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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.114 by root, Mon Jan 1 16:00:10 2007 UTC vs.
Revision 1.131 by root, Thu Jan 4 00:53:54 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;
… …
71mkdir cf::localdir . "/" . cf::uniquedir; 71mkdir cf::localdir . "/" . cf::uniquedir;
72mkdir $RANDOM_MAPS; 72mkdir $RANDOM_MAPS;
73 73
74# a special map that is always available 74# a special map that is always available
75our $LINK_MAP; 75our $LINK_MAP;
76 76our $EMERGENCY_POSITION;
77our $EMERGENCY_POSITION = $cf::CFG{emergency_position} || ["/world/world_105_115", 5, 37];
78 77
79############################################################################# 78#############################################################################
80 79
81=head2 GLOBAL VARIABLES 80=head2 GLOBAL VARIABLES
82 81
… …
181sub to_json($) { 180sub to_json($) {
182 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs 181 $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs
183 JSON::Syck::Dump $_[0] 182 JSON::Syck::Dump $_[0]
184} 183}
185 184
185=item my $guard = cf::guard { BLOCK }
186
187Run the given callback when the guard object gets destroyed (useful for
188coroutine cancellations).
189
190You can call C<< ->cancel >> on the guard object to stop the block from
191being executed.
192
193=cut
194
195sub guard(&) {
196 bless \(my $cb = $_[0]), cf::guard::;
197}
198
199sub cf::guard::cancel {
200 ${$_[0]} = sub { };
201}
202
203sub cf::guard::DESTROY {
204 ${$_[0]}->();
205}
206
207=item cf::lock_wait $string
208
209Wait until the given lock is available. See cf::lock_acquire.
210
211=item my $lock = cf::lock_acquire $string
212
213Wait until the given lock is available and then acquires it and returns
214a guard object. If the guard object gets destroyed (goes out of scope,
215for example when the coroutine gets canceled), the lock is automatically
216returned.
217
218Lock names should begin with a unique identifier (for example, find_map
219uses map_find and load_map uses map_load).
220
221=cut
222
223our %LOCK;
224
225sub lock_wait($) {
226 my ($key) = @_;
227
228 # wait for lock, if any
229 while ($LOCK{$key}) {
230 push @{ $LOCK{$key} }, $Coro::current;
231 Coro::schedule;
232 }
233}
234
235sub lock_acquire($) {
236 my ($key) = @_;
237
238 # wait, to be sure we are not locked
239 lock_wait $key;
240
241 $LOCK{$key} = [];
242
243 cf::guard {
244 # wake up all waiters, to be on the safe side
245 $_->ready for @{ delete $LOCK{$key} };
246 }
247}
248
249=item cf::async { BLOCK }
250
251Like C<Coro::async>, but runs the given BLOCK in an eval and only logs the
252error instead of exiting the server in case of a problem.
253
254=cut
255
256sub async(&) {
257 my ($cb) = @_;
258
259 Coro::async {
260 eval { $cb->() };
261 warn $@ if $@;
262 }
263}
264
186=item cf::sync_job { BLOCK } 265=item cf::sync_job { BLOCK }
187 266
188The design of crossfire+ requires that the main coro ($Coro::main) is 267The design of crossfire+ requires that the main coro ($Coro::main) is
189always able to handle events or runnable, as crossfire+ is only partly 268always 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. 269reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
… …
237=cut 316=cut
238 317
239sub coro(&) { 318sub coro(&) {
240 my $cb = shift; 319 my $cb = shift;
241 320
242 my $coro; $coro = async { 321 my $coro = &cf::async ($cb);
243 eval {
244 $cb->();
245 };
246 warn $@ if $@;
247 };
248 322
249 $coro->on_destroy (sub { 323 $coro->on_destroy (sub {
250 delete $EXT_CORO{$coro+0}; 324 delete $EXT_CORO{$coro+0};
251 }); 325 });
252 $EXT_CORO{$coro+0} = $coro; 326 $EXT_CORO{$coro+0} = $coro;
… …
817 (aio_load "$filename.pst", $av) >= 0 891 (aio_load "$filename.pst", $av) >= 0
818 or return; 892 or return;
819 $av = eval { (Storable::thaw $av)->{objs} }; 893 $av = eval { (Storable::thaw $av)->{objs} };
820 } 894 }
821 895
896 warn sprintf "loading %s (%d)\n",
897 $filename, length $data, scalar @{$av || []};#d#
822 return ($data, $av); 898 return ($data, $av);
823} 899}
824 900
825############################################################################# 901#############################################################################
826# command handling &c 902# command handling &c
… …
1087# and all this just because we cannot iterate over 1163# and all this just because we cannot iterate over
1088# all maps in C++... 1164# all maps in C++...
1089sub change_all_map_light { 1165sub change_all_map_light {
1090 my ($change) = @_; 1166 my ($change) = @_;
1091 1167
1092 $_->change_map_light ($change) for values %cf::MAP; 1168 $_->change_map_light ($change)
1169 for grep $_->outdoor, values %cf::MAP;
1093} 1170}
1094 1171
1095sub try_load_header($) { 1172sub try_load_header($) {
1096 my ($path) = @_; 1173 my ($path) = @_;
1097 1174
… …
1108 $map->{load_path} = $path; 1185 $map->{load_path} = $path;
1109 1186
1110 $map 1187 $map
1111} 1188}
1112 1189
1190sub find_map;
1113sub find_map { 1191sub find_map {
1114 my ($path, $origin) = @_; 1192 my ($path, $origin) = @_;
1115 1193
1116 #warn "find_map<$path,$origin>\n";#d# 1194 #warn "find_map<$path,$origin>\n";#d#
1117 1195
1118 $path = new cf::path $path, $origin && $origin->path; 1196 $path = new cf::path $path, $origin && $origin->path;
1119 my $key = $path->as_string; 1197 my $key = $path->as_string;
1120 1198
1199 cf::lock_wait "map_find:$key";
1200
1121 $cf::MAP{$key} || do { 1201 $cf::MAP{$key} || do {
1202 my $guard = cf::lock_acquire "map_find:$key";
1203
1122 # do it the slow way 1204 # do it the slow way
1123 my $map = try_load_header $path->save_path; 1205 my $map = try_load_header $path->save_path;
1124 1206
1125 if ($map) { 1207 if ($map) {
1126 # safety 1208 # safety
… …
1143 $map->per_player (0) if $path->{user_rel}; 1225 $map->per_player (0) if $path->{user_rel};
1144 } 1226 }
1145 1227
1146 $map->path ($key); 1228 $map->path ($key);
1147 $map->{path} = $path; 1229 $map->{path} = $path;
1230 $map->{last_save} = $cf::RUNTIME;
1148 $map->last_access ($cf::RUNTIME); 1231 $map->last_access ($cf::RUNTIME);
1149 1232
1150 if ($map->should_reset) { 1233 if ($map->should_reset) {
1151 $map->reset; 1234 $map->reset;
1235 undef $guard;
1152 $map = find_map $path; 1236 $map = find_map $path
1237 or return;
1153 } 1238 }
1154 1239
1155 $cf::MAP{$key} = $map 1240 $cf::MAP{$key} = $map
1156 } 1241 }
1157} 1242}
1158 1243
1159sub load { 1244sub load {
1160 my ($self) = @_; 1245 my ($self) = @_;
1161 1246
1247 my $path = $self->{path};
1248 my $guard = cf::lock_acquire "map_load:" . $path->as_string;
1249
1162 return if $self->in_memory != cf::MAP_SWAPPED; 1250 return if $self->in_memory != cf::MAP_SWAPPED;
1163 1251
1164 $self->in_memory (cf::MAP_LOADING); 1252 $self->in_memory (cf::MAP_LOADING);
1165
1166 my $path = $self->{path};
1167 1253
1168 $self->alloc; 1254 $self->alloc;
1169 $self->load_objects ($self->{load_path}, 1) 1255 $self->load_objects ($self->{load_path}, 1)
1170 or return; 1256 or return;
1171 1257
… …
1213} 1299}
1214 1300
1215sub save { 1301sub save {
1216 my ($self) = @_; 1302 my ($self) = @_;
1217 1303
1304 $self->{last_save} = $cf::RUNTIME;
1305
1306 return unless $self->dirty;
1307
1218 my $save = $self->{path}->save_path; utf8::encode $save; 1308 my $save = $self->{path}->save_path; utf8::encode $save;
1219 my $uniq = $self->{path}->uniq_path; utf8::encode $uniq; 1309 my $uniq = $self->{path}->uniq_path; utf8::encode $uniq;
1220
1221 $self->{last_save} = $cf::RUNTIME;
1222
1223 return unless $self->dirty;
1224 1310
1225 $self->{load_path} = $save; 1311 $self->{load_path} = $save;
1226 1312
1227 return if $self->{deny_save}; 1313 return if $self->{deny_save};
1228 1314
… …
1235} 1321}
1236 1322
1237sub swap_out { 1323sub swap_out {
1238 my ($self) = @_; 1324 my ($self) = @_;
1239 1325
1326 # save first because save cedes
1327 $self->save;
1328
1240 return if $self->players; 1329 return if $self->players;
1241 return if $self->in_memory != cf::MAP_IN_MEMORY; 1330 return if $self->in_memory != cf::MAP_IN_MEMORY;
1242 return if $self->{deny_save}; 1331 return if $self->{deny_save};
1243 1332
1244 $self->save;
1245 $self->clear; 1333 $self->clear;
1246 $self->in_memory (cf::MAP_SWAPPED); 1334 $self->in_memory (cf::MAP_SWAPPED);
1247} 1335}
1248 1336
1249sub reset_at { 1337sub reset_at {
… …
1383 (ref $cf::CFG{"may_$access"} 1471 (ref $cf::CFG{"may_$access"}
1384 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}} 1472 ? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
1385 : $cf::CFG{"may_$access"}) 1473 : $cf::CFG{"may_$access"})
1386} 1474}
1387 1475
1476=item $player_object->enter_link
1477
1478Freezes the player and moves him/her to a special map (C<{link}>).
1479
1480The player should be reaosnably safe there for short amounts of time. You
1481I<MUST> call C<leave_link> as soon as possible, though.
1482
1483=item $player_object->leave_link ($map, $x, $y)
1484
1485Moves the player out of the specila link map onto the given map. If the
1486map is not valid (or omitted), the player will be moved back to the
1487location he/she was before the call to C<enter_link>, or, if that fails,
1488to the emergency map position.
1489
1490Might block.
1491
1492=cut
1493
1388sub cf::object::player::enter_link { 1494sub cf::object::player::enter_link {
1389 my ($self) = @_; 1495 my ($self) = @_;
1390 1496
1497 $self->deactivate_recursive;
1498
1391 return if $self->map == $LINK_MAP; 1499 return if $self->map == $LINK_MAP;
1392 1500
1393 $self->{_link_pos} = [$self->map->{path}, $self->x, $self->y] 1501 $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1394 if $self->map; 1502 if $self->map;
1395 1503
1396 $self->enter_map ($LINK_MAP, 20, 20); 1504 $self->enter_map ($LINK_MAP, 20, 20);
1397 $self->deactivate_recursive;
1398} 1505}
1399 1506
1400sub cf::object::player::leave_link { 1507sub cf::object::player::leave_link {
1401 my ($self, $map, $x, $y) = @_; 1508 my ($self, $map, $x, $y) = @_;
1402 1509
1403 my $link_pos = delete $self->{_link_pos}; 1510 my $link_pos = delete $self->{_link_pos};
1404 1511
1405 unless ($map) { 1512 unless ($map) {
1406 $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1407
1408 # restore original map position 1513 # restore original map position
1409 ($map, $x, $y) = @{ $link_pos || [] }; 1514 ($map, $x, $y) = @{ $link_pos || [] };
1410 $map = cf::map::find_map $map; 1515 $map = cf::map::find_map $map;
1411 1516
1412 unless ($map) { 1517 unless ($map) {
… …
1427 1532
1428 $self->activate_recursive; 1533 $self->activate_recursive;
1429 $self->enter_map ($map, $x, $y); 1534 $self->enter_map ($map, $x, $y);
1430} 1535}
1431 1536
1537cf::player->attach (
1538 on_logout => sub {
1539 my ($pl) = @_;
1540
1541 # abort map switching before logout
1542 if ($pl->ob->{_link_pos}) {
1543 cf::sync_job {
1544 $pl->ob->leave_link
1545 };
1546 }
1547 },
1548 on_login => sub {
1549 my ($pl) = @_;
1550
1551 # try to abort aborted map switching on player login :)
1552 # should happen only on crashes
1553 if ($pl->ob->{_link_pos}) {
1554 $pl->ob->enter_link;
1555 cf::async {
1556 # we need this sleep as the login has a concurrent enter_exit running
1557 # and this sleep increases chances of the player not ending up in scorn
1558 Coro::Timer::sleep 1;
1559 $pl->ob->leave_link;
1560 };
1561 }
1562 },
1563);
1564
1432=item $player_object->goto_map ($map, $x, $y) 1565=item $player_object->goto_map ($path, $x, $y)
1433 1566
1434=cut 1567=cut
1435 1568
1436sub cf::object::player::goto_map { 1569sub cf::object::player::goto_map {
1437 my ($self, $path, $x, $y) = @_; 1570 my ($self, $path, $x, $y) = @_;
1438 1571
1439 $self->enter_link; 1572 $self->enter_link;
1440 1573
1441 (Coro::async { 1574 (cf::async {
1442 $path = new cf::path $path; 1575 $path = new cf::path $path;
1443 1576
1444 my $map = cf::map::find_map $path->as_string; 1577 my $map = cf::map::find_map $path->as_string;
1445 $map = $map->customise_for ($self) if $map; 1578 $map = $map->customise_for ($self) if $map;
1446 1579
1447 warn "entering ", $map->path, " at ($x, $y)\n" 1580# warn "entering ", $map->path, " at ($x, $y)\n"
1448 if $map; 1581# if $map;
1582
1583 $map or $self->message ("The exit is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1449 1584
1450 $self->leave_link ($map, $x, $y); 1585 $self->leave_link ($map, $x, $y);
1451 })->prio (1); 1586 })->prio (1);
1452} 1587}
1453 1588
… …
1506 1641
1507 return unless $self->type == cf::PLAYER; 1642 return unless $self->type == cf::PLAYER;
1508 1643
1509 $self->enter_link; 1644 $self->enter_link;
1510 1645
1511 (Coro::async { 1646 (cf::async {
1512 unless (eval { 1647 unless (eval {
1513
1514 prepare_random_map $exit 1648 prepare_random_map $exit
1515 if $exit->slaying eq "/!"; 1649 if $exit->slaying eq "/!";
1516 1650
1517 my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path; 1651 my $path = new cf::path $exit->slaying, $exit->map && $exit->map->path;
1518 $self->goto_map ($path, $exit->stats->hp, $exit->stats->sp); 1652 $self->goto_map ($path, $exit->stats->hp, $exit->stats->sp);
… …
1580 on_reply => sub { 1714 on_reply => sub {
1581 my ($ns, $msg) = @_; 1715 my ($ns, $msg) = @_;
1582 1716
1583 # this weird shuffling is so that direct followup queries 1717 # this weird shuffling is so that direct followup queries
1584 # get handled first 1718 # get handled first
1585 my $queue = delete $ns->{query_queue}; 1719 my $queue = delete $ns->{query_queue}
1720 or return; # be conservative, not sure how that can happen, but we saw a crash here
1586 1721
1587 (shift @$queue)->[1]->($msg); 1722 (shift @$queue)->[1]->($msg);
1588 1723
1589 push @{ $ns->{query_queue} }, @$queue; 1724 push @{ $ns->{query_queue} }, @$queue;
1590 1725
… …
1607=cut 1742=cut
1608 1743
1609sub cf::client::coro { 1744sub cf::client::coro {
1610 my ($self, $cb) = @_; 1745 my ($self, $cb) = @_;
1611 1746
1612 my $coro; $coro = async { 1747 my $coro = &cf::async ($cb);
1613 eval {
1614 $cb->();
1615 };
1616 warn $@ if $@;
1617 };
1618 1748
1619 $coro->on_destroy (sub { 1749 $coro->on_destroy (sub {
1620 delete $self->{_coro}{$coro+0}; 1750 delete $self->{_coro}{$coro+0};
1621 }); 1751 });
1622 1752
… …
1794 1924
1795{ 1925{
1796 my $path = cf::localdir . "/database.pst"; 1926 my $path = cf::localdir . "/database.pst";
1797 1927
1798 sub db_load() { 1928 sub db_load() {
1799 warn "loading database $path\n";#d# remove later
1800 $DB = stat $path ? Storable::retrieve $path : { }; 1929 $DB = stat $path ? Storable::retrieve $path : { };
1801 } 1930 }
1802 1931
1803 my $pid; 1932 my $pid;
1804 1933
1805 sub db_save() { 1934 sub db_save() {
1806 warn "saving database $path\n";#d# remove later
1807 waitpid $pid, 0 if $pid; 1935 waitpid $pid, 0 if $pid;
1808 if (0 == ($pid = fork)) { 1936 if (0 == ($pid = fork)) {
1809 $DB->{_meta}{version} = 1; 1937 $DB->{_meta}{version} = 1;
1810 Storable::nstore $DB, "$path~"; 1938 Storable::nstore $DB, "$path~";
1811 rename "$path~", $path; 1939 rename "$path~", $path;
… …
1859 open my $fh, "<:utf8", cf::confdir . "/config" 1987 open my $fh, "<:utf8", cf::confdir . "/config"
1860 or return; 1988 or return;
1861 1989
1862 local $/; 1990 local $/;
1863 *CFG = YAML::Syck::Load <$fh>; 1991 *CFG = YAML::Syck::Load <$fh>;
1992
1993 $EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
1994
1995 if (exists $CFG{mlockall}) {
1996 eval {
1997 $CFG{mlockall} ? &mlockall : &munlockall
1998 and die "WARNING: m(un)lockall failed: $!\n";
1999 };
2000 warn $@ if $@;
2001 }
1864} 2002}
1865 2003
1866sub main { 2004sub main {
1867 # we must not ever block the main coroutine 2005 # we must not ever block the main coroutine
1868 local $Coro::idle = sub { 2006 local $Coro::idle = sub {
1869 Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d# 2007 Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
1870 (Coro::unblock_sub { 2008 (Coro::unblock_sub {
1871 Event::one_event; 2009 Event::one_event;
1872 })->(); 2010 })->();
1873 }; 2011 };
1874 2012
… …
2071 or warn "ERROR: unable to write runtime file: $!"; 2209 or warn "ERROR: unable to write runtime file: $!";
2072 })->(); 2210 })->();
2073 }, 2211 },
2074); 2212);
2075 2213
2214END { cf::emergency_save }
2215
20761 22161
2077 2217

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