// TortoiseSVN - a Windows shell extension for easy version control

// Copyright (C) 2005-2006, 2016, 2021 - TortoiseSVN

// 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,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
#pragma once

#include "TSVNPath.h"
#include "SmartHandle.h"
#include <deque>

/**
 * \ingroup TSVNCache
 * Handles notifications to the shell about status changes. This is done
 * in a separate thread to avoid deadlocks.
 */
class CShellUpdater
{
public:
    CShellUpdater();
    ~CShellUpdater();

public:
    void Initialise();
    void AddPathForUpdate(const CTSVNPath& path);
    void Stop();

private:
    static unsigned int __stdcall ThreadEntry(void* pContext);
    void WorkerThread();

private:
    CComAutoCriticalSection m_critSec;
    CAutoGeneralHandle      m_hThread;
    std::deque<CTSVNPath>   m_pathsToUpdate;
    CAutoGeneralHandle      m_hTerminationEvent;
    CAutoGeneralHandle      m_hWakeEvent;

    volatile LONG m_bItemsAddedSinceLastUpdate;
    volatile LONG m_bRunning;
};