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PsAllocator.h

Go to the documentation of this file.

/*
 * This file is part of openMask © INRIA, CNRS, Universite de Rennes 1 1993-2002, thereinafter the Software
 * 
 * The Software has been developped within the Siames Project. 
 * INRIA, the University of Rennes 1 and CNRS jointly hold intellectual property rights
 * 
 * The Software has been registered with the Agence pour la Protection des
 * Programmes (APP) under registration number IDDN.FR.001.510008.00.S.P.2001.000.4120
 *
 * This file may be distributed under the terms of the Q Public License
 * version 1.0 as defined by Trolltech AS of Norway and appearing in the file
 * LICENSE.QPL included in the packaging of this file.
 *
 * Licensees holding valid specific licenses issued by INRIA, CNRS or Université de Rennes 1 
 * for the software may use this file in accordance with that specific license 
 *
 */
#ifndef PsAllocatorHEADER
#define PsAllocatorHEADER

#ifdef _SGI
#include <stddef.h>
#else
#include <cstddef>
#endif
 
template <typename T> class PsAllocatorT;

template<>
class PsAllocatorT<void> {
public:
  typedef void*       pointer;
  typedef const void* const_pointer;
  typedef void        value_type;

  template <typename _Tp1> struct rebind {
    typedef PsAllocatorT<_Tp1> other;
  };
};

template <typename T> 
class PsAllocatorT {
public:
   typedef size_t size_type;
   typedef ptrdiff_t difference_type;
   typedef T * pointer;
   typedef const T* const_pointer;
   typedef T& reference;
   typedef const T & const_reference;
   typedef T value_type;

   template <typename T1> struct rebind {
      typedef PsAllocatorT<T1> other;
   };

   PsAllocatorT () throw() {
      //cerr<<"PsAllocatorT"<<endl;
   }


   PsAllocatorT(const PsAllocatorT &) throw() {
      //cerr<<"PsAllocatorT(const PsAllocatorT &)"<<endl;
   }


   template <typename U> PsAllocatorT(const PsAllocatorT<U> &) throw() {
      //cerr<<"PsAllocatorT(const PsAllocatorT<U> &)"<<endl;   
   }


   ~PsAllocatorT() throw() {
      //cerr<<"~PsAllocatorT()"<<endl;
   }
   
   pointer address(reference x) const {
      return &x;
   }

   const_pointer address(const_reference x) const {
      return &x;
   }
   
   pointer allocate(size_type n, PsAllocatorT<void>::const_pointer hint  = 0) {
#ifdef _DEBUGALLOCATIONMOME
      cerr<<"PsAllocatorT::allocate"<<endl;
#endif
      if(n<=0) {
         n=1;
      }
      pointer resul=(pointer)operator new(n*sizeof(T));
#ifdef _DEBUGALLOCATIONMOME
      cerr<<"PsAllocatorT::allocate returns "<<resul<<" of size "<<n*sizeof(T)<<endl;
#endif
      return resul;
   }
   
   void deallocate(pointer p, size_type n) {
#ifdef _DEBUGALLOCATIONMOME
      cerr<<"PsAllocatorT::deallocate"<<endl;
#endif
      operator delete ((void *)p);
   }

   size_type max_size() const throw() {
#ifdef _DEBUGALLOCATIONMOME
      cerr<<"PsAllocatorT::max_size"<<endl;
#endif
      return 16374;
   }

   void construct(pointer p, const T& val) {
#ifdef _DEBUGALLOCATIONMOME
      cerr<<"PsAllocatorT::construct"<<endl;
#endif
      return new((void *)p) T(val);
   };

   void destroy(pointer p) {
#ifdef _DEBUGALLOCATIONMOME
      cerr<<"PsAllocatorT::destroy"<<endl;
#endif
      ((T*)p)->~T() ;
   }
};



#endif

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