C4FileMonitor.h

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/*
 * OpenClonk, http://www.openclonk.org
 *
 * Copyright (c) 2008-2009, RedWolf Design GmbH, http://www.clonk.de/
 * Copyright (c) 2009-2016, The OpenClonk Team and contributors
 *
 * Distributed under the terms of the ISC license; see accompanying file
 * "COPYING" for details.
 *
 * "Clonk" is a registered trademark of Matthes Bender, used with permission.
 * See accompanying file "TRADEMARK" for details.
 *
 * To redistribute this file separately, substitute the full license texts
 * for the above references.
 */
 
// An inotify wrapper
 
#ifndef STD_FILE_MONITOR_H_INC
#define STD_FILE_MONITOR_H_INC
 
#include "network/C4InteractiveThread.h"
#include "platform/StdScheduler.h"
 
#ifdef __APPLE__
#import <CoreFoundation/CoreFoundation.h>
#import <CoreServices/CoreServices.h>
#import "platform/ObjectiveCAssociated.h"
#endif
 
class C4FileMonitor: public StdSchedulerProc, public C4InteractiveThread::Callback
#ifdef __APPLE__
, public ObjectiveCAssociated
#endif
{
 
public:
 
    typedef void (*ChangeNotify)(const char *, const char *);
 
    C4FileMonitor(ChangeNotify pCallback);
    ~C4FileMonitor() override;
 
    void StartMonitoring();
    void AddDirectory(const char *szDir);
 
    // StdSchedulerProc:
    bool Execute(int iTimeout = -1, pollfd * = nullptr) override;
 
    // Signal for calling Execute()
#ifdef STDSCHEDULER_USE_EVENTS
    HANDLE GetEvent() override;
#else
    void GetFDs(std::vector<struct pollfd> & FDs) override;
#endif
 
    // C4InteractiveThread::Callback:
    void OnThreadEvent(C4InteractiveEventType eEvent, void *pEventData) override;
 
private:
 
    bool fStarted;
    ChangeNotify pCallback;
 
#ifdef HAVE_SYS_INOTIFY_H
    int fd;
    std::map<int, const char *> watch_descriptors;
#elif defined(_WIN32)
 
    HANDLE hEvent;
 
    struct TreeWatch
    {
        HANDLE hDir;
        StdCopyStrBuf DirName;
        OVERLAPPED ov;
        char Buffer[1024];
        TreeWatch *Next;
    };
    TreeWatch *pWatches;
 
    void HandleNotify(const char *szDir, const struct _FILE_NOTIFY_INFORMATION *pNotify);
#elif defined(__APPLE__)
    FSEventStreamRef eventStream;
    FSEventStreamContext context;
    void StartStream();
    void StopStream();
#endif
};
 
#endif // STD_FILE_MONITOR_H_INC