| 1 |
root |
1.1 |
package AnyEvent::Fork::RPC::Async; |
| 2 |
|
|
|
| 3 |
|
|
use common::sense; # actually required to avoid spurious warnings... |
| 4 |
|
|
|
| 5 |
|
|
use Errno (); |
| 6 |
|
|
|
| 7 |
|
|
use AnyEvent; |
| 8 |
|
|
|
| 9 |
|
|
# declare only |
| 10 |
|
|
sub AnyEvent::Fork::RPC::event; |
| 11 |
|
|
|
| 12 |
|
|
sub run { |
| 13 |
root |
1.6 |
my ($function, $init, $serialiser, $done) = splice @_, -4, 4; |
| 14 |
root |
1.4 |
my $rfh = shift; |
| 15 |
|
|
my $wfh = fileno $rfh ? $rfh : *STDOUT; |
| 16 |
root |
1.1 |
|
| 17 |
root |
1.5 |
$0 =~ s/^AnyEvent::Fork::RPC::Async::run of /$function of /; |
| 18 |
|
|
|
| 19 |
root |
1.1 |
{ |
| 20 |
|
|
package main; |
| 21 |
|
|
&$init if length $init; |
| 22 |
|
|
$function = \&$function; # resolve function early for extra speed |
| 23 |
|
|
} |
| 24 |
|
|
|
| 25 |
|
|
my $busy = 1; # exit when == 0 |
| 26 |
|
|
|
| 27 |
root |
1.8 |
my ($f, $t) = eval $serialiser; AE::log fatal => $@ if $@; |
| 28 |
root |
1.1 |
my ($wbuf, $ww); |
| 29 |
|
|
|
| 30 |
|
|
my $wcb = sub { |
| 31 |
root |
1.4 |
my $len = syswrite $wfh, $wbuf; |
| 32 |
root |
1.1 |
|
| 33 |
|
|
unless (defined $len) { |
| 34 |
|
|
if ($! != Errno::EAGAIN && $! != Errno::EWOULDBLOCK) { |
| 35 |
|
|
undef $ww; |
| 36 |
root |
1.8 |
AE::log fatal => "AnyEvent::Fork::RPC: write error ($!), parent gone?"; |
| 37 |
root |
1.1 |
} |
| 38 |
|
|
} |
| 39 |
|
|
|
| 40 |
|
|
substr $wbuf, 0, $len, ""; |
| 41 |
|
|
|
| 42 |
|
|
unless (length $wbuf) { |
| 43 |
|
|
undef $ww; |
| 44 |
root |
1.3 |
unless ($busy) { |
| 45 |
root |
1.4 |
shutdown $wfh, 1; |
| 46 |
root |
1.6 |
@_ = (); goto &$done; |
| 47 |
root |
1.3 |
} |
| 48 |
root |
1.1 |
} |
| 49 |
|
|
}; |
| 50 |
|
|
|
| 51 |
|
|
my $write = sub { |
| 52 |
|
|
$wbuf .= $_[0]; |
| 53 |
root |
1.4 |
$ww ||= AE::io $wfh, 1, $wcb; |
| 54 |
root |
1.1 |
}; |
| 55 |
|
|
|
| 56 |
|
|
*AnyEvent::Fork::RPC::event = sub { |
| 57 |
root |
1.4 |
$write->(pack "NN/a*", 0, &$f); |
| 58 |
root |
1.1 |
}; |
| 59 |
|
|
|
| 60 |
|
|
my ($rlen, $rbuf, $rw) = 512 - 16; |
| 61 |
|
|
|
| 62 |
root |
1.2 |
my $len; |
| 63 |
root |
1.1 |
|
| 64 |
root |
1.4 |
$rw = AE::io $rfh, 0, sub { |
| 65 |
root |
1.1 |
$rlen = $rlen * 2 + 16 if $rlen - 128 < length $rbuf; |
| 66 |
root |
1.4 |
$len = sysread $rfh, $rbuf, $rlen - length $rbuf, length $rbuf; |
| 67 |
root |
1.1 |
|
| 68 |
|
|
if ($len) { |
| 69 |
|
|
while (8 <= length $rbuf) { |
| 70 |
root |
1.4 |
(my $id, $len) = unpack "NN", $rbuf; |
| 71 |
root |
1.1 |
8 + $len <= length $rbuf |
| 72 |
|
|
or last; |
| 73 |
|
|
|
| 74 |
|
|
my @r = $t->(substr $rbuf, 8, $len); |
| 75 |
|
|
substr $rbuf, 0, 8 + $len, ""; |
| 76 |
|
|
|
| 77 |
|
|
++$busy; |
| 78 |
|
|
$function->(sub { |
| 79 |
|
|
--$busy; |
| 80 |
root |
1.4 |
$write->(pack "NN/a*", $id, &$f); |
| 81 |
root |
1.1 |
}, @r); |
| 82 |
|
|
} |
| 83 |
root |
1.7 |
} elsif (defined $len or $! == Errno::EINVAL) { # EINVAL is for microshit windoze |
| 84 |
root |
1.1 |
undef $rw; |
| 85 |
|
|
--$busy; |
| 86 |
root |
1.4 |
$ww ||= AE::io $wfh, 1, $wcb; |
| 87 |
root |
1.1 |
} elsif ($! != Errno::EAGAIN && $! != Errno::EWOULDBLOCK) { |
| 88 |
|
|
undef $rw; |
| 89 |
root |
1.8 |
AE::log fatal => "AnyEvent::Fork::RPC: read error in child: $!"; |
| 90 |
root |
1.1 |
} |
| 91 |
|
|
}; |
| 92 |
|
|
|
| 93 |
|
|
$AnyEvent::MODEL eq "EV" |
| 94 |
|
|
? EV::loop () |
| 95 |
|
|
: AE::cv->recv; |
| 96 |
|
|
} |
| 97 |
|
|
|
| 98 |
|
|
1 |
| 99 |
|
|
|
