… | |
… | |
7 | |
7 | |
8 | =head1 SYNOPSIS |
8 | =head1 SYNOPSIS |
9 | |
9 | |
10 | use AnyEvent; |
10 | use AnyEvent; |
11 | |
11 | |
|
|
12 | # if you prefer function calls, look at the L<AE> manpage for |
|
|
13 | # an alternative API. |
|
|
14 | |
12 | # file descriptor readable |
15 | # file handle or descriptor readable |
13 | my $w = AnyEvent->io (fh => $fh, poll => "r", cb => sub { ... }); |
16 | my $w = AnyEvent->io (fh => $fh, poll => "r", cb => sub { ... }); |
14 | |
17 | |
15 | # one-shot or repeating timers |
18 | # one-shot or repeating timers |
16 | my $w = AnyEvent->timer (after => $seconds, cb => sub { ... }); |
19 | my $w = AnyEvent->timer (after => $seconds, cb => sub { ... }); |
17 | my $w = AnyEvent->timer (after => $seconds, interval => $seconds, cb => ... |
20 | my $w = AnyEvent->timer (after => $seconds, interval => $seconds, cb => ... |
… | |
… | |
606 | eventually calls C<< -> send >>, and the "consumer side", which waits |
609 | eventually calls C<< -> send >>, and the "consumer side", which waits |
607 | for the send to occur. |
610 | for the send to occur. |
608 | |
611 | |
609 | Example: wait for a timer. |
612 | Example: wait for a timer. |
610 | |
613 | |
611 | # wait till the result is ready |
614 | # condition: "wait till the timer is fired" |
612 | my $result_ready = AnyEvent->condvar; |
615 | my $timer_fired = AnyEvent->condvar; |
613 | |
616 | |
614 | # do something such as adding a timer |
617 | # create the timer - we could wait for, say |
615 | # or socket watcher the calls $result_ready->send |
618 | # a handle becomign ready, or even an |
616 | # when the "result" is ready. |
619 | # AnyEvent::HTTP request to finish, but |
617 | # in this case, we simply use a timer: |
620 | # in this case, we simply use a timer: |
618 | my $w = AnyEvent->timer ( |
621 | my $w = AnyEvent->timer ( |
619 | after => 1, |
622 | after => 1, |
620 | cb => sub { $result_ready->send }, |
623 | cb => sub { $timer_fired->send }, |
621 | ); |
624 | ); |
622 | |
625 | |
623 | # this "blocks" (while handling events) till the callback |
626 | # this "blocks" (while handling events) till the callback |
624 | # calls ->send |
627 | # calls ->send |
625 | $result_ready->recv; |
628 | $timer_fired->recv; |
626 | |
629 | |
627 | Example: wait for a timer, but take advantage of the fact that condition |
630 | Example: wait for a timer, but take advantage of the fact that condition |
628 | variables are also callable directly. |
631 | variables are also callable directly. |
629 | |
632 | |
630 | my $done = AnyEvent->condvar; |
633 | my $done = AnyEvent->condvar; |
… | |
… | |
1156 | |
1159 | |
1157 | BEGIN { AnyEvent::common_sense } |
1160 | BEGIN { AnyEvent::common_sense } |
1158 | |
1161 | |
1159 | use Carp (); |
1162 | use Carp (); |
1160 | |
1163 | |
1161 | our $VERSION = '5.23'; |
1164 | our $VERSION = '5.26'; |
1162 | our $MODEL; |
1165 | our $MODEL; |
1163 | |
1166 | |
1164 | our $AUTOLOAD; |
1167 | our $AUTOLOAD; |
1165 | our @ISA; |
1168 | our @ISA; |
1166 | |
1169 | |
1167 | our @REGISTRY; |
1170 | our @REGISTRY; |
1168 | |
1171 | |
1169 | our $VERBOSE; |
1172 | our $VERBOSE; |
1170 | |
1173 | |
1171 | BEGIN { |
1174 | BEGIN { |
1172 | eval "sub WIN32(){ " . (($^O =~ /mswin32/i)*1) ." }"; |
1175 | require "AnyEvent/constants.pl"; |
|
|
1176 | |
1173 | eval "sub TAINT(){ " . (${^TAINT}*1) . " }"; |
1177 | eval "sub TAINT (){" . (${^TAINT}*1) . "}"; |
1174 | |
1178 | |
1175 | delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} |
1179 | delete @ENV{grep /^PERL_ANYEVENT_/, keys %ENV} |
1176 | if ${^TAINT}; |
1180 | if ${^TAINT}; |
1177 | |
1181 | |
1178 | $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1; |
1182 | $VERBOSE = $ENV{PERL_ANYEVENT_VERBOSE}*1; |
… | |
… | |
1221 | our @post_detect; |
1225 | our @post_detect; |
1222 | |
1226 | |
1223 | sub post_detect(&) { |
1227 | sub post_detect(&) { |
1224 | my ($cb) = @_; |
1228 | my ($cb) = @_; |
1225 | |
1229 | |
1226 | if ($MODEL) { |
|
|
1227 | $cb->(); |
|
|
1228 | |
|
|
1229 | undef |
|
|
1230 | } else { |
|
|
1231 | push @post_detect, $cb; |
1230 | push @post_detect, $cb; |
1232 | |
1231 | |
1233 | defined wantarray |
1232 | defined wantarray |
1234 | ? bless \$cb, "AnyEvent::Util::postdetect" |
1233 | ? bless \$cb, "AnyEvent::Util::postdetect" |
1235 | : () |
1234 | : () |
1236 | } |
|
|
1237 | } |
1235 | } |
1238 | |
1236 | |
1239 | sub AnyEvent::Util::postdetect::DESTROY { |
1237 | sub AnyEvent::Util::postdetect::DESTROY { |
1240 | @post_detect = grep $_ != ${$_[0]}, @post_detect; |
1238 | @post_detect = grep $_ != ${$_[0]}, @post_detect; |
1241 | } |
1239 | } |
1242 | |
1240 | |
1243 | sub detect() { |
1241 | sub detect() { |
|
|
1242 | # free some memory |
|
|
1243 | *detect = sub () { $MODEL }; |
|
|
1244 | |
|
|
1245 | local $!; # for good measure |
|
|
1246 | local $SIG{__DIE__}; |
|
|
1247 | |
|
|
1248 | if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) { |
|
|
1249 | my $model = "AnyEvent::Impl::$1"; |
|
|
1250 | if (eval "require $model") { |
|
|
1251 | $MODEL = $model; |
|
|
1252 | warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2; |
|
|
1253 | } else { |
|
|
1254 | warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE; |
|
|
1255 | } |
|
|
1256 | } |
|
|
1257 | |
|
|
1258 | # check for already loaded models |
1244 | unless ($MODEL) { |
1259 | unless ($MODEL) { |
1245 | local $SIG{__DIE__}; |
1260 | for (@REGISTRY, @models) { |
1246 | |
1261 | my ($package, $model) = @$_; |
1247 | if ($ENV{PERL_ANYEVENT_MODEL} =~ /^([a-zA-Z]+)$/) { |
1262 | if (${"$package\::VERSION"} > 0) { |
1248 | my $model = "AnyEvent::Impl::$1"; |
|
|
1249 | if (eval "require $model") { |
1263 | if (eval "require $model") { |
1250 | $MODEL = $model; |
1264 | $MODEL = $model; |
1251 | warn "AnyEvent: loaded model '$model' (forced by \$ENV{PERL_ANYEVENT_MODEL}), using it.\n" if $VERBOSE >= 2; |
1265 | warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2; |
1252 | } else { |
1266 | last; |
1253 | warn "AnyEvent: unable to load model '$model' (from \$ENV{PERL_ANYEVENT_MODEL}):\n$@" if $VERBOSE; |
1267 | } |
1254 | } |
1268 | } |
1255 | } |
1269 | } |
1256 | |
1270 | |
1257 | # check for already loaded models |
|
|
1258 | unless ($MODEL) { |
1271 | unless ($MODEL) { |
|
|
1272 | # try to autoload a model |
1259 | for (@REGISTRY, @models) { |
1273 | for (@REGISTRY, @models) { |
1260 | my ($package, $model) = @$_; |
1274 | my ($package, $model, $autoload) = @$_; |
|
|
1275 | if ( |
|
|
1276 | $autoload |
|
|
1277 | and eval "require $package" |
1261 | if (${"$package\::VERSION"} > 0) { |
1278 | and ${"$package\::VERSION"} > 0 |
1262 | if (eval "require $model") { |
1279 | and eval "require $model" |
|
|
1280 | ) { |
1263 | $MODEL = $model; |
1281 | $MODEL = $model; |
1264 | warn "AnyEvent: autodetected model '$model', using it.\n" if $VERBOSE >= 2; |
1282 | warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2; |
1265 | last; |
1283 | last; |
1266 | } |
|
|
1267 | } |
1284 | } |
1268 | } |
1285 | } |
1269 | |
1286 | |
1270 | unless ($MODEL) { |
|
|
1271 | # try to autoload a model |
|
|
1272 | for (@REGISTRY, @models) { |
|
|
1273 | my ($package, $model, $autoload) = @$_; |
|
|
1274 | if ( |
|
|
1275 | $autoload |
|
|
1276 | and eval "require $package" |
|
|
1277 | and ${"$package\::VERSION"} > 0 |
|
|
1278 | and eval "require $model" |
|
|
1279 | ) { |
|
|
1280 | $MODEL = $model; |
|
|
1281 | warn "AnyEvent: autoloaded model '$model', using it.\n" if $VERBOSE >= 2; |
|
|
1282 | last; |
|
|
1283 | } |
|
|
1284 | } |
|
|
1285 | |
|
|
1286 | $MODEL |
1287 | $MODEL |
1287 | or die "No event module selected for AnyEvent and autodetect failed. Install any one of these modules: EV, Event or Glib.\n"; |
1288 | or die "No event module selected for AnyEvent and autodetect failed. Install any one of these modules: EV, Event or Glib.\n"; |
1288 | } |
|
|
1289 | } |
1289 | } |
1290 | |
|
|
1291 | push @{"$MODEL\::ISA"}, "AnyEvent::Base"; |
|
|
1292 | |
|
|
1293 | unshift @ISA, $MODEL; |
|
|
1294 | |
|
|
1295 | require AnyEvent::Strict if $ENV{PERL_ANYEVENT_STRICT}; |
|
|
1296 | |
|
|
1297 | (shift @post_detect)->() while @post_detect; |
|
|
1298 | } |
1290 | } |
|
|
1291 | |
|
|
1292 | @models = (); # free probe data |
|
|
1293 | |
|
|
1294 | push @{"$MODEL\::ISA"}, "AnyEvent::Base"; |
|
|
1295 | unshift @ISA, $MODEL; |
|
|
1296 | |
|
|
1297 | # now nuke some methods that are overriden by the backend. |
|
|
1298 | # SUPER is not allowed. |
|
|
1299 | for (qw(time signal child idle)) { |
|
|
1300 | undef &{"AnyEvent::Base::$_"} |
|
|
1301 | if defined &{"$MODEL\::$_"}; |
|
|
1302 | } |
|
|
1303 | |
|
|
1304 | require AnyEvent::Strict if $ENV{PERL_ANYEVENT_STRICT}; |
|
|
1305 | |
|
|
1306 | (shift @post_detect)->() while @post_detect; |
|
|
1307 | |
|
|
1308 | *post_detect = sub(&) { |
|
|
1309 | shift->(); |
|
|
1310 | |
|
|
1311 | undef |
|
|
1312 | }; |
1299 | |
1313 | |
1300 | $MODEL |
1314 | $MODEL |
1301 | } |
1315 | } |
1302 | |
1316 | |
1303 | sub AUTOLOAD { |
1317 | sub AUTOLOAD { |
1304 | (my $func = $AUTOLOAD) =~ s/.*://; |
1318 | (my $func = $AUTOLOAD) =~ s/.*://; |
1305 | |
1319 | |
1306 | $method{$func} |
1320 | $method{$func} |
1307 | or Carp::croak "$func: not a valid method for AnyEvent objects"; |
1321 | or Carp::croak "$func: not a valid AnyEvent class method"; |
1308 | |
1322 | |
1309 | detect unless $MODEL; |
1323 | detect; |
1310 | |
1324 | |
1311 | my $class = shift; |
1325 | my $class = shift; |
1312 | $class->$func (@_); |
1326 | $class->$func (@_); |
1313 | } |
1327 | } |
1314 | |
1328 | |
… | |
… | |
1331 | |
1345 | |
1332 | =head1 SIMPLIFIED AE API |
1346 | =head1 SIMPLIFIED AE API |
1333 | |
1347 | |
1334 | Starting with version 5.0, AnyEvent officially supports a second, much |
1348 | Starting with version 5.0, AnyEvent officially supports a second, much |
1335 | simpler, API that is designed to reduce the calling, typing and memory |
1349 | simpler, API that is designed to reduce the calling, typing and memory |
1336 | overhead. |
1350 | overhead by using function call syntax and a fixed number of parameters. |
1337 | |
1351 | |
1338 | See the L<AE> manpage for details. |
1352 | See the L<AE> manpage for details. |
1339 | |
1353 | |
1340 | =cut |
1354 | =cut |
1341 | |
1355 | |
1342 | package AE; |
1356 | package AE; |
1343 | |
1357 | |
1344 | our $VERSION = $AnyEvent::VERSION; |
1358 | our $VERSION = $AnyEvent::VERSION; |
|
|
1359 | |
|
|
1360 | # fall back to the main API by default - backends and AnyEvent::Base |
|
|
1361 | # implementations can overwrite these. |
1345 | |
1362 | |
1346 | sub io($$$) { |
1363 | sub io($$$) { |
1347 | AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) |
1364 | AnyEvent->io (fh => $_[0], poll => $_[1] ? "w" : "r", cb => $_[2]) |
1348 | } |
1365 | } |
1349 | |
1366 | |
… | |
… | |
1381 | |
1398 | |
1382 | package AnyEvent::Base; |
1399 | package AnyEvent::Base; |
1383 | |
1400 | |
1384 | # default implementations for many methods |
1401 | # default implementations for many methods |
1385 | |
1402 | |
1386 | sub _time() { |
1403 | sub time { |
|
|
1404 | eval q{ # poor man's autoloading {} |
1387 | # probe for availability of Time::HiRes |
1405 | # probe for availability of Time::HiRes |
1388 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1406 | if (eval "use Time::HiRes (); Time::HiRes::time (); 1") { |
1389 | warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8; |
1407 | warn "AnyEvent: using Time::HiRes for sub-second timing accuracy.\n" if $VERBOSE >= 8; |
1390 | *_time = \&Time::HiRes::time; |
1408 | *AE::time = \&Time::HiRes::time; |
1391 | # if (eval "use POSIX (); (POSIX::times())... |
1409 | # if (eval "use POSIX (); (POSIX::times())... |
1392 | } else { |
1410 | } else { |
1393 | warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE; |
1411 | warn "AnyEvent: using built-in time(), WARNING, no sub-second resolution!\n" if $VERBOSE; |
1394 | *_time = sub { time }; # epic fail |
1412 | *AE::time = sub (){ time }; # epic fail |
|
|
1413 | } |
|
|
1414 | |
|
|
1415 | *time = sub { AE::time }; # different prototypes |
1395 | } |
1416 | }; |
|
|
1417 | die if $@; |
1396 | |
1418 | |
1397 | &_time |
1419 | &time |
1398 | } |
1420 | } |
1399 | |
1421 | |
1400 | sub time { _time } |
1422 | *now = \&time; |
1401 | sub now { _time } |
1423 | |
1402 | sub now_update { } |
1424 | sub now_update { } |
1403 | |
1425 | |
1404 | # default implementation for ->condvar |
1426 | # default implementation for ->condvar |
1405 | |
1427 | |
1406 | sub condvar { |
1428 | sub condvar { |
|
|
1429 | eval q{ # poor man's autoloading {} |
|
|
1430 | *condvar = sub { |
1407 | bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar" |
1431 | bless { @_ == 3 ? (_ae_cb => $_[2]) : () }, "AnyEvent::CondVar" |
|
|
1432 | }; |
|
|
1433 | |
|
|
1434 | *AE::cv = sub (;&) { |
|
|
1435 | bless { @_ ? (_ae_cb => shift) : () }, "AnyEvent::CondVar" |
|
|
1436 | }; |
|
|
1437 | }; |
|
|
1438 | die if $@; |
|
|
1439 | |
|
|
1440 | &condvar |
1408 | } |
1441 | } |
1409 | |
1442 | |
1410 | # default implementation for ->signal |
1443 | # default implementation for ->signal |
1411 | |
1444 | |
1412 | our $HAVE_ASYNC_INTERRUPT; |
1445 | our $HAVE_ASYNC_INTERRUPT; |
… | |
… | |
1421 | |
1454 | |
1422 | our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO); |
1455 | our ($SIGPIPE_R, $SIGPIPE_W, %SIG_CB, %SIG_EV, $SIG_IO); |
1423 | our (%SIG_ASY, %SIG_ASY_W); |
1456 | our (%SIG_ASY, %SIG_ASY_W); |
1424 | our ($SIG_COUNT, $SIG_TW); |
1457 | our ($SIG_COUNT, $SIG_TW); |
1425 | |
1458 | |
1426 | sub _signal_exec { |
|
|
1427 | $HAVE_ASYNC_INTERRUPT |
|
|
1428 | ? $SIGPIPE_R->drain |
|
|
1429 | : sysread $SIGPIPE_R, (my $dummy), 9; |
|
|
1430 | |
|
|
1431 | while (%SIG_EV) { |
|
|
1432 | for (keys %SIG_EV) { |
|
|
1433 | delete $SIG_EV{$_}; |
|
|
1434 | $_->() for values %{ $SIG_CB{$_} || {} }; |
|
|
1435 | } |
|
|
1436 | } |
|
|
1437 | } |
|
|
1438 | |
|
|
1439 | # install a dummy wakeup watcher to reduce signal catching latency |
1459 | # install a dummy wakeup watcher to reduce signal catching latency |
|
|
1460 | # used by Impls |
1440 | sub _sig_add() { |
1461 | sub _sig_add() { |
1441 | unless ($SIG_COUNT++) { |
1462 | unless ($SIG_COUNT++) { |
1442 | # try to align timer on a full-second boundary, if possible |
1463 | # try to align timer on a full-second boundary, if possible |
1443 | my $NOW = AE::now; |
1464 | my $NOW = AE::now; |
1444 | |
1465 | |
… | |
… | |
1454 | undef $SIG_TW |
1475 | undef $SIG_TW |
1455 | unless --$SIG_COUNT; |
1476 | unless --$SIG_COUNT; |
1456 | } |
1477 | } |
1457 | |
1478 | |
1458 | our $_sig_name_init; $_sig_name_init = sub { |
1479 | our $_sig_name_init; $_sig_name_init = sub { |
1459 | eval q{ # poor man's autoloading |
1480 | eval q{ # poor man's autoloading {} |
1460 | undef $_sig_name_init; |
1481 | undef $_sig_name_init; |
1461 | |
1482 | |
1462 | if (_have_async_interrupt) { |
1483 | if (_have_async_interrupt) { |
1463 | *sig2num = \&Async::Interrupt::sig2num; |
1484 | *sig2num = \&Async::Interrupt::sig2num; |
1464 | *sig2name = \&Async::Interrupt::sig2name; |
1485 | *sig2name = \&Async::Interrupt::sig2name; |
… | |
… | |
1496 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
1517 | $SIG_IO = AE::io $SIGPIPE_R->fileno, 0, \&_signal_exec; |
1497 | |
1518 | |
1498 | } else { |
1519 | } else { |
1499 | warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; |
1520 | warn "AnyEvent: using emulated perl signal handling with latency timer.\n" if $VERBOSE >= 8; |
1500 | |
1521 | |
1501 | require Fcntl; |
|
|
1502 | |
|
|
1503 | if (AnyEvent::WIN32) { |
1522 | if (AnyEvent::WIN32) { |
1504 | require AnyEvent::Util; |
1523 | require AnyEvent::Util; |
1505 | |
1524 | |
1506 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
1525 | ($SIGPIPE_R, $SIGPIPE_W) = AnyEvent::Util::portable_pipe (); |
1507 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_R, 1) if $SIGPIPE_R; |
1526 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_R, 1) if $SIGPIPE_R; |
1508 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_W, 1) if $SIGPIPE_W; # just in case |
1527 | AnyEvent::Util::fh_nonblocking ($SIGPIPE_W, 1) if $SIGPIPE_W; # just in case |
1509 | } else { |
1528 | } else { |
1510 | pipe $SIGPIPE_R, $SIGPIPE_W; |
1529 | pipe $SIGPIPE_R, $SIGPIPE_W; |
1511 | fcntl $SIGPIPE_R, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_R; |
1530 | fcntl $SIGPIPE_R, AnyEvent::F_SETFL, AnyEvent::O_NONBLOCK if $SIGPIPE_R; |
1512 | fcntl $SIGPIPE_W, &Fcntl::F_SETFL, &Fcntl::O_NONBLOCK if $SIGPIPE_W; # just in case |
1531 | fcntl $SIGPIPE_W, AnyEvent::F_SETFL, AnyEvent::O_NONBLOCK if $SIGPIPE_W; # just in case |
1513 | |
1532 | |
1514 | # not strictly required, as $^F is normally 2, but let's make sure... |
1533 | # not strictly required, as $^F is normally 2, but let's make sure... |
1515 | fcntl $SIGPIPE_R, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
1534 | fcntl $SIGPIPE_R, AnyEvent::F_SETFD, AnyEvent::FD_CLOEXEC; |
1516 | fcntl $SIGPIPE_W, &Fcntl::F_SETFD, &Fcntl::FD_CLOEXEC; |
1535 | fcntl $SIGPIPE_W, AnyEvent::F_SETFD, AnyEvent::FD_CLOEXEC; |
1517 | } |
1536 | } |
1518 | |
1537 | |
1519 | $SIGPIPE_R |
1538 | $SIGPIPE_R |
1520 | or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n"; |
1539 | or Carp::croak "AnyEvent: unable to create a signal reporting pipe: $!\n"; |
1521 | |
1540 | |
1522 | $SIG_IO = AE::io $SIGPIPE_R, 0, \&_signal_exec; |
1541 | $SIG_IO = AE::io $SIGPIPE_R, 0, \&_signal_exec; |
1523 | } |
1542 | } |
1524 | |
1543 | |
1525 | *signal = sub { |
1544 | *signal = $HAVE_ASYNC_INTERRUPT |
|
|
1545 | ? sub { |
1526 | my (undef, %arg) = @_; |
1546 | my (undef, %arg) = @_; |
1527 | |
1547 | |
1528 | my $signal = uc $arg{signal} |
|
|
1529 | or Carp::croak "required option 'signal' is missing"; |
|
|
1530 | |
|
|
1531 | if ($HAVE_ASYNC_INTERRUPT) { |
|
|
1532 | # async::interrupt |
1548 | # async::interrupt |
1533 | |
|
|
1534 | $signal = sig2num $signal; |
1549 | my $signal = sig2num $arg{signal}; |
1535 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1550 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1536 | |
1551 | |
1537 | $SIG_ASY{$signal} ||= new Async::Interrupt |
1552 | $SIG_ASY{$signal} ||= new Async::Interrupt |
1538 | cb => sub { undef $SIG_EV{$signal} }, |
1553 | cb => sub { undef $SIG_EV{$signal} }, |
1539 | signal => $signal, |
1554 | signal => $signal, |
1540 | pipe => [$SIGPIPE_R->filenos], |
1555 | pipe => [$SIGPIPE_R->filenos], |
1541 | pipe_autodrain => 0, |
1556 | pipe_autodrain => 0, |
1542 | ; |
1557 | ; |
1543 | |
1558 | |
1544 | } else { |
1559 | bless [$signal, $arg{cb}], "AnyEvent::Base::signal" |
|
|
1560 | } |
|
|
1561 | : sub { |
|
|
1562 | my (undef, %arg) = @_; |
|
|
1563 | |
1545 | # pure perl |
1564 | # pure perl |
1546 | |
|
|
1547 | # AE::Util has been loaded in signal |
|
|
1548 | $signal = sig2name $signal; |
1565 | my $signal = sig2name $arg{signal}; |
1549 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1566 | $SIG_CB{$signal}{$arg{cb}} = $arg{cb}; |
1550 | |
1567 | |
1551 | $SIG{$signal} ||= sub { |
1568 | $SIG{$signal} ||= sub { |
1552 | local $!; |
1569 | local $!; |
1553 | syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV; |
1570 | syswrite $SIGPIPE_W, "\x00", 1 unless %SIG_EV; |
1554 | undef $SIG_EV{$signal}; |
1571 | undef $SIG_EV{$signal}; |
1555 | }; |
1572 | }; |
1556 | |
1573 | |
1557 | # can't do signal processing without introducing races in pure perl, |
1574 | # can't do signal processing without introducing races in pure perl, |
1558 | # so limit the signal latency. |
1575 | # so limit the signal latency. |
1559 | _sig_add; |
1576 | _sig_add; |
1560 | } |
|
|
1561 | |
1577 | |
1562 | bless [$signal, $arg{cb}], "AnyEvent::Base::signal" |
1578 | bless [$signal, $arg{cb}], "AnyEvent::Base::signal" |
|
|
1579 | } |
1563 | }; |
1580 | ; |
1564 | |
1581 | |
1565 | *AnyEvent::Base::signal::DESTROY = sub { |
1582 | *AnyEvent::Base::signal::DESTROY = sub { |
1566 | my ($signal, $cb) = @{$_[0]}; |
1583 | my ($signal, $cb) = @{$_[0]}; |
1567 | |
1584 | |
1568 | _sig_del; |
1585 | _sig_del; |
… | |
… | |
1575 | # print weird messages, or just unconditionally exit |
1592 | # print weird messages, or just unconditionally exit |
1576 | # instead of getting the default action. |
1593 | # instead of getting the default action. |
1577 | undef $SIG{$signal} |
1594 | undef $SIG{$signal} |
1578 | unless keys %{ $SIG_CB{$signal} }; |
1595 | unless keys %{ $SIG_CB{$signal} }; |
1579 | }; |
1596 | }; |
|
|
1597 | |
|
|
1598 | *_signal_exec = sub { |
|
|
1599 | $HAVE_ASYNC_INTERRUPT |
|
|
1600 | ? $SIGPIPE_R->drain |
|
|
1601 | : sysread $SIGPIPE_R, (my $dummy), 9; |
|
|
1602 | |
|
|
1603 | while (%SIG_EV) { |
|
|
1604 | for (keys %SIG_EV) { |
|
|
1605 | delete $SIG_EV{$_}; |
|
|
1606 | $_->() for values %{ $SIG_CB{$_} || {} }; |
|
|
1607 | } |
|
|
1608 | } |
|
|
1609 | }; |
1580 | }; |
1610 | }; |
1581 | die if $@; |
1611 | die if $@; |
|
|
1612 | |
1582 | &signal |
1613 | &signal |
1583 | } |
1614 | } |
1584 | |
1615 | |
1585 | # default implementation for ->child |
1616 | # default implementation for ->child |
1586 | |
1617 | |
1587 | our %PID_CB; |
1618 | our %PID_CB; |
1588 | our $CHLD_W; |
1619 | our $CHLD_W; |
1589 | our $CHLD_DELAY_W; |
1620 | our $CHLD_DELAY_W; |
1590 | our $WNOHANG; |
1621 | our $WNOHANG; |
1591 | |
1622 | |
|
|
1623 | # used by many Impl's |
1592 | sub _emit_childstatus($$) { |
1624 | sub _emit_childstatus($$) { |
1593 | my (undef, $rpid, $rstatus) = @_; |
1625 | my (undef, $rpid, $rstatus) = @_; |
1594 | |
1626 | |
1595 | $_->($rpid, $rstatus) |
1627 | $_->($rpid, $rstatus) |
1596 | for values %{ $PID_CB{$rpid} || {} }, |
1628 | for values %{ $PID_CB{$rpid} || {} }, |
1597 | values %{ $PID_CB{0} || {} }; |
1629 | values %{ $PID_CB{0} || {} }; |
1598 | } |
1630 | } |
1599 | |
1631 | |
1600 | sub _sigchld { |
|
|
1601 | my $pid; |
|
|
1602 | |
|
|
1603 | AnyEvent->_emit_childstatus ($pid, $?) |
|
|
1604 | while ($pid = waitpid -1, $WNOHANG) > 0; |
|
|
1605 | } |
|
|
1606 | |
|
|
1607 | sub child { |
1632 | sub child { |
|
|
1633 | eval q{ # poor man's autoloading {} |
|
|
1634 | *_sigchld = sub { |
|
|
1635 | my $pid; |
|
|
1636 | |
|
|
1637 | AnyEvent->_emit_childstatus ($pid, $?) |
|
|
1638 | while ($pid = waitpid -1, $WNOHANG) > 0; |
|
|
1639 | }; |
|
|
1640 | |
|
|
1641 | *child = sub { |
1608 | my (undef, %arg) = @_; |
1642 | my (undef, %arg) = @_; |
1609 | |
1643 | |
1610 | defined (my $pid = $arg{pid} + 0) |
1644 | defined (my $pid = $arg{pid} + 0) |
1611 | or Carp::croak "required option 'pid' is missing"; |
1645 | or Carp::croak "required option 'pid' is missing"; |
1612 | |
1646 | |
1613 | $PID_CB{$pid}{$arg{cb}} = $arg{cb}; |
1647 | $PID_CB{$pid}{$arg{cb}} = $arg{cb}; |
1614 | |
1648 | |
1615 | # WNOHANG is almost cetrainly 1 everywhere |
1649 | # WNOHANG is almost cetrainly 1 everywhere |
1616 | $WNOHANG ||= $^O =~ /^(?:openbsd|netbsd|linux|freebsd|cygwin|MSWin32)$/ |
1650 | $WNOHANG ||= $^O =~ /^(?:openbsd|netbsd|linux|freebsd|cygwin|MSWin32)$/ |
1617 | ? 1 |
1651 | ? 1 |
1618 | : eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } || 1; |
1652 | : eval { local $SIG{__DIE__}; require POSIX; &POSIX::WNOHANG } || 1; |
1619 | |
1653 | |
1620 | unless ($CHLD_W) { |
1654 | unless ($CHLD_W) { |
1621 | $CHLD_W = AE::signal CHLD => \&_sigchld; |
1655 | $CHLD_W = AE::signal CHLD => \&_sigchld; |
1622 | # child could be a zombie already, so make at least one round |
1656 | # child could be a zombie already, so make at least one round |
1623 | &_sigchld; |
1657 | &_sigchld; |
1624 | } |
1658 | } |
1625 | |
1659 | |
1626 | bless [$pid, $arg{cb}], "AnyEvent::Base::child" |
1660 | bless [$pid, $arg{cb}], "AnyEvent::Base::child" |
1627 | } |
1661 | }; |
1628 | |
1662 | |
1629 | sub AnyEvent::Base::child::DESTROY { |
1663 | *AnyEvent::Base::child::DESTROY = sub { |
1630 | my ($pid, $cb) = @{$_[0]}; |
1664 | my ($pid, $cb) = @{$_[0]}; |
1631 | |
1665 | |
1632 | delete $PID_CB{$pid}{$cb}; |
1666 | delete $PID_CB{$pid}{$cb}; |
1633 | delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} }; |
1667 | delete $PID_CB{$pid} unless keys %{ $PID_CB{$pid} }; |
1634 | |
1668 | |
1635 | undef $CHLD_W unless keys %PID_CB; |
1669 | undef $CHLD_W unless keys %PID_CB; |
|
|
1670 | }; |
|
|
1671 | }; |
|
|
1672 | die if $@; |
|
|
1673 | |
|
|
1674 | &child |
1636 | } |
1675 | } |
1637 | |
1676 | |
1638 | # idle emulation is done by simply using a timer, regardless |
1677 | # idle emulation is done by simply using a timer, regardless |
1639 | # of whether the process is idle or not, and not letting |
1678 | # of whether the process is idle or not, and not letting |
1640 | # the callback use more than 50% of the time. |
1679 | # the callback use more than 50% of the time. |
1641 | sub idle { |
1680 | sub idle { |
|
|
1681 | eval q{ # poor man's autoloading {} |
|
|
1682 | *idle = sub { |
1642 | my (undef, %arg) = @_; |
1683 | my (undef, %arg) = @_; |
1643 | |
1684 | |
1644 | my ($cb, $w, $rcb) = $arg{cb}; |
1685 | my ($cb, $w, $rcb) = $arg{cb}; |
1645 | |
1686 | |
1646 | $rcb = sub { |
1687 | $rcb = sub { |
1647 | if ($cb) { |
1688 | if ($cb) { |
1648 | $w = _time; |
1689 | $w = _time; |
1649 | &$cb; |
1690 | &$cb; |
1650 | $w = _time - $w; |
1691 | $w = _time - $w; |
1651 | |
1692 | |
1652 | # never use more then 50% of the time for the idle watcher, |
1693 | # never use more then 50% of the time for the idle watcher, |
1653 | # within some limits |
1694 | # within some limits |
1654 | $w = 0.0001 if $w < 0.0001; |
1695 | $w = 0.0001 if $w < 0.0001; |
1655 | $w = 5 if $w > 5; |
1696 | $w = 5 if $w > 5; |
1656 | |
1697 | |
1657 | $w = AE::timer $w, 0, $rcb; |
1698 | $w = AE::timer $w, 0, $rcb; |
1658 | } else { |
1699 | } else { |
1659 | # clean up... |
1700 | # clean up... |
1660 | undef $w; |
1701 | undef $w; |
1661 | undef $rcb; |
1702 | undef $rcb; |
|
|
1703 | } |
|
|
1704 | }; |
|
|
1705 | |
|
|
1706 | $w = AE::timer 0.05, 0, $rcb; |
|
|
1707 | |
|
|
1708 | bless \\$cb, "AnyEvent::Base::idle" |
1662 | } |
1709 | }; |
|
|
1710 | |
|
|
1711 | *AnyEvent::Base::idle::DESTROY = sub { |
|
|
1712 | undef $${$_[0]}; |
|
|
1713 | }; |
1663 | }; |
1714 | }; |
|
|
1715 | die if $@; |
1664 | |
1716 | |
1665 | $w = AE::timer 0.05, 0, $rcb; |
1717 | &idle |
1666 | |
|
|
1667 | bless \\$cb, "AnyEvent::Base::idle" |
|
|
1668 | } |
|
|
1669 | |
|
|
1670 | sub AnyEvent::Base::idle::DESTROY { |
|
|
1671 | undef $${$_[0]}; |
|
|
1672 | } |
1718 | } |
1673 | |
1719 | |
1674 | package AnyEvent::CondVar; |
1720 | package AnyEvent::CondVar; |
1675 | |
1721 | |
1676 | our @ISA = AnyEvent::CondVar::Base::; |
1722 | our @ISA = AnyEvent::CondVar::Base::; |
… | |
… | |
2035 | |
2081 | |
2036 | The actual code goes further and collects all errors (C<die>s, exceptions) |
2082 | The actual code goes further and collects all errors (C<die>s, exceptions) |
2037 | that occurred during request processing. The C<result> method detects |
2083 | that occurred during request processing. The C<result> method detects |
2038 | whether an exception as thrown (it is stored inside the $txn object) |
2084 | whether an exception as thrown (it is stored inside the $txn object) |
2039 | and just throws the exception, which means connection errors and other |
2085 | and just throws the exception, which means connection errors and other |
2040 | problems get reported tot he code that tries to use the result, not in a |
2086 | problems get reported to the code that tries to use the result, not in a |
2041 | random callback. |
2087 | random callback. |
2042 | |
2088 | |
2043 | All of this enables the following usage styles: |
2089 | All of this enables the following usage styles: |
2044 | |
2090 | |
2045 | 1. Blocking: |
2091 | 1. Blocking: |
… | |
… | |
2502 | automatic timer adjustments even when no monotonic clock is available, |
2548 | automatic timer adjustments even when no monotonic clock is available, |
2503 | can take avdantage of advanced kernel interfaces such as C<epoll> and |
2549 | can take avdantage of advanced kernel interfaces such as C<epoll> and |
2504 | C<kqueue>, and is the fastest backend I<by far>. You can even embed |
2550 | C<kqueue>, and is the fastest backend I<by far>. You can even embed |
2505 | L<Glib>/L<Gtk2> in it (or vice versa, see L<EV::Glib> and L<Glib::EV>). |
2551 | L<Glib>/L<Gtk2> in it (or vice versa, see L<EV::Glib> and L<Glib::EV>). |
2506 | |
2552 | |
|
|
2553 | If you only use backends that rely on another event loop (e.g. C<Tk>), |
|
|
2554 | then this module will do nothing for you. |
|
|
2555 | |
2507 | =item L<Guard> |
2556 | =item L<Guard> |
2508 | |
2557 | |
2509 | The guard module, when used, will be used to implement |
2558 | The guard module, when used, will be used to implement |
2510 | C<AnyEvent::Util::guard>. This speeds up guards considerably (and uses a |
2559 | C<AnyEvent::Util::guard>. This speeds up guards considerably (and uses a |
2511 | lot less memory), but otherwise doesn't affect guard operation much. It is |
2560 | lot less memory), but otherwise doesn't affect guard operation much. It is |
2512 | purely used for performance. |
2561 | purely used for performance. |
2513 | |
2562 | |
2514 | =item L<JSON> and L<JSON::XS> |
2563 | =item L<JSON> and L<JSON::XS> |
2515 | |
2564 | |
2516 | One of these modules is required when you want to read or write JSON data |
2565 | One of these modules is required when you want to read or write JSON data |
2517 | via L<AnyEvent::Handle>. It is also written in pure-perl, but can take |
2566 | via L<AnyEvent::Handle>. L<JSON> is also written in pure-perl, but can take |
2518 | advantage of the ultra-high-speed L<JSON::XS> module when it is installed. |
2567 | advantage of the ultra-high-speed L<JSON::XS> module when it is installed. |
2519 | |
|
|
2520 | In fact, L<AnyEvent::Handle> will use L<JSON::XS> by default if it is |
|
|
2521 | installed. |
|
|
2522 | |
2568 | |
2523 | =item L<Net::SSLeay> |
2569 | =item L<Net::SSLeay> |
2524 | |
2570 | |
2525 | Implementing TLS/SSL in Perl is certainly interesting, but not very |
2571 | Implementing TLS/SSL in Perl is certainly interesting, but not very |
2526 | worthwhile: If this module is installed, then L<AnyEvent::Handle> (with |
2572 | worthwhile: If this module is installed, then L<AnyEvent::Handle> (with |