mirror of
https://github.com/nillerusr/source-engine.git
synced 2024-12-22 14:16:50 +00:00
97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose: Memory allocation!
|
|
//
|
|
// $NoKeywords: $
|
|
//=============================================================================//
|
|
|
|
#include "pch_tier0.h"
|
|
#include "tier0/mem.h"
|
|
#include <malloc.h>
|
|
#include "tier0/dbg.h"
|
|
#include "tier0/minidump.h"
|
|
|
|
// memdbgon must be the last include file in a .cpp file!!!
|
|
#include "tier0/memdbgon.h"
|
|
|
|
#ifndef STEAM
|
|
#define PvRealloc realloc
|
|
#define PvAlloc malloc
|
|
#define PvExpand _expand
|
|
#endif
|
|
|
|
enum
|
|
{
|
|
MAX_STACK_DEPTH = 32
|
|
};
|
|
|
|
static uint8 *s_pBuf = NULL;
|
|
static int s_pBufStackDepth[MAX_STACK_DEPTH];
|
|
static int s_nBufDepth = -1;
|
|
static int s_nBufCurSize = 0;
|
|
static int s_nBufAllocSize = 0;
|
|
static bool s_oomerror_called = false;
|
|
|
|
void MemAllocOOMError( size_t nSize )
|
|
{
|
|
if ( !s_oomerror_called )
|
|
{
|
|
s_oomerror_called = true;
|
|
|
|
MinidumpUserStreamInfoAppend( "MemAllocOOMError: %u bytes\n", (uint)nSize );
|
|
|
|
//$ TODO: Need a good error message here.
|
|
// A basic advice to try lowering texture settings is just most-likely to help users who are exhausting address
|
|
// space, but not necessarily the cause. Ideally the engine wouldn't let you get here because of too-high settings.
|
|
Error( "Out of memory or address space. Texture quality setting may be too high.\n" );
|
|
}
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Other DLL-exported methods for particular kinds of memory
|
|
//-----------------------------------------------------------------------------
|
|
void *MemAllocScratch( int nMemSize )
|
|
{
|
|
// Minimally allocate 1M scratch
|
|
if (s_nBufAllocSize < s_nBufCurSize + nMemSize)
|
|
{
|
|
s_nBufAllocSize = s_nBufCurSize + nMemSize;
|
|
if (s_nBufAllocSize < 1024 * 1024)
|
|
{
|
|
s_nBufAllocSize = 1024 * 1024;
|
|
}
|
|
|
|
if (s_pBuf)
|
|
{
|
|
s_pBuf = (uint8*)PvRealloc( s_pBuf, s_nBufAllocSize );
|
|
Assert( s_pBuf );
|
|
}
|
|
else
|
|
{
|
|
s_pBuf = (uint8*)PvAlloc( s_nBufAllocSize );
|
|
}
|
|
}
|
|
|
|
int nBase = s_nBufCurSize;
|
|
s_nBufCurSize += nMemSize;
|
|
++s_nBufDepth;
|
|
Assert( s_nBufDepth < MAX_STACK_DEPTH );
|
|
s_pBufStackDepth[s_nBufDepth] = nMemSize;
|
|
|
|
return &s_pBuf[nBase];
|
|
}
|
|
|
|
void MemFreeScratch()
|
|
{
|
|
Assert( s_nBufDepth >= 0 );
|
|
s_nBufCurSize -= s_pBufStackDepth[s_nBufDepth];
|
|
--s_nBufDepth;
|
|
}
|
|
|
|
#ifdef POSIX
|
|
void ZeroMemory( void *mem, size_t length )
|
|
{
|
|
memset( mem, 0x0, length );
|
|
}
|
|
#endif
|