kakoune/src/safe_ptr.cc
Maxime Coste d356ae2419 Make safe_ptr able to track callstacks
The code stays disabled, as the performance penalty is quite
high, but can be enabled to help debugging safe pointers.
2014-08-12 19:18:10 +01:00

61 lines
1.2 KiB
C++

#include "safe_ptr.hh"
#ifdef SAFE_PTR_TRACK_CALLSTACKS
#include <string.h>
#if defined(__linux__)
# include <execinfo.h>
#elif defined(__CYGWIN__)
# include <windows.h>
#endif
namespace Kakoune
{
SafeCountable::Backtrace::Backtrace()
{
#if defined(__linux__)
num_frames = backtrace(stackframes, max_frames);
#elif defined(__CYGWIN__)
num_frames = CaptureStackBackTrace(0, max_frames, stackframes, nullptr);
#endif
}
const char* SafeCountable::Backtrace::desc() const
{
#if defined(__linux__)
char** symbols = backtrace_symbols(stackframes, num_frames);
int size = 0;
for (int i = 0; i < num_frames; ++i)
size += strlen(symbols[i]) + 1;
char* res = (char*)malloc(size+1);
res[0] = 0;
for (int i = 0; i < num_frames; ++i)
{
strcat(res, symbols[i]);
strcat(res, "\n");
}
free(symbols);
return res;
#elif defined(__CYGWIN__)
char* res = (char*)malloc(num_frames * 20);
res[0] = 0;
for (int i = 0; i < num_frames; ++i)
{
char addr[20];
snprintf(addr, 20, "0x%p", stackframes[i]);
strcat(res, addr);
}
return res;
#else
return "<not implemented>";
#endif
}
}
#endif