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
|
// $Id$
#include "PSDL_Datastore.h"
#include "PSDL_OctetSeq.h"
#include "PSDL_String.h"
#include "ace/SString.h"
#include "ace/OS_NS_unistd.h"
#include "tao/debug.h"
#include "tao/OctetSeqC.h"
#include "ace/Auto_Ptr.h"
ACE_RCSID (PSS, PSDL_Datastore, "$Id$")
TAO_PSDL_Datastore::TAO_PSDL_Datastore ()
: allocator_ (0),
obj_ref_map_ (0),
index_file_ ("Data_Store"),
base_address_ (ACE_DEFAULT_BASE_ADDR)
{
this->open (this->index_file_,
this->base_address_);
}
TAO_PSDL_Datastore::~TAO_PSDL_Datastore (void)
{
// delete allocator_;
// ACE_OS::free (const_cast<ACE_TCHAR *> (this->index_file_));
}
int
TAO_PSDL_Datastore::unbind (const char *name)
{
ACE_GUARD_RETURN (TAO_SYNCH_MUTEX, ace_mon, this->lock_, -1);
TAO_PSDL_String psdl_string (this->allocator_);
psdl_string = name;
if (this->obj_ref_map_->unbind (psdl_string, this->allocator_) != 0)
return -1;
return 0;
}
int
TAO_PSDL_Datastore::bind (const char *name,
const CORBA::OctetSeq &octet_seq)
{
int result = -1;
TAO_PSDL_OctetSeq psdl_octet_seq (this->allocator_);
psdl_octet_seq = octet_seq;
TAO_PSDL_String psdl_string (this->allocator_);
psdl_string = name;
ACE_GUARD_RETURN (TAO_SYNCH_MUTEX, ace_mon, this->lock_, -1);
// Do a normal bind. This will fail if there's already an
// entry with the same name
result = this->obj_ref_map_->bind (psdl_string,
psdl_octet_seq,
this->allocator_);
// if (result == 1): Entry already exists.
// if (result == -1): Bind failed.
// if (result == 0) success.
return result;
}
int
TAO_PSDL_Datastore::find (const char *name,
CORBA::OctetSeq &octet_seq)
{
TAO_PSDL_OctetSeq psdl_seq;
TAO_PSDL_String psdl_string (this->allocator_);
psdl_string = CORBA::string_dup (name);
int result = this->obj_ref_map_->find (psdl_string,
psdl_seq,
this->allocator_);
if (result == 0)
{
octet_seq.replace (psdl_seq.length_,
psdl_seq.length_,
psdl_seq.buffer_);
}
else
{
ACE_DEBUG ((LM_ERROR,
"Couldnt find the entry in the Database. stopping",
-1));
}
return result;
}
ACE_Allocator*
TAO_PSDL_Datastore::allocator (void)
{
return allocator_;
}
int
TAO_PSDL_Datastore::open (const ACE_TCHAR *file_name,
void *base_address)
{
this->base_address_ = base_address;
this->index_file_ = ACE_OS::strdup (file_name);
if (this->index_file_ == 0)
return -1;
return create_index ();
}
int
TAO_PSDL_Datastore::create_index (void)
{
// Make sure that the file name is of the legal length.
if (ACE_OS::strlen (this->index_file_) >= MAXNAMELEN + MAXPATHLEN)
{
errno = ENAMETOOLONG;
return -1;
}
#if !defined (CHORUS)
ACE_MMAP_Memory_Pool::OPTIONS options (this->base_address_);
#else
// Use base address == 0, don't use a fixed address.
ACE_MMAP_Memory_Pool::OPTIONS options (0,
0,
0,
ACE_CHORUS_LOCAL_NAME_SPACE_T_SIZE);
#endif /* CHORUS */
// Create the allocator with the appropriate options. The name used
// for the lock is the same as one used for the file.
ACE_NEW_RETURN (this->allocator_,
ALLOCATOR (this->index_file_,
this->index_file_,
&options),
-1);
#if !defined (ACE_LACKS_ACCESS)
// Now check if the backing store has been created successfully.
if (ACE_OS::access (this->index_file_, F_OK) != 0)
ACE_ERROR_RETURN ((LM_ERROR,
"create_index\n"),
-1);
#endif /* ACE_LACKS_ACCESS */
void *name_obj_map = 0;
// This is the easy case since if we find hash table in the
// memory-mapped file we know it's already initialized.
if (this->allocator_->find (TAO_PERSISTENT_NAME_OBJ_MAP, name_obj_map) == 0)
{
this->obj_ref_map_ = static_cast<NAME_OBJ_REF_MAP *> (name_obj_map);
}
else
{
// Create a new <name_obj_map_> (because we've just created a new
// memory-mapped file).
size_t index_size = sizeof (NAME_OBJ_REF_MAP);
name_obj_map = this->allocator_->malloc (index_size);
if (name_obj_map == 0
|| create_index_helper (name_obj_map) == -1
|| this->allocator_->bind (TAO_PERSISTENT_NAME_OBJ_MAP,
name_obj_map) == -1)
{
// Attempt to clean up.
ACE_ERROR ((LM_ERROR,
"create_index\n"));
this->allocator_->remove ();
return -1;
}
}
return 0;
}
int
TAO_PSDL_Datastore::create_index_helper (void *buffer)
{
this->obj_ref_map_ = new(buffer) NAME_OBJ_REF_MAP(this->allocator_) ;
return 0;
}
|
