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//========= Copyright (c) 1996-2005, Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//===========================================================================//
#include "tier0/platform.h"
#include "tier0/icommandline.h"
#include "tier0/dbg.h"
#include "mem_helpers.h"
#include <string.h>
//#include <malloc.h>
// NOTE: This has to be the last file included!
#include "tier0/memdbgon.h"
// Needed for debugging
const char *g_pszModule = "tier0";
bool g_bInitMemory = true;
#if defined(PLATFORM_POSIX) || defined( PLATFORM_PS3)
void DoApplyMemoryInitializations( void *pMem, size_t nSize )
{
}
size_t CalcHeapUsed()
{
return 0;
}
#else
unsigned long g_dwFeeFee = 0xffeeffee;
// Generated by Mathematica.
unsigned char g_RandomValues[256] = {
95, 126, 220, 71, 92, 179, 95, 219, 111, 150, 38, 155, 181, 62, 40, 231, 238,
54, 47, 55, 186, 204, 64, 70, 118, 94, 107, 251, 199, 140, 67, 87, 86, 127,
210, 41, 21, 90, 208, 24, 167, 204, 32, 254, 38, 51, 9, 11, 38, 33, 188, 104,
0, 75, 119, 24, 122, 203, 24, 164, 250, 224, 241, 182, 213, 201, 173, 67,
200, 255, 244, 227, 46, 219, 26, 149, 218, 132, 120, 154, 227, 244, 106, 198,
109, 87, 150, 40, 16, 99, 169, 193, 100, 156, 78, 171, 246, 47, 84, 119, 10,
52, 207, 171, 230, 90, 90, 127, 180, 153, 68, 140, 62, 14, 87, 57, 208, 154,
116, 29, 131, 177, 224, 187, 51, 148, 142, 245, 152, 230, 184, 117, 91, 146,
235, 153, 35, 104, 187, 177, 215, 131, 17, 49, 211, 244, 60, 152, 103, 248,
51, 224, 237, 240, 51, 30, 10, 233, 253, 106, 252, 73, 134, 136, 178, 86,
228, 107, 77, 255, 85, 242, 204, 119, 102, 53, 209, 35, 123, 32, 252, 210,
43, 12, 136, 167, 155, 210, 71, 254, 178, 172, 3, 230, 93, 208, 196, 68, 235,
16, 106, 189, 201, 177, 85, 78, 206, 187, 48, 68, 64, 190, 117, 236, 49, 174,
105, 63, 207, 70, 170, 93, 6, 110, 52, 111, 169, 92, 247, 86, 10, 174, 207,
240, 104, 209, 81, 177, 123, 189, 175, 212, 101, 219, 114, 243, 44, 91, 51,
139, 91, 57, 120, 41, 98, 119 };
unsigned long g_iCurRandomValueOffset = 0;
void InitializeToFeeFee( void *pMem, size_t nSize )
{
unsigned long *pCurDWord = (unsigned long*)pMem;
size_t nDWords = nSize >> 2;
while ( nDWords )
{
*pCurDWord = 0xffeeffee;
++pCurDWord;
--nDWords;
}
unsigned char *pCurChar = (unsigned char*)pCurDWord;
size_t nBytes = nSize & 3;
size_t iOffset = 0;
while ( nBytes )
{
*pCurChar = ((unsigned char*)&g_dwFeeFee)[iOffset];
++iOffset;
--nBytes;
++pCurChar;
}
}
void InitializeToRandom( void *pMem, size_t nSize )
{
unsigned char *pOut = (unsigned char *)pMem;
for ( size_t i=0; i < nSize; i++ )
{
pOut[i] = g_RandomValues[(g_iCurRandomValueOffset & 255)];
++g_iCurRandomValueOffset;
}
}
void DoApplyMemoryInitializations( void *pMem, size_t nSize )
{
if ( !pMem )
return;
// If they passed -noinitmemory on the command line, don't do anything here.
Assert( g_bInitMemory );
// First time we get in here, remember all the settings.
static bool bDebuggerPresent = Plat_IsInDebugSession();
static bool bCheckedCommandLine = false;
static bool bRandomizeMemory = false;
if ( !bCheckedCommandLine )
{
bCheckedCommandLine = true;
//APS
char *pStr = (char*)Plat_GetCommandLineA();
if ( pStr )
{
char tempStr[512];
strncpy( tempStr, pStr, sizeof( tempStr ) - 1 );
tempStr[ sizeof( tempStr ) - 1 ] = 0;
_strupr( tempStr );
if ( strstr( tempStr, "-RANDOMIZEMEMORY" ) )
bRandomizeMemory = true;
if ( strstr( tempStr, "-NOINITMEMORY" ) )
g_bInitMemory = false;
}
}
if ( bRandomizeMemory )
{
// They asked for it.. randomize all the memory.
InitializeToRandom( pMem, nSize );
}
else
{
if ( bDebuggerPresent )
{
// Ok, it's already set to 0xbaadf00d, but we want something that will make floating-point #'s NANs.
InitializeToFeeFee( pMem, nSize );
}
else
{
#if defined(_DEBUG) || defined(USE_LIGHT_MEM_DEBUG)
#ifdef LIGHT_MEM_DEBUG_REQUIRES_CMD_LINE_SWITCH
extern bool g_bUsingLMD;
if ( !g_bUsingLMD )
{
return;
}
#endif
// Ok, it's already set to 0xcdcdcdcd, but we want something that will make floating-point #'s NANs.
InitializeToFeeFee( pMem, nSize );
#endif
}
}
}
size_t CalcHeapUsed()
{
#if defined( _X360 )
return 0;
#else
_HEAPINFO hinfo;
int heapstatus;
intp nTotal;
nTotal = 0;
hinfo._pentry = NULL;
while( ( heapstatus = _heapwalk( &hinfo ) ) == _HEAPOK )
{
nTotal += (hinfo._useflag == _USEDENTRY) ? hinfo._size : 0;
}
switch (heapstatus)
{
case _HEAPEMPTY:
case _HEAPEND:
// success
break;
default:
// heap corrupted
nTotal = -1;
}
return nTotal;
#endif
}
#endif // not PLATFORM_POSIX
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