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comparison PostgreSQL/Plugins/PostgreSQLStorageArea.cpp @ 134:cc3dc759c989

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Added an advisory lock to avoid race conditions during database setup
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 08 May 2019 20:21:13 +0200
parents 714c5d2bee76
children 3266785d5627
comparison
equal deleted inserted replaced
133:b1d7d255fb73 134:cc3dc759c989
38 if (parameters_.HasLock()) 38 if (parameters_.HasLock())
39 { 39 {
40 db->AdvisoryLock(43 /* some arbitrary constant */); 40 db->AdvisoryLock(43 /* some arbitrary constant */);
41 } 41 }
42 42
43 /**
44 * Try and acquire a transient advisory lock to protect the setup
45 * of the database, because concurrent statements like "CREATE
46 * TABLE" are not protected by transactions.
47 * https://groups.google.com/d/msg/orthanc-users/yV3LSTh_TjI/h3PRApJFBAAJ
48 **/
49 PostgreSQLDatabase::TransientAdvisoryLock lock(*db, 44 /* some arbitrary constant */);
50
43 if (clearAll_) 51 if (clearAll_)
44 { 52 {
45 db->ClearAll(); 53 db->ClearAll();
46 } 54 }
47 55