What is the purpose of signals and why do they exist in C?
thanks in advance
Jan 28 '08
11  1843 
In article <13************ *@corp.supernew s.com>,
Mark McIntyre <ma**********@s pamcop.netwrote :
>On the other hand, graphics, while very useful, couldn't be standardised
sensibly. On the other other hand, quite possibly if C were being
standardised today then networking would be included, since TCP/IP and
sockets are universal enough. However retrofitting it wouldn't be useful
- its already standardised elsewhere.
Standardizing socket call parameters might interfere with
Some Large Well-Known Company's "ability to invovate"; I understand
that a L.W-K.C. has already innovated something incompatible at the
API level with POSIX sockets.
--
So you found your solution
What will be your last contribution?
-- Supertramp (Fool's Overture) ro******@ibd.nr c-cnrc.gc.ca (Walter Roberson) writes:
In article <h7************ *************** ***@comcast.com >,
Eric Sosman <es*****@ieee-dot-org.invalidwrot e:
>>The Standard requires that after a signal handler
returns (if it can), the interrupted function proceeds as if
nothing had happened; a signal will not, for example, restart
a loop that was already in progress. This guarantee applies
even if the signal handler calls the interrupted function; thus,
a compiler cannot say "This function calls no others and hence
cannot be called recursively; I'll take shortcuts."
However, if the signal handler refers to any object with static
storage duration, and the operation is not -writing- to an
object of sig_atomic_type , the interrupted function might not
proceed "as if nothing had happened".
A "volatile sig_atomic_t" to be precise.
--
Best regards, _ _
.o. | Liege of Serenly Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michal "mina86" Nazarewicz (o o)
ooo +--<mina86*tlen.pl >--<jid:mina86*jab ber.org>--ooO--(_)--Ooo-- This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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