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Remove nsTraceRefcnt::LoadLibrarySymbols, which is no longer needed due to the error handling in SymGetModuleInfoEspecial. b=391793 r+a=bsmedberg

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dbaron%dbaron.org 2007-08-13 19:36:57 +00:00
Родитель 91bb6171c7
Коммит fcb9984a4e
4 изменённых файлов: 0 добавлений и 939 удалений
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865
xpcom/base/nsStackFrameWin.cpp
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@ -1,865 +0,0 @@
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is nsStackFrameWin.h code, released
* December 20, 2003.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2003
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Michael Judge, 20-December-2000
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nscore.h"
#include <windows.h>
#include <stdio.h>
#include "nsStackFrameWin.h"
#include "plstr.h"
// Define these as static pointers so that we can load the DLL on the
// fly (and not introduce a link-time dependency on it). Tip o' the
// hat to Matt Pietrick for this idea. See:
//
// http://msdn.microsoft.com/library/periodic/period97/F1/D3/S245C6.htm
//
PR_BEGIN_EXTERN_C
SYMSETOPTIONSPROC _SymSetOptions;
SYMINITIALIZEPROC _SymInitialize;
SYMCLEANUPPROC _SymCleanup;
STACKWALKPROC _StackWalk;
#ifdef USING_WXP_VERSION
STACKWALKPROC64 _StackWalk64;
#else
#define _StackWalk64 0
#endif
SYMFUNCTIONTABLEACCESSPROC _SymFunctionTableAccess;
#ifdef USING_WXP_VERSION
SYMFUNCTIONTABLEACCESSPROC64 _SymFunctionTableAccess64;
#else
#define _SymFunctionTableAccess64 0
#endif
SYMGETMODULEBASEPROC _SymGetModuleBase;
#ifdef USING_WXP_VERSION
SYMGETMODULEBASEPROC64 _SymGetModuleBase64;
#else
#define _SymGetModuleBase64 0
#endif
SYMGETSYMFROMADDRPROC _SymGetSymFromAddr;
#ifdef USING_WXP_VERSION
SYMFROMADDRPROC _SymFromAddr;
#else
#define _SymFromAddr 0
#endif
SYMLOADMODULE _SymLoadModule;
#ifdef USING_WXP_VERSION
SYMLOADMODULE64 _SymLoadModule64;
#else
#define _SymLoadModule64 0
#endif
SYMUNDNAME _SymUnDName;
SYMGETMODULEINFO _SymGetModuleInfo;
#ifdef USING_WXP_VERSION
SYMGETMODULEINFO64 _SymGetModuleInfo64;
#else
#define _SymGetModuleInfo64 0
#endif
ENUMLOADEDMODULES _EnumerateLoadedModules;
#ifdef USING_WXP_VERSION
ENUMLOADEDMODULES64 _EnumerateLoadedModules64;
#else
#define _EnumerateLoadedModules64 0
#endif
SYMGETLINEFROMADDRPROC _SymGetLineFromAddr;
#ifdef USING_WXP_VERSION
SYMGETLINEFROMADDRPROC64 _SymGetLineFromAddr64;
#else
#define _SymGetLineFromAddr64 0
#endif
HANDLE hStackWalkMutex;
PR_END_EXTERN_C
// Routine to print an error message to standard error.
// Will also call callback with error, if data supplied.
void PrintError(char *prefix)
{
LPVOID lpMsgBuf;
DWORD lastErr = GetLastError();
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
lastErr,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL
);
fprintf(stderr, "### ERROR: %s: %s", prefix, lpMsgBuf);
fflush(stderr);
LocalFree( lpMsgBuf );
}
PRBool
EnsureImageHlpInitialized()
{
static PRBool gInitialized = PR_FALSE;
if (gInitialized)
return gInitialized;
// Create a mutex with no initial owner.
hStackWalkMutex = CreateMutex(
NULL, // default security attributes
FALSE, // initially not owned
NULL); // unnamed mutex
if (hStackWalkMutex == NULL) {
PrintError("CreateMutex");
return PR_FALSE;
}
HMODULE module = ::LoadLibrary("DBGHELP.DLL");
if (!module) {
module = ::LoadLibrary("IMAGEHLP.DLL");
if (!module) return PR_FALSE;
}
_SymSetOptions = (SYMSETOPTIONSPROC) ::GetProcAddress(module, "SymSetOptions");
if (!_SymSetOptions) return PR_FALSE;
_SymInitialize = (SYMINITIALIZEPROC) ::GetProcAddress(module, "SymInitialize");
if (!_SymInitialize) return PR_FALSE;
_SymCleanup = (SYMCLEANUPPROC)GetProcAddress(module, "SymCleanup");
if (!_SymCleanup) return PR_FALSE;
#ifdef USING_WXP_VERSION
_StackWalk64 = (STACKWALKPROC64)GetProcAddress(module, "StackWalk64");
#endif
_StackWalk = (STACKWALKPROC)GetProcAddress(module, "StackWalk");
if (!_StackWalk64 && !_StackWalk) return PR_FALSE;
#ifdef USING_WXP_VERSION
_SymFunctionTableAccess64 = (SYMFUNCTIONTABLEACCESSPROC64) GetProcAddress(module, "SymFunctionTableAccess64");
#endif
_SymFunctionTableAccess = (SYMFUNCTIONTABLEACCESSPROC) GetProcAddress(module, "SymFunctionTableAccess");
if (!_SymFunctionTableAccess64 && !_SymFunctionTableAccess) return PR_FALSE;
#ifdef USING_WXP_VERSION
_SymGetModuleBase64 = (SYMGETMODULEBASEPROC64)GetProcAddress(module, "SymGetModuleBase64");
#endif
_SymGetModuleBase = (SYMGETMODULEBASEPROC)GetProcAddress(module, "SymGetModuleBase");
if (!_SymGetModuleBase64 && !_SymGetModuleBase) return PR_FALSE;
_SymGetSymFromAddr = (SYMGETSYMFROMADDRPROC)GetProcAddress(module, "SymGetSymFromAddr");
#ifdef USING_WXP_VERSION
_SymFromAddr = (SYMFROMADDRPROC)GetProcAddress(module, "SymFromAddr");
#endif
if (!_SymFromAddr && !_SymGetSymFromAddr) return PR_FALSE;
#ifdef USING_WXP_VERSION
_SymLoadModule64 = (SYMLOADMODULE64)GetProcAddress(module, "SymLoadModule64");
#endif
_SymLoadModule = (SYMLOADMODULE)GetProcAddress(module, "SymLoadModule");
if (!_SymLoadModule64 && !_SymLoadModule) return PR_FALSE;
_SymUnDName = (SYMUNDNAME)GetProcAddress(module, "SymUnDName");
if (!_SymUnDName) return PR_FALSE;
#ifdef USING_WXP_VERSION
_SymGetModuleInfo64 = (SYMGETMODULEINFO64)GetProcAddress(module, "SymGetModuleInfo64");
#endif
_SymGetModuleInfo = (SYMGETMODULEINFO)GetProcAddress(module, "SymGetModuleInfo");
if (!_SymGetModuleInfo64 && !_SymGetModuleInfo) return PR_FALSE;
#ifdef USING_WXP_VERSION
_EnumerateLoadedModules64 = (ENUMLOADEDMODULES64)GetProcAddress(module, "EnumerateLoadedModules64");
#endif
_EnumerateLoadedModules = (ENUMLOADEDMODULES)GetProcAddress(module, "EnumerateLoadedModules");
if (!_EnumerateLoadedModules64 && !_EnumerateLoadedModules) return PR_FALSE;
#ifdef USING_WXP_VERSION
_SymGetLineFromAddr64 = (SYMGETLINEFROMADDRPROC64)GetProcAddress(module, "SymGetLineFromAddr64");
#endif
_SymGetLineFromAddr = (SYMGETLINEFROMADDRPROC)GetProcAddress(module, "SymGetLineFromAddr");
if (!_SymGetLineFromAddr64 && !_SymGetLineFromAddr) return PR_FALSE;
return gInitialized = PR_TRUE;
}
static BOOL CALLBACK callbackEspecial(
LPSTR aModuleName,
DWORD aModuleBase,
ULONG aModuleSize,
PVOID aUserContext)
{
BOOL retval = TRUE;
DWORD addr = *(DWORD*)aUserContext;
/*
* You'll want to control this if we are running on an
* architecture where the addresses go the other direction.
* Not sure this is even a realistic consideration.
*/
const BOOL addressIncreases = TRUE;
/*
* If it falls inside the known range, load the symbols.
*/
if (addressIncreases
? (addr >= aModuleBase && addr <= (aModuleBase + aModuleSize))
: (addr <= aModuleBase && addr >= (aModuleBase - aModuleSize))
) {
retval = _SymLoadModule(GetCurrentProcess(), NULL, aModuleName, NULL, aModuleBase, aModuleSize);
}
return retval;
}
static BOOL CALLBACK callbackEspecial64(
PTSTR aModuleName,
DWORD64 aModuleBase,
ULONG aModuleSize,
PVOID aUserContext)
{
#ifdef USING_WXP_VERSION
BOOL retval = TRUE;
DWORD64 addr = *(DWORD64*)aUserContext;
/*
* You'll want to control this if we are running on an
* architecture where the addresses go the other direction.
* Not sure this is even a realistic consideration.
*/
const BOOL addressIncreases = TRUE;
/*
* If it falls in side the known range, load the symbols.
*/
if (addressIncreases
? (addr >= aModuleBase && addr <= (aModuleBase + aModuleSize))
: (addr <= aModuleBase && addr >= (aModuleBase - aModuleSize))
) {
retval = _SymLoadModule64(GetCurrentProcess(), NULL, aModuleName, NULL, aModuleBase, aModuleSize);
}
return retval;
#else
return FALSE;
#endif
}
/*
* SymGetModuleInfoEspecial
*
* Attempt to determine the module information.
* Bug 112196 says this DLL may not have been loaded at the time
* SymInitialize was called, and thus the module information
* and symbol information is not available.
* This code rectifies that problem.
*/
BOOL SymGetModuleInfoEspecial(HANDLE aProcess, DWORD aAddr, PIMAGEHLP_MODULE aModuleInfo, PIMAGEHLP_LINE aLineInfo)
{
BOOL retval = FALSE;
/*
* Init the vars if we have em.
*/
aModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE);
if (nsnull != aLineInfo) {
aLineInfo->SizeOfStruct = sizeof(IMAGEHLP_LINE);
}
/*
* Give it a go.
* It may already be loaded.
*/
retval = _SymGetModuleInfo(aProcess, aAddr, aModuleInfo);
if (FALSE == retval) {
BOOL enumRes = FALSE;
/*
* Not loaded, here's the magic.
* Go through all the modules.
*/
enumRes = _EnumerateLoadedModules(aProcess, (PENUMLOADED_MODULES_CALLBACK)callbackEspecial, (PVOID)&aAddr);
if (FALSE != enumRes)
{
/*
* One final go.
* If it fails, then well, we have other problems.
*/
retval = _SymGetModuleInfo(aProcess, aAddr, aModuleInfo);
}
}
/*
* If we got module info, we may attempt line info as well.
* We will not report failure if this does not work.
*/
if (FALSE != retval && nsnull != aLineInfo && nsnull != _SymGetLineFromAddr) {
DWORD displacement = 0;
BOOL lineRes = FALSE;
lineRes = _SymGetLineFromAddr(aProcess, aAddr, &displacement, aLineInfo);
}
return retval;
}
#ifdef USING_WXP_VERSION
BOOL SymGetModuleInfoEspecial64(HANDLE aProcess, DWORD64 aAddr, PIMAGEHLP_MODULE64 aModuleInfo, PIMAGEHLP_LINE64 aLineInfo)
{
BOOL retval = FALSE;
/*
* Init the vars if we have em.
*/
aModuleInfo->SizeOfStruct = sizeof(IMAGEHLP_MODULE64);
if (nsnull != aLineInfo) {
aLineInfo->SizeOfStruct = sizeof(IMAGEHLP_LINE64);
}
/*
* Give it a go.
* It may already be loaded.
*/
retval = _SymGetModuleInfo64(aProcess, aAddr, aModuleInfo);
if (FALSE == retval) {
BOOL enumRes = FALSE;
/*
* Not loaded, here's the magic.
* Go through all the modules.
*/
enumRes = _EnumerateLoadedModules64(aProcess, (PENUMLOADED_MODULES_CALLBACK64)callbackEspecial64, (PVOID)&aAddr);
if (FALSE != enumRes)
{
/*
* One final go.
* If it fails, then well, we have other problems.
*/
retval = _SymGetModuleInfo64(aProcess, aAddr, aModuleInfo);
}
}
/*
* If we got module info, we may attempt line info as well.
* We will not report failure if this does not work.
*/
if (FALSE != retval && nsnull != aLineInfo && nsnull != _SymGetLineFromAddr64) {
DWORD displacement = 0;
BOOL lineRes = FALSE;
lineRes = _SymGetLineFromAddr64(aProcess, aAddr, &displacement, aLineInfo);
}
return retval;
}
#endif
HANDLE
GetCurrentPIDorHandle()
{
if (_SymGetModuleBase64)
return GetCurrentProcess(); // winxp and friends use process handle
return (HANDLE) GetCurrentProcessId(); // winme win98 win95 etc use process identifier
}
PRBool
EnsureSymInitialized()
{
static PRBool gInitialized = PR_FALSE;
PRBool retStat;
if (gInitialized)
return gInitialized;
if (!EnsureImageHlpInitialized())
return PR_FALSE;
_SymSetOptions(SYMOPT_LOAD_LINES | SYMOPT_UNDNAME);
retStat = _SymInitialize(GetCurrentPIDorHandle(), NULL, TRUE);
if (!retStat)
PrintError("SymInitialize");
gInitialized = retStat;
/* XXX At some point we need to arrange to call _SymCleanup */
return retStat;
}
/**
* Walk the stack, translating PC's found into strings and recording the
* chain in aBuffer. For this to work properly, the DLLs must be rebased
* so that the address in the file agrees with the address in memory.
* Otherwise StackWalk will return FALSE when it hits a frame in a DLL
* whose in memory address doesn't match its in-file address.
*/
EXPORT_XPCOM_API(nsresult)
NS_StackWalk(NS_WalkStackCallback aCallback, PRUint32 aSkipFrames,
void *aClosure)
{
HANDLE myProcess, myThread, walkerThread;
DWORD walkerReturn;
struct WalkStackData data;
if (!EnsureSymInitialized())
return NS_ERROR_FAILURE;
// Have to duplicate handle to get a real handle.
if (!::DuplicateHandle(::GetCurrentProcess(),
::GetCurrentProcess(),
::GetCurrentProcess(),
&myProcess,
THREAD_ALL_ACCESS, FALSE, 0)) {
PrintError("DuplicateHandle (process)");
return NS_ERROR_FAILURE;
}
if (!::DuplicateHandle(::GetCurrentProcess(),
::GetCurrentThread(),
::GetCurrentProcess(),
&myThread,
THREAD_ALL_ACCESS, FALSE, 0)) {
PrintError("DuplicateHandle (thread)");
::CloseHandle(myProcess);
return NS_ERROR_FAILURE;
}
data.callback = aCallback;
data.skipFrames = aSkipFrames;
data.closure = aClosure;
data.thread = myThread;
data.process = myProcess;
walkerThread = ::CreateThread( NULL, 0, WalkStackThread, (LPVOID) &data, 0, NULL ) ;
if (walkerThread) {
walkerReturn = ::WaitForSingleObject(walkerThread, 2000); // no timeout is never a good idea
if (walkerReturn != WAIT_OBJECT_0) {
PrintError("ThreadWait");
}
::CloseHandle(walkerThread);
}
else {
PrintError("ThreadCreate");
}
::CloseHandle(myThread);
::CloseHandle(myProcess);
return NS_OK;
}
DWORD WINAPI
WalkStackThread(LPVOID lpdata)
{
struct WalkStackData *data = (WalkStackData *)lpdata;
DWORD ret ;
// Suspend the calling thread, dump his stack, and then resume him.
// He's currently waiting for us to finish so now should be a good time.
ret = ::SuspendThread( data->thread );
if (ret == -1) {
PrintError("ThreadSuspend");
}
else {
if (_StackWalk64)
WalkStackMain64(data);
else
WalkStackMain(data);
ret = ::ResumeThread(data->thread);
if (ret == -1) {
PrintError("ThreadResume");
}
}
return 0;
}
void
WalkStackMain64(struct WalkStackData* data)
{
#ifdef USING_WXP_VERSION
// Get the context information for the thread. That way we will
// know where our sp, fp, pc, etc. are and can fill in the
// STACKFRAME64 with the initial values.
CONTEXT context;
HANDLE myProcess = data->process;
HANDLE myThread = data->thread;
DWORD64 addr;
STACKFRAME64 frame64;
int skip = 3 + data->skipFrames; // skip our own stack walking frames
BOOL ok;
// Get a context for the specified thread.
memset(&context, 0, sizeof(CONTEXT));
context.ContextFlags = CONTEXT_FULL;
if (!GetThreadContext(myThread, &context)) {
PrintError("GetThreadContext");
return;
}
// Setup initial stack frame to walk from
memset(&frame64, 0, sizeof(frame64));
#ifdef _M_IX86
frame64.AddrPC.Offset = context.Eip;
frame64.AddrStack.Offset = context.Esp;
frame64.AddrFrame.Offset = context.Ebp;
#elif defined _M_AMD64
frame64.AddrPC.Offset = context.Rip;
frame64.AddrStack.Offset = context.Rsp;
frame64.AddrFrame.Offset = context.Rbp;
#elif defined _M_IA64
frame64.AddrPC.Offset = context.StIIP;
frame64.AddrStack.Offset = context.SP;
frame64.AddrFrame.Offset = context.RsBSP;
#else
PrintError("Unknown platform. No stack walking.");
return;
#endif
frame64.AddrPC.Mode = AddrModeFlat;
frame64.AddrStack.Mode = AddrModeFlat;
frame64.AddrFrame.Mode = AddrModeFlat;
frame64.AddrReturn.Mode = AddrModeFlat;
// Now walk the stack and map the pc's to symbol names
while (1) {
ok = 0;
// stackwalk is not threadsafe, so grab the lock.
DWORD dwWaitResult;
dwWaitResult = WaitForSingleObject(hStackWalkMutex, INFINITE);
if (dwWaitResult == WAIT_OBJECT_0) {
ok = _StackWalk64(
#ifdef _M_AMD64
IMAGE_FILE_MACHINE_AMD64,
#elif defined _M_IA64
IMAGE_FILE_MACHINE_IA64,
#elif defined _M_IX86
IMAGE_FILE_MACHINE_I386,
#else
0,
#endif
myProcess,
myThread,
&frame64,
&context,
NULL,
_SymFunctionTableAccess64, // function table access routine
_SymGetModuleBase64, // module base routine
0
);
ReleaseMutex(hStackWalkMutex); // release our lock
if (ok)
addr = frame64.AddrPC.Offset;
else {
addr = 0;
PrintError("WalkStack64");
}
if (!ok || (addr == 0)) {
break;
}
if (skip-- > 0) {
continue;
}
(*data->callback)((void*)addr, data->closure);
#if 0
// Stop walking when we get to kernel32.
if (strcmp(modInfo.ModuleName, "kernel32") == 0)
break;
#else
if (frame64.AddrReturn.Offset == 0)
break;
#endif
}
else {
PrintError("LockError64");
}
}
return;
#endif
}
void
WalkStackMain(struct WalkStackData* data)
{
// Get the context information for the thread. That way we will
// know where our sp, fp, pc, etc. are and can fill in the
// STACKFRAME with the initial values.
CONTEXT context;
HANDLE myProcess = data->process;
HANDLE myThread = data->thread;
DWORD addr;
STACKFRAME frame;
int skip = data->skipFrames; // skip our own stack walking frames
BOOL ok;
// Get a context for the specified thread.
memset(&context, 0, sizeof(CONTEXT));
context.ContextFlags = CONTEXT_FULL;
if (!GetThreadContext(myThread, &context)) {
PrintError("GetThreadContext");
return;
}
// Setup initial stack frame to walk from
#if defined _M_IX86
memset(&frame, 0, sizeof(frame));
frame.AddrPC.Offset = context.Eip;
frame.AddrPC.Mode = AddrModeFlat;
frame.AddrStack.Offset = context.Esp;
frame.AddrStack.Mode = AddrModeFlat;
frame.AddrFrame.Offset = context.Ebp;
frame.AddrFrame.Mode = AddrModeFlat;
#else
PrintError("Unknown platform. No stack walking.");
return;
#endif
// Now walk the stack and map the pc's to symbol names
while (1) {
ok = 0;
// debug routines are not threadsafe, so grab the lock.
DWORD dwWaitResult;
dwWaitResult = WaitForSingleObject(hStackWalkMutex, INFINITE);
if (dwWaitResult == WAIT_OBJECT_0) {
ok = _StackWalk(
IMAGE_FILE_MACHINE_I386,
myProcess,
myThread,
&frame,
&context,
0, // read process memory routine
_SymFunctionTableAccess, // function table access routine
_SymGetModuleBase, // module base routine
0 // translate address routine
);
ReleaseMutex(hStackWalkMutex); // release our lock
if (ok)
addr = frame.AddrPC.Offset;
else {
addr = 0;
PrintError("WalkStack");
}
if (!ok || (addr == 0)) {
break;
}
if (skip-- > 0) {
continue;
}
(*data->callback)((void*)addr, data->closure);
#if 0
// Stop walking when we get to kernel32.dll.
if (strcmp(modInfo.ImageName, "kernel32.dll") == 0)
break;
#else
if (frame.AddrReturn.Offset == 0)
break;
#endif
}
else {
PrintError("LockError");
}
}
return;
}
EXPORT_XPCOM_API(nsresult)
NS_DescribeCodeAddress(void *aPC, nsCodeAddressDetails *aDetails)
{
aDetails->library[0] = '\0';
aDetails->loffset = 0;
aDetails->filename[0] = '\0';
aDetails->lineno = 0;
aDetails->function[0] = '\0';
aDetails->foffset = 0;
HANDLE myProcess = ::GetCurrentProcess();
BOOL ok;
// debug routines are not threadsafe, so grab the lock.
DWORD dwWaitResult;
dwWaitResult = WaitForSingleObject(hStackWalkMutex, INFINITE);
if (dwWaitResult != WAIT_OBJECT_0)
return NS_ERROR_UNEXPECTED;
#ifdef USING_WXP_VERSION
if (_StackWalk64) {
//
// Attempt to load module info before we attempt to resolve the symbol.
// This just makes sure we get good info if available.
//
DWORD64 addr = (DWORD64)aPC;
IMAGEHLP_MODULE64 modInfo;
modInfo.SizeOfStruct = sizeof(modInfo);
BOOL modInfoRes;
modInfoRes = SymGetModuleInfoEspecial64(myProcess, addr, &modInfo, nsnull);
if (modInfoRes) {
PL_strncpyz(aDetails->library, modInfo.ModuleName,
sizeof(aDetails->library));
aDetails->loffset = (char*) aPC - (char*) modInfo.BaseOfImage;
// XXX We could get filename/lineno information from
// SymGetModuleInfoEspecial64
}
ULONG64 buffer[(sizeof(SYMBOL_INFO) +
MAX_SYM_NAME*sizeof(TCHAR) + sizeof(ULONG64) - 1) / sizeof(ULONG64)];
PSYMBOL_INFO pSymbol = (PSYMBOL_INFO)buffer;
pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
pSymbol->MaxNameLen = MAX_SYM_NAME;
DWORD64 displacement;
ok = _SymFromAddr && _SymFromAddr(myProcess, addr, &displacement, pSymbol);
if (ok) {
PL_strncpyz(aDetails->function, pSymbol->Name,
sizeof(aDetails->function));
aDetails->foffset = displacement;
}
} else
#endif
{
//
// Attempt to load module info before we attempt to resolve the symbol.
// This just makes sure we get good info if available.
//
DWORD addr = (DWORD)aPC;
IMAGEHLP_MODULE modInfo;
modInfo.SizeOfStruct = sizeof(modInfo);
BOOL modInfoRes;
modInfoRes = SymGetModuleInfoEspecial(myProcess, addr, &modInfo, nsnull);
if (modInfoRes) {
PL_strncpyz(aDetails->library, modInfo.ModuleName,
sizeof(aDetails->library));
aDetails->loffset = (char*) aPC - (char*) modInfo.BaseOfImage;
// XXX We could get filename/lineno information from
// SymGetModuleInfoEspecial
}
#ifdef USING_WXP_VERSION
ULONG64 buffer[(sizeof(SYMBOL_INFO) +
MAX_SYM_NAME*sizeof(TCHAR) + sizeof(ULONG64) - 1) / sizeof(ULONG64)];
PSYMBOL_INFO pSymbol = (PSYMBOL_INFO)buffer;
pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
pSymbol->MaxNameLen = MAX_SYM_NAME;
DWORD64 displacement;
ok = _SymFromAddr && _SymFromAddr(myProcess, addr, &displacement, pSymbol);
#else
char buf[sizeof(IMAGEHLP_SYMBOL) + 512];
PIMAGEHLP_SYMBOL pSymbol = (PIMAGEHLP_SYMBOL) buf;
pSymbol->SizeOfStruct = sizeof(buf);
pSymbol->MaxNameLength = 512;
DWORD displacement;
ok = _SymGetSymFromAddr(myProcess,
frame.AddrPC.Offset,
&displacement,
pSymbol);
#endif
if (ok) {
PL_strncpyz(aDetails->function, pSymbol->Name,
sizeof(aDetails->function));
aDetails->foffset = displacement;
}
}
ReleaseMutex(hStackWalkMutex); // release our lock
return NS_OK;
}
EXPORT_XPCOM_API(nsresult)
NS_FormatCodeAddressDetails(void *aPC, const nsCodeAddressDetails *aDetails,
char *aBuffer, PRUint32 aBufferSize)
{
#ifdef USING_WXP_VERSION
if (_StackWalk64) {
if (aDetails->function[0])
_snprintf(aBuffer, aBufferSize, "%s!%s+0x%016lX\n",
aDetails->library, aDetails->function, aDetails->foffset);
else
_snprintf(aBuffer, aBufferSize, "0x%016lX\n", aPC);
} else {
#endif
if (aDetails->function[0])
_snprintf(aBuffer, aBufferSize, "%s!%s+0x%08lX\n",
aDetails->library, aDetails->function, aDetails->foffset);
else
_snprintf(aBuffer, aBufferSize, "0x%08lX\n", aPC);
#ifdef USING_WXP_VERSION
}
#endif
return NS_OK;
}

64
xpcom/base/nsTraceRefcntImpl.cpp
Просмотреть файл

@ -50,11 +50,6 @@
#include <math.h>
#include "nsStackWalk.h"
#if defined(_WIN32)
#include <windows.h>
#include "nsStackFrameWin.h" // XXX LoadLibrarySymbols no longer belongs here
#endif
#ifdef HAVE_LIBDL
#include <dlfcn.h>
#endif
@ -883,65 +878,6 @@ nsTraceRefcntImpl::DemangleSymbol(const char * aSymbol,
//----------------------------------------------------------------------
NS_COM void
nsTraceRefcntImpl::LoadLibrarySymbols(const char* aLibraryName,
void* aLibrayHandle)
{
#ifdef NS_IMPL_REFCNT_LOGGING
#if defined(_WIN32) && defined(_M_IX86) /* Win32 x86 only */
if (!gInitialized)
InitTraceLog();
if (gAllocLog || gRefcntsLog) {
fprintf(stdout, "### Loading symbols for %s\n", aLibraryName);
fflush(stdout);
HANDLE myProcess = ::GetCurrentProcess();
BOOL ok = EnsureSymInitialized();
if (ok) {
const char* baseName = aLibraryName;
// just get the base name of the library if a full path was given:
PRInt32 len = strlen(aLibraryName);
for (PRInt32 i = len - 1; i >= 0; i--) {
if (aLibraryName[i] == '\\') {
baseName = &aLibraryName[i + 1];
break;
}
}
DWORD baseAddr = _SymLoadModule(myProcess,
NULL,
(char*)baseName,
(char*)baseName,
0,
0);
ok = (baseAddr != nsnull);
}
if (!ok) {
LPVOID lpMsgBuf;
FormatMessage(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
(LPTSTR) &lpMsgBuf,
0,
NULL
);
fprintf(stdout, "### ERROR: LoadLibrarySymbols for %s: %s\n",
aLibraryName, lpMsgBuf);
fflush(stdout);
LocalFree( lpMsgBuf );
}
}
#endif
#endif
}
//----------------------------------------------------------------------
EXPORT_XPCOM_API(void)
NS_LogInit()
{

4
xpcom/base/nsTraceRefcntImpl.h
Просмотреть файл

@ -60,10 +60,6 @@ public:
static NS_COM void ResetStatistics(void);
static NS_COM void LoadLibrarySymbols(const char* aLibraryName,
void* aLibrayHandle);
static NS_COM void DemangleSymbol(const char * aSymbol,
char * aBuffer,
int aBufLen);

6
xpcom/components/nsNativeComponentLoader.cpp
Просмотреть файл

@ -158,12 +158,6 @@ nsNativeModuleLoader::LoadModule(nsILocalFile* aFile, nsIModule* *aResult)
return rv;
}
#ifdef NS_BUILD_REFCNT_LOGGING
// Inform refcnt tracer of new library so that calls through the
// new library can be traced.
nsTraceRefcntImpl::LoadLibrarySymbols(filePath.get(), data.library);
#endif
#ifdef IMPLEMENT_BREAK_AFTER_LOAD
nsCAutoString leafName;
aFile->GetNativeLeafName(leafName);