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authorUlrich Drepper <drepper@redhat.com>2000-01-02 06:01:06 +0000
committerUlrich Drepper <drepper@redhat.com>2000-01-02 06:01:06 +0000
commit8d6f1731fcd082e4f744ba9cb4bde4be7c08f1b3 (patch)
tree099a250d7366aef2ab028fdb24f0d692cd784b4a /db2/include/txn.h
parent9a6450d578556c11e7c173d2f28362345b8f1258 (diff)
Update.
* Makeconfig (all-subdirs): Remove db and db2. * db/*: Removed. * db2/*: Removed.
Diffstat (limited to 'db2/include/txn.h')
-rw-r--r--db2/include/txn.h148
1 files changed, 0 insertions, 148 deletions
diff --git a/db2/include/txn.h b/db2/include/txn.h
deleted file mode 100644
index a6fa4db8de..0000000000
--- a/db2/include/txn.h
+++ /dev/null
@@ -1,148 +0,0 @@
-/*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1996, 1997, 1998
- * Sleepycat Software. All rights reserved.
- *
- * @(#)txn.h 10.18 (Sleepycat) 1/3/99
- */
-#ifndef _TXN_H_
-#define _TXN_H_
-
-#include "xa.h"
-
-/*
- * The name of the transaction shared memory region is DEFAULT_TXN_FILE and
- * the region is always created group RW of the group owning the directory.
- */
-#define DEFAULT_TXN_FILE "__db_txn.share"
-/* TXN_MINIMUM = (DB_LOCK_MAXID + 1) but this makes compilers complain. */
-#define TXN_MINIMUM 0x80000000
-#define TXN_INVALID 0xffffffff /* Maximum number of txn ids. */
-
-/*
- * Transaction type declarations.
- */
-
-/*
- * Internal data maintained in shared memory for each transaction.
- */
-typedef char DB_XID[XIDDATASIZE];
-
-typedef struct __txn_detail {
- u_int32_t txnid; /* current transaction id
- used to link free list also */
- DB_LSN last_lsn; /* last lsn written for this txn */
- DB_LSN begin_lsn; /* lsn of begin record */
- size_t last_lock; /* offset in lock region of last lock
- for this transaction. */
- size_t parent; /* Offset of transaction's parent. */
-#define TXN_UNALLOC 0
-#define TXN_RUNNING 1
-#define TXN_ABORTED 2
-#define TXN_PREPARED 3
-#define TXN_COMMITTED 4
- u_int32_t status; /* status of the transaction */
- SH_TAILQ_ENTRY links; /* free/active list */
-
-#define TXN_XA_ABORTED 1
-#define TXN_XA_DEADLOCKED 2
-#define TXN_XA_ENDED 3
-#define TXN_XA_PREPARED 4
-#define TXN_XA_STARTED 5
-#define TXN_XA_SUSPENDED 6
- u_int32_t xa_status; /* XA status */
-
- /*
- * XID (xid_t) structure: because these fields are logged, the
- * sizes have to be explicit.
- */
- DB_XID xid; /* XA global transaction id */
- u_int32_t bqual; /* bqual_length from XID */
- u_int32_t gtrid; /* gtrid_length from XID */
- int32_t format; /* XA format */
-} TXN_DETAIL;
-
-/*
- * The transaction manager encapsulates the transaction system. It contains
- * references to the log and lock managers as well as the state that keeps
- * track of the shared memory region.
- */
-struct __db_txnmgr {
-/* These fields need to be protected for multi-threaded support. */
- db_mutex_t *mutexp; /* Synchronization. */
- /* list of active transactions */
- TAILQ_HEAD(_chain, __db_txn) txn_chain;
-
-/* These fields are not protected. */
- REGINFO reginfo; /* Region information. */
- DB_ENV *dbenv; /* Environment. */
- int (*recover) /* Recovery dispatch routine */
- __P((DB_LOG *, DBT *, DB_LSN *, int, void *));
- u_int32_t flags; /* DB_TXN_NOSYNC, DB_THREAD */
- DB_TXNREGION *region; /* address of shared memory region */
- void *mem; /* address of the shalloc space */
-};
-
-/*
- * Layout of the shared memory region.
- * The region consists of a DB_TXNREGION structure followed by a large
- * pool of shalloc'd memory which is used to hold TXN_DETAIL structures
- * and thread mutexes (which are dynamically allocated).
- */
-struct __db_txnregion {
- RLAYOUT hdr; /* Shared memory region header. */
- u_int32_t magic; /* transaction magic number */
- u_int32_t version; /* version number */
- u_int32_t maxtxns; /* maximum number of active txns */
- u_int32_t last_txnid; /* last transaction id given out */
- DB_LSN pending_ckp; /* last checkpoint did not finish */
- DB_LSN last_ckp; /* lsn of the last checkpoint */
- time_t time_ckp; /* time of last checkpoint */
- u_int32_t logtype; /* type of logging */
- u_int32_t locktype; /* lock type */
- u_int32_t naborts; /* number of aborted transactions */
- u_int32_t ncommits; /* number of committed transactions */
- u_int32_t nbegins; /* number of begun transactions */
- SH_TAILQ_HEAD(_active) active_txn; /* active transaction list */
-};
-
-/*
- * Make the region large enough to hold N transaction detail structures
- * plus some space to hold thread handles and the beginning of the shalloc
- * region.
- */
-#define TXN_REGION_SIZE(N) \
- (sizeof(DB_TXNREGION) + N * sizeof(TXN_DETAIL) + 1000)
-
-/* Macros to lock/unlock the region and threads. */
-#define LOCK_TXNTHREAD(tmgrp) \
- if (F_ISSET(tmgrp, DB_THREAD)) \
- (void)__db_mutex_lock((tmgrp)->mutexp, -1)
-#define UNLOCK_TXNTHREAD(tmgrp) \
- if (F_ISSET(tmgrp, DB_THREAD)) \
- (void)__db_mutex_unlock((tmgrp)->mutexp, -1)
-
-#define LOCK_TXNREGION(tmgrp) \
- (void)__db_mutex_lock(&(tmgrp)->region->hdr.lock, (tmgrp)->reginfo.fd)
-#define UNLOCK_TXNREGION(tmgrp) \
- (void)__db_mutex_unlock(&(tmgrp)->region->hdr.lock, (tmgrp)->reginfo.fd)
-
-/* Check for region catastrophic shutdown. */
-#define TXN_PANIC_CHECK(tmgrp) { \
- if ((tmgrp)->region->hdr.panic) \
- return (DB_RUNRECOVERY); \
-}
-
-/*
- * Log record types.
- */
-#define TXN_COMMIT 1
-#define TXN_PREPARE 2
-#define TXN_CHECKPOINT 3
-
-#include "txn_auto.h"
-#include "txn_ext.h"
-
-#include "xa_ext.h"
-#endif /* !_TXN_H_ */