1/*- 2 * See the file LICENSE for redistribution information. 3 * 4 * Copyright (c) 1996, 1997, 1998 5 * Sleepycat Software. All rights reserved. 6 * 7 * @(#)db.h 10.174 (Sleepycat) 1/3/99 8 */ 9 10#ifndef _DB_H_ 11#define _DB_H_ 12 13#ifndef __NO_SYSTEM_INCLUDES 14#include <sys/types.h> 15 16#include <stdio.h> 17#endif 18 19/* 20 * XXX 21 * MacOS: ensure that Metrowerks C makes enumeration types int sized. 22 */ 23#ifdef __MWERKS__ 24#pragma enumsalwaysint on 25#endif 26 27/* 28 * XXX 29 * Handle function prototypes and the keyword "const". This steps on name 30 * space that DB doesn't control, but all of the other solutions are worse. 31 * 32 * XXX 33 * While Microsoft's compiler is ANSI C compliant, it doesn't have _STDC_ 34 * defined by default, you specify a command line flag or #pragma to turn 35 * it on. Don't do that, however, because some of Microsoft's own header 36 * files won't compile. 37 */ 38#undef __P 39#if defined(__STDC__) || defined(__cplusplus) || defined(_MSC_VER) 40#define __P(protos) protos /* ANSI C prototypes */ 41#else 42#define const 43#define __P(protos) () /* K&R C preprocessor */ 44#endif 45 46/* 47 * !!! 48 * DB needs basic information about specifically sized types. If they're 49 * not provided by the system, typedef them here. 50 * 51 * We protect them against multiple inclusion using __BIT_TYPES_DEFINED__, 52 * as does BIND and Kerberos, since we don't know for sure what #include 53 * files the user is using. 54 * 55 * !!! 56 * We also provide the standard u_int, u_long etc., if they're not provided 57 * by the system. 58 */ 59#ifndef __BIT_TYPES_DEFINED__ 60#define __BIT_TYPES_DEFINED__ 61typedef unsigned char u_int8_t; 62 63typedef unsigned short u_int16_t; 64 65typedef unsigned int u_int32_t; 66#endif 67 68 69 70 71 72 73#define DB_VERSION_MAJOR 2 74#define DB_VERSION_MINOR 7 75#define DB_VERSION_PATCH 7 76#define DB_VERSION_STRING "Sleepycat Software: Berkeley DB 2.7.7: (08/20/99)" 77 78typedef u_int32_t db_pgno_t; /* Page number type. */ 79typedef u_int16_t db_indx_t; /* Page offset type. */ 80#define DB_MAX_PAGES 0xffffffff /* >= # of pages in a file */ 81 82typedef u_int32_t db_recno_t; /* Record number type. */ 83#define DB_MAX_RECORDS 0xffffffff /* >= # of records in a tree */ 84 85typedef size_t DB_LOCK; /* Object returned by lock manager. */ 86 87/* Forward structure declarations, so applications get type checking. */ 88struct __db; typedef struct __db DB; 89#ifdef DB_DBM_HSEARCH 90 typedef struct __db DBM; 91#endif 92struct __db_bt_stat; typedef struct __db_bt_stat DB_BTREE_STAT; 93struct __db_dbt; typedef struct __db_dbt DBT; 94struct __db_env; typedef struct __db_env DB_ENV; 95struct __db_ilock; typedef struct __db_ilock DB_LOCK_ILOCK; 96struct __db_info; typedef struct __db_info DB_INFO; 97struct __db_lock_stat; typedef struct __db_lock_stat DB_LOCK_STAT; 98struct __db_lockregion; typedef struct __db_lockregion DB_LOCKREGION; 99struct __db_lockreq; typedef struct __db_lockreq DB_LOCKREQ; 100struct __db_locktab; typedef struct __db_locktab DB_LOCKTAB; 101struct __db_log; typedef struct __db_log DB_LOG; 102struct __db_log_stat; typedef struct __db_log_stat DB_LOG_STAT; 103struct __db_lsn; typedef struct __db_lsn DB_LSN; 104struct __db_mpool; typedef struct __db_mpool DB_MPOOL; 105struct __db_mpool_finfo;typedef struct __db_mpool_finfo DB_MPOOL_FINFO; 106struct __db_mpool_fstat;typedef struct __db_mpool_fstat DB_MPOOL_FSTAT; 107struct __db_mpool_stat; typedef struct __db_mpool_stat DB_MPOOL_STAT; 108struct __db_mpoolfile; typedef struct __db_mpoolfile DB_MPOOLFILE; 109struct __db_txn; typedef struct __db_txn DB_TXN; 110struct __db_txn_active; typedef struct __db_txn_active DB_TXN_ACTIVE; 111struct __db_txn_stat; typedef struct __db_txn_stat DB_TXN_STAT; 112struct __db_txnmgr; typedef struct __db_txnmgr DB_TXNMGR; 113struct __db_txnregion; typedef struct __db_txnregion DB_TXNREGION; 114struct __dbc; typedef struct __dbc DBC; 115 116/* Key/data structure -- a Data-Base Thang. */ 117struct __db_dbt { 118 void *data; /* key/data */ 119 u_int32_t size; /* key/data length */ 120 u_int32_t ulen; /* RO: length of user buffer. */ 121 u_int32_t dlen; /* RO: get/put record length. */ 122 u_int32_t doff; /* RO: get/put record offset. */ 123 124#define DB_DBT_INTERNAL 0x01 /* Ignore user's malloc (internal). */ 125#define DB_DBT_MALLOC 0x02 /* Return in allocated memory. */ 126#define DB_DBT_PARTIAL 0x04 /* Partial put/get. */ 127#define DB_DBT_USERMEM 0x08 /* Return in user's memory. */ 128 u_int32_t flags; 129}; 130 131/* 132 * DB run-time interface configuration. 133 * 134 * There are a set of functions that the application can replace with its 135 * own versions, and some other knobs which can be turned at run-time. 136 */ 137#define DB_FUNC_CLOSE 1 /* POSIX 1003.1 close. */ 138#define DB_FUNC_DIRFREE 2 /* DB: free directory list. */ 139#define DB_FUNC_DIRLIST 3 /* DB: create directory list. */ 140#define DB_FUNC_EXISTS 4 /* DB: return if file exists. */ 141#define DB_FUNC_FREE 5 /* ANSI C free. */ 142#define DB_FUNC_FSYNC 6 /* POSIX 1003.1 fsync. */ 143#define DB_FUNC_IOINFO 7 /* DB: return file I/O information. */ 144#define DB_FUNC_MALLOC 8 /* ANSI C malloc. */ 145#define DB_FUNC_MAP 9 /* DB: map file into shared memory. */ 146#define DB_FUNC_OPEN 10 /* POSIX 1003.1 open. */ 147#define DB_FUNC_READ 11 /* POSIX 1003.1 read. */ 148#define DB_FUNC_REALLOC 12 /* ANSI C realloc. */ 149#define DB_FUNC_RUNLINK 13 /* DB: remove a shared region. */ 150#define DB_FUNC_SEEK 14 /* POSIX 1003.1 lseek. */ 151#define DB_FUNC_SLEEP 15 /* DB: sleep secs/usecs. */ 152#define DB_FUNC_UNLINK 16 /* POSIX 1003.1 unlink. */ 153#define DB_FUNC_UNMAP 17 /* DB: unmap shared memory file. */ 154#define DB_FUNC_WRITE 18 /* POSIX 1003.1 write. */ 155#define DB_FUNC_YIELD 19 /* DB: yield thread to scheduler. */ 156#define DB_MUTEXLOCKS 20 /* DB: turn off all mutex locks. */ 157#define DB_PAGEYIELD 21 /* DB: yield the CPU on pool get. */ 158#define DB_REGION_ANON 22 /* DB: anonymous, unnamed regions. */ 159#define DB_REGION_INIT 23 /* DB: page-fault regions in create. */ 160#define DB_REGION_NAME 24 /* DB: anonymous, named regions. */ 161#define DB_TSL_SPINS 25 /* DB: initialize spin count. */ 162 163/* 164 * Database configuration and initialization. 165 */ 166 /* 167 * Flags understood by both db_open(3) and db_appinit(3). 168 */ 169#define DB_CREATE 0x000001 /* O_CREAT: create file as necessary. */ 170#define DB_NOMMAP 0x000002 /* Don't mmap underlying file. */ 171#define DB_THREAD 0x000004 /* Free-thread DB package handles. */ 172 173/* 174 * Flags understood by db_appinit(3). 175 */ 176/* 0x000007 COMMON MASK. */ 177#define DB_INIT_CDB 0x000008 /* Concurrent Access Methods. */ 178#define DB_INIT_LOCK 0x000010 /* Initialize locking. */ 179#define DB_INIT_LOG 0x000020 /* Initialize logging. */ 180#define DB_INIT_MPOOL 0x000040 /* Initialize mpool. */ 181#define DB_INIT_TXN 0x000080 /* Initialize transactions. */ 182#define DB_MPOOL_PRIVATE 0x000100 /* Mpool: private memory pool. */ 183#define DB_RECOVER 0x000200 /* Run normal recovery. */ 184#define DB_RECOVER_FATAL 0x000400 /* Run catastrophic recovery. */ 185#define DB_TXN_NOSYNC 0x000800 /* Do not sync log on commit. */ 186#define DB_USE_ENVIRON 0x001000 /* Use the environment. */ 187#define DB_USE_ENVIRON_ROOT 0x002000 /* Use the environment if root. */ 188 189/* 190 * Flags understood by db_open(3). 191 * 192 * DB_EXCL and DB_TEMPORARY are internal only, and are not documented. 193 * DB_SEQUENTIAL is currently internal, but may be exported some day. 194 */ 195/* 0x000007 COMMON MASK. */ 196/* 0x001fff ALREADY USED. */ 197#define DB_EXCL 0x002000 /* O_EXCL: exclusive open (internal). */ 198#define DB_RDONLY 0x004000 /* O_RDONLY: read-only. */ 199#define DB_SEQUENTIAL 0x008000 /* Sequential access (internal). */ 200#define DB_TEMPORARY 0x010000 /* Remove on last close (internal). */ 201#define DB_TRUNCATE 0x020000 /* O_TRUNCATE: replace existing DB. */ 202#define DB_FCNTL_LOCKING 0x040000 /* Undocumented: fcntl(2) locking. */ 203 204/* 205 * Deadlock detector modes; used in the DBENV structure to configure the 206 * locking subsystem. 207 */ 208#define DB_LOCK_NORUN 0 209#define DB_LOCK_DEFAULT 1 /* Default policy. */ 210#define DB_LOCK_OLDEST 2 /* Abort oldest transaction. */ 211#define DB_LOCK_RANDOM 3 /* Abort random transaction. */ 212#define DB_LOCK_YOUNGEST 4 /* Abort youngest transaction. */ 213 214struct __db_env { 215 int db_lorder; /* Byte order. */ 216 217 /* Error message callback. */ 218 void (*db_errcall) __P((const char *, char *)); 219 FILE *db_errfile; /* Error message file stream. */ 220 const char *db_errpfx; /* Error message prefix. */ 221 int db_verbose; /* Generate debugging messages. */ 222 int db_panic; /* Panic flag, callback function. */ 223 void (*db_paniccall) __P((DB_ENV *, int)); 224 225 /* User paths. */ 226 char *db_home; /* Database home. */ 227 char *db_log_dir; /* Database log file directory. */ 228 char *db_tmp_dir; /* Database tmp file directory. */ 229 230 char **db_data_dir; /* Database data file directories. */ 231 int data_cnt; /* Database data file slots. */ 232 int data_next; /* Next Database data file slot. */ 233 234 /* Locking. */ 235 DB_LOCKTAB *lk_info; /* Return from lock_open(). */ 236 const u_int8_t *lk_conflicts; /* Two dimensional conflict matrix. */ 237 u_int32_t lk_modes; /* Number of lock modes in table. */ 238 u_int32_t lk_max; /* Maximum number of locks. */ 239 u_int32_t lk_detect; /* Deadlock detect on all conflicts. */ 240 241 /* Logging. */ 242 DB_LOG *lg_info; /* Return from log_open(). */ 243 u_int32_t lg_max; /* Maximum file size. */ 244 245 /* Memory pool. */ 246 DB_MPOOL *mp_info; /* Return from memp_open(). */ 247 size_t mp_mmapsize; /* Maximum file size for mmap. */ 248 size_t mp_size; /* Bytes in the mpool cache. */ 249 250 /* Transactions. */ 251 DB_TXNMGR *tx_info; /* Return from txn_open(). */ 252 u_int32_t tx_max; /* Maximum number of transactions. */ 253 int (*tx_recover) /* Dispatch function for recovery. */ 254 __P((DB_LOG *, DBT *, DB_LSN *, int, void *)); 255 256 /* 257 * XA support. 258 * 259 * !!! 260 * Explicit representations of structures in queue.h. 261 * 262 * TAILQ_ENTRY(__db_env); 263 */ 264 struct { 265 struct __db_env *tqe_next; 266 struct __db_env **tqe_prev; 267 } links; 268 int xa_rmid; /* XA Resource Manager ID. */ 269 DB_TXN *xa_txn; /* XA Current transaction. */ 270 271#define DB_ENV_APPINIT 0x01 /* Paths initialized by db_appinit(). */ 272#define DB_ENV_CDB 0x02 /* Concurrent DB product. */ 273#define DB_ENV_STANDALONE 0x04 /* Test: freestanding environment. */ 274#define DB_ENV_THREAD 0x08 /* DB_ENV is multi-threaded. */ 275 u_int32_t flags; /* Flags. */ 276}; 277 278/******************************************************* 279 * Access methods. 280 *******************************************************/ 281/* 282 * !!! 283 * Changes here must be reflected in java/src/com/sleepycat/db/Db.java. 284 */ 285typedef enum { 286 DB_BTREE=1, /* B+tree. */ 287 DB_HASH, /* Extended Linear Hashing. */ 288 DB_RECNO, /* Fixed and variable-length records. */ 289 DB_UNKNOWN /* Figure it out on open. */ 290} DBTYPE; 291 292#define DB_BTREEVERSION 6 /* Current btree version. */ 293#define DB_BTREEOLDVER 6 /* Oldest btree version supported. */ 294#define DB_BTREEMAGIC 0x053162 295 296#define DB_HASHVERSION 5 /* Current hash version. */ 297#define DB_HASHOLDVER 4 /* Oldest hash version supported. */ 298#define DB_HASHMAGIC 0x061561 299 300#define DB_LOGVERSION 2 /* Current log version. */ 301#define DB_LOGOLDVER 2 /* Oldest log version supported. */ 302#define DB_LOGMAGIC 0x040988 303 304struct __db_info { 305 int db_lorder; /* Byte order. */ 306 size_t db_cachesize; /* Underlying cache size. */ 307 size_t db_pagesize; /* Underlying page size. */ 308 309 /* Local heap allocation. */ 310 void *(*db_malloc) __P((size_t)); 311 int (*dup_compare) /* Duplicate compare function. */ 312 __P((const DBT *, const DBT *)); 313 314 /* Btree access method. */ 315 u_int32_t bt_maxkey; /* Maximum keys per page. */ 316 u_int32_t bt_minkey; /* Minimum keys per page. */ 317 int (*bt_compare) /* Comparison function. */ 318 __P((const DBT *, const DBT *)); 319 size_t (*bt_prefix) /* Prefix function. */ 320 __P((const DBT *, const DBT *)); 321 322 /* Hash access method. */ 323 u_int32_t h_ffactor; /* Fill factor. */ 324 u_int32_t h_nelem; /* Number of elements. */ 325 u_int32_t (*h_hash) /* Hash function. */ 326 __P((const void *, u_int32_t)); 327 328 /* Recno access method. */ 329 int re_pad; /* Fixed-length padding byte. */ 330 int re_delim; /* Variable-length delimiting byte. */ 331 u_int32_t re_len; /* Length for fixed-length records. */ 332 char *re_source; /* Source file name. */ 333 334#define DB_DELIMITER 0x0001 /* Recno: re_delim set. */ 335#define DB_DUP 0x0002 /* Btree, Hash: duplicate keys. */ 336#define DB_DUPSORT 0x0004 /* Btree, Hash: duplicate keys. */ 337#define DB_FIXEDLEN 0x0008 /* Recno: fixed-length records. */ 338#define DB_PAD 0x0010 /* Recno: re_pad set. */ 339#define DB_RECNUM 0x0020 /* Btree: record numbers. */ 340#define DB_RENUMBER 0x0040 /* Recno: renumber on insert/delete. */ 341#define DB_SNAPSHOT 0x0080 /* Recno: snapshot the input. */ 342 u_int32_t flags; 343}; 344 345/* 346 * DB access method and cursor operation values. Each value is an operation 347 * code to which additional bit flags are added. 348 */ 349#define DB_AFTER 1 /* c_put() */ 350#define DB_APPEND 2 /* put() */ 351#define DB_BEFORE 3 /* c_put() */ 352#define DB_CHECKPOINT 4 /* log_put(), log_get() */ 353#define DB_CURLSN 5 /* log_put() */ 354#define DB_CURRENT 6 /* c_get(), c_put(), log_get() */ 355#define DB_FIRST 7 /* c_get(), log_get() */ 356#define DB_FLUSH 8 /* log_put() */ 357#define DB_GET_BOTH 9 /* get(), c_get() */ 358#define DB_GET_RECNO 10 /* c_get() */ 359#define DB_JOIN_ITEM 11 /* c_get(); do not do primary lookup */ 360#define DB_KEYFIRST 12 /* c_put() */ 361#define DB_KEYLAST 13 /* c_put() */ 362#define DB_LAST 14 /* c_get(), log_get() */ 363#define DB_NEXT 15 /* c_get(), log_get() */ 364#define DB_NEXT_DUP 16 /* c_get() */ 365#define DB_NOOVERWRITE 17 /* put() */ 366#define DB_NOSYNC 18 /* close() */ 367#define DB_PREV 19 /* c_get(), log_get() */ 368#define DB_RECORDCOUNT 20 /* stat() */ 369#define DB_SET 21 /* c_get(), log_get() */ 370#define DB_SET_RANGE 22 /* c_get() */ 371#define DB_SET_RECNO 23 /* get(), c_get() */ 372#define DB_WRITELOCK 24 /* cursor() (internal) */ 373 374#define DB_OPFLAGS_MASK 0x1f /* Mask for operations flags. */ 375#define DB_RMW 0x80000000 /* Acquire write flag immediately. */ 376 377/* 378 * DB (user visible) error return codes. 379 * 380 * !!! 381 * Changes to any of the user visible error return codes must be reflected 382 * in java/src/com/sleepycat/db/Db.java. 383 */ 384#define DB_INCOMPLETE ( -1) /* Sync didn't finish. */ 385#define DB_KEYEMPTY ( -2) /* The key/data pair was deleted or 386 was never created by the user. */ 387#define DB_KEYEXIST ( -3) /* The key/data pair already exists. */ 388#define DB_LOCK_DEADLOCK ( -4) /* Locker killed to resolve deadlock. */ 389#define DB_LOCK_NOTGRANTED ( -5) /* Lock unavailable, no-wait set. */ 390#define DB_LOCK_NOTHELD ( -6) /* Lock not held by locker. */ 391#define DB_NOTFOUND ( -7) /* Key/data pair not found (EOF). */ 392#define DB_RUNRECOVERY ( -8) /* Panic return. */ 393 394/* DB (private) error return codes. */ 395#define DB_DELETED ( -9) /* Recovery file marked deleted. */ 396#define DB_NEEDSPLIT (-10) /* Page needs to be split. */ 397#define DB_SWAPBYTES (-11) /* Database needs byte swapping. */ 398#define DB_TXN_CKP (-12) /* Encountered ckp record in log. */ 399 400#define DB_FILE_ID_LEN 20 /* DB file ID length. */ 401 402/* DB access method description structure. */ 403struct __db { 404 void *mutexp; /* Synchronization for free threading */ 405 406 /* Documented, returned information. */ 407 DBTYPE type; /* DB access method. */ 408 int byteswapped; /* Database byte order is swapped. */ 409 int saved_open_fd; /* For fcntl lock preservation. */ 410 411 DB_ENV *dbenv; /* DB_ENV structure. */ 412 DB_ENV *mp_dbenv; /* DB_ENV for local mpool creation. */ 413 414 void *internal; /* Access method private. */ 415 416 DB_MPOOL *mp; /* The access method's mpool. */ 417 DB_MPOOLFILE *mpf; /* The access method's mpool file. */ 418 419 /* 420 * !!! 421 * Explicit representations of structures in queue.h. 422 * 423 * TAILQ_HEAD(free_queue, __dbc); 424 * TAILQ_HEAD(active_queue, __dbc); 425 */ 426 struct { 427 struct __dbc *tqh_first; 428 struct __dbc **tqh_last; 429 } free_queue; 430 struct { 431 struct __dbc *tqh_first; 432 struct __dbc **tqh_last; 433 } active_queue; 434 435 u_int8_t fileid[DB_FILE_ID_LEN]; /* Uniquely identify this file for 436 locking. */ 437 u_int32_t log_fileid; /* Logging file id. */ 438 size_t pgsize; /* Logical page size of file. */ 439 440 /* Local heap allocation. */ 441 void *(*db_malloc) __P((size_t)); 442 int (*dup_compare) /* Duplicate compare function. */ 443 __P((const DBT *, const DBT *)); 444 u_int32_t (*h_hash) /* Hash function. */ 445 __P((const void *, u_int32_t)); 446 447 /* Functions. */ 448 int (*am_close) __P((DB *)); 449 int (*close) __P((DB *, u_int32_t)); 450 int (*cursor) __P((DB *, DB_TXN *, DBC **, u_int32_t)); 451 int (*del) __P((DB *, DB_TXN *, DBT *, u_int32_t)); 452 int (*fd) __P((DB *, int *)); 453 int (*get) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t)); 454 int (*join) __P((DB *, DBC **, u_int32_t, DBC **)); 455 int (*put) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t)); 456 int (*stat) __P((DB *, void *, void *(*)(size_t), u_int32_t)); 457 int (*sync) __P((DB *, u_int32_t)); 458 459#define DB_AM_CDB 0x000001 /* Concurrent Access Methods. */ 460#define DB_AM_DUP 0x000002 /* DB_DUP (internal). */ 461#define DB_AM_INMEM 0x000004 /* In-memory; no sync on close. */ 462#define DB_AM_LOCKING 0x000008 /* Perform locking. */ 463#define DB_AM_LOGGING 0x000010 /* Perform logging. */ 464#define DB_AM_MLOCAL 0x000020 /* Database memory pool is local. */ 465#define DB_AM_PGDEF 0x000040 /* Page size was defaulted. */ 466#define DB_AM_RDONLY 0x000080 /* Database is readonly. */ 467#define DB_AM_SWAP 0x000100 /* Pages need to be byte-swapped. */ 468#define DB_AM_THREAD 0x000200 /* DB is multi-threaded. */ 469#define DB_BT_RECNUM 0x000400 /* DB_RECNUM (internal). */ 470#define DB_DBM_ERROR 0x000800 /* Error in DBM/NDBM database. */ 471#define DB_RE_DELIMITER 0x001000 /* DB_DELIMITER (internal). */ 472#define DB_RE_FIXEDLEN 0x002000 /* DB_FIXEDLEN (internal). */ 473#define DB_RE_PAD 0x004000 /* DB_PAD (internal). */ 474#define DB_RE_RENUMBER 0x008000 /* DB_RENUMBER (internal). */ 475#define DB_RE_SNAPSHOT 0x010000 /* DB_SNAPSHOT (internal). */ 476 u_int32_t flags; 477}; 478 479struct __db_ilock { /* Internal DB access method lock. */ 480 db_pgno_t pgno; /* Page being locked. */ 481 u_int8_t fileid[DB_FILE_ID_LEN];/* File id. */ 482}; 483 484/* Cursor description structure. */ 485struct __dbc { 486 DB *dbp; /* Related DB access method. */ 487 DB_TXN *txn; /* Associated transaction. */ 488 489 /* 490 * !!! 491 * Explicit representations of structures in queue.h. 492 * 493 * TAILQ_ENTRY(__dbc); 494 */ 495 struct { 496 struct __dbc *tqe_next; 497 struct __dbc **tqe_prev; 498 } links; 499 500 u_int32_t lid; /* Default process' locker id. */ 501 u_int32_t locker; /* Locker for this operation. */ 502 DBT lock_dbt; /* DBT referencing lock. */ 503 DB_LOCK_ILOCK lock; /* Object to be locked. */ 504 DB_LOCK mylock; /* Lock held on this cursor. */ 505 506 DBT rkey; /* Returned key. */ 507 DBT rdata; /* Returned data. */ 508 509 int (*c_am_close) __P((DBC *)); 510 int (*c_am_destroy) __P((DBC *)); 511 int (*c_close) __P((DBC *)); 512 int (*c_del) __P((DBC *, u_int32_t)); 513 int (*c_get) __P((DBC *, DBT *, DBT *, u_int32_t)); 514 int (*c_put) __P((DBC *, DBT *, DBT *, u_int32_t)); 515 516 void *internal; /* Access method private. */ 517 518#define DBC_CONTINUE 0x001 /* Continue dup search: next item. */ 519#define DBC_KEYSET 0x002 /* Continue dup search: current item. */ 520#define DBC_RECOVER 0x004 /* In recovery (do not log or lock). */ 521#define DBC_RMW 0x008 /* Acquire write flag in read op. */ 522#define DBC_WRITER 0x010 /* Cursor immediately writing (CDB). */ 523 u_int32_t flags; 524}; 525 526/* Btree/recno statistics structure. */ 527struct __db_bt_stat { 528 u_int32_t bt_flags; /* Open flags. */ 529 u_int32_t bt_maxkey; /* Maxkey value. */ 530 u_int32_t bt_minkey; /* Minkey value. */ 531 u_int32_t bt_re_len; /* Fixed-length record length. */ 532 u_int32_t bt_re_pad; /* Fixed-length record pad. */ 533 u_int32_t bt_pagesize; /* Page size. */ 534 u_int32_t bt_levels; /* Tree levels. */ 535 u_int32_t bt_nrecs; /* Number of records. */ 536 u_int32_t bt_int_pg; /* Internal pages. */ 537 u_int32_t bt_leaf_pg; /* Leaf pages. */ 538 u_int32_t bt_dup_pg; /* Duplicate pages. */ 539 u_int32_t bt_over_pg; /* Overflow pages. */ 540 u_int32_t bt_free; /* Pages on the free list. */ 541 u_int32_t bt_int_pgfree; /* Bytes free in internal pages. */ 542 u_int32_t bt_leaf_pgfree; /* Bytes free in leaf pages. */ 543 u_int32_t bt_dup_pgfree; /* Bytes free in duplicate pages. */ 544 u_int32_t bt_over_pgfree; /* Bytes free in overflow pages. */ 545 u_int32_t bt_magic; /* Magic number. */ 546 u_int32_t bt_version; /* Version number. */ 547}; 548 549/* Hash statistics structure. */ 550struct __db_h_stat { 551 u_int32_t hash_accesses; /* Number of accesses to this table. */ 552 u_int32_t hash_collisions; /* Number of collisions on search. */ 553 u_int32_t hash_expansions; /* Number of times we added a bucket. */ 554 u_int32_t hash_overflows; /* Number of overflow pages. */ 555 u_int32_t hash_bigpages; /* Number of big key/data pages. */ 556 u_int32_t hash_dup; /* Number of dup pages. */ 557 u_int32_t hash_free; /* Pages on the free list. */ 558 u_int32_t hash_bfree; /* Bytes free on bucket pages. */ 559 u_int32_t hash_dup_free; /* Bytes free on duplicate pages. */ 560 u_int32_t hash_big_bfree; /* Bytes free on big item pages. */ 561 u_int32_t hash_buckets; /* Number of hash buckets. */ 562 u_int32_t hash_put; /* Number of puts. */ 563 u_int32_t hash_deleted; /* Number of deletes. */ 564 u_int32_t hash_get; /* Number of gets. */ 565 u_int32_t hash_magic; /* Magic number. */ 566 u_int32_t hash_version; /* Version number. */ 567 u_int32_t hash_pagesize; /* Page size. */ 568 u_int32_t hash_nrecs; /* Number of records. */ 569}; 570 571#if defined(__cplusplus) 572extern "C" { 573#endif 574int db_appinit __P((const char *, char * const *, DB_ENV *, u_int32_t)); 575int db_appexit __P((DB_ENV *)); 576int db_jump_set __P((void *, int)); 577int db_open __P((const char *, 578 DBTYPE, u_int32_t, int, DB_ENV *, DB_INFO *, DB **)); 579int db_value_set __P((int, int)); 580char *db_version __P((int *, int *, int *)); 581int db_xa_open __P((const char *, 582 DBTYPE, u_int32_t, int, DB_INFO *, DB **)); 583#if defined(__cplusplus) 584} 585#endif 586 587/******************************************************* 588 * Locking 589 *******************************************************/ 590#define DB_LOCKVERSION 1 591#define DB_LOCKMAGIC 0x090193 592 593/* Flag values for lock_vec(), lock_get(). */ 594#define DB_LOCK_NOWAIT 0x01 /* Don't wait on unavailable lock. */ 595#define DB_LOCK_UPGRADE 0x02 /* Upgrade an existing lock instead 596 of granting a new one (internal). */ 597 598/* Flag values for lock_detect(). */ 599#define DB_LOCK_CONFLICT 0x01 /* Run on any conflict. */ 600 601/* 602 * Request types. 603 * 604 * !!! 605 * Changes here must be reflected in java/src/com/sleepycat/db/Db.java. 606 */ 607typedef enum { 608 DB_LOCK_DUMP=0, /* Display held locks. */ 609 DB_LOCK_GET, /* Get the lock. */ 610 DB_LOCK_INHERIT, /* Pass locks to parent. */ 611 DB_LOCK_PUT, /* Release the lock. */ 612 DB_LOCK_PUT_ALL, /* Release locker's locks. */ 613 DB_LOCK_PUT_OBJ /* Release locker's locks on obj. */ 614} db_lockop_t; 615 616/* 617 * Simple R/W lock modes and for multi-granularity intention locking. 618 * 619 * !!! 620 * These values are NOT random, as they are used as an index into the lock 621 * conflicts arrays, i.e., DB_LOCK_IWRITE must be == 3, and DB_LOCK_IREAD 622 * must be == 4. 623 * 624 * !!! 625 * Changes here must be reflected in java/src/com/sleepycat/db/Db.java. 626 */ 627typedef enum { 628 DB_LOCK_NG=0, /* Not granted. */ 629 DB_LOCK_READ, /* Shared/read. */ 630 DB_LOCK_WRITE, /* Exclusive/write. */ 631 DB_LOCK_IWRITE, /* Intent exclusive/write. */ 632 DB_LOCK_IREAD, /* Intent to share/read. */ 633 DB_LOCK_IWR /* Intent to read and write. */ 634} db_lockmode_t; 635 636/* 637 * Status of a lock. 638 */ 639typedef enum { 640 DB_LSTAT_ABORTED, /* Lock belongs to an aborted txn. */ 641 DB_LSTAT_ERR, /* Lock is bad. */ 642 DB_LSTAT_FREE, /* Lock is unallocated. */ 643 DB_LSTAT_HELD, /* Lock is currently held. */ 644 DB_LSTAT_NOGRANT, /* Lock was not granted. */ 645 DB_LSTAT_PENDING, /* Lock was waiting and has been 646 * promoted; waiting for the owner 647 * to run and upgrade it to held. */ 648 DB_LSTAT_WAITING /* Lock is on the wait queue. */ 649} db_status_t; 650 651/* Lock request structure. */ 652struct __db_lockreq { 653 db_lockop_t op; /* Operation. */ 654 db_lockmode_t mode; /* Requested mode. */ 655 u_int32_t locker; /* Locker identity. */ 656 DBT *obj; /* Object being locked. */ 657 DB_LOCK lock; /* Lock returned. */ 658}; 659 660/* 661 * Commonly used conflict matrices. 662 * 663 * Standard Read/Write (or exclusive/shared) locks. 664 */ 665#define DB_LOCK_RW_N 3 666extern const u_int8_t db_rw_conflicts[]; 667 668/* Multi-granularity locking. */ 669#define DB_LOCK_RIW_N 6 670extern const u_int8_t db_riw_conflicts[]; 671 672struct __db_lock_stat { 673 u_int32_t st_magic; /* Lock file magic number. */ 674 u_int32_t st_version; /* Lock file version number. */ 675 u_int32_t st_maxlocks; /* Maximum number of locks in table. */ 676 u_int32_t st_nmodes; /* Number of lock modes. */ 677 u_int32_t st_numobjs; /* Number of objects. */ 678 u_int32_t st_nlockers; /* Number of lockers. */ 679 u_int32_t st_nconflicts; /* Number of lock conflicts. */ 680 u_int32_t st_nrequests; /* Number of lock gets. */ 681 u_int32_t st_nreleases; /* Number of lock puts. */ 682 u_int32_t st_ndeadlocks; /* Number of lock deadlocks. */ 683 u_int32_t st_region_wait; /* Region lock granted after wait. */ 684 u_int32_t st_region_nowait; /* Region lock granted without wait. */ 685 u_int32_t st_refcnt; /* Region reference count. */ 686 u_int32_t st_regsize; /* Region size. */ 687}; 688 689#if defined(__cplusplus) 690extern "C" { 691#endif 692int lock_close __P((DB_LOCKTAB *)); 693int lock_detect __P((DB_LOCKTAB *, u_int32_t, u_int32_t)); 694int lock_get __P((DB_LOCKTAB *, 695 u_int32_t, u_int32_t, const DBT *, db_lockmode_t, DB_LOCK *)); 696int lock_id __P((DB_LOCKTAB *, u_int32_t *)); 697int lock_open __P((const char *, 698 u_int32_t, int, DB_ENV *, DB_LOCKTAB **)); 699int lock_put __P((DB_LOCKTAB *, DB_LOCK)); 700int lock_tget __P((DB_LOCKTAB *, 701 DB_TXN *, u_int32_t, const DBT *, db_lockmode_t, DB_LOCK *)); 702int lock_stat __P((DB_LOCKTAB *, DB_LOCK_STAT **, void *(*)(size_t))); 703int lock_unlink __P((const char *, int, DB_ENV *)); 704int lock_vec __P((DB_LOCKTAB *, 705 u_int32_t, u_int32_t, DB_LOCKREQ *, int, DB_LOCKREQ **)); 706int lock_tvec __P((DB_LOCKTAB *, 707 DB_TXN *, u_int32_t, DB_LOCKREQ *, int, DB_LOCKREQ **)); 708#if defined(__cplusplus) 709} 710#endif 711 712/******************************************************* 713 * Logging. 714 *******************************************************/ 715/* Flag values for log_archive(). */ 716#define DB_ARCH_ABS 0x001 /* Absolute pathnames. */ 717#define DB_ARCH_DATA 0x002 /* Data files. */ 718#define DB_ARCH_LOG 0x004 /* Log files. */ 719 720/* 721 * A DB_LSN has two parts, a fileid which identifies a specific file, and an 722 * offset within that file. The fileid is an unsigned 4-byte quantity that 723 * uniquely identifies a file within the log directory -- currently a simple 724 * counter inside the log. The offset is also an unsigned 4-byte value. The 725 * log manager guarantees the offset is never more than 4 bytes by switching 726 * to a new log file before the maximum length imposed by an unsigned 4-byte 727 * offset is reached. 728 */ 729struct __db_lsn { 730 u_int32_t file; /* File ID. */ 731 u_int32_t offset; /* File offset. */ 732}; 733 734/* Log statistics structure. */ 735struct __db_log_stat { 736 u_int32_t st_magic; /* Log file magic number. */ 737 u_int32_t st_version; /* Log file version number. */ 738 int st_mode; /* Log file mode. */ 739 u_int32_t st_lg_max; /* Maximum log file size. */ 740 u_int32_t st_w_bytes; /* Bytes to log. */ 741 u_int32_t st_w_mbytes; /* Megabytes to log. */ 742 u_int32_t st_wc_bytes; /* Bytes to log since checkpoint. */ 743 u_int32_t st_wc_mbytes; /* Megabytes to log since checkpoint. */ 744 u_int32_t st_wcount; /* Total syncs to the log. */ 745 u_int32_t st_scount; /* Total writes to the log. */ 746 u_int32_t st_region_wait; /* Region lock granted after wait. */ 747 u_int32_t st_region_nowait; /* Region lock granted without wait. */ 748 u_int32_t st_cur_file; /* Current log file number. */ 749 u_int32_t st_cur_offset; /* Current log file offset. */ 750 u_int32_t st_refcnt; /* Region reference count. */ 751 u_int32_t st_regsize; /* Region size. */ 752}; 753 754#if defined(__cplusplus) 755extern "C" { 756#endif 757int log_archive __P((DB_LOG *, char **[], u_int32_t, void *(*)(size_t))); 758int log_close __P((DB_LOG *)); 759int log_compare __P((const DB_LSN *, const DB_LSN *)); 760int log_file __P((DB_LOG *, const DB_LSN *, char *, size_t)); 761int log_flush __P((DB_LOG *, const DB_LSN *)); 762int log_get __P((DB_LOG *, DB_LSN *, DBT *, u_int32_t)); 763int log_open __P((const char *, u_int32_t, int, DB_ENV *, DB_LOG **)); 764int log_put __P((DB_LOG *, DB_LSN *, const DBT *, u_int32_t)); 765int log_register __P((DB_LOG *, DB *, const char *, DBTYPE, u_int32_t *)); 766int log_stat __P((DB_LOG *, DB_LOG_STAT **, void *(*)(size_t))); 767int log_unlink __P((const char *, int, DB_ENV *)); 768int log_unregister __P((DB_LOG *, u_int32_t)); 769#if defined(__cplusplus) 770} 771#endif 772 773/******************************************************* 774 * Mpool 775 *******************************************************/ 776/* Flag values for memp_fget(). */ 777#define DB_MPOOL_CREATE 0x001 /* Create a page. */ 778#define DB_MPOOL_LAST 0x002 /* Return the last page. */ 779#define DB_MPOOL_NEW 0x004 /* Create a new page. */ 780 781/* Flag values for memp_fput(), memp_fset(). */ 782#define DB_MPOOL_CLEAN 0x001 /* Clear modified bit. */ 783#define DB_MPOOL_DIRTY 0x002 /* Page is modified. */ 784#define DB_MPOOL_DISCARD 0x004 /* Don't cache the page. */ 785 786/* Mpool statistics structure. */ 787struct __db_mpool_stat { 788 size_t st_cachesize; /* Cache size. */ 789 u_int32_t st_cache_hit; /* Pages found in the cache. */ 790 u_int32_t st_cache_miss; /* Pages not found in the cache. */ 791 u_int32_t st_map; /* Pages from mapped files. */ 792 u_int32_t st_page_create; /* Pages created in the cache. */ 793 u_int32_t st_page_in; /* Pages read in. */ 794 u_int32_t st_page_out; /* Pages written out. */ 795 u_int32_t st_ro_evict; /* Clean pages forced from the cache. */ 796 u_int32_t st_rw_evict; /* Dirty pages forced from the cache. */ 797 u_int32_t st_hash_buckets; /* Number of hash buckets. */ 798 u_int32_t st_hash_searches; /* Total hash chain searches. */ 799 u_int32_t st_hash_longest; /* Longest hash chain searched. */ 800 u_int32_t st_hash_examined; /* Total hash entries searched. */ 801 u_int32_t st_page_clean; /* Clean pages. */ 802 u_int32_t st_page_dirty; /* Dirty pages. */ 803 u_int32_t st_page_trickle; /* Pages written by memp_trickle. */ 804 u_int32_t st_region_wait; /* Region lock granted after wait. */ 805 u_int32_t st_region_nowait; /* Region lock granted without wait. */ 806 u_int32_t st_refcnt; /* Region reference count. */ 807 u_int32_t st_regsize; /* Region size. */ 808}; 809 810/* Mpool file open information structure. */ 811struct __db_mpool_finfo { 812 int ftype; /* File type. */ 813 DBT *pgcookie; /* Byte-string passed to pgin/pgout. */ 814 u_int8_t *fileid; /* Unique file ID. */ 815 int32_t lsn_offset; /* LSN offset in page. */ 816 u_int32_t clear_len; /* Cleared length on created pages. */ 817}; 818 819/* Mpool file statistics structure. */ 820struct __db_mpool_fstat { 821 char *file_name; /* File name. */ 822 size_t st_pagesize; /* Page size. */ 823 u_int32_t st_cache_hit; /* Pages found in the cache. */ 824 u_int32_t st_cache_miss; /* Pages not found in the cache. */ 825 u_int32_t st_map; /* Pages from mapped files. */ 826 u_int32_t st_page_create; /* Pages created in the cache. */ 827 u_int32_t st_page_in; /* Pages read in. */ 828 u_int32_t st_page_out; /* Pages written out. */ 829}; 830 831#if defined(__cplusplus) 832extern "C" { 833#endif 834int memp_close __P((DB_MPOOL *)); 835int memp_fclose __P((DB_MPOOLFILE *)); 836int memp_fget __P((DB_MPOOLFILE *, db_pgno_t *, u_int32_t, void *)); 837int memp_fopen __P((DB_MPOOL *, const char *, 838 u_int32_t, int, size_t, DB_MPOOL_FINFO *, DB_MPOOLFILE **)); 839int memp_fput __P((DB_MPOOLFILE *, void *, u_int32_t)); 840int memp_fset __P((DB_MPOOLFILE *, void *, u_int32_t)); 841int memp_fsync __P((DB_MPOOLFILE *)); 842int memp_open __P((const char *, u_int32_t, int, DB_ENV *, DB_MPOOL **)); 843int memp_register __P((DB_MPOOL *, int, 844 int (*)(db_pgno_t, void *, DBT *), 845 int (*)(db_pgno_t, void *, DBT *))); 846int memp_stat __P((DB_MPOOL *, 847 DB_MPOOL_STAT **, DB_MPOOL_FSTAT ***, void *(*)(size_t))); 848int memp_sync __P((DB_MPOOL *, DB_LSN *)); 849int memp_trickle __P((DB_MPOOL *, int, int *)); 850int memp_unlink __P((const char *, int, DB_ENV *)); 851#if defined(__cplusplus) 852} 853#endif 854 855/******************************************************* 856 * Transactions. 857 *******************************************************/ 858#define DB_TXNVERSION 1 859#define DB_TXNMAGIC 0x041593 860 861/* Operations values to the tx_recover() function. */ 862#define DB_TXN_BACKWARD_ROLL 1 /* Read the log backwards. */ 863#define DB_TXN_FORWARD_ROLL 2 /* Read the log forwards. */ 864#define DB_TXN_OPENFILES 3 /* Read for open files. */ 865#define DB_TXN_REDO 4 /* Redo the operation. */ 866#define DB_TXN_UNDO 5 /* Undo the operation. */ 867 868/* Internal transaction status values. */ 869 870/* Transaction statistics structure. */ 871struct __db_txn_active { 872 u_int32_t txnid; /* Transaction ID */ 873 DB_LSN lsn; /* Lsn of the begin record */ 874}; 875 876struct __db_txn_stat { 877 DB_LSN st_last_ckp; /* lsn of the last checkpoint */ 878 DB_LSN st_pending_ckp; /* last checkpoint did not finish */ 879 time_t st_time_ckp; /* time of last checkpoint */ 880 u_int32_t st_last_txnid; /* last transaction id given out */ 881 u_int32_t st_maxtxns; /* maximum number of active txns */ 882 u_int32_t st_naborts; /* number of aborted transactions */ 883 u_int32_t st_nbegins; /* number of begun transactions */ 884 u_int32_t st_ncommits; /* number of committed transactions */ 885 u_int32_t st_nactive; /* number of active transactions */ 886 DB_TXN_ACTIVE 887 *st_txnarray; /* array of active transactions */ 888 u_int32_t st_region_wait; /* Region lock granted after wait. */ 889 u_int32_t st_region_nowait; /* Region lock granted without wait. */ 890 u_int32_t st_refcnt; /* Region reference count. */ 891 u_int32_t st_regsize; /* Region size. */ 892}; 893 894#if defined(__cplusplus) 895extern "C" { 896#endif 897int txn_abort __P((DB_TXN *)); 898int txn_begin __P((DB_TXNMGR *, DB_TXN *, DB_TXN **)); 899int txn_checkpoint __P((const DB_TXNMGR *, u_int32_t, u_int32_t)); 900int txn_commit __P((DB_TXN *)); 901int txn_close __P((DB_TXNMGR *)); 902u_int32_t txn_id __P((DB_TXN *)); 903int txn_open __P((const char *, u_int32_t, int, DB_ENV *, DB_TXNMGR **)); 904int txn_prepare __P((DB_TXN *)); 905int txn_stat __P((DB_TXNMGR *, DB_TXN_STAT **, void *(*)(size_t))); 906int txn_unlink __P((const char *, int, DB_ENV *)); 907#if defined(__cplusplus) 908} 909#endif 910 911#ifndef DB_DBM_HSEARCH 912#define DB_DBM_HSEARCH 0 /* No historic interfaces by default. */ 913#endif 914#if DB_DBM_HSEARCH != 0 915/******************************************************* 916 * Dbm/Ndbm historic interfaces. 917 *******************************************************/ 918#define DBM_INSERT 0 /* Flags to dbm_store(). */ 919#define DBM_REPLACE 1 920 921/* 922 * The db(3) support for ndbm(3) always appends this suffix to the 923 * file name to avoid overwriting the user's original database. 924 */ 925#define DBM_SUFFIX ".db" 926 927#if defined(_XPG4_2) 928typedef struct { 929 char *dptr; 930 size_t dsize; 931} datum; 932#else 933typedef struct { 934 char *dptr; 935 int dsize; 936} datum; 937#endif 938 939/* 940 * Translate DBM calls into DB calls so that DB doesn't step on the 941 * application's name space. 942 * 943 * The global variables dbrdonly, dirf and pagf were not retained when 944 * 4BSD replaced the dbm interface with ndbm, and are not support here. 945 */ 946#define dbminit(a) __db_dbm_init(a) 947#define dbmclose __db_dbm_close 948#if !defined(__cplusplus) 949#define delete(a) __db_dbm_delete(a) 950#endif 951#define fetch(a) __db_dbm_fetch(a) 952#define firstkey __db_dbm_firstkey 953#define nextkey(a) __db_dbm_nextkey(a) 954#define store(a, b) __db_dbm_store(a, b) 955 956/* Prototype the DB calls. */ 957#if defined(__cplusplus) 958extern "C" { 959#endif 960int __db_dbm_close __P((void)); 961int __db_dbm_dbrdonly __P((void)); 962int __db_dbm_delete __P((datum)); 963int __db_dbm_dirf __P((void)); 964datum __db_dbm_fetch __P((datum)); 965datum __db_dbm_firstkey __P((void)); 966int __db_dbm_init __P((char *)); 967datum __db_dbm_nextkey __P((datum)); 968int __db_dbm_pagf __P((void)); 969int __db_dbm_store __P((datum, datum)); 970#if defined(__cplusplus) 971} 972#endif 973 974/* 975 * Translate NDBM calls into DB calls so that DB doesn't step on the 976 * application's name space. 977 */ 978#define dbm_clearerr(a) __db_ndbm_clearerr(a) 979#define dbm_close(a) __db_ndbm_close(a) 980#define dbm_delete(a, b) __db_ndbm_delete(a, b) 981#define dbm_dirfno(a) __db_ndbm_dirfno(a) 982#define dbm_error(a) __db_ndbm_error(a) 983#define dbm_fetch(a, b) __db_ndbm_fetch(a, b) 984#define dbm_firstkey(a) __db_ndbm_firstkey(a) 985#define dbm_nextkey(a) __db_ndbm_nextkey(a) 986#define dbm_open(a, b, c) __db_ndbm_open(a, b, c) 987#define dbm_pagfno(a) __db_ndbm_pagfno(a) 988#define dbm_rdonly(a) __db_ndbm_rdonly(a) 989#define dbm_store(a, b, c, d) __db_ndbm_store(a, b, c, d) 990 991/* Prototype the DB calls. */ 992#if defined(__cplusplus) 993extern "C" { 994#endif 995int __db_ndbm_clearerr __P((DBM *)); 996void __db_ndbm_close __P((DBM *)); 997int __db_ndbm_delete __P((DBM *, datum)); 998int __db_ndbm_dirfno __P((DBM *)); 999int __db_ndbm_error __P((DBM *)); 1000datum __db_ndbm_fetch __P((DBM *, datum)); 1001datum __db_ndbm_firstkey __P((DBM *)); 1002datum __db_ndbm_nextkey __P((DBM *)); 1003DBM *__db_ndbm_open __P((const char *, int, int)); 1004int __db_ndbm_pagfno __P((DBM *)); 1005int __db_ndbm_rdonly __P((DBM *)); 1006int __db_ndbm_store __P((DBM *, datum, datum, int)); 1007#if defined(__cplusplus) 1008} 1009#endif 1010 1011/******************************************************* 1012 * Hsearch historic interface. 1013 *******************************************************/ 1014typedef enum { 1015 FIND, ENTER 1016} ACTION; 1017 1018typedef struct entry { 1019 char *key; 1020 char *data; 1021} ENTRY; 1022 1023/* 1024 * Translate HSEARCH calls into DB calls so that DB doesn't step on the 1025 * application's name space. 1026 */ 1027#define hcreate(a) __db_hcreate(a) 1028#define hdestroy __db_hdestroy 1029#define hsearch(a, b) __db_hsearch(a, b) 1030 1031/* Prototype the DB calls. */ 1032#if defined(__cplusplus) 1033extern "C" { 1034#endif 1035int __db_hcreate __P((size_t)); 1036void __db_hdestroy __P((void)); 1037ENTRY *__db_hsearch __P((ENTRY, ACTION)); 1038#if defined(__cplusplus) 1039} 1040#endif 1041#endif /* DB_DBM_HSEARCH */ 1042 1043/* 1044 * XXX 1045 * MacOS: Reset Metrowerks C enum sizes. 1046 */ 1047#ifdef __MWERKS__ 1048#pragma enumsalwaysint reset 1049#endif 1050#endif /* !_DB_H_ */ 1051