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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.126 by root, Tue Jan 2 23:12:47 2007 UTC vs.
Revision 1.137 by root, Fri Jan 5 10:23:05 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 3.3 ();
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;
… …
49our $UPTIME; $UPTIME ||= time; 49our $UPTIME; $UPTIME ||= time;
50our $RUNTIME; 50our $RUNTIME;
51 51
52our %MAP; # all maps 52our %MAP; # all maps
53our $LINK_MAP; # the special {link} map 53our $LINK_MAP; # the special {link} map
54our $FREEZE;
55our $RANDOM_MAPS = cf::localdir . "/random"; 54our $RANDOM_MAPS = cf::localdir . "/random";
56our %EXT_CORO; 55our %EXT_CORO;
57 56
58binmode STDOUT; 57binmode STDOUT;
59binmode STDERR; 58binmode STDERR;
… …
71mkdir cf::localdir . "/" . cf::uniquedir; 70mkdir cf::localdir . "/" . cf::uniquedir;
72mkdir $RANDOM_MAPS; 71mkdir $RANDOM_MAPS;
73 72
74# a special map that is always available 73# a special map that is always available
75our $LINK_MAP; 74our $LINK_MAP;
76 75our $EMERGENCY_POSITION;
77our $EMERGENCY_POSITION = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];
78 76
79############################################################################# 77#############################################################################
80 78
81=head2 GLOBAL VARIABLES 79=head2 GLOBAL VARIABLES
82 80
… …
181sub to_json($) { 179sub to_json($) {
182 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs 180 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
183 JSON::Syck::Dump $_[0] 181 JSON::Syck::Dump $_[0]
184} 182}
185 183
186=item my $guard = cf::guard { BLOCK }
187
188Run the given callback when the guard object gets destroyed (useful for
189coroutine cancellations).
190
191You can call C<< ->cancel >> on the guard object to stop the block from
192being executed.
193
194=cut
195
196sub guard(&) {
197 bless \(my $cb = $_[0]), cf::guard::;
198}
199
200sub cf::guard::cancel {
201 ${$_[0]} = sub { };
202}
203
204sub cf::guard::DESTROY {
205 ${$_[0]}->();
206}
207
208=item cf::lock_wait $string 184=item cf::lock_wait $string
209 185
210Wait until the given lock is available. See cf::lock_acquire. 186Wait until the given lock is available. See cf::lock_acquire.
211 187
212=item my $lock = cf::lock_acquire $string 188=item my $lock = cf::lock_acquire $string
213 189
214Wait until the given lock is available and then acquires it and returns 190Wait until the given lock is available and then acquires it and returns
215a guard object. If the guard object gets destroyed (goes out of scope, 191a Coro::guard object. If the guard object gets destroyed (goes out of scope,
216for example when the coroutine gets canceled), the lock is automatically 192for example when the coroutine gets canceled), the lock is automatically
217returned. 193returned.
218 194
219Lock names should begin with a unique identifier (for example, find_map 195Lock names should begin with a unique identifier (for example, cf::map::find
220uses map_find and load_map uses map_load). 196uses map_find and cf::map::load uses map_load).
221 197
222=cut 198=cut
223 199
224our %LOCK; 200our %LOCK;
225 201
… …
239 # wait, to be sure we are not locked 215 # wait, to be sure we are not locked
240 lock_wait $key; 216 lock_wait $key;
241 217
242 $LOCK{$key} = []; 218 $LOCK{$key} = [];
243 219
244 cf::guard { 220 Coro::guard {
245 # wake up all waiters, to be on the safe side 221 # wake up all waiters, to be on the safe side
246 $_->ready for @{ delete $LOCK{$key} }; 222 $_->ready for @{ delete $LOCK{$key} };
247 } 223 }
224}
225
226=item cf::async { BLOCK }
227
228Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
229error instead of exiting the server in case of a problem.
230
231=cut
232
233sub async(&) {
234 my ($cb) = @_;
235
236 Coro::async {
237 eval { $cb->() };
238 warn $@ if $@;
239 }
240}
241
242sub freeze_mainloop {
243 return unless $TICK_WATCHER->is_active;
244
245 my $guard = Coro::guard { $TICK_WATCHER->start };
246 $TICK_WATCHER->stop;
247 $guard
248} 248}
249 249
250=item cf::sync_job { BLOCK } 250=item cf::sync_job { BLOCK }
251 251
252The design of crossfire+ requires that the main coro ($Coro::main) is 252The design of crossfire+ requires that the main coro ($Coro::main) is
… …
267 # this is the main coro, too bad, we have to block 267 # this is the main coro, too bad, we have to block
268 # till the operation succeeds, freezing the server :/ 268 # till the operation succeeds, freezing the server :/
269 269
270 # TODO: use suspend/resume instead 270 # TODO: use suspend/resume instead
271 # (but this is cancel-safe) 271 # (but this is cancel-safe)
272 local $FREEZE = 1; 272 my $freeze_guard = freeze_mainloop;
273 273
274 my $busy = 1; 274 my $busy = 1;
275 my @res; 275 my @res;
276 276
277 (Coro::async { 277 (Coro::async {
… …
301=cut 301=cut
302 302
303sub coro(&) { 303sub coro(&) {
304 my $cb = shift; 304 my $cb = shift;
305 305
306 my $coro; $coro = async { 306 my $coro = &cf::async ($cb);
307 eval {
308 $cb->();
309 };
310 warn $@ if $@;
311 };
312 307
313 $coro->on_destroy (sub { 308 $coro->on_destroy (sub {
314 delete $EXT_CORO{$coro+0}; 309 delete $EXT_CORO{$coro+0};
315 }); 310 });
316 $EXT_CORO{$coro+0} = $coro; 311 $EXT_CORO{$coro+0} = $coro;
… …
1126package cf::map; 1121package cf::map;
1127 1122
1128use Fcntl; 1123use Fcntl;
1129use Coro::AIO; 1124use Coro::AIO;
1130 1125
1131our $MAX_RESET = 7200; 1126our $MAX_RESET = 3600;
1132our $DEFAULT_RESET = 3600; 1127our $DEFAULT_RESET = 3000;
1133 1128
1134sub generate_random_map { 1129sub generate_random_map {
1135 my ($path, $rmp) = @_; 1130 my ($path, $rmp) = @_;
1136 1131
1137 # mit "rum" bekleckern, nicht 1132 # mit "rum" bekleckern, nicht
… …
1167 or return; 1162 or return;
1168 1163
1169 my $map = cf::map::new 1164 my $map = cf::map::new
1170 or return; 1165 or return;
1171 1166
1167 # for better error messages only, will be overwritten
1168 $map->path ($path);
1169
1172 $map->load_header ($path) 1170 $map->load_header ($path)
1173 or return; 1171 or return;
1174 1172
1175 $map->{load_path} = $path; 1173 $map->{load_path} = $path;
1176 1174
1177 $map 1175 $map
1178} 1176}
1179 1177
1180sub find_map; 1178sub find;
1181sub find_map { 1179sub find {
1182 my ($path, $origin) = @_; 1180 my ($path, $origin) = @_;
1183 1181
1184 #warn "find_map<$path,$origin>\n";#d# 1182 #warn "find<$path,$origin>\n";#d#
1185 1183
1186 $path = new cf::path $path, $origin && $origin->path; 1184 $path = new cf::path $path, $origin && $origin->path;
1187 my $key = $path->as_string; 1185 my $key = $path->as_string;
1188 1186
1189 cf::lock_wait "map_find:$key"; 1187 cf::lock_wait "map_find:$key";
… …
1192 my $guard = cf::lock_acquire "map_find:$key"; 1190 my $guard = cf::lock_acquire "map_find:$key";
1193 1191
1194 # do it the slow way 1192 # do it the slow way
1195 my $map = try_load_header $path->save_path; 1193 my $map = try_load_header $path->save_path;
1196 1194
1195 Coro::cede;
1196
1197 if ($map) { 1197 if ($map) {
1198 $map->last_access ((delete $map->{last_access})
1199 || $cf::RUNTIME); #d#
1198 # safety 1200 # safety
1199 $map->{instantiate_time} = $cf::RUNTIME 1201 $map->{instantiate_time} = $cf::RUNTIME
1200 if $map->{instantiate_time} > $cf::RUNTIME; 1202 if $map->{instantiate_time} > $cf::RUNTIME;
1201 } else { 1203 } else {
1202 if (my $rmp = $path->random_map_params) { 1204 if (my $rmp = $path->random_map_params) {
… …
1207 1209
1208 $map or return; 1210 $map or return;
1209 1211
1210 $map->{load_original} = 1; 1212 $map->{load_original} = 1;
1211 $map->{instantiate_time} = $cf::RUNTIME; 1213 $map->{instantiate_time} = $cf::RUNTIME;
1214 $map->last_access ($cf::RUNTIME);
1212 $map->instantiate; 1215 $map->instantiate;
1213 1216
1214 # per-player maps become, after loading, normal maps 1217 # per-player maps become, after loading, normal maps
1215 $map->per_player (0) if $path->{user_rel}; 1218 $map->per_player (0) if $path->{user_rel};
1216 } 1219 }
1217 1220
1218 $map->path ($key); 1221 $map->path ($key);
1219 $map->{path} = $path; 1222 $map->{path} = $path;
1220 $map->{last_save} = $cf::RUNTIME; 1223 $map->{last_save} = $cf::RUNTIME;
1221 $map->last_access ($cf::RUNTIME); 1224
1225 Coro::cede;
1222 1226
1223 if ($map->should_reset) { 1227 if ($map->should_reset) {
1224 $map->reset; 1228 $map->reset;
1225 undef $guard; 1229 undef $guard;
1226 $map = find_map $path 1230 $map = find $path
1227 or return; 1231 or return;
1228 } 1232 }
1229 1233
1230 $cf::MAP{$key} = $map 1234 $cf::MAP{$key} = $map
1231 } 1235 }
… …
1253 if (aio_open $uniq, O_RDONLY, 0) { 1257 if (aio_open $uniq, O_RDONLY, 0) {
1254 $self->clear_unique_items; 1258 $self->clear_unique_items;
1255 $self->load_objects ($uniq, 0); 1259 $self->load_objects ($uniq, 0);
1256 } 1260 }
1257 } 1261 }
1262
1263 Coro::cede;
1258 1264
1259 # now do the right thing for maps 1265 # now do the right thing for maps
1260 $self->link_multipart_objects; 1266 $self->link_multipart_objects;
1261 1267
1262 if ($self->{path}->is_style_map) { 1268 if ($self->{path}->is_style_map) {
… …
1270 $self->difficulty ($self->estimate_difficulty) 1276 $self->difficulty ($self->estimate_difficulty)
1271 unless $self->difficulty; 1277 unless $self->difficulty;
1272 $self->activate; 1278 $self->activate;
1273 } 1279 }
1274 1280
1281 Coro::cede;
1282
1275 $self->in_memory (cf::MAP_IN_MEMORY); 1283 $self->in_memory (cf::MAP_IN_MEMORY);
1276} 1284}
1277 1285
1278sub load_map_sync { 1286sub find_sync {
1279 my ($path, $origin) = @_; 1287 my ($path, $origin) = @_;
1280 1288
1281 #warn "load_map_sync<$path, $origin>\n";#d# 1289 cf::sync_job { cf::map::find $path, $origin }
1290}
1282 1291
1283 cf::sync_job { 1292sub do_load_sync {
1284 my $map = cf::map::find_map $path, $origin 1293 my ($map) = @_;
1285 or return; 1294
1286 $map->load; 1295 cf::sync_job { $map->load };
1287 $map
1288 }
1289} 1296}
1290 1297
1291sub save { 1298sub save {
1292 my ($self) = @_; 1299 my ($self) = @_;
1293 1300
1301 my $lock = cf::lock_acquire "map_data:" . $self->path;
1302
1294 $self->{last_save} = $cf::RUNTIME; 1303 $self->{last_save} = $cf::RUNTIME;
1295 1304
1296 return unless $self->dirty; 1305 return unless $self->dirty;
1297 1306
1298 my $save = $self->{path}->save_path; utf8::encode $save; 1307 my $save = $self->{path}->save_path; utf8::encode $save;
1299 my $uniq = $self->{path}->uniq_path; utf8::encode $uniq; 1308 my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
1300 1309
1301 $self->{load_path} = $save; 1310 $self->{load_path} = $save;
1302 1311
1303 return if $self->{deny_save}; 1312 return if $self->{deny_save};
1313
1314 local $self->{last_access} = $self->last_access;#d#
1304 1315
1305 if ($uniq) { 1316 if ($uniq) {
1306 $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS); 1317 $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
1307 $self->save_objects ($uniq, cf::IO_UNIQUES); 1318 $self->save_objects ($uniq, cf::IO_UNIQUES);
1308 } else { 1319 } else {
… …
1311} 1322}
1312 1323
1313sub swap_out { 1324sub swap_out {
1314 my ($self) = @_; 1325 my ($self) = @_;
1315 1326
1327 # save first because save cedes
1328 $self->save;
1329
1330 my $lock = cf::lock_acquire "map_data:" . $self->path;
1331
1316 return if $self->players; 1332 return if $self->players;
1317 return if $self->in_memory != cf::MAP_IN_MEMORY; 1333 return if $self->in_memory != cf::MAP_IN_MEMORY;
1318 return if $self->{deny_save}; 1334 return if $self->{deny_save};
1319 1335
1320 $self->save;
1321 $self->clear; 1336 $self->clear;
1322 $self->in_memory (cf::MAP_SWAPPED); 1337 $self->in_memory (cf::MAP_SWAPPED);
1323} 1338}
1324 1339
1325sub reset_at { 1340sub reset_at {
… …
1363} 1378}
1364 1379
1365sub reset { 1380sub reset {
1366 my ($self) = @_; 1381 my ($self) = @_;
1367 1382
1383 my $lock = cf::lock_acquire "map_data:" . $self->path;
1384
1368 return if $self->players; 1385 return if $self->players;
1369 return if $self->{path}{user_rel};#d# 1386 return if $self->{path}{user_rel};#d#
1370 1387
1371 warn "resetting map ", $self->path;#d# 1388 warn "resetting map ", $self->path;#d#
1372 1389
… …
1391 1408
1392sub customise_for { 1409sub customise_for {
1393 my ($map, $ob) = @_; 1410 my ($map, $ob) = @_;
1394 1411
1395 if ($map->per_player) { 1412 if ($map->per_player) {
1396 return cf::map::find_map "~" . $ob->name . "/" . $map->{path}{path}; 1413 return cf::map::find "~" . $ob->name . "/" . $map->{path}{path};
1397 } 1414 }
1398 1415
1399 $map 1416 $map
1400} 1417}
1401 1418
1402sub emergency_save { 1419sub emergency_save {
1403 local $cf::FREEZE = 1; 1420 my $freeze_guard = cf::freeze_mainloop;
1404 1421
1405 warn "enter emergency map save\n"; 1422 warn "enter emergency map save\n";
1406 1423
1407 cf::sync_job { 1424 cf::sync_job {
1408 warn "begin emergency map save\n"; 1425 warn "begin emergency map save\n";
… …
1498 my $link_pos = delete $self->{_link_pos}; 1515 my $link_pos = delete $self->{_link_pos};
1499 1516
1500 unless ($map) { 1517 unless ($map) {
1501 # restore original map position 1518 # restore original map position
1502 ($map, $x, $y) = @{ $link_pos || [] }; 1519 ($map, $x, $y) = @{ $link_pos || [] };
1503 $map = cf::map::find_map $map; 1520 $map = cf::map::find $map;
1504 1521
1505 unless ($map) { 1522 unless ($map) {
1506 ($map, $x, $y) = @$EMERGENCY_POSITION; 1523 ($map, $x, $y) = @$EMERGENCY_POSITION;
1507 $map = cf::map::find_map $map 1524 $map = cf::map::find $map
1508 or die "FATAL: cannot load emergency map\n"; 1525 or die "FATAL: cannot load emergency map\n";
1509 } 1526 }
1510 } 1527 }
1511 1528
1512 ($x, $y) = (-1, -1) 1529 ($x, $y) = (-1, -1)
… …
1538 1555
1539 # try to abort aborted map switching on player login :) 1556 # try to abort aborted map switching on player login :)
1540 # should happen only on crashes 1557 # should happen only on crashes
1541 if ($pl->ob->{_link_pos}) { 1558 if ($pl->ob->{_link_pos}) {
1542 $pl->ob->enter_link; 1559 $pl->ob->enter_link;
1543 Coro::async { 1560 cf::async {
1544 # we need this sleep as the login has a concurrent enter_exit running 1561 # we need this sleep as the login has a concurrent enter_exit running
1545 # and this sleep increases chances of the player not ending up in scorn 1562 # and this sleep increases chances of the player not ending up in scorn
1546 Coro::Timer::sleep 1; 1563 Coro::Timer::sleep 1;
1547 $pl->ob->leave_link; 1564 $pl->ob->leave_link;
1548 }; 1565 };
1549 } 1566 }
1550 }, 1567 },
1551); 1568);
1552 1569
1553=item $player_object->goto_map ($path, $x, $y) 1570=item $player_object->goto ($path, $x, $y)
1554 1571
1555=cut 1572=cut
1556 1573
1557sub cf::object::player::goto_map { 1574sub cf::object::player::goto {
1558 my ($self, $path, $x, $y) = @_; 1575 my ($self, $path, $x, $y) = @_;
1559 1576
1560 $self->enter_link; 1577 $self->enter_link;
1561 1578
1562 (Coro::async { 1579 (cf::async {
1563 $path = new cf::path $path; 1580 $path = new cf::path $path;
1564 1581
1565 my $map = cf::map::find_map $path->as_string; 1582 my $map = cf::map::find $path->as_string;
1566 $map = $map->customise_for ($self) if $map; 1583 $map = $map->customise_for ($self) if $map;
1567 1584
1568# warn "entering ", $map->path, " at ($x, $y)\n" 1585# warn "entering ", $map->path, " at ($x, $y)\n"
1569# if $map; 1586# if $map;
1570 1587
… …
1629 1646
1630 return unless $self->type == cf::PLAYER; 1647 return unless $self->type == cf::PLAYER;
1631 1648
1632 $self->enter_link; 1649 $self->enter_link;
1633 1650
1634 (Coro::async { 1651 (cf::async {
1652 $self->deactivate_recursive; # just to be sure
1635 unless (eval { 1653 unless (eval {
1636
1637 prepare_random_map $exit 1654 prepare_random_map $exit
1638 if $exit->slaying eq "/!"; 1655 if $exit->slaying eq "/!";
1639 1656
1640 my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path; 1657 my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
1641 $self->goto_map ($path, $exit->stats->hp, $exit->stats->sp); 1658 $self->goto ($path, $exit->stats->hp, $exit->stats->sp);
1642 1659
1643 1; 1660 1;
1644 }) { 1661 }) {
1645 $self->message ("Something went wrong deep within the crossfire server. " 1662 $self->message ("Something went wrong deep within the crossfire server. "
1646 . "I'll try to bring you back to the map you were before. " 1663 . "I'll try to bring you back to the map you were before. "
… …
1703 on_reply => sub { 1720 on_reply => sub {
1704 my ($ns, $msg) = @_; 1721 my ($ns, $msg) = @_;
1705 1722
1706 # this weird shuffling is so that direct followup queries 1723 # this weird shuffling is so that direct followup queries
1707 # get handled first 1724 # get handled first
1708 my $queue = delete $ns->{query_queue}; 1725 my $queue = delete $ns->{query_queue}
1726 or return; # be conservative, not sure how that can happen, but we saw a crash here
1709 1727
1710 (shift @$queue)->[1]->($msg); 1728 (shift @$queue)->[1]->($msg);
1711 1729
1712 push @{ $ns->{query_queue} }, @$queue; 1730 push @{ $ns->{query_queue} }, @$queue;
1713 1731
… …
1730=cut 1748=cut
1731 1749
1732sub cf::client::coro { 1750sub cf::client::coro {
1733 my ($self, $cb) = @_; 1751 my ($self, $cb) = @_;
1734 1752
1735 my $coro; $coro = async { 1753 my $coro = &cf::async ($cb);
1736 eval {
1737 $cb->();
1738 };
1739 warn $@ if $@;
1740 };
1741 1754
1742 $coro->on_destroy (sub { 1755 $coro->on_destroy (sub {
1743 delete $self->{_coro}{$coro+0}; 1756 delete $self->{_coro}{$coro+0};
1744 }); 1757 });
1745 1758
… …
1980 open my $fh, "<:utf8", cf::confdir . "/config" 1993 open my $fh, "<:utf8", cf::confdir . "/config"
1981 or return; 1994 or return;
1982 1995
1983 local $/; 1996 local $/;
1984 *CFG = YAML::Syck::Load <$fh>; 1997 *CFG = YAML::Syck::Load <$fh>;
1998
1999 $EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
2000
2001 if (exists $CFG{mlockall}) {
2002 eval {
2003 $CFG{mlockall} ? &mlockall : &munlockall
2004 and die "WARNING: m(un)lockall failed: $!\n";
2005 };
2006 warn $@ if $@;
2007 }
1985} 2008}
1986 2009
1987sub main { 2010sub main {
1988 # we must not ever block the main coroutine 2011 # we must not ever block the main coroutine
1989 local $Coro::idle = sub { 2012 local $Coro::idle = sub {
… …
2009 return; 2032 return;
2010 } 2033 }
2011 2034
2012 warn "reloading..."; 2035 warn "reloading...";
2013 2036
2014 local $FREEZE = 1; 2037 my $guard = freeze_mainloop;
2015 cf::emergency_save; 2038 cf::emergency_save;
2016 2039
2017 eval { 2040 eval {
2018 # if anything goes wrong in here, we should simply crash as we already saved 2041 # if anything goes wrong in here, we should simply crash as we already saved
2019 2042
… …
2155 reentrant => 0, 2178 reentrant => 0,
2156 prio => 0, 2179 prio => 0,
2157 at => $NEXT_TICK || $TICK, 2180 at => $NEXT_TICK || $TICK,
2158 data => WF_AUTOCANCEL, 2181 data => WF_AUTOCANCEL,
2159 cb => sub { 2182 cb => sub {
2160 unless ($FREEZE) {
2161 cf::server_tick; # one server iteration 2183 cf::server_tick; # one server iteration
2162 $RUNTIME += $TICK; 2184 $RUNTIME += $TICK;
2163 }
2164
2165 $NEXT_TICK += $TICK; 2185 $NEXT_TICK += $TICK;
2166 2186
2167 # if we are delayed by four ticks or more, skip them all 2187 # if we are delayed by four ticks or more, skip them all
2168 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4; 2188 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
2169 2189

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