libdb-sys 0.1.1

statically linked ffi bindings for Berkeley DB
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1996, 2012 Oracle and/or its affiliates.  All rights reserved.
 *
 * $Id$
 */

#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 = 0;

	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);
}