Re: Access procedure to pointer

["Jeffrey R. Carter" <spam.jrcarter.not@spam.acm.org>]

S�bastien wrote:
> 
> Ok I use it really often then. Sorry if I'm a bit rude but you can easly 
> find POSIX signal implementation in ada in this document.
> 
> Ok there is the Signal reference in index "See interrups".
> 
> But the first sentence of C.3 is:
> "This clause specifies the language-defined model for hardware 
> interrupts in addition to mechanisms for handling interrupts."

I agree. This is a tough area; what constitutes and interrupt is highly 
compiler- and platform-dependent. The ARM does a decent job of defining a 
platform-independent approach to interrupt handling, but is not a good source 
for solutions to platform-dependent concepts such as POSIX signals.

However, the index reference "see interrupts" should indicate that (on some 
platforms, at least) "signal" is a synonym for "interrupt" and that in those 
cases C.3 applies to them as well. From there you might discover the existence 
of Ada.Interrupts.Names, and look at its implementation for your compiler, and 
there find SIGHUP as one of the names.

Then again, the ARM is not the most easily read document, and you might not (and 
didn't). The Ada-83 RM, while less formal and precise, was much more readable, 
and Ada-83 developers often referred to it. Many of us still like to refer to 
the ARM. Other sources might be better for others. Many people use the AARM, but 
it's not really any better for your problem.

-- 
Jeff Carter
"Unix and C are the ultimate computer viruses."
Richard Gabriel
99