… | |
… | |
1334 | sub _sig_del { |
1334 | sub _sig_del { |
1335 | undef $SIG_TW |
1335 | undef $SIG_TW |
1336 | unless --$SIG_COUNT; |
1336 | unless --$SIG_COUNT; |
1337 | } |
1337 | } |
1338 | |
1338 | |
1339 | our %SIGNAME2NUM; |
|
|
1340 | our @SIGNUM2NAME; |
|
|
1341 | our $_sig_name_init; $_sig_name_init = sub { |
1339 | our $_sig_name_init; $_sig_name_init = sub { |
|
|
1340 | eval q{ # poor man's autoloading |
1342 | undef $_sig_name_init; |
1341 | undef $_sig_name_init; |
1343 | |
1342 | |
1344 | if (_have_async_interrupt) { |
1343 | if (_have_async_interrupt) { |
1345 | *sig2num = \&Async::Interrupt::sig2num; |
1344 | *sig2num = \&Async::Interrupt::sig2num; |
1346 | *sig2name = \&Async::Interrupt::sig2name; |
1345 | *sig2name = \&Async::Interrupt::sig2name; |
1347 | } else { |
1346 | } else { |
1348 | require Config; |
1347 | require Config; |
1349 | |
1348 | |
|
|
1349 | my %signame2num; |
1350 | @SIGNAME2NUM{ split ' ', $Config::Config{sig_name} } |
1350 | @signame2num{ split ' ', $Config::Config{sig_name} } |
1351 | = split ' ', $Config::Config{sig_num}; |
1351 | = split ' ', $Config::Config{sig_num}; |
1352 | @SIGNUM2NAME[values %SIGNAME2NUM] = keys %SIGNAME2NUM; |
|
|
1353 | |
1352 | |
|
|
1353 | my @signum2name; |
|
|
1354 | @signum2name[values %signame2num] = keys %signame2num; |
|
|
1355 | |
1354 | *sig2num = sub($) { |
1356 | *sig2num = sub($) { |
1355 | $_[0] > 0 ? shift : $SIGNAME2NUM{+shift} |
1357 | $_[0] > 0 ? shift : $signame2num{+shift} |
1356 | }; |
1358 | }; |
1357 | *sig2name = sub ($) { |
1359 | *sig2name = sub ($) { |
1358 | $_[0] > 0 ? $SIGNUM2NAME[+shift] : shift |
1360 | $_[0] > 0 ? $signum2name[+shift] : shift |
|
|
1361 | }; |
1359 | }; |
1362 | } |
1360 | } |
1363 | }; |
|
|
1364 | die if $@; |
1361 | }; |
1365 | }; |
1362 | |
1366 | |
1363 | sub sig2num ($) { &$_sig_name_init; &sig2num } |
1367 | sub sig2num ($) { &$_sig_name_init; &sig2num } |
1364 | sub sig2name($) { &$_sig_name_init; &sig2name } |
1368 | sub sig2name($) { &$_sig_name_init; &sig2name } |
1365 | |
1369 | |
1366 | sub _signal { |
1370 | sub signal { |
|
|
1371 | eval q{ # poor man's autoloading {} |
|
|
1372 | # probe for availability of Async::Interrupt |
|
|
1373 | if (_have_async_interrupt) { |
|
|
1374 | warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8; |
|
|
1375 | |
|
|
1376 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
|
|
1377 | $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R->fileno, poll => "r", cb => \&_signal_exec); |
|
|
1378 | |
|
|
1379 | } else { |
|
|
1380 | warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; |
|
|
1381 | |
|
|
1382 | require Fcntl; |
|
|
1383 | |
|
|
1384 | if (AnyEvent::WIN32) { |
|
|
1385 | require AnyEvent::Util; |
|
|
1386 | |
|
|
1387 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
|
|
1388 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_R, 1) if $SIGPIPE_R; |
|
|
1389 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_W, 1) if $SIGPIPE_W; # just in case |
|
|
1390 | } else { |
|
|
1391 | pipe $SIGPIPE_R, $SIGPIPE_W; |
|
|
1392 | fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R; |
|
|
1393 | fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case |
|
|
1394 | |
|
|
1395 | # not strictly required, as $^F is normally 2, but let's make sure... |
|
|
1396 | fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
|
|
1397 | fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
|
|
1398 | } |
|
|
1399 | |
|
|
1400 | $SIGPIPE_R |
|
|
1401 | or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n"; |
|
|
1402 | |
|
|
1403 | $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec); |
|
|
1404 | } |
|
|
1405 | |
|
|
1406 | *signal = sub { |
1367 | my (undef, %arg) = @_; |
1407 | my (undef, %arg) = @_; |
1368 | |
1408 | |
1369 | my $signal = uc $arg{signal} |
1409 | my $signal = uc $arg{signal} |
1370 | or Carp::croak "required option 'signal' is missing"; |
1410 | or Carp::croak "required option 'signal' is missing"; |
1371 | |
1411 | |
1372 | if ($HAVE_ASYNC_INTERRUPT) { |
1412 | if ($HAVE_ASYNC_INTERRUPT) { |
1373 | # async::interrupt |
1413 | # async::interrupt |
1374 | |
1414 | |
1375 | $signal = sig2num $signal; |
1415 | $signal = sig2num $signal; |
1376 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1416 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1377 | |
1417 | |
1378 | $SIG_ASY{$signal} ||= new Async::Interrupt |
1418 | $SIG_ASY{$signal} ||= new Async::Interrupt |
1379 | cb => sub { undef $SIG_EV{$signal} }, |
1419 | cb => sub { undef $SIG_EV{$signal} }, |
1380 | signal => $signal, |
1420 | signal => $signal, |
1381 | pipe => [$SIGPIPE_R->filenos], |
1421 | pipe => [$SIGPIPE_R->filenos], |
1382 | pipe_autodrain => 0, |
1422 | pipe_autodrain => 0, |
1383 | ; |
1423 | ; |
1384 | |
1424 | |
1385 | } else { |
1425 | } else { |
1386 | # pure perl |
1426 | # pure perl |
1387 | |
1427 | |
1388 | # AE::Util has been loaded in signal |
1428 | # AE::Util has been loaded in signal |
1389 | $signal = sig2name $signal; |
1429 | $signal = sig2name $signal; |
1390 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1430 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1391 | |
1431 | |
1392 | $SIG{$signal} ||= sub { |
1432 | $SIG{$signal} ||= sub { |
1393 | local $!; |
1433 | local $!; |
1394 | syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV; |
1434 | syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV; |
1395 | undef $SIG_EV{$signal}; |
1435 | undef $SIG_EV{$signal}; |
|
|
1436 | }; |
|
|
1437 | |
|
|
1438 | # can't do signal processing without introducing races in pure perl, |
|
|
1439 | # so limit the signal latency. |
|
|
1440 | _sig_add; |
|
|
1441 | } |
|
|
1442 | |
|
|
1443 | bless [$signal, $arg{cb}], "AnyEvent::Base::signal" |
1396 | }; |
1444 | }; |
1397 | |
1445 | |
1398 | # can't do signal processing without introducing races in pure perl, |
1446 | *AnyEvent::Base::signal::DESTROY = sub { |
1399 | # so limit the signal latency. |
1447 | my ($signal, $cb) = @{$_[0]}; |
|
|
1448 | |
1400 | _sig_add; |
1449 | _sig_del; |
1401 | } |
|
|
1402 | |
1450 | |
1403 | bless [$signal, $arg{cb}], "AnyEvent::Base::signal" |
1451 | delete $SIG_CB{$signal}{$cb}; |
1404 | } |
|
|
1405 | |
1452 | |
1406 | sub signal { |
1453 | $HAVE_ASYNC_INTERRUPT |
1407 | # probe for availability of Async::Interrupt |
1454 | ? delete $SIG_ASY{$signal} |
1408 | if (_have_async_interrupt) { |
1455 | : # delete doesn't work with older perls - they then |
1409 | warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8; |
1456 | # print weird messages, or just unconditionally exit |
1410 | |
1457 | # instead of getting the default action. |
1411 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1458 | undef $SIG{$signal} |
1412 | $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R->fileno, poll => "r", cb => \&_signal_exec); |
1459 | unless keys %{ $SIG_CB{$signal} }; |
1413 | |
|
|
1414 | } else { |
|
|
1415 | warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; |
|
|
1416 | |
|
|
1417 | require Fcntl; |
|
|
1418 | |
|
|
1419 | if (AnyEvent::WIN32) { |
|
|
1420 | require AnyEvent::Util; |
|
|
1421 | |
|
|
1422 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
|
|
1423 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_R) if $SIGPIPE_R; |
|
|
1424 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_W) if $SIGPIPE_W; # just in case |
|
|
1425 | } else { |
|
|
1426 | pipe $SIGPIPE_R, $SIGPIPE_W; |
|
|
1427 | fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R; |
|
|
1428 | fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case |
|
|
1429 | |
|
|
1430 | # not strictly required, as $^F is normally 2, but let's make sure... |
|
|
1431 | fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
|
|
1432 | fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
|
|
1433 | } |
1460 | }; |
1434 | |
|
|
1435 | $SIGPIPE_R |
|
|
1436 | or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n"; |
|
|
1437 | |
|
|
1438 | $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R, poll => "r", cb => \&_signal_exec); |
|
|
1439 | } |
1461 | }; |
1440 | |
1462 | die if $@; |
1441 | *signal = \&_signal; |
|
|
1442 | &signal |
1463 | &signal |
1443 | } |
|
|
1444 | |
|
|
1445 | sub AnyEvent::Base::signal::DESTROY { |
|
|
1446 | my ($signal, $cb) = @{$_[0]}; |
|
|
1447 | |
|
|
1448 | _sig_del; |
|
|
1449 | |
|
|
1450 | delete $SIG_CB{$signal}{$cb}; |
|
|
1451 | |
|
|
1452 | $HAVE_ASYNC_INTERRUPT |
|
|
1453 | ? delete $SIG_ASY{$signal} |
|
|
1454 | : # delete doesn't work with older perls - they then |
|
|
1455 | # print weird messages, or just unconditionally exit |
|
|
1456 | # instead of getting the default action. |
|
|
1457 | undef $SIG{$signal} |
|
|
1458 | unless keys %{ $SIG_CB{$signal} }; |
|
|
1459 | } |
1464 | } |
1460 | |
1465 | |
1461 | # default implementation for ->child |
1466 | # default implementation for ->child |
1462 | |
1467 | |
1463 | our %PID_CB; |
1468 | our %PID_CB; |