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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.207 by root, Sun Feb 11 22:42:09 2007 UTC vs.
Revision 1.217 by root, Thu Feb 15 21:07:49 2007 UTC

… …
22use Digest::MD5; 22use Digest::MD5;
23use Fcntl; 23use Fcntl;
24use IO::AIO 2.32 (); 24use IO::AIO 2.32 ();
25use YAML::Syck (); 25use YAML::Syck ();
26use Time::HiRes; 26use Time::HiRes;
27use Compress::LZF;
28
29Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
27 30
28use Event; $Event::Eval = 1; # no idea why this is required, but it is 31use Event; $Event::Eval = 1; # no idea why this is required, but it is
29 32
30sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload 33sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31 34
… …
46our $LIBDIR = datadir . "/ext"; 49our $LIBDIR = datadir . "/ext";
47 50
48our $TICK = MAX_TIME * 1e-6; 51our $TICK = MAX_TIME * 1e-6;
49our $TICK_WATCHER; 52our $TICK_WATCHER;
50our $AIO_POLL_WATCHER; 53our $AIO_POLL_WATCHER;
51our $WRITE_RUNTIME_WATCHER; 54our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
52our $NEXT_TICK; 55our $NEXT_TICK;
53our $NOW; 56our $NOW;
54our $USE_FSYNC = 1; # use fsync to write maps - default off 57our $USE_FSYNC = 1; # use fsync to write maps - default off
55 58
56our $BDB_POLL_WATCHER; 59our $BDB_POLL_WATCHER;
… …
270sub freeze_mainloop { 273sub freeze_mainloop {
271 return unless $TICK_WATCHER->is_active; 274 return unless $TICK_WATCHER->is_active;
272 275
273 my $guard = Coro::guard { 276 my $guard = Coro::guard {
274 $TICK_WATCHER->start; 277 $TICK_WATCHER->start;
275 $WRITE_RUNTIME_WATCHER->start;
276 }; 278 };
277 $WRITE_RUNTIME_WATCHER->stop;
278 $TICK_WATCHER->stop; 279 $TICK_WATCHER->stop;
279 $guard 280 $guard
280} 281}
281 282
282=item cf::async { BLOCK } 283=item cf::async { BLOCK }
… …
784 } 785 }
785 } else { 786 } else {
786 aio_unlink $filename; 787 aio_unlink $filename;
787 aio_unlink "$filename.pst"; 788 aio_unlink "$filename.pst";
788 } 789 }
789
790 #d##TODO# nuke non .map-files if exist
791 if ($filename =~ s/\.map$//) {
792 aio_unlink $filename;
793 aio_unlink "$filename.pst";
794 }
795 } 790 }
796} 791}
797 792
798sub object_freezer_as_string { 793sub object_freezer_as_string {
799 my ($rdata, $objs) = @_; 794 my ($rdata, $objs) = @_;
… …
805 800
806sub object_thawer_load { 801sub object_thawer_load {
807 my ($filename) = @_; 802 my ($filename) = @_;
808 803
809 my ($data, $av); 804 my ($data, $av);
810
811 #d#TODO remove .map if file does not exist
812 aio_stat $filename and $filename =~ s/\.map$//;
813 805
814 (aio_load $filename, $data) >= 0 806 (aio_load $filename, $data) >= 0
815 or return; 807 or return;
816 808
817 unless (aio_stat "$filename.pst") { 809 unless (aio_stat "$filename.pst") {
… …
1304 my ($self) = @_; 1296 my ($self) = @_;
1305 1297
1306 utf8::encode (my $save = $self->save_path); 1298 utf8::encode (my $save = $self->save_path);
1307 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save; 1299 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
1308 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst"; 1300 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
1309
1310 #d#TODO remove .map and also nuke
1311 $save =~ s/\.map// or return;#d#
1312 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;#d#
1313 IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";#d#
1314} 1301}
1315 1302
1316sub load_header_from($) { 1303sub load_header_from($) {
1317 my ($self, $path) = @_; 1304 my ($self, $path) = @_;
1318 1305
… …
1606 return if $self->players; 1593 return if $self->players;
1607 return if $self->isa ("ext::map_per_player");#d# 1594 return if $self->isa ("ext::map_per_player");#d#
1608 1595
1609 warn "resetting map ", $self->path;#d# 1596 warn "resetting map ", $self->path;#d#
1610 1597
1598 $self->in_memory (cf::MAP_SWAPPED);
1599
1600 # need to save uniques path
1601 unless ($self->{deny_save}) {
1602 my $uniq = $self->uniq_path; utf8::encode $uniq;
1603
1604 $self->_save_objects ($uniq, cf::IO_UNIQUES)
1605 if $uniq;
1606 }
1607
1611 delete $cf::MAP{$self->path}; 1608 delete $cf::MAP{$self->path};
1612 1609
1613 $self->in_memory (cf::MAP_SWAPPED);
1614 $self->clear; 1610 $self->clear;
1615 1611
1616 $_->clear_links_to ($self) for values %cf::MAP; 1612 $_->clear_links_to ($self) for values %cf::MAP;
1617 1613
1618 $self->unlink_save; 1614 $self->unlink_save;
… …
1808 $map->load; 1804 $map->load;
1809 $map->load_diag; 1805 $map->load_diag;
1810 1806
1811 return unless $self->contr->active; 1807 return unless $self->contr->active;
1812 $self->activate_recursive; 1808 $self->activate_recursive;
1809
1810 local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1813 $self->enter_map ($map, $x, $y); 1811 $self->enter_map ($map, $x, $y);
1814} 1812}
1815 1813
1816cf::player->attach ( 1814cf::player->attach (
1817 on_logout => sub { 1815 on_logout => sub {
… …
1830 # try to abort aborted map switching on player login :) 1828 # try to abort aborted map switching on player login :)
1831 # should happen only on crashes 1829 # should happen only on crashes
1832 if ($pl->ob->{_link_pos}) { 1830 if ($pl->ob->{_link_pos}) {
1833 $pl->ob->enter_link; 1831 $pl->ob->enter_link;
1834 (async { 1832 (async {
1835 # we need this sleep as the login has a concurrent enter_exit running
1836 # and this sleep increases chances of the player not ending up in scorn
1837 $pl->ob->reply (undef, 1833 $pl->ob->reply (undef,
1838 "There was an internal problem at your last logout, " 1834 "There was an internal problem at your last logout, "
1839 . "the server will try to bring you to your intended destination in a second.", 1835 . "the server will try to bring you to your intended destination in a second.",
1840 cf::NDI_RED); 1836 cf::NDI_RED);
1837 # we need this sleep as the login has a concurrent enter_exit running
1838 # and this sleep increases chances of the player not ending up in scorn
1841 Coro::Timer::sleep 1; 1839 Coro::Timer::sleep 1;
1842 $pl->ob->leave_link; 1840 $pl->ob->leave_link;
1843 })->prio (2); 1841 })->prio (2);
1844 } 1842 }
1845 }, 1843 },
… …
2182The parameter C<$family> should best start with the name of the extension 2180The parameter C<$family> should best start with the name of the extension
2183using it, it should be unique. 2181using it, it should be unique.
2184 2182
2185=over 4 2183=over 4
2186 2184
2187=item $hashref = cf::db_get $family
2188
2189Return a hashref for use by the extension C<$family>, which can be
2190modified. After modifications, you have to call C<cf::db_dirty> or
2191C<cf::db_sync>.
2192
2193=item $value = cf::db_get $family => $key 2185=item $value = cf::db_get $family => $key
2194 2186
2195Returns a single value from the database 2187Returns a single value from the database.
2196
2197=item cf::db_put $family => $hashref
2198
2199Stores the given family hashref into the database. Updates are delayed, if
2200you want the data to be synced to disk immediately, use C<cf::db_sync>.
2201 2188
2202=item cf::db_put $family => $key => $value 2189=item cf::db_put $family => $key => $value
2203 2190
2204Stores the given C<$value> in the family hash. Updates are delayed, if you 2191Stores the given C<$value> in the family.
2205want the data to be synced to disk immediately, use C<cf::db_sync>.
2206
2207=item cf::db_dirty
2208
2209Marks the database as dirty, to be updated at a later time.
2210
2211=item cf::db_sync
2212
2213Immediately write the database to disk I<if it is dirty>.
2214 2192
2215=cut 2193=cut
2216 2194
2217our $DB; 2195our $DB;
2218 2196
2219{ 2197sub db_init {
2198 unless ($DB) {
2199 $DB = BDB::db_create $DB_ENV;
2200
2201 cf::sync_job {
2202 eval {
2203 $DB->set_flags (BDB::CHKSUM);
2204
2205 BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2206 BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2207 cf::cleanup "db_open(db): $!" if $!;
2208 };
2209 cf::cleanup "db_open(db): $@" if $@;
2210 };
2211
2220 my $path = cf::localdir . "/database.pst"; 2212 my $path = cf::localdir . "/database.pst";
2213 if (stat $path) {
2214 cf::sync_job {
2215 my $pst = Storable::retrieve $path;
2221 2216
2222 sub db_load() { 2217 cf::db_put (board => data => $pst->{board});
2223 $DB = stat $path ? Storable::retrieve $path : { }; 2218 cf::db_put (guildrules => data => $pst->{guildrules});
2224 } 2219 cf::db_put (rent => balance => $pst->{rent}{balance});
2220 BDB::db_env_txn_checkpoint $DB_ENV;
2225 2221
2226 my $pid; 2222 unlink $path;
2227
2228 sub db_save() {
2229 waitpid $pid, 0 if $pid;
2230 if (0 == ($pid = fork)) {
2231 $DB->{_meta}{version} = 1;
2232 Storable::nstore $DB, "$path~";
2233 rename "$path~", $path;
2234 cf::_exit 0 if defined $pid;
2235 } 2223 };
2236 }
2237
2238 my $dirty;
2239
2240 sub db_sync() {
2241 db_save if $dirty;
2242 undef $dirty;
2243 }
2244
2245 my $idle = Event->idle (
2246 reentrant => 0,
2247 min => 10,
2248 max => 20,
2249 repeat => 0,
2250 data => WF_AUTOCANCEL,
2251 cb => \&db_sync,
2252 );
2253
2254 sub db_dirty() {
2255 $dirty = 1;
2256 $idle->start;
2257 }
2258
2259 sub db_get($;$) {
2260 @_ >= 2
2261 ? $DB->{$_[0]}{$_[1]}
2262 : ($DB->{$_[0]} ||= { })
2263 }
2264
2265 sub db_put($$;$) {
2266 if (@_ >= 3) {
2267 $DB->{$_[0]}{$_[1]} = $_[2];
2268 } else {
2269 $DB->{$_[0]} = $_[1];
2270 }
2271 db_dirty;
2272 }
2273
2274 cf::global->attach (
2275 prio => 10000,
2276 on_cleanup => sub {
2277 db_sync;
2278 }, 2224 }
2279 ); 2225 }
2226}
2227
2228sub db_get($$) {
2229 my $key = "$_[0]/$_[1]";
2230
2231 cf::sync_job {
2232 BDB::db_get $DB, undef, $key, my $data;
2233
2234 $! ? ()
2235 : Compress::LZF::sthaw $data
2236 }
2237}
2238
2239sub db_put($$$) {
2240 BDB::dbreq_pri 4;
2241 BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
2280} 2242}
2281 2243
2282############################################################################# 2244#############################################################################
2283# the server's init and main functions 2245# the server's init and main functions
2284 2246
2285sub load_resources { 2247sub init_resources {
2286 load_regions sprintf "%s/%s/regions", cf::datadir, cf::mapdir 2248 load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir
2287 or die "unable to load regions file\n";#d# 2249 or die "unable to load regions file\n";#d#
2288} 2250}
2289 2251
2290sub cfg_load { 2252sub cfg_load {
2291 open my $fh, "<:utf8", cf::confdir . "/config" 2253 open my $fh, "<:utf8", cf::confdir . "/config"
… …
2307 warn $@ if $@; 2269 warn $@ if $@;
2308 } 2270 }
2309} 2271}
2310 2272
2311sub init { 2273sub init {
2312 load_resources; 2274 init_resources;
2313} 2275}
2314 2276
2315sub main { 2277sub main {
2316 # we must not ever block the main coroutine 2278 # we must not ever block the main coroutine
2317 local $Coro::idle = sub { 2279 local $Coro::idle = sub {
… …
2320 Event::one_event; 2282 Event::one_event;
2321 })->prio (Coro::PRIO_MAX); 2283 })->prio (Coro::PRIO_MAX);
2322 }; 2284 };
2323 2285
2324 cfg_load; 2286 cfg_load;
2325 db_load; 2287 db_init;
2326 load_extensions; 2288 load_extensions;
2327 2289
2328 $TICK_WATCHER->start; 2290 $TICK_WATCHER->start;
2329 Event::loop; 2291 Event::loop;
2330} 2292}
… …
2369 my $map = $cf::MAP{$path} or next; 2331 my $map = $cf::MAP{$path} or next;
2370 $map->valid or next; 2332 $map->valid or next;
2371 $map->save; 2333 $map->save;
2372 } 2334 }
2373 warn "end emergency map save\n"; 2335 warn "end emergency map save\n";
2336
2337 warn "begin emergency database checkpoint\n";
2338 BDB::db_env_txn_checkpoint $DB_ENV;
2339 warn "end emergency database checkpoint\n";
2374 }; 2340 };
2375 2341
2376 warn "leave emergency perl save\n"; 2342 warn "leave emergency perl save\n";
2343}
2344
2345sub post_cleanup {
2346 my ($make_core) = @_;
2347
2348 warn Carp::longmess "post_cleanup backtrace"
2349 if $make_core;
2377} 2350}
2378 2351
2379sub reload() { 2352sub reload() {
2380 # can/must only be called in main 2353 # can/must only be called in main
2381 if ($Coro::current != $Coro::main) { 2354 if ($Coro::current != $Coro::main) {
… …
2383 return; 2356 return;
2384 } 2357 }
2385 2358
2386 warn "reloading..."; 2359 warn "reloading...";
2387 2360
2388 warn "cancelling server ticker"; 2361 warn "entering sync_job";
2389 $TICK_WATCHER->cancel;
2390 2362
2363 cf::sync_job {
2364 cf::write_runtime; # external watchdog should not bark
2391 cf::emergency_save; 2365 cf::emergency_save;
2366 cf::write_runtime; # external watchdog should not bark
2392 2367
2393 eval { 2368 warn "syncing database to disk";
2369 BDB::db_env_txn_checkpoint $DB_ENV;
2370
2394 # if anything goes wrong in here, we should simply crash as we already saved 2371 # if anything goes wrong in here, we should simply crash as we already saved
2395
2396 warn "syncing database to disk";
2397 cf::db_sync;
2398 2372
2399 warn "cancelling all WF_AUTOCANCEL watchers"; 2373 warn "cancelling all WF_AUTOCANCEL watchers";
2400 for (Event::all_watchers) { 2374 for (Event::all_watchers) {
2401 $_->cancel if $_->data & WF_AUTOCANCEL; 2375 $_->cancel if $_->data & WF_AUTOCANCEL;
2402 } 2376 }
2403 2377
2404 warn "flushing outstanding aio requests"; 2378 warn "flushing outstanding aio requests";
2405 for (;;) { 2379 for (;;) {
2380 BDB::flush;
2406 IO::AIO::flush; 2381 IO::AIO::flush;
2407 Coro::cede; 2382 Coro::cede;
2408 last unless IO::AIO::nreqs; 2383 last unless IO::AIO::nreqs || BDB::nreqs;
2409 warn "iterate..."; 2384 warn "iterate...";
2410 } 2385 }
2411 2386
2412 warn "cancelling all extension coros"; 2387 warn "cancelling all extension coros";
2413 $_->cancel for values %EXT_CORO; 2388 $_->cancel for values %EXT_CORO;
… …
2468 require cf; 2443 require cf;
2469 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt 2444 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
2470 2445
2471 warn "loading config and database again"; 2446 warn "loading config and database again";
2472 cf::cfg_load; 2447 cf::cfg_load;
2473 cf::db_load;
2474 2448
2475 warn "loading extensions"; 2449 warn "loading extensions";
2476 cf::load_extensions; 2450 cf::load_extensions;
2477 2451
2478 warn "reattaching attachments to objects/players"; 2452 warn "reattaching attachments to objects/players";
2479 _global_reattach; 2453 _global_reattach;
2480 warn "reattaching attachments to maps"; 2454 warn "reattaching attachments to maps";
2481 reattach $_ for values %MAP; 2455 reattach $_ for values %MAP;
2482 2456
2483 warn "loading reloadable resources"; 2457 warn "loading reloadable resources";
2484 load_resources; 2458 init_resources;
2485 2459
2486 warn "restarting server ticker"; 2460 warn "leaving sync_job";
2487 2461
2488 $TICK_WATCHER->start; 2462 1
2489 }; 2463 } or do {
2490
2491 if ($@) {
2492 warn $@; 2464 warn $@;
2493 warn "error while reloading, exiting."; 2465 warn "error while reloading, exiting.";
2494 exit 1; 2466 exit 1;
2495 } 2467 };
2496 2468
2497 warn "reloaded"; 2469 warn "reloaded";
2498}; 2470};
2499 2471
2500our $RELOAD_WATCHER; # used only during reload 2472our $RELOAD_WATCHER; # used only during reload
… …
2541 2513
2542 cf::server_tick; # one server iteration 2514 cf::server_tick; # one server iteration
2543 $RUNTIME += $TICK; 2515 $RUNTIME += $TICK;
2544 $NEXT_TICK += $TICK; 2516 $NEXT_TICK += $TICK;
2545 2517
2518 if ($NOW >= $NEXT_RUNTIME_WRITE) {
2519 $NEXT_RUNTIME_WRITE = $NOW + 10;
2520 Coro::async_pool {
2521 write_runtime
2522 or warn "ERROR: unable to write runtime file: $!";
2523 };
2524 }
2525
2526
2546 $WAIT_FOR_TICK->broadcast; 2527 $WAIT_FOR_TICK->broadcast;
2547 $WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited; 2528 $WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
2548 2529
2549 Event::sweep;
2550 Coro::cede_notself;
2551
2552# my $AFTER = Event::time; 2530# my $AFTER = Event::time;
2553# warn $AFTER - $NOW;#d# 2531# warn $AFTER - $NOW;#d#
2554 2532
2555 # if we are delayed by four ticks or more, skip them all 2533 # if we are delayed by four ticks or more, skip them all
2556 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4; 2534 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
… …
2589 2567
2590 unless ($DB_ENV) { 2568 unless ($DB_ENV) {
2591 $DB_ENV = BDB::db_env_create; 2569 $DB_ENV = BDB::db_env_create;
2592 2570
2593 cf::sync_job { 2571 cf::sync_job {
2572 eval {
2594 BDB::db_env_open 2573 BDB::db_env_open
2595 $DB_ENV, 2574 $DB_ENV,
2596 $BDB_ENV_DIR, 2575 $BDB_ENV_DIR,
2597 BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN 2576 BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
2598 | BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE, 2577 | BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
2599 0666; 2578 0666;
2600 2579
2601 cf::cleanup "$!" if $!; 2580 cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
2602 2581
2603 $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1); 2582 $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
2604 $DB_ENV->set_lk_detect; 2583 $DB_ENV->set_lk_detect;
2584 };
2585
2586 cf::cleanup "db_env_open(db): $@" if $@;
2605 }; 2587 };
2606 } 2588 }
2607} 2589}
2608 2590
2609{ 2591{
… …
2611 2593
2612 undef $Coro::AIO::WATCHER; 2594 undef $Coro::AIO::WATCHER;
2613 IO::AIO::max_poll_time $TICK * 0.1; 2595 IO::AIO::max_poll_time $TICK * 0.1;
2614 $AIO_POLL_WATCHER = Event->io ( 2596 $AIO_POLL_WATCHER = Event->io (
2615 reentrant => 0, 2597 reentrant => 0,
2598 data => WF_AUTOCANCEL,
2616 fd => IO::AIO::poll_fileno, 2599 fd => IO::AIO::poll_fileno,
2617 poll => 'r', 2600 poll => 'r',
2618 prio => 6, 2601 prio => 6,
2619 data => WF_AUTOCANCEL,
2620 cb => \&IO::AIO::poll_cb, 2602 cb => \&IO::AIO::poll_cb,
2621 ); 2603 );
2622} 2604}
2623 2605
2624$WRITE_RUNTIME_WATCHER = Event->timer (
2625 reentrant => 0,
2626 data => WF_AUTOCANCEL,
2627 after => 1,
2628 interval => 10,
2629 prio => 6, # keep it lowest so it acts like a watchdog
2630 cb => Coro::unblock_sub {
2631 write_runtime
2632 or warn "ERROR: unable to write runtime file: $!";
2633 },
2634);
2635
2636END { cf::emergency_save } 2606END { cf::emergency_save }
2637 2607
26381 26081
2639 2609

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