51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
// Copyright (c) 2020-now by the Zeek Project. See LICENSE for details.
|
|
|
|
#pragma once
|
|
|
|
#include <cxxabi.h>
|
|
|
|
#include <array>
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace hilti::rt {
|
|
|
|
/** Captures a stack backtrace at construction time. */
|
|
class Backtrace {
|
|
public:
|
|
Backtrace();
|
|
Backtrace(const Backtrace& other) = default;
|
|
Backtrace(Backtrace&& other) = default;
|
|
~Backtrace() = default;
|
|
|
|
// Returns pointer to save stack space.
|
|
std::unique_ptr<std::vector<std::string>> backtrace() const;
|
|
|
|
friend bool operator==(const Backtrace& a, const Backtrace& b);
|
|
friend bool operator!=(const Backtrace& a, const Backtrace& b) { return ! (a == b); }
|
|
|
|
Backtrace& operator=(const Backtrace& other) = default;
|
|
Backtrace& operator=(Backtrace&& other) = default;
|
|
|
|
private:
|
|
using Callstack = std::array<void*, 32>;
|
|
std::shared_ptr<Callstack> _callstack = nullptr;
|
|
int _frames = -1;
|
|
};
|
|
|
|
bool operator==(const Backtrace& a, const Backtrace& b);
|
|
|
|
/** Wrapper around the ABI's C++ demangle function. */
|
|
inline std::string demangle(const std::string& symbol) {
|
|
int status;
|
|
char* dname = abi::__cxa_demangle(symbol.c_str(), nullptr, nullptr, &status);
|
|
std::string x = (dname && status == 0) ? dname : symbol;
|
|
if ( dname )
|
|
free(dname); // NOLINT
|
|
|
|
return x;
|
|
}
|
|
|
|
} // namespace hilti::rt
|