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#ifndef QEVENTDISPATCHER_UNIX_P_H
#define QEVENTDISPATCHER_UNIX_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "QtCore/qabstracteventdispatcher.h"
#include "QtCore/qlist.h"
#include "private/qabstracteventdispatcher_p.h"
#include "private/qcore_unix_p.h"
#include "private/qpodlist_p.h"
#include "QtCore/qvarlengtharray.h"
#include "private/qtimerinfo_unix_p.h"

#if !defined(Q_OS_VXWORKS)
#  include <sys/time.h>
#  if (!defined(Q_OS_HPUX) || defined(__ia64)) && !defined(Q_OS_NACL)
#    include <sys/select.h>
#  endif
#endif

QT_BEGIN_NAMESPACE

struct QSockNot
{
    QSocketNotifier *obj;
    int fd;
    fd_set *queue;
};

class QSockNotType
{
public:
    QSockNotType();
    ~QSockNotType();

    typedef QPodList<QSockNot*, 32> List;

    List list;
    fd_set select_fds;
    fd_set enabled_fds;
    fd_set pending_fds;

};

class QEventDispatcherUNIXPrivate;

class Q_CORE_EXPORT QEventDispatcherUNIX : public QAbstractEventDispatcher
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QEventDispatcherUNIX)

public:
    explicit QEventDispatcherUNIX(QObject *parent = 0);
    ~QEventDispatcherUNIX();

    bool processEvents(QEventLoop::ProcessEventsFlags flags) Q_DECL_OVERRIDE;
    bool hasPendingEvents() Q_DECL_OVERRIDE;

    void registerSocketNotifier(QSocketNotifier *notifier) Q_DECL_FINAL;
    void unregisterSocketNotifier(QSocketNotifier *notifier) Q_DECL_FINAL;

    void registerTimer(int timerId, int interval, Qt::TimerType timerType, QObject *object) Q_DECL_FINAL;
    bool unregisterTimer(int timerId) Q_DECL_FINAL;
    bool unregisterTimers(QObject *object) Q_DECL_FINAL;
    QList<TimerInfo> registeredTimers(QObject *object) const Q_DECL_FINAL;

    int remainingTime(int timerId) Q_DECL_FINAL;

    void wakeUp() Q_DECL_FINAL;
    void interrupt() Q_DECL_FINAL;
    void flush() Q_DECL_OVERRIDE;

protected:
    QEventDispatcherUNIX(QEventDispatcherUNIXPrivate &dd, QObject *parent = 0);

    void setSocketNotifierPending(QSocketNotifier *notifier);

    int activateTimers();
    int activateSocketNotifiers();

    virtual int select(int nfds,
                       fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
                       timespec *timeout);
};

class Q_CORE_EXPORT QEventDispatcherUNIXPrivate : public QAbstractEventDispatcherPrivate
{
    Q_DECLARE_PUBLIC(QEventDispatcherUNIX)

public:
    QEventDispatcherUNIXPrivate();
    ~QEventDispatcherUNIXPrivate();

    int doSelect(QEventLoop::ProcessEventsFlags flags, timespec *timeout);
    virtual int initThreadWakeUp() Q_DECL_FINAL;
    virtual int processThreadWakeUp(int nsel) Q_DECL_FINAL;

    // note for eventfd(7) support:
    // if thread_pipe[1] is -1, then eventfd(7) is in use and is stored in thread_pipe[0]
    int thread_pipe[2];

    // highest fd for all socket notifiers
    int sn_highest;
    // 3 socket notifier types - read, write and exception
    QSockNotType sn_vec[3];

    QTimerInfoList timerList;

    // pending socket notifiers list
    QSockNotType::List sn_pending_list;

    QAtomicInt wakeUps;
    QAtomicInt interrupt; // bool
};

QT_END_NAMESPACE

#endif // QEVENTDISPATCHER_UNIX_P_H