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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.111 by root, Mon Jan 1 12:28:47 2007 UTC vs.
Revision 1.126 by root, Tue Jan 2 23:12:47 2007 UTC

… …
181sub to_json($) { 181sub to_json($) {
182 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs 182 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
183 JSON::Syck::Dump $_[0] 183 JSON::Syck::Dump $_[0]
184} 184}
185 185
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
209
210Wait until the given lock is available. See cf::lock_acquire.
211
212=item my $lock = cf::lock_acquire $string
213
214Wait until the given lock is available and then acquires it and returns
215a guard object. If the guard object gets destroyed (goes out of scope,
216for example when the coroutine gets canceled), the lock is automatically
217returned.
218
219Lock names should begin with a unique identifier (for example, find_map
220uses map_find and load_map uses map_load).
221
222=cut
223
224our %LOCK;
225
226sub lock_wait($) {
227 my ($key) = @_;
228
229 # wait for lock, if any
230 while ($LOCK{$key}) {
231 push @{ $LOCK{$key} }, $Coro::current;
232 Coro::schedule;
233 }
234}
235
236sub lock_acquire($) {
237 my ($key) = @_;
238
239 # wait, to be sure we are not locked
240 lock_wait $key;
241
242 $LOCK{$key} = [];
243
244 cf::guard {
245 # wake up all waiters, to be on the safe side
246 $_->ready for @{ delete $LOCK{$key} };
247 }
248}
249
186=item cf::sync_job { BLOCK } 250=item cf::sync_job { BLOCK }
187 251
188The design of crossfire+ requires that the main coro ($Coro::main) is 252The design of crossfire+ requires that the main coro ($Coro::main) is
189always able to handle events or runnable, as crossfire+ is only partly 253always able to handle events or runnable, as crossfire+ is only partly
190reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable. 254reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
… …
197=cut 261=cut
198 262
199sub sync_job(&) { 263sub sync_job(&) {
200 my ($job) = @_; 264 my ($job) = @_;
201 265
202 my $busy = 1;
203 my @res;
204
205 my $coro = Coro::async {
206 @res = eval { $job->() };
207 warn $@ if $@;
208 undef $busy;
209 };
210
211 if ($Coro::current == $Coro::main) { 266 if ($Coro::current == $Coro::main) {
267 # this is the main coro, too bad, we have to block
268 # till the operation succeeds, freezing the server :/
269
212 # TODO: use suspend/resume instead 270 # TODO: use suspend/resume instead
271 # (but this is cancel-safe)
213 local $FREEZE = 1; 272 local $FREEZE = 1;
273
274 my $busy = 1;
275 my @res;
276
277 (Coro::async {
278 @res = eval { $job->() };
279 warn $@ if $@;
280 undef $busy;
214 $coro->prio (Coro::PRIO_MAX); 281 })->prio (Coro::PRIO_MAX);
282
215 while ($busy) { 283 while ($busy) {
216 Coro::cede_notself; 284 Coro::cede_notself;
217 Event::one_event unless Coro::nready; 285 Event::one_event unless Coro::nready;
218 } 286 }
287
288 wantarray ? @res : $res[0]
219 } else { 289 } else {
220 $coro->join; 290 # we are in another coroutine, how wonderful, everything just works
291
292 $job->()
221 } 293 }
222
223 wantarray ? @res : $res[0]
224} 294}
225 295
226=item $coro = cf::coro { BLOCK } 296=item $coro = cf::coro { BLOCK }
227 297
228Creates and returns a new coro. This coro is automcatially being canceled 298Creates and returns a new coro. This coro is automcatially being canceled
… …
252 my $runtime = cf::localdir . "/runtime"; 322 my $runtime = cf::localdir . "/runtime";
253 323
254 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644 324 my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
255 or return; 325 or return;
256 326
257 my $value = $cf::RUNTIME; 327 my $value = $cf::RUNTIME + 1 + 10; # 10 is the runtime save interval, for a monotonic clock
258 (aio_write $fh, 0, (length $value), $value, 0) <= 0 328 (aio_write $fh, 0, (length $value), $value, 0) <= 0
259 and return; 329 and return;
260 330
261 aio_fsync $fh 331 aio_fsync $fh
262 and return; 332 and return;
… …
283 353
284 $path = $path->as_string if ref $path; 354 $path = $path->as_string if ref $path;
285 355
286 my $self = bless { }, $class; 356 my $self = bless { }, $class;
287 357
358 # {... are special paths that are not touched
359 # ?xxx/... are special absolute paths
360 # ?random/... random maps
361 # /! non-realised random map exit
362 # /... normal maps
363 # ~/... per-player maps without a specific player (DO NOT USE)
364 # ~user/... per-player map of a specific user
365
366 if ($path =~ /^{/) {
367 # fine as it is
288 if ($path =~ s{^\?random/}{}) { 368 } elsif ($path =~ s{^\?random/}{}) {
289 Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data; 369 Coro::AIO::aio_load "$cf::RANDOM_MAPS/$path.meta", my $data;
290 $self->{random} = cf::from_json $data; 370 $self->{random} = cf::from_json $data;
291 } else { 371 } else {
292 if ($path =~ s{^~([^/]+)?}{}) { 372 if ($path =~ s{^~([^/]+)?}{}) {
293 $self->{user_rel} = 1; 373 $self->{user_rel} = 1;
… …
798 or return; 878 or return;
799 879
800 unless (aio_stat "$filename.pst") { 880 unless (aio_stat "$filename.pst") {
801 (aio_load "$filename.pst", $av) >= 0 881 (aio_load "$filename.pst", $av) >= 0
802 or return; 882 or return;
803 $av = eval { (Storable::thaw <$av>)->{objs} }; 883 $av = eval { (Storable::thaw $av)->{objs} };
804 } 884 }
805 885
886 warn sprintf "loading %s (%d)\n",
887 $filename, length $data, scalar @{$av || []};#d#
806 return ($data, $av); 888 return ($data, $av);
807} 889}
808 890
809############################################################################# 891#############################################################################
810# command handling &c 892# command handling &c
… …
1046use Fcntl; 1128use Fcntl;
1047use Coro::AIO; 1129use Coro::AIO;
1048 1130
1049our $MAX_RESET = 7200; 1131our $MAX_RESET = 7200;
1050our $DEFAULT_RESET = 3600; 1132our $DEFAULT_RESET = 3600;
1051$MAX_RESET = 10;#d#
1052$DEFAULT_RESET = 10;#d#
1053 1133
1054sub generate_random_map { 1134sub generate_random_map {
1055 my ($path, $rmp) = @_; 1135 my ($path, $rmp) = @_;
1056 1136
1057 # mit "rum" bekleckern, nicht 1137 # mit "rum" bekleckern, nicht
… …
1073# and all this just because we cannot iterate over 1153# and all this just because we cannot iterate over
1074# all maps in C++... 1154# all maps in C++...
1075sub change_all_map_light { 1155sub change_all_map_light {
1076 my ($change) = @_; 1156 my ($change) = @_;
1077 1157
1078 $_->change_map_light ($change) for values %cf::MAP; 1158 $_->change_map_light ($change)
1159 for grep $_->outdoor, values %cf::MAP;
1079} 1160}
1080 1161
1081sub try_load_header($) { 1162sub try_load_header($) {
1082 my ($path) = @_; 1163 my ($path) = @_;
1083 1164
… …
1090 1171
1091 $map->load_header ($path) 1172 $map->load_header ($path)
1092 or return; 1173 or return;
1093 1174
1094 $map->{load_path} = $path; 1175 $map->{load_path} = $path;
1095 use Data::Dumper; warn Dumper $map;#d#
1096 1176
1097 $map 1177 $map
1098} 1178}
1099 1179
1180sub find_map;
1100sub find_map { 1181sub find_map {
1101 my ($path, $origin) = @_; 1182 my ($path, $origin) = @_;
1102 1183
1103 #warn "find_map<$path,$origin>\n";#d# 1184 #warn "find_map<$path,$origin>\n";#d#
1104 1185
1105 $path = ref $path ? $path : new cf::path $path, $origin && $origin->path; 1186 $path = new cf::path $path, $origin && $origin->path;
1106 my $key = $path->as_string; 1187 my $key = $path->as_string;
1107 1188
1189 cf::lock_wait "map_find:$key";
1190
1108 $cf::MAP{$key} || do { 1191 $cf::MAP{$key} || do {
1192 my $guard = cf::lock_acquire "map_find:$key";
1193
1109 # do it the slow way 1194 # do it the slow way
1110 my $map = try_load_header $path->save_path; 1195 my $map = try_load_header $path->save_path;
1111 1196
1112 if ($map) { 1197 if ($map) {
1113 # safety 1198 # safety
… …
1130 $map->per_player (0) if $path->{user_rel}; 1215 $map->per_player (0) if $path->{user_rel};
1131 } 1216 }
1132 1217
1133 $map->path ($key); 1218 $map->path ($key);
1134 $map->{path} = $path; 1219 $map->{path} = $path;
1220 $map->{last_save} = $cf::RUNTIME;
1135 $map->last_access ($cf::RUNTIME); 1221 $map->last_access ($cf::RUNTIME);
1136 1222
1137 $map->reset if $map->should_reset; 1223 if ($map->should_reset) {
1224 $map->reset;
1225 undef $guard;
1226 $map = find_map $path
1227 or return;
1228 }
1138 1229
1139 $cf::MAP{$key} = $map 1230 $cf::MAP{$key} = $map
1140 } 1231 }
1141} 1232}
1142 1233
1143sub load { 1234sub load {
1144 my ($self) = @_; 1235 my ($self) = @_;
1145 1236
1237 my $path = $self->{path};
1238 my $guard = cf::lock_acquire "map_load:" . $path->as_string;
1239
1146 return if $self->in_memory != cf::MAP_SWAPPED; 1240 return if $self->in_memory != cf::MAP_SWAPPED;
1147 1241
1148 $self->in_memory (cf::MAP_LOADING); 1242 $self->in_memory (cf::MAP_LOADING);
1149
1150 my $path = $self->{path};
1151 1243
1152 $self->alloc; 1244 $self->alloc;
1153 $self->load_objects ($self->{load_path}, 1) 1245 $self->load_objects ($self->{load_path}, 1)
1154 or return; 1246 or return;
1155 1247
1156 $self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1) if delete $self->{load_original}; 1248 $self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1249 if delete $self->{load_original};
1157 1250
1158 if (my $uniq = $path->uniq_path) { 1251 if (my $uniq = $path->uniq_path) {
1159 utf8::encode $uniq; 1252 utf8::encode $uniq;
1160 if (aio_open $uniq, O_RDONLY, 0) { 1253 if (aio_open $uniq, O_RDONLY, 0) {
1161 $self->clear_unique_items; 1254 $self->clear_unique_items;
… …
1196} 1289}
1197 1290
1198sub save { 1291sub save {
1199 my ($self) = @_; 1292 my ($self) = @_;
1200 1293
1294 $self->{last_save} = $cf::RUNTIME;
1295
1296 return unless $self->dirty;
1297
1201 my $save = $self->{path}->save_path; utf8::encode $save; 1298 my $save = $self->{path}->save_path; utf8::encode $save;
1202 my $uniq = $self->{path}->uniq_path; utf8::encode $uniq; 1299 my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
1203 1300
1204 $self->{last_save} = $cf::RUNTIME;
1205
1206 return unless $self->dirty;
1207
1208 $self->{load_path} = $save; 1301 $self->{load_path} = $save;
1209 1302
1210 return if $self->{deny_save}; 1303 return if $self->{deny_save};
1211
1212 warn "saving map ", $self->path;
1213 1304
1214 if ($uniq) { 1305 if ($uniq) {
1215 $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS); 1306 $self->save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
1216 $self->save_objects ($uniq, cf::IO_UNIQUES); 1307 $self->save_objects ($uniq, cf::IO_UNIQUES);
1217 } else { 1308 } else {
… …
1229 $self->save; 1320 $self->save;
1230 $self->clear; 1321 $self->clear;
1231 $self->in_memory (cf::MAP_SWAPPED); 1322 $self->in_memory (cf::MAP_SWAPPED);
1232} 1323}
1233 1324
1325sub reset_at {
1326 my ($self) = @_;
1327
1328 # TODO: safety, remove and allow resettable per-player maps
1329 return 1e99 if $self->{path}{user_rel};
1330 return 1e99 if $self->{deny_reset};
1331
1332 my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1333 my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1334
1335 $time + $to
1336}
1337
1234sub should_reset { 1338sub should_reset {
1235 my ($map) = @_; 1339 my ($self) = @_;
1236 1340
1237 # TODO: safety, remove and allow resettable per-player maps 1341 $self->reset_at <= $cf::RUNTIME
1238 return if $map->{path}{user_rel};#d#
1239 return if $map->{deny_reset};
1240 #return unless $map->reset_timeout;
1241
1242 my $time = $map->fixed_resettime ? $map->{instantiate_time} : $map->last_access;
1243 my $to = $map->reset_timeout || $DEFAULT_RESET;
1244 $to = $MAX_RESET if $to > $MAX_RESET;
1245
1246 $time + $to < $cf::RUNTIME
1247} 1342}
1248 1343
1249sub unlink_save { 1344sub unlink_save {
1250 my ($self) = @_; 1345 my ($self) = @_;
1251 1346
1252 utf8::encode (my $save = $self->{path}->save_path); 1347 utf8::encode (my $save = $self->{path}->save_path);
1253 aioreq_pri 3; IO::AIO::aio_unlink $save; 1348 aioreq_pri 3; IO::AIO::aio_unlink $save;
1254 aioreq_pri 3; IO::AIO::aio_unlink "$save.pst"; 1349 aioreq_pri 3; IO::AIO::aio_unlink "$save.pst";
1255} 1350}
1256 1351
1352sub rename {
1353 my ($self, $new_path) = @_;
1354
1355 $self->unlink_save;
1356
1357 delete $cf::MAP{$self->path};
1358 $self->{path} = new cf::path $new_path;
1359 $self->path ($self->{path}->as_string);
1360 $cf::MAP{$self->path} = $self;
1361
1362 $self->save;
1363}
1364
1257sub reset { 1365sub reset {
1258 my ($self) = @_; 1366 my ($self) = @_;
1259 1367
1260 return if $self->players; 1368 return if $self->players;
1261 return if $self->{path}{user_rel};#d# 1369 return if $self->{path}{user_rel};#d#
… …
1266 1374
1267 $_->clear_links_to ($self) for values %cf::MAP; 1375 $_->clear_links_to ($self) for values %cf::MAP;
1268 1376
1269 $self->unlink_save; 1377 $self->unlink_save;
1270 $self->destroy; 1378 $self->destroy;
1379}
1380
1381my $nuke_counter = "aaaa";
1382
1383sub nuke {
1384 my ($self) = @_;
1385
1386 $self->{deny_save} = 1;
1387 $self->reset_timeout (1);
1388 $self->rename ("{nuke}/" . ($nuke_counter++));
1389 $self->reset; # polite request, might not happen
1271} 1390}
1272 1391
1273sub customise_for { 1392sub customise_for {
1274 my ($map, $ob) = @_; 1393 my ($map, $ob) = @_;
1275 1394
… …
1340 (ref $cf::CFG{"may_$access"} 1459 (ref $cf::CFG{"may_$access"}
1341 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}} 1460 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
1342 : $cf::CFG{"may_$access"}) 1461 : $cf::CFG{"may_$access"})
1343} 1462}
1344 1463
1464=item $player_object->enter_link
1465
1466Freezes the player and moves him/her to a special map (C<{link}>).
1467
1468The player should be reaosnably safe there for short amounts of time. You
1469I<MUST> call C<leave_link> as soon as possible, though.
1470
1471=item $player_object->leave_link ($map, $x, $y)
1472
1473Moves the player out of the specila link map onto the given map. If the
1474map is not valid (or omitted), the player will be moved back to the
1475location he/she was before the call to C<enter_link>, or, if that fails,
1476to the emergency map position.
1477
1478Might block.
1479
1480=cut
1481
1345sub cf::object::player::enter_link { 1482sub cf::object::player::enter_link {
1346 my ($self) = @_; 1483 my ($self) = @_;
1347 1484
1485 $self->deactivate_recursive;
1486
1348 return if $self->map == $LINK_MAP; 1487 return if $self->map == $LINK_MAP;
1349 1488
1350 $self->{_link_pos} = [$self->map->{path}, $self->x, $self->y] 1489 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1351 if $self->map; 1490 if $self->map;
1352 1491
1353 $self->enter_map ($LINK_MAP, 20, 20); 1492 $self->enter_map ($LINK_MAP, 20, 20);
1354 $self->deactivate_recursive;
1355} 1493}
1356 1494
1357sub cf::object::player::leave_link { 1495sub cf::object::player::leave_link {
1358 my ($self, $map, $x, $y) = @_; 1496 my ($self, $map, $x, $y) = @_;
1359 1497
1360 my $link_pos = delete $self->{_link_pos}; 1498 my $link_pos = delete $self->{_link_pos};
1361 1499
1362 unless ($map) { 1500 unless ($map) {
1363 $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1364
1365 # restore original map position 1501 # restore original map position
1366 ($map, $x, $y) = @{ $link_pos || [] }; 1502 ($map, $x, $y) = @{ $link_pos || [] };
1367 $map = cf::map::find_map $map; 1503 $map = cf::map::find_map $map;
1368 1504
1369 unless ($map) { 1505 unless ($map) {
… …
1384 1520
1385 $self->activate_recursive; 1521 $self->activate_recursive;
1386 $self->enter_map ($map, $x, $y); 1522 $self->enter_map ($map, $x, $y);
1387} 1523}
1388 1524
1525cf::player->attach (
1526 on_logout => sub {
1527 my ($pl) = @_;
1528
1529 # abort map switching before logout
1530 if ($pl->ob->{_link_pos}) {
1531 cf::sync_job {
1532 $pl->ob->leave_link
1533 };
1534 }
1535 },
1536 on_login => sub {
1537 my ($pl) = @_;
1538
1539 # try to abort aborted map switching on player login :)
1540 # should happen only on crashes
1541 if ($pl->ob->{_link_pos}) {
1542 $pl->ob->enter_link;
1543 Coro::async {
1544 # 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
1546 Coro::Timer::sleep 1;
1547 $pl->ob->leave_link;
1548 };
1549 }
1550 },
1551);
1552
1389=item $player_object->goto_map ($map, $x, $y) 1553=item $player_object->goto_map ($path, $x, $y)
1390 1554
1391=cut 1555=cut
1392 1556
1393sub cf::object::player::goto_map { 1557sub cf::object::player::goto_map {
1394 my ($self, $path, $x, $y) = @_; 1558 my ($self, $path, $x, $y) = @_;
… …
1399 $path = new cf::path $path; 1563 $path = new cf::path $path;
1400 1564
1401 my $map = cf::map::find_map $path->as_string; 1565 my $map = cf::map::find_map $path->as_string;
1402 $map = $map->customise_for ($self) if $map; 1566 $map = $map->customise_for ($self) if $map;
1403 1567
1404 warn "entering ", $map->path, " at ($x, $y)\n" 1568# warn "entering ", $map->path, " at ($x, $y)\n"
1405 if $map; 1569# if $map;
1570
1571 $map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1406 1572
1407 $self->leave_link ($map, $x, $y); 1573 $self->leave_link ($map, $x, $y);
1408 })->prio (1); 1574 })->prio (1);
1409} 1575}
1410 1576
… …
1751 1917
1752{ 1918{
1753 my $path = cf::localdir . "/database.pst"; 1919 my $path = cf::localdir . "/database.pst";
1754 1920
1755 sub db_load() { 1921 sub db_load() {
1756 warn "loading database $path\n";#d# remove later
1757 $DB = stat $path ? Storable::retrieve $path : { }; 1922 $DB = stat $path ? Storable::retrieve $path : { };
1758 } 1923 }
1759 1924
1760 my $pid; 1925 my $pid;
1761 1926
1762 sub db_save() { 1927 sub db_save() {
1763 warn "saving database $path\n";#d# remove later
1764 waitpid $pid, 0 if $pid; 1928 waitpid $pid, 0 if $pid;
1765 if (0 == ($pid = fork)) { 1929 if (0 == ($pid = fork)) {
1766 $DB->{_meta}{version} = 1; 1930 $DB->{_meta}{version} = 1;
1767 Storable::nstore $DB, "$path~"; 1931 Storable::nstore $DB, "$path~";
1768 rename "$path~", $path; 1932 rename "$path~", $path;
… …
1821} 1985}
1822 1986
1823sub main { 1987sub main {
1824 # we must not ever block the main coroutine 1988 # we must not ever block the main coroutine
1825 local $Coro::idle = sub { 1989 local $Coro::idle = sub {
1826 Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d# 1990 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
1827 (Coro::unblock_sub { 1991 (Coro::unblock_sub {
1828 Event::one_event; 1992 Event::one_event;
1829 })->(); 1993 })->();
1830 }; 1994 };
1831 1995
… …
2028 or warn "ERROR: unable to write runtime file: $!"; 2192 or warn "ERROR: unable to write runtime file: $!";
2029 })->(); 2193 })->();
2030 }, 2194 },
2031); 2195);
2032 2196
2197END { cf::emergency_save }
2198
20331 21991
2034 2200

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