[DGD] atomic functions

[pete at ana.sk]

Hi ppl.

Just a question (and maybe suggestion). Is there a way how to 
cancel execution of atomic function (and return something from 
that finctions as result too) without making error? I have not found 
any...
And if im right and there is nothing for it, would not it be good to 
have something like that? Maybe "abort" statement, that will act as 
return from atomic function, only it will also rollback everything 
done? Something like

atomic int do_something() /* return 1 ok, 0 aborted */
{
	...
	if(some condition)
		abort 0;
	...
	return 1;
}

..
if(do_something())
{
	/* It worked! */
	...
}

Pete

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