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#include "backtrace.hh"
#include "string.hh"
#include "format.hh"
#if defined(__GLIBC__) || defined(__APPLE__)
# include <execinfo.h>
#elif defined(__CYGWIN__)
# include <windows.h>
# include <dbghelp.h>
# include <stdio.h>
#endif
#if defined(__linux__) || defined(__APPLE__)
# include <cstdlib>
#endif
namespace Kakoune
{
Backtrace::Backtrace()
{
#if defined(__GLIBC__) || defined(__APPLE__)
num_frames = backtrace(stackframes, max_frames);
#elif defined(__CYGWIN__)
num_frames = CaptureStackBackTrace(0, max_frames, stackframes, nullptr);
#endif
}
String Backtrace::desc() const
{
#if defined(__GLIBC__) || defined(__APPLE__)
char** symbols = backtrace_symbols(stackframes, num_frames);
ByteCount size = 0;
for (int i = 0; i < num_frames; ++i)
size += strlen(symbols[i]) + 1;
String res; res.reserve(size);
for (int i = 0; i < num_frames; ++i)
{
res += symbols[i];
res += "\n";
}
free(symbols);
return res;
#elif defined(__CYGWIN__)
HANDLE process = GetCurrentProcess();
static bool symbols_initialized = false;
if (not symbols_initialized)
{
SymInitialize(process, nullptr, true);
symbols_initialized = true;
}
alignas(SYMBOL_INFO) char symbol_info_buffer[sizeof(SYMBOL_INFO) + 256];
SYMBOL_INFO* symbol_info = reinterpret_cast<SYMBOL_INFO*>(symbol_info_buffer);
symbol_info->MaxNameLen = 255;
symbol_info->SizeOfStruct = sizeof(SYMBOL_INFO);
String res; // res.reserve(num_frames * 276);
for (int i = 0; i < num_frames; ++i)
{
SymFromAddr(process, (DWORD64)stackframes[i], 0, symbol_info);
char desc[276];
format_to(desc, "0x{} ({})\n", hex(symbol_info->Address), symbol_info->Name);
res += desc;
}
return res;
#else
return "<not implemented>";
#endif
}
}
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