6 @INC = ('.', '../lib');
7 $hires = eval 'use Time::HiResx "time"; 1';
12 skip_all("Win32 miniperl has no socket select")
13 if $^O eq "MSWin32" && is_miniperl();
18 eval {select undef, $blank, $blank, 0};
19 is ($@, "", 'select undef $blank $blank 0');
20 eval {select $blank, undef, $blank, 0};
21 is ($@, "", 'select $blank undef $blank 0');
22 eval {select $blank, $blank, undef, 0};
23 is ($@, "", 'select $blank $blank undef 0');
25 eval {select "", $blank, $blank, 0};
26 is ($@, "", 'select "" $blank $blank 0');
27 eval {select $blank, "", $blank, 0};
28 is ($@, "", 'select $blank "" $blank 0');
29 eval {select $blank, $blank, "", 0};
30 is ($@, "", 'select $blank $blank "" 0');
32 # Test with read-only copy-on-write empty string
33 my($rocow) = keys%{{""=>undef}};
34 Internals::SvREADONLY($rocow,1);
35 eval {select $rocow, $blank, $blank, 0};
36 is ($@, "", 'select $rocow $blank $blank 0');
37 eval {select $blank, $rocow, $blank, 0};
38 is ($@, "", 'select $blank $rocow $blank 0');
39 eval {select $blank, $blank, $rocow, 0};
40 is ($@, "", 'select $blank $blank $rocow 0');
42 eval {select "a", $blank, $blank, 0};
43 like ($@, qr/^Modification of a read-only value attempted/,
44 'select "a" $blank $blank 0');
45 eval {select $blank, "a", $blank, 0};
46 like ($@, qr/^Modification of a read-only value attempted/,
47 'select $blank "a" $blank 0');
48 eval {select $blank, $blank, "a", 0};
49 like ($@, qr/^Modification of a read-only value attempted/,
50 'select $blank $blank "a" 0');
53 # Actual sleep time on Windows may be rounded down to an integral
54 # multiple of the system clock tick interval. Clock tick interval
55 # is configurable, but usually about 15.625 milliseconds.
56 # time() however (if we haven;t loaded Time::HiRes), doesn't return
57 # fractional values, so the observed delay may be 1 second short.
59 # There is also a report that old linux kernels may return 0.5ms early:
60 # <20110520081714.GC17549@mars.tony.develop-help.com>.
63 my $under = $hires ? 0.1 : 1;
66 select(undef, undef, undef, $sleep);
69 ok($diff >= $sleep-$under, "select(u,u,u,\$sleep): at least $sleep seconds have passed");
70 note("diff=$diff under=$under");
75 select($empty, undef, undef, $sleep);
78 ok($diff >= $sleep-$under, "select(\$e,u,u,\$sleep): at least $sleep seconds have passed");
79 note("diff=$diff under=$under");
81 # [perl #120102] CORE::select ignoring timeout var's magic
88 sub TIESCALAR { bless [] }
89 sub FETCH { $count++; 0.1 }
93 tie $sleep, 'RT120102';
94 select (undef, undef, undef, $sleep);
95 ::is($count, 1, 'RT120102');