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azerothcore-wotlk-pbot/modules/dep/acelite/ace/Stack_Trace.cpp

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//=============================================================================
/**
* @file Stack_Trace.cpp
*
* @brief Encapsulate string representation of stack trace.
*
* Some platform-specific areas of this code have been adapted from
* examples found elsewhere. Specifically,
* - the GLIBC stack generation uses the documented "backtrace" API
* and is adapted from examples shown in relevant documentation
* and repeated elsewhere, e.g.,
* http://www.linuxselfhelp.com/gnu/glibc/html_chapter/libc_33.html
* - the Solaris stack generation is adapted from a 1995 post on
* comp.unix.solaris by Bart Smaalders,
* http://groups.google.com/group/comp.unix.solaris/browse_thread/thread/8b9f3de8be288f1c/31550f93a48231d5?lnk=gst&q=how+to+get+stack+trace+on+solaris+group:comp.unix.solaris#31550f93a48231d5
* - VxWorks kernel-mode stack tracing is adapted from a code example
* in the VxWorks FAQ at http://www.xs4all.nl/~borkhuis/vxworks/vxw_pt5.html
* although the undocumented functions it uses are also mentioned in
* various documents available on the WindRiver support website.
*
* If you add support for a new platform, please add a bullet to the
* above list with durable references to the origins of your code.
*/
//=============================================================================
#include "ace/Stack_Trace.h"
#include "ace/Min_Max.h"
#include "ace/OS_NS_string.h"
#include "ace/OS_NS_stdio.h"
/*
This is ugly, simply because it's very platform-specific.
*/
const char ACE_Stack_Trace::UNSUPPORTED[] = "<stack traces unsupported platform>";
const char ACE_Stack_Trace::UNABLE_TO_GET_TRACE[] = "<unable to get trace>";
ACE_Stack_Trace::ACE_Stack_Trace (ssize_t starting_frame_offset, size_t num_frames)
: buflen_(0)
{
// cannot initialize arrays, so we must assign.
this->buf_[0] = '\0';
this->generate_trace (starting_frame_offset, num_frames);
}
const char*
ACE_Stack_Trace::c_str () const
{
return &this->buf_[0];
}
static inline size_t
determine_starting_frame (ssize_t initial_frame, ssize_t offset)
{
return ACE_MAX( initial_frame + offset, static_cast<ssize_t>(0));
}
#if (defined(__GLIBC__) || defined(ACE_HAS_EXECINFO_H)) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3))
// This is the code for glibc
# include <execinfo.h>
void
ACE_Stack_Trace::generate_trace (ssize_t starting_frame_offset, size_t num_frames)
{
const size_t MAX_FRAMES = 128;
const ssize_t INITIAL_FRAME = 3;
void* stack[MAX_FRAMES];
size_t stack_size = 0;
char** stack_syms;
if (num_frames == 0)
num_frames = MAX_FRAMES;
size_t starting_frame =
determine_starting_frame (INITIAL_FRAME, starting_frame_offset);
stack_size = ::backtrace (&stack[0], sizeof(stack)/sizeof(stack[0]));
if (stack_size != 0)
{
stack_syms = ::backtrace_symbols (stack, stack_size);
for (size_t i = starting_frame;
i < stack_size && num_frames > 0;
i++, num_frames--)
{
// this could be more efficient by remembering where we left off in buf_
char *symp = &stack_syms[i][0];
while (this->buflen_ < SYMBUFSIZ - 2 && *symp != '\0')
{
this->buf_[this->buflen_++] = *symp++;
}
this->buf_[this->buflen_++] = '\n'; // put a newline at the end
}
this->buf_[this->buflen_] = '\0'; // zero terminate the string
::free (stack_syms);
}
else
{
ACE_OS::strcpy (&this->buf_[0], UNABLE_TO_GET_TRACE);
}
}
#elif defined(VXWORKS) && !defined(__RTP__)
# include <trcLib.h>
# include <taskLib.h> // hopefully this is enough to get all the necessary #defines.
struct ACE_Stack_Trace_stackstate
{
ACE_Stack_Trace_stackstate (char* b, size_t& bl, size_t nf, size_t sf)
: buf(b), buflen(bl), num_frames(nf), starting_frame(sf)
{ }
char* buf;
size_t& buflen;
size_t num_frames;
size_t starting_frame;
};
//@TODO: Replace with a TSS-based pointer to avoid problems in multithreaded environs,
// or use a mutex to serialize access to this.
static ACE_Stack_Trace_stackstate* ACE_Stack_Trace_stateptr = 0;
static void
ACE_Stack_Trace_Add_Frame_To_Buf (INSTR *caller,
INSTR *func,
int nargs,
ACE_VX_USR_ARG_T *args)
{
if (ACE_Stack_Trace_stateptr == 0)
return;
ACE_Stack_Trace_stackstate *stackstate = ACE_Stack_Trace_stateptr;
// Decrement the num_frames and starting_frame elements,
// then see if we're ready to start or ready to finish.
--stackstate->num_frames;
--stackstate->starting_frame;
if (stackstate->num_frames == 0 || stackstate->starting_frame > 0)
return;
// These are references so that the structure gets updated
// in the code below.
char*& buf = stackstate->buf;
size_t& len = stackstate->buflen;
// At some point try using symFindByValue() to lookup func (and caller?)
// to print out symbols rather than simply addresses.
// VxWorks can pass -1 for "nargs" if there was an error
if (nargs == -1)
nargs = 0;
len += ACE_OS::sprintf (&buf[len], "%p: %p (", caller, func);
for (int i = 0; i < nargs; ++i)
{
if (i != 0)
len += ACE_OS::sprintf (&buf[len], ", ");
len += ACE_OS::sprintf(&buf[len], "0x" ACE_VX_ARG_FORMAT, args[i]);
}
len += ACE_OS::sprintf(&buf[len], ")\n");
}
void
ACE_Stack_Trace::generate_trace (ssize_t starting_frame_offset,
size_t num_frames)
{
const size_t MAX_FRAMES = 128;
const ssize_t INITIAL_FRAME = 3;
if (num_frames == 0)
num_frames = MAX_FRAMES;
size_t starting_frame =
determine_starting_frame (INITIAL_FRAME, starting_frame_offset);
ACE_Stack_Trace_stackstate state (&this->buf_[0], this->buflen_,
num_frames, starting_frame);
REG_SET regs;
taskRegsGet (taskIdSelf(), &regs);
// Maybe we should take a lock here to guard stateptr?
ACE_Stack_Trace_stateptr = &state;
trcStack (&regs, (FUNCPTR)ACE_Stack_Trace_Add_Frame_To_Buf, taskIdSelf ());
}
#elif defined(VXWORKS) && defined(__RTP__)
# include <setjmp.h>
# include <taskLib.h>
# include <private/trcLibP.h>
// See memEdrLib.c in VxWorks RTP sources for an example of stack tracing.
static STATUS ace_vx_rtp_pc_validate (INSTR *pc, TRC_OS_CTX *)
{
return ALIGNED (pc, sizeof (INSTR)) ? OK : ERROR;
}
void
ACE_Stack_Trace::generate_trace (ssize_t starting_frame_offset,
size_t num_frames)
{
const size_t MAX_FRAMES = 128;
const ssize_t INITIAL_FRAME = 2;
if (num_frames == 0) num_frames = MAX_FRAMES;
size_t starting_frame =
determine_starting_frame (INITIAL_FRAME, starting_frame_offset);
jmp_buf regs;
setjmp (regs);
TASK_DESC desc;
if (taskInfoGet (taskIdSelf (), &desc) == ERROR) return;
TRC_OS_CTX osCtx;
osCtx.stackBase = desc.td_pStackBase;
osCtx.stackEnd = desc.td_pStackEnd;
#if (ACE_VXWORKS < 0x690)
osCtx.pcValidateRtn = reinterpret_cast<FUNCPTR> (ace_vx_rtp_pc_validate);
#else
// reinterpret_cast causes an error
osCtx.pcValidateRtn = ace_vx_rtp_pc_validate;
#endif
char *fp = _WRS_FRAMEP_FROM_JMP_BUF (regs);
INSTR *pc = _WRS_RET_PC_FROM_JMP_BUF (regs);
for (size_t depth = 0; depth < num_frames + starting_frame; ++depth)
{
char *prevFp;
INSTR *prevPc;
INSTR *prevFn;
if (trcLibFuncs.lvlInfoGet (fp, pc, &osCtx, &prevFp, &prevPc, &prevFn)
== ERROR)
{
ACE_OS::strcpy (this->buf_, UNABLE_TO_GET_TRACE);
return;
}
if(prevPc == 0 || prevFp == 0) break;
if (depth >= starting_frame)
{
//Hopefully a future version of VxWorks will have a system call
//for an RTP to query its own symbols, but this is not possible now.
//An enhancement request has been filed under WIND00123307.
const char *fnName = "(no symbols)";
static const int N_ARGS = 12;
ACE_VX_USR_ARG_T buf[N_ARGS];
ACE_VX_USR_ARG_T *pArgs = 0;
int numArgs =
trcLibFuncs.lvlArgsGet (prevPc, prevFn, prevFp,
buf, N_ARGS, &pArgs);
// VxWorks can return -1 for "numArgs" if there was an error
if (numArgs == -1) numArgs = 0;
size_t len = ACE_OS::strlen (this->buf_);
size_t space = SYMBUFSIZ - len - 1;
char *cursor = this->buf_ + len;
size_t written = ACE_OS::snprintf (cursor, space, "%p %s",
prevFn, fnName);
cursor += written;
space -= written;
if (space < 1) return; //no point in logging when we're out of buffer
for (int arg = 0; numArgs != -1 && pArgs && arg < numArgs; ++arg)
{
if (arg == 0) *cursor++ = '(', --space;
written = ACE_OS::snprintf (cursor, space,
(arg < numArgs - 1) ?
ACE_VX_ARG_FORMAT ", " :
ACE_VX_ARG_FORMAT,
pArgs[arg]);
cursor += written;
space -= written;
if (space && arg == numArgs - 1) *cursor++ = ')', --space;
}
if (space) *cursor++ = '\n', --space;
*cursor++ = 0; //we saved space for the null terminator
}
fp = prevFp;
pc = prevPc;
}
}
#elif defined(sun)
/*
* walks up call stack, printing library:routine+offset for each routine
*/
# include <dlfcn.h>
# include <setjmp.h>
# include <sys/types.h>
# include <sys/reg.h>
# include <sys/frame.h>
# define ACE_STACK_TRACE_BIAS 0
# if defined(sparc) || defined(__sparc)
# define ACE_STACK_TRACE_FLUSHWIN() asm("ta 3");
# define ACE_STACK_TRACE_FRAME_PTR_INDEX 1
# define ACE_STACK_TRACE_SKIP_FRAMES 0
# if defined(__sparcv9)
# undef ACE_STACK_TRACE_BIAS
# define ACE_STACK_TRACE_BIAS 2047
# endif
# endif
# if defined(i386) || defined(__i386)
# define ACE_STACK_TRACE_FLUSHWIN()
# define ACE_STACK_TRACE_FRAME_PTR_INDEX 3
# define ACE_STACK_TRACE_SKIP_FRAMES 0
# endif
# if defined(__amd64) || defined(__x86_64)
# define ACE_STACK_TRACE_FLUSHWIN()
# define ACE_STACK_TRACE_FRAME_PTR_INDEX 5
# define ACE_STACK_TRACE_SKIP_FRAMES 0
# endif
# if defined(ppc) || defined(__ppc)
# define ACE_STACK_TRACE_FLUSHWIN()
# define ACE_STACK_TRACE_FRAME_PTR_INDEX 0
# define ACE_STACK_TRACE_SKIP_FRAMES 2
# endif
static frame*
cs_frame_adjust(frame* sp)
{
unsigned char* sp_byte = (unsigned char*)sp;
sp_byte += ACE_STACK_TRACE_BIAS;
return (frame*) sp_byte;
}
/*
this function walks up call stack, calling user-supplied
function once for each stack frame, passing the pc and the user-supplied
usrarg as the argument.
*/
static int
cs_operate(int (*func)(void *, void *), void * usrarg,
size_t starting_frame, size_t num_frames_arg)
{
ACE_STACK_TRACE_FLUSHWIN();
jmp_buf env;
setjmp(env);
frame* sp = cs_frame_adjust((frame*) env[ACE_STACK_TRACE_FRAME_PTR_INDEX]);
// make a copy of num_frames_arg to eliminate the following warning on some
// solaris platforms:
// Stack_Trace.cpp:318: warning: argument `size_t num_frames' might be clobbered by `longjmp' or `vfork'
size_t num_frames = num_frames_arg;
// I would like to use ACE_MAX below rather than ?:, but
// I get linker relocation errors such as the following when
// I use it:
// ld: fatal: relocation error: file: .shobj/Stack_Trace.o section:
// .rela.debug_line symbol: : relocation against a discarded symbol,
// symbol is part of discarded section:
// .text%const __type_0&ace_max<unsig\ned>(const __type_0&,const __type_0&)
//
const size_t starting_skip = starting_frame - 1;
#if ACE_STACK_TRACE_SKIP_FRAMES == 0
size_t skip_frames = starting_skip;
#else
size_t skip_frames =
ACE_STACK_TRACE_SKIP_FRAMES > starting_skip ?
ACE_STACK_TRACE_SKIP_FRAMES : starting_skip;
#endif /* ACE_STACK_TRACE_SKIP_FRAMES == 0 */
size_t i;
for (i = 0; i < skip_frames && sp; ++i)
{
sp = cs_frame_adjust((frame*) sp->fr_savfp);
}
i = 0;
while ( sp
&& sp->fr_savpc
&& ++i
&& --num_frames
&& (*func)((void*)sp->fr_savpc, usrarg))
{
sp = cs_frame_adjust((frame*) sp->fr_savfp);
}
return(i);
}
static int
add_frame_to_buf (void* pc, void* usrarg)
{
char* buf = (char*)usrarg;
Dl_info info;
const char* func = "??";
const char* lib = "??";
if(dladdr(pc, & info) != 0)
{
lib = (const char *) info.dli_fname;
func = (const char *) info.dli_sname;
}
(void) ACE_OS::snprintf(buf,
ACE_Stack_Trace::SYMBUFSIZ,
"%s%s:%s+0x%x\n",
buf,
lib,
func,
//@@ Should the arithmetic on the following
//line be done with two void* ptrs? The result
//would be ptrdiff_t, and what is the correct
//sprintf() conversion character for that?
(size_t)pc - (size_t)info.dli_saddr);
return(1);
}
void
ACE_Stack_Trace::generate_trace (ssize_t starting_frame_offset,
size_t num_frames)
{
const size_t MAX_FRAMES = 128;
const ssize_t INITIAL_FRAME = 3;
if (num_frames == 0)
num_frames = MAX_FRAMES;
size_t starting_frame =
determine_starting_frame (INITIAL_FRAME, starting_frame_offset);
cs_operate (&add_frame_to_buf, &this->buf_[0], starting_frame, num_frames);
}
#elif defined(ACE_WIN64) && (_WIN32_WINNT <= _WIN32_WINNT_WIN2K)
# if defined(_MSC_VER)
# define STRING2(X) #X
# define STRING(X) STRING2(X)
# pragma message (__FILE__ "(" STRING(__LINE__) ") : warning: stack traces"\
" can't be generated on 64-bit Windows when _WIN32_WINNT is less than "\
"0x501.")
# undef STRING
# undef STRING2
# endif /*_MSC_VER*/
void
ACE_Stack_Trace::generate_trace (ssize_t, size_t)
{
ACE_OS::strcpy (&this->buf_[0], "<stack traces unsupported on Win64 unless "
"ACE is built with _WIN32_WINNT set to 0x501 or above>");
}
#elif defined(ACE_WIN32) && !defined(ACE_HAS_WINCE) && !defined (__MINGW32__) \
&& !defined(__BORLANDC__)
# include <windows.h>
# include <Dbghelp.h>
# define MAXTEXT 5000
# define SYMSIZE 100
//@TODO: Test with WCHAR
//@TODO: Need a common CriticalSection since dbghelp is not thread-safe
typedef struct _dbghelp_functions
{
HMODULE hMod; //our handle to dbghelp.dll
//these already have typedefs in DbgHelp.h
DWORD64 (WINAPI *SymGetModuleBase64) (HANDLE hProc, DWORD64 dwAddr);
PVOID (WINAPI *SymFunctionTableAccess64) (HANDLE hProc, DWORD64 AddrBase);
typedef BOOL (WINAPI *SymFromAddr_t)
(HANDLE hProc, DWORD64 Addr, PDWORD64 Disp, PSYMBOL_INFO Symbol);
SymFromAddr_t SymFromAddr;
typedef BOOL (WINAPI *SymGetLineFromAddr64_t) (HANDLE hProc, DWORD64 dwAddr,
PDWORD pdwDisplacement,
PIMAGEHLP_LINE64 Line);
SymGetLineFromAddr64_t SymGetLineFromAddr64;
typedef DWORD (WINAPI *SymSetOptions_t) (DWORD SymOptions);
SymSetOptions_t SymSetOptions;
typedef DWORD (WINAPI *SymGetOptions_t) ();
SymGetOptions_t SymGetOptions;
typedef BOOL (WINAPI *SymInitialize_t) (HANDLE hProc, PCTSTR UserSearchPath,
BOOL invasive);
SymInitialize_t SymInitialize;
typedef BOOL
(WINAPI *StackWalk64_t) (DWORD MachineType, HANDLE hPRoc, HANDLE hThr,
LPSTACKFRAME64 StackFrame, PVOID ContextRecord,
PREAD_PROCESS_MEMORY_ROUTINE64 RMRoutine,
PFUNCTION_TABLE_ACCESS_ROUTINE64 FTARoutine,
PGET_MODULE_BASE_ROUTINE64 GMBRoutine,
PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress);
StackWalk64_t StackWalk64;
typedef BOOL (WINAPI *SymCleanup_t) (HANDLE hProc);
SymCleanup_t SymCleanup;
} dbghelp_functions;
# pragma warning (push)
# pragma warning (disable:4706)
static bool load_dbghelp_library_if_needed (dbghelp_functions *pDbg)
{
//@TODO: See codeproject's StackWalker.cpp for the list of locations to
//search so we get the "enhanced" dbghelp if the user has it but it is not
//first on the path.
if (!(pDbg->hMod = ACE_TEXT_LoadLibrary (ACE_TEXT ("Dbghelp"))))
return false;
//@TODO: Cache this so we don't have to re-link every time. When to unload?
# define LINK(TYPE, NAME) (pDbg->NAME = \
(TYPE) GetProcAddress (pDbg->hMod, #NAME))
# define LINK_T(NAME) LINK (dbghelp_functions::NAME##_t, NAME)
return LINK (PGET_MODULE_BASE_ROUTINE64, SymGetModuleBase64)
&& LINK (PFUNCTION_TABLE_ACCESS_ROUTINE64, SymFunctionTableAccess64)
&& LINK_T (SymFromAddr) && LINK_T (SymGetLineFromAddr64)
&& LINK_T (SymSetOptions)&& LINK_T (SymGetOptions)
&& LINK_T (SymInitialize) && LINK_T (StackWalk64) && LINK_T (SymCleanup);
# undef LINK
# undef LINK_T
}
# pragma warning (pop)
struct frame_state {
STACKFRAME64 sf;
PSYMBOL_INFO pSym;
dbghelp_functions *pDbg;
};
static int
add_frame_to_buf (struct frame_state const *fs, void *usrarg)
{
if (fs == 0 || usrarg == 0)
return -1;
char *buf = static_cast<char *> (usrarg);
DWORD64 disp;
DWORD64 dwModBase = fs->pDbg->SymGetModuleBase64 (GetCurrentProcess (),
fs->sf.AddrPC.Offset);
if (fs->pDbg->SymFromAddr (GetCurrentProcess (),
fs->sf.AddrPC.Offset, &disp, fs->pSym))
{
IMAGEHLP_LINE64 line = {sizeof (IMAGEHLP_LINE64)};
DWORD lineDisp;
if (fs->pDbg->SymGetLineFromAddr64 (GetCurrentProcess (),
fs->sf.AddrPC.Offset,
&lineDisp, &line))
{
(void) ACE_OS::snprintf (buf, ACE_Stack_Trace::SYMBUFSIZ,
"%s%s() %s: %d + 0x%x\n",
buf, fs->pSym->Name, line.FileName,
line.LineNumber, lineDisp);
}
else
{
(void) ACE_OS::snprintf (buf, ACE_Stack_Trace::SYMBUFSIZ,
"%s%s()+0x%x [0x%x]\n",
buf, fs->pSym->Name, disp,
fs->sf.AddrPC.Offset - dwModBase);
}
}
else
{
(void) ACE_OS::snprintf (buf, ACE_Stack_Trace::SYMBUFSIZ,
"%s[0x%x]\n",
buf, fs->sf.AddrPC.Offset - dwModBase);
}
return 0;
}
static void emptyStack () { }
#if defined (_MSC_VER)
# pragma warning(push)
// Suppress warning 4748 "/GS can not protect parameters and local
// variables from local buffer overrun because optimizations are
// disabled in function"
# pragma warning(disable: 4748)
#endif /* _MSC_VER */
static int
cs_operate(int (*func)(struct frame_state const *, void *), void *usrarg,
size_t starting_frame, size_t num_frames)
{
dbghelp_functions dbg;
if (!load_dbghelp_library_if_needed (&dbg))
{
ACE_OS::strcpy (static_cast<char *> (usrarg),
"<error loading dbghelp.dll>");
if (dbg.hMod) FreeLibrary (dbg.hMod);
return 1;
}
frame_state fs;
ZeroMemory (&fs.sf, sizeof (fs.sf));
fs.pDbg = &dbg;
emptyStack (); //Not sure what this should do, Chad?
CONTEXT c;
ZeroMemory (&c, sizeof (CONTEXT));
c.ContextFlags = CONTEXT_FULL;
# if defined (_M_IX86)
DWORD machine = IMAGE_FILE_MACHINE_I386;
__asm {
call x
x: pop eax
mov c.Eip, eax
mov c.Ebp, ebp
mov c.Esp, esp
}
fs.sf.AddrPC.Offset = c.Eip;
fs.sf.AddrStack.Offset = c.Esp;
fs.sf.AddrFrame.Offset = c.Ebp;
fs.sf.AddrPC.Mode = AddrModeFlat;
fs.sf.AddrStack.Mode = AddrModeFlat;
fs.sf.AddrFrame.Mode = AddrModeFlat;
# elif defined (_M_X64)
DWORD machine = IMAGE_FILE_MACHINE_AMD64;
RtlCaptureContext (&c);
fs.sf.AddrPC.Offset = c.Rip;
fs.sf.AddrFrame.Offset = c.Rsp; //should be Rbp or Rdi instead?
fs.sf.AddrStack.Offset = c.Rsp;
fs.sf.AddrPC.Mode = AddrModeFlat;
fs.sf.AddrFrame.Mode = AddrModeFlat;
fs.sf.AddrStack.Mode = AddrModeFlat;
# elif defined (_M_IA64)
DWORD machine = IMAGE_FILE_MACHINE_IA64;
RtlCaptureContext (&c);
fs.sf.AddrPC.Offset = c.StIIP;
fs.sf.AddrFrame.Offset = c.RsBSP;
fs.sf.AddrBStore.Offset = c.RsBSP;
fs.sf.AddrStack.Offset = c.IntSp;
fs.sf.AddrPC.Mode = AddrModeFlat;
fs.sf.AddrFrame.Mode = AddrModeFlat;
fs.sf.AddrBStore.Mode = AddrModeFlat;
fs.sf.AddrStack.Mode = AddrModeFlat;
# endif
fs.pSym = (PSYMBOL_INFO) GlobalAlloc (GMEM_FIXED,
sizeof (SYMBOL_INFO) +
sizeof (ACE_TCHAR) * (SYMSIZE - 1));
fs.pSym->SizeOfStruct = sizeof (SYMBOL_INFO);
fs.pSym->MaxNameLen = SYMSIZE * sizeof (ACE_TCHAR);
dbg.SymSetOptions (SYMOPT_DEFERRED_LOADS | SYMOPT_LOAD_LINES
| SYMOPT_FAIL_CRITICAL_ERRORS | dbg.SymGetOptions ());
dbg.SymInitialize (GetCurrentProcess (), 0, true);
//What does the "true" parameter mean when tracing the current process?
for (size_t current_frame = 0; current_frame < num_frames + starting_frame;
++current_frame)
{
BOOL ok = dbg.StackWalk64 (machine,
GetCurrentProcess (),
GetCurrentThread (),
&fs.sf, &c, 0,
dbg.SymFunctionTableAccess64,
dbg.SymGetModuleBase64, 0);
if (!ok || fs.sf.AddrFrame.Offset == 0)
break;
if (current_frame < starting_frame)
continue;
func (&fs, usrarg);
}
dbg.SymCleanup (GetCurrentProcess ());
GlobalFree (fs.pSym);
FreeLibrary (dbg.hMod);
return 0;
}
#if defined (_MSC_VER)
// Restore the warning state to what it was before entry.
# pragma warning(pop)
#endif /* _MSC_VER */
void
ACE_Stack_Trace::generate_trace (ssize_t starting_frame_offset,
size_t num_frames)
{
const size_t MAX_FRAMES = 128;
const ssize_t INITIAL_FRAME = 3;
if (num_frames == 0)
num_frames = MAX_FRAMES;
size_t starting_frame =
determine_starting_frame (INITIAL_FRAME, starting_frame_offset);
cs_operate (&add_frame_to_buf, &this->buf_[0], starting_frame, num_frames);
}
#else // Unsupported platform
void
ACE_Stack_Trace::generate_trace (ssize_t, size_t)
{
// Call determine_starting_frame() on HP aCC build to resolve declared
// method never referenced warning.
#if defined (__HP_aCC)
size_t starting_frame = determine_starting_frame (0, 0);
#endif
ACE_OS::strcpy (&this->buf_[0], UNSUPPORTED);
}
#endif
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