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
|
/* Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
#include "my_global.h"
#include "cursor_by_thread_connect_attr.h"
cursor_by_thread_connect_attr::cursor_by_thread_connect_attr(
const PFS_engine_table_share *share) :
PFS_engine_table(share, &m_pos), m_row_exists(false)
{}
int cursor_by_thread_connect_attr::rnd_next(void)
{
PFS_thread *thread;
for (m_pos.set_at(&m_next_pos);
m_pos.has_more_thread();
m_pos.next_thread())
{
thread= &thread_array[m_pos.m_index_1];
if (thread->m_lock.is_populated())
{
make_row(thread, m_pos.m_index_2);
if (m_row_exists)
{
m_next_pos.set_after(&m_pos);
return 0;
}
}
}
return HA_ERR_END_OF_FILE;
}
int cursor_by_thread_connect_attr::rnd_pos(const void *pos)
{
PFS_thread *thread;
set_position(pos);
DBUG_ASSERT(m_pos.m_index_1 < thread_max);
thread= &thread_array[m_pos.m_index_1];
if (!thread->m_lock.is_populated())
return HA_ERR_RECORD_DELETED;
make_row(thread, m_pos.m_index_2);
if (m_row_exists)
return 0;
return HA_ERR_RECORD_DELETED;
}
void cursor_by_thread_connect_attr::reset_position(void)
{
m_pos.reset();
m_next_pos.reset();
}
|
