63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/*
|
|
* Copyright 2003-2020 The Music Player Daemon Project
|
|
* http://www.musicpd.org
|
|
*
|
|
* 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#ifndef MPD_UPDATE_REMOVE_HXX
|
|
#define MPD_UPDATE_REMOVE_HXX
|
|
|
|
#include "event/DeferEvent.hxx"
|
|
#include "thread/Mutex.hxx"
|
|
|
|
#include <forward_list>
|
|
#include <string>
|
|
|
|
class DatabaseListener;
|
|
|
|
/**
|
|
* This class handles #Song removal. It defers the action to the main
|
|
* thread to ensure that all references to the #Song are gone.
|
|
*/
|
|
class UpdateRemoveService final {
|
|
DatabaseListener &listener;
|
|
|
|
Mutex mutex;
|
|
|
|
std::forward_list<std::string> uris;
|
|
|
|
DeferEvent defer;
|
|
|
|
public:
|
|
UpdateRemoveService(EventLoop &_loop, DatabaseListener &_listener)
|
|
:listener(_listener),
|
|
defer(_loop, BIND_THIS_METHOD(RunDeferred)) {}
|
|
|
|
/**
|
|
* Sends a signal to the main thread which will in turn remove
|
|
* the song: from the sticker database and from the playlist.
|
|
* This serialized access is implemented to avoid excessive
|
|
* locking.
|
|
*/
|
|
void Remove(std::string &&uri);
|
|
|
|
private:
|
|
/* DeferEvent callback */
|
|
void RunDeferred() noexcept;
|
|
};
|
|
|
|
#endif
|