1/* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
2
3 This program is free software; you can redistribute it and/or modify
4 it under the terms of the GNU General Public License as published by
5 the Free Software Foundation; version 2 of the License.
6
7 This program is distributed in the hope that it will be useful,
8 but WITHOUT ANY WARRANTY; without even the implied warranty of
9 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 GNU General Public License for more details.
11
12 You should have received a copy of the GNU General Public License
13 along with this program; if not, write to the Free Software Foundation,
14 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
15
16/**
17 @file storage/perfschema/table_socket_instances.cc
18 Table SOCKET_INSTANCES (implementation).
19*/
20
21#include "my_global.h"
22#include "my_pthread.h"
23#include "pfs_instr.h"
24#include "pfs_column_types.h"
25#include "pfs_column_values.h"
26#include "table_socket_instances.h"
27#include "pfs_global.h"
28
29THR_LOCK table_socket_instances::m_table_lock;
30
31PFS_engine_table_share
32table_socket_instances::m_share=
33{
34 { C_STRING_WITH_LEN("socket_instances") },
35 &pfs_readonly_acl,
36 &table_socket_instances::create,
37 NULL, /* write_row */
38 NULL, /* delete_all_rows */
39 NULL, /* get_row_count */
40 1000, /* records */
41 sizeof(PFS_simple_index),
42 &m_table_lock,
43 { C_STRING_WITH_LEN("CREATE TABLE socket_instances("
44 "EVENT_NAME VARCHAR(128) not null,"
45 "OBJECT_INSTANCE_BEGIN BIGINT unsigned not null,"
46 "THREAD_ID BIGINT unsigned,"
47 "SOCKET_ID INTEGER not null,"
48 "IP VARCHAR(64) not null,"
49 "PORT INTEGER not null,"
50 "STATE ENUM('IDLE','ACTIVE') not null)") }
51};
52
53PFS_engine_table* table_socket_instances::create(void)
54{
55 return new table_socket_instances();
56}
57
58table_socket_instances::table_socket_instances()
59 : PFS_engine_table(&m_share, &m_pos),
60 m_row_exists(false), m_pos(0), m_next_pos(0)
61{}
62
63void table_socket_instances::reset_position(void)
64{
65 m_pos.m_index= 0;
66 m_next_pos.m_index= 0;
67}
68
69int table_socket_instances::rnd_next(void)
70{
71 PFS_socket *pfs;
72
73 for (m_pos.set_at(&m_next_pos);
74 m_pos.m_index < socket_max;
75 m_pos.next())
76 {
77 pfs= &socket_array[m_pos.m_index];
78 if (pfs->m_lock.is_populated())
79 {
80 make_row(pfs);
81 m_next_pos.set_after(&m_pos);
82 return 0;
83 }
84 }
85
86 return HA_ERR_END_OF_FILE;
87}
88
89int table_socket_instances::rnd_pos(const void *pos)
90{
91 PFS_socket *pfs;
92
93 set_position(pos);
94 DBUG_ASSERT(m_pos.m_index < socket_max);
95 pfs= &socket_array[m_pos.m_index];
96
97 if (! pfs->m_lock.is_populated())
98 return HA_ERR_RECORD_DELETED;
99
100 make_row(pfs);
101 return 0;
102}
103
104void table_socket_instances::make_row(PFS_socket *pfs)
105{
106 pfs_lock lock;
107 PFS_socket_class *safe_class;
108
109 m_row_exists= false;
110
111 /* Protect this reader against a socket delete */
112 pfs->m_lock.begin_optimistic_lock(&lock);
113
114 safe_class= sanitize_socket_class(pfs->m_class);
115 if (unlikely(safe_class == NULL))
116 return;
117
118 /** Extract ip address and port from raw address */
119 m_row.m_ip_length= pfs_get_socket_address(m_row.m_ip, sizeof(m_row.m_ip),
120 &m_row.m_port,
121 &pfs->m_sock_addr, pfs->m_addr_len);
122 m_row.m_event_name= safe_class->m_name;
123 m_row.m_event_name_length= safe_class->m_name_length;
124 m_row.m_identity= pfs->m_identity;
125 m_row.m_fd= pfs->m_fd;
126 m_row.m_state= (pfs->m_idle ? PSI_SOCKET_STATE_IDLE
127 : PSI_SOCKET_STATE_ACTIVE);
128 PFS_thread *safe_thread= sanitize_thread(pfs->m_thread_owner);
129
130 if (safe_thread != NULL)
131 {
132 m_row.m_thread_id= safe_thread->m_thread_internal_id;
133 m_row.m_thread_id_set= true;
134 }
135 else
136 m_row.m_thread_id_set= false;
137
138
139 if (pfs->m_lock.end_optimistic_lock(&lock))
140 m_row_exists= true;
141}
142
143int table_socket_instances::read_row_values(TABLE *table,
144 unsigned char *buf,
145 Field **fields,
146 bool read_all)
147{
148 Field *f;
149
150 if (unlikely(!m_row_exists))
151 return HA_ERR_RECORD_DELETED;
152
153 /* Set the null bits */
154 DBUG_ASSERT(table->s->null_bytes == 1);
155 buf[0]= 0;
156
157 for (; (f= *fields) ; fields++)
158 {
159 if (read_all || bitmap_is_set(table->read_set, f->field_index))
160 {
161 switch(f->field_index)
162 {
163 case 0: /* EVENT_NAME */
164 set_field_varchar_utf8(f, m_row.m_event_name, m_row.m_event_name_length);
165 break;
166 case 1: /* OBJECT_INSTANCE_BEGIN */
167 set_field_ulonglong(f, (intptr)m_row.m_identity);
168 break;
169 case 2: /* THREAD_ID */
170 if (m_row.m_thread_id_set)
171 set_field_ulonglong(f, m_row.m_thread_id);
172 else
173 f->set_null();
174 break;
175 case 3: /* SOCKET_ID */
176 set_field_ulong(f, m_row.m_fd);
177 break;
178 case 4: /* IP */
179 set_field_varchar_utf8(f, m_row.m_ip, m_row.m_ip_length);
180 break;
181 case 5: /* PORT */
182 set_field_ulong(f, m_row.m_port);
183 break;
184 case 6: /* STATE */
185 set_field_enum(f, m_row.m_state);
186 break;
187 default:
188 DBUG_ASSERT(false);
189 }
190 }
191 }
192
193 return 0;
194}
195
196