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CWE-ou-minkata/Sources/Plasma/CoreLibExe/hsExeMalloc.cpp

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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
/*****************************************************************************
*
* $/Plasma20/Sources/Plasma/CoreLibExe/hsExeMalloc.cpp
*
***/
#include "Pch.h"
#pragma hdrstop
/****************************************************************************
*
* Local constants
*
***/
#if defined(NO_MEM_TRACKER) || !defined(HS_FIND_MEM_LEAKS) || !defined(HS_BUILD_FOR_WIN32) || !defined(_MSC_VER)
// no mem debugging
#else
# undef MEM_DEBUG
# define MEM_DEBUG
#endif
const unsigned kMemReallocInPlaceOnly = 1<<0;
const unsigned kMemZero = 1<<1;
const unsigned kMemIgnoreBlock = 1<<2; // don't track this allocation
#ifndef MEM_DEBUG
# define _malloc_dbg(s, t, f, l) malloc(s)
# define _calloc_dbg(c, s, t, f, l) calloc(c, s)
# define _realloc_dbg(p, s, t, f, l) realloc(p, s)
# define _expand_dbg(p, s, t, f, l) _expand(p, s)
# define _free_dbg(p, t) free(p)
# define _msize_dbg(p, t) _msize(p)
# ifndef _CLIENT_BLOCK
# define _CLIENT_BLOCK 0
# endif
# ifndef _IGNORE_BLOCK
# define _IGNORE_BLOCK 0
# endif
# ifndef _CRTDBG_ALLOC_MEM_DF
# define _CRTDBG_ALLOC_MEM_DF 0
# endif
# define SET_CRT_DEBUG_FIELD(a)
# define CLEAR_CRT_DEBUG_FIELD(a)
#endif // !MEM_DEBUG
/*****************************************************************************
*
* Private data
*
***/
#ifdef MEM_DEBUG
#define SET_CRT_DEBUG_FIELD(a) \
_CrtSetDbgFlag((a) | _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG))
#define CLEAR_CRT_DEBUG_FIELD(a) \
_CrtSetDbgFlag(~(a) & _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG))
// From dbgint.h
#define nNoMansLandSize 4
typedef struct _CrtMemBlockHeader
{
struct _CrtMemBlockHeader * pBlockHeaderNext;
struct _CrtMemBlockHeader * pBlockHeaderPrev;
char * szFileName;
int nLine;
#ifdef _WIN64
/* These items are reversed on Win64 to eliminate gaps in the struct
* and ensure that sizeof(struct)%16 == 0, so 16-byte alignment is
* maintained in the debug heap.
*/
int nBlockUse;
size_t nDataSize;
#else /* _WIN64 */
size_t nDataSize;
int nBlockUse;
#endif /* _WIN64 */
long lRequest;
unsigned char gap[nNoMansLandSize];
/* followed by:
* unsigned char data[nDataSize];
* unsigned char anotherGap[nNoMansLandSize];
*/
} _CrtMemBlockHeader;
#define pbData(pblock) ((unsigned char *)((_CrtMemBlockHeader *)pblock + 1))
#define pHdr(pbData) (((_CrtMemBlockHeader *)pbData)-1)
enum EMemFile {
kMemErr,
kMemLeaks,
kMemUsage,
kMemAllocs,
kNumMemFiles
};
static char * s_memFilename[kNumMemFiles] = {
"MemErr.log",
"MemLeaks.log",
"MemUsage.log",
"MemAllocs.log",
};
static char * s_memDlgTitle[kNumMemFiles] = {
"Memory error",
"Memory leak",
nil,
nil,
};
static HANDLE s_memFile[kNumMemFiles] = {
INVALID_HANDLE_VALUE,
INVALID_HANDLE_VALUE,
INVALID_HANDLE_VALUE,
INVALID_HANDLE_VALUE,
};
struct MemDumpParam {
EMemFile file;
bool showDialog;
};
static unsigned s_memColor;
static unsigned s_memCheckOff;
static CCritSect * s_critsect;
#endif // MEM_DEBUG
namespace ExeMalloc {
/*****************************************************************************
*
* Internal functions
*
***/
//===========================================================================
#ifdef MEM_DEBUG
static void ConvertFilename (
const char src[],
unsigned chars,
char * dst
) {
// Because the filename field may point into a DLL that has been
// unloaded, this code validates and converts the string into a
// reasonable value
__try {
unsigned pos = 0;
for (;;) {
// If the file name is too long then assume it is bogus
if (pos >= chars) {
pos = 0;
break;
}
// Get the next character
unsigned chr = src[pos];
if (!chr)
break;
// If the character isn't valid low-ASCII
// then assume that the name is bogus
if ((chr < 32) || (chr > 127)) {
pos = 0;
break;
}
// Store character
dst[pos++] = (char) chr;
}
// Ensure that name is terminated
dst[pos] = 0;
}
__except(EXCEPTION_EXECUTE_HANDLER) {
dst[0] = 0;
}
// Print the address of the filename; it may be of some
// use given the load address and the map file of the DLL
if (!dst[0])
snprintf(dst, chars, "@%p", src);
}
#endif // MEM_DEBUG
//===========================================================================
#ifdef MEM_DEBUG
static void OpenErrorFile (EMemFile file) {
ASSERT(INVALID_HANDLE_VALUE == s_memFile[file]);
s_memFile[file] = CreateFile(
s_memFilename[file],
GENERIC_WRITE,
FILE_SHARE_READ,
(LPSECURITY_ATTRIBUTES) NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL
);
}
#endif // MEM_DEBUG
//===========================================================================
#ifdef MEM_DEBUG
static void __cdecl ReportMem (EMemFile file, bool showDialog, const char fmt[], ...) {
if (s_memFile[file] == INVALID_HANDLE_VALUE) {
DebugBreakIfDebuggerPresent();
OpenErrorFile(file);
ErrorMinimizeAppWindow();
}
char buffer[512];
va_list args;
va_start(args, fmt);
DWORD length = hsVsnprintf(buffer, arrsize(buffer), fmt, args);
va_end(args);
#ifdef HS_BUILD_FOR_WIN32
OutputDebugStringA(buffer);
if (s_memFile[file] != INVALID_HANDLE_VALUE)
WriteFile(s_memFile[file], buffer, length, &length, NULL);
static bool s_skip;
if (showDialog && !s_skip && !ErrorGetOption(kErrOptNonGuiAsserts)) {
s_skip = IDOK != MessageBox(
NULL,
buffer,
s_memDlgTitle[file],
MB_ICONSTOP | MB_SETFOREGROUND | MB_TASKMODAL | MB_OKCANCEL
);
}
#else
fputs(buffer, stderr);
#endif
}
#endif
//============================================================================
#ifdef MEM_DEBUG
static void __cdecl MemDumpCallback (void * mem, void * param) {
const _CrtMemBlockHeader * pHead = pHdr(mem);
MemDumpParam * dumpParam = (MemDumpParam *) param;
char filename[MAX_PATH];
ConvertFilename(
pHead->szFileName,
arrsize(filename),
filename
);
// HACK: Don't report array memory leaks since these underly the hash
// table type and may not be cleaned up until after the mem leak
// checker runs. =(
if (strstr(filename, "pnUtArray"))
return;
ReportMem(
dumpParam->file,
dumpParam->showDialog,
"Offset %p size %u at %s:%d\r\n",
mem,
pHead->nDataSize,
filename,
pHead->nLine
);
}
#endif // MEM_DEBUG
//============================================================================
#ifdef MEM_DEBUG
static void __cdecl OnExitMemDumpCallback (void * mem, size_t) {
static MemDumpParam param = { kMemLeaks, true };
if (!ErrorGetOption(kErrOptDisableMemLeakChecking))
MemDumpCallback(mem, &param);
}
#endif // MEM_DEBUG
//===========================================================================
#ifdef MEM_DEBUG
static void __cdecl CheckLeaksOnExit () {
if (!ErrorGetOption(kErrOptDisableMemLeakChecking)) {
MemDumpParam param;
param.file = kMemLeaks;
param.showDialog = true;
_CrtDoForAllClientObjects(MemDumpCallback, &param);
}
}
#endif // MEM_DEBUG
//============================================================================
#ifdef MEM_DEBUG
static int __cdecl CrtAllocHook (
int method,
void * pUserData,
size_t nSize,
int nBlockUse,
long lRequest,
const unsigned char * szFileName,
int nLine
) {
if (nBlockUse == _NORMAL_BLOCK) {
int xx = 0;
}
return 1;
}
#endif // MEM_DEBUG
//===========================================================================
#ifdef MEM_DEBUG
AUTO_INIT_FUNC(hsExeMallocInit) {
// The critical section has to be initialized
// before program startup and never freed
static byte rawMemory[sizeof CCritSect];
s_critsect = new(rawMemory) CCritSect;
SET_CRT_DEBUG_FIELD(_CRTDBG_LEAK_CHECK_DF);
_CrtSetAllocHook(CrtAllocHook);
_CrtSetDumpClient(OnExitMemDumpCallback);
// atexit(CheckLeaksOnExit);
}
#endif // MEM_DEBUG
/*****************************************************************************
*
* Module functions
*
***/
//============================================================================
void MemSetLeakChecking (bool on) {
if (on)
SET_CRT_DEBUG_FIELD(_CRTDBG_LEAK_CHECK_DF);
else
CLEAR_CRT_DEBUG_FIELD(_CRTDBG_LEAK_CHECK_DF);
}
} using namespace ExeMalloc;
/****************************************************************************
*
* Exports
*
***/
//============================================================================
void MemDumpAllocReport () {
#ifdef MEM_DEBUG
MemDumpParam param;
param.file = kMemAllocs;
param.showDialog = true;
_CrtDoForAllClientObjects(MemDumpCallback, &param);
#endif // MEM_DEBUG
}
//============================================================================
void MemDumpUsageReport () {
#ifdef MEM_DEBUG
#endif // MEM_DEBUG
}
//============================================================================
void MemValidateNow () {
#ifdef MEM_DEBUG
#endif // MEM_DEBUG
}
//============================================================================
void MemSetValidation (unsigned on) {
#ifdef MEM_DEBUG
#endif // MEM_DEBUG
}
//============================================================================
void MemPushDisableTracking () {
#ifdef MEM_DEBUG
++s_memCheckOff;
#endif // MEM_DEBUG
}
//============================================================================
void MemPopDisableTracking () {
#ifdef MEM_DEBUG
ASSERT(s_memCheckOff);
--s_memCheckOff;
#endif // MEM_DEBUG
}
//============================================================================
void MemSetColor (unsigned short color) {
#ifdef MEM_DEBUG
s_memColor = color & 0xFFFF;
#endif // MEM_DEBUG
}
//===========================================================================
void * MemAlloc (unsigned bytes, unsigned flags, const char file[], int line) {
#ifdef MEM_DEBUG
unsigned block;
if (flags & kMemIgnoreBlock || s_memCheckOff)
block = _IGNORE_BLOCK;
else
block = _CLIENT_BLOCK | (s_memColor << 16);
#endif // MEM_DEBUG
#ifdef MEM_DEBUG
if (s_critsect)
s_critsect->Enter();
if (block == _IGNORE_BLOCK)
CLEAR_CRT_DEBUG_FIELD(_CRTDBG_ALLOC_MEM_DF);
#endif
void * ptr = (flags & kMemZero)
? _calloc_dbg(bytes, 1, block, file, line)
: _malloc_dbg(bytes, block, file, line);
#ifdef MEM_DEBUG
if (block == _IGNORE_BLOCK)
SET_CRT_DEBUG_FIELD(_CRTDBG_ALLOC_MEM_DF);
if (s_critsect)
s_critsect->Leave();
#endif
if (!ptr)
ErrorFatal(__LINE__, __FILE__, "Out of memory");
// In debug mode ensure that memory is initialized to some freaky value
#ifdef HS_DEBUGGING
if (! (flags & kMemZero))
MemSet(ptr, (byte) ((unsigned_ptr)ptr >> 4), bytes);
#endif
#ifdef _MSC_VER
// Compiler specific:
// Adding this line causes MSVC to stop assuming that memory allocation
// can fail thus producing more efficient assembler code.
__assume(ptr);
#endif
// return the allocated buffer
return ptr;
}
//============================================================================
void MemFree (void * ptr, unsigned flags) {
if (!ptr)
return;
#ifdef MEM_DEBUG
const _CrtMemBlockHeader * pHead = pHdr(ptr);
unsigned block = pHead->nBlockUse;
#endif // MEM_DEBUG
_free_dbg(ptr, block);
}
//===========================================================================
void * MemRealloc (void * ptr, unsigned bytes, unsigned flags, const char file[], int line) {
#ifdef HS_DEBUGGING
unsigned oldBytes = ptr ? MemSize(ptr) : 0;
#endif
#ifdef MEM_DEBUG
unsigned block;
if (flags & kMemIgnoreBlock || s_memCheckOff)
block = _IGNORE_BLOCK;
else
block = _CLIENT_BLOCK | (s_memColor << 16);
#endif
void * newPtr = nil;
#ifdef MEM_DEBUG
if (s_critsect)
s_critsect->Enter();
if (block == _IGNORE_BLOCK)
CLEAR_CRT_DEBUG_FIELD(_CRTDBG_ALLOC_MEM_DF);
#endif
for (;;) {
if (flags & kMemReallocInPlaceOnly) {
#ifndef MEM_DEBUG
break;
#else
newPtr = _expand_dbg(ptr, bytes, block, file, line);
// expand can succeed without making the block big enough -- check for this case!
if (!newPtr || _msize_dbg(newPtr, block) < bytes)
break;
#endif // MEM_DEBUG
}
else if (!bytes) {
newPtr = _malloc_dbg(0, block, file, line);
_free_dbg(ptr, block);
}
else {
newPtr = _realloc_dbg(ptr, bytes, block, file, line);
}
if (!newPtr)
ErrorFatal(__LINE__, __FILE__, "Out of memory");
break;
}
#ifdef MEM_DEBUG
if (block == _IGNORE_BLOCK)
SET_CRT_DEBUG_FIELD(_CRTDBG_ALLOC_MEM_DF);
if (s_critsect)
s_critsect->Leave();
#endif
/* This code doesn't work because the memory manager may have "rounded" the size
* of a previous allocation upward to keep it aligned. Therefore, the tail of
* the memory block may be initialized with garbage instead of zeroes, and the
* realloc call actually copied that memory.
if ((bytes > oldBytes) && (flags & kMemZero))
MemZero((byte *)newPtr + oldBytes, bytes - oldBytes);
*/
ASSERT(!(flags & kMemZero));
// In debug mode ensure that memory is initialized to some freaky value
#ifdef HS_DEBUGGING
if ((bytes > oldBytes) && !(flags & kMemZero))
MemSet((byte *)newPtr + oldBytes, (byte) ((unsigned_ptr) newPtr >> 4), bytes - oldBytes);
#endif
return newPtr;
}
//===========================================================================
unsigned MemSize (void * ptr) {
ASSERT(ptr);
unsigned result;
#ifdef MEM_DEBUG
const _CrtMemBlockHeader * pHead = pHdr(ptr);
unsigned block = pHead->nBlockUse;
#endif
result = (unsigned)_msize_dbg(ptr, block);
return result;
}
//===========================================================================
int MemCmp (const void * buf1, const void * buf2, unsigned bytes) {
return memcmp(buf1, buf2, bytes);
}
//===========================================================================
void MemCopy (void * dest, const void * source, unsigned bytes) {
memcpy(dest, source, bytes);
}
//===========================================================================
void MemMove (void * dest, const void * source, unsigned bytes) {
memmove(dest, source, bytes);
}
//===========================================================================
void MemSet (void * dest, unsigned value, unsigned bytes) {
memset(dest, value, bytes);
}
//===========================================================================
void MemZero (void * dest, unsigned bytes) {
memset(dest, 0, bytes);
}
//===========================================================================
void * MemDup (const void * ptr, unsigned bytes, unsigned flags, const char file[], int line) {
void * dst = MemAlloc(bytes, flags, file, line);
MemCopy(dst, ptr, bytes);
return dst;
}