| Revision: | 1.6 |
| Committed: | Sat Dec 8 21:01:17 2007 UTC (16 years, 7 months ago) by root |
| Content type: | text/plain |
| Branch: | MAIN |
| CVS Tags: | rel-4_91, rel-5_0, rel-4_748, rel-4_8, rel-4_9, rel-4_741, rel-4_743, rel-4_742, rel-4_744, rel-4_747, rel-4_74, rel-4_71, rel-4_72, rel-4_73, rel-4_802, rel-4_803, rel-4_801, rel-4_804, rel-4_479, rel-4_50, rel-4_51, rel-4_4, rel-4_45, rel-4_745, rel-4_901, rel-4_49, rel-4_48, rel-4_746, rel-4_47, rel-4_46, rel-4_7, rel-4_911, rel-4_912, rel-4_32, rel-4_33, rel-4_34, rel-4_35, rel-4_36, rel-4_37 |
| Changes since 1.5: | +3 -9 lines |
| Log Message: | convert from Event to EV |
| # | Content |
|---|---|
| 1 | package tbf; |
| 2 | |
| 3 | # kind of token-bucket-filter |
| 4 | |
| 5 | my $max_per_client = $::TBF_MAX_PER_CLIENT || 24000; |
| 6 | |
| 7 | sub new { |
| 8 | my $class = shift; |
| 9 | my %arg = @_; |
| 10 | my $self = bless \%arg, $class; |
| 11 | |
| 12 | $self->{maxbucket} ||= $self->{rate} * 3; # max 3s bucket |
| 13 | $self->{minbucket} ||= $self->{rate}; # minimum bucket to share |
| 14 | $self->{interval} ||= $::BUFSIZE / $max_per_client; # good default interval |
| 15 | |
| 16 | if ($self->{rate}) { |
| 17 | $self->{w} = EV::periodic 0, $self->{interval}, undef, sub { |
| 18 | $self->inject ($self->{rate} * $self->{interval}); |
| 19 | }; |
| 20 | } else { |
| 21 | die "chaining not yet implemented\n"; |
| 22 | } |
| 23 | |
| 24 | $self; |
| 25 | } |
| 26 | |
| 27 | sub inject { |
| 28 | my ($self, $bytes) = @_; |
| 29 | |
| 30 | $self->{bucket} += $bytes; |
| 31 | |
| 32 | while ($self->{bucket} >= $self->{minbucket}) { |
| 33 | if ($self->{waitw}) { |
| 34 | my $rate = $self->{bucket} / $self->{waitw}; |
| 35 | |
| 36 | for my $v (values %{$self->{waitq}}) { |
| 37 | $self->{bucket} -= $rate * $v->[0]; |
| 38 | $v->[1] += $rate * $v->[0]; |
| 39 | |
| 40 | if ($v->[1] >= $v->[2]) { |
| 41 | $self->{bucket} += $v->[1] - $v->[2]; |
| 42 | $v->[3]->(); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | } |
| 47 | last; |
| 48 | } |
| 49 | |
| 50 | if ($self->{maxbucket} < $self->{bucket}) { |
| 51 | ::unused_bandwidth ($self->{bucket} - $self->{maxbucket}); |
| 52 | $self->{bucket} = $self->{maxbucket}; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | my $_tbf_id; |
| 57 | |
| 58 | sub request { |
| 59 | my ($self, $bytes, $weight) = @_; |
| 60 | |
| 61 | $weight ||= 1; |
| 62 | |
| 63 | my $coro = $Coro::current; |
| 64 | my $id = $_tbf_id++; |
| 65 | |
| 66 | $self->{waitw} += $weight; |
| 67 | $self->{waitq}{$id} = [$weight, 0, $bytes, sub { |
| 68 | delete $self->{waitq}{$id}; |
| 69 | $self->{waitw} -= $weight; |
| 70 | $coro->ready; |
| 71 | }]; |
| 72 | |
| 73 | Coro::schedule; |
| 74 | } |
| 75 | |
| 76 | 1; |