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 SAL_WARN_UNUSED 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 IMPL_FIXEDMEMPOOL_NEW_BODY( Class, aPool ) \
  47 { \
  48     if ( n == sizeof( Class ) ) \
  49         return (aPool).Alloc(); \
  50     else \
  51         return ::operator new(n); \
  52 }
  53
  54 #define DECL_FIXEDMEMPOOL_DEL_DECL() \
  55 static void operator delete( void * p, size_t n )
  56
  57 #define IMPL_FIXEDMEMPOOL_DEL_BODY( Class, aPool ) \
  58 { \
  59     if ( n == sizeof( Class ) ) \
  60         (aPool).Free(p); \
  61     else \
  62         ::operator delete(p); \
  63 }
  64
  65 #define DECL_FIXEDMEMPOOL_NEWDEL( Class ) \
  66     private: \
  67         static FixedMemPool aPool; \
  68     public: \
  69         DECL_FIXEDMEMPOOL_NEW_DECL() \
  70         IMPL_FIXEDMEMPOOL_NEW_BODY( Class, aPool ) \
  71         DECL_FIXEDMEMPOOL_DEL_DECL() \
  72         IMPL_FIXEDMEMPOOL_DEL_BODY( Class, aPool )
  73
  74 #define IMPL_FIXEDMEMPOOL_NEWDEL( Class ) \
  75     FixedMemPool Class::aPool( SAL_STRINGIFY( Class ), sizeof( Class ) );
  76
  77 #define DECL_FIXEDMEMPOOL_NEWDEL_DLL( Class ) \
  78     private: \
  79         static FixedMemPool aPool; \
  80     public: \
  81         DECL_FIXEDMEMPOOL_NEW_DECL(); \
  82         DECL_FIXEDMEMPOOL_DEL_DECL();
  83
  84 #define IMPL_FIXEDMEMPOOL_NEWDEL_DLL( Class ) \
  85     FixedMemPool Class::aPool( SAL_STRINGIFY( Class ), sizeof( Class ) ); \
  86     void * Class::operator new( size_t n ) \
  87     IMPL_FIXEDMEMPOOL_NEW_BODY( Class, aPool ) \
  88     void Class::operator delete( void * p, size_t n ) \
  89     IMPL_FIXEDMEMPOOL_DEL_BODY( Class, aPool )
  90
  91 #endif
  92
  93 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */