \
4 + /* Signature */ \
1 + /* Version */ \
1 + /* Status flags */ \
H5F_SIZEOF_SIZE(f) + /* Max. size block tracked (can be 0 for "unknown") */ \
4 + /* Reference count of max. size block tracked */ \
H5F_SIZEOF_SIZE(f) + /* Min. size block tracked (can be 0 for "unknown") */ \
4 + /* Reference count of min. size block tracked */ \
H5F_SIZEOF_SIZE(f) + /* Total number of bytes tracked */ \
H5F_SIZEOF_ADDR(f)) /* Address of v2 B-tree which holds block inf */
/* Bit flags for block tracker size status */
#define H5BT_STATUS_MAX_VALID 0x01 /* Maximum block size valid over all blocks tracked */
/* If this flag is not set, then only part of the blocks have been */
/* searched to determine the current maximum block size. This can happen */
/* during block shrinks or removals */
#define H5BT_STATUS_MIN_VALID 0x02 /* Minimum block size valid over all blocks tracked */
/* If this flag is not set, then only part of the blocks have been */
/* searched to determine the current minimum block size. This can happen */
/* during block expansions or removals */
/****************************/
/* Package Private Typedefs */
/****************************/
/* The block tracker information */
typedef struct H5BT_t {
/* Information for H5AC cache functions, _must_ be first field in structure */
H5AC_info_t cache_info;
/* Internal block tracking information */
unsigned char status; /* Status flags for max & min values */
hsize_t max_block_size; /* Maximum size of a block tracked */
uint32_t max_block_cnt; /* Count of max. block tracked */
hsize_t min_block_size; /* Minimum size of a block tracked */
uint32_t min_block_cnt; /* Count of min. block tracked */
hsize_t tot_block_size; /* Total size of all blocks tracked */
haddr_t bt2_addr; /* Address of v2 B-tree that holds block info */
} H5BT_t;
/* Info for a single block */
typedef struct H5BT_blk_info_t {
haddr_t addr; /* Address (offset) of block in file */
hsize_t len; /* Length of block in file */
} H5BT_blk_info_t;
/*****************************/
/* Package Private Variables */
/*****************************/
/* H5BT inherits cache-like properties from H5AC */
H5_DLLVAR const H5AC_class_t H5AC_BLTR[1];
/* v2 B-tree class for block info records */
H5_DLLVAR const H5B2_class_t H5B2_BLKTRK[1];
/* Declare a free list to manage the H5BT_t struct */
H5FL_EXTERN(H5BT_t);
/******************************/
/* Package Private Prototypes */
/******************************/
H5_DLL herr_t H5BT_cache_dest(H5F_t *f, H5BT_t *b);
H5_DLL herr_t H5BT_hdr_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr, FILE *stream,
int indent, int fwidth);
#ifdef H5BT_TESTING
H5_DLL herr_t H5BT_get_max_info(H5F_t *f, hid_t dxpl_id, haddr_t addr,
hsize_t *size, uint32_t *count, hbool_t *valid);
H5_DLL herr_t H5BT_get_min_info(H5F_t *f, hid_t dxpl_id, haddr_t addr,
hsize_t *size, uint32_t *count, hbool_t *valid);
#endif /* H5B2_TESTING */
#endif /* _H5BTpkg_H */
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