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#!./perl
BEGIN {
chdir 't' if -d 't';
require './test.pl';
set_up_inc('../lib');
}
use Config;
if ( !$Config{d_alarm} ) {
skip_all("alarm() not implemented on this platform");
}
plan tests => 5;
my $Perl = which_perl();
my ($start_time, $end_time);
eval {
local $SIG{ALRM} = sub { $end_time = time; die "ALARM!\n" };
$start_time = time;
alarm 3;
# perlfunc recommends against using sleep in combination with alarm.
1 while (($end_time = time) - $start_time < 6);
alarm 0;
};
alarm 0;
my $diff = $end_time - $start_time;
# alarm time might be one second less than you said.
is( $@, "ALARM!\n", 'alarm w/$SIG{ALRM} vs inf loop' );
ok( abs($diff - 3) <= 1, " right time (waited $diff secs for 3-sec alarm)" );
eval {
local $SIG{ALRM} = sub { $end_time = time; die "ALARM!\n" };
$start_time = time;
alarm 3;
system(qq{$Perl -e "sleep 6"});
$end_time = time;
alarm 0;
};
alarm 0;
$diff = $end_time - $start_time;
# alarm time might be one second less than you said.
is( $@, "ALARM!\n", 'alarm w/$SIG{ALRM} vs system()' );
{
local $TODO = "Why does system() block alarm() on $^O?"
if $^O eq 'VMS' || $^O eq 'dos';
ok( abs($diff - 3) <= 1, " right time (waited $diff secs for 3-sec alarm)" );
}
{
local $SIG{"ALRM"} = sub { die };
eval { alarm(1); my $x = qx($Perl -e "sleep 3"); alarm(0); };
chomp (my $foo = "foo\n");
ok($foo eq "foo", '[perl #33928] chomp() fails after alarm(), `sleep`');
}
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