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/*
* 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 "UpdateRemove.hxx"
#include "UpdateDomain.hxx"
#include "GlobalEvents.hxx"
#include "thread/Mutex.hxx"
#include "thread/Cond.hxx"
#include "Song.hxx"
#include "Main.hxx"
#include "Instance.hxx"
#include "Log.hxx"
#ifdef ENABLE_SQLITE
#include "StickerDatabase.hxx"
#include "SongSticker.hxx"
#endif
#include <assert.h>
static const Song *removed_song;
static Mutex remove_mutex;
static Cond remove_cond;
/**
* 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.
*/
static void
song_remove_event(void)
{
assert(removed_song != nullptr);
{
const auto uri = removed_song->GetURI();
FormatDefault(update_domain, "removing %s", uri.c_str());
}
#ifdef ENABLE_SQLITE
/* if the song has a sticker, remove it */
if (sticker_enabled())
sticker_song_delete(*removed_song);
#endif
{
const auto uri = removed_song->GetURI();
instance->DeleteSong(uri.c_str());
}
/* clear "removed_song" and send signal to update thread */
remove_mutex.lock();
removed_song = nullptr;
remove_cond.signal();
remove_mutex.unlock();
}
void
update_remove_global_init(void)
{
GlobalEvents::Register(GlobalEvents::DELETE, song_remove_event);
}
void
update_remove_song(const Song *song)
{
assert(removed_song == nullptr);
removed_song = song;
GlobalEvents::Emit(GlobalEvents::DELETE);
remove_mutex.lock();
while (removed_song != nullptr)
remove_cond.wait(remove_mutex);
remove_mutex.unlock();
}
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