/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /* * Programmer: Quincey Koziol * 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 /* Uncomment this macro to enable extra sanity checking */ /* #define H5FS_DEBUG */ /* Get package's private header */ #include "H5FSprivate.h" /* File free space */ /* Other private headers needed by this file */ #include "H5ACprivate.h" /* Metadata cache */ #include "H5SLprivate.h" /* Skip lists */ /**************************/ /* 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_SINFO_MAGIC "FSSE" /* Serialized sections */ /* Size of checksum information (on disk) */ #define H5FS_SIZEOF_CHKSUM 4 /* "Standard" size of prefix information for free space metadata */ #define H5FS_METADATA_PREFIX_SIZE ( \ H5FS_SIZEOF_MAGIC /* Signature */ \ + 1 /* Version */ \ + H5FS_SIZEOF_CHKSUM /* 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) /* Total # of sections tracked */ \ + H5F_SIZEOF_SIZE(f) /* # of serializable sections tracked */ \ + H5F_SIZEOF_SIZE(f) /* # of ghost 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 */ \ ) /* Size of the free space serialized sections on disk */ #define H5FS_SINFO_PREFIX_SIZE(f) ( \ /* General metadata fields */ \ H5FS_METADATA_PREFIX_SIZE \ \ /* Free space serialized sections specific fields */ \ + H5F_SIZEOF_ADDR(f) /* Address of free space header for these sections */ \ ) /****************************/ /* Package Private Typedefs */ /****************************/ /* Information for protecting a free space manager header */ typedef struct H5FS_prot_t { size_t nclasses; /* Number of section classes */ const H5FS_section_class_t **classes; /* Array of section class info */ void *cls_init_udata; /* Pointer to class init user data */ } H5FS_prot_t; /* Callback info for loading a free space header into the cache */ typedef struct H5FS_hdr_cache_ud_t { H5F_t *f; /* File that free space header is within */ H5FS_prot_t * fs_prot; /* user data for protecting */ } H5FS_hdr_cache_ud_t; /* Callback info for loading free space section info into the cache */ typedef struct H5FS_sinfo_cache_ud_t { H5F_t *f; /* File that free space section info is within */ H5FS_t *fspace; /* free space manager */ hid_t dxpl_id; } H5FS_sinfo_cache_ud_t; /* Free space section bin info */ typedef struct H5FS_bin_t { size_t tot_sect_count; /* Total # of sections in this bin */ size_t serial_sect_count; /* # of serializable sections in this bin */ size_t ghost_sect_count; /* # of un-serializable sections in this bin */ H5SL_t *bin_list; /* Skip list of differently sized sections */ } H5FS_bin_t; /* Free space node for free space sections of the same size */ typedef struct H5FS_node_t { hsize_t sect_size; /* Size of all sections on list */ size_t serial_count; /* # of serializable sections on list */ size_t ghost_count; /* # of un-serializable sections on list */ H5SL_t *sect_list; /* Skip list to hold pointers to actual free list section node */ } H5FS_node_t; /* Information about sections managed */ typedef struct H5FS_sinfo_t { /* Information for H5AC cache functions, _must_ be first field in structure */ H5AC_info_t cache_info; /* Stored information */ H5FS_bin_t *bins; /* Array of lists of lists of free sections */ /* Computed/cached values */ unsigned nbins; /* Number of bins */ size_t serial_size; /* Total size of all serializable sections */ size_t tot_size_count; /* Total number of differently sized sections */ size_t serial_size_count; /* Total number of differently sized serializable sections */ size_t ghost_size_count; /* Total number of differently sized un-serializable 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) */ H5FS_t *fspace; /* Pointer to free space manager that owns sections */ /* Memory data structures (not stored directly) */ H5SL_t *merge_list; /* Skip list to hold sections for detecting merges */ } H5FS_sinfo_t; /* Main free space info */ struct H5FS_t { /* Information for H5AC cache functions, _must_ be first field in structure */ H5AC_info_t cache_info; /* Stored information */ /* Statistics about sections managed */ hsize_t tot_space; /* Total amount of space tracked */ hsize_t tot_sect_count; /* Total # of sections tracked */ hsize_t serial_sect_count; /* # of serializable sections tracked */ hsize_t ghost_sect_count; /* # of un-serializable sections tracked */ /* Creation parameters */ 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 section 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 */ /* Computed/cached values */ haddr_t addr; /* Address of free space header on disk */ H5FS_sinfo_t *sinfo; /* Section information */ /* Memory data structures (not stored directly) */ H5FS_section_class_t *sect_cls; /* Array of section classes for this free list */ }; /*****************************/ /* Package Private Variables */ /*****************************/ /* H5FS header inherits cache-like properties from H5AC */ H5_DLLVAR const H5AC_class_t H5AC_FSPACE_HDR[1]; /* H5FS section info inherits cache-like properties from H5AC */ H5_DLLVAR const H5AC_class_t H5AC_FSPACE_SINFO[1]; /* Declare a free list to manage the H5FS_node_t struct */ H5FL_EXTERN(H5FS_node_t); /* Declare a free list to manage the H5FS_bin_t sequence information */ H5FL_SEQ_EXTERN(H5FS_bin_t); /* Declare a free list to manage the H5FS_sinfo_t struct */ H5FL_EXTERN(H5FS_sinfo_t); /* Declare a free list to manage the H5FS_t struct */ H5FL_EXTERN(H5FS_t); /******************************/ /* Package Private Prototypes */ /******************************/ /* Free space manager header routines */ H5_DLL H5FS_t *H5FS_new(size_t nclasses, const H5FS_section_class_t *classes[], void *cls_init_udata); /* Free space section routines */ H5_DLL H5FS_sinfo_t *H5FS_sinfo_new(H5F_t *f, H5FS_t *fspace); /* Debugging routines for dumping file structures */ H5_DLL herr_t H5FS_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(H5FS_t *hdr); H5_DLL herr_t H5FS_cache_sinfo_dest(H5FS_sinfo_t *sinfo); /* Sanity check routines */ #ifdef H5FS_DEBUG H5_DLL herr_t H5FS_assert(const H5FS_t *fspace); H5_DLL herr_t H5FS_sect_assert(const H5FS_t *fspace); #endif /* H5FS_DEBUG */ #endif /* _H5FSpkg_H */