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afebd7e1e5
Don't include the lazy precompiled.h everywhere, only what's required for the compilation unit. platform.h needs to be included instead to provide all essential defines and types. All includes use the relative path to the neo or the game specific root. Move all idlib related includes from idlib/Lib.h to precompiled.h. precompiled.h still exists for the MFC stuff in tools/. Add some missing header guards.
891 lines
26 KiB
C++
891 lines
26 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#ifndef __HEAP_H__
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#define __HEAP_H__
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#include "idlib/Lib.h"
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#include "sys/sys_public.h"
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/*
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===============================================================================
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Memory Management
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This is a replacement for the compiler heap code (i.e. "C" malloc() and
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free() calls). On average 2.5-3.0 times faster than MSVC malloc()/free().
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Worst case performance is 1.65 times faster and best case > 70 times.
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===============================================================================
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*/
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typedef struct {
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int num;
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int minSize;
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int maxSize;
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int totalSize;
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} memoryStats_t;
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void Mem_Init( void );
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void Mem_Shutdown( void );
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void Mem_EnableLeakTest( const char *name );
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void Mem_ClearFrameStats( void );
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void Mem_GetFrameStats( memoryStats_t &allocs, memoryStats_t &frees );
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void Mem_GetStats( memoryStats_t &stats );
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void Mem_Dump_f( const class idCmdArgs &args );
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void Mem_DumpCompressed_f( const class idCmdArgs &args );
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void Mem_AllocDefragBlock( void );
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#ifndef ID_DEBUG_MEMORY
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void * Mem_Alloc( const int size );
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void * Mem_ClearedAlloc( const int size );
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void Mem_Free( void *ptr );
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char * Mem_CopyString( const char *in );
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void * Mem_Alloc16( const int size );
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void Mem_Free16( void *ptr );
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#ifdef ID_REDIRECT_NEWDELETE
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__inline void *operator new( size_t s ) {
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return Mem_Alloc( s );
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}
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__inline void operator delete( void *p ) {
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Mem_Free( p );
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}
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__inline void *operator new[]( size_t s ) {
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return Mem_Alloc( s );
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}
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__inline void operator delete[]( void *p ) {
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Mem_Free( p );
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}
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#endif
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#else /* ID_DEBUG_MEMORY */
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void * Mem_Alloc( const int size, const char *fileName, const int lineNumber );
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void * Mem_ClearedAlloc( const int size, const char *fileName, const int lineNumber );
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void Mem_Free( void *ptr, const char *fileName, const int lineNumber );
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char * Mem_CopyString( const char *in, const char *fileName, const int lineNumber );
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void * Mem_Alloc16( const int size, const char *fileName, const int lineNumber );
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void Mem_Free16( void *ptr, const char *fileName, const int lineNumber );
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#ifdef ID_REDIRECT_NEWDELETE
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__inline void *operator new( size_t s, int t1, int t2, char *fileName, int lineNumber ) {
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return Mem_Alloc( s, fileName, lineNumber );
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}
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__inline void operator delete( void *p, int t1, int t2, char *fileName, int lineNumber ) {
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Mem_Free( p, fileName, lineNumber );
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}
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__inline void *operator new[]( size_t s, int t1, int t2, char *fileName, int lineNumber ) {
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return Mem_Alloc( s, fileName, lineNumber );
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}
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__inline void operator delete[]( void *p, int t1, int t2, char *fileName, int lineNumber ) {
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Mem_Free( p, fileName, lineNumber );
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}
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__inline void *operator new( size_t s ) {
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return Mem_Alloc( s, "", 0 );
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}
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__inline void operator delete( void *p ) {
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Mem_Free( p, "", 0 );
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}
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__inline void *operator new[]( size_t s ) {
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return Mem_Alloc( s, "", 0 );
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}
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__inline void operator delete[]( void *p ) {
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Mem_Free( p, "", 0 );
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}
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#define ID_DEBUG_NEW new( 0, 0, __FILE__, __LINE__ )
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#undef new
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#define new ID_DEBUG_NEW
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#endif
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#define Mem_Alloc( size ) Mem_Alloc( size, __FILE__, __LINE__ )
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#define Mem_ClearedAlloc( size ) Mem_ClearedAlloc( size, __FILE__, __LINE__ )
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#define Mem_Free( ptr ) Mem_Free( ptr, __FILE__, __LINE__ )
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#define Mem_CopyString( s ) Mem_CopyString( s, __FILE__, __LINE__ )
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#define Mem_Alloc16( size ) Mem_Alloc16( size, __FILE__, __LINE__ )
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#define Mem_Free16( ptr ) Mem_Free16( ptr, __FILE__, __LINE__ )
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#endif /* ID_DEBUG_MEMORY */
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/*
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===============================================================================
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Block based allocator for fixed size objects.
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All objects of the 'type' are properly constructed.
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However, the constructor is not called for re-used objects.
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===============================================================================
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*/
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template<class type, int blockSize>
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class idBlockAlloc {
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public:
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idBlockAlloc( void );
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~idBlockAlloc( void );
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void Shutdown( void );
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type * Alloc( void );
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void Free( type *element );
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int GetTotalCount( void ) const { return total; }
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int GetAllocCount( void ) const { return active; }
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int GetFreeCount( void ) const { return total - active; }
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private:
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typedef struct element_s {
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struct element_s * next;
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type t;
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} element_t;
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typedef struct block_s {
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element_t elements[blockSize];
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struct block_s * next;
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} block_t;
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block_t * blocks;
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element_t * free;
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int total;
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int active;
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};
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template<class type, int blockSize>
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idBlockAlloc<type,blockSize>::idBlockAlloc( void ) {
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blocks = NULL;
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free = NULL;
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total = active = 0;
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}
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template<class type, int blockSize>
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idBlockAlloc<type,blockSize>::~idBlockAlloc( void ) {
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Shutdown();
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}
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template<class type, int blockSize>
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type *idBlockAlloc<type,blockSize>::Alloc( void ) {
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if ( !free ) {
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block_t *block = new block_t;
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block->next = blocks;
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blocks = block;
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for ( int i = 0; i < blockSize; i++ ) {
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block->elements[i].next = free;
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free = &block->elements[i];
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}
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total += blockSize;
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}
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active++;
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element_t *element = free;
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free = free->next;
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element->next = NULL;
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return &element->t;
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}
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template<class type, int blockSize>
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void idBlockAlloc<type,blockSize>::Free( type *t ) {
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element_t *element = (element_t *)( intptr_t(t) - sizeof(intptr_t) );
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element->next = free;
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free = element;
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active--;
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}
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template<class type, int blockSize>
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void idBlockAlloc<type,blockSize>::Shutdown( void ) {
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while( blocks ) {
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block_t *block = blocks;
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blocks = blocks->next;
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delete block;
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}
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blocks = NULL;
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free = NULL;
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total = active = 0;
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}
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/*
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==============================================================================
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Dynamic allocator, simple wrapper for normal allocations which can
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be interchanged with idDynamicBlockAlloc.
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No constructor is called for the 'type'.
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Allocated blocks are always 16 byte aligned.
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==============================================================================
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*/
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template<class type, int baseBlockSize, int minBlockSize>
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class idDynamicAlloc {
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public:
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idDynamicAlloc( void );
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~idDynamicAlloc( void );
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void Init( void );
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void Shutdown( void );
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void SetFixedBlocks( int numBlocks ) {}
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void SetLockMemory( bool lock ) {}
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void FreeEmptyBaseBlocks( void ) {}
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type * Alloc( const int num );
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type * Resize( type *ptr, const int num );
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void Free( type *ptr );
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const char * CheckMemory( const type *ptr ) const;
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int GetNumBaseBlocks( void ) const { return 0; }
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int GetBaseBlockMemory( void ) const { return 0; }
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int GetNumUsedBlocks( void ) const { return numUsedBlocks; }
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int GetUsedBlockMemory( void ) const { return usedBlockMemory; }
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int GetNumFreeBlocks( void ) const { return 0; }
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int GetFreeBlockMemory( void ) const { return 0; }
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int GetNumEmptyBaseBlocks( void ) const { return 0; }
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private:
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int numUsedBlocks; // number of used blocks
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int usedBlockMemory; // total memory in used blocks
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int numAllocs;
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int numResizes;
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int numFrees;
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void Clear( void );
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};
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template<class type, int baseBlockSize, int minBlockSize>
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idDynamicAlloc<type, baseBlockSize, minBlockSize>::idDynamicAlloc( void ) {
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Clear();
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}
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template<class type, int baseBlockSize, int minBlockSize>
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idDynamicAlloc<type, baseBlockSize, minBlockSize>::~idDynamicAlloc( void ) {
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Shutdown();
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}
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template<class type, int baseBlockSize, int minBlockSize>
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void idDynamicAlloc<type, baseBlockSize, minBlockSize>::Init( void ) {
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}
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template<class type, int baseBlockSize, int minBlockSize>
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void idDynamicAlloc<type, baseBlockSize, minBlockSize>::Shutdown( void ) {
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Clear();
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}
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template<class type, int baseBlockSize, int minBlockSize>
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type *idDynamicAlloc<type, baseBlockSize, minBlockSize>::Alloc( const int num ) {
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numAllocs++;
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if ( num <= 0 ) {
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return NULL;
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}
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numUsedBlocks++;
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usedBlockMemory += num * sizeof( type );
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return Mem_Alloc16( num * sizeof( type ) );
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}
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template<class type, int baseBlockSize, int minBlockSize>
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type *idDynamicAlloc<type, baseBlockSize, minBlockSize>::Resize( type *ptr, const int num ) {
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numResizes++;
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if ( ptr == NULL ) {
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return Alloc( num );
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}
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if ( num <= 0 ) {
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Free( ptr );
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return NULL;
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}
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assert( 0 );
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return ptr;
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}
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template<class type, int baseBlockSize, int minBlockSize>
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void idDynamicAlloc<type, baseBlockSize, minBlockSize>::Free( type *ptr ) {
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numFrees++;
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if ( ptr == NULL ) {
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return;
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}
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Mem_Free16( ptr );
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}
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template<class type, int baseBlockSize, int minBlockSize>
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const char *idDynamicAlloc<type, baseBlockSize, minBlockSize>::CheckMemory( const type *ptr ) const {
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return NULL;
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}
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template<class type, int baseBlockSize, int minBlockSize>
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void idDynamicAlloc<type, baseBlockSize, minBlockSize>::Clear( void ) {
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numUsedBlocks = 0;
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usedBlockMemory = 0;
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numAllocs = 0;
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numResizes = 0;
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numFrees = 0;
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}
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/*
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==============================================================================
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Fast dynamic block allocator.
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No constructor is called for the 'type'.
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Allocated blocks are always 16 byte aligned.
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==============================================================================
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*/
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#include "containers/BTree.h"
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//#define DYNAMIC_BLOCK_ALLOC_CHECK
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template<class type>
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class idDynamicBlock {
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public:
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type * GetMemory( void ) const { return (type *)( ( (byte *) this ) + sizeof( idDynamicBlock<type> ) ); }
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int GetSize( void ) const { return abs( size ); }
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void SetSize( int s, bool isBaseBlock ) { size = isBaseBlock ? -s : s; }
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bool IsBaseBlock( void ) const { return ( size < 0 ); }
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#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
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int id[3];
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void * allocator;
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#endif
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int size; // size in bytes of the block
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idDynamicBlock<type> * prev; // previous memory block
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idDynamicBlock<type> * next; // next memory block
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idBTreeNode<idDynamicBlock<type>,int> *node; // node in the B-Tree with free blocks
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};
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template<class type, int baseBlockSize, int minBlockSize>
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class idDynamicBlockAlloc {
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public:
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idDynamicBlockAlloc( void );
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~idDynamicBlockAlloc( void );
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void Init( void );
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void Shutdown( void );
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void SetFixedBlocks( int numBlocks );
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void SetLockMemory( bool lock );
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void FreeEmptyBaseBlocks( void );
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type * Alloc( const int num );
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type * Resize( type *ptr, const int num );
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void Free( type *ptr );
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const char * CheckMemory( const type *ptr ) const;
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int GetNumBaseBlocks( void ) const { return numBaseBlocks; }
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int GetBaseBlockMemory( void ) const { return baseBlockMemory; }
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int GetNumUsedBlocks( void ) const { return numUsedBlocks; }
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int GetUsedBlockMemory( void ) const { return usedBlockMemory; }
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int GetNumFreeBlocks( void ) const { return numFreeBlocks; }
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int GetFreeBlockMemory( void ) const { return freeBlockMemory; }
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int GetNumEmptyBaseBlocks( void ) const;
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private:
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idDynamicBlock<type> * firstBlock; // first block in list in order of increasing address
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idDynamicBlock<type> * lastBlock; // last block in list in order of increasing address
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idBTree<idDynamicBlock<type>,int,4>freeTree; // B-Tree with free memory blocks
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bool allowAllocs; // allow base block allocations
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bool lockMemory; // lock memory so it cannot get swapped out
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#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
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int blockId[3];
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#endif
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int numBaseBlocks; // number of base blocks
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int baseBlockMemory; // total memory in base blocks
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int numUsedBlocks; // number of used blocks
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int usedBlockMemory; // total memory in used blocks
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int numFreeBlocks; // number of free blocks
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int freeBlockMemory; // total memory in free blocks
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int numAllocs;
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int numResizes;
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int numFrees;
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void Clear( void );
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idDynamicBlock<type> * AllocInternal( const int num );
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idDynamicBlock<type> * ResizeInternal( idDynamicBlock<type> *block, const int num );
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void FreeInternal( idDynamicBlock<type> *block );
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void LinkFreeInternal( idDynamicBlock<type> *block );
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void UnlinkFreeInternal( idDynamicBlock<type> *block );
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void CheckMemory( void ) const;
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};
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template<class type, int baseBlockSize, int minBlockSize>
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idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::idDynamicBlockAlloc( void ) {
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Clear();
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}
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template<class type, int baseBlockSize, int minBlockSize>
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idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::~idDynamicBlockAlloc( void ) {
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Shutdown();
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}
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template<class type, int baseBlockSize, int minBlockSize>
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void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::Init( void ) {
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freeTree.Init();
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}
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template<class type, int baseBlockSize, int minBlockSize>
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void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::Shutdown( void ) {
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idDynamicBlock<type> *block;
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for ( block = firstBlock; block != NULL; block = block->next ) {
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if ( block->node == NULL ) {
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FreeInternal( block );
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}
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}
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for ( block = firstBlock; block != NULL; block = firstBlock ) {
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firstBlock = block->next;
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assert( block->IsBaseBlock() );
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if ( lockMemory ) {
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idLib::sys->UnlockMemory( block, block->GetSize() + (int)sizeof( idDynamicBlock<type> ) );
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}
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Mem_Free16( block );
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}
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freeTree.Shutdown();
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Clear();
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}
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template<class type, int baseBlockSize, int minBlockSize>
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void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::SetFixedBlocks( int numBlocks ) {
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idDynamicBlock<type> *block;
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for ( int i = numBaseBlocks; i < numBlocks; i++ ) {
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block = ( idDynamicBlock<type> * ) Mem_Alloc16( baseBlockSize );
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if ( lockMemory ) {
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idLib::sys->LockMemory( block, baseBlockSize );
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}
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#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
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memcpy( block->id, blockId, sizeof( block->id ) );
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block->allocator = (void*)this;
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#endif
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block->SetSize( baseBlockSize - (int)sizeof( idDynamicBlock<type> ), true );
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block->next = NULL;
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block->prev = lastBlock;
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if ( lastBlock ) {
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lastBlock->next = block;
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} else {
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firstBlock = block;
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}
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lastBlock = block;
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block->node = NULL;
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FreeInternal( block );
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numBaseBlocks++;
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baseBlockMemory += baseBlockSize;
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}
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allowAllocs = false;
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}
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template<class type, int baseBlockSize, int minBlockSize>
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void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::SetLockMemory( bool lock ) {
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lockMemory = lock;
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}
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template<class type, int baseBlockSize, int minBlockSize>
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void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::FreeEmptyBaseBlocks( void ) {
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idDynamicBlock<type> *block, *next;
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for ( block = firstBlock; block != NULL; block = next ) {
|
|
next = block->next;
|
|
|
|
if ( block->IsBaseBlock() && block->node != NULL && ( next == NULL || next->IsBaseBlock() ) ) {
|
|
UnlinkFreeInternal( block );
|
|
if ( block->prev ) {
|
|
block->prev->next = block->next;
|
|
} else {
|
|
firstBlock = block->next;
|
|
}
|
|
if ( block->next ) {
|
|
block->next->prev = block->prev;
|
|
} else {
|
|
lastBlock = block->prev;
|
|
}
|
|
if ( lockMemory ) {
|
|
idLib::sys->UnlockMemory( block, block->GetSize() + (int)sizeof( idDynamicBlock<type> ) );
|
|
}
|
|
numBaseBlocks--;
|
|
baseBlockMemory -= block->GetSize() + (int)sizeof( idDynamicBlock<type> );
|
|
Mem_Free16( block );
|
|
}
|
|
}
|
|
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
CheckMemory();
|
|
#endif
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
int idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::GetNumEmptyBaseBlocks( void ) const {
|
|
int numEmptyBaseBlocks;
|
|
idDynamicBlock<type> *block;
|
|
|
|
numEmptyBaseBlocks = 0;
|
|
for ( block = firstBlock; block != NULL; block = block->next ) {
|
|
if ( block->IsBaseBlock() && block->node != NULL && ( block->next == NULL || block->next->IsBaseBlock() ) ) {
|
|
numEmptyBaseBlocks++;
|
|
}
|
|
}
|
|
return numEmptyBaseBlocks;
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
type *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::Alloc( const int num ) {
|
|
idDynamicBlock<type> *block;
|
|
|
|
numAllocs++;
|
|
|
|
if ( num <= 0 ) {
|
|
return NULL;
|
|
}
|
|
|
|
block = AllocInternal( num );
|
|
if ( block == NULL ) {
|
|
return NULL;
|
|
}
|
|
block = ResizeInternal( block, num );
|
|
if ( block == NULL ) {
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
CheckMemory();
|
|
#endif
|
|
|
|
numUsedBlocks++;
|
|
usedBlockMemory += block->GetSize();
|
|
|
|
return block->GetMemory();
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
type *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::Resize( type *ptr, const int num ) {
|
|
|
|
numResizes++;
|
|
|
|
if ( ptr == NULL ) {
|
|
return Alloc( num );
|
|
}
|
|
|
|
if ( num <= 0 ) {
|
|
Free( ptr );
|
|
return NULL;
|
|
}
|
|
|
|
idDynamicBlock<type> *block = ( idDynamicBlock<type> * ) ( ( (byte *) ptr ) - (int)sizeof( idDynamicBlock<type> ) );
|
|
|
|
usedBlockMemory -= block->GetSize();
|
|
|
|
block = ResizeInternal( block, num );
|
|
if ( block == NULL ) {
|
|
return NULL;
|
|
}
|
|
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
CheckMemory();
|
|
#endif
|
|
|
|
usedBlockMemory += block->GetSize();
|
|
|
|
return block->GetMemory();
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::Free( type *ptr ) {
|
|
|
|
numFrees++;
|
|
|
|
if ( ptr == NULL ) {
|
|
return;
|
|
}
|
|
|
|
idDynamicBlock<type> *block = ( idDynamicBlock<type> * ) ( ( (byte *) ptr ) - (int)sizeof( idDynamicBlock<type> ) );
|
|
|
|
numUsedBlocks--;
|
|
usedBlockMemory -= block->GetSize();
|
|
|
|
FreeInternal( block );
|
|
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
CheckMemory();
|
|
#endif
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
const char *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::CheckMemory( const type *ptr ) const {
|
|
idDynamicBlock<type> *block;
|
|
|
|
if ( ptr == NULL ) {
|
|
return NULL;
|
|
}
|
|
|
|
block = ( idDynamicBlock<type> * ) ( ( (byte *) ptr ) - (int)sizeof( idDynamicBlock<type> ) );
|
|
|
|
if ( block->node != NULL ) {
|
|
return "memory has been freed";
|
|
}
|
|
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
if ( block->id[0] != 0x11111111 || block->id[1] != 0x22222222 || block->id[2] != 0x33333333 ) {
|
|
return "memory has invalid id";
|
|
}
|
|
if ( block->allocator != (void*)this ) {
|
|
return "memory was allocated with different allocator";
|
|
}
|
|
#endif
|
|
|
|
/* base blocks can be larger than baseBlockSize which can cause this code to fail
|
|
idDynamicBlock<type> *base;
|
|
for ( base = firstBlock; base != NULL; base = base->next ) {
|
|
if ( base->IsBaseBlock() ) {
|
|
if ( ((int)block) >= ((int)base) && ((int)block) < ((int)base) + baseBlockSize ) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if ( base == NULL ) {
|
|
return "no base block found for memory";
|
|
}
|
|
*/
|
|
|
|
return NULL;
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::Clear( void ) {
|
|
firstBlock = lastBlock = NULL;
|
|
allowAllocs = true;
|
|
lockMemory = false;
|
|
numBaseBlocks = 0;
|
|
baseBlockMemory = 0;
|
|
numUsedBlocks = 0;
|
|
usedBlockMemory = 0;
|
|
numFreeBlocks = 0;
|
|
freeBlockMemory = 0;
|
|
numAllocs = 0;
|
|
numResizes = 0;
|
|
numFrees = 0;
|
|
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
blockId[0] = 0x11111111;
|
|
blockId[1] = 0x22222222;
|
|
blockId[2] = 0x33333333;
|
|
#endif
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
idDynamicBlock<type> *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::AllocInternal( const int num ) {
|
|
idDynamicBlock<type> *block;
|
|
int alignedBytes = ( num * sizeof( type ) + 15 ) & ~15;
|
|
|
|
block = freeTree.FindSmallestLargerEqual( alignedBytes );
|
|
if ( block != NULL ) {
|
|
UnlinkFreeInternal( block );
|
|
} else if ( allowAllocs ) {
|
|
int allocSize = Max( baseBlockSize, alignedBytes + (int)sizeof( idDynamicBlock<type> ) );
|
|
block = ( idDynamicBlock<type> * ) Mem_Alloc16( allocSize );
|
|
if ( lockMemory ) {
|
|
idLib::sys->LockMemory( block, baseBlockSize );
|
|
}
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
memcpy( block->id, blockId, sizeof( block->id ) );
|
|
block->allocator = (void*)this;
|
|
#endif
|
|
block->SetSize( allocSize - (int)sizeof( idDynamicBlock<type> ), true );
|
|
block->next = NULL;
|
|
block->prev = lastBlock;
|
|
if ( lastBlock ) {
|
|
lastBlock->next = block;
|
|
} else {
|
|
firstBlock = block;
|
|
}
|
|
lastBlock = block;
|
|
block->node = NULL;
|
|
|
|
numBaseBlocks++;
|
|
baseBlockMemory += allocSize;
|
|
}
|
|
|
|
return block;
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
idDynamicBlock<type> *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::ResizeInternal( idDynamicBlock<type> *block, const int num ) {
|
|
int alignedBytes = ( num * sizeof( type ) + 15 ) & ~15;
|
|
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
assert( block->id[0] == 0x11111111 && block->id[1] == 0x22222222 && block->id[2] == 0x33333333 && block->allocator == (void*)this );
|
|
#endif
|
|
|
|
// if the new size is larger
|
|
if ( alignedBytes > block->GetSize() ) {
|
|
|
|
idDynamicBlock<type> *nextBlock = block->next;
|
|
|
|
// try to annexate the next block if it's free
|
|
if ( nextBlock && !nextBlock->IsBaseBlock() && nextBlock->node != NULL &&
|
|
block->GetSize() + (int)sizeof( idDynamicBlock<type> ) + nextBlock->GetSize() >= alignedBytes ) {
|
|
|
|
UnlinkFreeInternal( nextBlock );
|
|
block->SetSize( block->GetSize() + (int)sizeof( idDynamicBlock<type> ) + nextBlock->GetSize(), block->IsBaseBlock() );
|
|
block->next = nextBlock->next;
|
|
if ( nextBlock->next ) {
|
|
nextBlock->next->prev = block;
|
|
} else {
|
|
lastBlock = block;
|
|
}
|
|
} else {
|
|
// allocate a new block and copy
|
|
idDynamicBlock<type> *oldBlock = block;
|
|
block = AllocInternal( num );
|
|
if ( block == NULL ) {
|
|
return NULL;
|
|
}
|
|
memcpy( block->GetMemory(), oldBlock->GetMemory(), oldBlock->GetSize() );
|
|
FreeInternal( oldBlock );
|
|
}
|
|
}
|
|
|
|
// if the unused space at the end of this block is large enough to hold a block with at least one element
|
|
if ( block->GetSize() - alignedBytes - (int)sizeof( idDynamicBlock<type> ) < Max( minBlockSize, (int)sizeof( type ) ) ) {
|
|
return block;
|
|
}
|
|
|
|
idDynamicBlock<type> *newBlock;
|
|
|
|
newBlock = ( idDynamicBlock<type> * ) ( ( (byte *) block ) + (int)sizeof( idDynamicBlock<type> ) + alignedBytes );
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
memcpy( newBlock->id, blockId, sizeof( newBlock->id ) );
|
|
newBlock->allocator = (void*)this;
|
|
#endif
|
|
newBlock->SetSize( block->GetSize() - alignedBytes - (int)sizeof( idDynamicBlock<type> ), false );
|
|
newBlock->next = block->next;
|
|
newBlock->prev = block;
|
|
if ( newBlock->next ) {
|
|
newBlock->next->prev = newBlock;
|
|
} else {
|
|
lastBlock = newBlock;
|
|
}
|
|
newBlock->node = NULL;
|
|
block->next = newBlock;
|
|
block->SetSize( alignedBytes, block->IsBaseBlock() );
|
|
|
|
FreeInternal( newBlock );
|
|
|
|
return block;
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::FreeInternal( idDynamicBlock<type> *block ) {
|
|
|
|
assert( block->node == NULL );
|
|
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
|
assert( block->id[0] == 0x11111111 && block->id[1] == 0x22222222 && block->id[2] == 0x33333333 && block->allocator == (void*)this );
|
|
#endif
|
|
|
|
// try to merge with a next free block
|
|
idDynamicBlock<type> *nextBlock = block->next;
|
|
if ( nextBlock && !nextBlock->IsBaseBlock() && nextBlock->node != NULL ) {
|
|
UnlinkFreeInternal( nextBlock );
|
|
block->SetSize( block->GetSize() + (int)sizeof( idDynamicBlock<type> ) + nextBlock->GetSize(), block->IsBaseBlock() );
|
|
block->next = nextBlock->next;
|
|
if ( nextBlock->next ) {
|
|
nextBlock->next->prev = block;
|
|
} else {
|
|
lastBlock = block;
|
|
}
|
|
}
|
|
|
|
// try to merge with a previous free block
|
|
idDynamicBlock<type> *prevBlock = block->prev;
|
|
if ( prevBlock && !block->IsBaseBlock() && prevBlock->node != NULL ) {
|
|
UnlinkFreeInternal( prevBlock );
|
|
prevBlock->SetSize( prevBlock->GetSize() + (int)sizeof( idDynamicBlock<type> ) + block->GetSize(), prevBlock->IsBaseBlock() );
|
|
prevBlock->next = block->next;
|
|
if ( block->next ) {
|
|
block->next->prev = prevBlock;
|
|
} else {
|
|
lastBlock = prevBlock;
|
|
}
|
|
LinkFreeInternal( prevBlock );
|
|
} else {
|
|
LinkFreeInternal( block );
|
|
}
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
ID_INLINE void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::LinkFreeInternal( idDynamicBlock<type> *block ) {
|
|
block->node = freeTree.Add( block, block->GetSize() );
|
|
numFreeBlocks++;
|
|
freeBlockMemory += block->GetSize();
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
ID_INLINE void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::UnlinkFreeInternal( idDynamicBlock<type> *block ) {
|
|
freeTree.Remove( block->node );
|
|
block->node = NULL;
|
|
numFreeBlocks--;
|
|
freeBlockMemory -= block->GetSize();
|
|
}
|
|
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize>::CheckMemory( void ) const {
|
|
idDynamicBlock<type> *block;
|
|
|
|
for ( block = firstBlock; block != NULL; block = block->next ) {
|
|
// make sure the block is properly linked
|
|
if ( block->prev == NULL ) {
|
|
assert( firstBlock == block );
|
|
} else {
|
|
assert( block->prev->next == block );
|
|
}
|
|
if ( block->next == NULL ) {
|
|
assert( lastBlock == block );
|
|
} else {
|
|
assert( block->next->prev == block );
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif /* !__HEAP_H__ */
|