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Comparing AnyEvent/lib/AnyEvent.pm (file contents):
Revision 1.33 by root, Fri Nov 9 19:34:32 2007 UTC vs.
Revision 1.39 by root, Mon Jan 28 12:32:20 2008 UTC

… …
70You can create I/O watcher by calling the C<< AnyEvent->io >> method with 70You can create I/O watcher by calling the C<< AnyEvent->io >> method with
71the following mandatory arguments: 71the following mandatory arguments:
72 72
73C<fh> the Perl I<filehandle> (not filedescriptor) to watch for 73C<fh> the Perl I<filehandle> (not filedescriptor) to watch for
74events. C<poll> must be a string that is either C<r> or C<w>, that creates 74events. C<poll> must be a string that is either C<r> or C<w>, that creates
75a watcher waiting for "r"eadable or "w"ritable events. C<cb> teh callback 75a watcher waiting for "r"eadable or "w"ritable events. C<cb> the callback
76to invoke everytime the filehandle becomes ready. 76to invoke everytime the filehandle becomes ready.
77 77
78Only one io watcher per C<fh> and C<poll> combination is allowed (i.e. on 78Only one io watcher per C<fh> and C<poll> combination is allowed (i.e. on
79a socket you can have one r + one w, not any more (limitation comes from 79a socket you can have one r + one w, not any more (limitation comes from
80Tk - if you are sure you are not using Tk this limitation is gone). 80Tk - if you are sure you are not using Tk this limitation is gone).
… …
109 my $w = AnyEvent->timer (after => 7.7, cb => sub { 109 my $w = AnyEvent->timer (after => 7.7, cb => sub {
110 warn "timeout\n"; 110 warn "timeout\n";
111 }); 111 });
112 112
113 # to cancel the timer: 113 # to cancel the timer:
114 undef $w 114 undef $w;
115 115
116=head2 CONDITION WATCHERS 116=head2 CONDITION WATCHERS
117 117
118Condition watchers can be created by calling the C<< AnyEvent->condvar >> 118Condition watchers can be created by calling the C<< AnyEvent->condvar >>
119method without any arguments. 119method without any arguments.
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252no warnings; 252no warnings;
253use strict; 253use strict;
254 254
255use Carp; 255use Carp;
256 256
257our $VERSION = '2.55'; 257our $VERSION = '2.9';
258our $MODEL; 258our $MODEL;
259 259
260our $AUTOLOAD; 260our $AUTOLOAD;
261our @ISA; 261our @ISA;
262 262
… …
305 last; 305 last;
306 } 306 }
307 } 307 }
308 308
309 $MODEL 309 $MODEL
310 or die "No event module selected for AnyEvent and autodetect failed. Install any one of these modules: Event (or Coro+Event), Glib or Tk."; 310 or die "No event module selected for AnyEvent and autodetect failed. Install any one of these modules: EV (or Coro+EV), Event (or Coro+Event), Glib or Tk.";
311 } 311 }
312 312
313 unshift @ISA, $MODEL; 313 unshift @ISA, $MODEL;
314 push @{"$MODEL\::ISA"}, "AnyEvent::Base"; 314 push @{"$MODEL\::ISA"}, "AnyEvent::Base";
315 } 315 }
… …
373 373
374# default implementation for ->child 374# default implementation for ->child
375 375
376our %PID_CB; 376our %PID_CB;
377our $CHLD_W; 377our $CHLD_W;
378our $CHLD_DELAY_W;
378our $PID_IDLE; 379our $PID_IDLE;
379our $WNOHANG; 380our $WNOHANG;
380 381
381sub _child_wait { 382sub _child_wait {
382 while (0 <= (my $pid = waitpid -1, $WNOHANG)) { 383 while (0 < (my $pid = waitpid -1, $WNOHANG)) {
383 $_->($pid, $?) for (values %{ $PID_CB{$pid} || {} }), 384 $_->($pid, $?) for (values %{ $PID_CB{$pid} || {} }),
384 (values %{ $PID_CB{0} || {} }); 385 (values %{ $PID_CB{0} || {} });
385 } 386 }
386 387
387 undef $PID_IDLE; 388 undef $PID_IDLE;
388} 389}
389 390
391sub _sigchld {
392 # make sure we deliver these changes "synchronous" with the event loop.
393 $CHLD_DELAY_W ||= AnyEvent->timer (after => 0, cb => sub {
394 undef $CHLD_DELAY_W;
395 &_child_wait;
396 });
397}
398
390sub child { 399sub child {
391 my (undef, %arg) = @_; 400 my (undef, %arg) = @_;
392 401
393 defined (my $pid = $arg{pid} + 0) 402 defined (my $pid = $arg{pid} + 0)
394 or Carp::croak "required option 'pid' is missing"; 403 or Carp::croak "required option 'pid' is missing";
… …
398 unless ($WNOHANG) { 407 unless ($WNOHANG) {
399 $WNOHANG = eval { require POSIX; &POSIX::WNOHANG } || 1; 408 $WNOHANG = eval { require POSIX; &POSIX::WNOHANG } || 1;
400 } 409 }
401 410
402 unless ($CHLD_W) { 411 unless ($CHLD_W) {
403 $CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_child_wait); 412 $CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_sigchld);
404 # child could be a zombie already 413 # child could be a zombie already, so make at least one round
405 $PID_IDLE ||= AnyEvent->timer (after => 0, cb => \&_child_wait); 414 &_sigchld;
406 } 415 }
407 416
408 bless [$pid, $arg{cb}], "AnyEvent::Base::Child" 417 bless [$pid, $arg{cb}], "AnyEvent::Base::Child"
409} 418}
410 419

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