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Diffstat (limited to 'db2/db.h')
| -rw-r--r-- | db2/db.h | 1033 |
1 files changed, 0 insertions, 1033 deletions
diff --git a/db2/db.h b/db2/db.h deleted file mode 100644 index 306f2ffce4..0000000000 --- a/db2/db.h +++ /dev/null @@ -1,1033 +0,0 @@ -/*- - * See the file LICENSE for redistribution information. - * - * Copyright (c) 1996, 1997, 1998 - * Sleepycat Software. All rights reserved. - * - * @(#)db.h 10.174 (Sleepycat) 1/3/99 - */ - -#ifndef _DB_H_ -#define _DB_H_ - -#ifndef __NO_SYSTEM_INCLUDES -#include <sys/types.h> - -#include <stdio.h> -#endif - -/* - * XXX - * MacOS: ensure that Metrowerks C makes enumeration types int sized. - */ -#ifdef __MWERKS__ -#pragma enumsalwaysint on -#endif - -/* - * XXX - * Handle function prototypes and the keyword "const". This steps on name - * space that DB doesn't control, but all of the other solutions are worse. - * - * XXX - * While Microsoft's compiler is ANSI C compliant, it doesn't have _STDC_ - * defined by default, you specify a command line flag or #pragma to turn - * it on. Don't do that, however, because some of Microsoft's own header - * files won't compile. - */ -#undef __P -#if defined(__STDC__) || defined(__cplusplus) || defined(_MSC_VER) -#define __P(protos) protos /* ANSI C prototypes */ -#else -#define const -#define __P(protos) () /* K&R C preprocessor */ -#endif - -/* - * !!! - * DB needs basic information about specifically sized types. If they're - * not provided by the system, typedef them here. - * - * We protect them against multiple inclusion using __BIT_TYPES_DEFINED__, - * as does BIND and Kerberos, since we don't know for sure what #include - * files the user is using. - * - * !!! - * We also provide the standard u_int, u_long etc., if they're not provided - * by the system. - */ - -#define DB_VERSION_MAJOR 2 -#define DB_VERSION_MINOR 7 -#define DB_VERSION_PATCH 5 -#define DB_VERSION_STRING "Sleepycat Software: Berkeley DB 2.7.5: (04/18/99)" - -typedef u_int32_t db_pgno_t; /* Page number type. */ -typedef u_int16_t db_indx_t; /* Page offset type. */ -#define DB_MAX_PAGES 0xffffffff /* >= # of pages in a file */ - -typedef u_int32_t db_recno_t; /* Record number type. */ -#define DB_MAX_RECORDS 0xffffffff /* >= # of records in a tree */ - -typedef size_t DB_LOCK; /* Object returned by lock manager. */ - -/* Forward structure declarations, so applications get type checking. */ -struct __db; typedef struct __db DB; -#ifdef DB_DBM_HSEARCH - typedef struct __db DBM; -#endif -struct __db_bt_stat; typedef struct __db_bt_stat DB_BTREE_STAT; -struct __db_dbt; typedef struct __db_dbt DBT; -struct __db_env; typedef struct __db_env DB_ENV; -struct __db_ilock; typedef struct __db_ilock DB_LOCK_ILOCK; -struct __db_info; typedef struct __db_info DB_INFO; -struct __db_lock_stat; typedef struct __db_lock_stat DB_LOCK_STAT; -struct __db_lockregion; typedef struct __db_lockregion DB_LOCKREGION; -struct __db_lockreq; typedef struct __db_lockreq DB_LOCKREQ; -struct __db_locktab; typedef struct __db_locktab DB_LOCKTAB; -struct __db_log; typedef struct __db_log DB_LOG; -struct __db_log_stat; typedef struct __db_log_stat DB_LOG_STAT; -struct __db_lsn; typedef struct __db_lsn DB_LSN; -struct __db_mpool; typedef struct __db_mpool DB_MPOOL; -struct __db_mpool_finfo;typedef struct __db_mpool_finfo DB_MPOOL_FINFO; -struct __db_mpool_fstat;typedef struct __db_mpool_fstat DB_MPOOL_FSTAT; -struct __db_mpool_stat; typedef struct __db_mpool_stat DB_MPOOL_STAT; -struct __db_mpoolfile; typedef struct __db_mpoolfile DB_MPOOLFILE; -struct __db_txn; typedef struct __db_txn DB_TXN; -struct __db_txn_active; typedef struct __db_txn_active DB_TXN_ACTIVE; -struct __db_txn_stat; typedef struct __db_txn_stat DB_TXN_STAT; -struct __db_txnmgr; typedef struct __db_txnmgr DB_TXNMGR; -struct __db_txnregion; typedef struct __db_txnregion DB_TXNREGION; -struct __dbc; typedef struct __dbc DBC; - -/* Key/data structure -- a Data-Base Thang. */ -struct __db_dbt { - void *data; /* key/data */ - u_int32_t size; /* key/data length */ - u_int32_t ulen; /* RO: length of user buffer. */ - u_int32_t dlen; /* RO: get/put record length. */ - u_int32_t doff; /* RO: get/put record offset. */ - -#define DB_DBT_INTERNAL 0x01 /* Ignore user's malloc (internal). */ -#define DB_DBT_MALLOC 0x02 /* Return in allocated memory. */ -#define DB_DBT_PARTIAL 0x04 /* Partial put/get. */ -#define DB_DBT_USERMEM 0x08 /* Return in user's memory. */ - u_int32_t flags; -}; - -/* - * DB run-time interface configuration. - * - * There are a set of functions that the application can replace with its - * own versions, and some other knobs which can be turned at run-time. - */ -#define DB_FUNC_CLOSE 1 /* POSIX 1003.1 close. */ -#define DB_FUNC_DIRFREE 2 /* DB: free directory list. */ -#define DB_FUNC_DIRLIST 3 /* DB: create directory list. */ -#define DB_FUNC_EXISTS 4 /* DB: return if file exists. */ -#define DB_FUNC_FREE 5 /* ANSI C free. */ -#define DB_FUNC_FSYNC 6 /* POSIX 1003.1 fsync. */ -#define DB_FUNC_IOINFO 7 /* DB: return file I/O information. */ -#define DB_FUNC_MALLOC 8 /* ANSI C malloc. */ -#define DB_FUNC_MAP 9 /* DB: map file into shared memory. */ -#define DB_FUNC_OPEN 10 /* POSIX 1003.1 open. */ -#define DB_FUNC_READ 11 /* POSIX 1003.1 read. */ -#define DB_FUNC_REALLOC 12 /* ANSI C realloc. */ -#define DB_FUNC_RUNLINK 13 /* DB: remove a shared region. */ -#define DB_FUNC_SEEK 14 /* POSIX 1003.1 lseek. */ -#define DB_FUNC_SLEEP 15 /* DB: sleep secs/usecs. */ -#define DB_FUNC_UNLINK 16 /* POSIX 1003.1 unlink. */ -#define DB_FUNC_UNMAP 17 /* DB: unmap shared memory file. */ -#define DB_FUNC_WRITE 18 /* POSIX 1003.1 write. */ -#define DB_FUNC_YIELD 19 /* DB: yield thread to scheduler. */ -#define DB_MUTEXLOCKS 20 /* DB: turn off all mutex locks. */ -#define DB_PAGEYIELD 21 /* DB: yield the CPU on pool get. */ -#define DB_REGION_ANON 22 /* DB: anonymous, unnamed regions. */ -#define DB_REGION_INIT 23 /* DB: page-fault regions in create. */ -#define DB_REGION_NAME 24 /* DB: anonymous, named regions. */ -#define DB_TSL_SPINS 25 /* DB: initialize spin count. */ - -/* - * Database configuration and initialization. - */ - /* - * Flags understood by both db_open(3) and db_appinit(3). - */ -#define DB_CREATE 0x000001 /* O_CREAT: create file as necessary. */ -#define DB_NOMMAP 0x000002 /* Don't mmap underlying file. */ -#define DB_THREAD 0x000004 /* Free-thread DB package handles. */ - -/* - * Flags understood by db_appinit(3). - */ -/* 0x000007 COMMON MASK. */ -#define DB_INIT_CDB 0x000008 /* Concurrent Access Methods. */ -#define DB_INIT_LOCK 0x000010 /* Initialize locking. */ -#define DB_INIT_LOG 0x000020 /* Initialize logging. */ -#define DB_INIT_MPOOL 0x000040 /* Initialize mpool. */ -#define DB_INIT_TXN 0x000080 /* Initialize transactions. */ -#define DB_MPOOL_PRIVATE 0x000100 /* Mpool: private memory pool. */ -#define DB_RECOVER 0x000200 /* Run normal recovery. */ -#define DB_RECOVER_FATAL 0x000400 /* Run catastrophic recovery. */ -#define DB_TXN_NOSYNC 0x000800 /* Do not sync log on commit. */ -#define DB_USE_ENVIRON 0x001000 /* Use the environment. */ -#define DB_USE_ENVIRON_ROOT 0x002000 /* Use the environment if root. */ - -/* - * Flags understood by db_open(3). - * - * DB_EXCL and DB_TEMPORARY are internal only, and are not documented. - * DB_SEQUENTIAL is currently internal, but may be exported some day. - */ -/* 0x000007 COMMON MASK. */ -/* 0x001fff ALREADY USED. */ -#define DB_EXCL 0x002000 /* O_EXCL: exclusive open (internal). */ -#define DB_RDONLY 0x004000 /* O_RDONLY: read-only. */ -#define DB_SEQUENTIAL 0x008000 /* Sequential access (internal). */ -#define DB_TEMPORARY 0x010000 /* Remove on last close (internal). */ -#define DB_TRUNCATE 0x020000 /* O_TRUNCATE: replace existing DB. */ - -/* - * Deadlock detector modes; used in the DBENV structure to configure the - * locking subsystem. - */ -#define DB_LOCK_NORUN 0 -#define DB_LOCK_DEFAULT 1 /* Default policy. */ -#define DB_LOCK_OLDEST 2 /* Abort oldest transaction. */ -#define DB_LOCK_RANDOM 3 /* Abort random transaction. */ -#define DB_LOCK_YOUNGEST 4 /* Abort youngest transaction. */ - -struct __db_env { - int db_lorder; /* Byte order. */ - - /* Error message callback. */ - void (*db_errcall) (const char *, char *); - FILE *db_errfile; /* Error message file stream. */ - const char *db_errpfx; /* Error message prefix. */ - int db_verbose; /* Generate debugging messages. */ - int db_panic; /* Panic flag, callback function. */ - void (*db_paniccall) (DB_ENV *, int); - - /* User paths. */ - char *db_home; /* Database home. */ - char *db_log_dir; /* Database log file directory. */ - char *db_tmp_dir; /* Database tmp file directory. */ - - char **db_data_dir; /* Database data file directories. */ - int data_cnt; /* Database data file slots. */ - int data_next; /* Next Database data file slot. */ - - /* Locking. */ - DB_LOCKTAB *lk_info; /* Return from lock_open(). */ - const u_int8_t *lk_conflicts; /* Two dimensional conflict matrix. */ - u_int32_t lk_modes; /* Number of lock modes in table. */ - u_int32_t lk_max; /* Maximum number of locks. */ - u_int32_t lk_detect; /* Deadlock detect on all conflicts. */ - - /* Logging. */ - DB_LOG *lg_info; /* Return from log_open(). */ - u_int32_t lg_max; /* Maximum file size. */ - - /* Memory pool. */ - DB_MPOOL *mp_info; /* Return from memp_open(). */ - size_t mp_mmapsize; /* Maximum file size for mmap. */ - size_t mp_size; /* Bytes in the mpool cache. */ - - /* Transactions. */ - DB_TXNMGR *tx_info; /* Return from txn_open(). */ - u_int32_t tx_max; /* Maximum number of transactions. */ - int (*tx_recover) /* Dispatch function for recovery. */ - (DB_LOG *, DBT *, DB_LSN *, int, void *); - - /* - * XA support. - * - * !!! - * Explicit representations of structures in queue.h. - * - * TAILQ_ENTRY(__db_env); - */ - struct { - struct __db_env *tqe_next; - struct __db_env **tqe_prev; - } links; - int xa_rmid; /* XA Resource Manager ID. */ - DB_TXN *xa_txn; /* XA Current transaction. */ - -#define DB_ENV_APPINIT 0x01 /* Paths initialized by db_appinit(). */ -#define DB_ENV_CDB 0x02 /* Concurrent DB product. */ -#define DB_ENV_STANDALONE 0x04 /* Test: freestanding environment. */ -#define DB_ENV_THREAD 0x08 /* DB_ENV is multi-threaded. */ - u_int32_t flags; /* Flags. */ -}; - -/******************************************************* - * Access methods. - *******************************************************/ -/* - * !!! - * Changes here must be reflected in java/src/com/sleepycat/db/Db.java. - */ -typedef enum { - DB_BTREE=1, /* B+tree. */ - DB_HASH, /* Extended Linear Hashing. */ - DB_RECNO, /* Fixed and variable-length records. */ - DB_UNKNOWN /* Figure it out on open. */ -} DBTYPE; - -#define DB_BTREEVERSION 6 /* Current btree version. */ -#define DB_BTREEOLDVER 6 /* Oldest btree version supported. */ -#define DB_BTREEMAGIC 0x053162 - -#define DB_HASHVERSION 5 /* Current hash version. */ -#define DB_HASHOLDVER 4 /* Oldest hash version supported. */ -#define DB_HASHMAGIC 0x061561 - -#define DB_LOGVERSION 2 /* Current log version. */ -#define DB_LOGOLDVER 2 /* Oldest log version supported. */ -#define DB_LOGMAGIC 0x040988 - -struct __db_info { - int db_lorder; /* Byte order. */ - size_t db_cachesize; /* Underlying cache size. */ - size_t db_pagesize; /* Underlying page size. */ - - /* Local heap allocation. */ - void *(*db_malloc) (size_t); - int (*dup_compare) /* Duplicate compare function. */ - (const DBT *, const DBT *); - - /* Btree access method. */ - u_int32_t bt_maxkey; /* Maximum keys per page. */ - u_int32_t bt_minkey; /* Minimum keys per page. */ - int (*bt_compare) /* Comparison function. */ - (const DBT *, const DBT *); - size_t (*bt_prefix) /* Prefix function. */ - (const DBT *, const DBT *); - - /* Hash access method. */ - u_int32_t h_ffactor; /* Fill factor. */ - u_int32_t h_nelem; /* Number of elements. */ - u_int32_t (*h_hash) /* Hash function. */ - (const void *, u_int32_t); - - /* Recno access method. */ - int re_pad; /* Fixed-length padding byte. */ - int re_delim; /* Variable-length delimiting byte. */ - u_int32_t re_len; /* Length for fixed-length records. */ - char *re_source; /* Source file name. */ - -#define DB_DELIMITER 0x0001 /* Recno: re_delim set. */ -#define DB_DUP 0x0002 /* Btree, Hash: duplicate keys. */ -#define DB_DUPSORT 0x0004 /* Btree, Hash: duplicate keys. */ -#define DB_FIXEDLEN 0x0008 /* Recno: fixed-length records. */ -#define DB_PAD 0x0010 /* Recno: re_pad set. */ -#define DB_RECNUM 0x0020 /* Btree: record numbers. */ -#define DB_RENUMBER 0x0040 /* Recno: renumber on insert/delete. */ -#define DB_SNAPSHOT 0x0080 /* Recno: snapshot the input. */ - u_int32_t flags; -}; - -/* - * DB access method and cursor operation values. Each value is an operation - * code to which additional bit flags are added. - */ -#define DB_AFTER 1 /* c_put() */ -#define DB_APPEND 2 /* put() */ -#define DB_BEFORE 3 /* c_put() */ -#define DB_CHECKPOINT 4 /* log_put(), log_get() */ -#define DB_CURLSN 5 /* log_put() */ -#define DB_CURRENT 6 /* c_get(), c_put(), log_get() */ -#define DB_FIRST 7 /* c_get(), log_get() */ -#define DB_FLUSH 8 /* log_put() */ -#define DB_GET_BOTH 9 /* get(), c_get() */ -#define DB_GET_RECNO 10 /* c_get() */ -#define DB_JOIN_ITEM 11 /* c_get(); do not do primary lookup */ -#define DB_KEYFIRST 12 /* c_put() */ -#define DB_KEYLAST 13 /* c_put() */ -#define DB_LAST 14 /* c_get(), log_get() */ -#define DB_NEXT 15 /* c_get(), log_get() */ -#define DB_NEXT_DUP 16 /* c_get() */ -#define DB_NOOVERWRITE 17 /* put() */ -#define DB_NOSYNC 18 /* close() */ -#define DB_PREV 19 /* c_get(), log_get() */ -#define DB_RECORDCOUNT 20 /* stat() */ -#define DB_SET 21 /* c_get(), log_get() */ -#define DB_SET_RANGE 22 /* c_get() */ -#define DB_SET_RECNO 23 /* get(), c_get() */ -#define DB_WRITELOCK 24 /* cursor() (internal) */ - -#define DB_OPFLAGS_MASK 0x1f /* Mask for operations flags. */ -#define DB_RMW 0x80000000 /* Acquire write flag immediately. */ - -/* - * DB (user visible) error return codes. - * - * !!! - * Changes to any of the user visible error return codes must be reflected - * in java/src/com/sleepycat/db/Db.java. - */ -#define DB_INCOMPLETE ( -1) /* Sync didn't finish. */ -#define DB_KEYEMPTY ( -2) /* The key/data pair was deleted or - was never created by the user. */ -#define DB_KEYEXIST ( -3) /* The key/data pair already exists. */ -#define DB_LOCK_DEADLOCK ( -4) /* Locker killed to resolve deadlock. */ -#define DB_LOCK_NOTGRANTED ( -5) /* Lock unavailable, no-wait set. */ -#define DB_LOCK_NOTHELD ( -6) /* Lock not held by locker. */ -#define DB_NOTFOUND ( -7) /* Key/data pair not found (EOF). */ -#define DB_RUNRECOVERY ( -8) /* Panic return. */ - -/* DB (private) error return codes. */ -#define DB_DELETED ( -9) /* Recovery file marked deleted. */ -#define DB_NEEDSPLIT (-10) /* Page needs to be split. */ -#define DB_SWAPBYTES (-11) /* Database needs byte swapping. */ -#define DB_TXN_CKP (-12) /* Encountered ckp record in log. */ - -#define DB_FILE_ID_LEN 20 /* DB file ID length. */ - -/* DB access method description structure. */ -struct __db { - void *mutexp; /* Synchronization for free threading */ - - /* Documented, returned information. */ - DBTYPE type; /* DB access method. */ - int byteswapped; /* Database byte order is swapped. */ - - DB_ENV *dbenv; /* DB_ENV structure. */ - DB_ENV *mp_dbenv; /* DB_ENV for local mpool creation. */ - - void *internal; /* Access method private. */ - - DB_MPOOL *mp; /* The access method's mpool. */ - DB_MPOOLFILE *mpf; /* The access method's mpool file. */ - - /* - * !!! - * Explicit representations of structures in queue.h. - * - * TAILQ_HEAD(free_queue, __dbc); - * TAILQ_HEAD(active_queue, __dbc); - */ - struct { - struct __dbc *tqh_first; - struct __dbc **tqh_last; - } free_queue; - struct { - struct __dbc *tqh_first; - struct __dbc **tqh_last; - } active_queue; - - u_int8_t fileid[DB_FILE_ID_LEN]; /* Uniquely identify this file for - locking. */ - u_int32_t log_fileid; /* Logging file id. */ - size_t pgsize; /* Logical page size of file. */ - - /* Local heap allocation. */ - void *(*db_malloc) (size_t); - int (*dup_compare) /* Duplicate compare function. */ - (const DBT *, const DBT *); - u_int32_t (*h_hash) /* Hash function. */ - (const void *, u_int32_t); - - /* Functions. */ - int (*am_close) (DB *); - int (*close) (DB *, u_int32_t); - int (*cursor) (DB *, DB_TXN *, DBC **, u_int32_t); - int (*del) (DB *, DB_TXN *, DBT *, u_int32_t); - int (*fd) (DB *, int *); - int (*get) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t); - int (*join) (DB *, DBC **, u_int32_t, DBC **); - int (*put) (DB *, DB_TXN *, DBT *, DBT *, u_int32_t); - int (*stat) (DB *, void *, void *(*)(size_t), u_int32_t); - int (*sync) (DB *, u_int32_t); - -#define DB_AM_CDB 0x000001 /* Concurrent Access Methods. */ -#define DB_AM_DUP 0x000002 /* DB_DUP (internal). */ -#define DB_AM_INMEM 0x000004 /* In-memory; no sync on close. */ -#define DB_AM_LOCKING 0x000008 /* Perform locking. */ -#define DB_AM_LOGGING 0x000010 /* Perform logging. */ -#define DB_AM_MLOCAL 0x000020 /* Database memory pool is local. */ -#define DB_AM_PGDEF 0x000040 /* Page size was defaulted. */ -#define DB_AM_RDONLY 0x000080 /* Database is readonly. */ -#define DB_AM_SWAP 0x000100 /* Pages need to be byte-swapped. */ -#define DB_AM_THREAD 0x000200 /* DB is multi-threaded. */ -#define DB_BT_RECNUM 0x000400 /* DB_RECNUM (internal). */ -#define DB_DBM_ERROR 0x000800 /* Error in DBM/NDBM database. */ -#define DB_RE_DELIMITER 0x001000 /* DB_DELIMITER (internal). */ -#define DB_RE_FIXEDLEN 0x002000 /* DB_FIXEDLEN (internal). */ -#define DB_RE_PAD 0x004000 /* DB_PAD (internal). */ -#define DB_RE_RENUMBER 0x008000 /* DB_RENUMBER (internal). */ -#define DB_RE_SNAPSHOT 0x010000 /* DB_SNAPSHOT (internal). */ - u_int32_t flags; -}; - -struct __db_ilock { /* Internal DB access method lock. */ - db_pgno_t pgno; /* Page being locked. */ - u_int8_t fileid[DB_FILE_ID_LEN];/* File id. */ -}; - -/* Cursor description structure. */ -struct __dbc { - DB *dbp; /* Related DB access method. */ - DB_TXN *txn; /* Associated transaction. */ - - /* - * !!! - * Explicit representations of structures in queue.h. - * - * TAILQ_ENTRY(__dbc); - */ - struct { - struct __dbc *tqe_next; - struct __dbc **tqe_prev; - } links; - - u_int32_t lid; /* Default process' locker id. */ - u_int32_t locker; /* Locker for this operation. */ - DBT lock_dbt; /* DBT referencing lock. */ - DB_LOCK_ILOCK lock; /* Object to be locked. */ - DB_LOCK mylock; /* Lock held on this cursor. */ - - DBT rkey; /* Returned key. */ - DBT rdata; /* Returned data. */ - - int (*c_am_close) (DBC *); - int (*c_am_destroy) (DBC *); - int (*c_close) (DBC *); - int (*c_del) (DBC *, u_int32_t); - int (*c_get) (DBC *, DBT *, DBT *, u_int32_t); - int (*c_put) (DBC *, DBT *, DBT *, u_int32_t); - - void *internal; /* Access method private. */ - -#define DBC_CONTINUE 0x001 /* Continue dup search: next item. */ -#define DBC_KEYSET 0x002 /* Continue dup search: current item. */ -#define DBC_RECOVER 0x004 /* In recovery (do not log or lock). */ -#define DBC_RMW 0x008 /* Acquire write flag in read op. */ -#define DBC_WRITER 0x010 /* Cursor immediately writing (CDB). */ - u_int32_t flags; -}; - -/* Btree/recno statistics structure. */ -struct __db_bt_stat { - u_int32_t bt_flags; /* Open flags. */ - u_int32_t bt_maxkey; /* Maxkey value. */ - u_int32_t bt_minkey; /* Minkey value. */ - u_int32_t bt_re_len; /* Fixed-length record length. */ - u_int32_t bt_re_pad; /* Fixed-length record pad. */ - u_int32_t bt_pagesize; /* Page size. */ - u_int32_t bt_levels; /* Tree levels. */ - u_int32_t bt_nrecs; /* Number of records. */ - u_int32_t bt_int_pg; /* Internal pages. */ - u_int32_t bt_leaf_pg; /* Leaf pages. */ - u_int32_t bt_dup_pg; /* Duplicate pages. */ - u_int32_t bt_over_pg; /* Overflow pages. */ - u_int32_t bt_free; /* Pages on the free list. */ - u_int32_t bt_int_pgfree; /* Bytes free in internal pages. */ - u_int32_t bt_leaf_pgfree; /* Bytes free in leaf pages. */ - u_int32_t bt_dup_pgfree; /* Bytes free in duplicate pages. */ - u_int32_t bt_over_pgfree; /* Bytes free in overflow pages. */ - u_int32_t bt_magic; /* Magic number. */ - u_int32_t bt_version; /* Version number. */ -}; - -/* Hash statistics structure. */ -struct __db_h_stat { - u_int32_t hash_accesses; /* Number of accesses to this table. */ - u_int32_t hash_collisions; /* Number of collisions on search. */ - u_int32_t hash_expansions; /* Number of times we added a bucket. */ - u_int32_t hash_overflows; /* Number of overflow pages. */ - u_int32_t hash_bigpages; /* Number of big key/data pages. */ - u_int32_t hash_dup; /* Number of dup pages. */ - u_int32_t hash_free; /* Pages on the free list. */ - u_int32_t hash_bfree; /* Bytes free on bucket pages. */ - u_int32_t hash_dup_free; /* Bytes free on duplicate pages. */ - u_int32_t hash_big_bfree; /* Bytes free on big item pages. */ - u_int32_t hash_buckets; /* Number of hash buckets. */ - u_int32_t hash_put; /* Number of puts. */ - u_int32_t hash_deleted; /* Number of deletes. */ - u_int32_t hash_get; /* Number of gets. */ - u_int32_t hash_magic; /* Magic number. */ - u_int32_t hash_version; /* Version number. */ - u_int32_t hash_pagesize; /* Page size. */ - u_int32_t hash_nrecs; /* Number of records. */ -}; - -#if defined(__cplusplus) -extern "C" { -#endif -int db_appinit (const char *, char * const *, DB_ENV *, u_int32_t); -int db_appexit (DB_ENV *); -int db_jump_set (void *, int); -int db_open (const char *, - DBTYPE, u_int32_t, int, DB_ENV *, DB_INFO *, DB **); -int db_value_set (int, int); -char *db_version (int *, int *, int *); -int db_xa_open (const char *, DBTYPE, u_int32_t, int, DB_INFO *, DB **); -#if defined(__cplusplus) -} -#endif - -/******************************************************* - * Locking - *******************************************************/ -#define DB_LOCKVERSION 1 -#define DB_LOCKMAGIC 0x090193 - -/* Flag values for lock_vec(), lock_get(). */ -#define DB_LOCK_NOWAIT 0x01 /* Don't wait on unavailable lock. */ -#define DB_LOCK_UPGRADE 0x02 /* Upgrade an existing lock instead - of granting a new one (internal). */ - -/* Flag values for lock_detect(). */ -#define DB_LOCK_CONFLICT 0x01 /* Run on any conflict. */ - -/* - * Request types. - * - * !!! - * Changes here must be reflected in java/src/com/sleepycat/db/Db.java. - */ -typedef enum { - DB_LOCK_DUMP=0, /* Display held locks. */ - DB_LOCK_GET, /* Get the lock. */ - DB_LOCK_INHERIT, /* Pass locks to parent. */ - DB_LOCK_PUT, /* Release the lock. */ - DB_LOCK_PUT_ALL, /* Release locker's locks. */ - DB_LOCK_PUT_OBJ /* Release locker's locks on obj. */ -} db_lockop_t; - -/* - * Simple R/W lock modes and for multi-granularity intention locking. - * - * !!! - * These values are NOT random, as they are used as an index into the lock - * conflicts arrays, i.e., DB_LOCK_IWRITE must be == 3, and DB_LOCK_IREAD - * must be == 4. - * - * !!! - * Changes here must be reflected in java/src/com/sleepycat/db/Db.java. - */ -typedef enum { - DB_LOCK_NG=0, /* Not granted. */ - DB_LOCK_READ, /* Shared/read. */ - DB_LOCK_WRITE, /* Exclusive/write. */ - DB_LOCK_IWRITE, /* Intent exclusive/write. */ - DB_LOCK_IREAD, /* Intent to share/read. */ - DB_LOCK_IWR /* Intent to read and write. */ -} db_lockmode_t; - -/* - * Status of a lock. - */ -typedef enum { - DB_LSTAT_ABORTED, /* Lock belongs to an aborted txn. */ - DB_LSTAT_ERR, /* Lock is bad. */ - DB_LSTAT_FREE, /* Lock is unallocated. */ - DB_LSTAT_HELD, /* Lock is currently held. */ - DB_LSTAT_NOGRANT, /* Lock was not granted. */ - DB_LSTAT_PENDING, /* Lock was waiting and has been - * promoted; waiting for the owner - * to run and upgrade it to held. */ - DB_LSTAT_WAITING /* Lock is on the wait queue. */ -} db_status_t; - -/* Lock request structure. */ -struct __db_lockreq { - db_lockop_t op; /* Operation. */ - db_lockmode_t mode; /* Requested mode. */ - u_int32_t locker; /* Locker identity. */ - DBT *obj; /* Object being locked. */ - DB_LOCK lock; /* Lock returned. */ -}; - -/* - * Commonly used conflict matrices. - * - * Standard Read/Write (or exclusive/shared) locks. - */ -#define DB_LOCK_RW_N 3 -extern const u_int8_t db_rw_conflicts[]; - -/* Multi-granularity locking. */ -#define DB_LOCK_RIW_N 6 -extern const u_int8_t db_riw_conflicts[]; - -struct __db_lock_stat { - u_int32_t st_magic; /* Lock file magic number. */ - u_int32_t st_version; /* Lock file version number. */ - u_int32_t st_maxlocks; /* Maximum number of locks in table. */ - u_int32_t st_nmodes; /* Number of lock modes. */ - u_int32_t st_numobjs; /* Number of objects. */ - u_int32_t st_nlockers; /* Number of lockers. */ - u_int32_t st_nconflicts; /* Number of lock conflicts. */ - u_int32_t st_nrequests; /* Number of lock gets. */ - u_int32_t st_nreleases; /* Number of lock puts. */ - u_int32_t st_ndeadlocks; /* Number of lock deadlocks. */ - u_int32_t st_region_wait; /* Region lock granted after wait. */ - u_int32_t st_region_nowait; /* Region lock granted without wait. */ - u_int32_t st_refcnt; /* Region reference count. */ - u_int32_t st_regsize; /* Region size. */ -}; - -#if defined(__cplusplus) -extern "C" { -#endif -int lock_close (DB_LOCKTAB *); -int lock_detect (DB_LOCKTAB *, u_int32_t, u_int32_t); |