| 1 | package transferqueue; |
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| 2 | |
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| 3 | sub new { |
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| 4 | my $class = shift; |
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| 5 | bless { |
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| 6 | conns => $_[0], |
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| 7 | }, $class; |
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| 8 | } |
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| 9 | |
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| 10 | sub start_transfer { |
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| 11 | my $self = shift; |
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| 12 | |
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| 13 | my $trans = bless [ $self ], transfer::; |
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| 14 | Scalar::Util::weaken($trans->[0]); |
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| 15 | |
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| 16 | push @{$self->{wait}}, $trans; |
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| 17 | Scalar::Util::weaken($self->{wait}[-1]); |
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| 18 | |
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| 19 | if (--$self->{conns} >= 0) { |
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| 20 | $self->wake_next; |
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| 21 | } |
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| 22 | |
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| 23 | $trans; |
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| 24 | } |
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| 25 | |
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| 26 | sub wake_next { |
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| 27 | my $self = shift; |
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| 28 | |
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| 29 | if ($self->{conns} >= 0) { |
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| 30 | while(@{$self->{wait}}) { |
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| 31 | my $transfer = shift @{$self->{wait}}; |
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| 32 | if ($transfer) { |
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| 33 | $transfer->wake; |
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| 34 | last; |
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| 35 | } |
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| 36 | } |
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| 37 | } |
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| 38 | } |
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| 39 | |
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| 40 | sub waiters { |
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| 41 | map $_->[1], @{$_[0]{wait}}; |
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| 42 | } |
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| 43 | |
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| 44 | package transfer; |
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| 45 | |
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| 46 | use Coro::Timer (); |
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| 47 | |
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| 48 | sub try { |
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| 49 | my $self = shift; |
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| 50 | my $timeout = Coro::Timer::timeout $_[0]; |
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| 51 | |
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| 52 | unless ($self->[2]) { |
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| 53 | local $self->[1] = $Coro::current; |
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| 54 | Coro::schedule; |
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| 55 | } |
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| 56 | |
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| 57 | return $self->[2]; |
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| 58 | } |
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| 59 | |
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| 60 | sub wake { |
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| 61 | my $self = shift; |
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| 62 | $self->[2] = 1; |
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| 63 | ref $self->[1] and $self->[1]->ready; |
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| 64 | } |
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| 65 | |
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| 66 | sub DESTROY { |
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| 67 | my $self = shift; |
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| 68 | $self->[0]{conns}++; |
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| 69 | $self->[0]->wake_next; |
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| 70 | } |
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| 71 | |
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| 72 | package conn; |
1 | package conn; |
| 73 | |
2 | |
| 74 | our %blockuri; |
3 | our %blockuri; |
| 75 | our $blockref; |
4 | our $blockref; |
| 76 | |
5 | |
