/*****************************************************************************
* async_queue.hpp
*****************************************************************************
* Copyright (C) 2003 the VideoLAN team
*
* Authors: Cyril Deguet <asmax@via.ecp.fr>
* Olivier Teulière <ipkiss@via.ecp.fr>
*
* 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 ASYNC_QUEUE_HPP
#define ASYNC_QUEUE_HPP
#include "cmd_generic.hpp"
#include <list>
#include <string>
#include <memory>
#include <vlc_threads.h>
#include <vlc_cxx_helpers.hpp>
class OSTimer;
/// Asynchronous queue for commands
class AsyncQueue: public SkinObject
{
public:
/// Get the instance of AsyncQueue
/// Returns NULL if initialization failed.
static AsyncQueue *instance( intf_thread_t *pIntf );
/// Destroy the instance of AsyncQueue
static void destroy( intf_thread_t *pIntf );
/// Add a command in the queue, after having removed the commands
/// of the same type already in the queue if needed
void push( const CmdGenericPtr &rcCommand, bool removePrev = true );
/// Remove the commands of the given type
void remove( const std::string &rType , const CmdGenericPtr &rcCommand );
/// Flush the queue and execute the commands
void flush();
private:
/// Command queue
using cmdList_t = std::list<CmdGenericPtr>;
cmdList_t m_cmdList;
/// Timer
std::unique_ptr<OSTimer> m_pTimer;
/// Mutex
vlc::threads::mutex m_lock;
// Private because it is a singleton
AsyncQueue( intf_thread_t *pIntf );
// Callback to flush the queue
DEFINE_CALLBACK( AsyncQueue, Flush );
};
#endif
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