// -*- C++ -*- Exception handling routines for throwing.
-// Copyright (C) 2001, 2003 Free Software Foundation, Inc.
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+// Free Software Foundation, Inc.
//
// This file is part of GCC.
//
static void
__gxx_exception_cleanup (_Unwind_Reason_Code code, _Unwind_Exception *exc)
{
+ // This cleanup is set only for primaries.
__cxa_exception *header = __get_exception_header_from_ue (exc);
- // If we haven't been caught by a foreign handler, then this is
- // some sort of unwind error. In that case just die immediately.
+ // We only want to be called through _Unwind_DeleteException.
// _Unwind_DeleteException in the HP-UX IA64 libunwind library
- // returns _URC_NO_REASON and not _URC_FOREIGN_EXCEPTION_CAUGHT
+ // returns _URC_NO_REASON and not _URC_FOREIGN_EXCEPTION_CAUGHT
// like the GCC _Unwind_DeleteException function does.
if (code != _URC_FOREIGN_EXCEPTION_CAUGHT && code != _URC_NO_REASON)
__terminate (header->terminateHandler);
- if (header->exceptionDestructor)
- header->exceptionDestructor (header + 1);
+#ifdef _GLIBCXX_ATOMIC_BUILTINS_4
+ if (__sync_sub_and_fetch (&header->referenceCount, 1) == 0)
+ {
+#endif
+ if (header->exceptionDestructor)
+ header->exceptionDestructor (header + 1);
- __cxa_free_exception (header + 1);
+ __cxa_free_exception (header + 1);
+#ifdef _GLIBCXX_ATOMIC_BUILTINS_4
+ }
+#endif
}
__cxxabiv1::__cxa_throw (void *obj, std::type_info *tinfo,
void (*dest) (void *))
{
+ // Definitely a primary.
__cxa_exception *header = __get_exception_header_from_obj (obj);
+ header->referenceCount = 1;
header->exceptionType = tinfo;
header->exceptionDestructor = dest;
header->unexpectedHandler = __unexpected_handler;
header->terminateHandler = __terminate_handler;
- __GXX_INIT_EXCEPTION_CLASS(header->unwindHeader.exception_class);
+ __GXX_INIT_PRIMARY_EXCEPTION_CLASS(header->unwindHeader.exception_class);
header->unwindHeader.exception_cleanup = __gxx_exception_cleanup;
#ifdef _GLIBCXX_SJLJ_EXCEPTIONS