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