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comparison MySQL/Plugins/MySQLDefinitions.h @ 137:52b3859ee0b7

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MySQL: acquiring named locks instead of numbers
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 09 May 2019 11:29:17 +0200
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children 4cd7e45b671e
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136:3266785d5627 137:52b3859ee0b7
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU Affero General Public License
9 * as published by the Free Software Foundation, either version 3 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Affero General Public License for more details.
16 *
17 * You should have received a copy of the GNU Affero General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 **/
20
21
22 #pragma once
23
24 #include <stdint.h>
25
26
27 /**
28 * This advisory lock is used if the "Lock" option is set to "true",
29 * in order to prevent the execution of two PostgreSQL index plugins
30 * on the same database.
31 **/
32 static const char* const MYSQL_LOCK_INDEX = "orthanc_index_lock";
33
34
35 /**
36 * This advisory lock is used if the "Lock" option is set to "true",
37 * in order to prevent the execution of two PostgreSQL storage area
38 * plugins on the same database.
39 **/
40 static const char* const MYSQL_LOCK_STORAGE = "orthanc_storage_lock";
41
42
43 /**
44 * Transient advisory lock to protect the setup of the database,
45 * because concurrent statements like "CREATE TABLE" are not protected
46 * by transactions.
47 * https://groups.google.com/d/msg/orthanc-users/yV3LSTh_TjI/h3PRApJFBAAJ
48 **/
49 static const char* const MYSQL_LOCK_DATABASE_SETUP = "orthanc_setup_lock";