diff options
Diffstat (limited to 'indra/llcommon/llexception.h')
| -rw-r--r-- | indra/llcommon/llexception.h | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/indra/llcommon/llexception.h b/indra/llcommon/llexception.h index dfcb7c192f..375bea4a57 100644 --- a/indra/llcommon/llexception.h +++ b/indra/llcommon/llexception.h @@ -67,9 +67,29 @@ struct LLContinueError: public LLException * enriches the exception's diagnostic_information() with the source file, * line and containing function of the LLTHROW() macro. */ -// Currently we implement that using BOOST_THROW_EXCEPTION(). Wrap it in -// LLTHROW() in case we ever want to revisit that implementation decision. -#define LLTHROW(x) BOOST_THROW_EXCEPTION(x) +#define LLTHROW(x) \ +do { \ + /* Capture the exception object 'x' by value. (Exceptions must */ \ + /* be copyable.) It might seem simpler to use */ \ + /* BOOST_THROW_EXCEPTION(annotate_exception_(x)) instead of */ \ + /* three separate statements, but: */ \ + /* - We want to throw 'x' with its original type, not just a */ \ + /* reference to boost::exception. */ \ + /* - To return x's original type, annotate_exception_() would */ \ + /* have to be a template function. */ \ + /* - We want annotate_exception_() to be opaque. */ \ + /* We also might consider embedding BOOST_THROW_EXCEPTION() in */ \ + /* our helper function, but we want the filename and line info */ \ + /* embedded by BOOST_THROW_EXCEPTION() to be the throw point */ \ + /* rather than always indicating the same line in */ \ + /* llexception.cpp. */ \ + auto exc{x}; \ + annotate_exception_(exc); \ + BOOST_THROW_EXCEPTION(exc); \ + /* Use the classic 'do { ... } while (0)' macro trick to wrap */ \ + /* our multiple statements. */ \ +} while (0) +void annotate_exception_(boost::exception& exc); /// Call this macro from a catch (...) clause #define CRASH_ON_UNHANDLED_EXCEPTION(CONTEXT) \ @@ -82,4 +102,14 @@ void crash_on_unhandled_exception_(const char*, int, const char*, const std::str log_unhandled_exception_(__FILE__, __LINE__, BOOST_CURRENT_FUNCTION, CONTEXT) void log_unhandled_exception_(const char*, int, const char*, const std::string&); + +#if LL_WINDOWS + +// SEH exception filtering for use in __try __except +// Separates C++ exceptions from C SEH exceptions +// Todo: might be good idea to do some kind of seh_to_msc_wrapper(function, ARGS&&); +U32 msc_exception_filter(U32 code, struct _EXCEPTION_POINTERS *exception_infop); + +#endif //LL_WINDOWS + #endif /* ! defined(LL_LLEXCEPTION_H) */ |