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Berkeley DB: DB_TXN
DB_TXN
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#include <db.h>
typedef struct __db_txn DB_TXN;
Description: DB_TXN
The DB_TXN object is the handle for a transaction. Methods off
the DB_TXN handle are used to configure, abort and commit the
transaction. DB_TXN handles are provided to DB methods
in order to transactionally protect those database operations.
DB_TXN handles are not free-threaded; transactions handles may
be used by multiple threads, but only serially, that is, the application
must serialize access to the DB_TXN handle. Once the
DB_TXN->abort or DB_TXN->commit methods are called, the handle may
not be accessed again, regardless of the method's return. In addition,
parent transactions may not issue any Berkeley DB operations while they have
active child transactions (child transactions that have not yet been
committed or aborted) except for DB_ENV->txn_begin, DB_TXN->abort
and DB_TXN->commit.
Class
DB_ENV, DB_TXN
See Also
Transaction Subsystem and Related Methods
Copyright (c) 1996-2004 Sleepycat Software, Inc. - All rights reserved.
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