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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2002
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: java_Dbc.c,v 11.23 2002/08/06 05:19:06 bostic Exp $";
#endif /* not lint */
#include <jni.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#ifdef DIAGNOSTIC
#include <stdio.h>
#endif
#include "db_int.h"
#include "java_util.h"
#include "com_sleepycat_db_Dbc.h"
JNIEXPORT void JNICALL Java_com_sleepycat_db_Dbc_close
(JNIEnv *jnienv, jobject jthis)
{
int err;
DBC *dbc = get_DBC(jnienv, jthis);
if (!verify_non_null(jnienv, dbc))
return;
err = dbc->c_close(dbc);
if (verify_return(jnienv, err, 0)) {
set_private_dbobj(jnienv, name_DBC, jthis, 0);
}
}
JNIEXPORT jint JNICALL Java_com_sleepycat_db_Dbc_count
(JNIEnv *jnienv, jobject jthis, jint flags)
{
int err;
DBC *dbc = get_DBC(jnienv, jthis);
db_recno_t count;
if (!verify_non_null(jnienv, dbc))
return (0);
err = dbc->c_count(dbc, &count, flags);
verify_return(jnienv, err, 0);
return (count);
}
JAVADB_METHOD_INT(Dbc_del, (JAVADB_ARGS, jint flags), DBC,
c_del, (c_this, flags), DB_RETOK_DBCDEL)
JNIEXPORT jobject JNICALL Java_com_sleepycat_db_Dbc_dup
(JNIEnv *jnienv, jobject jthis, jint flags)
{
int err;
DBC *dbc = get_DBC(jnienv, jthis);
DBC *dbc_ret = NULL;
if (!verify_non_null(jnienv, dbc))
return (0);
err = dbc->c_dup(dbc, &dbc_ret, flags);
if (!verify_return(jnienv, err, 0))
return (0);
return (get_Dbc(jnienv, dbc_ret));
}
JNIEXPORT jint JNICALL Java_com_sleepycat_db_Dbc_get
(JNIEnv *jnienv, jobject jthis,
/*Dbt*/ jobject key, /*Dbt*/ jobject data, jint flags)
{
int err, retry, op_flags;
DBC *dbc;
DB_ENV *dbenv;
LOCKED_DBT lkey, ldata;
OpKind keyop, dataop;
/*
* Depending on flags, the user may be supplying the key,
* or else we may have to retrieve it.
*/
err = 0;
keyop = outOp;
dataop = outOp;
op_flags = flags & DB_OPFLAGS_MASK;
if (op_flags == DB_SET) {
keyop = inOp;
}
else if (op_flags == DB_SET_RANGE ||
op_flags == DB_SET_RECNO) {
keyop = inOutOp;
}
else if (op_flags == DB_GET_BOTH || op_flags == DB_GET_BOTH_RANGE) {
keyop = inOutOp;
dataop = inOutOp;
}
dbc = get_DBC(jnienv, jthis);
if (!verify_non_null(jnienv, dbc))
return (0);
dbenv = dbc->dbp->dbenv;
if (locked_dbt_get(&lkey, jnienv, dbenv, key, keyop) != 0)
goto out2;
if (locked_dbt_get(&ldata, jnienv, dbenv, data, dataop) != 0)
goto out1;
if (!verify_non_null(jnienv, dbc))
goto out1;
for (retry = 0; retry < 3; retry++) {
err = dbc->c_get(dbc,
&lkey.javainfo->dbt, &ldata.javainfo->dbt, flags);
/*
* If we failed due to lack of memory in our DBT arrays,
* retry.
*/
if (err != ENOMEM)
break;
if (!locked_dbt_realloc(&lkey, jnienv,
dbenv) && !locked_dbt_realloc(&ldata, jnienv, dbenv))
break;
}
out1:
locked_dbt_put(&ldata, jnienv, dbenv);
out2:
locked_dbt_put(&lkey, jnienv, dbenv);
if (!DB_RETOK_DBCGET(err)) {
if (verify_dbt(jnienv, err, &lkey) &&
verify_dbt(jnienv, err, &ldata))
verify_return(jnienv, err, 0);
}
return (err);
}
JNIEXPORT jint JNICALL Java_com_sleepycat_db_Dbc_pget
(JNIEnv *jnienv, jobject jthis,
/*Dbt*/ jobject key, /*Dbt*/ jobject pkey, /*Dbt*/ jobject data, jint flags)
{
int err, retry, op_flags;
DBC *dbc;
DB_ENV *dbenv;
LOCKED_DBT lkey, lpkey, ldata;
OpKind keyop, pkeyop, dataop;
/*
* Depending on flags, the user may be supplying the key,
* or else we may have to retrieve it.
*/
err = 0;
keyop = outOp;
pkeyop = outOp;
dataop = outOp;
op_flags = flags & DB_OPFLAGS_MASK;
if (op_flags == DB_SET) {
keyop = inOp;
}
else if (op_flags == DB_SET_RANGE ||
op_flags == DB_SET_RECNO) {
keyop = inOutOp;
}
else if (op_flags == DB_GET_BOTH || op_flags == DB_GET_BOTH_RANGE) {
pkeyop = inOutOp;
keyop = inOutOp;
dataop = inOutOp;
}
dbc = get_DBC(jnienv, jthis);
if (!verify_non_null(jnienv, dbc))
return (0);
dbenv = dbc->dbp->dbenv;
if (locked_dbt_get(&lkey, jnienv, dbenv, key, keyop) != 0)
goto out3;
if (locked_dbt_get(&lpkey, jnienv, dbenv, pkey, pkeyop) != 0)
goto out2;
if (locked_dbt_get(&ldata, jnienv, dbenv, data, dataop) != 0)
goto out1;
if (!verify_non_null(jnienv, dbc))
goto out1;
for (retry = 0; retry < 3; retry++) {
err = dbc->c_pget(dbc, &lkey.javainfo->dbt,
&lpkey.javainfo->dbt, &ldata.javainfo->dbt, flags);
/*
* If we failed due to lack of memory in our DBT arrays,
* retry.
*/
if (err != ENOMEM)
break;
if (!locked_dbt_realloc(&lkey, jnienv, dbenv) &&
!locked_dbt_realloc(&lpkey, jnienv, dbenv) &&
!locked_dbt_realloc(&ldata, jnienv, dbenv))
break;
}
out1:
locked_dbt_put(&ldata, jnienv, dbenv);
out2:
locked_dbt_put(&lpkey, jnienv, dbenv);
out3:
locked_dbt_put(&lkey, jnienv, dbenv);
if (!DB_RETOK_DBCGET(err)) {
if (verify_dbt(jnienv, err, &lkey) &&
verify_dbt(jnienv, err, &lpkey) &&
verify_dbt(jnienv, err, &ldata))
verify_return(jnienv, err, 0);
}
return (err);
}
JNIEXPORT jint JNICALL Java_com_sleepycat_db_Dbc_put
(JNIEnv *jnienv, jobject jthis,
/*Dbt*/ jobject key, /*Dbt*/ jobject data, jint flags)
{
int err;
DBC *dbc;
DB_ENV *dbenv;
LOCKED_DBT lkey, ldata;
OpKind keyop;
err = 0;
dbc = get_DBC(jnienv, jthis);
if (!verify_non_null(jnienv, dbc))
return (0);
dbenv = dbc->dbp->dbenv;
keyop = (dbc->dbp->type == DB_RECNO &&
(flags == DB_BEFORE || flags == DB_AFTER)) ? outOp : inOp;
if (locked_dbt_get(&lkey, jnienv, dbenv, key, keyop) != 0)
goto out2;
if (locked_dbt_get(&ldata, jnienv, dbenv, data, inOp) != 0)
goto out1;
if (!verify_non_null(jnienv, dbc))
goto out1;
err = dbc->c_put(dbc, &lkey.javainfo->dbt, &ldata.javainfo->dbt, flags);
if (!DB_RETOK_DBCPUT(err))
verify_return(jnienv, err, 0);
out1:
locked_dbt_put(&ldata, jnienv, dbenv);
out2:
locked_dbt_put(&lkey, jnienv, dbenv);
return (err);
}
JNIEXPORT void JNICALL Java_com_sleepycat_db_Dbc_finalize
(JNIEnv *jnienv, jobject jthis)
{
/*
* Free any data related to DBC here.
* If we ever have java-only data embedded in the DBC
* and need to do this, we'll have to track Dbc's
* according to which Db owns them, just as
* we track Db's according to which DbEnv owns them.
* That's necessary to avoid double freeing that
* comes about when closes interact with GC.
*/
#ifdef DIAGNOSTIC
DBC *dbc;
dbc = get_DBC(jnienv, jthis);
if (dbc != NULL)
fprintf(stderr, "Java API: Dbc has not been closed\n");
#else
COMPQUIET(jnienv, NULL);
COMPQUIET(jthis, NULL);
#endif
}
|
