85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose:
|
|
//
|
|
// $NoKeywords: $
|
|
//
|
|
//=============================================================================//
|
|
#ifndef ZONE_H
|
|
#define ZONE_H
|
|
#pragma once
|
|
|
|
#include "tier0/dbg.h"
|
|
|
|
void Memory_Init (void);
|
|
void Memory_Shutdown( void );
|
|
|
|
void *Hunk_Alloc(int size, bool bClear = true );
|
|
void *Hunk_AllocName (int size, const char *name, bool bClear = true );
|
|
|
|
int Hunk_LowMark (void);
|
|
void Hunk_FreeToLowMark (int mark);
|
|
|
|
void Hunk_Check (void);
|
|
|
|
int Hunk_MallocSize();
|
|
int Hunk_Size();
|
|
|
|
void Hunk_Print();
|
|
|
|
template< typename T >
|
|
class CHunkMemory
|
|
{
|
|
public:
|
|
// constructor, destructor
|
|
CHunkMemory( int nGrowSize = 0, int nInitSize = 0 ) { m_pMemory = NULL; m_nAllocated = 0; if ( nInitSize ) Grow( nInitSize ); }
|
|
CHunkMemory( T* pMemory, int numElements ) { Assert( 0 ); }
|
|
|
|
// Can we use this index?
|
|
bool IsIdxValid( int i ) const { return (i >= 0) && (i < m_nAllocated); }
|
|
|
|
// Gets the base address
|
|
T* Base() { return (T*)m_pMemory; }
|
|
const T* Base() const { return (T*)m_pMemory; }
|
|
|
|
// element access
|
|
T& operator[]( int i ) { Assert( IsIdxValid(i) ); return Base()[i]; }
|
|
const T& operator[]( int i ) const { Assert( IsIdxValid(i) ); return Base()[i]; }
|
|
T& Element( int i ) { Assert( IsIdxValid(i) ); return Base()[i]; }
|
|
const T& Element( int i ) const { Assert( IsIdxValid(i) ); return Base()[i]; }
|
|
|
|
// Attaches the buffer to external memory....
|
|
void SetExternalBuffer( T* pMemory, int numElements ) { Assert( 0 ); }
|
|
|
|
// Size
|
|
int NumAllocated() const { return m_nAllocated; }
|
|
int Count() const { return m_nAllocated; }
|
|
|
|
// Grows the memory, so that at least allocated + num elements are allocated
|
|
void Grow( int num = 1 ) { Assert( !m_nAllocated ); m_pMemory = (T *)Hunk_Alloc( num * sizeof(T), false ); m_nAllocated = num; }
|
|
|
|
// Makes sure we've got at least this much memory
|
|
void EnsureCapacity( int num ) { Assert( num <= m_nAllocated ); }
|
|
|
|
// Memory deallocation
|
|
void Purge() { m_nAllocated = 0; }
|
|
|
|
// Purge all but the given number of elements (NOT IMPLEMENTED IN )
|
|
void Purge( int numElements ) { Assert( 0 ); }
|
|
|
|
// is the memory externally allocated?
|
|
bool IsExternallyAllocated() const { return false; }
|
|
|
|
// Set the size by which the memory grows
|
|
void SetGrowSize( int size ) {}
|
|
|
|
private:
|
|
T *m_pMemory;
|
|
int m_nAllocated;
|
|
};
|
|
|
|
|
|
#endif // ZONE_H
|
|
|
|
|