include/tools/mempool.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19 #ifndef INCLUDED_TOOLS_MEMPOOL_HXX
  20 #define INCLUDED_TOOLS_MEMPOOL_HXX
  21
  22 #include <sal/config.h>
  23
  24 #include <sal/macros.h>
  25 #include <tools/toolsdllapi.h>
  26
  27 struct FixedMemPool_Impl;
  28
  29 class TOOLS_DLLPUBLIC FixedMemPool
  30 {
  31     FixedMemPool_Impl * m_pImpl;
  32     char const *        m_pTypeName;
  33
  34 public:
  35                     FixedMemPool( char const * pTypeName,
  36                                   sal_uInt16 nTypeSize );
  37                     ~FixedMemPool();
  38
  39     void*           Alloc();
  40     void            Free( void* p );
  41 };
  42
  43 #define DECL_FIXEDMEMPOOL_NEW_DECL() \
  44 static void * operator new( size_t n )
  45
  46 #define DECL_FIXEDMEMPOOL_NEW_IMPL( Class ) \
  47 void * Class::operator new( size_t n )
  48
  49 #define IMPL_FIXEDMEMPOOL_NEW_BODY( Class, aPool ) \
  50 { \
  51     if ( n == sizeof( Class ) ) \
  52         return (aPool).Alloc(); \
  53     else \
  54         return ::operator new(n); \
  55 }
  56
  57 #define DECL_FIXEDMEMPOOL_NEW_INLINE( Class, aPool ) \
  58 DECL_FIXEDMEMPOOL_NEW_DECL() \
  59 IMPL_FIXEDMEMPOOL_NEW_BODY( Class, aPool )
  60
  61 #define DECL_FIXEDMEMPOOL_DEL_DECL() \
  62 static void operator delete( void * p, size_t n )
  63
  64 #define DECL_FIXEDMEMPOOL_DEL_IMPL( Class ) \
  65 void Class::operator delete( void * p, size_t n )
  66
  67 #define IMPL_FIXEDMEMPOOL_DEL_BODY( Class, aPool ) \
  68 { \
  69     if ( n == sizeof( Class ) ) \
  70         (aPool).Free(p); \
  71     else \
  72         ::operator delete(p); \
  73 }
  74
  75 #define DECL_FIXEDMEMPOOL_DEL_INLINE( Class, aPool ) \
  76 DECL_FIXEDMEMPOOL_DEL_DECL() \
  77 IMPL_FIXEDMEMPOOL_DEL_BODY( Class, aPool )
  78
  79 #define DECL_FIXEDMEMPOOL_NEWDEL( Class ) \
  80     private: \
  81         static FixedMemPool aPool; \
  82     public: \
  83         DECL_FIXEDMEMPOOL_NEW_INLINE( Class, aPool ) \
  84         DECL_FIXEDMEMPOOL_DEL_INLINE( Class, aPool )
  85
  86 #define IMPL_FIXEDMEMPOOL_NEWDEL( Class ) \
  87     FixedMemPool Class::aPool( SAL_STRINGIFY( Class ), sizeof( Class ) );
  88
  89 #define DECL_FIXEDMEMPOOL_NEWDEL_DLL( Class ) \
  90     private: \
  91         static FixedMemPool aPool; \
  92     public: \
  93         DECL_FIXEDMEMPOOL_NEW_DECL(); \
  94         DECL_FIXEDMEMPOOL_DEL_DECL();
  95
  96 #define IMPL_FIXEDMEMPOOL_NEWDEL_DLL( Class ) \
  97     FixedMemPool Class::aPool( SAL_STRINGIFY( Class ), sizeof( Class ) ); \
  98     DECL_FIXEDMEMPOOL_NEW_IMPL( Class ) \
  99     IMPL_FIXEDMEMPOOL_NEW_BODY( Class, aPool ) \
 100     DECL_FIXEDMEMPOOL_DEL_IMPL( Class ) \
 101     IMPL_FIXEDMEMPOOL_DEL_BODY( Class, aPool )
 102
 103 #endif
 104
 105 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */