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** Alternatively, this file may be used under the terms of the GNU General

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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"

#if defined(Q_OS_VXWORKS)

#  include <sys/times.h>

#else

#  include <sys/time.h>

#  if (!defined(Q_OS_HPUX) || defined(__ia64)) && !defined(Q_OS_NACL)

#    include <sys/select.h>

#  endif

#endif

QT_BEGIN_NAMESPACE

// internal timer info

struct QTimerInfo {

    int id;           // - timer identifier

    timeval interval; // - timer interval

    timeval timeout;  // - when to sent event

    QObject *obj;     // - object to receive event

    QTimerInfo **activateRef; // - ref from activateTimers

};

class QTimerInfoList : public QList<QTimerInfo*>

{

#if ((_POSIX_MONOTONIC_CLOCK-0 <= 0) && !defined(Q_OS_MAC)) || defined(QT_BOOTSTRAPPED)

    timeval previousTime;

    clock_t previousTicks;

    int ticksPerSecond;

    int msPerTick;

    bool timeChanged(timeval *delta);

#endif

    // state variables used by activateTimers()

    QTimerInfo *firstTimerInfo;

public:

    QTimerInfoList();

    timeval currentTime;

    timeval updateCurrentTime();

    // must call updateCurrentTime() first!

    void repairTimersIfNeeded();

    bool timerWait(timeval &);

    void timerInsert(QTimerInfo *);

    void timerRepair(const timeval &);

    void registerTimer(int timerId, int interval, QObject *object);

    bool unregisterTimer(int timerId);

    bool unregisterTimers(QObject *object);

    QList<QPair<int, int> > registeredTimers(QObject *object) const;

    int activateTimers();

};

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);

    bool hasPendingEvents();

    void registerSocketNotifier(QSocketNotifier *notifier);

    void unregisterSocketNotifier(QSocketNotifier *notifier);

    void registerTimer(int timerId, int interval, QObject *object);

    bool unregisterTimer(int timerId);

    bool unregisterTimers(QObject *object);

    QList<TimerInfo> registeredTimers(QObject *object) const;

    void wakeUp();

    void interrupt();

    void flush();

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,

                       timeval *timeout);

};

class Q_CORE_EXPORT QEventDispatcherUNIXPrivate : public QAbstractEventDispatcherPrivate

{

    Q_DECLARE_PUBLIC(QEventDispatcherUNIX)

public:

    QEventDispatcherUNIXPrivate();

    ~QEventDispatcherUNIXPrivate();

    int doSelect(QEventLoop::ProcessEventsFlags flags, timeval *timeout);

    bool mainThread;

    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;

    bool interrupt;

};

QT_END_NAMESPACE

#endif // QEVENTDISPATCHER_UNIX_P_H