text: /****************************************************************************
  **
  ** Copyright (C) 2015 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the QtCore module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see http://www.qt.io/terms-conditions. For further
  ** information use the contact form at http://www.qt.io/contact-us.
  **
  ** GNU Lesser General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU Lesser
  ** General Public License version 2.1 or version 3 as published by the Free
  ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
  ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
  ** following information to ensure the GNU Lesser General Public License
  ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
  ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  **
  ** As a special exception, The Qt Company gives you certain additional
  ** rights. These rights are described in The Qt Company LGPL Exception
  ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  **
  ** GNU General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU
  ** General Public License version 3.0 as published by the Free Software
  ** Foundation and appearing in the file LICENSE.GPL included in the
  ** packaging of this file.  Please review the following information to
  ** ensure the GNU General Public License version 3.0 requirements will be
  ** met: http://www.gnu.org/copyleft/gpl.html.
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  
  #ifndef QTHREADSTORAGE_H
  #define QTHREADSTORAGE_H
  
  #include <QtCore/qglobal.h>
  
  #ifndef QT_NO_THREAD
  
  QT_BEGIN_HEADER
  
  QT_BEGIN_NAMESPACE
  
  QT_MODULE(Core)
  
  class Q_CORE_EXPORT QThreadStorageData
  {
  public:
      explicit QThreadStorageData(void (*func)(void *));
      ~QThreadStorageData();
  
      void** get() const;
      void** set(void* p);
  
      static void finish(void**);
      int id;
  };
  
  #if !defined(QT_MOC_CPP)
  // MOC_SKIP_BEGIN
  
  // pointer specialization
  template <typename T>
  inline
  T *&qThreadStorage_localData(QThreadStorageData &d, T **)
  {
      void **v = d.get();
      if (!v) v = d.set(0);
      return *(reinterpret_cast<T**>(v));
  }
  
  template <typename T>
  inline
  T *qThreadStorage_localData_const(const QThreadStorageData &d, T **)
  {
      void **v = d.get();
      return v ? *(reinterpret_cast<T**>(v)) : 0;
  }
  
  template <typename T>
  inline
  void qThreadStorage_setLocalData(QThreadStorageData &d, T **t)
  { (void) d.set(*t); }
  
  template <typename T>
  inline
  void qThreadStorage_deleteData(void *d, T **)
  { delete static_cast<T *>(d); }
  
  // value-based specialization
  template <typename T>
  inline
  T &qThreadStorage_localData(QThreadStorageData &d, T *)
  {
      void **v = d.get();
      if (!v) v = d.set(new T());
      return *(reinterpret_cast<T*>(*v));
  }
  
  template <typename T>
  inline
  T qThreadStorage_localData_const(const QThreadStorageData &d, T *)
  {
      void **v = d.get();
      return v ? *(reinterpret_cast<T*>(*v)) : T();
  }
  
  template <typename T>
  inline
  void qThreadStorage_setLocalData(QThreadStorageData &d, T *t)
  { (void) d.set(new T(*t)); }
  
  template <typename T>
  inline
  void qThreadStorage_deleteData(void *d, T *)
  { delete static_cast<T *>(d); }
  
  
  // MOC_SKIP_END
  #endif
  
  template <class T>
  class QThreadStorage
  {
  private:
      QThreadStorageData d;
  
      Q_DISABLE_COPY(QThreadStorage)
  
      static inline void deleteData(void *x)
      { qThreadStorage_deleteData(x, reinterpret_cast<T*>(0)); }
  
  public:
      inline QThreadStorage() : d(deleteData) { }
      inline ~QThreadStorage() { }
  
      inline bool hasLocalData() const
      { return d.get() != 0; }
  
      inline T& localData()
      { return qThreadStorage_localData(d, reinterpret_cast<T*>(0)); }
      inline T localData() const
      { return qThreadStorage_localData_const(d, reinterpret_cast<T*>(0)); }
  
      inline void setLocalData(T t)
      { qThreadStorage_setLocalData(d, &t); }
  };
  
  QT_END_NAMESPACE
  
  QT_END_HEADER
  
  #endif // QT_NO_THREAD
  
  #endif // QTHREADSTORAGE_H
  