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