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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.190 by root, Wed Nov 5 02:21:27 2008 UTC vs.
Revision 1.195 by root, Wed Mar 25 17:33:11 2009 UTC

… …
861no warnings; 861no warnings;
862use strict qw(vars subs); 862use strict qw(vars subs);
863 863
864use Carp; 864use Carp;
865 865
866our $VERSION = 4.32; 866our $VERSION = 4.341;
867our $MODEL; 867our $MODEL;
868 868
869our $AUTOLOAD; 869our $AUTOLOAD;
870our @ISA; 870our @ISA;
871 871
… …
1004# to support binding more than one watcher per filehandle (they usually 1004# to support binding more than one watcher per filehandle (they usually
1005# allow only one watcher per fd, so we dup it to get a different one). 1005# allow only one watcher per fd, so we dup it to get a different one).
1006sub _dupfh($$$$) { 1006sub _dupfh($$$$) {
1007 my ($poll, $fh, $r, $w) = @_; 1007 my ($poll, $fh, $r, $w) = @_;
1008 1008
1009 require Fcntl;
1010
1011 # cygwin requires the fh mode to be matching, unix doesn't 1009 # cygwin requires the fh mode to be matching, unix doesn't
1012 my ($rw, $mode) = $poll eq "r" ? ($r, "<") 1010 my ($rw, $mode) = $poll eq "r" ? ($r, "<")
1013 : $poll eq "w" ? ($w, ">") 1011 : $poll eq "w" ? ($w, ">")
1014 : Carp::croak "AnyEvent->io requires poll set to either 'r' or 'w'"; 1012 : Carp::croak "AnyEvent->io requires poll set to either 'r' or 'w'";
1015 1013
… …
1043 bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, AnyEvent::CondVar:: 1041 bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, AnyEvent::CondVar::
1044} 1042}
1045 1043
1046# default implementation for ->signal 1044# default implementation for ->signal
1047 1045
1048our %SIG_CB; 1046our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO);
1047
1048sub _signal_exec {
1049 while (%SIG_EV) {
1050 sysread $SIGPIPE_R, my $dummy, 4;
1051 for (keys %SIG_EV) {
1052 delete $SIG_EV{$_};
1053 $_->() for values %{ $SIG_CB{$_} || {} };
1054 }
1055 }
1056}
1049 1057
1050sub signal { 1058sub signal {
1051 my (undef, %arg) = @_; 1059 my (undef, %arg) = @_;
1052 1060
1061 unless ($SIGPIPE_R) {
1062 if (AnyEvent::WIN32) {
1063 ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe ();
1064 AnyEvent::Util::fh_nonblocking ($SIGPIPE_R) if $SIGPIPE_R;
1065 AnyEvent::Util::fh_nonblocking ($SIGPIPE_W) if $SIGPIPE_W; # just in case
1066 } else {
1067 pipe $SIGPIPE_R, $SIGPIPE_W;
1068 require Fcntl;
1069 fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R;
1070 fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case
1071 }
1072
1073 $SIGPIPE_R
1074 or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n";
1075
1076 $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec);
1077 }
1078
1053 my $signal = uc $arg{signal} 1079 my $signal = uc $arg{signal}
1054 or Carp::croak "required option 'signal' is missing"; 1080 or Carp::croak "required option 'signal' is missing";
1055 1081
1056 $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; 1082 $SIG_CB{$signal}{$arg{cb}} = $arg{cb};
1057 $SIG{$signal} ||= sub { 1083 $SIG{$signal} ||= sub {
1058 $_->() for values %{ $SIG_CB{$signal} || {} }; 1084 syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV;
1085 undef $SIG_EV{$signal};
1059 }; 1086 };
1060 1087
1061 bless [$signal, $arg{cb}], "AnyEvent::Base::Signal" 1088 bless [$signal, $arg{cb}], "AnyEvent::Base::Signal"
1062} 1089}
1063 1090
… …
1263used, and preference will be given to protocols mentioned earlier in the 1290used, and preference will be given to protocols mentioned earlier in the
1264list. 1291list.
1265 1292
1266This variable can effectively be used for denial-of-service attacks 1293This variable can effectively be used for denial-of-service attacks
1267against local programs (e.g. when setuid), although the impact is likely 1294against local programs (e.g. when setuid), although the impact is likely
1268small, as the program has to handle connection errors already- 1295small, as the program has to handle conenction and other failures anyways.
1269 1296
1270Examples: C<PERL_ANYEVENT_PROTOCOLS=ipv4,ipv6> - prefer IPv4 over IPv6, 1297Examples: C<PERL_ANYEVENT_PROTOCOLS=ipv4,ipv6> - prefer IPv4 over IPv6,
1271but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4> 1298but support both and try to use both. C<PERL_ANYEVENT_PROTOCOLS=ipv4>
1272- only support IPv4, never try to resolve or contact IPv6 1299- only support IPv4, never try to resolve or contact IPv6
1273addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or 1300addresses. C<PERL_ANYEVENT_PROTOCOLS=ipv6,ipv4> support either IPv4 or

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