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; |