278 lines
7.3 KiB
C++
278 lines
7.3 KiB
C++
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//===== Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ======//
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//
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// Purpose:
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//
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// ZONE MEMORY ALLOCATION
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//
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// There is never any space between memblocks, and there will never be two
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// contiguous free memblocks.
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//
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// The rover can be left pointing at a non-empty block
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//
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// The zone calls are pretty much only used for small strings and structures,
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// all big things are allocated on the hunk.
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//===========================================================================//
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#include "basetypes.h"
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#include "zone.h"
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#include "host.h"
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#include "tier1/strtools.h"
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#include "tier1/utldict.h"
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#include "tier0/icommandline.h"
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#include "memstack.h"
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#include "datacache/idatacache.h"
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#include "sys_dll.h"
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#include "tier3/tier3.h"
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#include "tier0/memalloc.h"
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// NOTE: This has to be the last file included!
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#include "tier0/memdbgon.h"
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#define KB (1024)
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#define MB (1024*1024)
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#define MINIMUM_WIN_MEMORY (48*MB) // FIXME: copy from sys_dll.cpp, find a common header at some point
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// PORTAL 2 SHIPPING CHANGE
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// We're sacrificing a little perf (~1% in pathological case) for 12 MB of memory back on X360
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// #ifdef _X360
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// #define HUNK_USE_16MB_PAGE
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// #endif
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CMemoryStack g_HunkMemoryStack;
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#ifdef HUNK_USE_16MB_PAGE
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CMemoryStack g_HunkOverflow;
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static bool g_bWarnedOverflow;
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#define SIZE_PHYSICAL_HUNK (16*MB)
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#endif
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const int HUNK_COMMIT_FLOOR = ( IsGameConsole() ? 4/*18*/ : 40 )*MB;
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const char *CHunkAllocCredit::s_DbgInfoStack[ DBG_INFO_STACK_DEPTH ];
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int CHunkAllocCredit::s_DbgInfoStackDepth = -1;
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#if !defined( _CERT )
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ConVar hunk_track_allocation_types( "hunk_track_allocation_types", "1", FCVAR_CHEAT );
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#else
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ConVar hunk_track_allocation_types( "hunk_track_allocation_types", "0", FCVAR_CHEAT );
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#endif
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CUtlDict<int, int> g_HunkAllocationsByName;
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struct hunkalloc_t { int index, size; };
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int HunkAllocSortFunc( const void *a, const void *b )
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{
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const hunkalloc_t *A = (const hunkalloc_t *)a, *B = (const hunkalloc_t *)b;
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return ( A->size > B->size ) ? -1 : +1;
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}
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CON_COMMAND_F( hunk_print_allocations, "", FCVAR_CLIENTCMD_CAN_EXECUTE )
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{
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Msg( "Hunk allocations:\n");
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hunkalloc_t *items = new hunkalloc_t[ g_HunkAllocationsByName.Count() ];
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int numItems = 0, total = 0;
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for ( int i = g_HunkAllocationsByName.First(); i != g_HunkAllocationsByName.InvalidIndex(); i = g_HunkAllocationsByName.Next( i ) )
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{
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if ( !g_HunkAllocationsByName.Element( i ) )
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continue;
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hunkalloc_t item = { i, g_HunkAllocationsByName.Element( i ) };
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items[numItems++] = item;
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total += item.size;
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}
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qsort( items, numItems, sizeof( hunkalloc_t ), HunkAllocSortFunc );
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Msg( " %55s:%10d\n", "TOTAL:", total );
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for ( int i = 0; i < numItems; i++ )
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{
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Msg( " %55s:%10d\n", g_HunkAllocationsByName.GetElementName( items[i].index ), items[i].size );
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}
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delete [] items;
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#if defined( _X360 )
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xBudgetInfo_t budgetInfo;
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budgetInfo.BSPSize = total;
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XBX_rBudgetInfo( &budgetInfo );
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#endif
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}
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static int GetTargetCacheSize()
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{
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int nMemLimit = host_parms.memsize - Hunk_Size();
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if ( nMemLimit < 0x100000 )
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{
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nMemLimit = 0x100000;
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}
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return nMemLimit;
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}
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/*
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===================
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Hunk_AllocName
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===================
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*/
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void *Hunk_AllocName(int size, const char *name, bool bClear)
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{
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if ( hunk_track_allocation_types.GetBool() )
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{
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MEM_ALLOC_CREDIT();
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if ( !name )
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{
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name = "unknown";
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}
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int i = g_HunkAllocationsByName.Find( name );
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if ( i == g_HunkAllocationsByName.InvalidIndex() )
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{
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i = g_HunkAllocationsByName.Insert( name );
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g_HunkAllocationsByName[i] = size;
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}
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else
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{
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g_HunkAllocationsByName[i] += size;
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}
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}
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void *p = g_HunkMemoryStack.Alloc( size, bClear );
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#ifdef _GAMECONSOLE
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int overflowAmt = g_HunkMemoryStack.GetCurrentAllocPoint() - HUNK_COMMIT_FLOOR;
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if ( ( overflowAmt > 0 ) && ( overflowAmt <= size ) )
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Warning( "HUNK OVERFLOW! Map BSP data consuming %d bytes more memory than expected...\n", overflowAmt );
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#endif
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if ( p )
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return p;
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#ifdef HUNK_USE_16MB_PAGE
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if ( !g_bWarnedOverflow )
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{
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g_bWarnedOverflow = true;
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DevMsg( "Note: Hunk base page exhausted\n" );
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}
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p = g_HunkOverflow.Alloc( size, bClear );
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if ( p )
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return p;
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#endif
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Error( "Engine hunk overflow!\n" );
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return NULL;
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}
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/*
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===================
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Hunk_Alloc
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===================
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*/
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int Hunk_LowMark(void)
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{
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return (int)( g_HunkMemoryStack.GetCurrentAllocPoint() );
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}
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void Hunk_FreeToLowMark(int mark)
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{
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Assert( mark < g_HunkMemoryStack.GetSize() );
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#ifdef HUNK_USE_16MB_PAGE
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g_HunkOverflow.FreeAll( false );
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g_bWarnedOverflow = false;
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#endif
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g_HunkMemoryStack.FreeToAllocPoint( mark, false );
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g_HunkAllocationsByName.RemoveAll();
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}
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int Hunk_MallocSize()
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{
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#ifdef HUNK_USE_16MB_PAGE
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return g_HunkMemoryStack.GetSize() + g_HunkOverflow.GetSize();
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#else
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return g_HunkMemoryStack.GetSize();
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#endif
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}
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int Hunk_Size()
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{
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#ifdef HUNK_USE_16MB_PAGE
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return g_HunkMemoryStack.GetUsed() + g_HunkOverflow.GetUsed();
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#else
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return g_HunkMemoryStack.GetUsed();
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#endif
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}
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void Hunk_Print()
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{
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#ifdef HUNK_USE_16MB_PAGE
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Msg( "Total used memory: %d (%d/%d)\n", Hunk_Size(), g_HunkMemoryStack.GetUsed(), g_HunkOverflow.GetUsed() );
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Msg( "Total committed memory: %d (%d/%d)\n", Hunk_MallocSize(), g_HunkMemoryStack.GetSize(), g_HunkOverflow.GetSize() );
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#else
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Msg( "Total used memory: %d\n", Hunk_Size() );
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Msg( "Total committed memory: %d\n", Hunk_MallocSize() );
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#endif
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}
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void Hunk_OnMapStart( int nEstimatedBytes )
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{
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int nToCommit = MAX( nEstimatedBytes, HUNK_COMMIT_FLOOR );
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#ifndef HUNK_USE_16MB_PAGE
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CMemoryStack *pStack = &g_HunkMemoryStack;
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#else
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CMemoryStack *pStack = &g_HunkOverflow;
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nToCommit -= SIZE_PHYSICAL_HUNK;
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#endif
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if ( developer.GetBool() )
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{
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DevMsg( "Hunk_OnMapStart: %d\n", nToCommit );
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}
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if ( nToCommit > 0 )
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{
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pStack->CommitSize( nToCommit );
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void Memory_Init( void )
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{
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MEM_ALLOC_CREDIT();
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#ifdef PLATFORM_64BITS
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// Seems to need to be larger to not get exhausted on
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// 64-bit. Perhaps because of larger pointer sizes.
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int nMaxBytes = 128*MB;
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#else
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int nMaxBytes = 64*MB;
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#endif
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const int commitIncrement = 64*KB;
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#ifndef HUNK_USE_16MB_PAGE
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const int nInitialCommit = MIN( HUNK_COMMIT_FLOOR, nMaxBytes );
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while ( !g_HunkMemoryStack.Init( "g_HunkMemoryStack", nMaxBytes, commitIncrement, nInitialCommit ) )
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{
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Warning( "Unable to allocate %d MB of memory, trying %d MB instead\n", nMaxBytes, nMaxBytes/2 );
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nMaxBytes /= 2;
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if ( nMaxBytes < MINIMUM_WIN_MEMORY )
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{
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Error( "Failed to allocate minimum memory requirement for game (%d MB)\n", MINIMUM_WIN_MEMORY/MB);
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}
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}
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#else
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if ( !g_HunkMemoryStack.InitPhysical( "g_HunkMemoryStack", SIZE_PHYSICAL_HUNK, 4096 ) || !g_HunkOverflow.Init( "g_HunkOverflow", nMaxBytes - SIZE_PHYSICAL_HUNK, commitIncrement, (SIZE_PHYSICAL_HUNK < HUNK_COMMIT_FLOOR ) ? HUNK_COMMIT_FLOOR - SIZE_PHYSICAL_HUNK : 0 ) )
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{
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Error( "Failed to allocate minimum memory requirement for game (%d MB)\n", nMaxBytes );
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}
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#endif
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g_pDataCache->SetSize( GetTargetCacheSize() );
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void Memory_Shutdown( void )
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{
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g_HunkMemoryStack.FreeAll();
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// This disconnects the engine data cache
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g_pDataCache->SetSize( 0 );
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}
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