Import BSDDB 4.7.25 (as of svn r89086)

txn/txn_method.c

@@ -0,0 +1,124 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1996,2008 Oracle.  All rights reserved.
+ *
+ * $Id: txn_method.c 63573 2008-05-23 21:43:21Z trent.nelson $
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+#include "dbinc/txn.h"
+
+/*
+ * __txn_env_create --
+ *	Transaction specific initialization of the DB_ENV structure.
+ *
+ * PUBLIC: int __txn_env_create __P((DB_ENV *));
+ */
+int
+__txn_env_create(dbenv)
+	DB_ENV *dbenv;
+{
+	/*
+	 * !!!
+	 * Our caller has not yet had the opportunity to reset the panic
+	 * state or turn off mutex locking, and so we can neither check
+	 * the panic state or acquire a mutex in the DB_ENV create path.
+	 */
+	dbenv->tx_max = DEF_MAX_TXNS;
+
+	return (0);
+}
+
+/*
+ * __txn_env_destroy --
+ *	Transaction specific destruction of the DB_ENV structure.
+ *
+ * PUBLIC: void __txn_env_destroy __P((DB_ENV *));
+ */
+void
+__txn_env_destroy(dbenv)
+	DB_ENV *dbenv;
+{
+	COMPQUIET(dbenv, NULL);
+}
+
+/*
+ * PUBLIC: int __txn_get_tx_max __P((DB_ENV *, u_int32_t *));
+ */
+int
+__txn_get_tx_max(dbenv, tx_maxp)
+	DB_ENV *dbenv;
+	u_int32_t *tx_maxp;
+{
+	ENV *env;
+
+	env = dbenv->env;
+
+	ENV_NOT_CONFIGURED(env,
+	    env->tx_handle, "DB_ENV->get_tx_max", DB_INIT_TXN);
+
+	if (TXN_ON(env)) {
+		/* Cannot be set after open, no lock required to read. */
+		*tx_maxp = ((DB_TXNREGION *)
+		    env->tx_handle->reginfo.primary)->maxtxns;
+	} else
+		*tx_maxp = dbenv->tx_max;
+	return (0);
+}
+
+/*
+ * __txn_set_tx_max --
+ *	DB_ENV->set_tx_max.
+ *
+ * PUBLIC: int __txn_set_tx_max __P((DB_ENV *, u_int32_t));
+ */
+int
+__txn_set_tx_max(dbenv, tx_max)
+	DB_ENV *dbenv;
+	u_int32_t tx_max;
+{
+	ENV *env;
+
+	env = dbenv->env;
+
+	ENV_ILLEGAL_AFTER_OPEN(env, "DB_ENV->set_tx_max");
+
+	dbenv->tx_max = tx_max;
+	return (0);
+}
+
+/*
+ * PUBLIC: int __txn_get_tx_timestamp __P((DB_ENV *, time_t *));
+ */
+int
+__txn_get_tx_timestamp(dbenv, timestamp)
+	DB_ENV *dbenv;
+	time_t *timestamp;
+{
+	*timestamp = dbenv->tx_timestamp;
+	return (0);
+}
+
+/*
+ * __txn_set_tx_timestamp --
+ *	Set the transaction recovery timestamp.
+ *
+ * PUBLIC: int __txn_set_tx_timestamp __P((DB_ENV *, time_t *));
+ */
+int
+__txn_set_tx_timestamp(dbenv, timestamp)
+	DB_ENV *dbenv;
+	time_t *timestamp;
+{
+	ENV *env;
+
+	env = dbenv->env;
+
+	ENV_ILLEGAL_AFTER_OPEN(env, "DB_ENV->set_tx_timestamp");
+
+	dbenv->tx_timestamp = *timestamp;
+	return (0);
+}