| 1 | package transferqueue; |
1 | package transferqueue; |
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2 | |
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3 | my @reserve = ( |
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4 | [ 1_000_000, 1], |
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5 | [ 10_000_000, 1], |
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6 | ); |
| 2 | |
7 | |
| 3 | sub new { |
8 | sub new { |
| 4 | my $class = shift; |
9 | my $class = shift; |
| 5 | bless { |
10 | bless { |
| 6 | conns => $_[0], |
11 | slots => $_[0], |
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12 | lastspb => 0, |
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13 | avgspb => 0, |
| 7 | }, $class; |
14 | }, $class; |
| 8 | } |
15 | } |
| 9 | |
16 | |
| 10 | sub start_transfer { |
17 | sub start_transfer { |
| 11 | my $self = shift; |
18 | my $self = shift; |
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19 | my $size = $_[0]; |
| 12 | |
20 | |
| 13 | my $trans = bless [ $self ], transfer::; |
21 | my $transfer = bless { |
| 14 | Scalar::Util::weaken($trans->[0]); |
22 | queue => $self, |
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23 | time => $::NOW, |
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24 | size => $size, |
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25 | coro => $Coro::current, |
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26 | started => 0, |
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27 | }, transfer::; |
| 15 | |
28 | |
| 16 | push @{$self->{wait}}, $trans; |
29 | push @{$self->{wait}}, $transfer; |
| 17 | Scalar::Util::weaken($self->{wait}[-1]); |
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| 18 | |
30 | |
| 19 | --$self->{conns}; |
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| 20 | $self->wake_next; |
31 | $self->wake_next; |
| 21 | |
32 | |
| 22 | $trans; |
33 | $transfer; |
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34 | } |
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35 | |
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36 | sub sort { |
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37 | my @queue = grep $_, @{$_[0]{wait}}; |
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38 | |
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39 | $_->{spb} = ($::NOW-$_->{time}) / ($_->{size} || 1) for @queue; |
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40 | |
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41 | $_[0]{wait} = [sort { $b->{spb} <=> $a->{spb} } @queue]; |
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42 | |
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43 | Scalar::Util::weaken $_ for @{$_[0]{wait}}; |
| 23 | } |
44 | } |
| 24 | |
45 | |
| 25 | sub wake_next { |
46 | sub wake_next { |
| 26 | my $self = shift; |
47 | my $self = shift; |
| 27 | |
48 | |
| 28 | if ($self->{conns} >= 0) { |
49 | $self->sort; |
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50 | |
| 29 | while(@{$self->{wait}}) { |
51 | while (@{$self->{wait}}) { |
| 30 | my $transfer = shift @{$self->{wait}}; |
52 | my $size = $self->{wait}[0]{size}; |
| 31 | if ($transfer) { |
53 | my $min = 0; |
| 32 | $transfer->wake; |
54 | for (@reserve) { |
| 33 | last; |
55 | last if $size <= $_->[0]; |
| 34 | } |
56 | $min += $_->[1]; |
| 35 | } |
57 | } |
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58 | last unless $self->{slots} > $min; |
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59 | my $transfer = shift @{$self->{wait}}; |
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60 | $self->{lastspb} = $transfer->{spb}; |
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61 | $self->{avgspb} ||= $transfer->{spb}; |
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62 | $self->{avgspb} = $self->{avgspb} * 0.95 + $transfer->{spb} * 0.05; |
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63 | $self->{started}++; |
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64 | $transfer->wake; |
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65 | last; |
| 36 | } |
66 | } |
| 37 | } |
67 | } |
| 38 | |
68 | |
| 39 | sub waiters { |
69 | sub waiters { |
| 40 | map $_->[1], @{$_[0]{wait}}; |
70 | $_[0]->sort; |
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71 | @{$_[0]{wait}}; |
| 41 | } |
72 | } |
| 42 | |
73 | |
| 43 | package transfer; |
74 | package transfer; |
| 44 | |
75 | |
| 45 | use Coro::Timer (); |
76 | use Coro::Timer (); |
| 46 | |
77 | |
| 47 | sub wake { |
78 | sub wake { |
| 48 | my $self = shift; |
79 | my $self = shift; |
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80 | |
| 49 | $self->[2] = 1; |
81 | $self->{alloc} = 1; |
| 50 | ref $self->[1] and $self->[1]->ready; |
82 | $self->{queue}{slots}--; |
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83 | $self->{wake} and $self->{wake}->ready; |
| 51 | } |
84 | } |
| 52 | |
85 | |
| 53 | sub try { |
86 | sub try { |
| 54 | my $self = shift; |
87 | my $self = shift; |
| 55 | |
88 | |
| 56 | unless ($self->[2]) { |
89 | $self->{alloc} || do { |
| 57 | my $timeout = Coro::Timer::timeout $_[0]; |
90 | my $timeout = Coro::Timer::timeout $_[0]; |
| 58 | $self->[1] = $Coro::current; |
91 | local $self->{wake} = $self->{coro}; |
| 59 | |
92 | |
| 60 | Coro::schedule; |
93 | Coro::schedule; |
| 61 | |
94 | |
| 62 | undef $self->[1]; |
95 | $self->{alloc}; |
| 63 | } |
96 | } |
| 64 | |
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| 65 | return $self->[2]; |
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| 66 | } |
97 | } |
| 67 | |
98 | |
| 68 | sub DESTROY { |
99 | sub DESTROY { |
| 69 | my $self = shift; |
100 | my $self = shift; |
| 70 | $self->[0]{conns}++; |
101 | |
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102 | if ($self->{alloc}) { |
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103 | $self->{queue}{slots}++; |
| 71 | $self->[0]->wake_next; |
104 | $self->{queue}->wake_next; |
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105 | } |
| 72 | } |
106 | } |
| 73 | |
107 | |
| 74 | package conn; |
108 | package conn; |
| 75 | |
109 | |
| 76 | our %blockuri; |
110 | our %blockuri; |
