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#!./perl
BEGIN {
chdir 't';
@INC = '../lib';
require './test.pl';
}
BEGIN {
use Config;
if( !$Config{d_alarm} ) {
skip_all("alarm() not implemented on this platform");
}
}
plan tests => 4;
my $Perl = which_perl();
my $start_time = time;
eval {
local $SIG{ALRM} = sub { die "ALARM!\n" };
alarm 3;
# perlfunc recommends against using sleep in combination with alarm.
1 while (time - $start_time < 6);
};
alarm 0;
my $diff = 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" );
my $start_time = time;
eval {
local $SIG{ALRM} = sub { die "ALARM!\n" };
alarm 3;
system(qq{$Perl -e "sleep 6"});
};
alarm 0;
$diff = 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 VMS?' if $^O eq 'VMS';
ok( abs($diff - 3) <= 1, " right time (waited $diff secs for 3-sec alarm)" );
}
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