| 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 => 1, |
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13 | maxsize => 0, |
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14 | lastspb => 0, |
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15 | avgspb => 0, |
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16 | @_, |
| 7 | }, $class; |
17 | }, $class; |
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18 | $self->{reschedule} = Event->timer( |
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19 | after => 10, |
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20 | interval => 3, |
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21 | cb => sub { $self->wake_next }, |
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22 | ); |
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23 | $self; |
| 8 | } |
24 | } |
| 9 | |
25 | |
| 10 | sub start_transfer { |
26 | sub start_transfer { |
| 11 | my $self = shift; |
27 | my $self = shift; |
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28 | my $size = $_[0]; |
| 12 | |
29 | |
| 13 | my $trans = bless [ $self, $Coro::current ], transfer::; |
30 | if ($self->{maxsize} && $self->{maxsize} < $size) { |
| 14 | print "$self $trans $trans->[0] <<\n";#d# |
31 | $size = $self->{maxsize}; |
| 15 | Scalar::Util::weaken($trans->[0]); |
32 | } |
| 16 | |
33 | |
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34 | my $transfer = bless { |
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35 | queue => $self, |
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36 | time => $::NOW, |
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37 | size => $size, |
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38 | coro => $Coro::current, |
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39 | started => 0, |
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40 | }, transfer::; |
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41 | |
| 17 | push @{$self->{wait}}, $trans; |
42 | push @{$self->{wait}}, $transfer; |
| 18 | |
43 | |
| 19 | if (--$self->{conns} >= 0) { |
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| 20 | $self->wake_next; |
44 | $self->wake_next; |
| 21 | } |
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| 22 | |
45 | |
| 23 | $trans; |
46 | $transfer; |
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47 | } |
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48 | |
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49 | sub sort { |
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50 | my @queue = grep $_, @{$_[0]{wait}}; |
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51 | |
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52 | $_->{spb} = ($::NOW-$_->{time}) / ($_->{size} || 1) for @queue; |
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53 | |
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54 | $_[0]{wait} = [sort { $b->{spb} <=> $a->{spb} } @queue]; |
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55 | |
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56 | Scalar::Util::weaken $_ for @{$_[0]{wait}}; |
| 24 | } |
57 | } |
| 25 | |
58 | |
| 26 | sub wake_next { |
59 | sub wake_next { |
| 27 | my $self = shift; |
60 | my $self = shift; |
| 28 | |
61 | |
| 29 | return unless $self->{conns} >= 0; |
62 | $self->sort; |
| 30 | |
63 | |
| 31 | (pop @{$self->{wait}})->wake if @{$self->{wait}}; |
64 | while (@{$self->{wait}}) { |
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65 | my $size = $self->{wait}[0]{size}; |
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66 | my $min = 0; |
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67 | for (@reserve) { |
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68 | last if $size <= $_->[0]; |
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69 | $min += $_->[1]; |
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70 | } |
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71 | last unless $self->{slots} > $min; |
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72 | my $transfer = shift @{$self->{wait}}; |
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73 | $self->{lastspb} = $transfer->{spb}; |
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74 | $self->{avgspb} = $self->{avgspb} * 0.99 + $transfer->{spb} * 0.01; |
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75 | $self->{started}++; |
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76 | $transfer->wake; |
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77 | last; |
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78 | } |
| 32 | } |
79 | } |
| 33 | |
80 | |
| 34 | sub waiters { |
81 | sub waiters { |
| 35 | map $_->[1], @{$_[0]{wait}}; |
82 | $_[0]->sort; |
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83 | @{$_[0]{wait}}; |
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84 | } |
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85 | |
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86 | sub DESTROY { |
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87 | my $self = shift; |
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88 | |
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89 | $self->{reschedule}->cancel; |
| 36 | } |
90 | } |
| 37 | |
91 | |
| 38 | package transfer; |
92 | package transfer; |
| 39 | |
93 | |
| 40 | use Coro::Timer (); |
94 | use Coro::Timer (); |
| 41 | |
95 | |
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96 | sub wake { |
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97 | my $self = shift; |
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98 | |
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99 | $self->{alloc} = 1; |
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100 | $self->{queue}{slots}--; |
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101 | $self->{wake} and $self->{wake}->ready; |
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102 | } |
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103 | |
| 42 | sub try { |
104 | sub try { |
| 43 | my $self = shift; |
105 | my $self = shift; |
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106 | |
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107 | $self->{alloc} || do { |
| 44 | my $timeout = Coro::Timer::timeout $_[0]; |
108 | my $timeout = Coro::Timer::timeout $_[0]; |
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109 | local $self->{wake} = $self->{coro}; |
| 45 | |
110 | |
| 46 | Coro::schedule; |
111 | Coro::schedule; |
| 47 | |
112 | |
| 48 | return $self->[2]; |
113 | $self->{alloc}; |
| 49 | } |
114 | } |
| 50 | |
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| 51 | sub wake { |
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| 52 | my $self = shift; |
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| 53 | $self->[2] = 1; |
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| 54 | $self->[1]->ready; |
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| 55 | } |
115 | } |
| 56 | |
116 | |
| 57 | sub DESTROY { |
117 | sub DESTROY { |
| 58 | my $self = shift; |
118 | my $self = shift; |
| 59 | $self->[0]{conns}++; |
119 | |
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120 | if ($self->{alloc}) { |
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121 | $self->{queue}{slots}++; |
| 60 | $self->[0]->wake_next; |
122 | $self->{queue}->wake_next; |
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123 | } |
| 61 | } |
124 | } |
| 62 | |
125 | |
| 63 | package conn; |
126 | package conn; |
| 64 | |
127 | |
| 65 | our %blockuri; |
128 | our %blockuri; |
