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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>
* Tuesday, May 2, 2006
*
* Purpose: This file contains declarations which are visible only within
* the H5FS package. Source files outside the H5FS package should
* include H5FSprivate.h instead.
*/
#ifndef H5FS_PACKAGE
#error "Do not include this file outside the H5FS package!"
#endif
#ifndef _H5FSpkg_H
#define _H5FSpkg_H
/* Get package's private header */
#include "H5FSprivate.h" /* File free space */
/* Other private headers needed by this file */
#include "H5ACprivate.h" /* Metadata cache */
/**************************/
/* Package Private Macros */
/**************************/
/* Size of signature information (on disk) */
#define H5FS_SIZEOF_MAGIC 4
/* Free space signatures */
#define H5FS_HDR_MAGIC "FSHD" /* Header */
#define H5FS_SECTS_MAGIC "FSSS" /* Serialized sections */
/* "Standard" size of prefix information for free space metadata */
#define H5FS_METADATA_PREFIX_SIZE ( \
4 /* Signature */ \
+ 1 /* Version */ \
+ 1 /* Metadata flags */ \
+ 4 /* Metadata checksum */ \
)
/* Size of the fractal heap header on disk */
#define H5FS_HEADER_SIZE(f) ( \
/* General metadata fields */ \
H5FS_METADATA_PREFIX_SIZE \
\
/* Free space header specific fields */ \
+ 1 /* Client ID */ \
+ H5F_SIZEOF_SIZE(f) /* Total free space tracked */ \
+ H5F_SIZEOF_SIZE(f) /* # of sections tracked */ \
+ 2 /* Number of section classes */ \
+ 2 /* Shrink percent */ \
+ 2 /* Expand percent */ \
+ 2 /* Size of address space for sections (log2 of value) */ \
+ H5F_SIZEOF_SIZE(f) /* Max. size of section to track */ \
+ H5F_SIZEOF_ADDR(f) /* Address of serialized free space sections */ \
+ H5F_SIZEOF_SIZE(f) /* Size of serialized free space sections used */ \
+ H5F_SIZEOF_SIZE(f) /* Allocated size of serialized free space sections */ \
)
/****************************/
/* Package Private Typedefs */
/****************************/
/* Free space header info */
typedef struct H5FS_hdr_t {
/* Information for H5AC cache functions, _must_ be first field in structure */
H5AC_info_t cache_info;
/* Statistics */
hsize_t tot_space; /* Total amount of space tracked */
hsize_t sect_count; /* # of sections tracked */
/* Creation information */
H5FS_client_t client; /* Type of user of this free space manager */
unsigned nclasses; /* Number of section classes handled */
unsigned shrink_percent; /* Percent of "normal" serialized size to shrink serialized space at */
unsigned expand_percent; /* Percent of "normal" serialized size to expand serialized space at */
unsigned max_sect_addr; /* Size of address space free sections are within (log2 of actual value) */
hsize_t max_sect_size; /* Maximum size of section to track */
/* Serialized space information */
haddr_t sect_addr; /* Address of the section info in the file */
hsize_t sect_size; /* Size of the section info in the file */
hsize_t alloc_sect_size; /* Allocated size of the section info in the file */
} H5FS_hdr_t;
/* Free space section bin info */
typedef struct H5FS_bin_t {
size_t sect_count; /* Total # of sections in this bin */
H5SL_t *bin_list; /* Skip list of differently sized sections */
} H5FS_bin_t;
/* Main free space info */
struct H5FS_t {
/* Stored values (from header) */
H5FS_hdr_t *hdr; /* Pointer to header info */
/* Computed/cached values */
haddr_t addr; /* Address of free space header on disk */
unsigned nbins; /* Number of bins */
size_t serial_size; /* Total serialized size of all section nodes */
size_t size_count; /* Number of differently sized sections */
unsigned sect_prefix_size; /* Size of the section serialization prefix (in bytes) */
unsigned sect_off_size; /* Size of a section offset (in bytes) */
unsigned sect_len_size; /* Size of a section length (in bytes) */
hbool_t dirty; /* Space information is dirty */
/* Memory data structures (not stored directly) */
H5FS_section_class_t *sect_cls; /* Array of section classes for this free list */
H5FS_section_info_t *single; /* Section information when free list has only one free section */
H5SL_t *merge_list; /* Skip list to hold sections for detecting merges */
H5FS_bin_t *bins; /* Array of lists of lists of free sections */
};
/*****************************/
/* Package Private Variables */
/*****************************/
/* H5FS header inherits cache-like properties from H5AC */
H5_DLLVAR const H5AC_class_t H5AC_FSPACE_HDR[1];
/* Declare a free list to manage the H5FS_hdr_t struct */
H5FL_EXTERN(H5FS_hdr_t);
/******************************/
/* Package Private Prototypes */
/******************************/
/* Debugging routines for dumping file structures */
H5_DLL herr_t H5FS_hdr_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr,
FILE *stream, int indent, int fwidth);
H5_DLL herr_t H5FS_sects_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr,
FILE *stream, int indent, int fwidth, haddr_t fs_addr, haddr_t client_addr);
/* Metadata cache callbacks */
H5_DLL herr_t H5FS_cache_hdr_dest(H5F_t *f, H5FS_hdr_t *hdr);
#endif /* _H5FSpkg_H */
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