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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.172 by root, Sun Jan 14 13:32:48 2007 UTC vs.
Revision 1.186 by root, Sat Jan 20 01:12:39 2007 UTC

… …
8use Storable; 8use Storable;
9use Opcode; 9use Opcode;
10use Safe; 10use Safe;
11use Safe::Hole; 11use Safe::Hole;
12 12
13use Coro 3.3 (); 13use Coro 3.4 ();
14use Coro::Event; 14use Coro::Event;
15use Coro::Timer; 15use Coro::Timer;
16use Coro::Signal; 16use Coro::Signal;
17use Coro::Semaphore; 17use Coro::Semaphore;
18use Coro::AIO; 18use Coro::AIO;
… …
349 my $runtime = cf::localdir . "/runtime"; 349 my $runtime = cf::localdir . "/runtime";
350 350
351 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644 351 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
352 or return; 352 or return;
353 353
354 my $value = $cf::RUNTIME + 90 + 10;
354 my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock 355 # 10 is the runtime save interval, for a monotonic clock
356 # 60 allows for the watchdog to kill the server.
357
355 (aio_write $fh, 0, (length $value), $value, 0) <= 0 358 (aio_write $fh, 0, (length $value), $value, 0) <= 0
356 and return; 359 and return;
357 360
358 aio_fsync $fh 361 aio_fsync $fh
359 and return; 362 and return;
… …
957 960
958sub exists($) { 961sub exists($) {
959 my ($login) = @_; 962 my ($login) = @_;
960 963
961 $cf::PLAYER{$login} 964 $cf::PLAYER{$login}
962 or cf::sync_job { !aio_stat $login } 965 or cf::sync_job { !aio_stat path $login }
963} 966}
964 967
965sub find($) { 968sub find($) {
966 return $cf::PLAYER{$_[0]} || do { 969 return $cf::PLAYER{$_[0]} || do {
967 my $login = $_[0]; 970 my $login = $_[0];
… …
1113 1116
1114use Fcntl; 1117use Fcntl;
1115use Coro::AIO; 1118use Coro::AIO;
1116 1119
1117use overload 1120use overload
1118 '""' => \&as_string; 1121 '""' => \&as_string,
1122 fallback => 1;
1119 1123
1120our $MAX_RESET = 3600; 1124our $MAX_RESET = 3600;
1121our $DEFAULT_RESET = 3000; 1125our $DEFAULT_RESET = 3000;
1122 1126
1123sub generate_random_map { 1127sub generate_random_map {
1124 my ($self, $rmp) = @_; 1128 my ($self, $rmp) = @_;
1125
1126 # mit "rum" bekleckern, nicht 1129 # mit "rum" bekleckern, nicht
1127 $self->_create_random_map ( 1130 $self->_create_random_map (
1128 $rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle}, 1131 $rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
1129 $rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle}, 1132 $rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
1130 $rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map}, 1133 $rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
… …
1339 1342
1340 $map->load_header 1343 $map->load_header
1341 or return; 1344 or return;
1342 1345
1343 if ($map->should_reset) { 1346 if ($map->should_reset) {
1347 # doing this can freeze the server in a sync job, obviously
1344 $cf::WAIT_FOR_TICK->wait; 1348 #$cf::WAIT_FOR_TICK->wait;
1345 $map->reset; 1349 $map->reset;
1346 undef $guard; 1350 undef $guard;
1347 $map = find $path 1351 $map = find $path
1348 or return; 1352 or return;
1349 } 1353 }
… …
1441 1445
1442 cf::sync_job { $map->load }; 1446 cf::sync_job { $map->load };
1443} 1447}
1444 1448
1445our %MAP_PREFETCH; 1449our %MAP_PREFETCH;
1446our $MAP_PREFETCHER = Coro::async { 1450our $MAP_PREFETCHER = undef;
1447 while () {
1448 for my $path (keys %MAP_PREFETCH) {
1449 my $map = find $path
1450 or next;
1451 $map->load;
1452
1453 delete $MAP_PREFETCH{$path};
1454 }
1455 Coro::schedule;
1456 }
1457};
1458 1451
1459sub find_async { 1452sub find_async {
1460 my ($path, $origin) = @_; 1453 my ($path, $origin) = @_;
1461 1454
1462 $path = normalise $path, $origin && $origin->{path}; 1455 $path = normalise $path, $origin && $origin->{path};
1463 1456
1464 if (my $map = $cf::MAP{$path}) { 1457 if (my $map = $cf::MAP{$path}) {
1465 return $map if $map->in_memory == cf::MAP_IN_MEMORY; 1458 return $map if $map->in_memory == cf::MAP_IN_MEMORY;
1466 } 1459 }
1467 1460
1468 $MAP_PREFETCH{$path} = 0; 1461 undef $MAP_PREFETCH{$path};
1469 $MAP_PREFETCHER->ready; 1462 $MAP_PREFETCHER ||= cf::async {
1463 while (%MAP_PREFETCH) {
1464 for my $path (keys %MAP_PREFETCH) {
1465 my $map = find $path
1466 or next;
1467 $map->load;
1468
1469 delete $MAP_PREFETCH{$path};
1470 }
1471 }
1472 undef $MAP_PREFETCHER;
1473 };
1470 1474
1471 () 1475 ()
1472} 1476}
1473 1477
1474sub save { 1478sub save {
… …
1534 my ($self) = @_; 1538 my ($self) = @_;
1535 1539
1536 $self->reset_at <= $cf::RUNTIME 1540 $self->reset_at <= $cf::RUNTIME
1537} 1541}
1538 1542
1539sub rename {
1540 my ($self, $new_path) = @_;
1541
1542 normalise $new_path;
1543
1544 $self->unlink_save;
1545
1546 delete $cf::MAP{$self->path};
1547 $self->{path} = $new_path; $self->path ($self->{path});
1548 $cf::MAP{$self->path} = $self;
1549
1550 $self->save;
1551}
1552
1553sub reset { 1543sub reset {
1554 my ($self) = @_; 1544 my ($self) = @_;
1555 1545
1556 my $lock = cf::lock_acquire "map_data:$self->{path}"; 1546 my $lock = cf::lock_acquire "map_data:$self->{path}";
1557 1547
… …
1574my $nuke_counter = "aaaa"; 1564my $nuke_counter = "aaaa";
1575 1565
1576sub nuke { 1566sub nuke {
1577 my ($self) = @_; 1567 my ($self) = @_;
1578 1568
1569 delete $cf::MAP{$self->path};
1570
1571 $self->unlink_save;
1572
1573 bless $self, "cf::map";
1574 delete $self->{deny_reset};
1579 $self->{deny_save} = 1; 1575 $self->{deny_save} = 1;
1580 $self->reset_timeout (1); 1576 $self->reset_timeout (1);
1581 $self->rename ("{nuke}/" . ($nuke_counter++)); 1577 $self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
1578
1579 $cf::MAP{$self->path} = $self;
1580
1582 $self->reset; # polite request, might not happen 1581 $self->reset; # polite request, might not happen
1583} 1582}
1584 1583
1585=item cf::map::unique_maps 1584=item cf::map::unique_maps
1586 1585
… …
1817 1816
1818sub parse_random_map_params { 1817sub parse_random_map_params {
1819 my ($spec) = @_; 1818 my ($spec) = @_;
1820 1819
1821 my $rmp = { # defaults 1820 my $rmp = { # defaults
1822 xsize => 10, 1821 xsize => (cf::rndm 15, 40),
1823 ysize => 10, 1822 ysize => (cf::rndm 15, 40),
1823 symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
1824 #layout => string,
1824 }; 1825 };
1825 1826
1826 for (split /\n/, $spec) { 1827 for (split /\n/, $spec) {
1827 my ($k, $v) = split /\s+/, $_, 2; 1828 my ($k, $v) = split /\s+/, $_, 2;
1828 1829
… …
1832 $rmp 1833 $rmp
1833} 1834}
1834 1835
1835sub prepare_random_map { 1836sub prepare_random_map {
1836 my ($exit) = @_; 1837 my ($exit) = @_;
1838
1839 my $guard = cf::lock_acquire "exit_prepare:$exit";
1837 1840
1838 # all this does is basically replace the /! path by 1841 # all this does is basically replace the /! path by
1839 # a new random map path (?random/...) with a seed 1842 # a new random map path (?random/...) with a seed
1840 # that depends on the exit object 1843 # that depends on the exit object
1841 1844
… …
1850 1853
1851 $rmp->{random_seed} ||= $exit->random_seed; 1854 $rmp->{random_seed} ||= $exit->random_seed;
1852 1855
1853 my $data = cf::to_json $rmp; 1856 my $data = cf::to_json $rmp;
1854 my $md5 = Digest::MD5::md5_hex $data; 1857 my $md5 = Digest::MD5::md5_hex $data;
1858 my $meta = "$cf::RANDOM_MAPS/$md5.meta";
1855 1859
1856 if (my $fh = aio_open "$cf::RANDOM_MAPS/$md5.meta", O_WRONLY | O_CREAT, 0666) { 1860 if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
1857 aio_write $fh, 0, (length $data), $data, 0; 1861 aio_write $fh, 0, (length $data), $data, 0;
1862 undef $fh;
1863 aio_rename "$meta~", $meta;
1858 1864
1859 $exit->slaying ("?random/$md5"); 1865 $exit->slaying ("?random/$md5");
1860 $exit->msg (undef); 1866 $exit->msg (undef);
1861 } 1867 }
1862} 1868}
… …
2172 sub db_sync() { 2178 sub db_sync() {
2173 db_save if $dirty; 2179 db_save if $dirty;
2174 undef $dirty; 2180 undef $dirty;
2175 } 2181 }
2176 2182
2177 my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub { 2183 my $idle = Event->idle (min => 10, max => 20, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
2178 db_sync; 2184 db_sync;
2179 }); 2185 });
2180 2186
2181 sub db_dirty() { 2187 sub db_dirty() {
2182 $dirty = 1; 2188 $dirty = 1;
… …
2232 2238
2233sub main { 2239sub main {
2234 # we must not ever block the main coroutine 2240 # we must not ever block the main coroutine
2235 local $Coro::idle = sub { 2241 local $Coro::idle = sub {
2236 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d# 2242 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
2243 (async {
2237 async { Event::one_event }; 2244 Event::one_event;
2245 })->prio (Coro::PRIO_MAX);
2238 }; 2246 };
2239 2247
2240 cfg_load; 2248 cfg_load;
2241 db_load; 2249 db_load;
2242 load_extensions; 2250 load_extensions;
2251
2252 $TICK_WATCHER->start;
2243 Event::loop; 2253 Event::loop;
2244} 2254}
2245 2255
2246############################################################################# 2256#############################################################################
2247# initialisation and cleanup 2257# initialisation and cleanup
… …
2289} 2299}
2290 2300
2291sub reload() { 2301sub reload() {
2292 # can/must only be called in main 2302 # can/must only be called in main
2293 if ($Coro::current != $Coro::main) { 2303 if ($Coro::current != $Coro::main) {
2294 warn "can only reload from main coroutine\n"; 2304 warn "can only reload from main coroutine";
2295 return; 2305 return;
2296 } 2306 }
2297 2307
2298 warn "reloading..."; 2308 warn "reloading...";
2299 2309
2300 warn "freezing server"; 2310 warn "cancelling server ticker";
2301 my $guard = freeze_mainloop; 2311 $TICK_WATCHER->cancel;
2312
2302 cf::emergency_save; 2313 cf::emergency_save;
2303
2304 warn "sync database to disk";
2305 cf::db_sync;
2306 IO::AIO::flush;
2307 2314
2308 eval { 2315 eval {
2309 # if anything goes wrong in here, we should simply crash as we already saved 2316 # if anything goes wrong in here, we should simply crash as we already saved
2310 2317
2318 warn "syncing database to disk";
2319 cf::db_sync;
2320
2311 warn "cancel all watchers"; 2321 warn "cancelling all WF_AUTOCANCEL watchers";
2312 for (Event::all_watchers) { 2322 for (Event::all_watchers) {
2313 $_->cancel if $_->data & WF_AUTOCANCEL; 2323 $_->cancel if $_->data & WF_AUTOCANCEL;
2314 } 2324 }
2315 2325
2326 warn "flushing outstanding aio requests";
2327 for (;;) {
2328 IO::AIO::flush;
2329 Coro::cede;
2330 last unless IO::AIO::nreqs;
2331 warn "iterate...";
2332 }
2333
2316 warn "cancel all extension coros"; 2334 warn "cancelling all extension coros";
2317 $_->cancel for values %EXT_CORO; 2335 $_->cancel for values %EXT_CORO;
2318 %EXT_CORO = (); 2336 %EXT_CORO = ();
2319 2337
2320 warn "remove commands"; 2338 warn "removing commands";
2321 %COMMAND = (); 2339 %COMMAND = ();
2322 2340
2323 warn "remove ext commands"; 2341 warn "removing ext commands";
2324 %EXTCMD = (); 2342 %EXTCMD = ();
2325 2343
2326 warn "unload/nuke all extensions"; 2344 warn "unloading/nuking all extensions";
2327 for my $pkg (@EXTS) { 2345 for my $pkg (@EXTS) {
2328 warn "... unloading $pkg"; 2346 warn "... unloading $pkg";
2329 2347
2330 if (my $cb = $pkg->can ("unload")) { 2348 if (my $cb = $pkg->can ("unload")) {
2331 eval { 2349 eval {
… …
2336 2354
2337 warn "... nuking $pkg"; 2355 warn "... nuking $pkg";
2338 Symbol::delete_package $pkg; 2356 Symbol::delete_package $pkg;
2339 } 2357 }
2340 2358
2341 warn "unload all perl modules loaded from $LIBDIR"; 2359 warn "unloading all perl modules loaded from $LIBDIR";
2342 while (my ($k, $v) = each %INC) { 2360 while (my ($k, $v) = each %INC) {
2343 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/; 2361 next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
2344 2362
2345 warn "removing <$k>"; 2363 warn "... unloading $k";
2346 delete $INC{$k}; 2364 delete $INC{$k};
2347 2365
2348 $k =~ s/\.pm$//; 2366 $k =~ s/\.pm$//;
2349 $k =~ s/\//::/g; 2367 $k =~ s/\//::/g;
2350 2368
… …
2353 } 2371 }
2354 2372
2355 Symbol::delete_package $k; 2373 Symbol::delete_package $k;
2356 } 2374 }
2357 2375
2358 warn "get rid of safe::, as good as possible"; 2376 warn "getting rid of safe::, as good as possible";
2359 Symbol::delete_package "safe::$_" 2377 Symbol::delete_package "safe::$_"
2360 for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region); 2378 for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
2361 2379
2362 warn "unload cf.pm \"a bit\""; 2380 warn "unloading cf.pm \"a bit\"";
2363 delete $INC{"cf.pm"}; 2381 delete $INC{"cf.pm"};
2364 2382
2365 # don't, removes xs symbols, too, 2383 # don't, removes xs symbols, too,
2366 # and global variables created in xs 2384 # and global variables created in xs
2367 #Symbol::delete_package __PACKAGE__; 2385 #Symbol::delete_package __PACKAGE__;
2368 2386
2387 warn "unload completed, starting to reload now";
2388
2369 warn "reloading cf.pm"; 2389 warn "reloading cf.pm";
2370 require cf; 2390 require cf;
2371 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt 2391 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
2372 2392
2373 warn "load config and database again"; 2393 warn "loading config and database again";
2374 cf::cfg_load; 2394 cf::cfg_load;
2375 cf::db_load; 2395 cf::db_load;
2376 2396
2377 warn "load extensions"; 2397 warn "loading extensions";
2378 cf::load_extensions; 2398 cf::load_extensions;
2379 2399
2380 warn "reattach attachments to objects/players"; 2400 warn "reattaching attachments to objects/players";
2381 _global_reattach; 2401 _global_reattach;
2382 warn "reattach attachments to maps"; 2402 warn "reattaching attachments to maps";
2383 reattach $_ for values %MAP; 2403 reattach $_ for values %MAP;
2404
2405 warn "restarting server ticker";
2406
2407 $TICK_WATCHER->start;
2384 }; 2408 };
2385 2409
2386 if ($@) { 2410 if ($@) {
2387 warn $@; 2411 warn $@;
2388 warn "error while reloading, exiting."; 2412 warn "error while reloading, exiting.";
… …
2390 } 2414 }
2391 2415
2392 warn "reloaded"; 2416 warn "reloaded";
2393}; 2417};
2394 2418
2419our $RELOAD_WATCHER; # used only during reload
2420
2395register_command "reload" => sub { 2421register_command "reload" => sub {
2396 my ($who, $arg) = @_; 2422 my ($who, $arg) = @_;
2397 2423
2398 if ($who->flag (FLAG_WIZ)) { 2424 if ($who->flag (FLAG_WIZ)) {
2399 $who->message ("start of reload."); 2425 $who->message ("reloading server.");
2426
2427 # doing reload synchronously and two reloads happen back-to-back,
2428 # coro crashes during coro_state_free->destroy here.
2429
2430 $RELOAD_WATCHER ||= Event->timer (after => 0, data => WF_AUTOCANCEL, cb => sub {
2400 reload; 2431 reload;
2401 $who->message ("end of reload."); 2432 undef $RELOAD_WATCHER;
2433 });
2402 } 2434 }
2403}; 2435};
2404 2436
2405unshift @INC, $LIBDIR; 2437unshift @INC, $LIBDIR;
2438
2439my $bug_warning = 0;
2406 2440
2407$TICK_WATCHER = Event->timer ( 2441$TICK_WATCHER = Event->timer (
2408 reentrant => 0, 2442 reentrant => 0,
2443 parked => 1,
2409 prio => 0, 2444 prio => 0,
2410 at => $NEXT_TICK || $TICK, 2445 at => $NEXT_TICK || $TICK,
2411 data => WF_AUTOCANCEL, 2446 data => WF_AUTOCANCEL,
2412 cb => sub { 2447 cb => sub {
2448 if ($Coro::current != $Coro::main) {
2449 Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2450 unless ++$bug_warning > 10;
2451 return;
2452 }
2453
2413 $NOW = Event::time; 2454 $NOW = Event::time;
2414 2455
2415 cf::server_tick; # one server iteration 2456 cf::server_tick; # one server iteration
2416 $RUNTIME += $TICK; 2457 $RUNTIME += $TICK;
2417 $NEXT_TICK += $TICK; 2458 $NEXT_TICK += $TICK;
… …
2437 cb => \&IO::AIO::poll_cb, 2478 cb => \&IO::AIO::poll_cb,
2438); 2479);
2439 2480
2440$WRITE_RUNTIME_WATCHER = Event->timer ( 2481$WRITE_RUNTIME_WATCHER = Event->timer (
2441 data => WF_AUTOCANCEL, 2482 data => WF_AUTOCANCEL,
2442 after => 0, 2483 after => 1,
2443 interval => 10, 2484 interval => 10,
2444 cb => sub { 2485 prio => 6, # keep it lowest so it acts like a watchdog
2445 (Coro::unblock_sub { 2486 cb => Coro::unblock_sub {
2446 write_runtime 2487 write_runtime
2447 or warn "ERROR: unable to write runtime file: $!"; 2488 or warn "ERROR: unable to write runtime file: $!";
2448 })->();
2449 }, 2489 },
2450); 2490);
2451 2491
2452END { cf::emergency_save } 2492END { cf::emergency_save }
2453 2493

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