Adding upstream version 2:20.4+dfsg.upstream/2%20.4+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 65 insertions, 0 deletions

diff --git a/xbmc/DatabaseManager.h b/xbmc/DatabaseManager.h
new file mode 100644
index 0000000..0fb10d2
--- /dev/null
+++ b/xbmc/DatabaseManager.h
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+/*
+ *  Copyright (C) 2012-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+#include "threads/CriticalSection.h"
+
+#include <atomic>
+#include <map>
+#include <string>
+
+class CDatabase;
+class DatabaseSettings;
+
+/*!
+ \ingroup database
+ \brief Database manager class for handling database updating
+
+ Ensures that databases used in XBMC are up to date, and if a database can't be
+ opened, ensures we don't continuously try it.
+
+ */
+class CDatabaseManager
+{
+public:
+  CDatabaseManager();
+  CDatabaseManager(const CDatabaseManager&) = delete;
+  CDatabaseManager const& operator=(CDatabaseManager const&) = delete;
+  ~CDatabaseManager();
+
+  /*! \brief Initialize the database manager
+   Checks that all databases are up to date, otherwise updates them.
+   */
+  void Initialize();
+
+  /*! \brief Check whether we can open a database.
+
+   Checks whether the database has been updated correctly, if so returns true.
+   If the database update failed, returns false immediately.
+   If the database update is in progress, returns false.
+
+   \param name the name of the database to check.
+   \return true if the database can be opened, false otherwise.
+   */
+  bool CanOpen(const std::string &name);
+
+  bool IsUpgrading() const { return m_bIsUpgrading; }
+
+private:
+  std::atomic<bool> m_bIsUpgrading;
+
+  enum DB_STATUS { DB_CLOSED, DB_UPDATING, DB_READY, DB_FAILED };
+  void UpdateStatus(const std::string &name, DB_STATUS status);
+  void UpdateDatabase(CDatabase &db, DatabaseSettings *settings = NULL);
+  bool Update(CDatabase &db, const DatabaseSettings &settings);
+  bool UpdateVersion(CDatabase &db, const std::string &dbName);
+
+  CCriticalSection            m_section;     ///< Critical section protecting m_dbStatus.
+  std::map<std::string, DB_STATUS> m_dbStatus;    ///< Our database status map.
+};