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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://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Programmer: Quincey Koziol
* Monday, January 31, 2005
*
* Purpose: This file contains declarations which are visible only within
* the H5B2 package. Source files outside the H5B2 package should
* include H5B2private.h instead.
*/
#if !(defined H5B2_FRIEND || defined H5B2_MODULE)
#error "Do not include this file outside the H5B2 package!"
#endif
#ifndef _H5B2pkg_H
#define _H5B2pkg_H
/* Get package's private header */
#include "H5B2private.h"
/* Other private headers needed by this file */
#include "H5ACprivate.h" /* Metadata cache */
#include "H5FLprivate.h" /* Free Lists */
/**************************/
/* Package Private Macros */
/**************************/
/* Size of storage for number of records per node (on disk) */
#define H5B2_SIZEOF_RECORDS_PER_NODE (unsigned)2
/* Size of a "tree pointer" (on disk) */
/* (essentially, the largest internal pointer allowed) */
#define H5B2_TREE_POINTER_SIZE(sizeof_addr, sizeof_size) \
((sizeof_addr) + H5B2_SIZEOF_RECORDS_PER_NODE + (sizeof_size))
/* Size of a internal node pointer (on disk) */
#define H5B2_INT_POINTER_SIZE(h, d) \
((unsigned)(h)->sizeof_addr /* Address of child node */ \
+ (h)->max_nrec_size /* # of records in child node */ \
+ (h)->node_info[(d)-1].cum_max_nrec_size /* Total # of records in child & below */ \
)
/* Size of checksum information (on disk) */
#define H5B2_SIZEOF_CHKSUM 4
/* Format overhead for all v2 B-tree metadata in the file */
#define H5B2_METADATA_PREFIX_SIZE \
((unsigned)H5_SIZEOF_MAGIC /* Signature */ \
+ (unsigned)1 /* Version */ \
+ (unsigned)1 /* Tree type */ \
+ (unsigned)H5B2_SIZEOF_CHKSUM /* Metadata checksum */ \
)
/* Size of the v2 B-tree header on disk */
#define H5B2_HEADER_SIZE(sizeof_addr, sizeof_size) \
(/* General metadata fields */ \
H5B2_METADATA_PREFIX_SIZE \
\
/* Header specific fields */ \
+ (unsigned)4 /* Node size, in bytes */ \
+ (unsigned)2 /* Record size, in bytes */ \
+ (unsigned)2 /* Depth of tree */ \
+ (unsigned)1 /* Split % of full (as integer, ie. "98" means 98%) */ \
+ (unsigned)1 /* Merge % of full (as integer, ie. "98" means 98%) */ \
+ H5B2_TREE_POINTER_SIZE(sizeof_addr, sizeof_size) /* Node pointer to root node in tree */ \
)
/* Size of the v2 B-tree header on disk (via file pointer) */
#define H5B2_HEADER_SIZE_FILE(f) (H5B2_HEADER_SIZE(H5F_SIZEOF_ADDR(f), H5F_SIZEOF_SIZE(f)))
/* Size of the v2 B-tree header on disk (via v2 B-tree header) */
#define H5B2_HEADER_SIZE_HDR(h) (H5B2_HEADER_SIZE((h)->sizeof_addr, (h)->sizeof_size))
/* Size of the v2 B-tree internal node prefix */
#define H5B2_INT_PREFIX_SIZE \
(/* General metadata fields */ \
H5B2_METADATA_PREFIX_SIZE \
\
/* Header specific fields */ /* <none> */ \
)
/* Size of the v2 B-tree leaf node prefix */
#define H5B2_LEAF_PREFIX_SIZE \
(/* General metadata fields */ \
H5B2_METADATA_PREFIX_SIZE \
\
/* Header specific fields */ /* <none> */ \
)
/* Macro to retrieve pointer to i'th native record for native record buffer */
#define H5B2_NAT_NREC(b, hdr, idx) ((b) + (hdr)->nat_off[(idx)])
/* Macro to retrieve pointer to i'th native record for internal node */
#define H5B2_INT_NREC(i, hdr, idx) H5B2_NAT_NREC((i)->int_native, (hdr), (idx))
/* Macro to retrieve pointer to i'th native record for leaf node */
#define H5B2_LEAF_NREC(l, hdr, idx) H5B2_NAT_NREC((l)->leaf_native, (hdr), (idx))
/* Number of records that fit into internal node */
/* (accounts for extra node pointer by counting it in with the prefix bytes) */
#define H5B2_NUM_INT_REC(h, d) \
(((h)->node_size - (H5B2_INT_PREFIX_SIZE + H5B2_INT_POINTER_SIZE(h, d))) / \
((h)->rrec_size + H5B2_INT_POINTER_SIZE(h, d)))
/* Uncomment this macro to enable extra sanity checking */
/* #define H5B2_DEBUG */
/****************************/
/* Package Private Typedefs */
/****************************/
/* A "node pointer" to another B-tree node */
typedef struct {
haddr_t addr; /* Address of other node */
uint16_t node_nrec; /* Number of records used in node pointed to */
hsize_t all_nrec; /* Number of records in node pointed to and all it's children */
} H5B2_node_ptr_t;
/* Information about a node at a given depth */
typedef struct {
unsigned max_nrec; /* Max. number of records in node */
unsigned split_nrec; /* Number of records to split node at */
unsigned merge_nrec; /* Number of records to merge node at */
hsize_t cum_max_nrec; /* Cumulative max. # of records below this node's depth */
uint8_t cum_max_nrec_size; /* Size to store cumulative max. # of records for this node (in bytes) */
H5FL_fac_head_t *nat_rec_fac; /* Factory for native record blocks */
H5FL_fac_head_t *node_ptr_fac; /* Factory for node pointer blocks */
} H5B2_node_info_t;
/* The B-tree header information */
typedef struct H5B2_hdr_t {
/* Information for H5AC cache functions, _must_ be first field in structure */
H5AC_info_t cache_info;
/* Internal B-tree information (stored) */
H5B2_node_ptr_t root; /* Node pointer to root node in B-tree */
/* Information set by user (stored) */
uint8_t split_percent; /* Percent full at which to split the node, when inserting */
uint8_t merge_percent; /* Percent full at which to merge the node, when deleting */
uint32_t node_size; /* Size of B-tree nodes, in bytes */
uint32_t rrec_size; /* Size of "raw" (on disk) record, in bytes */
/* Dynamic information (stored) */
uint16_t depth; /* B-tree's overall depth */
/* Derived information from user's information (not stored) */
uint8_t max_nrec_size; /* Size to store max. # of records in any node (in bytes) */
/* Shared internal data structures (not stored) */
H5F_t * f; /* Pointer to the file that the B-tree is in */
haddr_t addr; /* Address of B-tree header in the file */
size_t hdr_size; /* Size of the B-tree header on disk */
size_t rc; /* Reference count of nodes using this header */
size_t file_rc; /* Reference count of files using this header */
hbool_t pending_delete; /* B-tree is pending deletion */
uint8_t sizeof_size; /* Size of file sizes */
uint8_t sizeof_addr; /* Size of file addresses */
H5B2_remove_t remove_op; /* Callback operator for deleting B-tree */
void * remove_op_data; /* B-tree deletion callback's context */
uint8_t * page; /* Common disk page for I/O */
size_t * nat_off; /* Array of offsets of native records */
H5B2_node_info_t *node_info; /* Table of node info structs for current depth of B-tree */
void * min_native_rec; /* Pointer to minimum native record */
void * max_native_rec; /* Pointer to maximum native record */
/* SWMR / Flush dependency information (not stored) */
hbool_t swmr_write; /* Whether we are doing SWMR writes */
H5AC_proxy_entry_t *top_proxy; /* 'Top' proxy cache entry for all B-tree entries */
void * parent; /* Pointer to 'top' proxy flush dependency
* parent, if it exists, otherwise NULL.
* If the v2 B-tree is being used to index a
* chunked dataset and the dataset metadata is
* modified by a SWMR writer, this field will
* be set equal to the object header proxy
* that is the flush dependency parent
* of the v2 B-tree header.
*
* The field is used to avoid duplicate setups
* of the flush dependency relationship, and to
* allow the v2 B-tree header to destroy the
* flush dependency on receipt of an eviction
* notification from the metadata cache.
*/
uint64_t shadow_epoch; /* Epoch of header, for making shadow copies */
/* Client information (not stored) */
const H5B2_class_t *cls; /* Class of B-tree client */
void * cb_ctx; /* Client callback context */
} H5B2_hdr_t;
/* B-tree leaf node information */
typedef struct H5B2_leaf_t {
/* Information for H5AC cache functions, _must_ be first field in structure */
H5AC_info_t cache_info;
/* Internal B-tree information */
H5B2_hdr_t *hdr; /* Pointer to the [pinned] v2 B-tree header */
uint8_t * leaf_native; /* Pointer to native records */
uint16_t nrec; /* Number of records in node */
/* SWMR / Flush dependency information (not stored) */
H5AC_proxy_entry_t *top_proxy; /* 'Top' proxy cache entry for all B-tree entries */
void * parent; /* Flush dependency parent for leaf */
uint64_t shadow_epoch; /* Epoch of node, for making shadow copies */
} H5B2_leaf_t;
/* B-tree internal node information */
typedef struct H5B2_internal_t {
/* Information for H5AC cache functions, _must_ be first field in structure */
H5AC_info_t cache_info;
/* Internal B-tree information */
H5B2_hdr_t * hdr; /* Pointer to the [pinned] v2 B-tree header */
uint8_t * int_native; /* Pointer to native records */
H5B2_node_ptr_t *node_ptrs; /* Pointer to node pointers */
uint16_t nrec; /* Number of records in node */
uint16_t depth; /* Depth of this node in the B-tree */
/* SWMR / Flush dependency information (not stored) */
H5AC_proxy_entry_t *top_proxy; /* 'Top' proxy cache entry for all B-tree entries */
void * parent; /* Flush dependency parent for internal node */
uint64_t shadow_epoch; /* Epoch of node, for making shadow copies */
} H5B2_internal_t;
/* v2 B-tree */
struct H5B2_t {
H5B2_hdr_t *hdr; /* Pointer to internal v2 B-tree header info */
H5F_t * f; /* Pointer to file for v2 B-tree */
};
/* Node position, for min/max determination */
typedef enum H5B2_nodepos_t {
H5B2_POS_ROOT, /* Node is root (i.e. both right & left-most in tree) */
H5B2_POS_RIGHT, /* Node is right-most in tree, at a given depth */
H5B2_POS_LEFT, /* Node is left-most in tree, at a given depth */
H5B2_POS_MIDDLE /* Node is neither right or left-most in tree */
} H5B2_nodepos_t;
/* Update status */
typedef enum H5B2_update_status_t {
H5B2_UPDATE_UNKNOWN, /* Unknown update status (initial state) */
H5B2_UPDATE_MODIFY_DONE, /* Update successfully modified existing record */
H5B2_UPDATE_SHADOW_DONE, /* Update modified existing record and modified node was shadowed */
H5B2_UPDATE_INSERT_DONE, /* Update inserted record successfully */
H5B2_UPDATE_INSERT_CHILD_FULL /* Update will insert record, but child is full */
} H5B2_update_status_t;
/* Callback info for loading a v2 B-tree header into the cache */
typedef struct H5B2_hdr_cache_ud_t {
H5F_t * f; /* File that v2 b-tree header is within */
haddr_t addr; /* Address of B-tree header in the file */
void * ctx_udata; /* User-data for protecting */
} H5B2_hdr_cache_ud_t;
/* Callback info for loading a v2 B-tree internal node into the cache */
typedef struct H5B2_internal_cache_ud_t {
H5F_t * f; /* File that v2 b-tree header is within */
H5B2_hdr_t *hdr; /* v2 B-tree header */
void * parent; /* Flush dependency parent */
uint16_t nrec; /* Number of records in node to load */
uint16_t depth; /* Depth of node to load */
} H5B2_internal_cache_ud_t;
/* Callback info for loading a v2 B-tree leaf node into the cache */
typedef struct H5B2_leaf_cache_ud_t {
H5F_t * f; /* File that v2 b-tree header is within */
H5B2_hdr_t *hdr; /* v2 B-tree header */
void * parent; /* Flush dependency parent */
uint16_t nrec; /* Number of records in node to load */
} H5B2_leaf_cache_ud_t;
#ifdef H5B2_TESTING
/* Node information for testing */
typedef struct H5B2_node_info_test_t {
uint16_t depth; /* Depth of node */
uint16_t nrec; /* Number of records in node */
} H5B2_node_info_test_t;
#endif /* H5B2_TESTING */
/*****************************/
/* Package Private Variables */
/*****************************/
/* Declare a free list to manage the H5B2_internal_t struct */
H5FL_EXTERN(H5B2_internal_t);
/* Declare a free list to manage the H5B2_leaf_t struct */
H5FL_EXTERN(H5B2_leaf_t);
/* Internal v2 B-tree testing class */
#ifdef H5B2_TESTING
H5_DLLVAR const H5B2_class_t H5B2_TEST[1];
H5_DLLVAR const H5B2_class_t H5B2_TEST2[1];
/* B-tree record for testing H5B2_TEST2 class */
typedef struct H5B2_test_rec_t {
hsize_t key; /* Key for record */
hsize_t val; /* Value for record */
} H5B2_test_rec_t;
#endif /* H5B2_TESTING */
/* Array of v2 B-tree client ID -> client class mappings */
extern const H5B2_class_t *const H5B2_client_class_g[H5B2_NUM_BTREE_ID];
/******************************/
/* Package Private Prototypes */
/******************************/
/* Generic routines */
H5_DLL herr_t H5B2__create_flush_depend(H5AC_info_t *parent_entry, H5AC_info_t *child_entry);
H5_DLL herr_t H5B2__update_flush_depend(H5B2_hdr_t *hdr, unsigned depth, const H5B2_node_ptr_t *node_ptr,
void *old_parent, void *new_parent);
H5_DLL herr_t H5B2__destroy_flush_depend(H5AC_info_t *parent_entry, H5AC_info_t *child_entry);
/* Internal node management routines */
H5_DLL herr_t H5B2__split1(H5B2_hdr_t *hdr, uint16_t depth, H5B2_node_ptr_t *curr_node_ptr,
unsigned *parent_cache_info_flags_ptr, H5B2_internal_t *internal,
unsigned *internal_flags_ptr, unsigned idx);
H5_DLL herr_t H5B2__redistribute2(H5B2_hdr_t *hdr, uint16_t depth, H5B2_internal_t *internal, unsigned idx);
H5_DLL herr_t H5B2__redistribute3(H5B2_hdr_t *hdr, uint16_t depth, H5B2_internal_t *internal,
unsigned *internal_flags_ptr, unsigned idx);
H5_DLL herr_t H5B2__merge2(H5B2_hdr_t *hdr, uint16_t depth, H5B2_node_ptr_t *curr_node_ptr,
unsigned *parent_cache_info_flags_ptr, H5B2_internal_t *internal,
unsigned *internal_flags_ptr, unsigned idx);
H5_DLL herr_t H5B2__merge3(H5B2_hdr_t *hdr, uint16_t depth, H5B2_node_ptr_t *curr_node_ptr,
unsigned *parent_cache_info_flags_ptr, H5B2_internal_t *internal,
unsigned *internal_flags_ptr, unsigned idx);
/* Routines for managing B-tree header info */
H5_DLL H5B2_hdr_t *H5B2__hdr_alloc(H5F_t *f);
H5_DLL haddr_t H5B2__hdr_create(H5F_t *f, const H5B2_create_t *cparam, void *ctx_udata);
H5_DLL herr_t H5B2__hdr_init(H5B2_hdr_t *hdr, const H5B2_create_t *cparam, void *ctx_udata, uint16_t depth);
H5_DLL herr_t H5B2__hdr_incr(H5B2_hdr_t *hdr);
H5_DLL herr_t H5B2__hdr_decr(H5B2_hdr_t *hdr);
H5_DLL herr_t H5B2__hdr_fuse_incr(H5B2_hdr_t *hdr);
H5_DLL size_t H5B2__hdr_fuse_decr(H5B2_hdr_t *hdr);
H5_DLL herr_t H5B2__hdr_dirty(H5B2_hdr_t *hdr);
H5_DLL H5B2_hdr_t *H5B2__hdr_protect(H5F_t *f, haddr_t hdr_addr, void *ctx_udata, unsigned flags);
H5_DLL herr_t H5B2__hdr_unprotect(H5B2_hdr_t *hdr, unsigned cache_flags);
H5_DLL herr_t H5B2__hdr_delete(H5B2_hdr_t *hdr);
/* Routines for operating on leaf nodes */
H5_DLL H5B2_leaf_t *H5B2__protect_leaf(H5B2_hdr_t *hdr, void *parent, H5B2_node_ptr_t *node_ptr,
hbool_t shadow, unsigned flags);
H5_DLL herr_t H5B2__swap_leaf(H5B2_hdr_t *hdr, uint16_t depth, H5B2_internal_t *internal,
unsigned *internal_flags_ptr, unsigned idx, void *swap_loc);
/* Routines for operating on internal nodes */
H5_DLL H5B2_internal_t *H5B2__protect_internal(H5B2_hdr_t *hdr, void *parent, H5B2_node_ptr_t *node_ptr,
uint16_t depth, hbool_t shadow, unsigned flags);
/* Routines for allocating nodes */
H5_DLL herr_t H5B2__split_root(H5B2_hdr_t *hdr);
H5_DLL herr_t H5B2__create_leaf(H5B2_hdr_t *hdr, void *parent, H5B2_node_ptr_t *node_ptr);
H5_DLL herr_t H5B2__create_internal(H5B2_hdr_t *hdr, void *parent, H5B2_node_ptr_t *node_ptr, uint16_t depth);
/* Routines for releasing structures */
H5_DLL herr_t H5B2__hdr_free(H5B2_hdr_t *hdr);
H5_DLL herr_t H5B2__leaf_free(H5B2_leaf_t *l);
H5_DLL herr_t H5B2__internal_free(H5B2_internal_t *i);
/* Routines for inserting records */
H5_DLL herr_t H5B2__insert(H5B2_hdr_t *hdr, void *udata);
H5_DLL herr_t H5B2__insert_internal(H5B2_hdr_t *hdr, uint16_t depth, unsigned *parent_cache_info_flags_ptr,
H5B2_node_ptr_t *curr_node_ptr, H5B2_nodepos_t curr_pos, void *parent,
void *udata);
H5_DLL herr_t H5B2__insert_leaf(H5B2_hdr_t *hdr, H5B2_node_ptr_t *curr_node_ptr, H5B2_nodepos_t curr_pos,
void *parent, void *udata);
/* Routines for update records */
H5_DLL herr_t H5B2__update_internal(H5B2_hdr_t *hdr, uint16_t depth, unsigned *parent_cache_info_flags_ptr,
H5B2_node_ptr_t *curr_node_ptr, H5B2_update_status_t *status,
H5B2_nodepos_t curr_pos, void *parent, void *udata, H5B2_modify_t op,
void *op_data);
H5_DLL herr_t H5B2__update_leaf(H5B2_hdr_t *hdr, H5B2_node_ptr_t *curr_node_ptr, H5B2_update_status_t *status,
H5B2_nodepos_t curr_pos, void *parent, void *udata, H5B2_modify_t op,
void *op_data);
/* Routines for iterating over nodes/records */
H5_DLL herr_t H5B2__iterate_node(H5B2_hdr_t *hdr, uint16_t depth, const H5B2_node_ptr_t *curr_node,
void *parent, H5B2_operator_t op, void *op_data);
H5_DLL herr_t H5B2__node_size(H5B2_hdr_t *hdr, uint16_t depth, const H5B2_node_ptr_t *curr_node, void *parent,
hsize_t *op_data);
/* Routines for locating records */
H5_DLL herr_t H5B2__locate_record(const H5B2_class_t *type, unsigned nrec, size_t *rec_off,
const uint8_t *native, const void *udata, unsigned *idx, int *result);
H5_DLL herr_t H5B2__neighbor_internal(H5B2_hdr_t *hdr, uint16_t depth, H5B2_node_ptr_t *curr_node_ptr,
void *neighbor_loc, H5B2_compare_t comp, void *parent, void *udata,
H5B2_found_t op, void *op_data);
H5_DLL herr_t H5B2__neighbor_leaf(H5B2_hdr_t *hdr, H5B2_node_ptr_t *curr_node_ptr, void *neighbor_loc,
H5B2_compare_t comp, void *parent, void *udata, H5B2_found_t op,
void *op_data);
/* Routines for removing records */
H5_DLL herr_t H5B2__remove_internal(H5B2_hdr_t *hdr, hbool_t *depth_decreased, void *swap_loc,
void *swap_parent, uint16_t depth, H5AC_info_t *parent_cache_info,
unsigned *parent_cache_info_flags_ptr, H5B2_nodepos_t curr_pos,
H5B2_node_ptr_t *curr_node_ptr, void *udata, H5B2_remove_t op,
void *op_data);
H5_DLL herr_t H5B2__remove_leaf(H5B2_hdr_t *hdr, H5B2_node_ptr_t *curr_node_ptr, H5B2_nodepos_t curr_pos,
void *parent, void *udata, H5B2_remove_t op, void *op_data);
H5_DLL herr_t H5B2__remove_internal_by_idx(H5B2_hdr_t *hdr, hbool_t *depth_decreased, void *swap_loc,
void *swap_parent, uint16_t depth, H5AC_info_t *parent_cache_info,
unsigned * parent_cache_info_flags_ptr,
H5B2_node_ptr_t *curr_node_ptr, H5B2_nodepos_t curr_pos, hsize_t n,
H5B2_remove_t op, void *op_data);
H5_DLL herr_t H5B2__remove_leaf_by_idx(H5B2_hdr_t *hdr, H5B2_node_ptr_t *curr_node_ptr,
H5B2_nodepos_t curr_pos, void *parent, unsigned idx, H5B2_remove_t op,
void *op_data);
/* Routines for deleting nodes */
H5_DLL herr_t H5B2__delete_node(H5B2_hdr_t *hdr, uint16_t depth, const H5B2_node_ptr_t *curr_node,
void *parent, H5B2_remove_t op, void *op_data);
/* Debugging routines for dumping file structures */
H5_DLL herr_t H5B2__hdr_debug(H5F_t *f, haddr_t addr, FILE *stream, int indent, int fwidth,
const H5B2_class_t *type, haddr_t obj_addr);
H5_DLL herr_t H5B2__int_debug(H5F_t *f, haddr_t addr, FILE *stream, int indent, int fwidth,
const H5B2_class_t *type, haddr_t hdr_addr, unsigned nrec, unsigned depth,
haddr_t obj_addr);
H5_DLL herr_t H5B2__leaf_debug(H5F_t *f, haddr_t addr, FILE *stream, int indent, int fwidth,
const H5B2_class_t *type, haddr_t hdr_addr, unsigned nrec, haddr_t obj_addr);
/* Sanity checking routines */
#ifdef H5B2_DEBUG
/* Don't label these with H5_ATTR_PURE or you'll get even more warnings... */
H5_DLL herr_t H5B2__assert_internal(hsize_t parent_all_nrec, const H5B2_hdr_t *hdr,
const H5B2_internal_t *internal);
H5_DLL herr_t H5B2__assert_internal2(hsize_t parent_all_nrec, const H5B2_hdr_t *hdr,
const H5B2_internal_t *internal, const H5B2_internal_t *internal2);
H5_DLL herr_t H5B2__assert_leaf(const H5B2_hdr_t *hdr, const H5B2_leaf_t *leaf);
H5_DLL herr_t H5B2__assert_leaf2(const H5B2_hdr_t *hdr, const H5B2_leaf_t *leaf, const H5B2_leaf_t *leaf2);
#endif /* H5B2_DEBUG */
/* Testing routines */
#ifdef H5B2_TESTING
H5_DLL herr_t H5B2__get_root_addr_test(H5B2_t *bt2, haddr_t *root_addr);
H5_DLL int H5B2__get_node_depth_test(H5B2_t *bt2, void *udata);
H5_DLL herr_t H5B2__get_node_info_test(H5B2_t *bt2, void *udata, H5B2_node_info_test_t *ninfo);
#endif /* H5B2_TESTING */
#endif /* _H5B2pkg_H */
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