… | |
… | |
363 | might affect timers and time-outs. |
363 | might affect timers and time-outs. |
364 | |
364 | |
365 | When this is the case, you can call this method, which will update the |
365 | When this is the case, you can call this method, which will update the |
366 | event loop's idea of "current time". |
366 | event loop's idea of "current time". |
367 | |
367 | |
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|
368 | A typical example would be a script in a web server (e.g. C<mod_perl>) - |
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369 | when mod_perl executes the script, then the event loop will have the wrong |
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370 | idea about the "current time" (being potentially far in the past, when the |
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|
371 | script ran the last time). In that case you should arrange a call to C<< |
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|
372 | AnyEvent->now_update >> each time the web server process wakes up again |
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|
373 | (e.g. at the start of your script, or in a handler). |
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|
374 | |
368 | Note that updating the time I<might> cause some events to be handled. |
375 | Note that updating the time I<might> cause some events to be handled. |
369 | |
376 | |
370 | =back |
377 | =back |
371 | |
378 | |
372 | =head2 SIGNAL WATCHERS |
379 | =head2 SIGNAL WATCHERS |
… | |
… | |
395 | correctly. |
402 | correctly. |
396 | |
403 | |
397 | Example: exit on SIGINT |
404 | Example: exit on SIGINT |
398 | |
405 | |
399 | my $w = AnyEvent->signal (signal => "INT", cb => sub { exit 1 }); |
406 | my $w = AnyEvent->signal (signal => "INT", cb => sub { exit 1 }); |
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|
407 | |
|
|
408 | =head3 Restart Behaviour |
|
|
409 | |
|
|
410 | While restart behaviour is up to the event loop implementation, most will |
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|
411 | not restart syscalls (that includes L<Async::Interrupt> and AnyEvent's |
|
|
412 | pure perl implementation). |
|
|
413 | |
|
|
414 | =head3 Safe/Unsafe Signals |
|
|
415 | |
|
|
416 | Perl signals can be either "safe" (synchronous to opcode handling) or |
|
|
417 | "unsafe" (asynchronous) - the former might get delayed indefinitely, the |
|
|
418 | latter might corrupt your memory. |
|
|
419 | |
|
|
420 | AnyEvent signal handlers are, in addition, synchronous to the event loop, |
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|
421 | i.e. they will not interrupt your running perl program but will only be |
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|
422 | called as part of the normal event handling (just like timer, I/O etc. |
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|
423 | callbacks, too). |
400 | |
424 | |
401 | =head3 Signal Races, Delays and Workarounds |
425 | =head3 Signal Races, Delays and Workarounds |
402 | |
426 | |
403 | Many event loops (e.g. Glib, Tk, Qt, IO::Async) do not support attaching |
427 | Many event loops (e.g. Glib, Tk, Qt, IO::Async) do not support attaching |
404 | callbacks to signals in a generic way, which is a pity, as you cannot |
428 | callbacks to signals in a generic way, which is a pity, as you cannot |
… | |
… | |
1116 | |
1140 | |
1117 | BEGIN { AnyEvent::common_sense } |
1141 | BEGIN { AnyEvent::common_sense } |
1118 | |
1142 | |
1119 | use Carp (); |
1143 | use Carp (); |
1120 | |
1144 | |
1121 | our $VERSION = '5.12'; |
1145 | our $VERSION = '5.21'; |
1122 | our $MODEL; |
1146 | our $MODEL; |
1123 | |
1147 | |
1124 | our $AUTOLOAD; |
1148 | our $AUTOLOAD; |
1125 | our @ISA; |
1149 | our @ISA; |
1126 | |
1150 | |
1127 | our @REGISTRY; |
1151 | our @REGISTRY; |
1128 | |
|
|
1129 | our $WIN32; |
|
|
1130 | |
1152 | |
1131 | our $VERBOSE; |
1153 | our $VERBOSE; |
1132 | |
1154 | |
1133 | BEGIN { |
1155 | BEGIN { |
1134 | eval "sub WIN32(){ " . (($^O =~ /mswin32/i)*1) ." }"; |
1156 | eval "sub WIN32(){ " . (($^O =~ /mswin32/i)*1) ." }"; |
… | |
… | |
1386 | our ($SIG_COUNT, $SIG_TW); |
1408 | our ($SIG_COUNT, $SIG_TW); |
1387 | |
1409 | |
1388 | sub _signal_exec { |
1410 | sub _signal_exec { |
1389 | $HAVE_ASYNC_INTERRUPT |
1411 | $HAVE_ASYNC_INTERRUPT |
1390 | ? $SIGPIPE_R->drain |
1412 | ? $SIGPIPE_R->drain |
1391 | : sysread $SIGPIPE_R, my $dummy, 9; |
1413 | : sysread $SIGPIPE_R, (my $dummy), 9; |
1392 | |
1414 | |
1393 | while (%SIG_EV) { |
1415 | while (%SIG_EV) { |
1394 | for (keys %SIG_EV) { |
1416 | for (keys %SIG_EV) { |
1395 | delete $SIG_EV{$_}; |
1417 | delete $SIG_EV{$_}; |
1396 | $_->() for values %{ $SIG_CB{$_} || {} }; |
1418 | $_->() for values %{ $SIG_CB{$_} || {} }; |