diff options
Diffstat (limited to 'src/db/update/Remove.cxx')
-rw-r--r-- | src/db/update/Remove.cxx | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/db/update/Remove.cxx b/src/db/update/Remove.cxx new file mode 100644 index 000000000..102347905 --- /dev/null +++ b/src/db/update/Remove.cxx @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2003-2014 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. + */ + +#include "config.h" /* must be first for large file support */ +#include "Remove.hxx" +#include "UpdateDomain.hxx" +#include "db/Song.hxx" +#include "db/LightSong.hxx" +#include "db/DatabaseListener.hxx" +#include "Log.hxx" + +#include <assert.h> + +/** + * Safely remove a song from the database. This must be done in the + * main task, to be sure that there is no pointer left to it. + */ +void +UpdateRemoveService::RunDeferred() +{ + assert(removed_song != nullptr); + + { + const auto uri = removed_song->GetURI(); + FormatDefault(update_domain, "removing %s", uri.c_str()); + } + + listener.OnDatabaseSongRemoved(removed_song->Export()); + + /* clear "removed_song" and send signal to update thread */ + remove_mutex.lock(); + removed_song = nullptr; + remove_cond.signal(); + remove_mutex.unlock(); +} + +void +UpdateRemoveService::Remove(const Song *song) +{ + assert(removed_song == nullptr); + + removed_song = song; + + DeferredMonitor::Schedule(); + + remove_mutex.lock(); + + while (removed_song != nullptr) + remove_cond.wait(remove_mutex); + + remove_mutex.unlock(); +} |