file_hash.h File Reference

#include "config.h"
#include "error_manager.h"
#include "oid.h"

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Classes
struct	fh_info
struct	fh_entry
struct	fh_page_hdr
struct	fh_table

Macros
#define	fh_oidk_key   fh_key_data.fh_oidkey.key
#define	fh_oidk_data   fh_key_data.fh_oidkey.data
#define	fh_intk_key   fh_key_data.fh_intkey.key
#define	fh_intk_data   fh_key_data.fh_intkey.data
#define	INVALID_FILE_POS   (FH_FILE_POS)~0

Typedefs
typedef struct fh_info	FH_INFO
typedef unsigned int	FH_FILE_POS
typedef struct fh_entry	FH_ENTRY
typedef struct fh_entry *	FH_ENTRY_PTR
typedef struct fh_page_hdr	FH_PAGE_HDR
typedef unsigned int(*	HASH_FUNC) (const void *info, unsigned int htsize)
typedef int(*	CMP_FUNC) (const void *key1, const void *key2)
typedef struct fh_table	FH_TABLE
typedef void *	FH_KEY
typedef void *	FH_DATA

Enumerations
enum	FH_KEY_TYPE { FH_OID_KEY = 1, FH_INT_KEY = 2 }

Functions
FH_TABLE *	fh_create (const char *, int, int, int, const char *, FH_KEY_TYPE, int, HASH_FUNC, CMP_FUNC)
int	fh_put (FH_TABLE *ht, FH_KEY key, FH_DATA data)
int	fh_get (FH_TABLE *ht, FH_KEY key, FH_DATA *data)
void	fh_destroy (FH_TABLE *ht)
void	fh_dump (FH_TABLE *ht)

Macro Definition Documentation

#define fh_intk_data   fh_key_data.fh_intkey.data

Definition at line 54 of file file_hash.h.

Referenced by fh_create().

#define fh_intk_key   fh_key_data.fh_intkey.key

Definition at line 53 of file file_hash.h.

#define fh_oidk_data   fh_key_data.fh_oidkey.data

Definition at line 52 of file file_hash.h.

Referenced by fh_create().

#define fh_oidk_key   fh_key_data.fh_oidkey.key

Definition at line 51 of file file_hash.h.

#define INVALID_FILE_POS   (FH_FILE_POS)~0

Definition at line 57 of file file_hash.h.

Referenced by fh_create(), fh_get(), fh_put(), and fh_read_page().

Typedef Documentation

typedef int(* CMP_FUNC) (const void *key1, const void *key2)

Definition at line 78 of file file_hash.h.

typedef void* FH_DATA

Definition at line 113 of file file_hash.h.

typedef struct fh_entry FH_ENTRY

typedef struct fh_entry* FH_ENTRY_PTR

Definition at line 66 of file file_hash.h.

typedef unsigned int FH_FILE_POS

Definition at line 56 of file file_hash.h.

typedef struct fh_info FH_INFO

typedef void* FH_KEY

Definition at line 112 of file file_hash.h.

typedef struct fh_page_hdr FH_PAGE_HDR

typedef struct fh_table FH_TABLE

typedef unsigned int(* HASH_FUNC) (const void *info, unsigned int htsize)

Definition at line 77 of file file_hash.h.

Enumeration Type Documentation

enum FH_KEY_TYPE

Enumerator
FH_OID_KEY
FH_INT_KEY

Definition at line 80 of file file_hash.h.

Function Documentation

FH_TABLE* fh_create	(	const char *	,
		int	,
		int	,
		int	,
		const char *	,
		FH_KEY_TYPE	,
		int	,
		HASH_FUNC	,
		CMP_FUNC
	)

Definition at line 164 of file file_hash.c.

References fh_table::bitmap, fh_table::bitmap_size, cached_pages, fh_table::cached_pages, fh_table::cmpfun, fh_table::data_size, DB_SIZEOF, fh_table::entries_per_page, fh_table::entry_size, est_size, fh_table::fd, fh_calculate_htsize(), fh_destroy(), fh_page_hdr::fh_entries, FH_INT_KEY, fh_intk_data, FH_OID_KEY, fh_oidk_data, fh_table::hash_filename, fh_table::hfun, INVALID_FILE_POS, fh_table::key_type, MIGDB_MSG_FH_HASH_FILENAME, MSGCAT_CATALOG_UTILS, msgcat_message(), MSGCAT_UTIL_SET_MIGDB, fh_table::name, fh_table::ncollisions, fh_table::nentries, fh_page_hdr::next, NULL, null_int, filesys::open_temp_filedes(), OR_PUT_NULL_OID, fh_table::overflow, fh_page_hdr::page, page_size, fh_table::page_size, fh_table::pg_hdr, fh_table::pg_hdr_alloc, fh_table::pg_hdr_free, fh_table::pg_hdr_last, fh_page_hdr::prev, fh_table::size, and strdup().

Referenced by extract_objects().

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void fh_destroy

(

FH_TABLE *

ht

)

Definition at line 310 of file file_hash.c.

References fh_table::bitmap, fh_table::fd, fh_page_hdr::fh_entries, free_and_init, fh_table::hash_filename, fh_page_hdr::next, fh_table::pg_hdr, and fh_table::pg_hdr_alloc.

Referenced by extractobjects_cleanup(), and fh_create().

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void fh_dump

(

FH_TABLE *

ht

)

Definition at line 833 of file file_hash.c.

References fh_table::bitmap, fh_table::bitmap_size, fh_table::cached_pages, fh_table::data_size, fh_table::entries_per_page, fh_table::entry_size, FH_OID_KEY, fh_table::hash_filename, fh_table::key_type, MIGDB_MSG_FH_CACHED_PAGES, MIGDB_MSG_FH_DATA_SIZE, MIGDB_MSG_FH_ENTRIES_PER_PAGE, MIGDB_MSG_FH_ENTRY_SIZE, MIGDB_MSG_FH_FREE_PAGE_HEADER, MIGDB_MSG_FH_HASH_FILENAME2, MIGDB_MSG_FH_KEY_TYPE, MIGDB_MSG_FH_LAST_PAGE_HEADER, MIGDB_MSG_FH_NAME, MIGDB_MSG_FH_NEXT_OVERFLOW_ENTRY, MIGDB_MSG_FH_NUM_COLLISIONS, MIGDB_MSG_FH_NUM_ENTRIES, MIGDB_MSG_FH_PAGE_BITMAP, MIGDB_MSG_FH_PAGE_BITMAP_SIZE, MIGDB_MSG_FH_PAGE_HEADERS, MIGDB_MSG_FH_PAGE_SIZE, MIGDB_MSG_FH_SIZE, MSGCAT_CATALOG_UTILS, msgcat_message(), MSGCAT_UTIL_SET_MIGDB, fh_table::name, fh_table::ncollisions, fh_table::nentries, fh_table::overflow, fh_table::page_size, fh_table::pg_hdr, fh_table::pg_hdr_free, and fh_table::pg_hdr_last.

Referenced by extractobjects_cleanup().

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int fh_get	(	FH_TABLE *	ht,
		FH_KEY	key,
		FH_DATA *	data
	)

Definition at line 353 of file file_hash.c.

References fh_table::cmpfun, fh_table::entries_per_page, fh_table::entry_size, ER_GENERIC_ERROR, fh_page_hdr::fh_entries, FH_INT_KEY, FH_OID_KEY, fh_table::hfun, fh_entry::info, INVALID_FILE_POS, fh_table::key_type, fh_entry::next, NO_ERROR, NULL, null_int, null_oid, and fh_table::size.

Referenced by process_value(), set_referenced_subclasses(), and update_hash().

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int fh_put	(	FH_TABLE *	ht,
		FH_KEY	key,
		FH_DATA	data
	)

Definition at line 449 of file file_hash.c.

References fh_table::cmpfun, fh_table::data_size, fh_table::entries_per_page, fh_table::entry_size, ER_GENERIC_ERROR, fh_page_hdr::fh_entries, FH_INT_KEY, FH_OID_KEY, fh_table::hfun, fh_entry::info, INVALID_FILE_POS, fh_table::key_type, fh_table::ncollisions, fh_table::nentries, fh_entry::next, NO_ERROR, NULL, null_int, null_oid, fh_table::overflow, and fh_table::size.

Referenced by extract_objects(), and update_hash().

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