173 lines
4.1 KiB
C++
173 lines
4.1 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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//=============================================================================//
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#include "pch_tier0.h"
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#include "mem_helpers.h"
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#include <string.h>
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#include <malloc.h>
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bool g_bInitMemory = true;
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#ifdef POSIX
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void DoApplyMemoryInitializations( void *pMem, int nSize )
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{
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}
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size_t CalcHeapUsed()
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{
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return 0;
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}
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#else
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unsigned long g_dwFeeFee = 0xffeeffee;
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// Generated by Mathematica.
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unsigned char g_RandomValues[256] = {
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95, 126, 220, 71, 92, 179, 95, 219, 111, 150, 38, 155, 181, 62, 40, 231, 238,
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54, 47, 55, 186, 204, 64, 70, 118, 94, 107, 251, 199, 140, 67, 87, 86, 127,
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210, 41, 21, 90, 208, 24, 167, 204, 32, 254, 38, 51, 9, 11, 38, 33, 188, 104,
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0, 75, 119, 24, 122, 203, 24, 164, 250, 224, 241, 182, 213, 201, 173, 67,
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200, 255, 244, 227, 46, 219, 26, 149, 218, 132, 120, 154, 227, 244, 106, 198,
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109, 87, 150, 40, 16, 99, 169, 193, 100, 156, 78, 171, 246, 47, 84, 119, 10,
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52, 207, 171, 230, 90, 90, 127, 180, 153, 68, 140, 62, 14, 87, 57, 208, 154,
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116, 29, 131, 177, 224, 187, 51, 148, 142, 245, 152, 230, 184, 117, 91, 146,
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235, 153, 35, 104, 187, 177, 215, 131, 17, 49, 211, 244, 60, 152, 103, 248,
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51, 224, 237, 240, 51, 30, 10, 233, 253, 106, 252, 73, 134, 136, 178, 86,
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228, 107, 77, 255, 85, 242, 204, 119, 102, 53, 209, 35, 123, 32, 252, 210,
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43, 12, 136, 167, 155, 210, 71, 254, 178, 172, 3, 230, 93, 208, 196, 68, 235,
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16, 106, 189, 201, 177, 85, 78, 206, 187, 48, 68, 64, 190, 117, 236, 49, 174,
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105, 63, 207, 70, 170, 93, 6, 110, 52, 111, 169, 92, 247, 86, 10, 174, 207,
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240, 104, 209, 81, 177, 123, 189, 175, 212, 101, 219, 114, 243, 44, 91, 51,
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139, 91, 57, 120, 41, 98, 119 };
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unsigned long g_iCurRandomValueOffset = 0;
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void InitializeToFeeFee( void *pMem, int nSize )
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{
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unsigned long *pCurDWord = (unsigned long*)pMem;
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int nDWords = nSize >> 2;
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while ( nDWords )
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{
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*pCurDWord = 0xffeeffee;
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++pCurDWord;
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--nDWords;
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}
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unsigned char *pCurChar = (unsigned char*)pCurDWord;
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int nBytes = nSize & 3;
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int iOffset = 0;
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while ( nBytes )
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{
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*pCurChar = ((unsigned char*)&g_dwFeeFee)[iOffset];
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++iOffset;
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--nBytes;
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++pCurChar;
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}
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}
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void InitializeToRandom( void *pMem, int nSize )
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{
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unsigned char *pOut = (unsigned char *)pMem;
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for ( int i=0; i < nSize; i++ )
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{
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pOut[i] = g_RandomValues[(g_iCurRandomValueOffset & 255)];
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++g_iCurRandomValueOffset;
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}
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}
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void DoApplyMemoryInitializations( void *pMem, int nSize )
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{
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if ( !pMem )
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return;
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// If they passed -noinitmemory on the command line, don't do anything here.
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Assert( g_bInitMemory );
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// First time we get in here, remember all the settings.
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static bool bDebuggerPresent = Plat_IsInDebugSession();
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static bool bCheckedCommandLine = false;
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static bool bRandomizeMemory = false;
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if ( !bCheckedCommandLine )
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{
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bCheckedCommandLine = true;
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//APS
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char *pStr = (char*)Plat_GetCommandLineA();
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if ( pStr )
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{
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char tempStr[512];
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strncpy( tempStr, pStr, sizeof( tempStr ) - 1 );
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tempStr[ sizeof( tempStr ) - 1 ] = 0;
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_strupr( tempStr );
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if ( strstr( tempStr, "-RANDOMIZEMEMORY" ) )
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bRandomizeMemory = true;
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if ( strstr( tempStr, "-NOINITMEMORY" ) )
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g_bInitMemory = false;
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}
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}
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if ( bRandomizeMemory )
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{
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// They asked for it.. randomize all the memory.
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InitializeToRandom( pMem, nSize );
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}
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else
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{
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if ( bDebuggerPresent )
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{
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// Ok, it's already set to 0xbaadf00d, but we want something that will make floating-point #'s NANs.
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InitializeToFeeFee( pMem, nSize );
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}
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else
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{
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#ifdef _DEBUG
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// Ok, it's already set to 0xcdcdcdcd, but we want something that will make floating-point #'s NANs.
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InitializeToFeeFee( pMem, nSize );
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#endif
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}
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}
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}
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size_t CalcHeapUsed()
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{
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#if defined( _X360 )
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return 0;
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#else
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_HEAPINFO hinfo;
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int heapstatus;
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intp nTotal;
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nTotal = 0;
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hinfo._pentry = NULL;
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while( ( heapstatus = _heapwalk( &hinfo ) ) == _HEAPOK )
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{
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nTotal += (hinfo._useflag == _USEDENTRY) ? hinfo._size : 0;
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}
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switch (heapstatus)
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{
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case _HEAPEMPTY:
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case _HEAPEND:
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// success
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break;
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default:
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// heap corrupted
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nTotal = -1;
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}
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return nTotal;
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#endif
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}
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#endif
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