Hello,
I am using mico-2.3.11--patch-61 on Fedora-Core 3 (gcc 3.4.2).
I have created some value classes using DefaultValueRefCountBase class, because
some IDL interfaces declare value type. However, my
program crashes at remove_ref () of DefaultValueRefCountBase, when I am
executing my overload test programs (like 100,000 operation
calls).
This crash may be cause by race condition in DefaultValueRefCountBase
_remove_ref method.
void _remove_ref () {
if (_deref()) {
delete this;
}
else if (!_destructing && _count_refs () == -1) {
// orphaned circular graph
_add_ref ();
_release_members ();
delete this;
}
}
When first thread is executing _count_refs method, second thread can execute
“delete this” operation after _deref, and then first
thread crashes.
It seems SimpleValueRefCountBase does not have this problem, but I want to use
DefaultValueRefCountBase because it is CORBA
standard.
I am not sure how to fix this problem, is it possible to change the method to
thread safe?
Best regards,
--
Hideo KINAMI
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