RE: [boost] Re: Boost.threads: interthread exception conveyance

From: David Bergman (davidb_at_[hidden])
Date: 2002-08-24 12:56:15

Alex,

You mentioned a programming language, C. Its name resembles that of the
language used by Boost, but are we still, after The International
Standard, allowed to deduce semantics in C++ from its cousin (former
sibling) C? I am just curious if there are still implicit bridges in
semantics between the two, such as "any valid C program is also a valid
C++ program..."

But, yes, that comment is a good point. There is hope for at least some
debugging info even when we "abort".

/David

-----Original Message-----
From: boost-bounces_at_[hidden]
[mailto:boost-bounces_at_[hidden]] On Behalf Of Alexander Terekhov
Sent: Saturday, August 24, 2002 1:28 PM
To: boost_at_[hidden]
Subject: [boost] Re: Boost.threads: interthread exception conveyance

Peter Dimov wrote:
[...]
> What value do you return when the thread function has ended with an 
> exception?

Functions with non-empty exception specifications aside, unless that 
exception was explicitly "declared" to be propagated on join (whether 
a function has some non-void return value doesn't really matter, IMO), 
I'd "return" something along the lines of EXIT_FAILURE. ;-) ;-)

Well, actually, abort() [standard terminate() method/handler] will 
take care of it: < quoting ISO C standard, "99" version though >

"The abort function causes abnormal program termination to occur, 
 unless the signal SIGABRT is being caught and the signal handler 
 does not return. Whether open streams with unwritten buffered 
 data are flushed, open streams are closed, or temporary files 
 are removed is implementation-defined. An implementation-defined 
 form of the status unsuccessful termination is returned to the
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
 host environment by means of the function call raise(SIGABRT)."

regards,
alexander.

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