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Your IP : 3.147.82.22
/*
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996, 2013 Oracle and/or its affiliates. All rights reserved.
*
* $Id$
*
* 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>
#include <inttypes.h>
#include <stdint.h>
#include <stddef.h>
#include <stdio.h>
#include <unistd.h>
#include <pthread.h>
#endif
#if defined(__cplusplus)
extern "C" {
#endif
#undef __P
#define __P(protos) protos
/*
* Berkeley DB version information.
*/
#define DB_VERSION_FAMILY 11
#define DB_VERSION_RELEASE 2
#define DB_VERSION_MAJOR 5
#define DB_VERSION_MINOR 3
#define DB_VERSION_PATCH 28
#define DB_VERSION_STRING "Berkeley DB 5.3.28: (September 9, 2013)"
#define DB_VERSION_FULL_STRING "Berkeley DB 11g Release 2, library version 11.2.5.3.28: (September 9, 2013)"
/*
* !!!
* 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__
#endif
/*
* 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.
*/
#ifdef HAVE_MIXED_SIZE_ADDRESSING
typedef u_int32_t db_size_t;
#else
typedef size_t db_size_t;
#endif
#ifdef HAVE_MIXED_SIZE_ADDRESSING
typedef int32_t db_ssize_t;
#else
typedef ssize_t db_ssize_t;
#endif
/*
* Sequences are only available on machines with 64-bit integral types.
*/
typedef int64_t db_seq_t;
/* Thread and process identification. */
typedef pthread_t db_threadid_t;
/* 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 db_size_t roff_t;
/*
* Forward structure declarations, so we can declare pointers and
* applications can get type checking.
*/
struct __channel; typedef struct __channel CHANNEL;
struct __db; typedef struct __db DB;
struct __db_bt_stat; typedef struct __db_bt_stat DB_BTREE_STAT;
struct __db_channel; typedef struct __db_channel DB_CHANNEL;
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_distab; typedef struct __db_distab DB_DISTAB;
struct __db_env; typedef struct __db_env DB_ENV;
struct __db_h_stat; typedef struct __db_h_stat DB_HASH_STAT;
struct __db_heap_rid; typedef struct __db_heap_rid DB_HEAP_RID;
struct __db_heap_stat; typedef struct __db_heap_stat DB_HEAP_STAT;
struct __db_ilock; typedef struct __db_ilock DB_LOCK_ILOCK;
struct __db_lock_hstat; typedef struct __db_lock_hstat DB_LOCK_HSTAT;
struct __db_lock_pstat; typedef struct __db_lock_pstat DB_LOCK_PSTAT;
struct __db_lock_stat; typedef struct __db_lock_stat DB_LOCK_STAT;
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_conn_err;
typedef struct __db_repmgr_conn_err DB_REPMGR_CONN_ERR;
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_site; typedef struct __db_site DB_SITE;
struct __db_sequence; typedef struct __db_sequence DB_SEQUENCE;
struct __db_thread_info;typedef struct __db_thread_info DB_THREAD_INFO;
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_txn_token; typedef struct __db_txn_token DB_TXN_TOKEN;
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 __env; typedef struct __env ENV;
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;
struct __db_logvrfy_config;
typedef struct __db_logvrfy_config DB_LOG_VERIFY_CONFIG;
/*
* The Berkeley DB API flags are automatically-generated -- the following flag
* names are no longer used, but remain for compatibility reasons.
*/
#define DB_DEGREE_2 DB_READ_COMMITTED
#define DB_DIRTY_READ DB_READ_UNCOMMITTED
#define DB_JOINENV 0x0
/* 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_BULK 0x002 /* Internal: Insert if duplicate. */
#define DB_DBT_DUPOK 0x004 /* Internal: Insert if duplicate. */
#define DB_DBT_ISSET 0x008 /* Lower level calls set value. */
#define DB_DBT_MALLOC 0x010 /* Return in malloc'd memory. */
#define DB_DBT_MULTIPLE 0x020 /* References multiple records. */
#define DB_DBT_PARTIAL 0x040 /* Partial put/get. */
#define DB_DBT_REALLOC 0x080 /* Return in realloc'd memory. */
#define DB_DBT_READONLY 0x100 /* Readonly, don't update. */
#define DB_DBT_STREAMING 0x200 /* Internal: DBT is being streamed. */
#define DB_DBT_USERCOPY 0x400 /* Use the user-supplied callback. */
#define DB_DBT_USERMEM 0x800 /* Return in user's memory. */
u_int32_t flags;
};
/*******************************************************
* Mutexes.
*******************************************************/
/*
* When mixed size addressing is supported mutexes need to be the same size
* independent of the process address size is.
*/
#ifdef HAVE_MIXED_SIZE_ADDRESSING
typedef db_size_t db_mutex_t;
#else
typedef uintptr_t db_mutex_t;
#endif
struct __db_mutex_stat { /* SHARED */
/* 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_init; /* Initial mutex count */
u_int32_t st_mutex_cnt; /* Mutex count */
u_int32_t st_mutex_max; /* Mutex max */
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
uintmax_t st_region_wait; /* Region lock granted after wait. */
uintmax_t st_region_nowait; /* Region lock granted without wait. */
roff_t st_regsize; /* Region size. */
roff_t st_regmax; /* Region max. */
#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. */
/*
* 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 { /* SHARED */
u_int32_t st_id; /* Last allocated locker ID. */
u_int32_t st_cur_maxid; /* Current maximum unused ID. */
u_int32_t st_initlocks; /* Initial number of locks in table. */
u_int32_t st_initlockers; /* Initial num of lockers in table. */
u_int32_t st_initobjects; /* Initial num of objects in table. */
u_int32_t st_locks; /* Current number of locks in table. */
u_int32_t st_lockers; /* Current num of lockers in table. */
u_int32_t st_objects; /* Current num of objects in table. */
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. */
u_int32_t st_partitions; /* number of partitions. */
u_int32_t st_tablesize; /* Size of object hash table. */
int32_t 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_maxhlocks; /* Maximum number of locks in any bucket. */
uintmax_t st_locksteals; /* Number of lock steals so far. */
uintmax_t st_maxlsteals; /* Maximum number steals in any partition. */
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_maxhobjects; /* Maximum number of objectsin any bucket. */
uintmax_t st_objectsteals; /* Number of objects steals so far. */
uintmax_t st_maxosteals; /* Maximum number of steals in any partition. */
uintmax_t st_nrequests; /* Number of lock gets. */
uintmax_t st_nreleases; /* Number of lock puts. */
uintmax_t st_nupgrade; /* Number of lock upgrades. */
uintmax_t st_ndowngrade; /* Number of lock downgrades. */
uintmax_t st_lock_wait; /* Lock conflicts w/ subsequent wait */
uintmax_t st_lock_nowait; /* Lock conflicts w/o subsequent wait */
uintmax_t st_ndeadlocks; /* Number of lock deadlocks. */
db_timeout_t st_locktimeout; /* Lock timeout. */
uintmax_t st_nlocktimeouts; /* Number of lock timeouts. */
db_timeout_t st_txntimeout; /* Transaction timeout. */
uintmax_t st_ntxntimeouts; /* Number of transaction timeouts. */
uintmax_t st_part_wait; /* Partition lock granted after wait. */
uintmax_t st_part_nowait; /* Partition lock granted without wait. */
uintmax_t st_part_max_wait; /* Max partition lock granted after wait. */
uintmax_t st_part_max_nowait; /* Max partition lock granted without wait. */
uintmax_t st_objs_wait; /* Object lock granted after wait. */
uintmax_t st_objs_nowait; /* Object lock granted without wait. */
uintmax_t st_lockers_wait; /* Locker lock granted after wait. */
uintmax_t st_lockers_nowait; /* Locker lock granted without wait. */
uintmax_t st_region_wait; /* Region lock granted after wait. */
uintmax_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 { /* SHARED */
uintmax_t st_nrequests; /* Number of lock gets. */
uintmax_t st_nreleases; /* Number of lock puts. */
uintmax_t st_nupgrade; /* Number of lock upgrades. */
uintmax_t st_ndowngrade; /* Number of lock downgrades. */
u_int32_t st_nlocks; /* Current number of locks. */
u_int32_t st_maxnlocks; /* Maximum number of locks so far. */
u_int32_t st_nobjects; /* Current number of objects. */
u_int32_t st_maxnobjects; /* Maximum number of objects so far. */
uintmax_t st_lock_wait; /* Lock conflicts w/ subsequent wait */
uintmax_t st_lock_nowait; /* Lock conflicts w/o subsequent wait */
uintmax_t st_nlocktimeouts; /* Number of lock timeouts. */
uintmax_t st_ntxntimeouts; /* Number of transaction timeouts. */
u_int32_t st_hash_len; /* Max length of bucket. */
};
struct __db_lock_pstat { /* SHARED */
u_int32_t st_nlocks; /* Current number of locks. */
u_int32_t st_maxnlocks; /* Maximum number of locks so far. */
u_int32_t st_nobjects; /* Current number of objects. */
u_int32_t st_maxnobjects; /* Maximum number of objects so far. */
uintmax_t st_locksteals; /* Number of lock steals so far. */
uintmax_t st_objectsteals; /* Number of objects steals so far. */
};
/*
* DB_LOCK_ILOCK --
* Internal DB access method lock.
*/
struct __db_ilock { /* SHARED */
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
#define DB_DATABASE_LOCK 4
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 { /* SHARED */
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 19 /* Current log version. */
#define DB_LOGVERSION_LATCHING 15 /* Log version using latching: db-4.8 */
#define DB_LOGCHKSUM 12 /* Check sum headers: db-4.5 */
#define DB_LOGOLDVER 8 /* Oldest version supported: db-4.2 */
#define DB_LOGMAGIC 0x040988
/*
* 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 { /* SHARED */
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 {
ENV *env; /* Environment */
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 { /* SHARED */
u_int32_t st_magic; /* Log file magic number. */
u_int32_t st_version; /* Log file version number. */
int32_t 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. */
u_int32_t st_fileid_init; /* Initial allocation for fileids. */
#ifndef __TEST_DB_NO_STATISTICS
u_int32_t st_nfileid; /* Current number of fileids. */
u_int32_t st_maxnfileid; /* Maximum number of fileids used. */
uintmax_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. */
uintmax_t st_wcount; /* Total I/O writes to the log. */
uintmax_t st_wcount_fill; /* Overflow writes to the log. */
uintmax_t st_rcount; /* Total I/O reads from the log. */
uintmax_t st_scount; /* Total syncs to the log. */
uintmax_t st_region_wait; /* Region lock granted after wait. */
uintmax_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))
/*
* Definition of the structure which specifies marshalling of log records.
*/
typedef enum {
LOGREC_Done,
LOGREC_ARG,
LOGREC_HDR,
LOGREC_DATA,
LOGREC_DB,
LOGREC_DBOP,
LOGREC_DBT,
LOGREC_LOCKS,
LOGREC_OP,
LOGREC_PGDBT,
LOGREC_PGDDBT,
LOGREC_PGLIST,
LOGREC_POINTER,
LOGREC_TIME
} log_rec_type_t;
typedef const struct __log_rec_spec {
log_rec_type_t type;
u_int32_t offset;
const char *name;
const char fmt[4];
} DB_LOG_RECSPEC;
/*
* Size of a DBT in a log record.
*/
#define LOG_DBT_SIZE(dbt) \
(sizeof(u_int32_t) + ((dbt) == NULL ? 0 : (dbt)->size))
/*******************************************************
* Shared buffer cache (mpool).
*******************************************************/
/* 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.
*/
ENV *env; /* Environment */
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 used to flush a buffer. */
#define MP_FOR_FLUSH 0x004 /* Was opened to flush a buffer. */
#define MP_MULTIVERSION 0x008 /* Opened for multiversion access. */
#define MP_OPEN_CALLED 0x010 /* File opened. */
#define MP_READONLY 0x020 /* File is readonly. */
#define MP_DUMMY 0x040 /* File is dummy for __memp_fput. */
u_int32_t flags;
};
/* Mpool statistics structure. */
struct __db_mpool_stat { /* SHARED */
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. */
db_size_t st_mmapsize; /* Maximum file size for mmap. */
int32_t st_maxopenfd; /* Maximum number of open fd's. */
int32_t 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. */
uintmax_t st_cache_hit; /* Pages found in the cache. */
uintmax_t st_cache_miss; /* Pages not found in the cache. */
uintmax_t st_page_create; /* Pages created in the cache. */
uintmax_t st_page_in; /* Pages read in. */
uintmax_t st_page_out; /* Pages written out. */
uintmax_t st_ro_evict; /* Clean pages forced from the cache. */
uintmax_t st_rw_evict; /* Dirty pages forced from the cache. */
uintmax_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_mutexes; /* Number of hash bucket mutexes. */
u_int32_t st_pagesize; /* Assumed page size. */
u_int32_t st_hash_searches; /* Total hash chain searches. */
u_int32_t st_hash_longest; /* Longest hash chain searched. */
uintmax_t st_hash_examined; /* Total hash entries searched. */
uintmax_t st_hash_nowait; /* Hash lock granted with nowait. */
uintmax_t st_hash_wait; /* Hash lock granted after wait. */
uintmax_t st_hash_max_nowait; /* Max hash lock granted with nowait. */
uintmax_t st_hash_max_wait; /* Max hash lock granted after wait. */
uintmax_t st_region_nowait; /* Region lock granted with nowait. */
uintmax_t st_region_wait; /* Region lock granted after wait. */
uintmax_t st_mvcc_frozen; /* Buffers frozen. */
uintmax_t st_mvcc_thawed; /* Buffers thawed. */
uintmax_t st_mvcc_freed; /* Frozen buffers freed. */
uintmax_t st_alloc; /* Number of page allocations. */
uintmax_t st_alloc_buckets; /* Buckets checked during allocation. */
uintmax_t st_alloc_max_buckets;/* Max checked during allocation. */
uintmax_t st_alloc_pages; /* Pages checked during allocation. */
uintmax_t st_alloc_max_pages; /* Max checked during allocation. */
uintmax_t st_io_wait; /* Thread waited on buffer I/O. */
uintmax_t st_sync_interrupted; /* Number of times sync interrupted. */
roff_t st_regsize; /* Region size. */
roff_t st_regmax; /* Region max. */
#endif
};
/*
* Mpool file statistics structure.
* The first fields in this structure must mirror the __db_mpool_fstat_int
* structure, since content is mem copied between the two.
*/
struct __db_mpool_fstat {
u_int32_t st_pagesize; /* Page size. */
#ifndef __TEST_DB_NO_STATISTICS
u_int32_t st_map; /* Pages from mapped files. */
uintmax_t st_cache_hit; /* Pages found in the cache. */
uintmax_t st_cache_miss; /* Pages not found in the cache. */
uintmax_t st_page_create; /* Pages created in the cache. */
uintmax_t st_page_in; /* Pages read in. */
uintmax_t st_page_out; /* Pages written out. */
uintmax_t st_backup_spins; /* Number of spins during a copy. */
#endif
char *file_name; /* File name. */
};
/*******************************************************
* Transactions and recovery.
*******************************************************/
#define DB_TXNVERSION 1
typedef enum {
DB_TXN_ABORT=0, /* Public. */
DB_TXN_APPLY=1, /* Public. */
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_TXN_LOG_VERIFY=8 /* Internal. */
} 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)
#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. */
DB_THREAD_INFO *thread_info; /* Pointer to thread information. */
u_int32_t txnid; /* Unique transaction id. */
char *name; /* Transaction name. */
DB_LOCKER *locker; /* Locker for this txn. */
void *td; /* Detail structure within region. */
db_timeout_t lock_timeout; /* Timeout for locks for this txn. */
void *txn_list; /* Undo information for parent. */
/*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_ENTRY(__db_txn) links;
*/
struct {
struct __db_txn *tqe_next;
struct __db_txn **tqe_prev;
} links; /* Links transactions off manager. */
/*
* !!!
* Explicit representations of structures from shqueue.h.
* SH_TAILQ_ENTRY xa_links;
* These links link together transactions that are active in
* the same thread of control.
*/
struct {
db_ssize_t stqe_next;
db_ssize_t stqe_prev;
} xa_links; /* Links 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; /* Links of children in parent. */
/*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_HEAD(__my_cursors, __dbc) my_cursors;
*/
struct __my_cursors {
struct __dbc *tqh_first;
struct __dbc **tqh_last;
} my_cursors;
/*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_HEAD(__femfs, MPOOLFILE) femfs;
*
* These are DBs involved in file extension in this transaction.
*/
struct __femfs {
DB *tqh_first;
DB **tqh_last;
} femfs;
DB_TXN_TOKEN *token_buffer; /* User's commit token buffer. */
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 **));
int (*get_priority) __P((DB_TXN *, u_int32_t *));
u_int32_t (*id) __P((DB_TXN *));
int (*prepare) __P((DB_TXN *, u_int8_t *));
int (*set_commit_token) __P((DB_TXN *, DB_TXN_TOKEN *));
int (*set_name) __P((DB_TXN *, const char *));
int (*set_priority) __P((DB_TXN *, u_int32_t));
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_XA_THREAD_NOTA 0
#define TXN_XA_THREAD_ASSOCIATED 1
#define TXN_XA_THREAD_SUSPENDED 2
#define TXN_XA_THREAD_UNASSOCIATED 3
u_int32_t xa_thr_status;
#define TXN_CHILDCOMMIT 0x00001 /* Txn has committed. */
#define TXN_COMPENSATE 0x00002 /* Compensating transaction. */
#define TXN_DEADLOCK 0x00004 /* Txn has deadlocked. */
#define TXN_FAMILY 0x00008 /* Cursors/children are independent. */
#define TXN_IGNORE_LEASE 0x00010 /* Skip lease check at commit time. */
#define TXN_INFAMILY 0x00020 /* Part of a transaction family. */
#define TXN_LOCKTIMEOUT 0x00040 /* Txn has a lock timeout. */
#define TXN_MALLOC 0x00080 /* Structure allocated by TXN system. */
#define TXN_NOSYNC 0x00100 /* Do not sync on prepare and commit. */
#define TXN_NOWAIT 0x00200 /* Do not wait on locks. */
#define TXN_PRIVATE 0x00400 /* Txn owned by cursor. */
#define TXN_READONLY 0x00800 /* CDS group handle. */
#define TXN_READ_COMMITTED 0x01000 /* Txn has degree 2 isolation. */
#define TXN_READ_UNCOMMITTED 0x02000 /* Txn has degree 1 isolation. */
#define TXN_RESTORED 0x04000 /* Txn has been restored. */
#define TXN_SNAPSHOT 0x08000 /* Snapshot Isolation. */
#define TXN_SYNC 0x10000 /* Write and sync on prepare/commit. */
#define TXN_WRITE_NOSYNC 0x20000 /* Write only on prepare/commit. */
#define TXN_BULK 0x40000 /* Enable bulk loading optimization. */
u_int32_t flags;
};
#define TXN_SYNC_FLAGS (TXN_SYNC | TXN_NOSYNC | TXN_WRITE_NOSYNC)
/*
* Structure used for two phase commit interface.
* We set the size of our global transaction id (gid) to be 128 in order
* to match that defined by the XA X/Open standard.
*/
#define DB_GID_SIZE 128
struct __db_preplist {
DB_TXN *txn;
u_int8_t gid[DB_GID_SIZE];
};
/* 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 */
u_int32_t priority; /* Deadlock resolution priority */
#define TXN_ABORTED 1
#define TXN_COMMITTED 2
#define TXN_NEED_ABORT 3
#define TXN_PREPARED 4
#define TXN_RUNNING 5
u_int32_t status; /* Status of the transaction */
#define TXN_XA_ACTIVE 1
#define TXN_XA_DEADLOCKED 2
#define TXN_XA_IDLE 3
#define TXN_XA_PREPARED 4
#define TXN_XA_ROLLEDBACK 5
u_int32_t xa_status; /* XA status */
u_int8_t gid[DB_GID_SIZE]; /* 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_inittxns; /* inital txns allocated */
u_int32_t st_maxtxns; /* maximum txns possible */
uintmax_t st_naborts; /* number of aborted transactions */
uintmax_t st_nbegins; /* number of begun transactions */
uintmax_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 */
uintmax_t st_region_wait; /* Region lock granted after wait. */
uintmax_t st_region_nowait; /* Region lock granted without wait. */
roff_t st_regsize; /* Region size. */
DB_TXN_ACTIVE *st_txnarray; /* array of active transactions */
#endif
};
#define DB_TXN_TOKEN_SIZE 20
struct __db_txn_token {
u_int8_t buf[DB_TXN_TOKEN_SIZE];
};
/*******************************************************
* Replication.
*******************************************************/
/* Special, out-of-band environment IDs. */
#define DB_EID_BROADCAST -1
#define DB_EID_INVALID -2
#define DB_EID_MASTER -3
#define DB_REP_DEFAULT_PRIORITY 100
/* Acknowledgement policies; 0 reserved as OOB. */
#define DB_REPMGR_ACKS_ALL 1
#define DB_REPMGR_ACKS_ALL_AVAILABLE 2
#define DB_REPMGR_ACKS_ALL_PEERS 3
#define DB_REPMGR_ACKS_NONE 4
#define DB_REPMGR_ACKS_ONE 5
#define DB_REPMGR_ACKS_ONE_PEER 6
#define DB_REPMGR_ACKS_QUORUM 7
/* Replication timeout configuration values. */
#define DB_REP_ACK_TIMEOUT 1 /* RepMgr acknowledgements. */
#define DB_REP_CHECKPOINT_DELAY 2 /* Master checkpoint delay. */
#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_HEARTBEAT_MONITOR 7 /* RepMgr client HB monitor. */
#define DB_REP_HEARTBEAT_SEND 8 /* RepMgr master send freq. */
#define DB_REP_LEASE_TIMEOUT 9 /* Master leases. */
/*
* Event notification types. (Tcl testing interface currently assumes there are
* no more than 32 of these.)
*/
#define DB_EVENT_PANIC 0
#define DB_EVENT_REG_ALIVE 1
#define DB_EVENT_REG_PANIC 2
#define DB_EVENT_REP_CLIENT 3
#define DB_EVENT_REP_CONNECT_BROKEN 4
#define DB_EVENT_REP_CONNECT_ESTD 5
#define DB_EVENT_REP_CONNECT_TRY_FAILED 6
#define DB_EVENT_REP_DUPMASTER 7
#define DB_EVENT_REP_ELECTED 8
#define DB_EVENT_REP_ELECTION_FAILED 9
#define DB_EVENT_REP_INIT_DONE 10
#define DB_EVENT_REP_JOIN_FAILURE 11
#define DB_EVENT_REP_LOCAL_SITE_REMOVED 12
#define DB_EVENT_REP_MASTER 13
#define DB_EVENT_REP_MASTER_FAILURE 14
#define DB_EVENT_REP_NEWMASTER 15
#define DB_EVENT_REP_PERM_FAILED 16
#define DB_EVENT_REP_SITE_ADDED 17
#define DB_EVENT_REP_SITE_REMOVED 18
#define DB_EVENT_REP_STARTUPDONE 19
#define DB_EVENT_REP_WOULD_ROLLBACK 20 /* Undocumented; C API only. */
#define DB_EVENT_WRITE_FAILED 21
#define DB_EVENT_NO_SUCH_EVENT 0xffffffff /* OOB sentinel value */
/* Replication Manager site status. */
struct __db_repmgr_site {
int eid;
char *host;
u_int port;
#define DB_REPMGR_CONNECTED 1
#define DB_REPMGR_DISCONNECTED 2
u_int32_t status;
#define DB_REPMGR_ISPEER 0x01
u_int32_t flags;
};
/* Replication statistics. */
struct __db_rep_stat { /* SHARED */
/* !!!
* 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_startup_complete; /* Site completed client sync-up. */
#ifndef __TEST_DB_NO_STATISTICS
uintmax_t st_log_queued; /* Log records currently queued.+ */
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_LSN st_max_perm_lsn; /* Maximum permanent LSN. */
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.+ */
db_ssize_t st_env_id; /* Current environment ID. */
u_int32_t st_env_priority; /* Current environment priority. */
uintmax_t st_bulk_fills; /* Bulk buffer fills. */
uintmax_t st_bulk_overflows; /* Bulk buffer overflows. */
uintmax_t st_bulk_records; /* Bulk records stored. */
uintmax_t st_bulk_transfers; /* Transfers of bulk buffers. */
uintmax_t st_client_rerequests;/* Number of forced rerequests. */
uintmax_t st_client_svc_req; /* Number of client service requests
received by this client. */
uintmax_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. */
uintmax_t st_lease_chk; /* Lease validity checks. */
uintmax_t st_lease_chk_misses; /* Lease checks invalid. */
uintmax_t st_lease_chk_refresh; /* Lease refresh attempts. */
uintmax_t st_lease_sends; /* Lease messages sent live. */
uintmax_t st_log_duplicated; /* Log records received multiply.+ */
uintmax_t st_log_queued_max; /* Max. log records queued at once.+ */
uintmax_t st_log_queued_total; /* Total # of log recs. ever queued.+ */
uintmax_t st_log_records; /* Log records received and put.+ */
uintmax_t st_log_requested; /* Log recs. missed and requested.+ */
db_ssize_t st_master; /* Env. ID of the current master. */
uintmax_t st_master_changes; /* # of times we've switched masters. */
uintmax_t st_msgs_badgen; /* Messages with a bad generation #.+ */
uintmax_t st_msgs_processed; /* Messages received and processed.+ */
uintmax_t st_msgs_recover; /* Messages ignored because this site
was a client in recovery.+ */
uintmax_t st_msgs_send_failures;/* # of failed message sends.+ */
uintmax_t st_msgs_sent; /* # of successful message sends.+ */
uintmax_t st_newsites; /* # of NEWSITE msgs. received.+ */
u_int32_t st_nsites; /* Current number of sites we will
assume during elections. */
uintmax_t st_nthrottles; /* # of times we were throttled. */
uintmax_t st_outdated; /* # of times we detected and returned
an OUTDATED condition.+ */
uintmax_t st_pg_duplicated; /* Pages received multiply.+ */
uintmax_t st_pg_records; /* Pages received and stored.+ */
uintmax_t st_pg_requested; /* Pages missed and requested.+ */
uintmax_t st_txns_applied; /* # of transactions applied.+ */
uintmax_t st_startsync_delayed;/* # of STARTSYNC msgs delayed.+ */
/* Elections generally. */
uintmax_t st_elections; /* # of elections held.+ */
uintmax_t st_elections_won; /* # of elections won by this site.+ */
/* Statistics about an in-progress election. */
db_ssize_t st_election_cur_winner; /* Current front-runner. */
u_int32_t st_election_gen; /* Election generation number. */
u_int32_t st_election_datagen; /* Election data generation number. */
DB_LSN st_election_lsn; /* Max. LSN of current winner. */
u_int32_t st_election_nsites; /* # of "registered voters". */
u_int32_t st_election_nvotes; /* # of "registered voters" needed. */
u_int32_t st_election_priority; /* Current election priority. */
int32_t st_election_status; /* Current election status. */
u_int32_t st_election_tiebreaker;/* Election tiebreaker value. */
u_int32_t 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. */
u_int32_t st_max_lease_sec; /* Maximum lease timestamp seconds. */
u_int32_t st_max_lease_usec; /* Maximum lease timestamp useconds. */
/* Undocumented statistics only used by the test system. */
#ifdef CONFIG_TEST
u_int32_t st_filefail_cleanups; /* # of FILE_FAIL cleanups done. */
#endif
#endif
};
/* Replication Manager statistics. */
struct __db_repmgr_stat { /* SHARED */
uintmax_t st_perm_failed; /* # of insufficiently ack'ed msgs. */
uintmax_t st_msgs_queued; /* # msgs queued for network delay. */
uintmax_t st_msgs_dropped; /* # msgs discarded due to excessive
queue length. */
uintmax_t st_connection_drop; /* Existing connections dropped. */
uintmax_t st_connect_fail; /* Failed new connection attempts. */
uintmax_t st_elect_threads; /* # of active election threads. */
uintmax_t st_max_elect_threads; /* Max concurrent e-threads ever. */
};
/* Replication Manager connection error. */
struct __db_repmgr_conn_err {
int eid; /* Replication Environment ID. */
int error; /* System networking error code. */
};
/*******************************************************
* Sequences.
*******************************************************/
/*
* The storage record for a sequence.
*/
struct __db_seq_record {
u_int32_t seq_version; /* Version size/number. */
u_int32_t flags; /* DB_SEQ_XXX 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. */
db_seq_t seq_prev_value; /* Last value returned. */
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 { /* SHARED */
uintmax_t st_wait; /* Sequence lock granted w/o wait. */
uintmax_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.
*******************************************************/
/*
* Any new methods need to retain the original numbering. The type
* is written in a log record so must be maintained.
*/
typedef enum {
DB_BTREE=1,
DB_HASH=2,
DB_HEAP=6,
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_HEAPVERSION 1 /* Current heap version. */
#define DB_HEAPOLDVER 1 /* Oldest heap version supported. */
#define DB_HEAPMAGIC 0x074582
#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_OVERWRITE_DUP 21 /* Dbc.put, Db.put; no DB_KEYEXIST */
#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_SET_LTE 30 /* Dbc.get (internal) */
#define DB_GET_BOTH_LTE 31 /* Dbc.get (internal) */
/* This has to change when the max opcode hits 255. */
#define DB_OPFLAGS_MASK 0x000000ff /* Mask for operations flags. */
/*
* 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_FOREIGN_CONFLICT (-30997)/* A foreign db constraint triggered. */
#define DB_HEAP_FULL (-30996)/* No free space in a heap file. */
#define DB_KEYEMPTY (-30995)/* Key/data deleted or never created. */
#define DB_KEYEXIST (-30994)/* The key/data pair already exists. */
#define DB_LOCK_DEADLOCK (-30993)/* Deadlock. */
#define DB_LOCK_NOTGRANTED (-30992)/* Lock unavailable. */
#define DB_LOG_BUFFER_FULL (-30991)/* In-memory log buffer full. */
#define DB_LOG_VERIFY_BAD (-30990)/* Log verification failed. */
#define DB_NOSERVER (-30989)/* Server panic return. */
#define DB_NOTFOUND (-30988)/* Key/data pair not found (EOF). */
#define DB_OLD_VERSION (-30987)/* Out-of-date version. */
#define DB_PAGE_NOTFOUND (-30986)/* Requested page not found. */
#define DB_REP_DUPMASTER (-30985)/* There are two masters. */
#define DB_REP_HANDLE_DEAD (-30984)/* Rolled back a commit. */
#define DB_REP_HOLDELECTION (-30983)/* Time to hold an election. */
#define DB_REP_IGNORE (-30982)/* This msg should be ignored.*/
#define DB_REP_ISPERM (-30981)/* Cached not written perm written.*/
#define DB_REP_JOIN_FAILURE (-30980)/* Unable to join replication group. */
#define DB_REP_LEASE_EXPIRED (-30979)/* Master lease has expired. */
#define DB_REP_LOCKOUT (-30978)/* API/Replication lockout now. */
#define DB_REP_NEWSITE (-30977)/* New site entered system. */
#define DB_REP_NOTPERM (-30976)/* Permanent log record not written. */
#define DB_REP_UNAVAIL (-30975)/* Site cannot currently be reached. */
#define DB_REP_WOULDROLLBACK (-30974)/* UNDOC: rollback inhibited by app. */
#define DB_RUNRECOVERY (-30973)/* Panic return. */
#define DB_SECONDARY_BAD (-30972)/* Secondary index corrupt. */
#define DB_TIMEOUT (-30971)/* Timed out on read consistency. */
#define DB_VERIFY_BAD (-30970)/* Verify failed; bad format. */
#define DB_VERSION_MISMATCH (-30969)/* Environment version mismatch. */
/* DB (private) error return codes. */
#define DB_ALREADY_ABORTED (-30899)
#define DB_CHKSUM_FAIL (-30898)/* Checksum failed. */
#define DB_DELETED (-30897)/* Recovery file marked deleted. */
#define DB_EVENT_NOT_HANDLED (-30896)/* Forward event to application. */
#define DB_NEEDSPLIT (-30895)/* Page needs to be split. */
#define DB_REP_BULKOVF (-30894)/* Rep bulk buffer overflow. */
#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_TXN_CKP (-30888)/* Encountered ckp record in log. */
#define DB_VERIFY_FATAL (-30887)/* 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 public environment. */
ENV *env; /* Backing private 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. */
const char *dirname; /* Directory of DB file. */
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. */
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 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. */
#define DB_ASSOC_CREATE 0x00000002 /* Secondary db populated on open. */
/* Flags passed to associate -- set in the secondary. */
u_int32_t s_assoc_flags;
/*
* Foreign key support.
*
* Linked list of primary dbs -- set in the foreign db
*
* !!!
* Explicit representations of structures from queue.h.
* LIST_HEAD(f_primaries, __db);
*/
struct {
struct __db_foreign_info *lh_first;
} f_primaries;
/*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_ENTRY(__db) felink;
*
* Links in a list of DBs involved in file extension
* during a transaction. These are to be used only while the
* metadata is locked.
*/
struct {
struct __db *tqe_next;
struct __db **tqe_prev;
} felink;
/* Reference to foreign -- set in the secondary. */
DB *s_foreign;
/* 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 *heap_internal; /* Heap access method. */
void *p_internal; /* Partition informaiton. */
void *q_internal; /* Queue access method. */
/* DB PUBLIC HANDLE LIST BEGIN */
int (*associate) __P((DB *, DB_TXN *, DB *,
int (*)(DB *, const DBT *, const DBT *, DBT *), u_int32_t));
int (*associate_foreign) __P((DB *, DB *,
int (*)(DB *, const DBT *, DBT *, const DBT *, int *),
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_alloc) __P((DB *, void *(**)(size_t),
void *(**)(void *, size_t), void (**)(void *)));
int (*get_append_recno) __P((DB *, int (**)(DB *, DBT *, db_recno_t)));
int (*get_assoc_flags) __P((DB *, u_int32_t *));
int (*get_bt_compare)
__P((DB *, int (**)(DB *, const DBT *, const DBT *)));
int (*get_bt_compress) __P((DB *,
int (**)(DB *,
const DBT *, const DBT *, const DBT *, const DBT *, DBT *),
int (**)(DB *, const DBT *, const DBT *, DBT *, DBT *, DBT *)));
int (*get_bt_minkey) __P((DB *, u_int32_t *));
int (*get_bt_prefix)
__P((DB *, size_t (**)(DB *, const DBT *, const DBT *)));
int (*get_byteswapped) __P((DB *, int *));
int (*get_cachesize) __P((DB *, u_int32_t *, u_int32_t *, int *));
int (*get_create_dir) __P((DB *, const char **));
int (*get_dbname) __P((DB *, const char **, const char **));
int (*get_dup_compare)
__P((DB *, int (**)(DB *, const DBT *, const DBT *)));
int (*get_encrypt_flags) __P((DB *, u_int32_t *));
DB_ENV *(*get_env) __P((DB *));
void (*get_errcall) __P((DB *,
void (**)(const DB_ENV *, const char *, const char *)));
void (*get_errfile) __P((DB *, FILE **));
void (*get_errpfx) __P((DB *, const char **));
int (*get_feedback) __P((DB *, void (**)(DB *, int, int)));
int (*get_flags) __P((DB *, u_int32_t *));
int (*get_h_compare)
__P((DB *, int (**)(DB *, const DBT *, const DBT *)));
int (*get_h_ffactor) __P((DB *, u_int32_t *));
int (*get_h_hash)
__P((DB *, u_int32_t (**)(DB *, const void *, u_int32_t)));
int (*get_h_nelem) __P((DB *, u_int32_t *));
int (*get_heapsize) __P((DB *, u_int32_t *, u_int32_t *));
int (*get_heap_regionsize) __P((DB *, u_int32_t *));
int (*get_lk_exclusive) __P((DB *, int *, int *));
int (*get_lorder) __P((DB *, int *));
DB_MPOOLFILE *(*get_mpf) __P((DB *));
void (*get_msgcall) __P((DB *,
void (**)(const DB_ENV *, const char *)));
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_partition_callback) __P((DB *,
u_int32_t *, u_int32_t (**)(DB *, DBT *key)));
int (*get_partition_dirs) __P((DB *, const char ***));
int (*get_partition_keys) __P((DB *, u_int32_t *, DBT **));
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_compress) __P((DB *,
int (*)(DB *, const DBT *, const DBT *, const DBT *, const DBT *, DBT *),
int (*)(DB *, const DBT *, const DBT *, DBT *, DBT *, 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_create_dir) __P((DB *, const char *));
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_heapsize) __P((DB *, u_int32_t, u_int32_t, u_int32_t));
int (*set_heap_regionsize) __P((DB *, u_int32_t));
int (*set_lk_exclusive) __P((DB *, int));
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_partition) __P((DB *,
u_int32_t, DBT *, u_int32_t (*)(DB *, DBT *key)));
int (*set_partition_dirs) __P((DB *, const char **));
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 (*sort_multiple) __P((DB *, DBT *, DBT *, u_int32_t));
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_THREAD_INFO *,
DB_TXN *, const char *, const char *, u_int32_t));
int (*db_am_rename) __P((DB *, DB_THREAD_INFO *,
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));
/* Alternative handle close function, used by C++ API. */
int (*alt_close) __P((DB *, u_int32_t));
#define DB_OK_BTREE 0x01
#define DB_OK_HASH 0x02
#define DB_OK_HEAP 0x04
#define DB_OK_QUEUE 0x08
#define DB_OK_RECNO 0x10
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_COMPRESS 0x00000004 /* Compressed BTree */
#define DB_AM_CREATED 0x00000008 /* Database was created upon open */
#define DB_AM_CREATED_MSTR 0x00000010 /* Encompassing file was created */
#define DB_AM_DBM_ERROR 0x00000020 /* Error in DBM/NDBM database */
#define DB_AM_DELIMITER 0x00000040 /* Variable length delimiter set */
#define DB_AM_DISCARD 0x00000080 /* Discard any cached pages */
#define DB_AM_DUP 0x00000100 /* DB_DUP */
#define DB_AM_DUPSORT 0x00000200 /* DB_DUPSORT */
#define DB_AM_ENCRYPT 0x00000400 /* Encryption */
#define DB_AM_FIXEDLEN 0x00000800 /* Fixed-length records */
#define DB_AM_INMEM 0x00001000 /* In-memory; no sync on close */
#define DB_AM_INORDER 0x00002000 /* DB_INORDER */
#define DB_AM_IN_RENAME 0x00004000 /* File is being renamed */
#define DB_AM_NOT_DURABLE 0x00008000 /* Do not log changes */
#define DB_AM_OPEN_CALLED 0x00010000 /* DB->open called */
#define DB_AM_PAD 0x00020000 /* Fixed-length record pad */
#define DB_AM_PARTDB 0x00040000 /* Handle for a database partition */
#define DB_AM_PGDEF 0x00080000 /* Page size was defaulted */
#define DB_AM_RDONLY 0x00100000 /* Database is readonly */
#define DB_AM_READ_UNCOMMITTED 0x00200000 /* Support degree 1 isolation */
#define DB_AM_RECNUM 0x00400000 /* DB_RECNUM */
#define DB_AM_RECOVER 0x00800000 /* DB opened by recovery routine */
#define DB_AM_RENUMBER 0x01000000 /* DB_RENUMBER */
#define DB_AM_REVSPLITOFF 0x02000000 /* DB_REVSPLITOFF */
#define DB_AM_SECONDARY 0x04000000 /* Database is a secondary index */
#define DB_AM_SNAPSHOT 0x08000000 /* DB_SNAPSHOT */
#define DB_AM_SUBDB 0x10000000 /* Subdatabases supported */
#define DB_AM_SWAP 0x20000000 /* Pages need to be byte-swapped */
#define DB_AM_TXN 0x40000000 /* Opened in a transaction */
#define DB_AM_VERIFYING 0x80000000 /* DB handle is in the verifier */
u_int32_t orig_flags; /* Flags at open, for refresh */
u_int32_t flags;
#define DB2_AM_EXCL 0x00000001 /* Exclusively lock the handle */
#define DB2_AM_INTEXCL 0x00000002 /* Internal exclusive lock. */
#define DB2_AM_NOWAIT 0x00000004 /* Do not wait for handle lock */
u_int32_t orig_flags2; /* Second flags word; for refresh */
u_int32_t flags2; /* Second flags word */
};
/*
* Macros for bulk operations. These are only intended for the C API.
* For C++, use DbMultiple*Iterator or DbMultiple*Builder.
*
* Bulk operations store multiple entries into a single DBT structure. The
* following macros assist with creating and reading these Multiple DBTs.
*
* The basic layout for single data items is:
*
* -------------------------------------------------------------------------
* | data1 | ... | dataN | ..... |-1 | dNLen | dNOff | ... | d1Len | d1Off |
* -------------------------------------------------------------------------
*
* For the DB_MULTIPLE_KEY* macros, the items are in key/data pairs, so data1
* would be a key, and data2 its corresponding value (N is always even).
*
* For the DB_MULTIPLE_RECNO* macros, the record number is stored along with
* the len/off pair in the "header" section, and the list is zero terminated
* (since -1 is a valid record number):
*
* --------------------------------------------------------------------------
* | d1 |..| dN |..| 0 | dNLen | dNOff | recnoN |..| d1Len | d1Off | recno1 |
* --------------------------------------------------------------------------
*/
#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 { \
u_int32_t *__p = (u_int32_t *)(pointer); \
if (*__p == (u_int32_t)-1) { \
retdata = NULL; \
pointer = NULL; \
break; \
} \
retdata = (u_int8_t *)(dbt)->data + *__p--; \
retdlen = *__p--; \
pointer = __p; \
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 { \
u_int32_t *__p = (u_int32_t *)(pointer); \
if (*__p == (u_int32_t)-1) { \
retdata = NULL; \
retkey = NULL; \
pointer = NULL; \
break; \
} \
retkey = (u_int8_t *)(dbt)->data + *__p--; \
retklen = *__p--; \
retdata = (u_int8_t *)(dbt)->data + *__p--; \
retdlen = *__p--; \
pointer = __p; \
} while (0)
#define DB_MULTIPLE_RECNO_NEXT(pointer, dbt, recno, retdata, retdlen) \
do { \
u_int32_t *__p = (u_int32_t *)(pointer); \
if (*__p == (u_int32_t)0) { \
recno = 0; \
retdata = NULL; \
pointer = NULL; \
break; \
} \
recno = *__p--; \
retdata = (u_int8_t *)(dbt)->data + *__p--; \
retdlen = *__p--; \
pointer = __p; \
} while (0)
#define DB_MULTIPLE_WRITE_INIT(pointer, dbt) \
do { \
(dbt)->flags |= DB_DBT_BULK; \
pointer = (u_int8_t *)(dbt)->data + \
(dbt)->ulen - sizeof(u_int32_t); \
*(u_int32_t *)(pointer) = (u_int32_t)-1; \
} while (0)
#define DB_MULTIPLE_RESERVE_NEXT(pointer, dbt, writedata, writedlen) \
do { \
u_int32_t *__p = (u_int32_t *)(pointer); \
u_int32_t __off = ((pointer) == (u_int8_t *)(dbt)->data +\
(dbt)->ulen - sizeof(u_int32_t)) ? 0 : __p[1] + __p[2];\
if ((u_int8_t *)(dbt)->data + __off + (writedlen) > \
(u_int8_t *)(__p - 2)) \
writedata = NULL; \
else { \
writedata = (u_int8_t *)(dbt)->data + __off; \
__p[0] = __off; \
__p[-1] = (u_int32_t)(writedlen); \
__p[-2] = (u_int32_t)-1; \
pointer = __p - 2; \
} \
} while (0)
#define DB_MULTIPLE_WRITE_NEXT(pointer, dbt, writedata, writedlen) \
do { \
void *__destd; \
DB_MULTIPLE_RESERVE_NEXT((pointer), (dbt), \
__destd, (writedlen)); \
if (__destd == NULL) \
pointer = NULL; \
else \
memcpy(__destd, (writedata), (writedlen)); \
} while (0)
#define DB_MULTIPLE_KEY_RESERVE_NEXT(pointer, dbt, writekey, writeklen, writedata, writedlen) \
do { \
u_int32_t *__p = (u_int32_t *)(pointer); \
u_int32_t __off = ((pointer) == (u_int8_t *)(dbt)->data +\
(dbt)->ulen - sizeof(u_int32_t)) ? 0 : __p[1] + __p[2];\
if ((u_int8_t *)(dbt)->data + __off + (writeklen) + \
(writedlen) > (u_int8_t *)(__p - 4)) { \
writekey = NULL; \
writedata = NULL; \
} else { \
writekey = (u_int8_t *)(dbt)->data + __off; \
__p[0] = __off; \
__p[-1] = (u_int32_t)(writeklen); \
__p -= 2; \
__off += (u_int32_t)(writeklen); \
writedata = (u_int8_t *)(dbt)->data + __off; \
__p[0] = __off; \
__p[-1] = (u_int32_t)(writedlen); \
__p[-2] = (u_int32_t)-1; \
pointer = __p - 2; \
} \
} while (0)
#define DB_MULTIPLE_KEY_WRITE_NEXT(pointer, dbt, writekey, writeklen, writedata, writedlen) \
do { \
void *__destk, *__destd; \
DB_MULTIPLE_KEY_RESERVE_NEXT((pointer), (dbt), \
__destk, (writeklen), __destd, (writedlen)); \
if (__destk == NULL) \
pointer = NULL; \
else { \
memcpy(__destk, (writekey), (writeklen)); \
if (__destd != NULL) \
memcpy(__destd, (writedata), (writedlen));\
} \
} while (0)
#define DB_MULTIPLE_RECNO_WRITE_INIT(pointer, dbt) \
do { \
(dbt)->flags |= DB_DBT_BULK; \
pointer = (u_int8_t *)(dbt)->data + \
(dbt)->ulen - sizeof(u_int32_t); \
*(u_int32_t *)(pointer) = 0; \
} while (0)
#define DB_MULTIPLE_RECNO_RESERVE_NEXT(pointer, dbt, recno, writedata, writedlen) \
do { \
u_int32_t *__p = (u_int32_t *)(pointer); \
u_int32_t __off = ((pointer) == (u_int8_t *)(dbt)->data +\
(dbt)->ulen - sizeof(u_int32_t)) ? 0 : __p[1] + __p[2]; \
if (((u_int8_t *)(dbt)->data + __off) + (writedlen) > \
(u_int8_t *)(__p - 3)) \
writedata = NULL; \
else { \
writedata = (u_int8_t *)(dbt)->data + __off; \
__p[0] = (u_int32_t)(recno); \
__p[-1] = __off; \
__p[-2] = (u_int32_t)(writedlen); \
__p[-3] = 0; \
pointer = __p - 3; \
} \
} while (0)
#define DB_MULTIPLE_RECNO_WRITE_NEXT(pointer, dbt, recno, writedata, writedlen)\
do { \
void *__destd; \
DB_MULTIPLE_RECNO_RESERVE_NEXT((pointer), (dbt), \
(recno), __destd, (writedlen)); \
if (__destd == NULL) \
pointer = NULL; \
else if ((writedlen) != 0) \
memcpy(__destd, (writedata), (writedlen)); \
} while (0)
struct __db_heap_rid {
db_pgno_t pgno; /* Page number. */
db_indx_t indx; /* Index in the offset table. */
};
#define DB_HEAP_RID_SZ (sizeof(db_pgno_t) + sizeof(db_indx_t))
/*******************************************************
* Access method cursors.
*******************************************************/
struct __dbc {
DB *dbp; /* Backing database */
DB_ENV *dbenv; /* Backing environment */
ENV *env; /* Backing environment */
DB_THREAD_INFO *thread_info; /* Thread that owns this cursor. */
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;
/*
* Cursor queue of the owning transaction.
*
* !!!
* Explicit representations of structures from queue.h.
* TAILQ_ENTRY(__dbc) txn_cursors;
*/
struct {
DBC *tqe_next; /* next element */
DBC **tqe_prev; /* address of previous next element */
} txn_cursors;
/*
* 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. */
DB_LOCKER *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. */
DBTYPE dbtype; /* Cursor type. */
DBC_INTERNAL *internal; /* Access method private. */
/* DBC PUBLIC HANDLE LIST BEGIN */
int (*close) __P((DBC *));
int (*cmp) __P((DBC *, DBC *, int *, u_int32_t));
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 *, u_int32_t));
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 0x00001 /* Cursor in use. */
#define DBC_BULK 0x00002 /* Bulk update cursor. */
#define DBC_DONTLOCK 0x00004 /* Don't lock on this cursor. */
#define DBC_DOWNREV 0x00008 /* Down rev replication master. */
#define DBC_DUPLICATE 0x00010 /* Create a duplicate cursor. */
#define DBC_ERROR 0x00020 /* Error in this request. */
#define DBC_FAMILY 0x00040 /* Part of a locker family. */
#define DBC_FROM_DB_GET 0x00080 /* Called from the DB->get() method. */
#define DBC_MULTIPLE 0x00100 /* Return Multiple data. */
#define DBC_MULTIPLE_KEY 0x00200 /* Return Multiple keys and data. */
#define DBC_OPD 0x00400 /* Cursor references off-page dups. */
#define DBC_OWN_LID 0x00800 /* Free lock id on destroy. */
#define DBC_PARTITIONED 0x01000 /* Cursor for a partitioned db. */
#define DBC_READ_COMMITTED 0x02000 /* Cursor has degree 2 isolation. */
#define DBC_READ_UNCOMMITTED 0x04000 /* Cursor has degree 1 isolation. */
#define DBC_RECOVER 0x08000 /* Recovery cursor; don't log/lock. */
#define DBC_RMW 0x10000 /* Acquire write flag in read op. */
#define DBC_TRANSIENT 0x20000 /* Cursor is transient. */
#define DBC_WAS_READ_COMMITTED 0x40000 /* Cursor holds a read commited lock. */
#define DBC_WRITECURSOR 0x80000 /* Cursor may be used to write (CDB). */
#define DBC_WRITER 0x100000 /* 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 { /* SHARED */
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. */
uintmax_t bt_int_pgfree; /* Bytes free in internal pages. */
uintmax_t bt_leaf_pgfree; /* Bytes free in leaf pages. */
uintmax_t bt_dup_pgfree; /* Bytes free in duplicate pages. */
uintmax_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_empty_buckets; /* Empty hash buckets found. */
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; /* Exchange pages above here. */
};
/* Hash statistics structure. */
struct __db_h_stat { /* SHARED */
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. */
uintmax_t hash_bfree; /* Bytes free on bucket pages. */
u_int32_t hash_bigpages; /* Number of big key/data pages. */
uintmax_t hash_big_bfree; /* Bytes free on big item pages. */
u_int32_t hash_overflows; /* Number of overflow pages. */
uintmax_t hash_ovfl_free; /* Bytes free on ovfl pages. */
u_int32_t hash_dup; /* Number of dup pages. */
uintmax_t hash_dup_free; /* Bytes free on duplicate pages. */
};
/* Heap statistics structure. */
struct __db_heap_stat { /* SHARED */
u_int32_t heap_magic; /* Magic number. */
u_int32_t heap_version; /* Version number. */
u_int32_t heap_metaflags; /* Metadata flags. */
u_int32_t heap_nrecs; /* Number of records. */
u_int32_t heap_pagecnt; /* Page count. */
u_int32_t heap_pagesize; /* Page size. */
u_int32_t heap_nregions; /* Number of regions. */
u_int32_t heap_regionsize; /* Number of pages in a region. */
};
/* Queue statistics structure. */
struct __db_qam_stat { /* SHARED */
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 structure.
*
* This is the public database environment handle. The private environment
* handle is the ENV structure. The user owns this structure, the library
* owns the ENV structure. The reason there are two structures is because
* the user's configuration outlives any particular DB_ENV->open call, and
* separate structures allows us to easily discard internal information without
* discarding the user's configuration.
*
* Fields in the DB_ENV structure should normally be set only by application
* DB_ENV handle methods.
*/
/*
* Memory configuration types.
*/
typedef enum {
DB_MEM_LOCK=1,
DB_MEM_LOCKOBJECT=2,
DB_MEM_LOCKER=3,
DB_MEM_LOGID=4,
DB_MEM_TRANSACTION=5,
DB_MEM_THREAD=6
} DB_MEM_CONFIG;
/*
* Backup configuration types.
*/
typedef enum {
DB_BACKUP_READ_COUNT = 1,
DB_BACKUP_READ_SLEEP = 2,
DB_BACKUP_SIZE = 3,
DB_BACKUP_WRITE_DIRECT = 4
} DB_BACKUP_CONFIG;
struct __db_env {
ENV *env; /* Linked ENV structure */
/*
* The DB_ENV structure can be used concurrently, so field access is
* protected.
*/
db_mutex_t mtx_db_env; /* DB_ENV structure mutex */
/* 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 */
/* Other message callback */
void (*db_msgcall) __P((const DB_ENV *, const char *));
FILE *db_msgfile; /* Other message file stream */
/* Other application callback functions */
int (*app_dispatch) __P((DB_ENV *, DBT *, DB_LSN *, db_recops));
void (*db_event_func) __P((DB_ENV *, u_int32_t, void *));
void (*db_feedback) __P((DB_ENV *, int, int));
void (*db_free) __P((void *));
void (*db_paniccall) __P((DB_ENV *, int));
void *(*db_malloc) __P((size_t));
void *(*db_realloc) __P((void *, size_t));
int (*is_alive) __P((DB_ENV *, pid_t, db_threadid_t, u_int32_t));
void (*thread_id) __P((DB_ENV *, pid_t *, db_threadid_t *));
char *(*thread_id_string) __P((DB_ENV *, pid_t, db_threadid_t, char *));
/* Application specified paths */
char *db_log_dir; /* Database log file directory */
char *db_md_dir; /* Persistent metadata directory */
char *db_tmp_dir; /* Database tmp file directory */
char *db_create_dir; /* Create directory for data files */
char **db_data_dir; /* Database data file directories */
int data_cnt; /* Database data file slots */
int data_next; /* Next database data file slot */
char *intermediate_dir_mode; /* Intermediate directory perms */
long shm_key; /* shmget key */
char *passwd; /* Cryptography support */
size_t passwd_len;
/* Private handle references */
void *app_private; /* Application-private handle */
void *api1_internal; /* C++, Perl API private */
void *api2_internal; /* Java API private */
u_int32_t verbose; /* DB_VERB_XXX flags */
/* Mutex configuration */
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_max; /* Max number of mutexes */
u_int32_t mutex_tas_spins;/* Test-and-set spin count */
/* Locking configuration */
u_int8_t *lk_conflicts; /* Two dimensional conflict matrix */
int lk_modes; /* Number of lock modes in table */
u_int32_t lk_detect; /* Deadlock detect on all conflicts */
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_init; /* Initial number of locks */
u_int32_t lk_init_lockers;/* Initial number of lockers */
u_int32_t lk_init_objects;/* Initial number of locked objects */
u_int32_t lk_partitions ;/* Number of object partitions */
db_timeout_t lk_timeout; /* Lock timeout period */
/* Used during initialization */
u_int32_t locker_t_size; /* Locker hash table size. */
u_int32_t object_t_size; /* Object hash table size. */
/* Logging configuration */
u_int32_t lg_bsize; /* Buffer size */
u_int32_t lg_fileid_init; /* Initial allocation for fname structs */
int lg_filemode; /* Log file permission mode */
u_int32_t lg_regionmax; /* Region size */
u_int32_t lg_size; /* Log file size */
u_int32_t lg_flags; /* Log configuration */
/* Memory pool configuration */
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 */
u_int mp_ncache; /* Initial number of cache regions */
u_int32_t mp_pagesize; /* Average page size */
u_int32_t mp_tablesize; /* Approximate hash table size */
u_int32_t mp_mtxcount; /* Number of mutexs */
/* Sleep after writing max buffers */
db_timeout_t mp_maxwrite_sleep;
/* Transaction configuration */
u_int32_t tx_init; /* Initial number of 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 configuration */
u_int32_t thr_init; /* Thread count */
u_int32_t thr_max; /* Thread max */
roff_t memory_max; /* Maximum region memory */
/*
* The following fields are not strictly user-owned, but they outlive
* the ENV structure, and so are stored here.
*/
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.
*/
db_timeout_t envreg_timeout; /* DB_REGISTER wait timeout */
#define DB_ENV_AUTO_COMMIT 0x00000001 /* DB_AUTO_COMMIT */
#define DB_ENV_CDB_ALLDB 0x00000002 /* CDB environment wide locking */
#define DB_ENV_FAILCHK 0x00000004 /* Failchk is running */
#define DB_ENV_DIRECT_DB 0x00000008 /* DB_DIRECT_DB set */
#define DB_ENV_DSYNC_DB 0x00000010 /* DB_DSYNC_DB set */
#define DB_ENV_DATABASE_LOCKING 0x00000020 /* Try database-level locking */
#define DB_ENV_MULTIVERSION 0x00000040 /* DB_MULTIVERSION set */
#define DB_ENV_NOLOCKING 0x00000080 /* DB_NOLOCKING set */
#define DB_ENV_NOMMAP 0x00000100 /* DB_NOMMAP set */
#define DB_ENV_NOPANIC 0x00000200 /* Okay if panic set */
#define DB_ENV_OVERWRITE 0x00000400 /* DB_OVERWRITE set */
#define DB_ENV_REGION_INIT 0x00000800 /* DB_REGION_INIT set */
#define DB_ENV_TIME_NOTGRANTED 0x00001000 /* DB_TIME_NOTGRANTED set */
#define DB_ENV_TXN_NOSYNC 0x00002000 /* DB_TXN_NOSYNC set */
#define DB_ENV_TXN_NOWAIT 0x00004000 /* DB_TXN_NOWAIT set */
#define DB_ENV_TXN_SNAPSHOT 0x00008000 /* DB_TXN_SNAPSHOT set */
#define DB_ENV_TXN_WRITE_NOSYNC 0x00010000 /* DB_TXN_WRITE_NOSYNC set */
#define DB_ENV_YIELDCPU 0x00020000 /* DB_YIELDCPU set */
#define DB_ENV_HOTBACKUP 0x00040000 /* DB_HOTBACKUP_IN_PROGRESS set */
#define DB_ENV_NOFLUSH 0x00080000 /* DB_NOFLUSH set */
u_int32_t flags;
/* DB_ENV PUBLIC HANDLE LIST BEGIN */
int (*add_data_dir) __P((DB_ENV *, const char *));
int (*backup) __P((DB_ENV *, const char *, u_int32_t));
int (*cdsgroup_begin) __P((DB_ENV *, DB_TXN **));
int (*close) __P((DB_ENV *, u_int32_t));
int (*dbbackup) __P((DB_ENV *, const char *, const char *, 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_alloc) __P((DB_ENV *, void *(**)(size_t),
void *(**)(void *, size_t), void (**)(void *)));
int (*get_app_dispatch)
__P((DB_ENV *, int (**)(DB_ENV *, DBT *, DB_LSN *, db_recops)));
int (*get_cache_max) __P((DB_ENV *, u_int32_t *, u_int32_t *));
int (*get_cachesize) __P((DB_ENV *, u_int32_t *, u_int32_t *, int *));
int (*get_create_dir) __P((DB_ENV *, const char **));
int (*get_data_dirs) __P((DB_ENV *, const char ***));
int (*get_data_len) __P((DB_ENV *, u_int32_t *));
int (*get_backup_callbacks) __P((DB_ENV *,
int (**)(DB_ENV *, const char *, const char *, void **),
int (**)(DB_ENV *, u_int32_t, u_int32_t, u_int32_t, u_int8_t *, void *),
int (**)(DB_ENV *, const char *, void *)));
int (*get_backup_config) __P((DB_ENV *, DB_BACKUP_CONFIG, u_int32_t *));
int (*get_encrypt_flags) __P((DB_ENV *, u_int32_t *));
void (*get_errcall) __P((DB_ENV *,
void (**)(const DB_ENV *, const char *, const char *)));
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_feedback) __P((DB_ENV *, void (**)(DB_ENV *, int, int)));
int (*get_home) __P((DB_ENV *, const char **));
int (*get_intermediate_dir_mode) __P((DB_ENV *, const char **));
int (*get_isalive) __P((DB_ENV *,
int (**)(DB_ENV *, pid_t, db_threadid_t, u_int32_t)));
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_lk_partitions) __P((DB_ENV *, u_int32_t *));
int (*get_lk_priority) __P((DB_ENV *, u_int32_t, u_int32_t *));
int (*get_lk_tablesize) __P((DB_ENV *, u_int32_t *));
int (*get_memory_init) __P((DB_ENV *, DB_MEM_CONFIG, u_int32_t *));
int (*get_memory_max) __P((DB_ENV *, u_int32_t *, u_int32_t *));
int (*get_metadata_dir) __P((DB_ENV *, const char **));
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 *));
int (*get_mp_mtxcount) __P((DB_ENV *, u_int32_t *));
int (*get_mp_pagesize) __P((DB_ENV *, u_int32_t *));
int (*get_mp_tablesize) __P((DB_ENV *, u_int32_t *));
void (*get_msgcall)
__P((DB_ENV *, void (**)(const DB_ENV *, const char *)));
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_thread_id_fn)
__P((DB_ENV *, void (**)(DB_ENV *, pid_t *, db_threadid_t *)));
int (*get_thread_id_string_fn) __P((DB_ENV *,
char *(**)(DB_ENV *, pid_t, db_threadid_t, char *)));
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, 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_get_config) __P((DB_ENV *, u_int32_t, int *));
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_put_record) __P((DB_ENV *, DB *, DB_TXN *, DB_LSN *,
u_int32_t, u_int32_t, u_int32_t, u_int32_t,
DB_LOG_RECSPEC *, ...));
int (*log_read_record) __P((DB_ENV *, DB **,
void *, void *, DB_LOG_RECSPEC *, u_int32_t, void **));
int (*log_set_config) __P((DB_ENV *, u_int32_t, int));
int (*log_stat) __P((DB_ENV *, DB_LOG_STAT **, u_int32_t));
int (*log_stat_print) __P((DB_ENV *, u_int32_t));
int (*log_verify) __P((DB_ENV *, const DB_LOG_VERIFY_CONFIG *));
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_init) __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_init) __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 *, u_int32_t, u_int32_t, u_int32_t));
int (*rep_flush) __P((DB_ENV *));
int (*rep_get_clockskew) __P((DB_ENV *, u_int32_t *, u_int32_t *));
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 *, u_int32_t *));
int (*rep_get_priority) __P((DB_ENV *, u_int32_t *));
int (*rep_get_request) __P((DB_ENV *, u_int32_t *, u_int32_t *));
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_clockskew) __P((DB_ENV *, u_int32_t, u_int32_t));
int (*rep_set_config) __P((DB_ENV *, u_int32_t, int));
int (*rep_set_limit) __P((DB_ENV *, u_int32_t, u_int32_t));
int (*rep_set_nsites) __P((DB_ENV *, u_int32_t));
int (*rep_set_priority) __P((DB_ENV *, u_int32_t));
int (*rep_set_request) __P((DB_ENV *, u_int32_t, u_int32_t));
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_channel) __P((DB_ENV *, int, DB_CHANNEL **, u_int32_t));
int (*repmgr_get_ack_policy) __P((DB_ENV *, int *));
int (*repmgr_local_site) __P((DB_ENV *, DB_SITE **));
int (*repmgr_msg_dispatch) __P((DB_ENV *,
void (*)(DB_ENV *, DB_CHANNEL *, DBT *, u_int32_t, u_int32_t),
u_int32_t));
int (*repmgr_set_ack_policy) __P((DB_ENV *, int));
int (*repmgr_site)
__P((DB_ENV *, const char *, u_int, DB_SITE**, u_int32_t));
int (*repmgr_site_by_eid) __P((DB_ENV *, int, DB_SITE**));
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_cache_max) __P((DB_ENV *, u_int32_t, u_int32_t));
int (*set_cachesize) __P((DB_ENV *, u_int32_t, u_int32_t, int));
int (*set_create_dir) __P((DB_ENV *, const char *));
int (*set_data_dir) __P((DB_ENV *, const char *));
int (*set_data_len) __P((DB_ENV *, u_int32_t));
int (*set_backup_callbacks) __P((DB_ENV *,
int (*)(DB_ENV *, const char *, const char *, void **),
int (*)(DB_ENV *, u_int32_t,
u_int32_t, u_int32_t, u_int8_t *, void *),
int (*)(DB_ENV *, const char *, void *)));
int (*set_backup_config) __P((DB_ENV *, DB_BACKUP_CONFIG, u_int32_t));
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_mode) __P((DB_ENV *, const char *));
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_lk_partitions) __P((DB_ENV *, u_int32_t));
int (*set_lk_priority) __P((DB_ENV *, u_int32_t, u_int32_t));
int (*set_lk_tablesize) __P((DB_ENV *, u_int32_t));
int (*set_memory_init) __P((DB_ENV *, DB_MEM_CONFIG, u_int32_t));
int (*set_memory_max) __P((DB_ENV *, u_int32_t, u_int32_t));
int (*set_metadata_dir) __P((DB_ENV *, const char *));
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));
int (*set_mp_mtxcount) __P((DB_ENV *, u_int32_t));
int (*set_mp_pagesize) __P((DB_ENV *, u_int32_t));
int (*set_mp_tablesize) __P((DB_ENV *, u_int32_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_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 (*txn_applied) __P((DB_ENV *,
DB_TXN_TOKEN *, db_timeout_t, u_int32_t));
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, int));
/* DB_ENV PRIVATE HANDLE LIST END */
};
/*
* Dispatch structure for recovery, log verification and print routines. Since
* internal and external routines take different arguments (ENV versus DB_ENV),
* we need something more elaborate than a single pointer and size.
*/
struct __db_distab {
int (**int_dispatch) __P((ENV *, DBT *, DB_LSN *, db_recops, void *));
size_t int_size;
int (**ext_dispatch) __P((DB_ENV *, DBT *, DB_LSN *, db_recops));
size_t ext_size;
};
/*
* Log verification configuration structure.
*/
struct __db_logvrfy_config {
int continue_after_fail, verbose;
u_int32_t cachesize;
const char *temp_envhome;
const char *dbfile, *dbname;
DB_LSN start_lsn, end_lsn;
time_t start_time, end_time;
};
struct __db_channel {
CHANNEL *channel; /* Pointer to internal state details. */
int eid; /* Env. ID passed in constructor. */
db_timeout_t timeout;
/* DB_CHANNEL PUBLIC HANDLE LIST BEGIN */
int (*close) __P((DB_CHANNEL *, u_int32_t));
int (*send_msg) __P((DB_CHANNEL *, DBT *, u_int32_t, u_int32_t));
int (*send_request) __P((DB_CHANNEL *,
DBT *, u_int32_t, DBT *, db_timeout_t, u_int32_t));
int (*set_timeout) __P((DB_CHANNEL *, db_timeout_t));
/* DB_CHANNEL PUBLIC HANDLE LIST END */
};
struct __db_site {
ENV *env;
int eid;
const char *host;
u_int port;
u_int32_t flags;
/* DB_SITE PUBLIC HANDLE LIST BEGIN */
int (*get_address) __P((DB_SITE *, const char **, u_int *));
int (*get_config) __P((DB_SITE *, u_int32_t, u_int32_t *));
int (*get_eid) __P((DB_SITE *, int *));
int (*set_config) __P((DB_SITE *, u_int32_t, u_int32_t));
int (*remove) __P((DB_SITE *));
int (*close) __P((DB_SITE *));
/* DB_SITE PUBLIC HANDLE LIST END */
};
#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(a)
#define dbm_close(a) __db_ndbm_close(a)
#define dbm_delete(a, b) __db_ndbm_delete(a, b)
#define dbm_dirfno(a) __db_ndbm_dirfno(a)
#define dbm_error(a) __db_ndbm_error(a)
#define dbm_fetch(a, b) __db_ndbm_fetch(a, b)
#define dbm_firstkey(a) __db_ndbm_firstkey(a)
#define dbm_nextkey(a) __db_ndbm_nextkey(a)
#define dbm_open(a, b, c) __db_ndbm_open(a, b, c)
#define dbm_pagfno(a) __db_ndbm_pagfno(a)
#define dbm_rdonly(a) __db_ndbm_rdonly(a)
#define dbm_store(a, b, c, d) \
__db_ndbm_store(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(a)
#define dbmclose __db_dbm_close
#if !defined(__cplusplus)
#define delete(a) __db_dbm_delete(a)
#endif
#define fetch(a) __db_dbm_fetch(a)
#define firstkey __db_dbm_firstkey
#define nextkey(a) __db_dbm_nextkey(a)
#define store(a, b) __db_dbm_store(a, b)
/*******************************************************
* Hsearch historic interface.
*******************************************************/
typedef enum {
FIND, ENTER
} ACTION;
typedef struct entry {
char *key;
char *data;
} ENTRY;
#define hcreate(a) __db_hcreate(a)
#define hdestroy __db_hdestroy
#define hsearch(a, b) __db_hsearch(a, b)
#endif /* DB_DBM_HSEARCH */
#if defined(__cplusplus)
}
#endif
#endif /* !_DB_H_ */
/* DO NOT EDIT: automatically built by dist/s_apiflags. */
#define DB_AGGRESSIVE 0x00000001
#define DB_ARCH_ABS 0x00000001
#define DB_ARCH_DATA 0x00000002
#define DB_ARCH_LOG 0x00000004
#define DB_ARCH_REMOVE 0x00000008
#define DB_AUTO_COMMIT 0x00000100
#define DB_BACKUP_CLEAN 0x00000002
#define DB_BACKUP_FILES 0x00000008
#define DB_BACKUP_NO_LOGS 0x00000010
#define DB_BACKUP_SINGLE_DIR 0x00000020
#define DB_BACKUP_UPDATE 0x00000040
#define DB_BOOTSTRAP_HELPER 0x00000001
#define DB_CDB_ALLDB 0x00000040
#define DB_CHKSUM 0x00000008
#define DB_CKP_INTERNAL 0x00000002
#define DB_CREATE 0x00000001
#define DB_CURSOR_BULK 0x00000001
#define DB_CURSOR_TRANSIENT 0x00000008
#define DB_CXX_NO_EXCEPTIONS 0x00000002
#define DB_DATABASE_LOCKING 0x00000080
#define DB_DIRECT 0x00000020
#define DB_DIRECT_DB 0x00000200
#define DB_DSYNC_DB 0x00000400
#define DB_DUP 0x00000010
#define DB_DUPSORT 0x00000002
#define DB_DURABLE_UNKNOWN 0x00000040
#define DB_ENCRYPT 0x00000001
#define DB_ENCRYPT_AES 0x00000001
#define DB_EXCL 0x00000004
#define DB_EXTENT 0x00000100
#define DB_FAILCHK 0x00000010
#define DB_FAILCHK_ISALIVE 0x00000040
#define DB_FAST_STAT 0x00000001
#define DB_FCNTL_LOCKING 0x00000800
#define DB_FLUSH 0x00000002
#define DB_FORCE 0x00000001
#define DB_FORCESYNC 0x00000001
#define DB_FOREIGN_ABORT 0x00000001
#define DB_FOREIGN_CASCADE 0x00000002
#define DB_FOREIGN_NULLIFY 0x00000004
#define DB_FREELIST_ONLY 0x00000001
#define DB_FREE_SPACE 0x00000002
#define DB_GROUP_CREATOR 0x00000002
#define DB_HOTBACKUP_IN_PROGRESS 0x00000800
#define DB_IGNORE_LEASE 0x00001000
#define DB_IMMUTABLE_KEY 0x00000002
#define DB_INIT_CDB 0x00000080
#define DB_INIT_LOCK 0x00000100
#define DB_INIT_LOG 0x00000200
#define DB_INIT_MPOOL 0x00000400
#define DB_INIT_MUTEX 0x00000800
#define DB_INIT_REP 0x00001000
#define DB_INIT_TXN 0x00002000
#define DB_INORDER 0x00000020
#define DB_INTERNAL_PERSISTENT_DB 0x00001000
#define DB_INTERNAL_TEMPORARY_DB 0x00002000
#define DB_JOIN_NOSORT 0x00000001
#define DB_LEGACY 0x00000004
#define DB_LOCAL_SITE 0x00000008
#define DB_LOCKDOWN 0x00004000
#define DB_LOCK_CHECK 0x00000001
#define DB_LOCK_IGNORE_REC 0x00000002
#define DB_LOCK_NOWAIT 0x00000004
#define DB_LOCK_RECORD 0x00000008
#define DB_LOCK_SET_TIMEOUT 0x00000010
#define DB_LOCK_SWITCH 0x00000020
#define DB_LOCK_UPGRADE 0x00000040
#define DB_LOG_AUTO_REMOVE 0x00000001
#define DB_LOG_CHKPNT 0x00000001
#define DB_LOG_COMMIT 0x00000004
#define DB_LOG_DIRECT 0x00000002
#define DB_LOG_DSYNC 0x00000004
#define DB_LOG_IN_MEMORY 0x00000008
#define DB_LOG_NOCOPY 0x00000008
#define DB_LOG_NOT_DURABLE 0x00000010
#define DB_LOG_NO_DATA 0x00000002
#define DB_LOG_VERIFY_CAF 0x00000001
#define DB_LOG_VERIFY_DBFILE 0x00000002
#define DB_LOG_VERIFY_ERR 0x00000004
#define DB_LOG_VERIFY_FORWARD 0x00000008
#define DB_LOG_VERIFY_INTERR 0x00000010
#define DB_LOG_VERIFY_PARTIAL 0x00000020
#define DB_LOG_VERIFY_VERBOSE 0x00000040
#define DB_LOG_VERIFY_WARNING 0x00000080
#define DB_LOG_WRNOSYNC 0x00000020
#define DB_LOG_ZERO 0x00000010
#define DB_MPOOL_CREATE 0x00000001
#define DB_MPOOL_DIRTY 0x00000002
#define DB_MPOOL_DISCARD 0x00000001
#define DB_MPOOL_EDIT 0x00000004
#define DB_MPOOL_FREE 0x00000008
#define DB_MPOOL_LAST 0x00000010
#define DB_MPOOL_NEW 0x00000020
#define DB_MPOOL_NOFILE 0x00000001
#define DB_MPOOL_NOLOCK 0x00000004
#define DB_MPOOL_TRY 0x00000040
#define DB_MPOOL_UNLINK 0x00000002
#define DB_MULTIPLE 0x00000800
#define DB_MULTIPLE_KEY 0x00004000
#define DB_MULTIVERSION 0x00000008
#define DB_MUTEX_ALLOCATED 0x00000001
#define DB_MUTEX_LOCKED 0x00000002
#define DB_MUTEX_LOGICAL_LOCK 0x00000004
#define DB_MUTEX_PROCESS_ONLY 0x00000008
#define DB_MUTEX_SELF_BLOCK 0x00000010
#define DB_MUTEX_SHARED 0x00000020
#define DB_NOERROR 0x00004000
#define DB_NOFLUSH 0x00001000
#define DB_NOLOCKING 0x00002000
#define DB_NOMMAP 0x00000010
#define DB_NOORDERCHK 0x00000002
#define DB_NOPANIC 0x00004000
#define DB_NOSYNC 0x00000001
#define DB_NO_AUTO_COMMIT 0x00008000
#define DB_NO_CHECKPOINT 0x00008000
#define DB_ODDFILESIZE 0x00000080
#define DB_ORDERCHKONLY 0x00000004
#define DB_OVERWRITE 0x00008000
#define DB_PANIC_ENVIRONMENT 0x00010000
#define DB_PRINTABLE 0x00000008
#define DB_PRIVATE 0x00010000
#define DB_PR_PAGE 0x00000010
#define DB_PR_RECOVERYTEST 0x00000020
#define DB_RDONLY 0x00000400
#define DB_RDWRMASTER 0x00010000
#define DB_READ_COMMITTED 0x00000400
#define DB_READ_UNCOMMITTED 0x00000200
#define DB_RECNUM 0x00000040
#define DB_RECOVER 0x00000002
#define DB_RECOVER_FATAL 0x00020000
#define DB_REGION_INIT 0x00020000
#define DB_REGISTER 0x00040000
#define DB_RENUMBER 0x00000080
#define DB_REPMGR_CONF_2SITE_STRICT 0x00000001
#define DB_REPMGR_CONF_ELECTIONS 0x00000002
#define DB_REPMGR_NEED_RESPONSE 0x00000001
#define DB_REPMGR_PEER 0x00000010
#define DB_REP_ANYWHERE 0x00000001
#define DB_REP_CLIENT 0x00000001
#define DB_REP_CONF_AUTOINIT 0x00000004
#define DB_REP_CONF_AUTOROLLBACK 0x00000008
#define DB_REP_CONF_BULK 0x00000010
#define DB_REP_CONF_DELAYCLIENT 0x00000020
#define DB_REP_CONF_INMEM 0x00000040
#define DB_REP_CONF_LEASE 0x00000080
#define DB_REP_CONF_NOWAIT 0x00000100
#define DB_REP_ELECTION 0x00000004
#define DB_REP_MASTER 0x00000002
#define DB_REP_NOBUFFER 0x00000002
#define DB_REP_PERMANENT 0x00000004
#define DB_REP_REREQUEST 0x00000008
#define DB_REVSPLITOFF 0x00000100
#define DB_RMW 0x00002000
#define DB_SALVAGE 0x00000040
#define DB_SA_SKIPFIRSTKEY 0x00000080
#define DB_SA_UNKNOWNKEY 0x00000100
#define DB_SEQ_DEC 0x00000001
#define DB_SEQ_INC 0x00000002
#define DB_SEQ_RANGE_SET 0x00000004
#define DB_SEQ_WRAP 0x00000008
#define DB_SEQ_WRAPPED 0x00000010
#define DB_SET_LOCK_TIMEOUT 0x00000001
#define DB_SET_REG_TIMEOUT 0x00000004
#define DB_SET_TXN_NOW 0x00000008
#define DB_SET_TXN_TIMEOUT 0x00000002
#define DB_SHALLOW_DUP 0x00000100
#define DB_SNAPSHOT 0x00000200
#define DB_STAT_ALL 0x00000004
#define DB_STAT_ALLOC 0x00000008
#define DB_STAT_CLEAR 0x00000001
#define DB_STAT_LOCK_CONF 0x00000010
#define DB_STAT_LOCK_LOCKERS 0x00000020
#define DB_STAT_LOCK_OBJECTS 0x00000040
#define DB_STAT_LOCK_PARAMS 0x00000080
#define DB_STAT_MEMP_HASH 0x00000010
#define DB_STAT_MEMP_NOERROR 0x00000020
#define DB_STAT_SUBSYSTEM 0x00000002
#define DB_STAT_SUMMARY 0x00000010
#define DB_ST_DUPOK 0x00000200
#define DB_ST_DUPSET 0x00000400
#define DB_ST_DUPSORT 0x00000800
#define DB_ST_IS_RECNO 0x00001000
#define DB_ST_OVFL_LEAF 0x00002000
#define DB_ST_RECNUM 0x00004000
#define DB_ST_RELEN 0x00008000
#define DB_ST_TOPLEVEL 0x00010000
#define DB_SYSTEM_MEM 0x00080000
#define DB_THREAD 0x00000020
#define DB_TIME_NOTGRANTED 0x00040000
#define DB_TRUNCATE 0x00020000
#define DB_TXN_BULK 0x00000010
#define DB_TXN_FAMILY 0x00000040
#define DB_TXN_NOSYNC 0x00000001
#define DB_TXN_NOT_DURABLE 0x00000004
#define DB_TXN_NOWAIT 0x00000002
#define DB_TXN_SNAPSHOT 0x00000004
#define DB_TXN_SYNC 0x00000008
#define DB_TXN_WAIT 0x00000080
#define DB_TXN_WRITE_NOSYNC 0x00000020
#define DB_UNREF 0x00020000
#define DB_UPGRADE 0x00000001
#define DB_USE_ENVIRON 0x00000004
#define DB_USE_ENVIRON_ROOT 0x00000008
#define DB_VERB_BACKUP 0x00000001
#define DB_VERB_DEADLOCK 0x00000002
#define DB_VERB_FILEOPS 0x00000004
#define DB_VERB_FILEOPS_ALL 0x00000008
#define DB_VERB_RECOVERY 0x00000010
#define DB_VERB_REGISTER 0x00000020
#define DB_VERB_REPLICATION 0x00000040
#define DB_VERB_REPMGR_CONNFAIL 0x00000080
#define DB_VERB_REPMGR_MISC 0x00000100
#define DB_VERB_REP_ELECT 0x00000200
#define DB_VERB_REP_LEASE 0x00000400
#define DB_VERB_REP_MISC 0x00000800
#define DB_VERB_REP_MSGS 0x00001000
#define DB_VERB_REP_SYNC 0x00002000
#define DB_VERB_REP_SYSTEM 0x00004000
#define DB_VERB_REP_TEST 0x00008000
#define DB_VERB_WAITSFOR 0x00010000
#define DB_VERIFY 0x00000002
#define DB_VERIFY_PARTITION 0x00040000
#define DB_WRITECURSOR 0x00000010
#define DB_WRITELOCK 0x00000020
#define DB_WRITEOPEN 0x00040000
#define DB_XA_CREATE 0x00000001
#define DB_YIELDCPU 0x00080000
/* DO NOT EDIT: automatically built by dist/s_include. */
#ifndef _DB_EXT_PROT_IN_
#define _DB_EXT_PROT_IN_
#if defined(__cplusplus)
extern "C" {
#endif
int db_copy __P((DB_ENV *, const char *, const char *, const char *));
int db_create __P((DB **, DB_ENV *, u_int32_t));
char *db_strerror __P((int));
int db_env_set_func_assert __P((void (*)(const char *, const char *, int)));
int db_env_set_func_close __P((int (*)(int)));
int db_env_set_func_dirfree __P((void (*)(char **, int)));
int db_env_set_func_dirlist __P((int (*)(const char *, char ***, int *)));
int db_env_set_func_exists __P((int (*)(const char *, int *)));
int db_env_set_func_free __P((void (*)(void *)));
int db_env_set_func_fsync __P((int (*)(int)));
int db_env_set_func_ftruncate __P((int (*)(int, off_t)));
int db_env_set_func_ioinfo __P((int (*)(const char *, int, u_int32_t *, u_int32_t *, u_int32_t *)));
int db_env_set_func_malloc __P((void *(*)(size_t)));
int db_env_set_func_file_map __P((int (*)(DB_ENV *, char *, size_t, int, void **), int (*)(DB_ENV *, void *)));
int db_env_set_func_region_map __P((int (*)(DB_ENV *, char *, size_t, int *, void **), int (*)(DB_ENV *, void *)));
int db_env_set_func_pread __P((ssize_t (*)(int, void *, size_t, off_t)));
int db_env_set_func_pwrite __P((ssize_t (*)(int, const void *, size_t, off_t)));
int db_env_set_func_open __P((int (*)(const char *, int, ...)));
int db_env_set_func_read __P((ssize_t (*)(int, void *, size_t)));
int db_env_set_func_realloc __P((void *(*)(void *, size_t)));
int db_env_set_func_rename __P((int (*)(const char *, const char *)));
int db_env_set_func_seek __P((int (*)(int, off_t, int)));
int db_env_set_func_unlink __P((int (*)(const char *)));
int db_env_set_func_write __P((ssize_t (*)(int, const void *, size_t)));
int db_env_set_func_yield __P((int (*)(u_long, u_long)));
int db_env_create __P((DB_ENV **, u_int32_t));
char *db_version __P((int *, int *, int *));
char *db_full_version __P((int *, int *, int *, int *, int *));
int log_compare __P((const DB_LSN *, const DB_LSN *));
#if defined(DB_WIN32) && !defined(DB_WINCE)
int db_env_set_win_security __P((SECURITY_ATTRIBUTES *sa));
#endif
int db_sequence_create __P((DB_SEQUENCE **, DB *, u_int32_t));
#if DB_DBM_HSEARCH != 0
int __db_ndbm_clearerr __P((DBM *));
void __db_ndbm_close __P((DBM *));
int __db_ndbm_delete __P((DBM *, datum));
int __db_ndbm_dirfno __P((DBM *));
int __db_ndbm_error __P((DBM *));
datum __db_ndbm_fetch __P((DBM *, datum));
datum __db_ndbm_firstkey __P((DBM *));
datum __db_ndbm_nextkey __P((DBM *));
DBM *__db_ndbm_open __P((const char *, int, int));
int __db_ndbm_pagfno __P((DBM *));
int __db_ndbm_rdonly __P((DBM *));
int __db_ndbm_store __P((DBM *, datum, datum, int));
int __db_dbm_close __P((void));
int __db_dbm_delete __P((datum));
datum __db_dbm_fetch __P((datum));
datum __db_dbm_firstkey __P((void));
int __db_dbm_init __P((char *));
datum __db_dbm_nextkey __P((datum));
int __db_dbm_store __P((datum, datum));
#endif
#if DB_DBM_HSEARCH != 0
int __db_hcreate __P((size_t));
ENTRY *__db_hsearch __P((ENTRY, ACTION));
void __db_hdestroy __P((void));
#endif
#if defined(__cplusplus)
}
#endif
#endif /* !_DB_EXT_PROT_IN_ */