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Add decoding stack trace function names on Apple platforms

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This commit is contained in:
Wojtek Figat
2023-11-19 18:04:24 +01:00
parent 389bf89e2a
commit 4e190c2e3c
3 changed files with 43 additions and 7 deletions
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33
Source/Engine/Platform/Apple/ApplePlatform.cpp
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@@ -43,6 +43,7 @@
#include <dlfcn.h>
#if CRASH_LOG_ENABLE
#include <execinfo.h>
#include <cxxabi.h>
#endif
CPUInfo Cpu;
@@ -502,20 +503,42 @@ Array<ApplePlatform::StackFrame> ApplePlatform::GetStackFrames(int32 skipCount,
{
char** names = backtrace_symbols(callstack + skipCount, useCount);
result.Resize(useCount);
Array<StringAnsi> parts;
int32 len;
#define COPY_STR(str, dst) \
len = Math::Min<int32>(str.Length(), ARRAY_COUNT(frame.dst) - 1); \
Platform::MemoryCopy(frame.dst, str.Get(), len); \
frame.dst[len] = 0
for (int32 i = 0; i < useCount; i++)
{
char* name = names[i];
const StringAnsi name(names[i]);
StackFrame& frame = result[i];
frame.ProgramCounter = callstack[skipCount + i];
frame.ModuleName[0] = 0;
frame.FileName[0] = 0;
frame.LineNumber = 0;
int32 nameLen = Math::Min<int32>(StringUtils::Length(name), ARRAY_COUNT(frame.FunctionName) - 1);
Platform::MemoryCopy(frame.FunctionName, name, nameLen);
frame.FunctionName[nameLen] = 0;
// Decode name
parts.Clear();
name.Split(' ', parts);
if (parts.Count() == 6)
{
COPY_STR(parts[1], ModuleName);
const StringAnsiView toDemangle(parts[3]);
int status = 0;
char* demangled = __cxxabiv1::__cxa_demangle(*toDemangle, 0, 0, &status);
const StringAnsiView toCopy = demangled && status == 0 ? StringAnsiView(demangled) : StringAnsiView(toDemangle);
COPY_STR(toCopy, FunctionName);
if (demangled)
free(demangled);
}
else
{
COPY_STR(name, FunctionName);
}
}
free(names);
#undef COPY_STR
}
#endif
return result;