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
|
#include "PersistStore.h"
#include "tao/Any_Unknown_IDL_Type.h"
#include "ace/OS_NS_fcntl.h"
#include "ace/OS_NS_sys_time.h"
#include "orbsvcs/orbsvcs/Time_Utilities.h"
#include "ace/OS_NS_fcntl.h"
#include "ace/OS_NS_sys_time.h"
ACE_RCSID (Log,
PersistStore,
"$Id$")
TAO_PersistStore::TAO_PersistStore (CORBA::ULongLong max_size,
CORBA::ULong max_rec_list_len)
: maxid_ (0),
max_size_ (max_size),
current_size_ (0),
num_records_ (0),
max_rec_list_len_ (max_rec_list_len)
{
// No-Op.
}
TAO_PersistStore::~TAO_PersistStore (void)
{
// No-Op.
}
int
TAO_PersistStore::open (const char * file_name)
{
// Open the persistent log file for writing.
this->write_persistent_file_ = ACE_OS::open (file_name,
O_RDWR | O_CREAT | O_TRUNC,
ACE_DEFAULT_FILE_PERMS);
if (this->write_persistent_file_ == ACE_INVALID_HANDLE) {
perror ("open:write");
return -1;
}
// Open the persistnet log file for reading.
this->read_persistent_file_ = ACE_OS::open (file_name,
O_RDONLY);
if (this->write_persistent_file_ == ACE_INVALID_HANDLE) {
perror ("open:read");
return -1;
}
return 0;
}
int
TAO_PersistStore::close (void)
{
ACE_OS::close (this->write_persistent_file_);
return ACE_OS::close (this->read_persistent_file_);
}
// TODO: make these inline ..
CORBA::ULongLong
TAO_PersistStore::get_max_size (void)
{
return max_size_;
}
void
TAO_PersistStore::set_max_size (CORBA::ULongLong size)
{
this->max_size_ = size;
}
CORBA::ULongLong
TAO_PersistStore::get_current_size (void)
{
return this->current_size_;
}
CORBA::ULongLong
TAO_PersistStore::get_n_records (void)
{
return this->num_records_;
}
// inline ...
int
TAO_PersistStore::log (DsLogAdmin::LogRecord &rec)
{
CORBA::TypeCode_ptr tc;
ACE_Message_Block *mb;
struct PersistentData data;
char *rd_ptr;
// Check if we are allowed to write...
if (max_size_ !=0 && current_size_ >= max_size_)
return 1; // return code for log rec. full
// Acquire the mutex so that no other client can write to the log
write_lock_.acquire();
// Initialize a couple of fields first...
// ACE emulation of U Long Long (for platforms that don't have one)
// does not define postfix operators
rec.id = ++maxid_;
ORBSVCS_Time::Time_Value_to_TimeT(rec.time,ACE_OS::gettimeofday());
// Extract the typecode and message block from the record.
tc = rec.info.type ();
mb = rec.info._tao_get_cdr (); // TAO extension
data.byte_order = rec.info._tao_byte_order ();
// Get a pointer to the actual data in the ACE_Message_Block.
rd_ptr = mb->rd_ptr ();
// Get the size of the actual data in the ACE_Message_Block.
data.mb_size = mb->length ();
// Store the first chunk of persistent data.
// Get the kind of the CORBA::Any stored in the record.
data.id = rec.id;
data.time = rec.time;
data.kind = tc->kind ();
// Write the first block of information to the file.
ACE_OS::write (this->write_persistent_file_, (void*)&data, sizeof (PersistentData));
this->current_size_ += sizeof (PersistentData);
// Write the typecode to the file.
ACE_OS::write (this->write_persistent_file_, (void*) tc, sizeof (CORBA::TypeCode));
this->current_size_ += sizeof (CORBA::TypeCode);
// Write the actual message block data to the file.
ACE_OS::write (this->write_persistent_file_, (void*) rd_ptr, data.mb_size);
this->current_size_ += data.mb_size;
// Unlock the mutex
write_lock_.release();
// Increment the number of records in the log
++(this->num_records_);
// Debug print: # of records and current size in bytes
// cout << "Log now has " << this->num_records_ ;
// cout << " records using " << this->current_size_ << " bytes" << endl;
return 0;
}
int
TAO_PersistStore::retrieve (DsLogAdmin::RecordId id, DsLogAdmin::LogRecord &rec)
{
CORBA::TypeCode_var tc;
char *mb_data = NULL;
int retval = -1;
struct PersistentData data;
// Move to the beginning of the file.
ACE_OS::lseek (this->read_persistent_file_, 0, SEEK_SET);
while (ACE_OS::read (this->write_persistent_file_,
(void*) &data,
sizeof (PersistentData)) > 0)
{
tc = new CORBA::TypeCode (data.kind);
ACE_OS::read (this->write_persistent_file_,
(void*) tc.in (),
sizeof (CORBA::TypeCode));
mb_data = new char[data.mb_size];
ACE_OS::read (this->write_persistent_file_,
(void*) mb_data,
data.mb_size);
// Check to see if this id matches.
if (id == data.id)
{
// Create the message block.
ACE_Message_Block mb2 (mb_data, data.mb_size);
// Set the write pointer
mb2.wr_ptr (data.mb_size);
rec.id = id;
rec.time = data.time;
TAO::Unknown_IDL_Type *unk = 0;
ACE_NEW_RETURN (unk,
TAO::Unknown_IDL_Type (tc.in (),
&mb2,
data.byte_order),
-1);
rec.info.replace (unk);
retval = 1;
break;
}
}
return retval;
}
unsigned short
TAO_PersistStore::get_percentage_full (void)
{
// If the log size is unlimited, return 0.
if (this->max_size_ == 0)
return 0;
return ACE_static_cast (unsigned short,
(100U * this->current_size_ / this->max_size_));
}
|
