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Member "heaplayers-351/heaplayers/addheap.h" (27 Aug 2003, 1531 Bytes) of package /linux/misc/old/heaplayers_3_5_1.tar.gz:


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    1 /* -*- C++ -*- */
    2 
    3 #ifndef _ADDHEAP_H_
    4 #define _ADDHEAP_H_
    5 
    6 /*
    7 
    8   Heap Layers: An Extensible Memory Allocation Infrastructure
    9   
   10   Copyright (C) 2000-2003 by Emery Berger
   11   http://www.cs.umass.edu/~emery
   12   emery@cs.umass.edu
   13   
   14   This program is free software; you can redistribute it and/or modify
   15   it under the terms of the GNU General Public License as published by
   16   the Free Software Foundation; either version 2 of the License, or
   17   (at your option) any later version.
   18   
   19   This program is distributed in the hope that it will be useful,
   20   but WITHOUT ANY WARRANTY; without even the implied warranty of
   21   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   22   GNU General Public License for more details.
   23   
   24   You should have received a copy of the GNU General Public License
   25   along with this program; if not, write to the Free Software
   26   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   27 
   28 */
   29 
   30 // Reserve space for a class in the head of every allocated object.
   31 
   32 #include <assert.h>
   33 
   34 namespace HL {
   35 
   36 template <class Add, class Super>
   37 class AddHeap : public Super {
   38 public:
   39   
   40   inline void * malloc (size_t sz) {
   41     void * ptr = Super::malloc (sz + align(sizeof(Add)));
   42     void * newPtr = (void *) align ((size_t) ((Add *) ptr + 1));
   43     return ptr;
   44   }
   45 
   46   inline void free (void * ptr) {
   47     void * origPtr = (void *) ((Add *) ptr - 1);
   48     Super::free (origPtr);
   49   }
   50   
   51 private:
   52     static inline size_t align (size_t sz) {
   53         return (sz + (sizeof(double) - 1)) & ~(sizeof(double) - 1);
   54     }
   55 
   56 };
   57 
   58 };
   59 #endif