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/**********************************************************************
*
* StackWalker.h
*
*
*
* $LicenseInfo:firstyear=2016&license=bsd$
*
* Linden notes: Small modifications from the original source at https://stackwalker.codeplex.com/
*
* LICENSE (http://www.opensource.org/licenses/bsd-license.php)
*
* Copyright (c) 2005-2009, Jochen Kalmbach
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* Neither the name of Jochen Kalmbach nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* **********************************************************************/
#if LL_WINDOWS
// #pragma once is supported starting with _MCS_VER 1000,
// so we need not to check the version (because we only support _MSC_VER >= 1100)!
#pragma once
#include <windows.h>
// special defines for VC5/6 (if no actual PSDK is installed):
#if _MSC_VER < 1300
typedef unsigned __int64 DWORD64, *PDWORD64;
#if defined(_WIN64)
typedef unsigned __int64 SIZE_T, *PSIZE_T;
#else
typedef unsigned long SIZE_T, *PSIZE_T;
#endif
#endif // _MSC_VER < 1300
class StackWalkerInternal; // forward
class StackWalker
{
public:
typedef enum StackWalkOptions
{
// No addition info will be retrived
// (only the address is available)
RetrieveNone = 0,
// Try to get the symbol-name
RetrieveSymbol = 1,
// Try to get the line for this symbol
RetrieveLine = 2,
// Try to retrieve the module-infos
RetrieveModuleInfo = 4,
// Also retrieve the version for the DLL/EXE
RetrieveFileVersion = 8,
// Contains all the abouve
RetrieveVerbose = 0xF,
// Generate a "good" symbol-search-path
SymBuildPath = 0x10,
// Also use the public Microsoft-Symbol-Server
SymUseSymSrv = 0x20,
// Contains all the abouve "Sym"-options
SymAll = 0x30,
// Contains all options (default)
OptionsAll = 0x3F
} StackWalkOptions;
StackWalker(
bool verbose = true,
int options = OptionsAll, // 'int' is by design, to combine the enum-flags
LPCSTR szSymPath = NULL,
DWORD dwProcessId = GetCurrentProcessId(),
HANDLE hProcess = GetCurrentProcess()
);
StackWalker(DWORD dwProcessId, HANDLE hProcess);
virtual ~StackWalker();
typedef BOOL (__stdcall *PReadProcessMemoryRoutine)(
HANDLE hProcess,
DWORD64 qwBaseAddress,
PVOID lpBuffer,
DWORD nSize,
LPDWORD lpNumberOfBytesRead,
LPVOID pUserData // optional data, which was passed in "ShowCallstack"
);
bool LoadModules();
bool ShowCallstack(
bool verbose,
HANDLE hThread = GetCurrentThread(),
const CONTEXT *context = NULL,
PReadProcessMemoryRoutine readMemoryFunction = NULL,
LPVOID pUserData = NULL // optional to identify some data in the 'readMemoryFunction'-callback
);
#if _MSC_VER >= 1300
// due to some reasons, the "STACKWALK_MAX_NAMELEN" must be declared as "public"
// in older compilers in order to use it... starting with VC7 we can declare it as "protected"
protected:
#endif
enum { STACKWALK_MAX_NAMELEN = 4096 }; // max name length for found symbols
protected:
// Entry for each Callstack-Entry
typedef struct CallstackEntry
{
DWORD64 offset; // if 0, we have no valid entry
CHAR name[STACKWALK_MAX_NAMELEN];
CHAR undName[STACKWALK_MAX_NAMELEN];
CHAR undFullName[STACKWALK_MAX_NAMELEN];
DWORD64 offsetFromSmybol;
DWORD offsetFromLine;
DWORD lineNumber;
CHAR lineFileName[STACKWALK_MAX_NAMELEN];
DWORD symType;
LPCSTR symTypeString;
CHAR moduleName[STACKWALK_MAX_NAMELEN];
DWORD64 baseOfImage;
CHAR loadedImageName[STACKWALK_MAX_NAMELEN];
} CallstackEntry;
enum CallstackEntryType {firstEntry, nextEntry, lastEntry};
virtual void OnSymInit(LPCSTR szSearchPath, DWORD symOptions, LPCSTR szUserName);
virtual void OnLoadModule(LPCSTR img, LPCSTR mod, DWORD64 baseAddr, DWORD size, DWORD result, LPCSTR symType, LPCSTR pdbName, ULONGLONG fileVersion);
virtual void OnCallstackEntry(CallstackEntryType eType, CallstackEntry &entry);
virtual void OnDbgHelpErr(LPCSTR szFuncName, DWORD gle, DWORD64 addr);
virtual void OnOutput(LPCSTR szText);
StackWalkerInternal *m_sw;
HANDLE m_hProcess;
DWORD m_dwProcessId;
bool m_modulesLoaded;
LPSTR m_szSymPath;
bool m_verbose;
int m_options;
int m_MaxRecursionCount;
static BOOL __stdcall myReadProcMem(HANDLE hProcess, DWORD64 qwBaseAddress, PVOID lpBuffer, DWORD nSize, LPDWORD lpNumberOfBytesRead);
friend StackWalkerInternal;
}; // class StackWalker
// The "ugly" assembler-implementation is needed for systems before XP
// If you have a new PSDK and you only compile for XP and later, then you can use
// the "RtlCaptureContext"
// Currently there is no define which determines the PSDK-Version...
// So we just use the compiler-version (and assumes that the PSDK is
// the one which was installed by the VS-IDE)
// INFO: If you want, you can use the RtlCaptureContext if you only target XP and later...
// But I currently use it in x64/IA64 environments...
//#if defined(_M_IX86) && (_WIN32_WINNT <= 0x0500) && (_MSC_VER < 1400)
#if defined(_M_IX86)
#ifdef CURRENT_THREAD_VIA_EXCEPTION
// TODO: The following is not a "good" implementation,
// because the callstack is only valid in the "__except" block...
#define GET_CURRENT_CONTEXT_STACKWALKER_CODEPLEX(c, contextFlags) \
do { \
memset(&c, 0, sizeof(CONTEXT)); \
EXCEPTION_POINTERS *pExp = NULL; \
__try { \
throw 0; \
} __except( ( (pExp = GetExceptionInformation()) ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_EXECUTE_HANDLER)) {} \
if (pExp != NULL) \
memcpy(&c, pExp->ContextRecord, sizeof(CONTEXT)); \
c.ContextFlags = contextFlags; \
} while(0);
#else
// The following should be enough for walking the callstack...
#define GET_CURRENT_CONTEXT_STACKWALKER_CODEPLEX(c, contextFlags) \
do { \
memset(&c, 0, sizeof(CONTEXT)); \
c.ContextFlags = contextFlags; \
__asm call x \
__asm x: pop eax \
__asm mov c.Eip, eax \
__asm mov c.Ebp, ebp \
__asm mov c.Esp, esp \
} while(0);
#endif
#else
// The following is defined for x86 (XP and higher), x64 and IA64:
#define GET_CURRENT_CONTEXT_STACKWALKER_CODEPLEX(c, contextFlags) \
do { \
memset(&c, 0, sizeof(CONTEXT)); \
c.ContextFlags = contextFlags; \
RtlCaptureContext(&c); \
} while(0);
#endif
#endif // LL_WINDOWS
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