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
|
/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997, 1998
* Sleepycat Software. All rights reserved.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)java_DbLockTab.cpp 10.6 (Sleepycat) 10/24/98";
#endif /* not lint */
#include <jni.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "db.h"
#include "java_util.h"
#include "com_sleepycat_db_DbLockTab.h"
JNIEXPORT void JNICALL Java_com_sleepycat_db_DbLockTab_close
(JNIEnv *jnienv, /*DbLocktab*/ jobject jthis)
{
int err;
DB_LOCKTAB *dblocktab = get_DB_LOCKTAB(jnienv, jthis);
if (!verify_non_null(jnienv, dblocktab))
return;
err = lock_close(dblocktab);
if (verify_return(jnienv, err))
{
set_private_info(jnienv, name_DB_LOCKTAB, jthis, 0);
}
}
JNIEXPORT void JNICALL Java_com_sleepycat_db_DbLockTab_detect
(JNIEnv *jnienv, jobject jthis, jint atype, jint flags)
{
int err;
DB_LOCKTAB *dblocktab = get_DB_LOCKTAB(jnienv, jthis);
if (!verify_non_null(jnienv, dblocktab))
return;
err = lock_detect(dblocktab, atype, flags);
verify_return(jnienv, err);
}
JNIEXPORT /*DbLock*/ jobject JNICALL Java_com_sleepycat_db_DbLockTab_get
(JNIEnv *jnienv, jobject jthis, /*u_int32_t*/ jint locker,
jint flags, /*const Dbt*/ jobject obj, /*db_lockmode_t*/ jint lock_mode)
{
int err;
DB_LOCKTAB *dblocktab = get_DB_LOCKTAB(jnienv, jthis);
DB_LOCK dblock;
LockedDBT dbobj(jnienv, obj, inOp);
if (dbobj.has_error())
return 0;
/*DbLock*/ jobject retval = NULL;
if (!verify_non_null(jnienv, dblocktab))
return retval;
err = lock_get(dblocktab, locker, flags, dbobj.dbt,
(db_lockmode_t)lock_mode, &dblock);
if (verify_return(jnienv, err)) {
retval = create_default_object(jnienv, name_DB_LOCK);
set_private_long_info(jnienv, name_DB_LOCK, retval, dblock);
}
return retval;
}
JNIEXPORT jint JNICALL Java_com_sleepycat_db_DbLockTab_id
(JNIEnv *jnienv, jobject jthis)
{
int err;
DB_LOCKTAB *dblocktab = get_DB_LOCKTAB(jnienv, jthis);
if (!verify_non_null(jnienv, dblocktab))
return -1;
u_int32_t id;
err = lock_id(dblocktab, &id);
verify_return(jnienv, err);
return id;
}
JNIEXPORT jobject JNICALL Java_com_sleepycat_db_DbLockTab_open
(JNIEnv *jnienv, jclass jthis_class, jstring dir, jint flags,
jint mode, /*DbEnv*/ jobject dbenv)
{
int err;
jobject retval = NULL;
DB_LOCKTAB *dblocktab;
DB_ENV *db_dbenv = get_DB_ENV(jnienv, dbenv);
LockedString dbdir(jnienv, dir);
if (verify_non_null(jnienv, db_dbenv)) {
err = lock_open(dbdir.string, flags, mode,
db_dbenv, &dblocktab);
if (verify_return(jnienv, err)) {
retval = create_default_object(jnienv, name_DB_LOCKTAB);
set_private_info(jnienv, name_DB_LOCKTAB, retval, dblocktab);
}
}
return retval;
}
JNIEXPORT jobject JNICALL Java_com_sleepycat_db_DbLockTab_stat
(JNIEnv *jnienv, jobject jthis)
{
int err;
DB_LOCKTAB *dblocktab = get_DB_LOCKTAB(jnienv, jthis);
DB_LOCK_STAT *statp = NULL;
jobject retval = NULL;
if (!verify_non_null(jnienv, dblocktab))
return NULL;
// We cannot use the default allocator (on Win* platforms anyway)
// because it often causes problems when we free storage
// in a DLL that was allocated in another DLL. Using
// our own allocator (ours just calls malloc!) ensures
// that there is no mismatch.
//
err = lock_stat(dblocktab, &statp, allocMemory);
if (verify_return(jnienv, err)) {
retval = create_default_object(jnienv, name_DB_LOCK_STAT);
jclass dbclass = get_class(jnienv, name_DB_LOCK_STAT);
// Set the individual fields
set_int_field(jnienv, dbclass, retval,
"st_magic", statp->st_magic);
set_int_field(jnienv, dbclass, retval,
"st_version", statp->st_version);
set_int_field(jnienv, dbclass, retval,
"st_maxlocks", statp->st_maxlocks);
set_int_field(jnienv, dbclass, retval,
"st_nmodes", statp->st_nmodes);
set_int_field(jnienv, dbclass, retval,
"st_numobjs", statp->st_numobjs);
set_int_field(jnienv, dbclass, retval,
"st_nlockers", statp->st_nlockers);
set_int_field(jnienv, dbclass, retval,
"st_nconflicts", statp->st_nconflicts);
set_int_field(jnienv, dbclass, retval,
"st_nrequests", statp->st_nrequests);
set_int_field(jnienv, dbclass, retval,
"st_nreleases", statp->st_nreleases);
set_int_field(jnienv, dbclass, retval,
"st_ndeadlocks", statp->st_ndeadlocks);
set_int_field(jnienv, dbclass, retval,
"st_region_wait", statp->st_region_wait);
set_int_field(jnienv, dbclass, retval,
"st_region_nowait", statp->st_region_nowait);
set_int_field(jnienv, dbclass, retval,
"st_refcnt", statp->st_refcnt);
set_int_field(jnienv, dbclass, retval,
"st_regsize", statp->st_regsize);
freeMemory(statp);
}
return retval;
}
JNIEXPORT void JNICALL Java_com_sleepycat_db_DbLockTab_unlink
(JNIEnv *jnienv, jclass jthis_class, jstring dir, jint force,
/*DbEnv*/ jobject dbenv)
{
int err;
DB_ENV *db_dbenv = get_DB_ENV(jnienv, dbenv);
LockedString dbdir(jnienv, dir);
if (verify_non_null(jnienv, db_dbenv)) {
err = lock_unlink(dbdir.string, force, db_dbenv);
verify_return(jnienv, err);
}
}
JNIEXPORT void JNICALL Java_com_sleepycat_db_DbLockTab_finalize
(JNIEnv *jnienv, jobject jthis)
{
DB_LOCKTAB *dblocktab = get_DB_LOCKTAB(jnienv, jthis);
if (dblocktab) {
// Free any data related to DB_LOCKTAB here.
// Unfortunately, we cannot really autoclose because
// finalize is not called in any particular order
}
}
|
