08-11-2006
Quote:
Originally Posted by rakish
If i type
and if i open a new fine and do:
(not in command mode)
what i get is only 50 lines
and unix says
do u know whats going on here??
Thankyou.
Sorry, I can't help you here. I just ran tests yanking 100000 and 200000 lines into a buffer and I can switch files and paste every line. Perhaps your tmp space isn't adequate?
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LEARN ABOUT MOJAVE
net::server::sig5.18
Net::Server::SIG(3) User Contributed Perl Documentation Net::Server::SIG(3)
NAME
Net::Server::SIG - adpf - Safer signal handling
SYNOPSIS
use Net::Server::SIG qw(register_sig check_sigs);
use IO::Select ();
use POSIX qw(WNOHANG);
my $select = IO::Select->new();
register_sig(PIPE => 'IGNORE',
HUP => 'DEFAULT',
USR1 => sub { print "I got a SIG $_[0]
"; },
USR2 => sub { print "I got a SIG $_[0]
"; },
CHLD => sub { 1 while waitpid(-1, WNOHANG) > 0; },
);
# add some handles to the select
$select->add(*STDIN);
# loop forever trying to stay alive
while(1) {
# do a timeout to see if any signals got passed us
# while we were processing another signal
my @fh = $select->can_read(10);
my $key;
my $val;
# this is the handler for safe (fine under unsafe also)
if (check_sigs()) {
# or my @sigs = check_sigs();
next unless @fh;
}
my $handle = $fh[@fh];
# do something with the handle
}
DESCRIPTION
Signals prior in Perl prior to 5.7 were unsafe. Since then signals have been implemented in a more safe algorithm. Net::Server::SIG
provides backwards compatibility, while still working reliably with newer releases.
Using a property of the select() function, Net::Server::SIG attempts to fix the unsafe problem. If a process is blocking on select() any
signal will short circuit the select. Using this concept, Net::Server::SIG does the least work possible (changing one bit from 0 to 1).
And depends upon the actual processing of the signals to take place immediately after the the select call via the "check_sigs" function.
See the example shown above and also see the sigtest.pl script located in the examples directory of this distribution.
FUNCTIONS
"register_sig($SIG => &code_ref)"
Takes key/value pairs where the key is the signal name, and the argument is either a code ref, or the words 'DEFAULT' or 'IGNORE'. The
function register_sig must be used in conjunction with check_sigs, and with a blocking select() function call -- otherwise, you will
observe the registered signal mysteriously vanish.
"unregister_sig($SIG)"
Takes the name of a signal as an argument. Calls register_sig with a this signal name and 'DEFAULT' as arguments (same as
register_sig(SIG,'DEFAULT')
"check_sigs()"
Checks to see if any registered signals have occured. If so, it will play the registered code ref for that signal. Return value is
array containing any SIGNAL names that had occured.
"sig_is_registered($SIG)"
Takes a signal name and returns any registered code_ref for that signal.
AUTHORS
Paul Seamons (paul@seamons.com)
Rob B Brown (rob@roobik.com) - Provided a sounding board and feedback in creating Net::Server::SIG and sigtest.pl.
LICENSE
This package may be distributed under the terms of either the
GNU General Public License
or the
Perl Artistic License
All rights reserved.
perl v5.18.2 2013-01-09 Net::Server::SIG(3)