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traces.cpp
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traces.cpp
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#include <iostream>
#include <cxxabi.h>
#include <sstream>
#include <execinfo.h>
#include <string>
#include <stdlib.h>
const int DUMP_STACK_DEPTH_MAX = 50;
template<class TI, class TO>
TO ToType (TI a)
{
std::stringstream ss;
ss << a;
TO b;
ss >> b;
return b;
}
class cStrace
{
public:
cStrace()
{
stack_strings = NULL;
for (int i=0; i<DUMP_STACK_DEPTH_MAX; i++)
{
stack_trace[i] = NULL;
}
}
void DoProcess()
{
depth = backtrace(stack_trace, DUMP_STACK_DEPTH_MAX);
stack_strings = (char**)backtrace_symbols(stack_trace, depth);
if (stack_strings == NULL)
{
m_sErrMsg += " Memory is not enough while dump Stack Trace! \n";
return;
}
m_sSrc+="Backtrace:\n";
for (int i=0; i<depth; i++)
{
m_sSrc+= ToType<int, std::string>(i);
m_sSrc+="\t";
m_sSrc+= stack_strings[i];
m_sSrc+= "\n";
m_sDst += "\n";
demangle(stack_strings[i], m_sDst);
}
}
void demangle(char * msg,std::string& out)
{
char *mangled_name = 0, *offset_begin = 0, *offset_end = 0,*src=msg;
for (char *p = msg; *p; ++p)
{
if (*p == '(')
{
mangled_name = p;
}
else if(*p == '+')
{
offset_begin = p;
}
else if(*p == ')')
{
offset_end = p;
break;
}
}
if (mangled_name && offset_begin && offset_end && mangled_name < offset_begin)
{
*mangled_name++ = '\0';
*offset_begin++ = '\0';
*offset_end++ = '\0';
int status;
char * real_name = abi::__cxa_demangle(mangled_name, 0, 0, &status);
if (status == 0)
{
out = out + real_name + "+" + offset_begin + offset_end;
}
else
{
out = out + mangled_name + "+" + offset_begin + offset_end;
}
free(real_name);
}
else
{
out += msg;
}
}
~cStrace()
{
if (stack_strings != NULL)
{
free(stack_strings);
stack_strings = NULL;
}
}
void Display()
{
std::cout <<m_sSrc;
std::cout <<"---------------------------\n";
std::cout <<m_sDst;
}
private:
std::string m_sErrMsg;
std::string m_sSrc;
std::string m_sDst;
int depth;
void *stack_trace[DUMP_STACK_DEPTH_MAX];
char **stack_strings;
};
class cTest
{
public:
void DoRun(int nCall)
{
if (nCall > 1)
{
DoRun(--nCall);
}
else
{
Func();
}
}
void Func()
{
trace.DoProcess();
trace.Display();
}
private:
cStrace trace;
};
int main()
{
cTest tst;
tst.DoRun(10);
}