| Filename | /2home/ss5/perl5/perlbrew/perls/perl-5.12.3/lib/5.12.3/x86_64-linux/IO/Select.pm |
| Statements | Executed 13 statements in 874µs |
| Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 13µs | 17µs | IO::Select::BEGIN@9 |
| 1 | 1 | 1 | 9µs | 79µs | IO::Select::BEGIN@10 |
| 1 | 1 | 1 | 8µs | 45µs | IO::Select::BEGIN@11 |
| 0 | 0 | 0 | 0s | 0s | IO::Select::_fileno |
| 0 | 0 | 0 | 0s | 0s | IO::Select::_max |
| 0 | 0 | 0 | 0s | 0s | IO::Select::_update |
| 0 | 0 | 0 | 0s | 0s | IO::Select::add |
| 0 | 0 | 0 | 0s | 0s | IO::Select::as_string |
| 0 | 0 | 0 | 0s | 0s | IO::Select::bits |
| 0 | 0 | 0 | 0s | 0s | IO::Select::can_read |
| 0 | 0 | 0 | 0s | 0s | IO::Select::can_write |
| 0 | 0 | 0 | 0s | 0s | IO::Select::count |
| 0 | 0 | 0 | 0s | 0s | IO::Select::exists |
| 0 | 0 | 0 | 0s | 0s | IO::Select::handles |
| 0 | 0 | 0 | 0s | 0s | IO::Select::has_error |
| 0 | 0 | 0 | 0s | 0s | IO::Select::has_exception |
| 0 | 0 | 0 | 0s | 0s | IO::Select::new |
| 0 | 0 | 0 | 0s | 0s | IO::Select::remove |
| 0 | 0 | 0 | 0s | 0s | IO::Select::select |
| Line | State ments |
Time on line |
Calls | Time in subs |
Code |
|---|---|---|---|---|---|
| 1 | # IO::Select.pm | ||||
| 2 | # | ||||
| 3 | # Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved. | ||||
| 4 | # This program is free software; you can redistribute it and/or | ||||
| 5 | # modify it under the same terms as Perl itself. | ||||
| 6 | |||||
| 7 | package IO::Select; | ||||
| 8 | |||||
| 9 | 3 | 19µs | 2 | 21µs | # spent 17µs (13+4) within IO::Select::BEGIN@9 which was called:
# once (13µs+4µs) by Net::SSH::BEGIN@8 at line 9 # spent 17µs making 1 call to IO::Select::BEGIN@9
# spent 4µs making 1 call to strict::import |
| 10 | 3 | 22µs | 2 | 149µs | # spent 79µs (9+70) within IO::Select::BEGIN@10 which was called:
# once (9µs+70µs) by Net::SSH::BEGIN@8 at line 10 # spent 79µs making 1 call to IO::Select::BEGIN@10
# spent 70µs making 1 call to warnings::register::import |
| 11 | 3 | 823µs | 2 | 83µs | # spent 45µs (8+38) within IO::Select::BEGIN@11 which was called:
# once (8µs+38µs) by Net::SSH::BEGIN@8 at line 11 # spent 45µs making 1 call to IO::Select::BEGIN@11
# spent 38µs making 1 call to vars::import |
| 12 | 1 | 500ns | require Exporter; | ||
| 13 | |||||
| 14 | 1 | 400ns | $VERSION = "1.17"; | ||
| 15 | |||||
| 16 | 1 | 6µs | @ISA = qw(Exporter); # This is only so we can do version checking | ||
| 17 | |||||
| 18 | sub VEC_BITS () {0} | ||||
| 19 | sub FD_COUNT () {1} | ||||
| 20 | sub FIRST_FD () {2} | ||||
| 21 | |||||
| 22 | sub new | ||||
| 23 | { | ||||
| 24 | my $self = shift; | ||||
| 25 | my $type = ref($self) || $self; | ||||
| 26 | |||||
| 27 | my $vec = bless [undef,0], $type; | ||||
| 28 | |||||
| 29 | $vec->add(@_) | ||||
| 30 | if @_; | ||||
| 31 | |||||
| 32 | $vec; | ||||
| 33 | } | ||||
| 34 | |||||
| 35 | sub add | ||||
| 36 | { | ||||
| 37 | shift->_update('add', @_); | ||||
| 38 | } | ||||
| 39 | |||||
| 40 | |||||
| 41 | sub remove | ||||
| 42 | { | ||||
| 43 | shift->_update('remove', @_); | ||||
| 44 | } | ||||
| 45 | |||||
| 46 | |||||
| 47 | sub exists | ||||
| 48 | { | ||||
| 49 | my $vec = shift; | ||||
| 50 | my $fno = $vec->_fileno(shift); | ||||
| 51 | return undef unless defined $fno; | ||||
| 52 | $vec->[$fno + FIRST_FD]; | ||||
| 53 | } | ||||
| 54 | |||||
| 55 | |||||
| 56 | sub _fileno | ||||
| 57 | { | ||||
| 58 | my($self, $f) = @_; | ||||
| 59 | return unless defined $f; | ||||
| 60 | $f = $f->[0] if ref($f) eq 'ARRAY'; | ||||
| 61 | ($f =~ /^\d+$/) ? $f : fileno($f); | ||||
| 62 | } | ||||
| 63 | |||||
| 64 | sub _update | ||||
| 65 | { | ||||
| 66 | my $vec = shift; | ||||
| 67 | my $add = shift eq 'add'; | ||||
| 68 | |||||
| 69 | my $bits = $vec->[VEC_BITS]; | ||||
| 70 | $bits = '' unless defined $bits; | ||||
| 71 | |||||
| 72 | my $count = 0; | ||||
| 73 | my $f; | ||||
| 74 | foreach $f (@_) | ||||
| 75 | { | ||||
| 76 | my $fn = $vec->_fileno($f); | ||||
| 77 | next unless defined $fn; | ||||
| 78 | my $i = $fn + FIRST_FD; | ||||
| 79 | if ($add) { | ||||
| 80 | if (defined $vec->[$i]) { | ||||
| 81 | $vec->[$i] = $f; # if array rest might be different, so we update | ||||
| 82 | next; | ||||
| 83 | } | ||||
| 84 | $vec->[FD_COUNT]++; | ||||
| 85 | vec($bits, $fn, 1) = 1; | ||||
| 86 | $vec->[$i] = $f; | ||||
| 87 | } else { # remove | ||||
| 88 | next unless defined $vec->[$i]; | ||||
| 89 | $vec->[FD_COUNT]--; | ||||
| 90 | vec($bits, $fn, 1) = 0; | ||||
| 91 | $vec->[$i] = undef; | ||||
| 92 | } | ||||
| 93 | $count++; | ||||
| 94 | } | ||||
| 95 | $vec->[VEC_BITS] = $vec->[FD_COUNT] ? $bits : undef; | ||||
| 96 | $count; | ||||
| 97 | } | ||||
| 98 | |||||
| 99 | sub can_read | ||||
| 100 | { | ||||
| 101 | my $vec = shift; | ||||
| 102 | my $timeout = shift; | ||||
| 103 | my $r = $vec->[VEC_BITS]; | ||||
| 104 | |||||
| 105 | defined($r) && (select($r,undef,undef,$timeout) > 0) | ||||
| 106 | ? handles($vec, $r) | ||||
| 107 | : (); | ||||
| 108 | } | ||||
| 109 | |||||
| 110 | sub can_write | ||||
| 111 | { | ||||
| 112 | my $vec = shift; | ||||
| 113 | my $timeout = shift; | ||||
| 114 | my $w = $vec->[VEC_BITS]; | ||||
| 115 | |||||
| 116 | defined($w) && (select(undef,$w,undef,$timeout) > 0) | ||||
| 117 | ? handles($vec, $w) | ||||
| 118 | : (); | ||||
| 119 | } | ||||
| 120 | |||||
| 121 | sub has_exception | ||||
| 122 | { | ||||
| 123 | my $vec = shift; | ||||
| 124 | my $timeout = shift; | ||||
| 125 | my $e = $vec->[VEC_BITS]; | ||||
| 126 | |||||
| 127 | defined($e) && (select(undef,undef,$e,$timeout) > 0) | ||||
| 128 | ? handles($vec, $e) | ||||
| 129 | : (); | ||||
| 130 | } | ||||
| 131 | |||||
| 132 | sub has_error | ||||
| 133 | { | ||||
| 134 | warnings::warn("Call to deprecated method 'has_error', use 'has_exception'") | ||||
| 135 | if warnings::enabled(); | ||||
| 136 | goto &has_exception; | ||||
| 137 | } | ||||
| 138 | |||||
| 139 | sub count | ||||
| 140 | { | ||||
| 141 | my $vec = shift; | ||||
| 142 | $vec->[FD_COUNT]; | ||||
| 143 | } | ||||
| 144 | |||||
| 145 | sub bits | ||||
| 146 | { | ||||
| 147 | my $vec = shift; | ||||
| 148 | $vec->[VEC_BITS]; | ||||
| 149 | } | ||||
| 150 | |||||
| 151 | sub as_string # for debugging | ||||
| 152 | { | ||||
| 153 | my $vec = shift; | ||||
| 154 | my $str = ref($vec) . ": "; | ||||
| 155 | my $bits = $vec->bits; | ||||
| 156 | my $count = $vec->count; | ||||
| 157 | $str .= defined($bits) ? unpack("b*", $bits) : "undef"; | ||||
| 158 | $str .= " $count"; | ||||
| 159 | my @handles = @$vec; | ||||
| 160 | splice(@handles, 0, FIRST_FD); | ||||
| 161 | for (@handles) { | ||||
| 162 | $str .= " " . (defined($_) ? "$_" : "-"); | ||||
| 163 | } | ||||
| 164 | $str; | ||||
| 165 | } | ||||
| 166 | |||||
| 167 | sub _max | ||||
| 168 | { | ||||
| 169 | my($a,$b,$c) = @_; | ||||
| 170 | $a > $b | ||||
| 171 | ? $a > $c | ||||
| 172 | ? $a | ||||
| 173 | : $c | ||||
| 174 | : $b > $c | ||||
| 175 | ? $b | ||||
| 176 | : $c; | ||||
| 177 | } | ||||
| 178 | |||||
| 179 | sub select | ||||
| 180 | { | ||||
| 181 | shift | ||||
| 182 | if defined $_[0] && !ref($_[0]); | ||||
| 183 | |||||
| 184 | my($r,$w,$e,$t) = @_; | ||||
| 185 | my @result = (); | ||||
| 186 | |||||
| 187 | my $rb = defined $r ? $r->[VEC_BITS] : undef; | ||||
| 188 | my $wb = defined $w ? $w->[VEC_BITS] : undef; | ||||
| 189 | my $eb = defined $e ? $e->[VEC_BITS] : undef; | ||||
| 190 | |||||
| 191 | if(select($rb,$wb,$eb,$t) > 0) | ||||
| 192 | { | ||||
| 193 | my @r = (); | ||||
| 194 | my @w = (); | ||||
| 195 | my @e = (); | ||||
| 196 | my $i = _max(defined $r ? scalar(@$r)-1 : 0, | ||||
| 197 | defined $w ? scalar(@$w)-1 : 0, | ||||
| 198 | defined $e ? scalar(@$e)-1 : 0); | ||||
| 199 | |||||
| 200 | for( ; $i >= FIRST_FD ; $i--) | ||||
| 201 | { | ||||
| 202 | my $j = $i - FIRST_FD; | ||||
| 203 | push(@r, $r->[$i]) | ||||
| 204 | if defined $rb && defined $r->[$i] && vec($rb, $j, 1); | ||||
| 205 | push(@w, $w->[$i]) | ||||
| 206 | if defined $wb && defined $w->[$i] && vec($wb, $j, 1); | ||||
| 207 | push(@e, $e->[$i]) | ||||
| 208 | if defined $eb && defined $e->[$i] && vec($eb, $j, 1); | ||||
| 209 | } | ||||
| 210 | |||||
| 211 | @result = (\@r, \@w, \@e); | ||||
| 212 | } | ||||
| 213 | @result; | ||||
| 214 | } | ||||
| 215 | |||||
| 216 | |||||
| 217 | sub handles | ||||
| 218 | { | ||||
| 219 | my $vec = shift; | ||||
| 220 | my $bits = shift; | ||||
| 221 | my @h = (); | ||||
| 222 | my $i; | ||||
| 223 | my $max = scalar(@$vec) - 1; | ||||
| 224 | |||||
| 225 | for ($i = FIRST_FD; $i <= $max; $i++) | ||||
| 226 | { | ||||
| 227 | next unless defined $vec->[$i]; | ||||
| 228 | push(@h, $vec->[$i]) | ||||
| 229 | if !defined($bits) || vec($bits, $i - FIRST_FD, 1); | ||||
| 230 | } | ||||
| 231 | |||||
| 232 | @h; | ||||
| 233 | } | ||||
| 234 | |||||
| 235 | 1 | 3µs | 1; | ||
| 236 | __END__ |