mirror of
https://github.com/scylladb/scylladb.git
synced 2026-04-22 01:20:39 +00:00
f3eade2f62
Drop the AGPL license in favor of a source-available license. See the blog post [1] for details. [1] https://www.scylladb.com/2024/12/18/why-were-moving-to-a-source-available-license/
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
|
|
/*
|
|
* Copyright (C) 2022-present ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <unwind.h>
|
|
#include <typeinfo>
|
|
#include <exception>
|
|
|
|
// This file defines structures/functions derived from the Itanium C++ ABI.
|
|
// Source: https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
|
|
|
|
namespace utils {
|
|
namespace abi {
|
|
|
|
// __cxa_exception (exception object header), as defined in section 2.2.1
|
|
struct cxa_exception {
|
|
std::type_info* exceptionType;
|
|
void (*exceptionDestructor)(void*);
|
|
void (*unexpectedHandler)();
|
|
std::terminate_handler terminateHandler;
|
|
cxa_exception* nextException;
|
|
|
|
int handlerCount;
|
|
int handlerSwitchValue;
|
|
const char* actionRecord;
|
|
const char* languageSpecificData;
|
|
void* catchTemp;
|
|
void* adjustedPtr;
|
|
|
|
_Unwind_Exception unwindHeader;
|
|
};
|
|
|
|
// Given a pointer to the exception data, returns the pointer
|
|
// to the __cxa_exception header.
|
|
inline cxa_exception* get_cxa_exception(void* eptr) {
|
|
// From section 2.2.1:
|
|
// "By convention, a __cxa_exception pointer points at the C++ object
|
|
// representing the exception being thrown, immediately following
|
|
// the header. The header structure is accessed at a negative offset
|
|
// from the __cxa_exception pointer."
|
|
return reinterpret_cast<cxa_exception*>(eptr) - 1;
|
|
}
|
|
|
|
} // abi
|
|
} // utils
|