/*
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996,2007 Oracle. All rights reserved.
*
* $Id: db.in,v 12.158 2007/06/28 14:23:35 mjc Exp $
*
* db.h include file layout:
* General.
* Database Environment.
* Locking subsystem.
* Logging subsystem.
* Shared buffer cache (mpool) subsystem.
* Transaction subsystem.
* Access methods.
* Access method cursors.
* Dbm/Ndbm, Hsearch historic interfaces.
*/
#ifndef _DB_H_
#define _DB_H_
#ifndef __NO_SYSTEM_INCLUDES
#include <sys/types.h>
@inttypes_h_decl@
@stdint_h_decl@
@stddef_h_decl@
#include <stdio.h>
@unistd_h_decl@
@thread_h_decl@
#endif
@platform_header@
#if defined(__cplusplus)
extern "C" {
#endif
@DB_CONST@
@DB_PROTO1@
@DB_PROTO2@
/*
* Berkeley DB version information.
*/
#define DB_VERSION_MAJOR @DB_VERSION_MAJOR@
#define DB_VERSION_MINOR @DB_VERSION_MINOR@
#define DB_VERSION_PATCH @DB_VERSION_PATCH@
#define DB_VERSION_STRING @DB_VERSION_STRING@
/*
* !!!
* Berkeley DB uses 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.
*/
#ifndef __BIT_TYPES_DEFINED__
#define __BIT_TYPES_DEFINED__
@u_int8_decl@
@int16_decl@
@u_int16_decl@
@int32_decl@
@u_int32_decl@
@int64_decl@
@u_int64_decl@
#endif
@u_char_decl@
@u_int_decl@
@u_long_decl@
@u_short_decl@
/*
* Missing ANSI types.
*
* uintmax_t --
* Largest unsigned type, used to align structures in memory. We don't store
* floating point types in structures, so integral types should be sufficient
* (and we don't have to worry about systems that store floats in other than
* power-of-2 numbers of bytes). Additionally this fixes compilers that rewrite
* structure assignments and ANSI C memcpy calls to be in-line instructions
* that happen to require alignment.
*
* uintptr_t --
* Unsigned type that's the same size as a pointer. There are places where
* DB modifies pointers by discarding the bottom bits to guarantee alignment.
* We can't use uintmax_t, it may be larger than the pointer, and compilers
* get upset about that. So far we haven't run on any machine where there's
* no unsigned type the same size as a pointer -- here's hoping.
*/
@uintmax_t_decl@
@uintptr_t_decl@
@FILE_t_decl@
@off_t_decl@
@pid_t_decl@
@size_t_decl@
@ssize_t_decl@
@time_t_decl@
/*
* Sequences are only available on machines with 64-bit integral types.
*/
@db_seq_decl@
/* Thread and process identification. */
@db_threadid_t_decl@
/* Basic types that are exported or quasi-exported. */
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 u_int32_t db_timeout_t; /* Type of a timeout. */
/*
* Region offsets are the difference between a pointer in a region and the
* region's base address. With private environments, both addresses are the
* result of calling malloc, and we can't assume anything about what malloc
* will return, so region offsets have to be able to hold differences between
* arbitrary pointers.
*/
typedef uintptr_t roff_t;
/*
* Forward structure declarations, so we can declare pointers and
* applications can get type checking.
*/
struct __db; typedef struct __db DB;
struct __db_bt_stat; typedef struct __db_bt_stat DB_BTREE_STAT;
struct __db_cipher; typedef struct __db_cipher DB_CIPHER;
struct __db_compact; typedef struct __db_compact DB_COMPACT;
struct __db_dbt; typedef struct __db_dbt DBT;
struct __db_env; typedef struct __db_env DB_ENV;
struct __db_h_stat; typedef struct __db_h_stat DB_HASH_STAT;
struct __db_ilock; typedef struct __db_ilock DB_LOCK_ILOCK;
struct __db_lock_stat; typedef struct __db_lock_stat DB_LOCK_STAT;
struct __db_lock_hstat; typedef struct __db_lock_hstat DB_LOCK_HSTAT;
struct __db_lock_u; typedef struct __db_lock_u DB_LOCK;
struct __db_locker; typedef struct __db_locker DB_LOCKER;
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_cursor; typedef struct __db_log_cursor DB_LOGC;
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_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_mutex_stat; typedef struct __db_mutex_stat DB_MUTEX_STAT;
struct __db_mutex_t; typedef struct __db_mutex_t DB_MUTEX;
struct __db_mutexmgr; typedef struct __db_mutexmgr DB_MUTEXMGR;
struct __db_preplist; typedef struct __db_preplist DB_PREPLIST;
struct __db_qam_stat; typedef struct __db_qam_stat DB_QUEUE_STAT;
struct __db_rep; typedef struct __db_rep DB_REP;
struct __db_rep_stat; typedef struct __db_rep_stat DB_REP_STAT;
struct __db_repmgr_site; \
typedef struct __db_repmgr_site DB_REPMGR_SITE;
struct __db_repmgr_stat; \
typedef struct __db_repmgr_stat DB_REPMGR_STAT;
struct __db_seq_record; typedef struct __db_seq_record DB_SEQ_RECORD;
struct __db_seq_stat; typedef struct __db_seq_stat DB_SEQUENCE_STAT;
struct __db_sequence; typedef struct __db_sequence DB_SEQUENCE;
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 __dbc; typedef struct __dbc DBC;
struct __dbc_internal; typedef struct __dbc_internal DBC_INTERNAL;
struct __fh_t; typedef struct __fh_t DB_FH;
struct __fname; typedef struct __fname FNAME;
struct __key_range; typedef struct __key_range DB_KEY_RANGE;
struct __mpoolfile; typedef struct __mpoolfile MPOOLFILE;
/* 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. */
void *app_data;
#define DB_DBT_APPMALLOC 0x001 /* Callback allocated memory. */
#define DB_DBT_DUPOK 0x002 /* Insert if duplicate. */
#define DB_DBT_ISSET 0x004 /* Lower level calls set value. */
#define DB_DBT_MALLOC 0x008 /* Return in malloc'd memory. */
#define DB_DBT_MULTIPLE 0x010 /* References multiple records. */
#define DB_DBT_PARTIAL 0x020 /* Partial put/get. */
#define DB_DBT_REALLOC 0x040 /* Return in realloc'd memory. */
#define DB_DBT_USERCOPY 0x080 /* Use the user-supplied callback. */
#define DB_DBT_USERMEM 0x100 /* Return in user's memory. */
u_int32_t flags;
};
/*
* Common flags --
* Interfaces which use any of these common flags should never have
* interface specific flags in this range.
*/
#define DB_CREATE 0x0000001 /* Create file as necessary. */
#define DB_DURABLE_UNKNOWN 0x0000002 /* Durability on open (internal). */
#define DB_FORCE 0x0000004 /* Force (anything). */
#define DB_MULTIVERSION 0x0000008 /* Multiversion concurrency control. */
#define DB_NOMMAP 0x0000010 /* Don't mmap underlying file. */
#define DB_RDONLY 0x0000020 /* Read-only (O_RDONLY). */
#define DB_RECOVER 0x0000040 /* Run normal recovery. */
#define DB_THREAD 0x0000080 /* Applications are threaded. */
#define DB_TRUNCATE 0x0000100 /* Discard existing DB (O_TRUNC). */
#define DB_TXN_NOSYNC 0x0000200 /* Do not sync log on commit. */
#define DB_TXN_NOWAIT 0x0000400 /* Do not wait for locks. */
#define DB_TXN_NOT_DURABLE 0x0000800 /* Do not log changes. */
#define DB_TXN_WRITE_NOSYNC 0x0001000 /* Write the log but don't sync. */
#define DB_SPARE_FLAG 0x0002000 /* Spare. */
/*
* Common flags --
* Interfaces which use any of these common flags should never have
* interface specific flags in this range.
*
* DB_AUTO_COMMIT:
* DB_ENV->set_flags, DB->open
* (Note: until the 4.3 release, legal to DB->associate, DB->del,
* DB->put, DB->remove, DB->rename and DB->truncate, and others.)
* DB_READ_COMMITTED:
* DB->cursor, DB->get, DB->join, DBcursor->get, DB_ENV->txn_begin
* DB_READ_UNCOMMITTED:
* DB->cursor, DB->get, DB->join, DB->open, DBcursor->get,
* DB_ENV->txn_begin
* DB_TXN_SNAPSHOT:
* DB_ENV->set_flags, DB_ENV->txn_begin, DB->cursor
*
* !!!
* The DB_READ_COMMITTED and DB_READ_UNCOMMITTED bit masks can't be changed
* without also changing the masks for the flags that can be OR'd into DB
* access method and cursor operation values.
*/
#define DB_IGNORE_LEASE 0x01000000/* Ignore leases. */
#define DB_AUTO_COMMIT 0x02000000/* Implied transaction. */
#define DB_READ_COMMITTED 0x04000000/* Degree 2 isolation. */
#define DB_DEGREE_2 0x04000000/* Historic name. */
#define DB_READ_UNCOMMITTED 0x08000000/* Degree 1 isolation. */
#define DB_DIRTY_READ 0x08000000/* Historic name. */
#define DB_TXN_SNAPSHOT 0x10000000/* Snapshot isolation. */
/*
* Flags common to db_env_create and db_create.
*/
#define DB_CXX_NO_EXCEPTIONS 0x0000001 /* C++: return error values. */
/*
* Flags private to db_env_create.
* Shared flags up to 0x0000001 */
#define DB_RPCCLIENT 0x0000002 /* An RPC client environment. */
/*
* Flags private to db_create.
* Shared flags up to 0x0000001 */
#define DB_XA_CREATE 0x0000002 /* Open in an XA environment. */
/*
* Flags shared by DB_ENV->remove and DB_ENV->open.
* Shared flags up to 0x0002000 */
#define DB_USE_ENVIRON 0x0004000 /* Use the environment. */
#define DB_USE_ENVIRON_ROOT 0x0008000 /* Use the environment if root. */
/*
* Flags private to DB_ENV->open.
*/
#define DB_INIT_CDB 0x0010000 /* Concurrent Access Methods. */
#define DB_INIT_LOCK 0x0020000 /* Initialize locking. */
#define DB_INIT_LOG 0x0040000 /* Initialize logging. */
#define DB_INIT_MPOOL 0x0080000 /* Initialize mpool. */
#define DB_INIT_REP 0x0100000 /* Initialize replication. */
#define DB_INIT_TXN 0x0200000 /* Initialize transactions. */
#define DB_LOCKDOWN 0x0400000 /* Lock memory into physical core. */
#define DB_PRIVATE 0x0800000 /* DB_ENV is process local. */
#define DB_RECOVER_FATAL 0x1000000 /* Run catastrophic recovery. */
#define DB_REGISTER 0x2000000 /* Multi-process registry. */
#define DB_SYSTEM_MEM 0x4000000 /* Use system-backed memory. */
#define DB_JOINENV 0x0 /* Compatibility. */
/*
* Flags private to DB->open.
* Shared flags up to 0x0002000 */
#define DB_EXCL 0x0004000 /* Exclusive open (O_EXCL). */
#define DB_FCNTL_LOCKING 0x0008000 /* UNDOC: fcntl(2) locking. */
#define DB_NO_AUTO_COMMIT 0x0010000 /* Override env-wide AUTOCOMMIT. */
#define DB_RDWRMASTER 0x0020000 /* UNDOC: allow subdb master open R/W */
#define DB_WRITEOPEN 0x0040000 /* UNDOC: open with write lock. */
/*
* Flags private to DB->associate.
* Shared flags up to 0x0002000 */
#define DB_IMMUTABLE_KEY 0x0004000 /* Secondary key is immutable. */
/* Shared flags at 0x1000000 */
/*
* Flags private to DB_ENV->txn_begin.
* Shared flags up to 0x0002000 */
#define DB_TXN_SYNC 0x0004000 /* Always sync log on commit. */
#define DB_TXN_WAIT 0x0008000 /* Always wait for locks in this TXN. */
/*
* Flags private to DB_ENV->txn_checkpoint.
* Shared flags up to 0x0002000 */
#define DB_CKP_INTERNAL 0x0004000 /* Internally generated checkpoint. */
/*
* Flags private to DB_ENV->set_encrypt.
*/
#define DB_ENCRYPT_AES 0x0000001 /* AES, assumes SHA1 checksum */
/*
* Flags private to DB_ENV->set_flags.
* Shared flags up to 0x00002000 */
#define DB_CDB_ALLDB 0x00004000/* Set CDB locking per environment. */
#define DB_DIRECT_DB 0x00008000/* Don't buffer databases in the OS. */
#define DB_DIRECT_LOG 0x00010000/* Don't buffer log files in the OS. */
#define DB_DSYNC_DB 0x00020000/* Set O_DSYNC on the databases. */
#define DB_DSYNC_LOG 0x00040000/* Set O_DSYNC on the log. */
#define DB_LOG_AUTOREMOVE 0x00080000/* Automatically remove log files. */
#define DB_LOG_INMEMORY 0x00100000/* Store logs in buffers in memory. */
#define DB_NOLOCKING 0x00200000/* Set locking/mutex behavior. */
#define DB_NOPANIC 0x00400000/* Set panic state per DB_ENV. */
#define DB_OVERWRITE 0x00800000/* Overwrite unlinked region files. */
#define DB_PANIC_ENVIRONMENT 0x01000000/* Set panic state per environment. */
/* Shared flags at 0x02000000 */
/* Shared flags at 0x04000000 */
/* Shared flags at 0x08000000 */
/* Shared flags at 0x10000000 */
#define DB_REGION_INIT 0x20000000/* Page-fault regions on open. */
#define DB_TIME_NOTGRANTED 0x40000000/* Return NOTGRANTED on timeout. */
#define DB_YIELDCPU 0x80000000/* Yield the CPU (a lot). */
/*
* Flags private to DB->set_feedback's callback.
*/
#define DB_UPGRADE 0x0000001 /* Upgrading. */
#define DB_VERIFY 0x0000002 /* Verifying. */
/*
* Flags private to DB->compact.
* Shared flags up to 0x00002000
*/
#define DB_FREELIST_ONLY 0x00004000 /* Just sort and truncate. */
#define DB_FREE_SPACE 0x00008000 /* Free space . */
#define DB_COMPACT_FLAGS \
(DB_FREELIST_ONLY | DB_FREE_SPACE)
/*
* Flags private to DB_MPOOLFILE->open.
* Shared flags up to 0x0002000 */
#define DB_DIRECT 0x0004000 /* Don't buffer the file in the OS. */
#define DB_EXTENT 0x0008000 /* internal: dealing with an extent. */
#define DB_ODDFILESIZE 0x0010000 /* Truncate file to N * pgsize. */
/*
* Flags private to DB->set_flags.
* Shared flags up to 0x00002000 */
#define DB_CHKSUM 0x00004000 /* Do checksumming */
#define DB_DUP 0x00008000 /* Btree, Hash: duplicate keys. */
#define DB_DUPSORT 0x00010000 /* Btree, Hash: duplicate keys. */
#define DB_ENCRYPT 0x00020000 /* Btree, Hash: duplicate keys. */
#define DB_INORDER 0x00040000 /* Queue: strict ordering on consume */
#define DB_RECNUM 0x00080000 /* Btree: record numbers. */
#define DB_RENUMBER 0x00100000 /* Recno: renumber on insert/delete. */
#define DB_REVSPLITOFF 0x00200000 /* Btree: turn off reverse splits. */
#define DB_SNAPSHOT 0x00400000 /* Recno: snapshot the input. */
/*
* Flags private to the DB_ENV->stat_print, DB->stat and DB->stat_print methods.
*/
#define DB_FAST_STAT 0x0000001 /* Don't traverse the database. */
#define DB_STAT_ALL 0x0000002 /* Print: Everything. */
#define DB_STAT_CLEAR 0x0000004 /* Clear stat after returning values. */
#define DB_STAT_LOCK_CONF 0x0000008 /* Print: Lock conflict matrix. */
#define DB_STAT_LOCK_LOCKERS 0x0000010 /* Print: Lockers. */
#define DB_STAT_LOCK_OBJECTS 0x0000020 /* Print: Lock objects. */
#define DB_STAT_LOCK_PARAMS 0x0000040 /* Print: Lock parameters. */
#define DB_STAT_MEMP_HASH 0x0000080 /* Print: Mpool hash buckets. */
#define DB_STAT_NOERROR 0x0000100 /* Internal: continue on error. */
#define DB_STAT_SUBSYSTEM 0x0000200 /* Print: Subsystems too. */
/*
* Flags private to DB->join.
*/
#define DB_JOIN_NOSORT 0x0000001 /* Don't try to optimize join. */
/*
* Flags private to DB->verify.
*/
#define DB_AGGRESSIVE 0x0000001 /* Salvage whatever could be data.*/
#define DB_NOORDERCHK 0x0000002 /* Skip sort order/hashing check. */
#define DB_ORDERCHKONLY 0x0000004 /* Only perform the order check. */
#define DB_PR_PAGE 0x0000008 /* Show page contents (-da). */
#define DB_PR_RECOVERYTEST 0x0000010 /* Recovery test (-dr). */
#define DB_PRINTABLE 0x0000020 /* Use printable format for salvage. */
#define DB_SALVAGE 0x0000040 /* Salvage what looks like data. */
#define DB_UNREF 0x0000080 /* Report unreferenced pages. */
/*
* !!!
* These must not go over 0x8000, or they will collide with the flags
* used by __bam_vrfy_subtree.
*/
/*
* Flags private to DB->rep_set_transport's send callback.
*/
#define DB_REP_ANYWHERE 0x0000001 /* Message can be serviced anywhere. */
#define DB_REP_NOBUFFER 0x0000002 /* Do not buffer this message. */
#define DB_REP_PERMANENT 0x0000004 /* Important--app. may want to flush. */
#define DB_REP_REREQUEST 0x0000008 /* This msg already been requested. */
/*******************************************************
* Mutexes.
*******************************************************/
typedef u_int32_t db_mutex_t;
/*
* Flag arguments for DbEnv.mutex_alloc, DbEnv.is_alive and for the
* DB_MUTEX structure.
*/
#define DB_MUTEX_ALLOCATED 0x01 /* Mutex currently allocated. */
#define DB_MUTEX_LOCKED 0x02 /* Mutex currently locked. */
#define DB_MUTEX_LOGICAL_LOCK 0x04 /* Mutex backs a database lock. */
#define DB_MUTEX_PROCESS_ONLY 0x08 /* Mutex private to a process. */
#define DB_MUTEX_SELF_BLOCK 0x10 /* Must be able to block self. */
struct __db_mutex_stat {
/* The following fields are maintained in the region's copy. */
u_int32_t st_mutex_align; /* Mutex alignment */
u_int32_t st_mutex_tas_spins; /* Mutex test-and-set spins */
u_int32_t st_mutex_cnt; /* Mutex count */
u_int32_t st_mutex_free; /* Available mutexes */
u_int32_t st_mutex_inuse; /* Mutexes in use */
u_int32_t st_mutex_inuse_max; /* Maximum mutexes ever in use */
/* The following fields are filled-in from other places. */
#ifndef __TEST_DB_NO_STATISTICS
u_int32_t st_region_wait; /* Region lock granted after wait. */
u_int32_t st_region_nowait; /* Region lock granted without wait. */
roff_t st_regsize; /* Region size. */
#endif
};
/* This is the length of the buffer passed to DB_ENV->thread_id_string() */
#define DB_THREADID_STRLEN 128
/*******************************************************
* Locking.
*******************************************************/
#define DB_LOCKVERSION 1
#define DB_FILE_ID_LEN 20 /* Unique file ID length. */
/*
* Deadlock detector modes; used in the DB_ENV structure to configure the
* locking subsystem.
*/
#define DB_LOCK_NORUN 0
#define DB_LOCK_DEFAULT 1 /* Default policy. */
#define DB_LOCK_EXPIRE 2 /* Only expire locks, no detection. */
#define DB_LOCK_MAXLOCKS 3 /* Select locker with max locks. */
#define DB_LOCK_MAXWRITE 4 /* Select locker with max writelocks. */
#define DB_LOCK_MINLOCKS 5 /* Select locker with min locks. */
#define DB_LOCK_MINWRITE 6 /* Select locker with min writelocks. */
#define DB_LOCK_OLDEST 7 /* Select oldest locker. */
#define DB_LOCK_RANDOM 8 /* Select random locker. */
#define DB_LOCK_YOUNGEST 9 /* Select youngest locker. */
/* Flag values for lock_vec(), lock_get(). */
#define DB_LOCK_ABORT 0x001 /* Internal: Lock during abort. */
#define DB_LOCK_NOWAIT 0x002 /* Don't wait on unavailable lock. */
#define DB_LOCK_RECORD 0x004 /* Internal: record lock. */
#define DB_LOCK_SET_TIMEOUT 0x008 /* Internal: set lock timeout. */
#define DB_LOCK_SWITCH 0x010 /* Internal: switch existing lock. */
#define DB_LOCK_UPGRADE 0x020 /* Internal: upgrade existing lock. */
/* Flag values for DbEnv.set_timeout. */
#define DB_SET_LOCK_TIMEOUT 1 /* Set lock timeout */
#define DB_SET_TXN_NOW 2 /* Timeout lock now (internal) */
#define DB_SET_TXN_TIMEOUT 3 /* Set transaction timeout */
/*
* 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.
*/
typedef enum {
DB_LOCK_NG=0, /* Not granted. */
DB_LOCK_READ=1, /* Shared/read. */
DB_LOCK_WRITE=2, /* Exclusive/write. */
DB_LOCK_WAIT=3, /* Wait for event */
DB_LOCK_IWRITE=4, /* Intent exclusive/write. */
DB_LOCK_IREAD=5, /* Intent to share/read. */
DB_LOCK_IWR=6, /* Intent to read and write. */
DB_LOCK_READ_UNCOMMITTED=7, /* Degree 1 isolation. */
DB_LOCK_WWRITE=8 /* Was Written. */
} db_lockmode_t;
/*
* Request types.
*/
typedef enum {
DB_LOCK_DUMP=0, /* Display held locks. */
DB_LOCK_GET=1, /* Get the lock. */
DB_LOCK_GET_TIMEOUT=2, /* Get lock with a timeout. */
DB_LOCK_INHERIT=3, /* Pass locks to parent. */
DB_LOCK_PUT=4, /* Release the lock. */
DB_LOCK_PUT_ALL=5, /* Release locker's locks. */
DB_LOCK_PUT_OBJ=6, /* Release locker's locks on obj. */
DB_LOCK_PUT_READ=7, /* Release locker's read locks. */
DB_LOCK_TIMEOUT=8, /* Force a txn to timeout. */
DB_LOCK_TRADE=9, /* Trade locker ids on a lock. */
DB_LOCK_UPGRADE_WRITE=10 /* Upgrade writes for dirty reads. */
} db_lockop_t;
/*
* Status of a lock.
*/
typedef enum {
DB_LSTAT_ABORTED=1, /* Lock belongs to an aborted txn. */
DB_LSTAT_EXPIRED=2, /* Lock has expired. */
DB_LSTAT_FREE=3, /* Lock is unallocated. */
DB_LSTAT_HELD=4, /* Lock is currently held. */
DB_LSTAT_PENDING=5, /* Lock was waiting and has been
* promoted; waiting for the owner
* to run and upgrade it to held. */
DB_LSTAT_WAITING=6 /* Lock is on the wait queue. */
}db_status_t;
/* Lock statistics structure. */
struct __db_lock_stat {
u_int32_t st_id; /* Last allocated locker ID. */
u_int32_t st_cur_maxid; /* Current maximum unused ID. */
u_int32_t st_maxlocks; /* Maximum number of locks in table. */
u_int32_t st_maxlockers; /* Maximum num of lockers in table. */
u_int32_t st_maxobjects; /* Maximum num of objects in table. */
int st_nmodes; /* Number of lock modes. */
u_int32_t st_nlockers; /* Current number of lockers. */
#ifndef __TEST_DB_NO_STATISTICS
u_int32_t st_nlocks; /* Current number of locks. */
u_int32_t st_maxnlocks; /* Maximum number of locks so far. */
u_int32_t st_maxnlockers; /* Maximum number of lockers so far. */
u_int32_t st_nobjects; /* Current number of objects. */
u_int32_t st_maxnobjects; /* Maximum number of objects so far. */
u_int32_t st_nrequests; /* Number of lock gets. */
u_int32_t st_nreleases; /* Number of lock puts. */
u_int32_t st_nupgrade; /* Number of lock upgrades. */
u_int32_t st_ndowngrade; /* Number of lock downgrades. */
u_int32_t st_lock_wait; /* Lock conflicts w/ subsequent wait */
u_int32_t st_lock_nowait; /* Lock conflicts w/o subsequent wait */
u_int32_t st_ndeadlocks; /* Number of lock deadlocks. */
db_timeout_t st_locktimeout; /* Lock timeout. */
u_int32_t st_nlocktimeouts; /* Number of lock timeouts. */
db_timeout_t st_txntimeout; /* Transaction timeout. */
u_int32_t st_ntxntimeouts; /* Number of transaction timeouts. */
u_int32_t st_objs_wait; /* Object lock granted after wait. */
u_int32_t st_objs_nowait; /* Object lock granted without wait. */
u_int32_t st_lockers_wait; /* Locker lock granted after wait. */
u_int32_t st_lockers_nowait; /* Locker lock granted without wait. */
u_int32_t st_locks_wait; /* Lock lock granted after wait. */
u_int32_t st_locks_nowait; /* Lock lock granted without wait. */
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_hash_len; /* Max length of bucket. */
roff_t st_regsize; /* Region size. */
#endif
};
struct __db_lock_hstat {
u_int32_t st_nrequests; /* Number of lock gets. */
u_int32_t st_nreleases; /* Number of lock puts. */
u_int32_t st_nupgrade; /* Number of lock upgrades. */
u_int32_t st_ndowngrade; /* Number of lock downgrades. */
u_int32_t st_lock_wait; /* Lock conflicts w/ subsequent wait */
u_int32_t st_lock_nowait; /* Lock conflicts w/o subsequent wait */
u_int32_t st_nlocktimeouts; /* Number of lock timeouts. */
u_int32_t st_ntxntimeouts; /* Number of transaction timeouts. */
u_int32_t st_hash_len; /* Max length of bucket. */
};
/*
* DB_LOCK_ILOCK --
* Internal DB access method lock.
*/
struct __db_ilock {
db_pgno_t pgno; /* Page being locked. */
u_int8_t fileid[DB_FILE_ID_LEN];/* File id. */
#define DB_HANDLE_LOCK 1
#define DB_RECORD_LOCK 2
#define DB_PAGE_LOCK 3
u_int32_t type; /* Type of lock. */
};
/*
* DB_LOCK --
* The structure is allocated by the caller and filled in during a
* lock_get request (or a lock_vec/DB_LOCK_GET).
*/
struct __db_lock_u {
roff_t off; /* Offset of the lock in the region */
u_int32_t ndx; /* Index of the object referenced by
* this lock; used for locking. */
u_int32_t gen; /* Generation number of this lock. */
db_lockmode_t mode; /* mode of this lock. */
};
/* Lock request structure. */
struct __db_lockreq {
db_lockop_t op; /* Operation. */
db_lockmode_t mode; /* Requested mode. */
db_timeout_t timeout; /* Time to expire lock. */
DBT *obj; /* Object being locked. */
DB_LOCK lock; /* Lock returned. */
};
/*******************************************************
* Logging.
*******************************************************/
#define DB_LOGVERSION 13 /* Current log version. */
#define DB_LOGOLDVER 8 /* Oldest log version supported. */
#define DB_LOGMAGIC 0x040988
/* Flag values for DB_ENV->log_archive(). */
#define DB_ARCH_ABS 0x001 /* Absolute pathnames. */
#define DB_ARCH_DATA 0x002 /* Data files. */
#define DB_ARCH_LOG 0x004 /* Log files. */
#define DB_ARCH_REMOVE 0x008 /* Remove log files. */
/* Flag values for DB_ENV->log_put(). */
#define DB_FLUSH 0x001 /* Flush data to disk (public). */
#define DB_LOG_CHKPNT 0x002 /* Flush supports a checkpoint */
#define DB_LOG_COMMIT 0x004 /* Flush supports a commit */
#define DB_LOG_NOCOPY 0x008 /* Don't copy data */
#define DB_LOG_NOT_DURABLE 0x010 /* Do not log; keep in memory */
#define DB_LOG_WRNOSYNC 0x020 /* Write, don't sync log_put */
/*
* A DB_LSN has two parts, a fileid which identifies a specific file, and an
* offset within that file. The fileid is an unsigned 4-byte quantity that
* uniquely identifies a file within the log directory -- currently a simple
* counter inside the log. The offset is also an unsigned 4-byte value. The
* log manager guarantees the offset is never more than 4 bytes by switching
* to a new log file before the maximum length imposed by an unsigned 4-byte
* offset is reached.
*/
struct __db_lsn {
u_int32_t file; /* File ID. */
u_int32_t offset; /* File offset. */
};
/*
* Application-specified log record types start at DB_user_BEGIN, and must not
* equal or exceed DB_debug_FLAG.
*
* DB_debug_FLAG is the high-bit of the u_int32_t that specifies a log record
* type. If the flag is set, it's a log record that was logged for debugging
* purposes only, even if it reflects a database change -- the change was part
* of a non-durable transaction.
*/
#define DB_user_BEGIN 10000
#define DB_debug_FLAG 0x80000000
/*
* DB_LOGC --
* Log cursor.
*/
struct __db_log_cursor {
DB_ENV *dbenv; /* Enclosing dbenv. */
DB_FH *fhp; /* File handle. */
DB_LSN lsn; /* Cursor: LSN */
u_int32_t len; /* Cursor: record length */
u_int32_t prev; /* Cursor: previous record's offset */
DBT dbt; /* Return DBT. */
DB_LSN p_lsn; /* Persist LSN. */
u_int32_t p_version; /* Persist version. */
u_int8_t *bp; /* Allocated read buffer. */
u_int32_t bp_size; /* Read buffer length in bytes. */
u_int32_t bp_rlen; /* Read buffer valid data length. */
DB_LSN bp_lsn; /* Read buffer first byte LSN. */
u_int32_t bp_maxrec; /* Max record length in the log file. */
/* DB_LOGC PUBLIC HANDLE LIST BEGIN */
int (*close) __P((DB_LOGC *, u_int32_t));
int (*get) __P((DB_LOGC *, DB_LSN *, DBT *, u_int32_t));
int (*version) __P((DB_LOGC *, u_int32_t *, u_int32_t));
/* DB_LOGC PUBLIC HANDLE LIST END */
#define DB_LOG_DISK 0x01 /* Log record came from disk. */
#define DB_LOG_LOCKED 0x02 /* Log region already locked */
#define DB_LOG_SILENT_ERR 0x04 /* Turn-off error messages. */
u_int32_t flags;
};
/* Log statistics structure. */
struct __db_log_stat {
u_int32_t st_magic; /* Log file magic number. */
u_int32_t st_version; /* Log file version number. */
int st_mode; /* Log file permissions mode. */
u_int32_t st_lg_bsize; /* Log buffer size. */
u_int32_t st_lg_size; /* Log file size. */
u_int32_t st_wc_bytes; /* Bytes to log since checkpoint. */
u_int32_t st_wc_mbytes; /* Megabytes to log since checkpoint. */
#ifndef __TEST_DB_NO_STATISTICS
u_int32_t st_record; /* Records entered into the log. */
u_int32_t st_w_bytes; /* Bytes to log. */
u_int32_t st_w_mbytes; /* Megabytes to log. */
u_int32_t st_wcount; /* Total I/O writes to the log. */
u_int32_t st_wcount_fill; /* Overflow writes to the log. */
u_int32_t st_rcount; /* Total I/O reads from the log. */
u_int32_t st_scount; /* Total syncs to the log. */
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_cur_file; /* Current log file number. */
u_int32_t st_cur_offset; /* Current log file offset. */
u_int32_t st_disk_file; /* Known on disk log file number. */
u_int32_t st_disk_offset; /* Known on disk log file offset. */
u_int32_t st_maxcommitperflush; /* Max number of commits in a flush. */
u_int32_t st_mincommitperflush; /* Min number of commits in a flush. */
roff_t st_regsize; /* Region size. */
#endif
};
/*
* We need to record the first log record of a transaction. For user
* defined logging this macro returns the place to put that information,
* if it is need in rlsnp, otherwise it leaves it unchanged. We also
* need to track the last record of the transaction, this returns the
* place to put that info.
*/
#define DB_SET_TXN_LSNP(txn, blsnp, llsnp) \
((txn)->set_txn_lsnp(txn, blsnp, llsnp))
/*******************************************************
* Shared buffer cache (mpool).
*******************************************************/
/* Flag values for DB_MPOOLFILE->get. */
#define DB_MPOOL_CREATE 0x001 /* Create a page. */
#define DB_MPOOL_DIRTY 0x002 /* Get page for an update. */
#define DB_MPOOL_EDIT 0x004 /* Modify without copying. */
#define DB_MPOOL_FREE 0x008 /* Free page if present. */
#define DB_MPOOL_LAST 0x010 /* Return the last page. */
#define DB_MPOOL_NEW 0x020 /* Create a new page. */
/* Undocumented flag value for DB_MPOOLFILE->close. */
#define DB_MPOOL_DISCARD 0x001 /* Discard file. */
/* Flags values for DB_MPOOLFILE->set_flags. */
#define DB_MPOOL_NOFILE 0x001 /* Never open a backing file. */
#define DB_MPOOL_UNLINK 0x002 /* Unlink the file on last close. */
/* Priority values for DB_MPOOLFILE->{put,set_priority}. */
typedef enum {
DB_PRIORITY_UNCHANGED=0,
DB_PRIORITY_VERY_LOW=1,
DB_PRIORITY_LOW=2,
DB_PRIORITY_DEFAULT=3,
DB_PRIORITY_HIGH=4,
DB_PRIORITY_VERY_HIGH=5
} DB_CACHE_PRIORITY;
/* Per-process DB_MPOOLFILE information. */
struct __db_mpoolfile {
DB_FH *fhp; /* Underlying file handle. */
/*
* !!!
* The ref, pinref and q fields are protected by the region lock.
*/
u_int32_t ref; /* Reference count. */
u_int32_t pinref; /* Pinned block reference count. */
/*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_ENTRY(__db_mpoolfile) q;
*/
struct {
struct __db_mpoolfile *tqe_next;
struct __db_mpoolfile **tqe_prev;
} q; /* Linked list of DB_MPOOLFILE's. */
/*
* !!!
* The rest of the fields (with the exception of the MP_FLUSH flag)
* are not thread-protected, even when they may be modified at any
* time by the application. The reason is the DB_MPOOLFILE handle
* is single-threaded from the viewpoint of the application, and so
* the only fields needing to be thread-protected are those accessed
* by checkpoint or sync threads when using DB_MPOOLFILE structures
* to flush buffers from the cache.
*/
DB_ENV *dbenv; /* Overlying DB_ENV. */
MPOOLFILE *mfp; /* Underlying MPOOLFILE. */
u_int32_t clear_len; /* Cleared length on created pages. */
u_int8_t /* Unique file ID. */
fileid[DB_FILE_ID_LEN];
int ftype; /* File type. */
int32_t lsn_offset; /* LSN offset in page. */
u_int32_t gbytes, bytes; /* Maximum file size. */
DBT *pgcookie; /* Byte-string passed to pgin/pgout. */
int32_t priority; /* Cache priority. */
void *addr; /* Address of mmap'd region. */
size_t len; /* Length of mmap'd region. */
u_int32_t config_flags; /* Flags to DB_MPOOLFILE->set_flags. */
/* DB_MPOOLFILE PUBLIC HANDLE LIST BEGIN */
int (*close) __P((DB_MPOOLFILE *, u_int32_t));
int (*get)
__P((DB_MPOOLFILE *, db_pgno_t *, DB_TXN *, u_int32_t, void *));
int (*get_clear_len) __P((DB_MPOOLFILE *, u_int32_t *));
int (*get_fileid) __P((DB_MPOOLFILE *, u_int8_t *));
int (*get_flags) __P((DB_MPOOLFILE *, u_int32_t *));
int (*get_ftype) __P((DB_MPOOLFILE *, int *));
int (*get_last_pgno) __P((DB_MPOOLFILE *, db_pgno_t *));
int (*get_lsn_offset) __P((DB_MPOOLFILE *, int32_t *));
int (*get_maxsize) __P((DB_MPOOLFILE *, u_int32_t *, u_int32_t *));
int (*get_pgcookie) __P((DB_MPOOLFILE *, DBT *));
int (*get_priority) __P((DB_MPOOLFILE *, DB_CACHE_PRIORITY *));
int (*open) __P((DB_MPOOLFILE *, const char *, u_int32_t, int, size_t));
int (*put) __P((DB_MPOOLFILE *, void *, DB_CACHE_PRIORITY, u_int32_t));
int (*set_clear_len) __P((DB_MPOOLFILE *, u_int32_t));
int (*set_fileid) __P((DB_MPOOLFILE *, u_int8_t *));
int (*set_flags) __P((DB_MPOOLFILE *, u_int32_t, int));
int (*set_ftype) __P((DB_MPOOLFILE *, int));
int (*set_lsn_offset) __P((DB_MPOOLFILE *, int32_t));
int (*set_maxsize) __P((DB_MPOOLFILE *, u_int32_t, u_int32_t));
int (*set_pgcookie) __P((DB_MPOOLFILE *, DBT *));
int (*set_priority) __P((DB_MPOOLFILE *, DB_CACHE_PRIORITY));
int (*sync) __P((DB_MPOOLFILE *));
/* DB_MPOOLFILE PUBLIC HANDLE LIST END */
/*
* MP_FILEID_SET, MP_OPEN_CALLED and MP_READONLY do not need to be
* thread protected because they are initialized before the file is
* linked onto the per-process lists, and never modified.
*
* MP_FLUSH is thread protected because it is potentially read/set by
* multiple threads of control.
*/
#define MP_FILEID_SET 0x001 /* Application supplied a file ID. */
#define MP_FLUSH 0x002 /* Was opened to flush a buffer. */
#define MP_MULTIVERSION 0x004 /* Opened for multiversion access. */
#define MP_OPEN_CALLED 0x008 /* File opened. */
#define MP_READONLY 0x010 /* File is readonly. */
u_int32_t flags;
};
/* Mpool statistics structure. */
struct __db_mpool_stat {
u_int32_t st_gbytes; /* Total cache size: GB. */
u_int32_t st_bytes; /* Total cache size: B. */
u_int32_t st_ncache; /* Number of cache regions. */
u_int32_t st_max_ncache; /* Maximum number of regions. */
size_t st_mmapsize; /* Maximum file size for mmap. */
int st_maxopenfd; /* Maximum number of open fd's. */
int st_maxwrite; /* Maximum buffers to write. */
db_timeout_t st_maxwrite_sleep; /* Sleep after writing max buffers. */
u_int32_t st_pages; /* Total number of pages. */
#ifndef __TEST_DB_NO_STATISTICS
u_int32_t st_map; /* Pages from mapped files. */
u_int32_t st_cache_hit; /* Pages found in the cache. */
u_int32_t st_cache_miss; /* Pages not found in the cache. */
u_int32_t st_page_create; /* Pages created in the cache. */
u_int32_t st_page_in; /* Pages read in. */
u_int32_t st_page_out; /* Pages written out. */
u_int32_t st_ro_evict; /* Clean pages forced from the cache. */
u_int32_t st_rw_evict; /* Dirty pages forced from the cache. */
u_int32_t st_page_trickle; /* Pages written by memp_trickle. */
u_int32_t st_page_clean; /* Clean pages. */
u_int32_t st_page_dirty; /* Dirty pages. */
u_int32_t st_hash_buckets; /* Number of hash buckets. */
u_int32_t st_hash_searches; /* Total hash chain searches. */
u_int32_t st_hash_longest; /* Longest hash chain searched. */
u_int32_t st_hash_examined; /* Total hash entries searched. */
u_int32_t st_hash_nowait; /* Hash lock granted with nowait. */
u_int32_t st_hash_wait; /* Hash lock granted after wait. */
u_int32_t st_hash_max_nowait; /* Max hash lock granted with nowait. */
u_int32_t st_hash_max_wait; /* Max hash lock granted after wait. */
u_int32_t st_region_nowait; /* Region lock granted with nowait. */
u_int32_t st_region_wait; /* Region lock granted after wait. */
u_int32_t st_mvcc_frozen; /* Buffers frozen. */
u_int32_t st_mvcc_thawed; /* Buffers thawed. */
u_int32_t st_mvcc_freed; /* Frozen buffers freed. */
u_int32_t st_alloc; /* Number of page allocations. */
u_int32_t st_alloc_buckets; /* Buckets checked during allocation. */
u_int32_t st_alloc_max_buckets; /* Max checked during allocation. */
u_int32_t st_alloc_pages; /* Pages checked during allocation. */
u_int32_t st_alloc_max_pages; /* Max checked during allocation. */
u_int32_t st_io_wait; /* Thread waited on buffer I/O. */
roff_t st_regsize; /* Region size. */
#endif
};
/* Mpool file statistics structure. */
struct __db_mpool_fstat {
char *file_name; /* File name. */
u_int32_t st_pagesize; /* Page size. */
#ifndef __TEST_DB_NO_STATISTICS
u_int32_t st_map; /* Pages from mapped files. */
u_int32_t st_cache_hit; /* Pages found in the cache. */
u_int32_t st_cache_miss; /* Pages not found in the cache. */
u_int32_t st_page_create; /* Pages created in the cache. */
u_int32_t st_page_in; /* Pages read in. */
u_int32_t st_page_out; /* Pages written out. */
#endif
};
/*******************************************************
* Transactions and recovery.
*******************************************************/
#define DB_TXNVERSION 1
typedef enum {
DB_TXN_ABORT=0, /* Public. */
DB_TXN_APPLY=1, /* Public. */
DB_TXN_BACKWARD_ALLOC=2, /* Internal. */
DB_TXN_BACKWARD_ROLL=3, /* Public. */
DB_TXN_FORWARD_ROLL=4, /* Public. */
DB_TXN_OPENFILES=5, /* Internal. */
DB_TXN_POPENFILES=6, /* Internal. */
DB_TXN_PRINT=7 /* Public. */
} db_recops;
/*
* BACKWARD_ALLOC is used during the forward pass to pick up any aborted
* allocations for files that were created during the forward pass.
* The main difference between _ALLOC and _ROLL is that the entry for
* the file not exist during the rollforward pass.
*/
#define DB_UNDO(op) ((op) == DB_TXN_ABORT || \
(op) == DB_TXN_BACKWARD_ROLL || (op) == DB_TXN_BACKWARD_ALLOC)
#define DB_REDO(op) ((op) == DB_TXN_FORWARD_ROLL || (op) == DB_TXN_APPLY)
struct __db_txn {
DB_TXNMGR *mgrp; /* Pointer to transaction manager. */
DB_TXN *parent; /* Pointer to transaction's parent. */
u_int32_t txnid; /* Unique transaction id. */
char *name; /* Transaction name. */
DB_LOCKER *locker; /* Locker for this txn. */
db_threadid_t tid; /* Thread id for use in MT XA. */
void *td; /* Detail structure within region. */
db_timeout_t lock_timeout; /* Timeout for locks for this txn. */
db_timeout_t expire; /* Time transaction expires. */
void *txn_list; /* Undo information for parent. */
/*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_ENTRY(__db_txn) links;
* TAILQ_ENTRY(__db_txn) xalinks;
*/
struct {
struct __db_txn *tqe_next;
struct __db_txn **tqe_prev;
} links; /* Links transactions off manager. */
struct {
struct __db_txn *tqe_next;
struct __db_txn **tqe_prev;
} xalinks; /* Links active XA transactions. */
/*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_HEAD(__kids, __db_txn) kids;
*/
struct __kids {
struct __db_txn *tqh_first;
struct __db_txn **tqh_last;
} kids;
/*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_HEAD(__events, __txn_event) events;
*/
struct {
struct __txn_event *tqh_first;
struct __txn_event **tqh_last;
} events; /* Links deferred events. */
/*
* !!!
* Explicit representations of structures from queue.h.
* STAILQ_HEAD(__logrec, __txn_logrec) logs;
*/
struct {
struct __txn_logrec *stqh_first;
struct __txn_logrec **stqh_last;
} logs; /* Links in memory log records. */
/*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_ENTRY(__db_txn) klinks;
*/
struct {
struct __db_txn *tqe_next;
struct __db_txn **tqe_prev;
} klinks;
void *api_internal; /* C++ API private. */
void *xml_internal; /* XML API private. */
u_int32_t cursors; /* Number of cursors open for txn */
/* DB_TXN PUBLIC HANDLE LIST BEGIN */
int (*abort) __P((DB_TXN *));
int (*commit) __P((DB_TXN *, u_int32_t));
int (*discard) __P((DB_TXN *, u_int32_t));
int (*get_name) __P((DB_TXN *, const char **));
u_int32_t (*id) __P((DB_TXN *));
int (*prepare) __P((DB_TXN *, u_int8_t *));
int (*set_name) __P((DB_TXN *, const char *));
int (*set_timeout) __P((DB_TXN *, db_timeout_t, u_int32_t));
/* DB_TXN PUBLIC HANDLE LIST END */
/* DB_TXN PRIVATE HANDLE LIST BEGIN */
void (*set_txn_lsnp) __P((DB_TXN *txn, DB_LSN **, DB_LSN **));
/* DB_TXN PRIVATE HANDLE LIST END */
#define TXN_CHILDCOMMIT 0x0001 /* Txn has committed. */
#define TXN_CDSGROUP 0x0002 /* CDS group handle. */
#define TXN_COMPENSATE 0x0004 /* Compensating transaction. */
#define TXN_DEADLOCK 0x0008 /* Txn has deadlocked. */
#define TXN_LOCKTIMEOUT 0x0010 /* Txn has a lock timeout. */
#define TXN_MALLOC 0x0020 /* Structure allocated by TXN system. */
#define TXN_NOSYNC 0x0040 /* Do not sync on prepare and commit. */
#define TXN_NOWAIT 0x0080 /* Do not wait on locks. */
#define TXN_PRIVATE 0x0100 /* Txn owned by cursor.. */
#define TXN_READ_COMMITTED 0x0200 /* Txn has degree 2 isolation. */
#define TXN_READ_UNCOMMITTED 0x0400 /* Txn has degree 1 isolation. */
#define TXN_RESTORED 0x0800 /* Txn has been restored. */
#define TXN_SNAPSHOT 0x1000 /* Snapshot Isolation. */
#define TXN_SYNC 0x2000 /* Write and sync on prepare/commit. */
#define TXN_WRITE_NOSYNC 0x4000 /* Write only on prepare/commit. */
u_int32_t flags;
};
#define TXN_SYNC_FLAGS (TXN_SYNC | TXN_NOSYNC | TXN_WRITE_NOSYNC)
/*
* Structure used for two phase commit interface. Berkeley DB support for two
* phase commit is compatible with the X/Open XA interface.
*
* The XA #define XIDDATASIZE defines the size of a global transaction ID. We
* have our own version here (for name space reasons) which must have the same
* value.
*/
#define DB_XIDDATASIZE 128
struct __db_preplist {
DB_TXN *txn;
u_int8_t gid[DB_XIDDATASIZE];
};
/* Transaction statistics structure. */
struct __db_txn_active {
u_int32_t txnid; /* Transaction ID */
u_int32_t parentid; /* Transaction ID of parent */
pid_t pid; /* Process owning txn ID */
db_threadid_t tid; /* Thread owning txn ID */
DB_LSN lsn; /* LSN when transaction began */
DB_LSN read_lsn; /* Read LSN for MVCC */
u_int32_t mvcc_ref; /* MVCC reference count */
#define TXN_ABORTED 1
#define TXN_COMMITTED 2
#define TXN_PREPARED 3
#define TXN_RUNNING 4
u_int32_t status; /* Status of the transaction */
#define TXN_XA_ABORTED 1
#define TXN_XA_DEADLOCKED 2
#define TXN_XA_ENDED 3
#define TXN_XA_PREPARED 4
#define TXN_XA_STARTED 5
#define TXN_XA_SUSPENDED 6
u_int32_t xa_status; /* XA status */
u_int8_t xid[DB_XIDDATASIZE]; /* Global transaction ID */
char name[51]; /* 50 bytes of name, nul termination */
};
struct __db_txn_stat {
u_int32_t st_nrestores; /* number of restored transactions
after recovery. */
#ifndef __TEST_DB_NO_STATISTICS
DB_LSN st_last_ckp; /* lsn of the last checkpoint */
time_t st_time_ckp; /* time of last checkpoint */
u_int32_t st_last_txnid; /* last transaction id given out */
u_int32_t st_maxtxns; /* maximum txns possible */
u_int32_t st_naborts; /* number of aborted transactions */
u_int32_t st_nbegins; /* number of begun transactions */
u_int32_t st_ncommits; /* number of committed transactions */
u_int32_t st_nactive; /* number of active transactions */
u_int32_t st_nsnapshot; /* number of snapshot transactions */
u_int32_t st_maxnactive; /* maximum active transactions */
u_int32_t st_maxnsnapshot; /* maximum snapshot transactions */
DB_TXN_ACTIVE *st_txnarray; /* array of active transactions */
u_int32_t st_region_wait; /* Region lock granted after wait. */
u_int32_t st_region_nowait; /* Region lock granted without wait. */
roff_t st_regsize; /* Region size. */
#endif
};
/*******************************************************
* Replication.
*******************************************************/
/* Special, out-of-band environment IDs. */
#define DB_EID_BROADCAST -1
#define DB_EID_INVALID -2
/* rep_config flag values. */
#define DB_REP_CONF_BULK 0x0001 /* Bulk transfer. */
#define DB_REP_CONF_DELAYCLIENT 0x0002 /* Delay client synchronization. */
#define DB_REP_CONF_NOAUTOINIT 0x0004 /* No automatic client init. */
#define DB_REP_CONF_NOWAIT 0x0008 /* Don't wait, return error. */
/*
* Operation code values for rep_start and/or repmgr_start. Just one of the
* following values should be passed in the flags parameter. (If we ever need
* additional, independent bit flags for these methods, we can start allocating
* them from the high-order byte of the flags word, as we currently do elsewhere
* for DB_AFTER through DB_WRITELOCK and DB_AUTO_COMMIT, etc.)
*/
#define DB_REP_CLIENT 1
#define DB_REP_ELECTION 2
#define DB_REP_MASTER 3
#define DB_REPFLAGS_MASK 0x000000ff /* Mask for rep modes. */
#define DB_REP_DEFAULT_PRIORITY 100
/* Acknowledgement policies. */
#define DB_REPMGR_ACKS_ALL 1
#define DB_REPMGR_ACKS_ALL_PEERS 2
#define DB_REPMGR_ACKS_NONE 3
#define DB_REPMGR_ACKS_ONE 4
#define DB_REPMGR_ACKS_ONE_PEER 5
#define DB_REPMGR_ACKS_QUORUM 6
/* Replication timeout configuration values. */
#define DB_REP_ACK_TIMEOUT 1 /* RepMgr acknowledgements. */
#define DB_REP_CHECKPOINT_DELAY 2 /* RepMgr acknowledgements. */
#define DB_REP_CONNECTION_RETRY 3 /* RepMgr connections. */
#define DB_REP_ELECTION_RETRY 4 /* RepMgr elect retries. */
#define DB_REP_ELECTION_TIMEOUT 5 /* Rep normal elections. */
#define DB_REP_FULL_ELECTION_TIMEOUT 6 /* Rep full elections. */
#define DB_REP_LEASE_TIMEOUT 7 /* Master leases. */
/* Event notification types. */
#define DB_EVENT_NO_SUCH_EVENT 0 /* out-of-band sentinel value */
#define DB_EVENT_PANIC 1
#define DB_EVENT_REP_CLIENT 2
#define DB_EVENT_REP_ELECTED 3
#define DB_EVENT_REP_MASTER 4
#define DB_EVENT_REP_NEWMASTER 5
#define DB_EVENT_REP_PERM_FAILED 6
#define DB_EVENT_REP_STARTUPDONE 7
#define DB_EVENT_WRITE_FAILED 8
/* Flag value for repmgr_add_remote_site. */
#define DB_REPMGR_PEER 0x01
/* Replication Manager site status. */
struct __db_repmgr_site {
int eid;
char *host;
u_int port;
#define DB_REPMGR_CONNECTED 0x01
#define DB_REPMGR_DISCONNECTED 0x02
u_int32_t status;
};
/* Replication statistics. */
struct __db_rep_stat {
/* !!!
* Many replication statistics fields cannot be protected by a mutex
* without an unacceptable performance penalty, since most message
* processing is done without the need to hold a region-wide lock.
* Fields whose comments end with a '+' may be updated without holding
* the replication or log mutexes (as appropriate), and thus may be
* off somewhat (or, on unreasonable architectures under unlucky
* circumstances, garbaged).
*/
u_int32_t st_log_queued; /* Log records currently queued.+ */
u_int32_t st_startup_complete; /* Site completed client sync-up. */
#ifndef __TEST_DB_NO_STATISTICS
u_int32_t st_status; /* Current replication status. */
DB_LSN st_next_lsn; /* Next LSN to use or expect. */
DB_LSN st_waiting_lsn; /* LSN we're awaiting, if any. */
db_pgno_t st_next_pg; /* Next pg we expect. */
db_pgno_t st_waiting_pg; /* pg we're awaiting, if any. */
u_int32_t st_dupmasters; /* # of times a duplicate master
condition was detected.+ */
int st_env_id; /* Current environment ID. */
int st_env_priority; /* Current environment priority. */
u_int32_t st_bulk_fills; /* Bulk buffer fills. */
u_int32_t st_bulk_overflows; /* Bulk buffer overflows. */
u_int32_t st_bulk_records; /* Bulk records stored. */
u_int32_t st_bulk_transfers; /* Transfers of bulk buffers. */
u_int32_t st_client_rerequests; /* Number of forced rerequests. */
u_int32_t st_client_svc_req; /* Number of client service requests
received by this client. */
u_int32_t st_client_svc_miss; /* Number of client service requests
missing on this client. */
u_int32_t st_gen; /* Current generation number. */
u_int32_t st_egen; /* Current election gen number. */
u_int32_t st_log_duplicated; /* Log records received multiply.+ */
u_int32_t st_log_queued_max; /* Max. log records queued at once.+ */
u_int32_t st_log_queued_total; /* Total # of log recs. ever queued.+ */
u_int32_t st_log_records; /* Log records received and put.+ */
u_int32_t st_log_requested; /* Log recs. missed and requested.+ */
int st_master; /* Env. ID of the current master. */
u_int32_t st_master_changes; /* # of times we've switched masters. */
u_int32_t st_msgs_badgen; /* Messages with a bad generation #.+ */
u_int32_t st_msgs_processed; /* Messages received and processed.+ */
u_int32_t st_msgs_recover; /* Messages ignored because this site
was a client in recovery.+ */
u_int32_t st_msgs_send_failures;/* # of failed message sends.+ */
u_int32_t st_msgs_sent; /* # of successful message sends.+ */
u_int32_t st_newsites; /* # of NEWSITE msgs. received.+ */
int st_nsites; /* Current number of sites we will
assume during elections. */
u_int32_t st_nthrottles; /* # of times we were throttled. */
u_int32_t st_outdated; /* # of times we detected and returned
an OUTDATED condition.+ */
u_int32_t st_pg_duplicated; /* Pages received multiply.+ */
u_int32_t st_pg_records; /* Pages received and stored.+ */
u_int32_t st_pg_requested; /* Pages missed and requested.+ */
u_int32_t st_txns_applied; /* # of transactions applied.+ */
u_int32_t st_startsync_delayed; /* # of STARTSYNC msgs delayed.+ */
/* Elections generally. */
u_int32_t st_elections; /* # of elections held.+ */
u_int32_t st_elections_won; /* # of elections won by this site.+ */
/* Statistics about an in-progress election. */
int st_election_cur_winner; /* Current front-runner. */
u_int32_t st_election_gen; /* Election generation number. */
DB_LSN st_election_lsn; /* Max. LSN of current winner. */
int st_election_nsites; /* # of "registered voters". */
int st_election_nvotes; /* # of "registered voters" needed. */
int st_election_priority; /* Current election priority. */
int st_election_status; /* Current election status. */
u_int32_t st_election_tiebreaker;/* Election tiebreaker value. */
int st_election_votes; /* Votes received in this round. */
u_int32_t st_election_sec; /* Last election time seconds. */
u_int32_t st_election_usec; /* Last election time useconds. */
#endif
};
/* Replication Manager statistics. */
struct __db_repmgr_stat {
u_int32_t st_perm_failed; /* # of insufficiently ack'ed msgs. */
u_int32_t st_msgs_queued; /* # msgs queued for network delay. */
u_int32_t st_msgs_dropped; /* # msgs discarded due to excessive
queue length. */
u_int32_t st_connection_drop; /* Existing connections dropped. */
u_int32_t st_connect_fail; /* Failed new connection attempts. */
};
/*******************************************************
* Sequences.
*******************************************************/
/*
* The storage record for a sequence.
*/
struct __db_seq_record {
u_int32_t seq_version; /* Version size/number. */
#define DB_SEQ_DEC 0x00000001 /* Decrement sequence. */
#define DB_SEQ_INC 0x00000002 /* Increment sequence. */
#define DB_SEQ_RANGE_SET 0x00000004 /* Range set (internal). */
#define DB_SEQ_WRAP 0x00000008 /* Wrap sequence at min/max. */
#define DB_SEQ_WRAPPED 0x00000010 /* Just wrapped (internal). */
u_int32_t flags; /* Flags. */
db_seq_t seq_value; /* Current value. */
db_seq_t seq_max; /* Max permitted. */
db_seq_t seq_min; /* Min permitted. */
};
/*
* Handle for a sequence object.
*/
struct __db_sequence {
DB *seq_dbp; /* DB handle for this sequence. */
db_mutex_t mtx_seq; /* Mutex if sequence is threaded. */
DB_SEQ_RECORD *seq_rp; /* Pointer to current data. */
DB_SEQ_RECORD seq_record; /* Data from DB_SEQUENCE. */
int32_t seq_cache_size; /* Number of values cached. */
db_seq_t seq_last_value; /* Last value cached. */
DBT seq_key; /* DBT pointing to sequence key. */
DBT seq_data; /* DBT pointing to seq_record. */
/* API-private structure: used by C++ and Java. */
void *api_internal;
/* DB_SEQUENCE PUBLIC HANDLE LIST BEGIN */
int (*close) __P((DB_SEQUENCE *, u_int32_t));
int (*get) __P((DB_SEQUENCE *,
DB_TXN *, int32_t, db_seq_t *, u_int32_t));
int (*get_cachesize) __P((DB_SEQUENCE *, int32_t *));
int (*get_db) __P((DB_SEQUENCE *, DB **));
int (*get_flags) __P((DB_SEQUENCE *, u_int32_t *));
int (*get_key) __P((DB_SEQUENCE *, DBT *));
int (*get_range) __P((DB_SEQUENCE *,
db_seq_t *, db_seq_t *));
int (*initial_value) __P((DB_SEQUENCE *, db_seq_t));
int (*open) __P((DB_SEQUENCE *,
DB_TXN *, DBT *, u_int32_t));
int (*remove) __P((DB_SEQUENCE *, DB_TXN *, u_int32_t));
int (*set_cachesize) __P((DB_SEQUENCE *, int32_t));
int (*set_flags) __P((DB_SEQUENCE *, u_int32_t));
int (*set_range) __P((DB_SEQUENCE *, db_seq_t, db_seq_t));
int (*stat) __P((DB_SEQUENCE *,
DB_SEQUENCE_STAT **, u_int32_t));
int (*stat_print) __P((DB_SEQUENCE *, u_int32_t));
/* DB_SEQUENCE PUBLIC HANDLE LIST END */
};
struct __db_seq_stat {
u_int32_t st_wait; /* Sequence lock granted w/o wait. */
u_int32_t st_nowait; /* Sequence lock granted after wait. */
db_seq_t st_current; /* Current value in db. */
db_seq_t st_value; /* Current cached value. */
db_seq_t st_last_value; /* Last cached value. */
db_seq_t st_min; /* Minimum value. */
db_seq_t st_max; /* Maximum value. */
int32_t st_cache_size; /* Cache size. */
u_int32_t st_flags; /* Flag value. */
};
/*******************************************************
* Access methods.
*******************************************************/
typedef enum {
DB_BTREE=1,
DB_HASH=2,
DB_RECNO=3,
DB_QUEUE=4,
DB_UNKNOWN=5 /* Figure it out on open. */
} DBTYPE;
#define DB_RENAMEMAGIC 0x030800 /* File has been renamed. */
#define DB_BTREEVERSION 9 /* Current btree version. */
#define DB_BTREEOLDVER 8 /* Oldest btree version supported. */
#define DB_BTREEMAGIC 0x053162
#define DB_HASHVERSION 9 /* Current hash version. */
#define DB_HASHOLDVER 7 /* Oldest hash version supported. */
#define DB_HASHMAGIC 0x061561
#define DB_QAMVERSION 4 /* Current queue version. */
#define DB_QAMOLDVER 3 /* Oldest queue version supported. */
#define DB_QAMMAGIC 0x042253
#define DB_SEQUENCE_VERSION 2 /* Current sequence version. */
#define DB_SEQUENCE_OLDVER 1 /* Oldest sequence version supported. */
/*
* DB access method and cursor operation values. Each value is an operation
* code to which additional bit flags are added.
*/
#define DB_AFTER 1 /* Dbc.put */
#define DB_APPEND 2 /* Db.put */
#define DB_BEFORE 3 /* Dbc.put */
#define DB_CONSUME 4 /* Db.get */
#define DB_CONSUME_WAIT 5 /* Db.get */
#define DB_CURRENT 6 /* Dbc.get, Dbc.put, DbLogc.get */
#define DB_FIRST 7 /* Dbc.get, DbLogc->get */
#define DB_GET_BOTH 8 /* Db.get, Dbc.get */
#define DB_GET_BOTHC 9 /* Dbc.get (internal) */
#define DB_GET_BOTH_RANGE 10 /* Db.get, Dbc.get */
#define DB_GET_RECNO 11 /* Dbc.get */
#define DB_JOIN_ITEM 12 /* Dbc.get; don't do primary lookup */
#define DB_KEYFIRST 13 /* Dbc.put */
#define DB_KEYLAST 14 /* Dbc.put */
#define DB_LAST 15 /* Dbc.get, DbLogc->get */
#define DB_NEXT 16 /* Dbc.get, DbLogc->get */
#define DB_NEXT_DUP 17 /* Dbc.get */
#define DB_NEXT_NODUP 18 /* Dbc.get */
#define DB_NODUPDATA 19 /* Db.put, Dbc.put */
#define DB_NOOVERWRITE 20 /* Db.put */
#define DB_NOSYNC 21 /* Db.close */
#define DB_POSITION 22 /* Dbc.dup */
#define DB_PREV 23 /* Dbc.get, DbLogc->get */
#define DB_PREV_DUP 24 /* Dbc.get */
#define DB_PREV_NODUP 25 /* Dbc.get */
#define DB_SET 26 /* Dbc.get, DbLogc->get */
#define DB_SET_RANGE 27 /* Dbc.get */
#define DB_SET_RECNO 28 /* Db.get, Dbc.get */
#define DB_UPDATE_SECONDARY 29 /* Dbc.get, Dbc.del (internal) */
#define DB_WRITECURSOR 30 /* Db.cursor */
#define DB_WRITELOCK 31 /* Db.cursor (internal) */
/* This has to change when the max opcode hits 255. */
#define DB_OPFLAGS_MASK 0x000000ff /* Mask for operations flags. */
/*
* Masks for flags that can be OR'd into DB access method and cursor
* operation values. Three top bits have already been taken:
*
* DB_AUTO_COMMIT 0x02000000
* DB_READ_COMMITTED 0x04000000
* DB_READ_UNCOMMITTED 0x08000000
*/
#define DB_MULTIPLE 0x10000000 /* Return multiple data values. */
#define DB_MULTIPLE_KEY 0x20000000 /* Return multiple data/key pairs. */
#define DB_RMW 0x40000000 /* Acquire write lock immediately. */
/*
* DB (user visible) error return codes.
*
* !!!
* We don't want our error returns to conflict with other packages where
* possible, so pick a base error value that's hopefully not common. We
* document that we own the error name space from -30,800 to -30,999.
*/
/* DB (public) error return codes. */
#define DB_BUFFER_SMALL (-30999)/* User memory too small for return. */
#define DB_DONOTINDEX (-30998)/* "Null" return from 2ndary callbk. */
#define DB_KEYEMPTY (-30997)/* Key/data deleted or never created. */
#define DB_KEYEXIST (-30996)/* The key/data pair already exists. */
#define DB_LOCK_DEADLOCK (-30995)/* Deadlock. */
#define DB_LOCK_NOTGRANTED (-30994)/* Lock unavailable. */
#define DB_LOG_BUFFER_FULL (-30993)/* In-memory log buffer full. */
#define DB_NOSERVER (-30992)/* Server panic return. */
#define DB_NOSERVER_HOME (-30991)/* Bad home sent to server. */
#define DB_NOSERVER_ID (-30990)/* Bad ID sent to server. */
#define DB_NOTFOUND (-30989)/* Key/data pair not found (EOF). */
#define DB_OLD_VERSION (-30988)/* Out-of-date version. */
#define DB_PAGE_NOTFOUND (-30987)/* Requested page not found. */
#define DB_REP_DUPMASTER (-30986)/* There are two masters. */
#define DB_REP_HANDLE_DEAD (-30985)/* Rolled back a commit. */
#define DB_REP_HOLDELECTION (-30984)/* Time to hold an election. */
#define DB_REP_IGNORE (-30983)/* This msg should be ignored.*/
#define DB_REP_ISPERM (-30982)/* Cached not written perm written.*/
#define DB_REP_JOIN_FAILURE (-30981)/* Unable to join replication group. */
#define DB_REP_LEASE_EXPIRED (-30980)/* Master lease has expired. */
#define DB_REP_LOCKOUT (-30979)/* API/Replication lockout now. */
#define DB_REP_NEWSITE (-30978)/* New site entered system. */
#define DB_REP_NOTPERM (-30977)/* Permanent log record not written. */
#define DB_REP_UNAVAIL (-30976)/* Site cannot currently be reached. */
#define DB_RUNRECOVERY (-30975)/* Panic return. */
#define DB_SECONDARY_BAD (-30974)/* Secondary index corrupt. */
#define DB_VERIFY_BAD (-30973)/* Verify failed; bad format. */
#define DB_VERSION_MISMATCH (-30972)/* Environment version mismatch. */
/* DB (private) error return codes. */
#define DB_ALREADY_ABORTED (-30899)
#define DB_DELETED (-30898)/* Recovery file marked deleted. */
#define DB_EVENT_NOT_HANDLED (-30897)/* Forward event to application. */
#define DB_NEEDSPLIT (-30896)/* Page needs to be split. */
#define DB_REP_BULKOVF (-30895)/* Rep bulk buffer overflow. */
#define DB_REP_EGENCHG (-30894)/* Egen changed while in election. */
#define DB_REP_LOGREADY (-30893)/* Rep log ready for recovery. */
#define DB_REP_NEWMASTER (-30892)/* We have learned of a new master. */
#define DB_REP_PAGEDONE (-30891)/* This page was already done. */
#define DB_SURPRISE_KID (-30890)/* Child commit where parent
didn't know it was a parent. */
#define DB_SWAPBYTES (-30889)/* Database needs byte swapping. */
#define DB_TIMEOUT (-30888)/* Timed out waiting for election. */
#define DB_TXN_CKP (-30887)/* Encountered ckp record in log. */
#define DB_VERIFY_FATAL (-30886)/* DB->verify cannot proceed. */
/* Database handle. */
struct __db {
/*******************************************************
* Public: owned by the application.
*******************************************************/
u_int32_t pgsize; /* Database logical page size. */
DB_CACHE_PRIORITY priority; /* Database priority in cache. */
/* Callbacks. */
int (*db_append_recno) __P((DB *, DBT *, db_recno_t));
void (*db_feedback) __P((DB *, int, int));
int (*dup_compare) __P((DB *, const DBT *, const DBT *));
void *app_private; /* Application-private handle. */
/*******************************************************
* Private: owned by DB.
*******************************************************/
DB_ENV *dbenv; /* Backing environment. */
DBTYPE type; /* DB access method type. */
DB_MPOOLFILE *mpf; /* Backing buffer pool. */
db_mutex_t mutex; /* Synchronization for free threading */
char *fname, *dname; /* File/database passed to DB->open. */
u_int32_t open_flags; /* Flags passed to DB->open. */
u_int8_t fileid[DB_FILE_ID_LEN];/* File's unique ID for locking. */
u_int32_t adj_fileid; /* File's unique ID for curs. adj. */
#define DB_LOGFILEID_INVALID -1
FNAME *log_filename; /* File's naming info for logging. */
db_pgno_t meta_pgno; /* Meta page number */
DB_LOCKER *locker; /* Locker for handle locking. */
DB_LOCKER *cur_locker; /* Current handle lock holder. */
DB_TXN *cur_txn; /* Opening transaction. */
DB_LOCKER *associate_locker; /* Locker for DB->associate call. */
DB_LOCK handle_lock; /* Lock held on this handle. */
u_int cl_id; /* RPC: remote client id. */
time_t timestamp; /* Handle timestamp for replication. */
u_int32_t fid_gen; /* Rep generation number for fids. */
/*
* Returned data memory for DB->get() and friends.
*/
DBT my_rskey; /* Secondary key. */
DBT my_rkey; /* [Primary] key. */
DBT my_rdata; /* Data. */
/*
* !!!
* Some applications use DB but implement their own locking outside of
* DB. If they're using fcntl(2) locking on the underlying database
* file, and we open and close a file descriptor for that file, we will
* discard their locks. The DB_FCNTL_LOCKING flag to DB->open is an
* undocumented interface to support this usage which leaves any file
* descriptors we open until DB->close. This will only work with the
* DB->open interface and simple caches, e.g., creating a transaction
* thread may open/close file descriptors this flag doesn't protect.
* Locking with fcntl(2) on a file that you don't own is a very, very
* unsafe thing to do. 'Nuff said.
*/
DB_FH *saved_open_fhp; /* Saved file handle. */
/*
* Linked list of DBP's, linked from the DB_ENV, used to keep track
* of all open db handles for cursor adjustment.
*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_ENTRY(__db) dblistlinks;
*/
struct {
struct __db *tqe_next;
struct __db **tqe_prev;
} dblistlinks;
/*
* Cursor queues.
*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_HEAD(__cq_fq, __dbc) free_queue;
* TAILQ_HEAD(__cq_aq, __dbc) active_queue;
* TAILQ_HEAD(__cq_jq, __dbc) join_queue;
*/
struct __cq_fq {
struct __dbc *tqh_first;
struct __dbc **tqh_last;
} free_queue;
struct __cq_aq {
struct __dbc *tqh_first;
struct __dbc **tqh_last;
} active_queue;
struct __cq_jq {
struct __dbc *tqh_first;
struct __dbc **tqh_last;
} join_queue;
/*
* Secondary index support.
*
* Linked list of secondary indices -- set in the primary.
*
* !!!
* Explicit representations of structures from queue.h.
* LIST_HEAD(s_secondaries, __db);
*/
struct {
struct __db *lh_first;
} s_secondaries;
/*
* List entries for secondaries, and reference count of how many
* threads are updating this secondary (see Dbc.put).
*
* !!!
* Note that these are synchronized by the primary's mutex, but
* filled in in the secondaries.
*
* !!!
* Explicit representations of structures from queue.h.
* LIST_ENTRY(__db) s_links;
*/
struct {
struct __db *le_next;
struct __db **le_prev;
} s_links;
u_int32_t s_refcnt;
/* Secondary callback and free functions -- set in the secondary. */
int (*s_callback) __P((DB *, const DBT *, const DBT *, DBT *));
/* Reference to primary -- set in the secondary. */
DB *s_primary;
#define DB_ASSOC_IMMUTABLE_KEY 0x00000001 /* Secondary key is immutable. */
/* Flags passed to associate -- set in the secondary. */
u_int32_t s_assoc_flags;
/* API-private structure: used by DB 1.85, C++, Java, Perl and Tcl */
void *api_internal;
/* Subsystem-private structure. */
void *bt_internal; /* Btree/Recno access method. */
void *h_internal; /* Hash access method. */
void *q_internal; /* Queue access method. */
void *xa_internal; /* XA. */
/* DB PUBLIC HANDLE LIST BEGIN */
int (*associate) __P((DB *, DB_TXN *, DB *,
int (*)(DB *, const DBT *, const DBT *, DBT *), u_int32_t));
int (*close) __P((DB *, u_int32_t));
int (*compact) __P((DB *,
DB_TXN *, DBT *, DBT *, DB_COMPACT *, u_int32_t, DBT *));
int (*cursor) __P((DB *, DB_TXN *, DBC **, u_int32_t));
int (*del) __P((DB *, DB_TXN *, DBT *, u_int32_t));
void (*err) __P((DB *, int, const char *, ...));
void (*errx) __P((DB *, const char *, ...));
int (*exists) __P((DB *, DB_TXN *, DBT *, u_int32_t));
int (*fd) __P((DB *, int *));
int (*get) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
int (*get_bt_minkey) __P((DB *, u_int32_t *));
int (*get_byteswapped) __P((DB *, int *));
int (*get_cachesize) __P((DB *, u_int32_t *, u_int32_t *, int *));
int (*get_dbname) __P((DB *, const char **, const char **));
int (*get_encrypt_flags) __P((DB *, u_int32_t *));
DB_ENV *(*get_env) __P((DB *));
void (*get_errfile) __P((DB *, FILE **));
void (*get_errpfx) __P((DB *, const char **));
int (*get_flags) __P((DB *, u_int32_t *));
int (*get_h_ffactor) __P((DB *, u_int32_t *));
int (*get_h_nelem) __P((DB *, u_int32_t *));
int (*get_lorder) __P((DB *, int *));
DB_MPOOLFILE *(*get_mpf) __P((DB *));
void (*get_msgfile) __P((DB *, FILE **));
int (*get_multiple) __P((DB *));
int (*get_open_flags) __P((DB *, u_int32_t *));
int (*get_pagesize) __P((DB *, u_int32_t *));
int (*get_priority) __P((DB *, DB_CACHE_PRIORITY *));
int (*get_q_extentsize) __P((DB *, u_int32_t *));
int (*get_re_delim) __P((DB *, int *));
int (*get_re_len) __P((DB *, u_int32_t *));
int (*get_re_pad) __P((DB *, int *));
int (*get_re_source) __P((DB *, const char **));
int (*get_transactional) __P((DB *));
int (*get_type) __P((DB *, DBTYPE *));
int (*join) __P((DB *, DBC **, DBC **, u_int32_t));
int (*key_range)
__P((DB *, DB_TXN *, DBT *, DB_KEY_RANGE *, u_int32_t));
int (*open) __P((DB *,
DB_TXN *, const char *, const char *, DBTYPE, u_int32_t, int));
int (*pget) __P((DB *, DB_TXN *, DBT *, DBT *, DBT *, u_int32_t));
int (*put) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
int (*remove) __P((DB *, const char *, const char *, u_int32_t));
int (*rename) __P((DB *,
const char *, const char *, const char *, u_int32_t));
int (*set_alloc) __P((DB *, void *(*)(size_t),
void *(*)(void *, size_t), void (*)(void *)));
int (*set_append_recno) __P((DB *, int (*)(DB *, DBT *, db_recno_t)));
int (*set_bt_compare)
__P((DB *, int (*)(DB *, const DBT *, const DBT *)));
int (*set_bt_minkey) __P((DB *, u_int32_t));
int (*set_bt_prefix)
__P((DB *, size_t (*)(DB *, const DBT *, const DBT *)));
int (*set_cachesize) __P((DB *, u_int32_t, u_int32_t, int));
int (*set_dup_compare)
__P((DB *, int (*)(DB *, const DBT *, const DBT *)));
int (*set_encrypt) __P((DB *, const char *, u_int32_t));
void (*set_errcall) __P((DB *,
void (*)(const DB_ENV *, const char *, const char *)));
void (*set_errfile) __P((DB *, FILE *));
void (*set_errpfx) __P((DB *, const char *));
int (*set_feedback) __P((DB *, void (*)(DB *, int, int)));
int (*set_flags) __P((DB *, u_int32_t));
int (*set_h_compare)
__P((DB *, int (*)(DB *, const DBT *, const DBT *)));
int (*set_h_ffactor) __P((DB *, u_int32_t));
int (*set_h_hash)
__P((DB *, u_int32_t (*)(DB *, const void *, u_int32_t)));
int (*set_h_nelem) __P((DB *, u_int32_t));
int (*set_lorder) __P((DB *, int));
void (*set_msgcall) __P((DB *, void (*)(const DB_ENV *, const char *)));
void (*set_msgfile) __P((DB *, FILE *));
int (*set_pagesize) __P((DB *, u_int32_t));
int (*set_paniccall) __P((DB *, void (*)(DB_ENV *, int)));
int (*set_priority) __P((DB *, DB_CACHE_PRIORITY));
int (*set_q_extentsize) __P((DB *, u_int32_t));
int (*set_re_delim) __P((DB *, int));
int (*set_re_len) __P((DB *, u_int32_t));
int (*set_re_pad) __P((DB *, int));
int (*set_re_source) __P((DB *, const char *));
int (*stat) __P((DB *, DB_TXN *, void *, u_int32_t));
int (*stat_print) __P((DB *, u_int32_t));
int (*sync) __P((DB *, u_int32_t));
int (*truncate) __P((DB *, DB_TXN *, u_int32_t *, u_int32_t));
int (*upgrade) __P((DB *, const char *, u_int32_t));
int (*verify)
__P((DB *, const char *, const char *, FILE *, u_int32_t));
/* DB PUBLIC HANDLE LIST END */
/* DB PRIVATE HANDLE LIST BEGIN */
int (*dump) __P((DB *, const char *,
int (*)(void *, const void *), void *, int, int));
int (*db_am_remove) __P((DB *, DB_TXN *, const char *, const char *));
int (*db_am_rename) __P((DB *, DB_TXN *,
const char *, const char *, const char *));
/* DB PRIVATE HANDLE LIST END */
/*
* Never called; these are a place to save function pointers
* so that we can undo an associate.
*/
int (*stored_get) __P((DB *, DB_TXN *, DBT *, DBT *, u_int32_t));
int (*stored_close) __P((DB *, u_int32_t));
#define DB_OK_BTREE 0x01
#define DB_OK_HASH 0x02
#define DB_OK_QUEUE 0x04
#define DB_OK_RECNO 0x08
u_int32_t am_ok; /* Legal AM choices. */
/*
* This field really ought to be an AM_FLAG, but we have
* have run out of bits. If/when we decide to split up
* the flags, we can incorporate it.
*/
int preserve_fid; /* Do not free fileid on close. */
#define DB_AM_CHKSUM 0x00000001 /* Checksumming */
#define DB_AM_COMPENSATE 0x00000002 /* Created by compensating txn */
#define DB_AM_CREATED 0x00000004 /* Database was created upon open */
#define DB_AM_CREATED_MSTR 0x00000008 /* Encompassing file was created */
#define DB_AM_DBM_ERROR 0x00000010 /* Error in DBM/NDBM database */
#define DB_AM_DELIMITER 0x00000020 /* Variable length delimiter set */
#define DB_AM_DISCARD 0x00000040 /* Discard any cached pages */
#define DB_AM_DUP 0x00000080 /* DB_DUP */
#define DB_AM_DUPSORT 0x00000100 /* DB_DUPSORT */
#define DB_AM_ENCRYPT 0x00000200 /* Encryption */
#define DB_AM_FIXEDLEN 0x00000400 /* Fixed-length records */
#define DB_AM_INMEM 0x00000800 /* In-memory; no sync on close */
#define DB_AM_INORDER 0x00001000 /* DB_INORDER */
#define DB_AM_IN_RENAME 0x00002000 /* File is being renamed */
#define DB_AM_NOT_DURABLE 0x00004000 /* Do not log changes */
#define DB_AM_OPEN_CALLED 0x00008000 /* DB->open called */
#define DB_AM_PAD 0x00010000 /* Fixed-length record pad */
#define DB_AM_PGDEF 0x00020000 /* Page size was defaulted */
#define DB_AM_RDONLY 0x00040000 /* Database is readonly */
#define DB_AM_READ_UNCOMMITTED 0x00080000 /* Support degree 1 isolation */
#define DB_AM_RECNUM 0x00100000 /* DB_RECNUM */
#define DB_AM_RECOVER 0x00200000 /* DB opened by recovery routine */
#define DB_AM_RENUMBER 0x00400000 /* DB_RENUMBER */
#define DB_AM_REVSPLITOFF 0x00800000 /* DB_REVSPLITOFF */
#define DB_AM_SECONDARY 0x01000000 /* Database is a secondary index */
#define DB_AM_SNAPSHOT 0x02000000 /* DB_SNAPSHOT */
#define DB_AM_SUBDB 0x04000000 /* Subdatabases supported */
#define DB_AM_SWAP 0x08000000 /* Pages need to be byte-swapped */
#define DB_AM_TXN 0x10000000 /* Opened in a transaction */
#define DB_AM_VERIFYING 0x20000000 /* DB handle is in the verifier */
u_int32_t orig_flags; /* Flags at open, for refresh */
u_int32_t flags;
};
/*
* Macros for bulk get. These are only intended for the C API.
* For C++, use DbMultiple*Iterator.
*/
#define DB_MULTIPLE_INIT(pointer, dbt) \
(pointer = (u_int8_t *)(dbt)->data + \
(dbt)->ulen - sizeof(u_int32_t))
#define DB_MULTIPLE_NEXT(pointer, dbt, retdata, retdlen) \
do { \
if (*((u_int32_t *)(pointer)) == (u_int32_t)-1) { \
retdata = NULL; \
pointer = NULL; \
break; \
} \
retdata = (u_int8_t *) \
(dbt)->data + *(u_int32_t *)(pointer); \
(pointer) = (u_int32_t *)(pointer) - 1; \
retdlen = *(u_int32_t *)(pointer); \
(pointer) = (u_int32_t *)(pointer) - 1; \
if (retdlen == 0 && \
retdata == (u_int8_t *)(dbt)->data) \
retdata = NULL; \
} while (0)
#define DB_MULTIPLE_KEY_NEXT(pointer, dbt, retkey, retklen, retdata, retdlen) \
do { \
if (*((u_int32_t *)(pointer)) == (u_int32_t)-1) { \
retdata = NULL; \
retkey = NULL; \
pointer = NULL; \
break; \
} \
retkey = (u_int8_t *) \
(dbt)->data + *(u_int32_t *)(pointer); \
(pointer) = (u_int32_t *)(pointer) - 1; \
retklen = *(u_int32_t *)(pointer); \
(pointer) = (u_int32_t *)(pointer) - 1; \
retdata = (u_int8_t *) \
(dbt)->data + *(u_int32_t *)(pointer); \
(pointer) = (u_int32_t *)(pointer) - 1; \
retdlen = *(u_int32_t *)(pointer); \
(pointer) = (u_int32_t *)(pointer) - 1; \
} while (0)
#define DB_MULTIPLE_RECNO_NEXT(pointer, dbt, recno, retdata, retdlen) \
do { \
if (*((u_int32_t *)(pointer)) == (u_int32_t)0) { \
recno = 0; \
retdata = NULL; \
pointer = NULL; \
break; \
} \
recno = *(u_int32_t *)(pointer); \
(pointer) = (u_int32_t *)(pointer) - 1; \
retdata = (u_int8_t *) \
(dbt)->data + *(u_int32_t *)(pointer); \
(pointer) = (u_int32_t *)(pointer) - 1; \
retdlen = *(u_int32_t *)(pointer); \
(pointer) = (u_int32_t *)(pointer) - 1; \
} while (0)
/*******************************************************
* Access method cursors.
*******************************************************/
struct __dbc {
DB *dbp; /* Related DB access method. */
DB_TXN *txn; /* Associated transaction. */
DB_CACHE_PRIORITY priority; /* Priority in cache. */
/*
* Active/free cursor queues.
*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_ENTRY(__dbc) links;
*/
struct {
DBC *tqe_next;
DBC **tqe_prev;
} links;
/*
* The DBT *'s below are used by the cursor routines to return
* data to the user when DBT flags indicate that DB should manage
* the returned memory. They point at a DBT containing the buffer
* and length that will be used, and "belonging" to the handle that
* should "own" this memory. This may be a "my_*" field of this
* cursor--the default--or it may be the corresponding field of
* another cursor, a DB handle, a join cursor, etc. In general, it
* will be whatever handle the user originally used for the current
* DB interface call.
*/
DBT *rskey; /* Returned secondary key. */
DBT *rkey; /* Returned [primary] key. */
DBT *rdata; /* Returned data. */
DBT my_rskey; /* Space for returned secondary key. */
DBT my_rkey; /* Space for returned [primary] key. */
DBT my_rdata; /* Space for returned data. */
void *lref; /* Reference to default locker. */
DB_LOCKER *locker; /* Locker for this operation. */
DBT lock_dbt; /* DBT referencing lock. */
DB_LOCK_ILOCK lock; /* Object to be locked. */
DB_LOCK mylock; /* CDB lock held on this cursor. */
u_int cl_id; /* Remote client id. */
DBTYPE dbtype; /* Cursor type. */
DBC_INTERNAL *internal; /* Access method private. */
/* DBC PUBLIC HANDLE LIST BEGIN */
int (*close) __P((DBC *));
int (*count) __P((DBC *, db_recno_t *, u_int32_t));
int (*del) __P((DBC *, u_int32_t));
int (*dup) __P((DBC *, DBC **, u_int32_t));
int (*get) __P((DBC *, DBT *, DBT *, u_int32_t));
int (*get_priority) __P((DBC *, DB_CACHE_PRIORITY *));
int (*pget) __P((DBC *, DBT *, DBT *, DBT *, u_int32_t));
int (*put) __P((DBC *, DBT *, DBT *, u_int32_t));
int (*set_priority) __P((DBC *, DB_CACHE_PRIORITY));
/* DBC PUBLIC HANDLE LIST END */
/* The following are the method names deprecated in the 4.6 release. */
int (*c_close) __P((DBC *));
int (*c_count) __P((DBC *, db_recno_t *, u_int32_t));
int (*c_del) __P((DBC *, u_int32_t));
int (*c_dup) __P((DBC *, DBC **, u_int32_t));
int (*c_get) __P((DBC *, DBT *, DBT *, u_int32_t));
int (*c_pget) __P((DBC *, DBT *, DBT *, DBT *, u_int32_t));
int (*c_put) __P((DBC *, DBT *, DBT *, u_int32_t));
/* DBC PRIVATE HANDLE LIST BEGIN */
int (*am_bulk) __P((DBC *, DBT *, u_int32_t));
int (*am_close) __P((DBC *, db_pgno_t, int *));
int (*am_del) __P((DBC *));
int (*am_destroy) __P((DBC *));
int (*am_get) __P((DBC *, DBT *, DBT *, u_int32_t, db_pgno_t *));
int (*am_put) __P((DBC *, DBT *, DBT *, u_int32_t, db_pgno_t *));
int (*am_writelock) __P((DBC *));
/* DBC PRIVATE HANDLE LIST END */
/*
* DBC_DONTLOCK and DBC_RECOVER are used during recovery and transaction
* abort. If a transaction is being aborted or recovered then DBC_RECOVER
* will be set and locking and logging will be disabled on this cursor. If
* we are performing a compensating transaction (e.g. free page processing)
* then DB_DONTLOCK will be set to inhibit locking, but logging will still
* be required. DB_DONTLOCK is also used if the whole database is locked.
*/
#define DBC_ACTIVE 0x0001 /* Cursor in use. */
#define DBC_DONTLOCK 0x0002 /* Don't lock on this cursor. */
#define DBC_MULTIPLE 0x0004 /* Return Multiple data. */
#define DBC_MULTIPLE_KEY 0x0008 /* Return Multiple keys and data. */
#define DBC_OPD 0x0010 /* Cursor references off-page dups. */
#define DBC_OWN_LID 0x0020 /* Free lock id on destroy. */
#define DBC_READ_COMMITTED 0x0040 /* Cursor has degree 2 isolation. */
#define DBC_READ_UNCOMMITTED 0x0080 /* Cursor has degree 1 isolation. */
#define DBC_RECOVER 0x0100 /* Recovery cursor; don't log/lock. */
#define DBC_RMW 0x0200 /* Acquire write flag in read op. */
#define DBC_TRANSIENT 0x0400 /* Cursor is transient. */
#define DBC_WRITECURSOR 0x0800 /* Cursor may be used to write (CDB). */
#define DBC_WRITER 0x1000 /* Cursor immediately writing (CDB). */
u_int32_t flags;
};
/* Key range statistics structure */
struct __key_range {
double less;
double equal;
double greater;
};
/* Btree/Recno statistics structure. */
struct __db_bt_stat {
u_int32_t bt_magic; /* Magic number. */
u_int32_t bt_version; /* Version number. */
u_int32_t bt_metaflags; /* Metadata flags. */
u_int32_t bt_nkeys; /* Number of unique keys. */
u_int32_t bt_ndata; /* Number of data items. */
u_int32_t bt_pagecnt; /* Page count. */
u_int32_t bt_pagesize; /* Page size. */
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_levels; /* Tree levels. */
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_empty_pg; /* Empty 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. */
};
struct __db_compact {
/* Input Parameters. */
u_int32_t compact_fillpercent; /* Desired fillfactor: 1-100 */
db_timeout_t compact_timeout; /* Lock timeout. */
u_int32_t compact_pages; /* Max pages to process. */
/* Output Stats. */
u_int32_t compact_pages_free; /* Number of pages freed. */
u_int32_t compact_pages_examine; /* Number of pages examine. */
u_int32_t compact_levels; /* Number of levels removed. */
u_int32_t compact_deadlock; /* Number of deadlocks. */
db_pgno_t compact_pages_truncated; /* Pages truncated to OS. */
/* Internal. */
db_pgno_t compact_truncate; /* Page number for truncation */
};
/* Hash statistics structure. */
struct __db_h_stat {
u_int32_t hash_magic; /* Magic number. */
u_int32_t hash_version; /* Version number. */
u_int32_t hash_metaflags; /* Metadata flags. */
u_int32_t hash_nkeys; /* Number of unique keys. */
u_int32_t hash_ndata; /* Number of data items. */
u_int32_t hash_pagecnt; /* Page count. */
u_int32_t hash_pagesize; /* Page size. */
u_int32_t hash_ffactor; /* Fill factor specified at create. */
u_int32_t hash_buckets; /* Number of hash buckets. */
u_int32_t hash_free; /* Pages on the free list. */
u_int32_t hash_bfree; /* Bytes free on bucket pages. */
u_int32_t hash_bigpages; /* Number of big key/data pages. */
u_int32_t hash_big_bfree; /* Bytes free on big item pages. */
u_int32_t hash_overflows; /* Number of overflow pages. */
u_int32_t hash_ovfl_free; /* Bytes free on ovfl pages. */
u_int32_t hash_dup; /* Number of dup pages. */
u_int32_t hash_dup_free; /* Bytes free on duplicate pages. */
};
/* Queue statistics structure. */
struct __db_qam_stat {
u_int32_t qs_magic; /* Magic number. */
u_int32_t qs_version; /* Version number. */
u_int32_t qs_metaflags; /* Metadata flags. */
u_int32_t qs_nkeys; /* Number of unique keys. */
u_int32_t qs_ndata; /* Number of data items. */
u_int32_t qs_pagesize; /* Page size. */
u_int32_t qs_extentsize; /* Pages per extent. */
u_int32_t qs_pages; /* Data pages. */
u_int32_t qs_re_len; /* Fixed-length record length. */
u_int32_t qs_re_pad; /* Fixed-length record pad. */
u_int32_t qs_pgfree; /* Bytes free in data pages. */
u_int32_t qs_first_recno; /* First not deleted record. */
u_int32_t qs_cur_recno; /* Next available record number. */
};
/*******************************************************
* Environment.
*******************************************************/
#define DB_REGION_MAGIC 0x120897 /* Environment magic number. */
/* Database Environment handle. */
struct __db_env {
/*******************************************************
* Public: owned by the application.
*******************************************************/
/* Error message callback. */
void (*db_errcall) __P((const DB_ENV *, const char *, const char *));
FILE *db_errfile; /* Error message file stream. */
const char *db_errpfx; /* Error message prefix. */
FILE *db_msgfile; /* Statistics message file stream. */
/* Statistics message callback. */
void (*db_msgcall) __P((const DB_ENV *, const char *));
/* Other Callbacks. */
void (*db_feedback) __P((DB_ENV *, int, int));
void (*db_paniccall) __P((DB_ENV *, int));
void (*db_event_func) __P((DB_ENV *, u_int32_t, void *));
/* App-specified alloc functions. */
void *(*db_malloc) __P((size_t));
void *(*db_realloc) __P((void *, size_t));
void (*db_free) __P((void *));
/* Application callback to copy data to/from a custom data source. */
#define DB_USERCOPY_GETDATA 0x0001
#define DB_USERCOPY_SETDATA 0x0002
int (*dbt_usercopy)
__P((DBT *, u_int32_t, void *, u_int32_t, u_int32_t));
/*
* Currently, the verbose list is a bit field with room for 32
* entries. There's no reason that it needs to be limited, if
* there are ever more than 32 entries, convert to a bit array.
*/
#define DB_VERB_DEADLOCK 0x0001 /* Deadlock detection information. */
#define DB_VERB_FILEOPS 0x0002 /* Major file operations. */
#define DB_VERB_FILEOPS_ALL 0x0004 /* All file operations. */
#define DB_VERB_RECOVERY 0x0008 /* Recovery information. */
#define DB_VERB_REGISTER 0x0010 /* Dump waits-for table. */
#define DB_VERB_REPLICATION 0x0020 /* Replication information. */
#define DB_VERB_WAITSFOR 0x0040 /* Dump waits-for table. */
u_int32_t verbose; /* Verbose output. */
void *app_private; /* Application-private handle. */
int (*app_dispatch) /* User-specified recovery dispatch. */
__P((DB_ENV *, DBT *, DB_LSN *, db_recops));
/* Mutexes. */
u_int32_t mutex_align; /* Mutex alignment */
u_int32_t mutex_cnt; /* Number of mutexes to configure */
u_int32_t mutex_inc; /* Number of mutexes to add */
u_int32_t mutex_tas_spins;/* Test-and-set spin count */
struct {
int alloc_id; /* Allocation ID argument */
u_int32_t flags; /* Flags argument */
} *mutex_iq; /* Initial mutexes queue */
u_int mutex_iq_next; /* Count of initial mutexes */
u_int mutex_iq_max; /* Maximum initial mutexes */
/* Locking. */
u_int8_t *lk_conflicts; /* Two dimensional conflict matrix. */
int lk_modes; /* Number of lock modes in table. */
u_int32_t lk_max; /* Maximum number of locks. */
u_int32_t lk_max_lockers;/* Maximum number of lockers. */
u_int32_t lk_max_objects;/* Maximum number of locked objects. */
u_int32_t lk_detect; /* Deadlock detect on all conflicts. */
db_timeout_t lk_timeout; /* Lock timeout period. */
/* Logging. */
u_int32_t lg_bsize; /* Buffer size. */
u_int32_t lg_size; /* Log file size. */
u_int32_t lg_regionmax; /* Region size. */
int lg_filemode; /* Log file permission mode. */
/* Memory pool. */
u_int mp_ncache; /* Initial number of cache regions. */
u_int32_t mp_gbytes; /* Cache size: GB. */
u_int32_t mp_bytes; /* Cache size: bytes. */
u_int32_t mp_max_gbytes; /* Maximum cache size: GB. */
u_int32_t mp_max_bytes; /* Maximum cache size: bytes. */
size_t mp_mmapsize; /* Maximum file size for mmap. */
int mp_maxopenfd; /* Maximum open file descriptors. */
int mp_maxwrite; /* Maximum buffers to write. */
db_timeout_t mp_maxwrite_sleep; /* Sleep after writing max buffers. */
/* Transactions. */
u_int32_t tx_max; /* Maximum number of transactions. */
time_t tx_timestamp; /* Recover to specific timestamp. */
db_timeout_t tx_timeout; /* Timeout for transactions. */
/* Thread tracking. */
u_int32_t thr_nbucket; /* Number of hash buckets. */
u_int32_t thr_max; /* Max before garbage collection. */
void *thr_hashtab; /* Hash table of DB_THREAD_INFO. */
/*******************************************************
* Private: owned by DB.
*******************************************************/
db_mutex_t mtx_env; /* General DbEnv structure mutex. */
pid_t pid_cache; /* Cached process ID. */
/* User files, 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. */
int db_mode; /* Default open permissions. */
int dir_mode; /* Intermediate directory perms. */
void *env_lref; /* Locker in non-threaded handles. */
u_int32_t open_flags; /* Flags passed to DB_ENV->open. */
void *reginfo; /* REGINFO structure reference. */
DB_FH *lockfhp; /* fcntl(2) locking file handle. */
DB_FH *registry; /* DB_REGISTER file handle. */
u_int32_t registry_off; /*
* Offset of our slot. We can't use
* off_t because its size depends on
* build settings.
*/
/* Return IDs. */
void (*thread_id) __P((DB_ENV *, pid_t *, db_threadid_t *));
/* Return if IDs alive. */
int (*is_alive)
__P((DB_ENV *, pid_t, db_threadid_t, u_int32_t));
/* Format IDs into a string. */
char *(*thread_id_string)
__P((DB_ENV *, pid_t, db_threadid_t, char *));
int (**recover_dtab) /* Dispatch table for recover funcs. */
__P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
size_t recover_dtab_size;
/* Slots in the dispatch table. */
void *cl_handle; /* RPC: remote client handle. */
u_int cl_id; /* RPC: remote client env id. */
int db_ref; /* DB reference count. */
long shm_key; /* shmget(2) key. */
/*
* List of open file handles for this DB_ENV. Must be protected
* for multi-threaded support.
*
* !!!
* Explicit representation of structure in queue.h.
* TAILQ_HEAD(__fdlist, __fh_t);
*/
struct __fdlist {
struct __fh_t *tqh_first;
struct __fh_t **tqh_last;
} fdlist;
/*
* List of open DB handles for this DB_ENV, used for cursor
* adjustment. Must be protected for multi-threaded support.
*
* !!!
* Explicit representation of structure in queue.h.
* TAILQ_HEAD(__dblist, __db);
*/
db_mutex_t mtx_dblist; /* Mutex. */
struct __dblist {
struct __db *tqh_first;
struct __db **tqh_last;
} dblist;
/*
* XA support.
*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_ENTRY(__db_env) links;
* TAILQ_HEAD(xa_txn, __db_txn);
*/
struct {
struct __db_env *tqe_next;
struct __db_env **tqe_prev;
} links;
struct __xa_txn { /* XA Active Transactions. */
struct __db_txn *tqh_first;
struct __db_txn **tqh_last;
} xa_txn;
int xa_rmid; /* XA Resource Manager ID. */
char *passwd; /* Cryptography support. */
size_t passwd_len;
void *crypto_handle; /* Primary handle. */
db_mutex_t mtx_mt; /* Mersenne Twister mutex. */
int mti; /* Mersenne Twister index. */
u_long *mt; /* Mersenne Twister state vector. */
/* API-private structure. */
void *api1_internal; /* C++, Perl API private */
void *api2_internal; /* Java API private */
DB_LOCKTAB *lk_handle; /* Lock handle. */
DB_LOG *lg_handle; /* Log handle. */
DB_MPOOL *mp_handle; /* Mpool handle. */
DB_MUTEXMGR *mutex_handle; /* Mutex handle. */
DB_REP *rep_handle; /* Replication handle. */
DB_TXNMGR *tx_handle; /* Txn handle. */
/* DB_ENV PUBLIC HANDLE LIST BEGIN */
int (*cdsgroup_begin) __P((DB_ENV *, DB_TXN **));
int (*close) __P((DB_ENV *, u_int32_t));
int (*dbremove) __P((DB_ENV *,
DB_TXN *, const char *, const char *, u_int32_t));
int (*dbrename) __P((DB_ENV *,
DB_TXN *, const char *, const char *, const char *, u_int32_t));
void (*err) __P((const DB_ENV *, int, const char *, ...));
void (*errx) __P((const DB_ENV *, const char *, ...));
int (*failchk) __P((DB_ENV *, u_int32_t));
int (*fileid_reset) __P((DB_ENV *, const char *, u_int32_t));
int (*get_cachesize) __P((DB_ENV *, u_int32_t *, u_int32_t *, int *));
int (*get_cache_max) __P((DB_ENV *, u_int32_t *, u_int32_t *));
int (*get_data_dirs) __P((DB_ENV *, const char ***));
int (*get_encrypt_flags) __P((DB_ENV *, u_int32_t *));
void (*get_errfile) __P((DB_ENV *, FILE **));
void (*get_errpfx) __P((DB_ENV *, const char **));
int (*get_flags) __P((DB_ENV *, u_int32_t *));
int (*get_home) __P((DB_ENV *, const char **));
int (*get_lg_bsize) __P((DB_ENV *, u_int32_t *));
int (*get_lg_dir) __P((DB_ENV *, const char **));
int (*get_lg_filemode) __P((DB_ENV *, int *));
int (*get_lg_max) __P((DB_ENV *, u_int32_t *));
int (*get_lg_regionmax) __P((DB_ENV *, u_int32_t *));
int (*get_lk_conflicts) __P((DB_ENV *, const u_int8_t **, int *));
int (*get_lk_detect) __P((DB_ENV *, u_int32_t *));
int (*get_lk_max_lockers) __P((DB_ENV *, u_int32_t *));
int (*get_lk_max_locks) __P((DB_ENV *, u_int32_t *));
int (*get_lk_max_objects) __P((DB_ENV *, u_int32_t *));
int (*get_mp_max_openfd) __P((DB_ENV *, int *));
int (*get_mp_max_write) __P((DB_ENV *, int *, db_timeout_t *));
int (*get_mp_mmapsize) __P((DB_ENV *, size_t *));
void (*get_msgfile) __P((DB_ENV *, FILE **));
int (*get_open_flags) __P((DB_ENV *, u_int32_t *));
int (*get_shm_key) __P((DB_ENV *, long *));
int (*get_thread_count) __P((DB_ENV *, u_int32_t *));
int (*get_timeout) __P((DB_ENV *, db_timeout_t *, u_int32_t));
int (*get_tmp_dir) __P((DB_ENV *, const char **));
int (*get_tx_max) __P((DB_ENV *, u_int32_t *));
int (*get_tx_timestamp) __P((DB_ENV *, time_t *));
int (*get_verbose) __P((DB_ENV *, u_int32_t, int *));
int (*is_bigendian) __P((void));
int (*lock_detect) __P((DB_ENV *, u_int32_t, u_int32_t, int *));
int (*lock_get) __P((DB_ENV *,
u_int32_t, u_int32_t, const DBT *, db_lockmode_t, DB_LOCK *));
int (*lock_id) __P((DB_ENV *, u_int32_t *));
int (*lock_id_free) __P((DB_ENV *, u_int32_t));
int (*lock_put) __P((DB_ENV *, DB_LOCK *));
int (*lock_stat) __P((DB_ENV *, DB_LOCK_STAT **, u_int32_t));
int (*lock_stat_print) __P((DB_ENV *, u_int32_t));
int (*lock_vec) __P((DB_ENV *,
u_int32_t, u_int32_t, DB_LOCKREQ *, int, DB_LOCKREQ **));
int (*log_archive) __P((DB_ENV *, char **[], u_int32_t));
int (*log_cursor) __P((DB_ENV *, DB_LOGC **, u_int32_t));
int (*log_file) __P((DB_ENV *, const DB_LSN *, char *, size_t));
int (*log_flush) __P((DB_ENV *, const DB_LSN *));
int (*log_printf) __P((DB_ENV *, DB_TXN *, const char *, ...));
int (*log_put) __P((DB_ENV *, DB_LSN *, const DBT *, u_int32_t));
int (*log_stat) __P((DB_ENV *, DB_LOG_STAT **, u_int32_t));
int (*log_stat_print) __P((DB_ENV *, u_int32_t));
int (*lsn_reset) __P((DB_ENV *, const char *, u_int32_t));
int (*memp_fcreate) __P((DB_ENV *, DB_MPOOLFILE **, u_int32_t));
int (*memp_register) __P((DB_ENV *, int, int (*)(DB_ENV *,
db_pgno_t, void *, DBT *), int (*)(DB_ENV *,
db_pgno_t, void *, DBT *)));
int (*memp_stat) __P((DB_ENV *,
DB_MPOOL_STAT **, DB_MPOOL_FSTAT ***, u_int32_t));
int (*memp_stat_print) __P((DB_ENV *, u_int32_t));
int (*memp_sync) __P((DB_ENV *, DB_LSN *));
int (*memp_trickle) __P((DB_ENV *, int, int *));
int (*mutex_alloc) __P((DB_ENV *, u_int32_t, db_mutex_t *));
int (*mutex_free) __P((DB_ENV *, db_mutex_t));
int (*mutex_get_align) __P((DB_ENV *, u_int32_t *));
int (*mutex_get_increment) __P((DB_ENV *, u_int32_t *));
int (*mutex_get_max) __P((DB_ENV *, u_int32_t *));
int (*mutex_get_tas_spins) __P((DB_ENV *, u_int32_t *));
int (*mutex_lock) __P((DB_ENV *, db_mutex_t));
int (*mutex_set_align) __P((DB_ENV *, u_int32_t));
int (*mutex_set_increment) __P((DB_ENV *, u_int32_t));
int (*mutex_set_max) __P((DB_ENV *, u_int32_t));
int (*mutex_set_tas_spins) __P((DB_ENV *, u_int32_t));
int (*mutex_stat) __P((DB_ENV *, DB_MUTEX_STAT **, u_int32_t));
int (*mutex_stat_print) __P((DB_ENV *, u_int32_t));
int (*mutex_unlock) __P((DB_ENV *, db_mutex_t));
int (*open) __P((DB_ENV *, const char *, u_int32_t, int));
int (*remove) __P((DB_ENV *, const char *, u_int32_t));
int (*rep_elect) __P((DB_ENV *, int, int, u_int32_t));
int (*rep_flush) __P((DB_ENV *));
int (*rep_get_config) __P((DB_ENV *, u_int32_t, int *));
int (*rep_get_limit) __P((DB_ENV *, u_int32_t *, u_int32_t *));
int (*rep_get_nsites) __P((DB_ENV *, int *));
int (*rep_get_priority) __P((DB_ENV *, int *));
int (*rep_get_timeout) __P((DB_ENV *, int, u_int32_t *));
int (*rep_process_message)
__P((DB_ENV *, DBT *, DBT *, int, DB_LSN *));
int (*rep_set_config) __P((DB_ENV *, u_int32_t, int));
int (*rep_set_lease) __P((DB_ENV *, u_int32_t, u_int32_t));
int (*rep_set_limit) __P((DB_ENV *, u_int32_t, u_int32_t));
int (*rep_set_nsites) __P((DB_ENV *, int));
int (*rep_set_priority) __P((DB_ENV *, int));
int (*rep_set_timeout) __P((DB_ENV *, int, db_timeout_t));
int (*rep_set_transport) __P((DB_ENV *, int, int (*)(DB_ENV *,
const DBT *, const DBT *, const DB_LSN *, int, u_int32_t)));
int (*rep_start) __P((DB_ENV *, DBT *, u_int32_t));
int (*rep_stat) __P((DB_ENV *, DB_REP_STAT **, u_int32_t));
int (*rep_stat_print) __P((DB_ENV *, u_int32_t));
int (*rep_sync) __P((DB_ENV *, u_int32_t));
int (*repmgr_add_remote_site) __P((DB_ENV *, const char *, u_int,
int *, u_int32_t));
int (*repmgr_get_ack_policy) __P((DB_ENV *, int *));
int (*repmgr_set_ack_policy) __P((DB_ENV *, int));
int (*repmgr_set_local_site) __P((DB_ENV *, const char *, u_int,
u_int32_t));
int (*repmgr_site_list) __P((DB_ENV *, u_int *,
DB_REPMGR_SITE **));
int (*repmgr_start) __P((DB_ENV *, int, u_int32_t));
int (*repmgr_stat) __P((DB_ENV *, DB_REPMGR_STAT **, u_int32_t));
int (*repmgr_stat_print) __P((DB_ENV *, u_int32_t));
int (*set_alloc) __P((DB_ENV *, void *(*)(size_t),
void *(*)(void *, size_t), void (*)(void *)));
int (*set_app_dispatch)
__P((DB_ENV *, int (*)(DB_ENV *, DBT *, DB_LSN *, db_recops)));
int (*set_cachesize) __P((DB_ENV *, u_int32_t, u_int32_t, int));
int (*set_cache_max) __P((DB_ENV *, u_int32_t, u_int32_t));
int (*set_data_dir) __P((DB_ENV *, const char *));
int (*set_encrypt) __P((DB_ENV *, const char *, u_int32_t));
void (*set_errcall) __P((DB_ENV *,
void (*)(const DB_ENV *, const char *, const char *)));
void (*set_errfile) __P((DB_ENV *, FILE *));
void (*set_errpfx) __P((DB_ENV *, const char *));
int (*set_event_notify)
__P((DB_ENV *, void (*)(DB_ENV *, u_int32_t, void *)));
int (*set_feedback) __P((DB_ENV *, void (*)(DB_ENV *, int, int)));
int (*set_flags) __P((DB_ENV *, u_int32_t, int));
int (*set_intermediate_dir) __P((DB_ENV *, int, u_int32_t));
int (*set_isalive) __P((DB_ENV *,
int (*)(DB_ENV *, pid_t, db_threadid_t, u_int32_t)));
int (*set_lg_bsize) __P((DB_ENV *, u_int32_t));
int (*set_lg_dir) __P((DB_ENV *, const char *));
int (*set_lg_filemode) __P((DB_ENV *, int));
int (*set_lg_max) __P((DB_ENV *, u_int32_t));
int (*set_lg_regionmax) __P((DB_ENV *, u_int32_t));
int (*set_lk_conflicts) __P((DB_ENV *, u_int8_t *, int));
int (*set_lk_detect) __P((DB_ENV *, u_int32_t));
int (*set_lk_max_lockers) __P((DB_ENV *, u_int32_t));
int (*set_lk_max_locks) __P((DB_ENV *, u_int32_t));
int (*set_lk_max_objects) __P((DB_ENV *, u_int32_t));
int (*set_mp_max_openfd) __P((DB_ENV *, int));
int (*set_mp_max_write) __P((DB_ENV *, int, db_timeout_t));
int (*set_mp_mmapsize) __P((DB_ENV *, size_t));
void (*set_msgcall)
__P((DB_ENV *, void (*)(const DB_ENV *, const char *)));
void (*set_msgfile) __P((DB_ENV *, FILE *));
int (*set_paniccall) __P((DB_ENV *, void (*)(DB_ENV *, int)));
int (*set_rep_request) __P((DB_ENV *, u_int32_t, u_int32_t));
int (*set_rpc_server)
__P((DB_ENV *, void *, const char *, long, long, u_int32_t));
int (*set_shm_key) __P((DB_ENV *, long));
int (*set_thread_count) __P((DB_ENV *, u_int32_t));
int (*set_thread_id) __P((DB_ENV *,
void (*)(DB_ENV *, pid_t *, db_threadid_t *)));
int (*set_thread_id_string) __P((DB_ENV *,
char *(*)(DB_ENV *, pid_t, db_threadid_t, char *)));
int (*set_timeout) __P((DB_ENV *, db_timeout_t, u_int32_t));
int (*set_tmp_dir) __P((DB_ENV *, const char *));
int (*set_tx_max) __P((DB_ENV *, u_int32_t));
int (*set_tx_timestamp) __P((DB_ENV *, time_t *));
int (*set_verbose) __P((DB_ENV *, u_int32_t, int));
int (*stat_print) __P((DB_ENV *, u_int32_t));
int (*txn_begin) __P((DB_ENV *, DB_TXN *, DB_TXN **, u_int32_t));
int (*txn_checkpoint) __P((DB_ENV *, u_int32_t, u_int32_t, u_int32_t));
int (*txn_recover)
__P((DB_ENV *, DB_PREPLIST *, long, long *, u_int32_t));
int (*txn_stat) __P((DB_ENV *, DB_TXN_STAT **, u_int32_t));
int (*txn_stat_print) __P((DB_ENV *, u_int32_t));
/* DB_ENV PUBLIC HANDLE LIST END */
/* DB_ENV PRIVATE HANDLE LIST BEGIN */
int (*prdbt) __P((DBT *,
int, const char *, void *, int (*)(void *, const void *), int));
/* DB_ENV PRIVATE HANDLE LIST END */
#define DB_TEST_ELECTINIT 1 /* after __rep_elect_init */
#define DB_TEST_ELECTVOTE1 2 /* after sending VOTE1 */
#define DB_TEST_POSTDESTROY 3 /* after destroy op */
#define DB_TEST_POSTLOG 4 /* after logging all pages */
#define DB_TEST_POSTLOGMETA 5 /* after logging meta in btree */
#define DB_TEST_POSTOPEN 6 /* after __os_open */
#define DB_TEST_POSTSYNC 7 /* after syncing the log */
#define DB_TEST_PREDESTROY 8 /* before destroy op */
#define DB_TEST_PREOPEN 9 /* before __os_open */
#define DB_TEST_RECYCLE 10 /* test rep and txn_recycle */
#define DB_TEST_SUBDB_LOCKS 11 /* subdb locking tests */
int test_abort; /* Abort value for testing. */
int test_check; /* Checkpoint value for testing. */
int test_copy; /* Copy value for testing. */
#define DB_ENV_AUTO_COMMIT 0x00000001 /* DB_AUTO_COMMIT. */
#define DB_ENV_CDB 0x00000002 /* DB_INIT_CDB. */
#define DB_ENV_CDB_ALLDB 0x00000004 /* CDB environment wide locking. */
#define DB_ENV_DBLOCAL 0x00000008 /* Environment for a private DB. */
#define DB_ENV_DIRECT_DB 0x00000010 /* DB_DIRECT_DB set. */
#define DB_ENV_DIRECT_LOG 0x00000020 /* DB_DIRECT_LOG set. */
#define DB_ENV_DSYNC_DB 0x00000040 /* DB_DSYNC_DB set. */
#define DB_ENV_DSYNC_LOG 0x00000080 /* DB_DSYNC_LOG set. */
#define DB_ENV_LOCKDOWN 0x00000100 /* DB_LOCKDOWN set. */
#define DB_ENV_LOG_AUTOREMOVE 0x00000200 /* DB_LOG_AUTOREMOVE set. */
#define DB_ENV_LOG_INMEMORY 0x00000400 /* DB_LOG_INMEMORY set. */
#define DB_ENV_MULTIVERSION 0x00000800 /* DB_MULTIVERSION set. */
#define DB_ENV_NOLOCKING 0x00001000 /* DB_NOLOCKING set. */
#define DB_ENV_NOMMAP 0x00002000 /* DB_NOMMAP set. */
#define DB_ENV_NOPANIC 0x00004000 /* Okay if panic set. */
#define DB_ENV_NO_OUTPUT_SET 0x00008000 /* No output channel set. */
#define DB_ENV_OPEN_CALLED 0x00010000 /* DB_ENV->open called. */
#define DB_ENV_OVERWRITE 0x00020000 /* DB_OVERWRITE set. */
#define DB_ENV_PRIVATE 0x00040000 /* DB_PRIVATE set. */
#define DB_ENV_RECOVER_FATAL 0x00080000 /* Doing fatal recovery in env. */
#define DB_ENV_REF_COUNTED 0x00100000 /* Region references this handle. */
#define DB_ENV_REGION_INIT 0x00200000 /* DB_REGION_INIT set. */
#define DB_ENV_RPCCLIENT 0x00400000 /* DB_RPCCLIENT set. */
#define DB_ENV_RPCCLIENT_GIVEN 0x00800000 /* User-supplied RPC client struct */
#define DB_ENV_SYSTEM_MEM 0x01000000 /* DB_SYSTEM_MEM set. */
#define DB_ENV_THREAD 0x02000000 /* DB_THREAD set. */
#define DB_ENV_TIME_NOTGRANTED 0x04000000 /* DB_TIME_NOTGRANTED set. */
#define DB_ENV_TXN_NOSYNC 0x08000000 /* DB_TXN_NOSYNC set. */
#define DB_ENV_TXN_NOWAIT 0x10000000 /* DB_TXN_NOWAIT set. */
#define DB_ENV_TXN_SNAPSHOT 0x20000000 /* DB_TXN_SNAPSHOT set. */
#define DB_ENV_TXN_WRITE_NOSYNC 0x40000000 /* DB_TXN_WRITE_NOSYNC set. */
#define DB_ENV_YIELDCPU 0x80000000 /* DB_YIELDCPU set. */
u_int32_t flags;
};
#ifndef DB_DBM_HSEARCH
#define DB_DBM_HSEARCH 0 /* No historic interfaces by default. */
#endif
#if DB_DBM_HSEARCH != 0
/*******************************************************
* Dbm/Ndbm historic interfaces.
*******************************************************/
typedef struct __db DBM;
#define DBM_INSERT 0 /* Flags to dbm_store(). */
#define DBM_REPLACE 1
/*
* The DB support for ndbm(3) always appends this suffix to the
* file name to avoid overwriting the user's original database.
*/
#define DBM_SUFFIX ".db"
#if defined(_XPG4_2)
typedef struct {
char *dptr;
size_t dsize;
} datum;
#else
typedef struct {
char *dptr;
int dsize;
} datum;
#endif
/*
* Translate NDBM calls into DB calls so that DB doesn't step on the
* application's name space.
*/
#define dbm_clearerr(a) __db_ndbm_clearerr@DB_VERSION_UNIQUE_NAME@(a)
#define dbm_close(a) __db_ndbm_close@DB_VERSION_UNIQUE_NAME@(a)
#define dbm_delete(a, b) __db_ndbm_delete@DB_VERSION_UNIQUE_NAME@(a, b)
#define dbm_dirfno(a) __db_ndbm_dirfno@DB_VERSION_UNIQUE_NAME@(a)
#define dbm_error(a) __db_ndbm_error@DB_VERSION_UNIQUE_NAME@(a)
#define dbm_fetch(a, b) __db_ndbm_fetch@DB_VERSION_UNIQUE_NAME@(a, b)
#define dbm_firstkey(a) __db_ndbm_firstkey@DB_VERSION_UNIQUE_NAME@(a)
#define dbm_nextkey(a) __db_ndbm_nextkey@DB_VERSION_UNIQUE_NAME@(a)
#define dbm_open(a, b, c) __db_ndbm_open@DB_VERSION_UNIQUE_NAME@(a, b, c)
#define dbm_pagfno(a) __db_ndbm_pagfno@DB_VERSION_UNIQUE_NAME@(a)
#define dbm_rdonly(a) __db_ndbm_rdonly@DB_VERSION_UNIQUE_NAME@(a)
#define dbm_store(a, b, c, d) \
__db_ndbm_store@DB_VERSION_UNIQUE_NAME@(a, b, c, d)
/*
* Translate DBM calls into DB calls so that DB doesn't step on the
* application's name space.
*
* The global variables dbrdonly, dirf and pagf were not retained when 4BSD
* replaced the dbm interface with ndbm, and are not supported here.
*/
#define dbminit(a) __db_dbm_init@DB_VERSION_UNIQUE_NAME@(a)
#define dbmclose __db_dbm_close@DB_VERSION_UNIQUE_NAME@
#if !defined(__cplusplus)
#define delete(a) __db_dbm_delete@DB_VERSION_UNIQUE_NAME@(a)
#endif
#define fetch(a) __db_dbm_fetch@DB_VERSION_UNIQUE_NAME@(a)
#define firstkey __db_dbm_firstkey@DB_VERSION_UNIQUE_NAME@
#define nextkey(a) __db_dbm_nextkey@DB_VERSION_UNIQUE_NAME@(a)
#define store(a, b) __db_dbm_store@DB_VERSION_UNIQUE_NAME@(a, b)
/*******************************************************
* Hsearch historic interface.
*******************************************************/
typedef enum {
FIND, ENTER
} ACTION;
typedef struct entry {
char *key;
char *data;
} ENTRY;
#define hcreate(a) __db_hcreate@DB_VERSION_UNIQUE_NAME@(a)
#define hdestroy __db_hdestroy@DB_VERSION_UNIQUE_NAME@
#define hsearch(a, b) __db_hsearch@DB_VERSION_UNIQUE_NAME@(a, b)
#endif /* DB_DBM_HSEARCH */
#if defined(__cplusplus)
}
#endif
@platform_footer@
#endif /* !_DB_H_ */