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161 | |
161 | |
162 | =head2 SIGNAL WATCHERS |
162 | =head2 SIGNAL WATCHERS |
163 | |
163 | |
164 | You can listen for signals using a signal watcher, C<signal> is the signal |
164 | You can listen for signals using a signal watcher, C<signal> is the signal |
165 | I<name> without any C<SIG> prefix. Multiple signals events can be clumped |
165 | I<name> without any C<SIG> prefix. Multiple signals events can be clumped |
166 | together into one callback invocation, and callbakc invocation might or |
166 | together into one callback invocation, and callback invocation might or |
167 | might not be asynchronous. |
167 | might not be asynchronous. |
168 | |
168 | |
169 | These watchers might use C<%SIG>, so programs overwriting those signals |
169 | These watchers might use C<%SIG>, so programs overwriting those signals |
170 | directly will likely not work correctly. |
170 | directly will likely not work correctly. |
171 | |
171 | |
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247 | |
247 | |
248 | no warnings; |
248 | no warnings; |
249 | use strict; |
249 | use strict; |
250 | use Carp; |
250 | use Carp; |
251 | |
251 | |
252 | our $VERSION = '2.51'; |
252 | our $VERSION = '2.52'; |
253 | our $MODEL; |
253 | our $MODEL; |
254 | |
254 | |
255 | our $AUTOLOAD; |
255 | our $AUTOLOAD; |
256 | our @ISA; |
256 | our @ISA; |
257 | |
257 | |
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386 | or Carp::croak "required option 'pid' is missing"; |
386 | or Carp::croak "required option 'pid' is missing"; |
387 | |
387 | |
388 | $PID_CB{$pid}{$arg{cb}} = $arg{cb}; |
388 | $PID_CB{$pid}{$arg{cb}} = $arg{cb}; |
389 | |
389 | |
390 | unless ($WNOHANG) { |
390 | unless ($WNOHANG) { |
391 | $CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_child_wait); |
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392 | $WNOHANG = eval { require POSIX; &POSIX::WNOHANG } || 1; |
391 | $WNOHANG = eval { require POSIX; &POSIX::WNOHANG } || 1; |
393 | } |
392 | } |
394 | |
393 | |
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394 | unless ($CHLD_W) { |
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395 | $CHLD_W = AnyEvent->signal (signal => 'CHLD', cb => \&_child_wait); |
395 | # child could be a zombie already |
396 | # child could be a zombie already |
396 | $PID_IDLE ||= AnyEvent->timer (after => 0, cb => \&_child_wait); |
397 | $PID_IDLE ||= AnyEvent->timer (after => 0, cb => \&_child_wait); |
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398 | } |
397 | |
399 | |
398 | bless [$pid, $arg{cb}], "AnyEvent::Base::Child" |
400 | bless [$pid, $arg{cb}], "AnyEvent::Base::Child" |
399 | } |
401 | } |
400 | |
402 | |
401 | sub AnyEvent::Base::Child::DESTROY { |
403 | sub AnyEvent::Base::Child::DESTROY { |