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Comparing EV/EV.pm (file contents):
Revision 1.127 by root, Sun Mar 28 15:48:21 2010 UTC vs.
Revision 1.132 by root, Thu Dec 30 07:28:47 2010 UTC

… …
77can use it through the L<AnyEvent> module, stay portable to other event 77can use it through the L<AnyEvent> module, stay portable to other event
78loops (if you don't rely on any watcher types not available through it) 78loops (if you don't rely on any watcher types not available through it)
79and still be faster than with any other event loop currently supported in 79and still be faster than with any other event loop currently supported in
80Perl. 80Perl.
81 81
82=head2 PORTING FROM EV 3.X to 4.X
83
84EV version 4 introduces a number of incompatible changes summarised
85here. According to the depreciation strategy used by libev, there is a
86compatibility layer in place so programs should continue to run unchanged
87(the XS interface lacks this layer, so programs using that one need to be
88updated).
89
90This compatibility layer will be switched off in some future release.
91
92All changes relevant to Perl are renames of symbols, functions and
93methods:
94
95 EV::loop => EV::run
96 EV::LOOP_NONBLOCK => EV::RUN_NOWAIT
97 EV::LOOP_ONESHOT => EV::RUN_ONCE
98
99 EV::unloop => EV::break
100 EV::UNLOOP_CANCEL => EV::BREAK_CANCEL
101 EV::UNLOOP_ONE => EV::BREAK_ONE
102 EV::UNLOOP_ALL => EV::BREAK_ALL
103
104 EV::TIMEOUT => EV::TIMER
105
106 EV::loop_count => EV::iteration
107 EV::loop_depth => EV::depth
108 EV::loop_verify => EV::verify
109
110The loop object methods corresponding to the functions above have been
111similarly renamed.
112
82=head2 MODULE EXPORTS 113=head2 MODULE EXPORTS
83 114
84This module does not export any symbols. 115This module does not export any symbols.
85 116
86=cut 117=cut
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88package EV; 119package EV;
89 120
90use common::sense; 121use common::sense;
91 122
92BEGIN { 123BEGIN {
93 our $VERSION = '4.00'; 124 our $VERSION = '4.02';
94 use XSLoader; 125 use XSLoader;
95 XSLoader::load "EV", $VERSION; 126 XSLoader::load "EV", $VERSION;
96} 127}
97 128
98@EV::IO::ISA = 129@EV::IO::ISA =
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950=item $w = $loop->check_ns ($callback) 981=item $w = $loop->check_ns ($callback)
951 982
952Call the callback just after the process wakes up again (after it has 983Call the callback just after the process wakes up again (after it has
953gathered events), but before any other callbacks have been invoked. 984gathered events), but before any other callbacks have been invoked.
954 985
955This is used to integrate other event-based software into the EV 986This can be used to integrate other event-based software into the EV
956mainloop: You register a prepare callback and in there, you create io and 987mainloop: You register a prepare callback and in there, you create io and
957timer watchers as required by the other software. Here is a real-world 988timer watchers as required by the other software. Here is a real-world
958example of integrating Net::SNMP (with some details left out): 989example of integrating Net::SNMP (with some details left out):
959 990
960 our @snmp_watcher; 991 our @snmp_watcher;
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994The callbacks of the created watchers will not be called as the watchers 1025The callbacks of the created watchers will not be called as the watchers
995are destroyed before this can happen (remember EV::check gets called 1026are destroyed before this can happen (remember EV::check gets called
996first). 1027first).
997 1028
998The C<check_ns> variant doesn't start (activate) the newly created watcher. 1029The C<check_ns> variant doesn't start (activate) the newly created watcher.
1030
1031=item EV::CHECK constant issues
1032
1033Like all other watcher types, there is a bitmask constant for use in
1034C<$revents> and other places. The C<EV::CHECK> is special as it has
1035the same name as the C<CHECK> sub called by Perl. This doesn't cause
1036big issues on newer perls (beginning with 5.8.9), but it means thatthe
1037constant must be I<inlined>, i.e. runtime calls will not work. That means
1038that as long as you always C<use EV> and then C<EV::CHECK> you are on the
1039safe side.
999 1040
1000=back 1041=back
1001 1042
1002 1043
1003=head3 FORK WATCHERS - the audacity to resume the event loop after a fork 1044=head3 FORK WATCHERS - the audacity to resume the event loop after a fork
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1147 1188
11481; 11891;
1149 1190
1150=head1 SEE ALSO 1191=head1 SEE ALSO
1151 1192
1193L<EV::MakeMaker> - MakeMaker interface to XS API, L<EV::ADNS>
1152L<EV::ADNS> (asynchronous DNS), L<Glib::EV> (makes Glib/Gtk2 use EV as 1194(asynchronous DNS), L<Glib::EV> (makes Glib/Gtk2 use EV as event
1153event loop), L<EV::Glib> (embed Glib into EV), L<Coro::EV> (efficient 1195loop), L<EV::Glib> (embed Glib into EV), L<Coro::EV> (efficient thread
1154coroutines with EV), L<Net::SNMP::EV> (asynchronous SNMP), L<AnyEvent> for 1196integration), L<Net::SNMP::EV> (asynchronous SNMP), L<AnyEvent> for
1155event-loop agnostic and portable event driven programming. 1197event-loop agnostic and portable event driven programming.
1156 1198
1157=head1 AUTHOR 1199=head1 AUTHOR
1158 1200
1159 Marc Lehmann <schmorp@schmorp.de> 1201 Marc Lehmann <schmorp@schmorp.de>

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