OgreMemoryNedAlloc.h

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00001 /*
00002 -----------------------------------------------------------------------------
00003 This source file is part of OGRE
00004 (Object-oriented Graphics Rendering Engine)
00005 For the latest info, see http://www.ogre3d.org/
00006 
00007 Copyright (c) 2000-2008 Torus Knot Software Ltd
00008 Also see acknowledgements in Readme.html
00009 
00010 This program is free software; you can redistribute it and/or modify it under
00011 the terms of the GNU Lesser General Public License as published by the Free Software
00012 Foundation; either version 2 of the License, or (at your option) any later
00013 version.
00014 
00015 This program is distributed in the hope that it will be useful, but WITHOUT
00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
00018 
00019 You should have received a copy of the GNU Lesser General Public License along with
00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
00022 http://www.gnu.org/copyleft/lesser.txt.
00023 
00024 You may alternatively use this source under the terms of a specific version of
00025 the OGRE Unrestricted License provided you have obtained such a license from
00026 Torus Knot Software Ltd.
00027 -----------------------------------------------------------------------------
00028 */
00029 
00030 #ifndef __MemoryNedAlloc_H__
00031 #define __MemoryNedAlloc_H__
00032 
00033 #include "OgreMemoryTracker.h"
00034 
00035 // This is an example of using a non-standard allocator with Ogre
00036 // Note, you need nedmalloc available on your build path to support this
00037 // See http://nedprod.com/programs/portable/nedmalloc/index.html
00038 
00039 #include <nedmalloc.h>
00040 
00041 namespace Ogre
00042 {
00043 
00052     class _OgreExport NedAllocPolicy
00053     {
00054     public:
00055         static inline void* allocateBytes(size_t count, 
00056             const char* file = 0, int line = 0, const char* func = 0)
00057         {
00058             void* ptr = nedalloc::nedmalloc(count);
00059 #if OGRE_MEMORY_TRACKER
00060             // this alloc policy doesn't do pools (yet, ned can do it)
00061             MemoryTracker::get()._recordAlloc(ptr, count, 0, file, line, func);
00062 #else
00063             // avoid unused params warning
00064             file;line;func;
00065 #endif
00066             return ptr;
00067         }
00068 
00069         static inline void deallocateBytes(void* ptr)
00070         {
00071 #if OGRE_MEMORY_TRACKER
00072             MemoryTracker::get()._recordDealloc(ptr);
00073 #endif
00074             nedalloc::nedfree(ptr);
00075         }
00076 
00078         static inline size_t getMaxAllocationSize()
00079         {
00080             return std::numeric_limits<size_t>::max();
00081         }
00082 
00083     private:
00084         // No instantiation
00085         NedAllocPolicy()
00086         { }
00087     };
00088 
00101     template <size_t Alignment = 0>
00102     class NedAlignedAllocPolicy
00103     {
00104     public:
00105         // compile-time check alignment is available.
00106         typedef int IsValidAlignment
00107             [Alignment <= 128 && ((Alignment & (Alignment-1)) == 0) ? +1 : -1];
00108 
00109         static inline void* allocateBytes(size_t count, 
00110             const char* file = 0, int line = 0, const char* func = 0)
00111         {
00112             // default to platform SIMD alignment if none specified
00113             void* ptr =  Alignment ? nedalloc::nedmemalign(Alignment, count)
00114                 : nedalloc::nedmemalign(OGRE_SIMD_ALIGNMENT, count);
00115 #if OGRE_MEMORY_TRACKER
00116             // this alloc policy doesn't do pools (yet, ned can do it)
00117             MemoryTracker::get()._recordAlloc(ptr, count, 0, file, line, func);
00118 #else
00119             // avoid unused params warning
00120             file;line;func;
00121 #endif
00122             return ptr;
00123         }
00124 
00125         static inline void deallocateBytes(void* ptr)
00126         {
00127 #if OGRE_MEMORY_TRACKER
00128             // this alloc policy doesn't do pools (yet, ned can do it)
00129             MemoryTracker::get()._recordDealloc(ptr);
00130 #endif
00131             nedalloc::nedfree(ptr);
00132         }
00133 
00135         static inline size_t getMaxAllocationSize()
00136         {
00137             return std::numeric_limits<size_t>::max();
00138         }
00139     private:
00140         // no instantiation allowed
00141         NedAlignedAllocPolicy()
00142         { }
00143     };
00144 
00145     // you might also want to declare policies based on ned's pooled allocators
00146     // if you want - that is lefts as an exercise for the user
00147 
00148 
00149 
00150 }// namespace Ogre
00151 #endif // __MemoryNedAlloc_H__

Copyright © 2008 Torus Knot Software Ltd
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Last modified Thu Aug 28 20:53:49 2008