1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
#!./perl
# Four-argument select
my $hires;
BEGIN {
chdir 't' if -d 't';
require './test.pl';
set_up_inc('.', '../lib');
$hires = eval 'use Time::HiResx "time"; 1';
}
skip_all("Win32 miniperl has no socket select")
if $^O eq "MSWin32" && is_miniperl();
plan (23);
my $blank = "";
eval {select undef, $blank, $blank, 0};
is ($@, "", 'select undef $blank $blank 0');
eval {select $blank, undef, $blank, 0};
is ($@, "", 'select $blank undef $blank 0');
eval {select $blank, $blank, undef, 0};
is ($@, "", 'select $blank $blank undef 0');
eval {select "", $blank, $blank, 0};
is ($@, "", 'select "" $blank $blank 0');
eval {select $blank, "", $blank, 0};
is ($@, "", 'select $blank "" $blank 0');
eval {select $blank, $blank, "", 0};
is ($@, "", 'select $blank $blank "" 0');
# Test with read-only copy-on-write empty string
my($rocow) = keys%{{""=>undef}};
Internals::SvREADONLY($rocow,1);
eval {select $rocow, $blank, $blank, 0};
is ($@, "", 'select $rocow $blank $blank 0');
eval {select $blank, $rocow, $blank, 0};
is ($@, "", 'select $blank $rocow $blank 0');
eval {select $blank, $blank, $rocow, 0};
is ($@, "", 'select $blank $blank $rocow 0');
eval {select "a", $blank, $blank, 0};
like ($@, qr/^Modification of a read-only value attempted/,
'select "a" $blank $blank 0');
eval {select $blank, "a", $blank, 0};
like ($@, qr/^Modification of a read-only value attempted/,
'select $blank "a" $blank 0');
eval {select $blank, $blank, "a", 0};
like ($@, qr/^Modification of a read-only value attempted/,
'select $blank $blank "a" 0');
my $sleep = 3;
# Actual sleep time on Windows may be rounded down to an integral
# multiple of the system clock tick interval. Clock tick interval
# is configurable, but usually about 15.625 milliseconds.
# time() however (if we haven;t loaded Time::HiRes), doesn't return
# fractional values, so the observed delay may be 1 second short.
#
# There is also a report that old linux kernels may return 0.5ms early:
# <20110520081714.GC17549@mars.tony.develop-help.com>.
#
my $under = $hires ? 0.1 : 1;
my $t0 = time;
select(undef, undef, undef, $sleep);
my $t1 = time;
my $diff = $t1-$t0;
ok($diff >= $sleep-$under, "select(u,u,u,\$sleep): at least $sleep seconds have passed");
note("diff=$diff under=$under");
my $empty = "";
vec($empty,0,1) = 0;
$t0 = time;
select($empty, undef, undef, $sleep);
$t1 = time;
$diff = $t1-$t0;
ok($diff >= $sleep-$under, "select(\$e,u,u,\$sleep): at least $sleep seconds have passed");
note("diff=$diff under=$under");
# [perl #120102] CORE::select ignoring timeout var's magic
{
package RT120102;
my $count = 0;
sub TIESCALAR { bless [] }
sub FETCH { $count++; 0.1 }
my $sleep;
tie $sleep, 'RT120102';
select (undef, undef, undef, $sleep);
::is($count, 1, 'RT120102');
}
package _131645{
sub TIESCALAR { bless [] }
sub FETCH { 0 }
sub STORE { }
}
tie $tie, _131645::;
select ($tie, undef, undef, $tie);
ok("no crash from select $numeric_tie, undef, undef, $numeric_tie");
SKIP: {
skip "Can't load modules under miniperl", 4 if is_miniperl;
my $SKIP_CR = sub {
skip shift, 4;
};
if ($^O =~ m<win32|vms>i) {
$SKIP_CR->("Perl's 4-arg select() in $^O only works with sockets.");
}
eval { require POSIX } or do {
$SKIP_CR->("Failed to load POSIX.pm: $@");
};
my $mask;
for (my $f=0; $f<100; $f++) {
my $fd = POSIX::dup(fileno \*STDOUT);
if (!defined $fd) {
$SKIP_CR->("dup(STDOUT): $!");
last UTF8TEST;
}
vec( my $curmask, $fd, 1 ) = 1;
if ($curmask =~ tr<\x80-\xff><>) {
note("FD = $fd");
$mask = $curmask;
last;
}
}
if (defined $mask) {
utf8::downgrade($mask);
my $mask2;
my $result = select $mask2 = $mask, undef, undef, 0;
isnt( $result, -1, 'select() read on non-utf8-flagged mask' );
utf8::upgrade($mask);
$result = select $mask2 = $mask, undef, undef, 0;
isnt( $result, -1, 'select() read on utf8-flagged mask' );
# ----------------------------------------
utf8::downgrade($mask);
$result = select undef, $mask2 = $mask, undef, 0;
isnt( $result, -1, 'select() write on non-utf8-flagged mask' );
utf8::upgrade($mask);
$result = select undef, $mask2 = $mask, undef, 0;
isnt( $result, -1, 'select() write on utf8-flagged mask' );
}
else {
$SKIP_CR->("No suitable file descriptor for UTF-8-flag test found.");
}
}
{
my $badmask = "\x{100}";
eval { select $badmask, undef, undef, 0 };
ok( $@, 'select() read fails when given a wide character' );
eval { select undef, $badmask, undef, 0 };
ok( $@, 'select() write fails when given a wide character' );
eval { select undef, undef, $badmask, 0 };
ok( $@, 'select() exception fails when given a wide character' );
}
|
