… | |
… | |
1289 | } |
1289 | } |
1290 | |
1290 | |
1291 | # default implementation for ->signal |
1291 | # default implementation for ->signal |
1292 | |
1292 | |
1293 | our $HAVE_ASYNC_INTERRUPT; |
1293 | our $HAVE_ASYNC_INTERRUPT; |
|
|
1294 | |
|
|
1295 | sub _have_async_interrupt() { |
|
|
1296 | $HAVE_ASYNC_INTERRUPT = 1*(!$ENV{PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT} |
|
|
1297 | && eval "use Async::Interrupt 1.0 (); 1") |
|
|
1298 | unless defined $HAVE_ASYNC_INTERRUPT; |
|
|
1299 | |
|
|
1300 | $HAVE_ASYNC_INTERRUPT |
|
|
1301 | } |
|
|
1302 | |
1294 | our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO); |
1303 | our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO); |
1295 | our (%SIG_ASY, %SIG_ASY_W); |
1304 | our (%SIG_ASY, %SIG_ASY_W); |
1296 | our ($SIG_COUNT, $SIG_TW); |
1305 | our ($SIG_COUNT, $SIG_TW); |
1297 | |
1306 | |
1298 | sub _signal_exec { |
1307 | sub _signal_exec { |
… | |
… | |
1325 | sub _sig_del { |
1334 | sub _sig_del { |
1326 | undef $SIG_TW |
1335 | undef $SIG_TW |
1327 | unless --$SIG_COUNT; |
1336 | unless --$SIG_COUNT; |
1328 | } |
1337 | } |
1329 | |
1338 | |
|
|
1339 | our $_sig_name_init; $_sig_name_init = sub { |
|
|
1340 | eval q{ # poor man's autoloading |
|
|
1341 | undef $_sig_name_init; |
|
|
1342 | |
|
|
1343 | if (_have_async_interrupt) { |
|
|
1344 | *sig2num = \&Async::Interrupt::sig2num; |
|
|
1345 | *sig2name = \&Async::Interrupt::sig2name; |
|
|
1346 | } else { |
|
|
1347 | require Config; |
|
|
1348 | |
|
|
1349 | my %signame2num; |
|
|
1350 | @signame2num{ split ' ', $Config::Config{sig_name} } |
|
|
1351 | = split ' ', $Config::Config{sig_num}; |
|
|
1352 | |
|
|
1353 | my @signum2name; |
|
|
1354 | @signum2name[values %signame2num] = keys %signame2num; |
|
|
1355 | |
|
|
1356 | *sig2num = sub($) { |
|
|
1357 | $_[0] > 0 ? shift : $signame2num{+shift} |
|
|
1358 | }; |
|
|
1359 | *sig2name = sub ($) { |
|
|
1360 | $_[0] > 0 ? $signum2name[+shift] : shift |
|
|
1361 | }; |
|
|
1362 | } |
|
|
1363 | }; |
|
|
1364 | die if $@; |
|
|
1365 | }; |
|
|
1366 | |
|
|
1367 | sub sig2num ($) { &$_sig_name_init; &sig2num } |
|
|
1368 | sub sig2name($) { &$_sig_name_init; &sig2name } |
|
|
1369 | |
1330 | 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 { |
1331 | my (undef, %arg) = @_; |
1407 | my (undef, %arg) = @_; |
1332 | |
1408 | |
1333 | my $signal = uc $arg{signal} |
1409 | my $signal = uc $arg{signal} |
1334 | or Carp::croak "required option 'signal' is missing"; |
1410 | or Carp::croak "required option 'signal' is missing"; |
1335 | |
1411 | |
1336 | if ($HAVE_ASYNC_INTERRUPT) { |
1412 | if ($HAVE_ASYNC_INTERRUPT) { |
1337 | # async::interrupt |
1413 | # async::interrupt |
1338 | |
1414 | |
1339 | $signal = Async::Interrupt::sig2num ($signal); |
1415 | $signal = sig2num $signal; |
1340 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1416 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1341 | |
1417 | |
1342 | $SIG_ASY{$signal} ||= new Async::Interrupt |
1418 | $SIG_ASY{$signal} ||= new Async::Interrupt |
1343 | cb => sub { undef $SIG_EV{$signal} }, |
1419 | cb => sub { undef $SIG_EV{$signal} }, |
1344 | signal => $signal, |
1420 | signal => $signal, |
1345 | pipe => [$SIGPIPE_R->filenos], |
1421 | pipe => [$SIGPIPE_R->filenos], |
1346 | pipe_autodrain => 0, |
1422 | pipe_autodrain => 0, |
1347 | ; |
1423 | ; |
1348 | |
1424 | |
1349 | } else { |
1425 | } else { |
1350 | # pure perl |
1426 | # pure perl |
1351 | |
1427 | |
1352 | # AE::Util has been loaded in signal |
1428 | # AE::Util has been loaded in signal |
1353 | $signal = AnyEvent::Util::sig2name ($signal); |
1429 | $signal = sig2name $signal; |
1354 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1430 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1355 | |
1431 | |
1356 | $SIG{$signal} ||= sub { |
1432 | $SIG{$signal} ||= sub { |
1357 | local $!; |
1433 | local $!; |
1358 | syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV; |
1434 | syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV; |
1359 | 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, $arg{cb}], "AnyEvent::Base::signal" |
1360 | }; |
1444 | }; |
1361 | |
1445 | |
1362 | # can't do signal processing without introducing races in pure perl, |
1446 | *AnyEvent::Base::signal::DESTROY = sub { |
1363 | # so limit the signal latency. |
1447 | my ($signal, $cb) = @{$_[0]}; |
|
|
1448 | |
1364 | _sig_add; |
1449 | _sig_del; |
1365 | } |
|
|
1366 | |
1450 | |
1367 | bless [$signal, $arg{cb}], "AnyEvent::Base::signal" |
1451 | delete $SIG_CB{$signal}{$cb}; |
1368 | } |
|
|
1369 | |
1452 | |
1370 | sub signal { |
|
|
1371 | # probe for availability of Async::Interrupt |
|
|
1372 | if (!$ENV{PERL_ANYEVENT_AVOID_ASYNC_INTERRUPT} && eval "use Async::Interrupt 1.0 (); 1") { |
|
|
1373 | warn "AnyEvent: using Async::Interrupt for race-free signal handling.\n" if $VERBOSE >= 8; |
|
|
1374 | |
|
|
1375 | $HAVE_ASYNC_INTERRUPT = 1; |
1453 | $HAVE_ASYNC_INTERRUPT |
1376 | $SIGPIPE_R = new Async::Interrupt::EventPipe; |
1454 | ? delete $SIG_ASY{$signal} |
1377 | $SIG_IO = AnyEvent->io (fh => $SIGPIPE_R->fileno, poll => "r", cb => \&_signal_exec); |
1455 | : # delete doesn't work with older perls - they then |
1378 | |
1456 | # print weird messages, or just unconditionally exit |
1379 | } else { |
1457 | # instead of getting the default action. |
1380 | warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; |
1458 | undef $SIG{$signal} |
1381 | |
1459 | unless keys %{ $SIG_CB{$signal} }; |
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) if $SIGPIPE_R; |
|
|
1389 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_W) 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 | } |
1460 | }; |
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 | } |
1461 | }; |
1405 | |
1462 | die if $@; |
1406 | *signal = \&_signal; |
|
|
1407 | &signal |
1463 | &signal |
1408 | } |
|
|
1409 | |
|
|
1410 | sub AnyEvent::Base::signal::DESTROY { |
|
|
1411 | my ($signal, $cb) = @{$_[0]}; |
|
|
1412 | |
|
|
1413 | _sig_del; |
|
|
1414 | |
|
|
1415 | delete $SIG_CB{$signal}{$cb}; |
|
|
1416 | |
|
|
1417 | $HAVE_ASYNC_INTERRUPT |
|
|
1418 | ? delete $SIG_ASY{$signal} |
|
|
1419 | : # delete doesn't work with older perls - they then |
|
|
1420 | # print weird messages, or just unconditionally exit |
|
|
1421 | # instead of getting the default action. |
|
|
1422 | undef $SIG{$signal} |
|
|
1423 | unless keys %{ $SIG_CB{$signal} }; |
|
|
1424 | } |
1464 | } |
1425 | |
1465 | |
1426 | # default implementation for ->child |
1466 | # default implementation for ->child |
1427 | |
1467 | |
1428 | our %PID_CB; |
1468 | our %PID_CB; |