Re: [c++-pthreads] Re: thread-safety definition
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Re: [c++-pthreads] Re: thread-safety definition
- To: Wil Evers <wil@xxxxxxxxxxxxxx>
- Subject: Re: [c++-pthreads] Re: thread-safety definition
- From: Ted Baker <baker@xxxxxxxxxx>
- Date: Mon, 12 Jan 2004 06:37:39 -0500
> I think it will. Even if cancellation is disabled while exceptions are
> in flight, a 'catch-everything-and-never-rethrow' block in a destructor
> will discard a cancellation exception when that destructor is triggered
> by a regular (non-exceptional, non-unwinding) exit from a block scope.
That is why you need to disable cancellation during the execution
of destructors (and C cancellation cleanup handlers).
> Call me paranoid, but as a C++ programmer, the thing that scares me most
> in the discussions on this list is a certain (perceived?) pressure to
> open the door for letting exceptions escape from destructors. Speaking
> for myself, all I can say is that such a license would break nearly
> every piece of non-trivial code I've written over the last eight years
> or so.
There is no need to let exceptions escape from destructors if you
disable cancellation during desctructor execution.
> - Wil
--Ted