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… | |
| 402 | correctly. |
402 | correctly. |
| 403 | |
403 | |
| 404 | Example: exit on SIGINT |
404 | Example: exit on SIGINT |
| 405 | |
405 | |
| 406 | 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 | |
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408 | =head3 Restart Behaviour |
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409 | |
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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 |
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412 | pure perl implementation). |
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413 | |
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414 | =head3 Safe/Unsafe Signals |
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415 | |
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416 | Perl signals can be either "safe" (synchronous to opcode handling) or |
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417 | "unsafe" (asynchronous) - the former might get delayed indefinitely, the |
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418 | latter might corrupt your memory. |
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419 | |
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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). |
| 407 | |
424 | |
| 408 | =head3 Signal Races, Delays and Workarounds |
425 | =head3 Signal Races, Delays and Workarounds |
| 409 | |
426 | |
| 410 | 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 |
| 411 | 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 |
