mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2024-11-28 23:02:14 +00:00
1080 lines
31 KiB
C
1080 lines
31 KiB
C
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/*
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===========================================================================
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Doom 3 BFG Edition GPL Source Code
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Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
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Doom 3 BFG Edition 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 BFG Edition 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 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 BFG Edition 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 BFG Edition 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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/*
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===============================================================================
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Memory Management
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===============================================================================
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*/
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// memory tag names are used to sort allocations for sys_dumpMemory and other reporting functions
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enum memTag_t {
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#define MEM_TAG( x ) TAG_##x,
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#include "sys/sys_alloc_tags.h"
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TAG_NUM_TAGS,
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};
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static const int MAX_TAGS = 256;
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void * Mem_Alloc16( const int size, const memTag_t tag );
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void Mem_Free16( void *ptr );
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ID_INLINE void * Mem_Alloc( const int size, const memTag_t tag ) { return Mem_Alloc16( size, tag ); }
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ID_INLINE void Mem_Free( void *ptr ) { Mem_Free16( ptr ); }
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void * Mem_ClearedAlloc( const int size, const memTag_t tag );
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char * Mem_CopyString( const char *in );
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ID_INLINE void *operator new( size_t s ) {
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return Mem_Alloc( s, TAG_NEW );
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}
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ID_INLINE void operator delete( void *p ) {
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Mem_Free( p );
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}
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ID_INLINE void *operator new[]( size_t s ) {
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return Mem_Alloc( s, TAG_NEW );
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}
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ID_INLINE void operator delete[]( void *p ) {
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Mem_Free( p );
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}
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ID_INLINE void *operator new( size_t s, memTag_t tag ) {
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return Mem_Alloc( s, tag );
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}
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ID_INLINE void operator delete( void *p, memTag_t tag ) {
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Mem_Free( p );
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}
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ID_INLINE void *operator new[]( size_t s, memTag_t tag ) {
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return Mem_Alloc( s, tag );
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}
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ID_INLINE void operator delete[]( void *p, memTag_t tag ) {
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Mem_Free( p );
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}
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// Define replacements for the PS3 library's aligned new operator.
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// Without these, allocations of objects with 32 byte or greater alignment
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// may not go through our memory system.
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/*
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================================================
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idTempArray is an array that is automatically free'd when it goes out of scope.
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There is no "cast" operator because these are very unsafe.
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The template parameter MUST BE POD!
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Compile time asserting POD-ness of the template parameter is complicated due
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to our vector classes that need a default constructor but are otherwise
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considered POD.
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================================================
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*/
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template < class T >
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class idTempArray {
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public:
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idTempArray( idTempArray<T> & other );
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idTempArray( unsigned int num );
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~idTempArray();
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T & operator []( unsigned int i ) { assert( i < num ); return buffer[i]; }
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const T & operator []( unsigned int i ) const { assert( i < num ); return buffer[i]; }
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T * Ptr() { return buffer; }
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const T* Ptr() const { return buffer; }
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size_t Size( ) const { return num * sizeof( T ); }
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unsigned int Num( ) const { return num; }
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void Zero() { memset( Ptr(), 0, Size() ); }
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private:
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T * buffer; // Ensure this buffer comes first, so this == &this->buffer
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unsigned int num;
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};
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/*
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========================
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idTempArray::idTempArray
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========================
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*/
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template < class T >
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ID_INLINE idTempArray<T>::idTempArray( idTempArray<T> & other ) {
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this->num = other.num;
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this->buffer = other.buffer;
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other.num = 0;
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other.buffer = NULL;
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}
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/*
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========================
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idTempArray::idTempArray
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========================
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*/
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template < class T >
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ID_INLINE idTempArray<T>::idTempArray( unsigned int num ) {
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this->num = num;
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buffer = (T*)Mem_Alloc( num * sizeof( T ), TAG_TEMP );
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}
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/*
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========================
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idTempArray::~idTempArray
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========================
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*/
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template < class T >
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ID_INLINE idTempArray<T>::~idTempArray() {
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Mem_Free( buffer );
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}
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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 and destructed when reused.
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===============================================================================
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*/
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#define BLOCK_ALLOC_ALIGNMENT 16
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// Define this to force all block allocators to act like normal new/delete allocation
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// for tool checking.
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//#define FORCE_DISCRETE_BLOCK_ALLOCS
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/*
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================================================
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idBlockAlloc is a block-based allocator for fixed-size objects.
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All objects are properly constructed and destructed.
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================================================
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*/
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template<class _type_, int _blockSize_, memTag_t memTag = TAG_BLOCKALLOC>
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class idBlockAlloc {
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public:
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ID_INLINE idBlockAlloc( bool clear = false );
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ID_INLINE ~idBlockAlloc();
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// returns total size of allocated memory
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size_t Allocated() const { return total * sizeof( _type_ ); }
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// returns total size of allocated memory including size of (*this)
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size_t Size() const { return sizeof( *this ) + Allocated(); }
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ID_INLINE void Shutdown();
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ID_INLINE void SetFixedBlocks( int numBlocks );
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ID_INLINE void FreeEmptyBlocks();
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ID_INLINE _type_ * Alloc();
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ID_INLINE void Free( _type_ *element );
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int GetTotalCount() const { return total; }
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int GetAllocCount() const { return active; }
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int GetFreeCount() const { return total - active; }
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private:
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union element_t {
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_type_ * data; // this is a hack to make sure the save game system marks _type_ as saveable
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element_t * next;
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byte buffer[( CONST_MAX( sizeof( _type_ ), sizeof( element_t * ) ) + ( BLOCK_ALLOC_ALIGNMENT - 1 ) ) & ~( BLOCK_ALLOC_ALIGNMENT - 1 )];
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};
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class idBlock {
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public:
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element_t elements[_blockSize_];
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idBlock * next;
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element_t * free; // list with free elements in this block (temp used only by FreeEmptyBlocks)
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int freeCount; // number of free elements in this block (temp used only by FreeEmptyBlocks)
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};
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idBlock * blocks;
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element_t * free;
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int total;
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int active;
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bool allowAllocs;
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bool clearAllocs;
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ID_INLINE void AllocNewBlock();
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};
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/*
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========================
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idBlockAlloc<_type_,_blockSize_,align_t>::idBlockAlloc
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========================
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*/
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template<class _type_, int _blockSize_, memTag_t memTag>
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ID_INLINE idBlockAlloc<_type_,_blockSize_,memTag>::idBlockAlloc( bool clear ) :
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blocks( NULL ),
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free( NULL ),
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total( 0 ),
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active( 0 ),
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allowAllocs( true ),
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clearAllocs( clear )
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{
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}
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/*
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========================
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idBlockAlloc<_type_,_blockSize__,align_t>::~idBlockAlloc
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========================
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*/
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template<class _type_, int _blockSize_, memTag_t memTag>
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ID_INLINE idBlockAlloc<_type_,_blockSize_,memTag>::~idBlockAlloc() {
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Shutdown();
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}
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/*
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========================
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idBlockAlloc<_type_,_blockSize_,align_t>::Alloc
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========================
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*/
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template<class _type_, int _blockSize_, memTag_t memTag>
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ID_INLINE _type_ * idBlockAlloc<_type_,_blockSize_,memTag>::Alloc() {
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#ifdef FORCE_DISCRETE_BLOCK_ALLOCS
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// for debugging tools
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return new _type_;
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#else
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if ( free == NULL ) {
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if ( !allowAllocs ) {
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return NULL;
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}
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AllocNewBlock();
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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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_type_ * t = (_type_ *) element->buffer;
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if ( clearAllocs ) {
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memset( t, 0, sizeof( _type_ ) );
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}
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new ( t ) _type_;
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return t;
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#endif
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}
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/*
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========================
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idBlockAlloc<_type_,_blockSize_,align_t>::Free
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========================
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*/
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template<class _type_, int _blockSize_, memTag_t memTag>
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ID_INLINE void idBlockAlloc<_type_,_blockSize_,memTag>::Free( _type_ * t ) {
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#ifdef FORCE_DISCRETE_BLOCK_ALLOCS
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// for debugging tools
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delete t;
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#else
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if ( t == NULL ) {
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return;
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}
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t->~_type_();
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element_t * element = (element_t *)( t );
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element->next = free;
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free = element;
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active--;
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#endif
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}
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/*
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========================
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idBlockAlloc<_type_,_blockSize_,align_t>::Shutdown
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========================
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*/
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template<class _type_, int _blockSize_, memTag_t memTag>
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ID_INLINE void idBlockAlloc<_type_,_blockSize_,memTag>::Shutdown() {
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while( blocks != NULL ) {
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idBlock * block = blocks;
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blocks = blocks->next;
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Mem_Free( 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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idBlockAlloc<_type_,_blockSize_,align_t>::SetFixedBlocks
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========================
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*/
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template<class _type_, int _blockSize_, memTag_t memTag>
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ID_INLINE void idBlockAlloc<_type_,_blockSize_,memTag>::SetFixedBlocks( int numBlocks ) {
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int currentNumBlocks = 0;
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for ( idBlock * block = blocks; block != NULL; block = block->next ) {
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currentNumBlocks++;
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}
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for ( int i = currentNumBlocks; i < numBlocks; i++ ) {
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AllocNewBlock();
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}
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allowAllocs = false;
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}
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/*
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========================
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idBlockAlloc<_type_,_blockSize_,align_t>::AllocNewBlock
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========================
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*/
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template<class _type_, int _blockSize_, memTag_t memTag>
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ID_INLINE void idBlockAlloc<_type_,_blockSize_,memTag>::AllocNewBlock() {
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idBlock * block = (idBlock *)Mem_Alloc( sizeof( idBlock ), memTag );
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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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assert( ( ( (UINT_PTR)free ) & ( BLOCK_ALLOC_ALIGNMENT - 1 ) ) == 0 );
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}
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total += _blockSize_;
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}
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/*
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||
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========================
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idBlockAlloc<_type_,_blockSize_,align_t>::FreeEmptyBlocks
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========================
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*/
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template<class _type_, int _blockSize_, memTag_t memTag>
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ID_INLINE void idBlockAlloc<_type_,_blockSize_,memTag>::FreeEmptyBlocks() {
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// first count how many free elements are in each block
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// and build up a free chain per block
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for ( idBlock * block = blocks; block != NULL; block = block->next ) {
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block->free = NULL;
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block->freeCount = 0;
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}
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for ( element_t * element = free; element != NULL; ) {
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element_t * next = element->next;
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for ( idBlock * block = blocks; block != NULL; block = block->next ) {
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if ( element >= block->elements && element < block->elements + _blockSize_ ) {
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element->next = block->free;
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block->free = element;
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block->freeCount++;
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break;
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}
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}
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// if this assert fires, we couldn't find the element in any block
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||
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assert( element->next != next );
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element = next;
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}
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|
|
// now free all blocks whose free count == _blockSize_
|
||
|
|
idBlock * prevBlock = NULL;
|
||
|
|
for ( idBlock * block = blocks; block != NULL; ) {
|
||
|
|
idBlock * next = block->next;
|
||
|
|
if ( block->freeCount == _blockSize_ ) {
|
||
|
|
if ( prevBlock == NULL ) {
|
||
|
|
assert( blocks == block );
|
||
|
|
blocks = block->next;
|
||
|
|
} else {
|
||
|
|
assert( prevBlock->next == block );
|
||
|
|
prevBlock->next = block->next;
|
||
|
|
}
|
||
|
|
Mem_Free( block );
|
||
|
|
total -= _blockSize_;
|
||
|
|
} else {
|
||
|
|
prevBlock = block;
|
||
|
|
}
|
||
|
|
block = next;
|
||
|
|
}
|
||
|
|
// now rebuild the free chain
|
||
|
|
free = NULL;
|
||
|
|
for ( idBlock * block = blocks; block != NULL; block = block->next ) {
|
||
|
|
for ( element_t * element = block->free; element != NULL; ) {
|
||
|
|
element_t * next = element->next;
|
||
|
|
element->next = free;
|
||
|
|
free = element;
|
||
|
|
element = next;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
==============================================================================
|
||
|
|
|
||
|
|
Dynamic allocator, simple wrapper for normal allocations which can
|
||
|
|
be interchanged with idDynamicBlockAlloc.
|
||
|
|
|
||
|
|
No constructor is called for the 'type'.
|
||
|
|
Allocated blocks are always 16 byte aligned.
|
||
|
|
|
||
|
|
==============================================================================
|
||
|
|
*/
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
class idDynamicAlloc {
|
||
|
|
public:
|
||
|
|
idDynamicAlloc();
|
||
|
|
~idDynamicAlloc();
|
||
|
|
|
||
|
|
void Init();
|
||
|
|
void Shutdown();
|
||
|
|
void SetFixedBlocks( int numBlocks ) {}
|
||
|
|
void SetLockMemory( bool lock ) {}
|
||
|
|
void FreeEmptyBaseBlocks() {}
|
||
|
|
|
||
|
|
type * Alloc( const int num );
|
||
|
|
type * Resize( type *ptr, const int num );
|
||
|
|
void Free( type *ptr );
|
||
|
|
const char * CheckMemory( const type *ptr ) const;
|
||
|
|
|
||
|
|
int GetNumBaseBlocks() const { return 0; }
|
||
|
|
int GetBaseBlockMemory() const { return 0; }
|
||
|
|
int GetNumUsedBlocks() const { return numUsedBlocks; }
|
||
|
|
int GetUsedBlockMemory() const { return usedBlockMemory; }
|
||
|
|
int GetNumFreeBlocks() const { return 0; }
|
||
|
|
int GetFreeBlockMemory() const { return 0; }
|
||
|
|
int GetNumEmptyBaseBlocks() const { return 0; }
|
||
|
|
|
||
|
|
private:
|
||
|
|
int numUsedBlocks; // number of used blocks
|
||
|
|
int usedBlockMemory; // total memory in used blocks
|
||
|
|
|
||
|
|
int numAllocs;
|
||
|
|
int numResizes;
|
||
|
|
int numFrees;
|
||
|
|
|
||
|
|
void Clear();
|
||
|
|
};
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
idDynamicAlloc<type, baseBlockSize, minBlockSize>::idDynamicAlloc() {
|
||
|
|
Clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
idDynamicAlloc<type, baseBlockSize, minBlockSize>::~idDynamicAlloc() {
|
||
|
|
Shutdown();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
void idDynamicAlloc<type, baseBlockSize, minBlockSize>::Init() {
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
void idDynamicAlloc<type, baseBlockSize, minBlockSize>::Shutdown() {
|
||
|
|
Clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
type *idDynamicAlloc<type, baseBlockSize, minBlockSize>::Alloc( const int num ) {
|
||
|
|
numAllocs++;
|
||
|
|
if ( num <= 0 ) {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
numUsedBlocks++;
|
||
|
|
usedBlockMemory += num * sizeof( type );
|
||
|
|
return Mem_Alloc16( num * sizeof( type ), TAG_BLOCKALLOC );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
type *idDynamicAlloc<type, baseBlockSize, minBlockSize>::Resize( type *ptr, const int num ) {
|
||
|
|
|
||
|
|
numResizes++;
|
||
|
|
|
||
|
|
if ( ptr == NULL ) {
|
||
|
|
return Alloc( num );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( num <= 0 ) {
|
||
|
|
Free( ptr );
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
assert( 0 );
|
||
|
|
return ptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
void idDynamicAlloc<type, baseBlockSize, minBlockSize>::Free( type *ptr ) {
|
||
|
|
numFrees++;
|
||
|
|
if ( ptr == NULL ) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
Mem_Free16( ptr );
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
const char *idDynamicAlloc<type, baseBlockSize, minBlockSize>::CheckMemory( const type *ptr ) const {
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize>
|
||
|
|
void idDynamicAlloc<type, baseBlockSize, minBlockSize>::Clear() {
|
||
|
|
numUsedBlocks = 0;
|
||
|
|
usedBlockMemory = 0;
|
||
|
|
numAllocs = 0;
|
||
|
|
numResizes = 0;
|
||
|
|
numFrees = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
==============================================================================
|
||
|
|
|
||
|
|
Fast dynamic block allocator.
|
||
|
|
|
||
|
|
No constructor is called for the 'type'.
|
||
|
|
Allocated blocks are always 16 byte aligned.
|
||
|
|
|
||
|
|
==============================================================================
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "containers/BTree.h"
|
||
|
|
|
||
|
|
//#define DYNAMIC_BLOCK_ALLOC_CHECK
|
||
|
|
|
||
|
|
template<class type>
|
||
|
|
class idDynamicBlock {
|
||
|
|
public:
|
||
|
|
type * GetMemory() const { return (type *)( ( (byte *) this ) + sizeof( idDynamicBlock<type> ) ); }
|
||
|
|
int GetSize() const { return abs( size ); }
|
||
|
|
void SetSize( int s, bool isBaseBlock ) { size = isBaseBlock ? -s : s; }
|
||
|
|
bool IsBaseBlock() const { return ( size < 0 ); }
|
||
|
|
|
||
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
||
|
|
int id[3];
|
||
|
|
void * allocator;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int size; // size in bytes of the block
|
||
|
|
idDynamicBlock<type> * prev; // previous memory block
|
||
|
|
idDynamicBlock<type> * next; // next memory block
|
||
|
|
idBTreeNode<idDynamicBlock<type>,int> *node; // node in the B-Tree with free blocks
|
||
|
|
};
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_ = TAG_BLOCKALLOC>
|
||
|
|
class idDynamicBlockAlloc {
|
||
|
|
public:
|
||
|
|
idDynamicBlockAlloc();
|
||
|
|
~idDynamicBlockAlloc();
|
||
|
|
|
||
|
|
void Init();
|
||
|
|
void Shutdown();
|
||
|
|
void SetFixedBlocks( int numBlocks );
|
||
|
|
void SetLockMemory( bool lock );
|
||
|
|
void FreeEmptyBaseBlocks();
|
||
|
|
|
||
|
|
type * Alloc( const int num );
|
||
|
|
type * Resize( type *ptr, const int num );
|
||
|
|
void Free( type *ptr );
|
||
|
|
const char * CheckMemory( const type *ptr ) const;
|
||
|
|
|
||
|
|
int GetNumBaseBlocks() const { return numBaseBlocks; }
|
||
|
|
int GetBaseBlockMemory() const { return baseBlockMemory; }
|
||
|
|
int GetNumUsedBlocks() const { return numUsedBlocks; }
|
||
|
|
int GetUsedBlockMemory() const { return usedBlockMemory; }
|
||
|
|
int GetNumFreeBlocks() const { return numFreeBlocks; }
|
||
|
|
int GetFreeBlockMemory() const { return freeBlockMemory; }
|
||
|
|
int GetNumEmptyBaseBlocks() const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
idDynamicBlock<type> * firstBlock; // first block in list in order of increasing address
|
||
|
|
idDynamicBlock<type> * lastBlock; // last block in list in order of increasing address
|
||
|
|
idBTree<idDynamicBlock<type>,int,4>freeTree; // B-Tree with free memory blocks
|
||
|
|
bool allowAllocs; // allow base block allocations
|
||
|
|
bool lockMemory; // lock memory so it cannot get swapped out
|
||
|
|
|
||
|
|
#ifdef DYNAMIC_BLOCK_ALLOC_CHECK
|
||
|
|
int blockId[3];
|
||
|
|
#endif
|
||
|
|
|
||
|
|
int numBaseBlocks; // number of base blocks
|
||
|
|
int baseBlockMemory; // total memory in base blocks
|
||
|
|
int numUsedBlocks; // number of used blocks
|
||
|
|
int usedBlockMemory; // total memory in used blocks
|
||
|
|
int numFreeBlocks; // number of free blocks
|
||
|
|
int freeBlockMemory; // total memory in free blocks
|
||
|
|
|
||
|
|
int numAllocs;
|
||
|
|
int numResizes;
|
||
|
|
int numFrees;
|
||
|
|
|
||
|
|
memTag_t tag;
|
||
|
|
|
||
|
|
void Clear();
|
||
|
|
idDynamicBlock<type> * AllocInternal( const int num );
|
||
|
|
idDynamicBlock<type> * ResizeInternal( idDynamicBlock<type> *block, const int num );
|
||
|
|
void FreeInternal( idDynamicBlock<type> *block );
|
||
|
|
void LinkFreeInternal( idDynamicBlock<type> *block );
|
||
|
|
void UnlinkFreeInternal( idDynamicBlock<type> *block );
|
||
|
|
void CheckMemory() const;
|
||
|
|
};
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_>
|
||
|
|
idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::idDynamicBlockAlloc() {
|
||
|
|
tag = _tag_;
|
||
|
|
Clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_>
|
||
|
|
idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::~idDynamicBlockAlloc() {
|
||
|
|
Shutdown();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_>
|
||
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::Init() {
|
||
|
|
freeTree.Init();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_>
|
||
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::Shutdown() {
|
||
|
|
idDynamicBlock<type> *block;
|
||
|
|
|
||
|
|
for ( block = firstBlock; block != NULL; block = block->next ) {
|
||
|
|
if ( block->node == NULL ) {
|
||
|
|
FreeInternal( block );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for ( block = firstBlock; block != NULL; block = firstBlock ) {
|
||
|
|
firstBlock = block->next;
|
||
|
|
assert( block->IsBaseBlock() );
|
||
|
|
if ( lockMemory ) {
|
||
|
|
//idLib::sys->UnlockMemory( block, block->GetSize() + (int)sizeof( idDynamicBlock<type> ) );
|
||
|
|
}
|
||
|
|
Mem_Free16( block );
|
||
|
|
}
|
||
|
|
|
||
|
|
freeTree.Shutdown();
|
||
|
|
|
||
|
|
Clear();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_>
|
||
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::SetFixedBlocks( int numBlocks ) {
|
||
|
|
idDynamicBlock<type> *block;
|
||
|
|
|
||
|
|
for ( int i = numBaseBlocks; i < numBlocks; i++ ) {
|
||
|
|
block = ( idDynamicBlock<type> * ) Mem_Alloc16( baseBlockSize, _tag_ );
|
||
|
|
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( baseBlockSize - (int)sizeof( idDynamicBlock<type> ), true );
|
||
|
|
block->next = NULL;
|
||
|
|
block->prev = lastBlock;
|
||
|
|
if ( lastBlock ) {
|
||
|
|
lastBlock->next = block;
|
||
|
|
} else {
|
||
|
|
firstBlock = block;
|
||
|
|
}
|
||
|
|
lastBlock = block;
|
||
|
|
block->node = NULL;
|
||
|
|
|
||
|
|
FreeInternal( block );
|
||
|
|
|
||
|
|
numBaseBlocks++;
|
||
|
|
baseBlockMemory += baseBlockSize;
|
||
|
|
}
|
||
|
|
|
||
|
|
allowAllocs = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_>
|
||
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::SetLockMemory( bool lock ) {
|
||
|
|
lockMemory = lock;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_>
|
||
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::FreeEmptyBaseBlocks() {
|
||
|
|
idDynamicBlock<type> *block, *next;
|
||
|
|
|
||
|
|
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, memTag_t _tag_>
|
||
|
|
int idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::GetNumEmptyBaseBlocks() 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, memTag_t _tag_>
|
||
|
|
type *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::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, memTag_t _tag_>
|
||
|
|
type *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::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, memTag_t _tag_>
|
||
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::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, memTag_t _tag_>
|
||
|
|
const char *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::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, memTag_t _tag_>
|
||
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::Clear() {
|
||
|
|
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, memTag_t _tag_>
|
||
|
|
idDynamicBlock<type> *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::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, _tag_ );
|
||
|
|
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, memTag_t _tag_>
|
||
|
|
idDynamicBlock<type> *idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::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, memTag_t _tag_>
|
||
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::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, memTag_t _tag_>
|
||
|
|
ID_INLINE void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::LinkFreeInternal( idDynamicBlock<type> *block ) {
|
||
|
|
block->node = freeTree.Add( block, block->GetSize() );
|
||
|
|
numFreeBlocks++;
|
||
|
|
freeBlockMemory += block->GetSize();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_>
|
||
|
|
ID_INLINE void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::UnlinkFreeInternal( idDynamicBlock<type> *block ) {
|
||
|
|
freeTree.Remove( block->node );
|
||
|
|
block->node = NULL;
|
||
|
|
numFreeBlocks--;
|
||
|
|
freeBlockMemory -= block->GetSize();
|
||
|
|
}
|
||
|
|
|
||
|
|
template<class type, int baseBlockSize, int minBlockSize, memTag_t _tag_>
|
||
|
|
void idDynamicBlockAlloc<type, baseBlockSize, minBlockSize, _tag_>::CheckMemory() 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__ */
|