| 1 | package transferqueue; |
1 | package transferqueue; |
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2 | |
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3 | my @reserve = ( |
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4 | [ 1_200_000, 2], |
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5 | [ 8_000_000, 1], |
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6 | [ 75_000_000, 1], |
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7 | ); |
| 2 | |
8 | |
| 3 | sub new { |
9 | sub new { |
| 4 | my $class = shift; |
10 | my $class = shift; |
| 5 | bless { |
11 | my $self = bless { |
| 6 | conns => $_[0], |
12 | slots => $_[0], |
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13 | lastspb => 0, |
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14 | avgspb => 0, |
| 7 | }, $class; |
15 | }, $class; |
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16 | $self->{reschedule} = Event->timer( |
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17 | after => 10, |
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18 | interval => 3, |
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19 | cb => sub { $self->wake_next }, |
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20 | ); |
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21 | $self; |
| 8 | } |
22 | } |
| 9 | |
23 | |
| 10 | sub start_transfer { |
24 | sub start_transfer { |
| 11 | my $self = shift; |
25 | my $self = shift; |
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26 | my $size = $_[0]; |
| 12 | |
27 | |
| 13 | my $trans = bless [ $self, $Coro::current ], transfer::; |
28 | my $transfer = bless { |
| 14 | Scalar::Util::weaken($trans->[0]); |
29 | queue => $self, |
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30 | time => $::NOW, |
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31 | size => $size, |
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32 | coro => $Coro::current, |
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33 | started => 0, |
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34 | }, transfer::; |
| 15 | |
35 | |
| 16 | push @{$self->{wait}}, $trans; |
36 | push @{$self->{wait}}, $transfer; |
| 17 | Scalar::Util::weaken($self->{wait}[-1]); |
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| 18 | |
37 | |
| 19 | if (--$self->{conns} >= 0) { |
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| 20 | $self->wake_next; |
38 | $self->wake_next; |
| 21 | } |
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| 22 | |
39 | |
| 23 | $trans; |
40 | $transfer; |
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41 | } |
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42 | |
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43 | sub sort { |
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44 | my @queue = grep $_, @{$_[0]{wait}}; |
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45 | |
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46 | $_->{spb} = ($::NOW-$_->{time}) / ($_->{size} || 1) for @queue; |
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47 | |
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48 | $_[0]{wait} = [sort { $b->{spb} <=> $a->{spb} } @queue]; |
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49 | |
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50 | Scalar::Util::weaken $_ for @{$_[0]{wait}}; |
| 24 | } |
51 | } |
| 25 | |
52 | |
| 26 | sub wake_next { |
53 | sub wake_next { |
| 27 | my $self = shift; |
54 | my $self = shift; |
| 28 | |
55 | |
| 29 | return unless $self->{conns} >= 0; |
56 | $self->sort; |
| 30 | |
57 | |
| 31 | if (@{$self->{wait}}) { |
58 | while (@{$self->{wait}}) { |
| 32 | while() { |
59 | my $size = $self->{wait}[0]{size}; |
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60 | my $min = 0; |
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61 | for (@reserve) { |
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62 | last if $size <= $_->[0]; |
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63 | $min += $_->[1]; |
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64 | } |
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65 | last unless $self->{slots} > $min; |
| 33 | my $transfer = shift @{$self->{wait}}; |
66 | my $transfer = shift @{$self->{wait}}; |
| 34 | if ($transfer) { |
67 | $self->{lastspb} = $transfer->{spb}; |
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68 | $self->{avgspb} = $self->{avgspb} * 0.99 + $transfer->{spb} * 0.01; |
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69 | $self->{started}++; |
| 35 | $transfer->wake; |
70 | $transfer->wake; |
| 36 | last; |
71 | last; |
| 37 | } |
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| 38 | } |
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| 39 | } |
72 | } |
| 40 | } |
73 | } |
| 41 | |
74 | |
| 42 | sub waiters { |
75 | sub waiters { |
| 43 | map $_->[1], @{$_[0]{wait}}; |
76 | $_[0]->sort; |
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77 | @{$_[0]{wait}}; |
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78 | } |
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79 | |
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80 | sub DESTROY { |
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81 | my $self = shift; |
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82 | |
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83 | $self->{reschedule}->cancel; |
| 44 | } |
84 | } |
| 45 | |
85 | |
| 46 | package transfer; |
86 | package transfer; |
| 47 | |
87 | |
| 48 | use Coro::Timer (); |
88 | use Coro::Timer (); |
| 49 | |
89 | |
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90 | sub wake { |
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91 | my $self = shift; |
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92 | |
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93 | $self->{alloc} = 1; |
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94 | $self->{queue}{slots}--; |
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95 | $self->{wake} and $self->{wake}->ready; |
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96 | } |
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97 | |
| 50 | sub try { |
98 | sub try { |
| 51 | my $self = shift; |
99 | my $self = shift; |
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100 | |
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101 | $self->{alloc} || do { |
| 52 | my $timeout = Coro::Timer::timeout $_[0]; |
102 | my $timeout = Coro::Timer::timeout $_[0]; |
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103 | local $self->{wake} = $self->{coro}; |
| 53 | |
104 | |
| 54 | Coro::schedule; |
105 | Coro::schedule; |
| 55 | |
106 | |
| 56 | return $self->[2]; |
107 | $self->{alloc}; |
| 57 | } |
108 | } |
| 58 | |
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| 59 | sub wake { |
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| 60 | my $self = shift; |
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| 61 | $self->[2] = 1; |
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| 62 | $self->[1]->ready; |
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| 63 | } |
109 | } |
| 64 | |
110 | |
| 65 | sub DESTROY { |
111 | sub DESTROY { |
| 66 | my $self = shift; |
112 | my $self = shift; |
| 67 | $self->[0]{conns}++; |
113 | |
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114 | if ($self->{alloc}) { |
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115 | $self->{queue}{slots}++; |
| 68 | $self->[0]->wake_next; |
116 | $self->{queue}->wake_next; |
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117 | } |
| 69 | } |
118 | } |
| 70 | |
119 | |
| 71 | package conn; |
120 | package conn; |
| 72 | |
121 | |
| 73 | our %blockuri; |
122 | our %blockuri; |
