[c++-pthreads] C++ and posix threads

[David Abrahams]

Fergus Henderson <fjh at cs.mu.oz.au> writes:

> On 22-Dec-2003, Nathan Myers <ncm at cantrip.org> wrote:
>> On Tue, Dec 23, 2003 at 02:07:47AM +1100, Fergus Henderson wrote:
>
>>  	- make cancellation-safe C code also exception-safe, and 
>>  	  allow propagation of C++ exceptions through cancellation-safe
>>  	  C code
>> 
>>   While cancellation-safe C code might exist, in principle, we should 
>>   not contort our solution to try to accommodate it.  A correct C++ 
>>   library does not let exceptions escape to C code, so this case is 
>>   only of academic interest.
>
> Here I don't agree.

Though all the points you make in opposition are well-made, I wonder
if you really disagree with what I consider to be Nathan's most
important point:


        "While cancellation-safe C code might exist, in principle, 
         we should not contort our solution to try to accommodate it"

Fortunately, the question may be moot: is there really much we *can*
do with a C++ binding in order to "accomodate" cancellation-safe C
code?  Surely throwing an exception into C++ code which *probably*
doesn't expect it doesn't do anything to help C code which might be
cancellation-safe?

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com