Export a stack walking API (usable from C or C++) from XPCOM. b=374689 r=bsmedberg a=bzbarsky

This commit is contained in:
dbaron@dbaron.org 2007-08-10 14:28:22 -07:00
Родитель 5307ebca39
Коммит 103f60636e
9 изменённых файлов: 253 добавлений и 144 удалений

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@ -164,15 +164,6 @@ CMMSRCS = MacApplicationDelegate.mm
endif
ifneq (,$(filter-out OS2 WINNT,$(OS_ARCH)))
STACKWALK_SRC_LCSRCS = \
nsStackFrameUnix.cpp \
nsStackFrameUnix.h \
$(NULL)
STACKWALK_CPPSRCS := $(addprefix $(topsrcdir)/xpcom/base/, $(STACKWALK_SRC_LCSRCS))
ifndef MOZ_ENABLE_LIBXUL
CPPSRCS += nsStackFrameUnix.cpp
endif
SHAREDCPPSRCS += nsSigHandlers.cpp
endif
@ -181,10 +172,6 @@ ifeq ($(OS_ARCH),WINNT)
GARBAGE += $(addprefix $(srcdir)/,$(SHAREDCPPSRCS))
endif
ifneq (,$(filter-out OS2 WINNT,$(OS_ARCH)))
GARBAGE += $(STACKWALK_SRC_LCSRCS)
endif
SHARED_LIBRARY_LIBS += ../profile/src/$(LIB_PREFIX)profile_s.$(LIB_SUFFIX)
ifdef MOZ_ENABLE_XREMOTE
@ -254,7 +241,7 @@ ifdef WRAP_SYSTEM_INCLUDES
DEFINES += -DWRAP_SYSTEM_INCLUDES
endif
export:: $(addprefix $(topsrcdir)/xpfe/bootstrap/, $(SHAREDCPPSRCS)) $(STACKWALK_CPPSRCS)
export:: $(addprefix $(topsrcdir)/xpfe/bootstrap/, $(SHAREDCPPSRCS))
$(INSTALL) $^ .
platform.ini: FORCE

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@ -65,6 +65,7 @@ CPPSRCS = \
nsUUIDGenerator.cpp \
nsSystemInfo.cpp \
nsCycleCollector.cpp \
nsStackWalk.cpp \
$(NULL)
ifdef GC_LEAK_DETECTOR
@ -85,6 +86,7 @@ EXPORTS = \
nsIAllocator.h \
nsIID.h \
nsISupportsObsolete.h \
nsStackWalk.h \
nsTraceRefcntImpl.h \
nsWeakPtr.h \
nsInterfaceRequestorAgg.h \
@ -95,11 +97,6 @@ ifdef MOZ_DEBUG
CSRCS += pure_api.c
EXPORTS += pure.h
endif
CPPSRCS += nsStackFrameWin.cpp
endif
ifneq ($(OS_ARCH),WINNT)
CPPSRCS += nsStackFrameUnix.cpp
endif
SDK_XPIDLSRCS = \

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@ -37,11 +37,11 @@
*
* ***** END LICENSE BLOCK ***** */
#include "nsStackFrameUnix.h"
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "nscore.h"
#include <stdio.h>
// On glibc 2.1, the Dl_info api defined in <dlfcn.h> is only exposed
// if __USE_GNU is defined. I suppose its some kind of standards
@ -86,9 +86,12 @@ void DemangleSymbol(const char * aSymbol,
#if defined(linux) && defined(__GNUC__) && (defined(__i386) || defined(PPC) || defined(__x86_64__)) // i386 or PPC Linux stackwalking code
void DumpStackToFile(FILE* aStream)
EXPORT_XPCOM_API(nsresult)
NS_StackWalk(NS_WalkStackCallback aCallback, PRUint32 aSkipFrames,
void *aClosure)
{
// Stack walking code courtesy Kipp's "leaky".
char buf[512];
// Get the frame pointer
void **bp;
@ -103,14 +106,15 @@ void DumpStackToFile(FILE* aStream)
bp = (void**) __builtin_frame_address(0);
#endif
int skip = 2;
int skip = aSkipFrames;
for ( ; (void**)*bp > bp; bp = (void**)*bp) {
void *pc = *(bp+1);
if (--skip <= 0) {
if (--skip < 0) {
Dl_info info;
int ok = dladdr(pc, &info);
if (!ok) {
fprintf(aStream, "UNKNOWN %p\n", pc);
snprintf(buf, sizeof(buf), "UNKNOWN %p\n", pc);
(*aCallback)(buf, aClosure);
continue;
}
@ -119,8 +123,9 @@ void DumpStackToFile(FILE* aStream)
const char * symbol = info.dli_sname;
int len;
if (!symbol || !(len = strlen(symbol))) {
fprintf(aStream, "UNKNOWN [%s +0x%08X]\n",
info.dli_fname, foff);
snprintf(buf, sizeof(buf), "UNKNOWN [%s +0x%08X]\n",
info.dli_fname, foff);
(*aCallback)(buf, aClosure);
continue;
}
@ -134,10 +139,12 @@ void DumpStackToFile(FILE* aStream)
}
PRUint32 off = (char*)pc - (char*)info.dli_saddr;
fprintf(aStream, "%s+0x%08X [%s +0x%08X]\n",
symbol, off, info.dli_fname, foff);
snprintf(buf, sizeof(buf), "%s+0x%08X [%s +0x%08X]\n",
symbol, off, info.dli_fname, foff);
(*aCallback)(buf, aClosure);
}
}
return NS_OK;
}
#elif defined(__sun) && (defined(__sparc) || defined(sparc) || defined(__i386) || defined(i386))
@ -152,16 +159,15 @@ void DumpStackToFile(FILE* aStream)
#include <sys/regset.h>
#include <sys/stack.h>
static int load_address ( void * pc, void * arg, FILE * aStream );
static int write_address_file ( void * pc );
static int load_address ( void * pc, void * arg );
static struct bucket * newbucket ( void * pc );
static struct frame * cs_getmyframeptr ( void );
static void cs_walk_stack ( void * (*read_func)(char * address),
struct frame * fp,
int (*operate_func)(void *, void *),
void * usrarg, FILE * aStream );
void * usrarg );
static void cs_operate ( void (*operate_func)(void *, void *),
void * usrarg, FILE * aStream );
void * usrarg );
#ifndef STACK_BIAS
#define STACK_BIAS 0
@ -190,9 +196,10 @@ struct bucket {
struct bucket * next;
};
struct mybuf {
char * buffer;
int chars_left;
struct my_user_args {
NS_WalkStackCallback callback;
PRUint32 skipFrames;
void *closure;
};
@ -225,11 +232,12 @@ myinit()
static int
write_address_file(void * pc, FILE* aStream)
load_address(void * pc, void * arg )
{
static struct bucket table[2048];
static mutex_t lock;
struct bucket * ptr;
struct my_user_args * args = (struct my_user_args *) arg;
unsigned int val = NS_PTR_TO_INT32(pc);
@ -244,7 +252,6 @@ write_address_file(void * pc, FILE* aStream)
if (ptr->next) {
mutex_unlock(&lock);
return (ptr->next->index);
} else {
char buffer[4096], dembuff[4096];
Dl_info info;
@ -269,37 +276,12 @@ write_address_file(void * pc, FILE* aStream)
if (strlen(dembuff)) {
func = dembuff;
}
fprintf(aStream, "%u %s:%s+0x%x\n",
ptr->next->index,
lib,
func,
(char *)pc - (char*)info.dli_saddr);
return (ptr->next->index);
snprintf(buffer, sizeof(buffer), "%u %s:%s+0x%x\n",
ptr->next->index, lib, func,
(char *)pc - (char*)info.dli_saddr);
(*args.callback)(buffer, args.closure);
}
}
static int
load_address(void * pc, void * arg, FILE * aStream)
{
struct mybuf * buf = (struct mybuf *) arg;
char name[80];
int len;
sprintf(name, " %u", write_address_file(pc, aStream));
len = strlen(name);
if (len >= buf->chars_left)
return (1);
strcat(buf->buffer, name);
buf->chars_left -= len;
return (0);
return 0;
}
@ -336,12 +318,12 @@ csgetframeptr()
static void
cswalkstack(struct frame *fp, int (*operate_func)(void *, void *, FILE *),
void *usrarg, FILE * aStream)
void *usrarg)
{
while (fp != 0 && fp->fr_savpc != 0) {
if (operate_func((void *)fp->fr_savpc, usrarg, aStream) != 0)
if (operate_func((void *)fp->fr_savpc, usrarg) != 0)
break;
/*
* watch out - libthread stacks look funny at the top
@ -355,21 +337,24 @@ cswalkstack(struct frame *fp, int (*operate_func)(void *, void *, FILE *),
static void
cs_operate(int (*operate_func)(void *, void *, FILE *), void * usrarg, FILE *aStream)
cs_operate(int (*operate_func)(void *, void *, FILE *), void * usrarg)
{
cswalkstack(csgetframeptr(), operate_func, usrarg, aStream);
cswalkstack(csgetframeptr(), operate_func, usrarg);
}
void DumpStackToFile(FILE* aStream)
EXPORT_XPCOM_API(nsresult)
NS_StackWalk(NS_WalkStackCallback aCallback, PRUint32 aSkipFrames,
void *aClosure)
{
char buffer[LOGSIZE];
struct mybuf mybuf;
struct my_user_args args;
if (!initialized)
myinit();
mybuf.chars_left = LOGSIZE - strlen(buffer)-1;
mybuf.buffer = buffer;
cs_operate(load_address, &mybuf, aStream);
args.callback = aCallback;
args.skipFrames = aSkipFrames; /* XXX Not handled! */
args.closure = aClosure;
cs_operate(load_address, &args);
return NS_OK;
}
#endif

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@ -39,8 +39,8 @@
* ***** END LICENSE BLOCK ***** */
#include "nscore.h"
#include "windows.h"
#include "stdio.h"
#include <windows.h>
#include <stdio.h>
#include "nsStackFrameWin.h"
// Define these as static pointers so that we can load the DLL on the
@ -122,8 +122,8 @@ HANDLE hStackWalkMutex;
PR_END_EXTERN_C
// Routine to print an error message to standard error.
// Will also print to an additional stream if one is supplied.
void PrintError(char *prefix, FILE *out)
// Will also call callback with error, if data supplied.
void PrintError(char *prefix, WalkStackData *data)
{
LPVOID lpMsgBuf;
DWORD lastErr = GetLastError();
@ -136,9 +136,11 @@ void PrintError(char *prefix, FILE *out)
0,
NULL
);
fprintf(stderr, "### ERROR: %s: %s", prefix, lpMsgBuf);
if (out)
fprintf(out, "### ERROR: %s: %s\n", prefix, lpMsgBuf);
char buf[512];
_snprintf(buf, sizeof(buf), "### ERROR: %s: %s", prefix, lpMsgBuf);
fputs(buf, stderr);
if (data)
(*data->callback)(buf, data->closure);
LocalFree( lpMsgBuf );
}
@ -443,16 +445,17 @@ EnsureSymInitialized()
* whose in memory address doesn't match its in-file address.
*/
void
DumpStackToFile(FILE* aStream)
EXPORT_XPCOM_API(nsresult)
NS_StackWalk(NS_WalkStackCallback aCallback, PRUint32 aSkipFrames,
void *aClosure)
{
HANDLE myProcess = ::GetCurrentProcess();
HANDLE myThread, walkerThread;
DWORD walkerReturn;
struct DumpStackToFileData data;
struct WalkStackData data;
if (!EnsureSymInitialized())
return;
return NS_ERROR_FAILURE;
// Have to duplicate handle to get a real handle.
::DuplicateHandle(
@ -463,43 +466,45 @@ DumpStackToFile(FILE* aStream)
THREAD_ALL_ACCESS, FALSE, 0
);
data.stream = aStream;
data.callback = aCallback;
data.skipFrames = aSkipFrames;
data.closure = aClosure;
data.thread = myThread;
data.process = myProcess;
walkerThread = ::CreateThread( NULL, 0, DumpStackToFileThread, (LPVOID) &data, 0, NULL ) ;
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", aStream);
PrintError("ThreadWait", &data);
}
CloseHandle(myThread);
}
else {
PrintError("ThreadCreate", aStream);
PrintError("ThreadCreate", &data);
}
return;
return NS_OK;
}
DWORD WINAPI
DumpStackToFileThread(LPVOID lpdata)
WalkStackThread(LPVOID lpdata)
{
struct DumpStackToFileData *data = (DumpStackToFileData *)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", data->stream);
PrintError("ThreadSuspend", data);
}
else {
if (_StackWalk64)
DumpStackToFileMain64(data);
WalkStackMain64(data);
else
DumpStackToFileMain(data);
WalkStackMain(data);
ret = ::ResumeThread(data->thread);
if (ret == -1) {
PrintError("ThreadResume", data->stream);
PrintError("ThreadResume", data);
}
}
@ -507,7 +512,7 @@ DumpStackToFileThread(LPVOID lpdata)
}
void
DumpStackToFileMain64(struct DumpStackToFileData* data)
WalkStackMain64(struct WalkStackData* data)
{
#ifdef USING_WXP_VERSION
// Get the context information for the thread. That way we will
@ -516,17 +521,17 @@ DumpStackToFileMain64(struct DumpStackToFileData* data)
CONTEXT context;
HANDLE myProcess = data->process;
HANDLE myThread = data->thread;
FILE* aStream = data->stream;
char buf[512];
DWORD64 addr;
STACKFRAME64 frame64;
int skip = 6; // skip our own stack walking frames
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", aStream);
PrintError("GetThreadContext", data);
return;
}
@ -545,7 +550,7 @@ DumpStackToFileMain64(struct DumpStackToFileData* data)
frame64.AddrStack.Offset = context.SP;
frame64.AddrFrame.Offset = context.RsBSP;
#else
fprintf(aStream, "Unknown platform. No stack walking.");
PrintError("Unknown platform. No stack walking.", data);
return;
#endif
frame64.AddrPC.Mode = AddrModeFlat;
@ -586,7 +591,7 @@ DumpStackToFileMain64(struct DumpStackToFileData* data)
if (ok)
addr = frame64.AddrPC.Offset;
else
PrintError("WalkStack64", aStream);
PrintError("WalkStack64", data);
if (!ok || (addr == 0)) {
ReleaseMutex(hStackWalkMutex); // release our lock
@ -621,16 +626,17 @@ DumpStackToFileMain64(struct DumpStackToFileData* data)
ReleaseMutex(hStackWalkMutex);
if (ok)
fprintf(aStream, "%s!%s+0x%016X\n", modInfo.ModuleName, pSymbol->Name, displacement);
_snprintf(buf, sizeof(buf), "%s!%s+0x%016X\n", modInfo.ModuleName, pSymbol->Name, displacement);
else
fprintf(aStream, "0x%016X\n", addr);
_snprintf(buf, sizeof(buf), "0x%016X\n", addr);
(*data->callback)(buf, data->closure);
// Stop walking when we get to kernel32.
if (strcmp(modInfo.ModuleName, "kernel32") == 0)
break;
}
else {
PrintError("LockError64", aStream);
PrintError("LockError64", data);
}
}
return;
@ -639,7 +645,7 @@ DumpStackToFileMain64(struct DumpStackToFileData* data)
void
DumpStackToFileMain(struct DumpStackToFileData* data)
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
@ -647,17 +653,17 @@ DumpStackToFileMain(struct DumpStackToFileData* data)
CONTEXT context;
HANDLE myProcess = data->process;
HANDLE myThread = data->thread;
FILE* aStream = data->stream;
char buf[512];
DWORD addr;
STACKFRAME frame;
int skip = 2; // skip our own stack walking frames
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", aStream);
PrintError("GetThreadContext", data);
return;
}
@ -671,7 +677,7 @@ DumpStackToFileMain(struct DumpStackToFileData* data)
frame.AddrFrame.Offset = context.Ebp;
frame.AddrFrame.Mode = AddrModeFlat;
#else
fprintf(aStream, "Unknown platform. No stack walking.");
PrintError("Unknown platform. No stack walking.", data);
return;
#endif
@ -700,7 +706,7 @@ DumpStackToFileMain(struct DumpStackToFileData* data)
if (ok)
addr = frame.AddrPC.Offset;
else
PrintError("WalkStack", aStream);
PrintError("WalkStack", data);
if (!ok || (addr == 0)) {
ReleaseMutex(hStackWalkMutex); // release our lock
@ -750,9 +756,10 @@ DumpStackToFileMain(struct DumpStackToFileData* data)
ReleaseMutex(hStackWalkMutex);
if (ok)
fprintf(aStream, "%s!%s+0x%08X\n", modInfo.ImageName, pSymbol->Name, displacement);
_snprintf(buf, sizeof(buf), "%s!%s+0x%08X\n", modInfo.ImageName, pSymbol->Name, displacement);
else
fprintf(aStream, "0x%08X\n", (DWORD) addr);
_snprintf(buf, sizeof(buf), "0x%08X\n", (DWORD) addr);
(*data->callback)(buf, data->closure);
// Stop walking when we get to kernel32.dll.
if (strcmp(modInfo.ImageName, "kernel32.dll") == 0)
@ -760,7 +767,7 @@ DumpStackToFileMain(struct DumpStackToFileData* data)
}
else {
PrintError("LockError", aStream);
PrintError("LockError", data);
}
}

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@ -175,17 +175,18 @@ PRBool EnsureImageHlpInitialized();
*/
BOOL SymGetModuleInfoEspecial(HANDLE aProcess, DWORD aAddr, PIMAGEHLP_MODULE aModuleInfo, PIMAGEHLP_LINE aLineInfo);
struct DumpStackToFileData {
FILE *stream;
struct WalkStackData {
NS_WalkStackCallback callback;
PRUint32 skipFrames;
void *closure;
HANDLE thread;
HANDLE process;
};
void PrintError(char *prefix, FILE* out);
void DumpStackToFile(FILE* out);
DWORD WINAPI DumpStackToFileThread(LPVOID data);
void DumpStackToFileMain64(struct DumpStackToFileData* data);
void DumpStackToFileMain(struct DumpStackToFileData* data);
void PrintError(char *prefix, WalkStackData* data);
DWORD WINAPI WalkStackThread(LPVOID data);
void WalkStackMain64(struct WalkStackData* data);
void WalkStackMain(struct WalkStackData* data);
PR_END_EXTERN_C

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@ -0,0 +1,59 @@
/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
/* ***** 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 NS_WalkTheStack.
*
* The Initial Developer of the Original Code is the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* L. David Baron <dbaron@dbaron.org>, Mozilla Corporation (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either 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 ***** */
/* API for getting a stack trace of the C/C++ stack on the current thread */
#include "nsStackWalk.h"
#if defined(_WIN32) && defined(_M_IX86) && !defined(WINCE) // WIN32 x86 stack walking code
#include "nsStackFrameWin.cpp"
// WIN32 x86 stack walking code
// i386 or PPC Linux stackwalking code or Solaris
#elif (defined(linux) && defined(__GNUC__) && (defined(__i386) || defined(PPC) || defined(__x86_64__))) || (defined(__sun) && (defined(__sparc) || defined(sparc) || defined(__i386) || defined(i386)))
#include "nsStackFrameUnix.cpp"
#else // unsupported platform.
EXPORT_XPCOM_API(nsresult)
NS_StackWalk(NS_WalkStackCallback aCallback, PRUint32 aSkipFrames,
void *aClosure)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
#endif

74
xpcom/base/nsStackWalk.h Normal file
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@ -0,0 +1,74 @@
/* vim: set shiftwidth=4 tabstop=8 autoindent cindent expandtab: */
/* ***** 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 NS_WalkTheStack.
*
* The Initial Developer of the Original Code is the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* L. David Baron <dbaron@dbaron.org>, Mozilla Corporation (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either 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 ***** */
/* API for getting a stack trace of the C/C++ stack on the current thread */
#ifndef nsStackWalk_h_
#define nsStackWalk_h_
/* WARNING: This file is intended to be included from C or C++ files. */
#include "nscore.h"
PR_BEGIN_EXTERN_C
typedef void
(* PR_CALLBACK NS_WalkStackCallback)(char *aFrame, void *aClosure);
/**
* Call aCallback for the C/C++ stack frames on the current thread, from
* the caller of NS_StackWalk to main (or above).
*
* @param aCallback Callback function, called once per frame.
* @param aSkipFrames Number of initial frames to skip. 0 means that
* the first callback will be for the caller of
* NS_StackWalk.
* @param aClosure Caller-supplied data passed through to aCallback.
*
* Returns NS_ERROR_NOT_IMPLEMENTED on platforms where it is
* unimplemented.
*
* May skip some stack frames due to compiler optimizations or code
* generation.
*/
XPCOM_API(nsresult)
NS_StackWalk(NS_WalkStackCallback aCallback, PRUint32 aSkipFrames,
void *aClosure);
PR_END_EXTERN_C
#endif /* !defined(nsStackWalk_h_) */

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@ -48,9 +48,11 @@
#include "nsCOMPtr.h"
#include "nsCRT.h"
#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
@ -825,34 +827,22 @@ static void InitTraceLog(void)
#endif
#if defined(_WIN32) && defined(_M_IX86) && !defined(WINCE) // WIN32 x86 stack walking code
#include "nsStackFrameWin.h"
NS_COM void
nsTraceRefcntImpl::WalkTheStack(FILE* aStream)
extern "C" {
PR_STATIC_CALLBACK(void) PrintStackFrame(char *aFrame, void *aClosure)
{
DumpStackToFile(aStream);
FILE *stream = (FILE*)aClosure;
fprintf(stream, aFrame);
}
// WIN32 x86 stack walking code
// i386 or PPC Linux stackwalking code or Solaris
#elif (defined(linux) && defined(__GNUC__) && (defined(__i386) || defined(PPC) || defined(__x86_64__))) || (defined(__sun) && (defined(__sparc) || defined(sparc) || defined(__i386) || defined(i386)))
#include "nsStackFrameUnix.h"
NS_COM void
nsTraceRefcntImpl::WalkTheStack(FILE* aStream)
{
DumpStackToFile(aStream);
}
#else // unsupported platform.
NS_COM void
nsTraceRefcntImpl::WalkTheStack(FILE* aStream)
{
fprintf(aStream, "write me, dammit!\n");
NS_StackWalk(PrintStackFrame, 2, aStream);
}
#endif
//----------------------------------------------------------------------
// This thing is exported by libstdc++

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@ -114,7 +114,16 @@ void abnormal_exit_handler(int signum)
#include <unistd.h>
#include "nsISupportsUtils.h"
#include "nsStackFrameUnix.h"
#include "nsStackWalk.h"
extern "C" {
PR_STATIC_CALLBACK(void) PrintStackFrame(char *aFrame, void *aClosure)
{
fprintf(stdout, aFrame);
}
}
void
ah_crap_handler(int signum)
@ -125,7 +134,7 @@ ah_crap_handler(int signum)
signum);
printf("Stack:\n");
DumpStackToFile(stdout);
NS_StackWalk(PrintStackFrame, 2, nsnull);
printf("Sleeping for %d seconds.\n",_gdb_sleep_duration);
printf("Type 'gdb %s %d' to attach your debugger to this thread.\n",