__cxxabiv1 Namespace Reference

Classes
struct	__cxa_eh_globals
struct	__cxa_exception

Functions
__cxa_eh_globals *	__cxa_get_globals (void) noexcept
__cxa_eh_globals *	__cxa_get_globals_fast (void) noexcept
void	__cxa_throw (void *thrownException, std::type_info *type, void(*destructor)(void *)) __attribute__((__noreturn__))
void *	__cxa_begin_catch (void *excObj) throw ()
void	__cxa_rethrow (void) __attribute__((__noreturn__))
void	__cxa_end_catch (void)

Function Documentation

void * __cxxabiv1::__cxa_begin_catch	(	void *	excObj	)
throw	(
	)

Definition at line 124 of file ExceptionTracerLib.cpp.

References folly::exception_tracer::getCxaBeginCatchCallbacks().

                                              {
  // excObj is a pointer to the unwindHeader in __cxa_exception
  static auto orig_cxa_begin_catch =
      reinterpret_cast<decltype(&__cxa_begin_catch)>(
          dlsym(RTLD_NEXT, "__cxa_begin_catch"));
  getCxaBeginCatchCallbacks().invoke(excObj);
  return orig_cxa_begin_catch(excObj);
}

void __cxxabiv1::__cxa_end_catch

(

void

)

Definition at line 133 of file ExceptionTracerLib.cpp.

References folly::exception_tracer::getCxaEndCatchCallbacks().

                       {
  static auto orig_cxa_end_catch = reinterpret_cast<decltype(&__cxa_end_catch)>(
      dlsym(RTLD_NEXT, "__cxa_end_catch"));
  getCxaEndCatchCallbacks().invoke();
  orig_cxa_end_catch();
}

__cxa_eh_globals* __cxxabiv1::__cxa_get_globals ( void  )

noexcept

Referenced by folly::exception_tracer::getCurrentExceptions(), and folly::uncaught_exceptions().

__cxa_eh_globals* __cxxabiv1::__cxa_get_globals_fast ( void  )

noexcept

Referenced by getExceptionStackTraceStack().

void __cxxabiv1::__cxa_rethrow

(

void

)

Definition at line 111 of file ExceptionTracerLib.cpp.

References folly::exception_tracer::getCxaRethrowCallbacks().

                     {
  // __cxa_rethrow leaves the current exception on the caught stack,
  // and __cxa_begin_catch recognizes that case.  We could do the same, but
  // we'll implement something simpler (and slower): we pop the exception from
  // the caught stack, and push it back onto the active stack; this way, our
  // implementation of __cxa_begin_catch doesn't have to do anything special.
  static auto orig_cxa_rethrow = reinterpret_cast<decltype(&__cxa_rethrow)>(
      dlsym(RTLD_NEXT, "__cxa_rethrow"));
  getCxaRethrowCallbacks().invoke();
  orig_cxa_rethrow();
  __builtin_unreachable(); // orig_cxa_rethrow never returns
}

void __cxxabiv1::__cxa_throw	(	void *	thrownException,
		std::type_info *	type,
		void(*)(void *)	destructor
	)

Definition at line 100 of file ExceptionTracerLib.cpp.

References folly::exception_tracer::getCxaThrowCallbacks().

                               {
  static auto orig_cxa_throw =
      reinterpret_cast<decltype(&__cxa_throw)>(dlsym(RTLD_NEXT, "__cxa_throw"));
  getCxaThrowCallbacks().invoke(thrownException, type, destructor);
  orig_cxa_throw(thrownException, type, destructor);
  __builtin_unreachable(); // orig_cxa_throw never returns
}