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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtCore module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

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

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

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    34 **

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    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef QTHREAD_H

    43 #define QTHREAD_H

    44 

    45 #include <QtCore/qobject.h>

    46 

    47 #include <limits.h>

    48 

    49 QT_BEGIN_HEADER

    50 

    51 QT_BEGIN_NAMESPACE

    52 

    53 QT_MODULE(Core)

    54 

    55 class QThreadData;

    56 class QThreadPrivate;

    57 

    58 #ifndef QT_NO_THREAD

    59 class Q_CORE_EXPORT QThread : public QObject

    60 {

    61 public:

    62     static Qt::HANDLE currentThreadId();

    63     static QThread *currentThread();

    64     static int idealThreadCount();

    65     static void yieldCurrentThread();

    66 

    67     explicit QThread(QObject *parent = 0);

    68     ~QThread();

    69 

    70     enum Priority {

    71         IdlePriority,

    72 

    73         LowestPriority,

    74         LowPriority,

    75         NormalPriority,

    76         HighPriority,

    77         HighestPriority,

    78 

    79         TimeCriticalPriority,

    80 

    81         InheritPriority

    82     };

    83 

    84     void setPriority(Priority priority);

    85     Priority priority() const;

    86 

    87     bool isFinished() const;

    88     bool isRunning() const;

    89 

    90     void setStackSize(uint stackSize);

    91     uint stackSize() const;

    92 

    93     void exit(int retcode = 0);

    94 

    95 public Q_SLOTS:

    96     void start(Priority = InheritPriority);

    97     void terminate();

    98     void quit();

    99 

   100 public:

   101     // default argument causes thread to block indefinately

   102     bool wait(unsigned long time = ULONG_MAX);

   103 

   104 Q_SIGNALS:

   105     void started();

   106     void finished();

   107     void terminated();

   108 

   109 protected:

   110     virtual void run();

   111     int exec();

   112 

   113     static void setTerminationEnabled(bool enabled = true);

   114 

   115     static void sleep(unsigned long);

   116     static void msleep(unsigned long);

   117     static void usleep(unsigned long);

   118 

   119 #ifdef QT3_SUPPORT

   120 public:

   121     inline QT3_SUPPORT bool finished() const { return isFinished(); }

   122     inline QT3_SUPPORT bool running() const { return isRunning(); }

   123 #endif

   124 

   125 protected:

   126     QThread(QThreadPrivate &dd, QObject *parent = 0);

   127 

   128 private:

   129     Q_OBJECT

   130     Q_DECLARE_PRIVATE(QThread)

   131 

   132     static void initialize();

   133     static void cleanup();

   134 

   135     friend class QCoreApplication;

   136     friend class QThreadData;

   137 };

   138 

   139 #else // QT_NO_THREAD

   140 

   141 class Q_CORE_EXPORT QThread : public QObject

   142 {

   143 public:

   144     static Qt::HANDLE currentThreadId() { return Qt::HANDLE(currentThread()); }

   145     static QThread* currentThread();

   146     

   147 protected:

   148     QThread(QThreadPrivate &dd, QObject *parent = 0);

   149 

   150 private:

   151     explicit QThread(QObject *parent = 0);

   152     static QThread *instance;

   153 

   154     friend class QCoreApplication;

   155     friend class QThreadData;

   156     friend class QAdoptedThread;

   157     Q_DECLARE_PRIVATE(QThread)

   158 };

   159 

   160 #endif // QT_NO_THREAD

   161 

   162 QT_END_NAMESPACE

   163 

   164 QT_END_HEADER

   165 

   166 #endif // QTHREAD_H