Suppress a few compilation warnings in pp_hot.c.
[p5sagit/p5-mst-13.2.git] / t / op / alarm.t
CommitLineData
6ae8f908 1#!./perl
2
3BEGIN {
4 chdir 't';
5 @INC = '../lib';
6 require './test.pl';
7}
8
9BEGIN {
10 use Config;
11 if( !$Config{d_alarm} ) {
12 skip_all("alarm() not implemented on this platform");
13 }
14}
15
16plan tests => 4;
17my $Perl = which_perl();
18
19my $start_time = time;
20eval {
21 local $SIG{ALRM} = sub { die "ALARM!\n" };
22 alarm 3;
23
24 # perlfunc recommends against using sleep in combination with alarm.
25 1 while (time - $start_time < 6);
26};
27alarm 0;
28my $diff = time - $start_time;
29
30# alarm time might be one second less than you said.
31is( $@, "ALARM!\n", 'alarm w/$SIG{ALRM} vs inf loop' );
dfcfdb64 32ok( abs($diff - 3) <= 1, " right time" );
6ae8f908 33
34
35my $start_time = time;
36eval {
37 local $SIG{ALRM} = sub { die "ALARM!\n" };
38 alarm 3;
39 system(qq{$Perl -e "sleep 6"});
40};
41alarm 0;
42$diff = time - $start_time;
43
44# alarm time might be one second less than you said.
45is( $@, "ALARM!\n", 'alarm w/$SIG{ALRM} vs system()' );
46
6ffa69ae 47{
ee1db23e 48 local $TODO = "Why does system() block alarm() on $^O?"
afdf87ad 49 if $^O eq 'VMS' || $^O eq'MacOS' || $^O eq 'dos';
6ffa69ae 50 ok( abs($diff - 3) <= 1, " right time (waited $diff secs for 3-sec alarm)" );
51}