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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 1.213 by root, Tue Feb 13 20:01:04 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
… …
1606 return if $self->players; 1609 return if $self->players;
1607 return if $self->isa ("ext::map_per_player");#d# 1610 return if $self->isa ("ext::map_per_player");#d#
1608 1611
1609 warn "resetting map ", $self->path;#d# 1612 warn "resetting map ", $self->path;#d#
1610 1613
1614 $self->in_memory (cf::MAP_SWAPPED);
1615
1616 # need to save uniques path
1617 unless ($self->{deny_save}) {
1618 my $uniq = $self->uniq_path; utf8::encode $uniq;
1619
1620 $self->_save_objects ($uniq, cf::IO_UNIQUES)
1621 if $uniq;
1622 }
1623
1611 delete $cf::MAP{$self->path}; 1624 delete $cf::MAP{$self->path};
1612 1625
1613 $self->in_memory (cf::MAP_SWAPPED);
1614 $self->clear; 1626 $self->clear;
1615 1627
1616 $_->clear_links_to ($self) for values %cf::MAP; 1628 $_->clear_links_to ($self) for values %cf::MAP;
1617 1629
1618 $self->unlink_save; 1630 $self->unlink_save;
… …
2182The parameter C<$family> should best start with the name of the extension 2194The parameter C<$family> should best start with the name of the extension
2183using it, it should be unique. 2195using it, it should be unique.
2184 2196
2185=over 4 2197=over 4
2186 2198
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 2199=item $value = cf::db_get $family => $key
2194 2200
2195Returns a single value from the database 2201Returns 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 2202
2202=item cf::db_put $family => $key => $value 2203=item cf::db_put $family => $key => $value
2203 2204
2204Stores the given C<$value> in the family hash. Updates are delayed, if you 2205Stores 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 2206
2215=cut 2207=cut
2216 2208
2217our $DB; 2209our $DB;
2218 2210
2219{ 2211sub db_init {
2212 unless ($DB) {
2213 $DB = BDB::db_create $DB_ENV;
2214
2215 cf::sync_job {
2216 eval {
2217 $DB->set_flags (BDB::CHKSUM);
2218
2219 BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2220 BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2221 cf::cleanup "db_open(db): $!" if $!;
2222 };
2223 cf::cleanup "db_open(db): $@" if $@;
2224 };
2225
2220 my $path = cf::localdir . "/database.pst"; 2226 my $path = cf::localdir . "/database.pst";
2227 if (stat $path) {
2228 cf::sync_job {
2229 my $pst = Storable::retrieve $path;
2221 2230
2222 sub db_load() { 2231 cf::db_put (board => data => $pst->{board});
2223 $DB = stat $path ? Storable::retrieve $path : { }; 2232 cf::db_put (guildrules => data => $pst->{guildrules});
2224 } 2233 cf::db_put (rent => balance => $pst->{rent}{balance});
2234 BDB::db_env_txn_checkpoint $DB_ENV;
2225 2235
2226 my $pid; 2236 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 } 2237 };
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($$;$) {
2266 if (@_ >= 3) {
2267 $DB->{$_[0]}{$_[1]} = $_[2];
2268 } else {
2269 $DB->{$_[0]} = $_[1];
2270 }
2271 db_dirty;
2272 }
2273
2274 cf::global->attach (
2275 prio => 10000,
2276 on_cleanup => sub {
2277 db_sync;
2278 }, 2238 }
2279 ); 2239 }
2240}
2241
2242sub db_get($$) {
2243 my $key = "$_[0]/$_[1]";
2244
2245 cf::sync_job {
2246 BDB::db_get $DB, undef, $key, my $data;
2247
2248 $! ? ()
2249 : Compress::LZF::sthaw $data
2250 }
2251}
2252
2253sub db_put($$$) {
2254 BDB::dbreq_pri 4;
2255 BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { };
2280} 2256}
2281 2257
2282############################################################################# 2258#############################################################################
2283# the server's init and main functions 2259# the server's init and main functions
2284 2260
… …
2320 Event::one_event; 2296 Event::one_event;
2321 })->prio (Coro::PRIO_MAX); 2297 })->prio (Coro::PRIO_MAX);
2322 }; 2298 };
2323 2299
2324 cfg_load; 2300 cfg_load;
2325 db_load; 2301 db_init;
2326 load_extensions; 2302 load_extensions;
2327 2303
2328 $TICK_WATCHER->start; 2304 $TICK_WATCHER->start;
2305 $WRITE_RUNTIME_WATCHER->start;
2329 Event::loop; 2306 Event::loop;
2330} 2307}
2331 2308
2332############################################################################# 2309#############################################################################
2333# initialisation and cleanup 2310# initialisation and cleanup
… …
2369 my $map = $cf::MAP{$path} or next; 2346 my $map = $cf::MAP{$path} or next;
2370 $map->valid or next; 2347 $map->valid or next;
2371 $map->save; 2348 $map->save;
2372 } 2349 }
2373 warn "end emergency map save\n"; 2350 warn "end emergency map save\n";
2351
2352 warn "begin emergency database checkpoint\n";
2353 BDB::db_env_txn_checkpoint $DB_ENV;
2354 warn "end emergency database checkpoint\n";
2374 }; 2355 };
2375 2356
2376 warn "leave emergency perl save\n"; 2357 warn "leave emergency perl save\n";
2358}
2359
2360sub post_cleanup {
2361 my ($make_core) = @_;
2362
2363 warn Carp::longmess "post_cleanup backtrace"
2364 if $make_core;
2377} 2365}
2378 2366
2379sub reload() { 2367sub reload() {
2380 # can/must only be called in main 2368 # can/must only be called in main
2381 if ($Coro::current != $Coro::main) { 2369 if ($Coro::current != $Coro::main) {
… …
2383 return; 2371 return;
2384 } 2372 }
2385 2373
2386 warn "reloading..."; 2374 warn "reloading...";
2387 2375
2388 warn "cancelling server ticker"; 2376 warn "entering sync_job";
2389 $TICK_WATCHER->cancel;
2390 2377
2378 cf::sync_job {
2379 cf::write_runtime;
2391 cf::emergency_save; 2380 cf::emergency_save;
2381 cf::write_runtime;
2392 2382
2393 eval { 2383 warn "syncing database to disk";
2384 BDB::db_env_txn_checkpoint $DB_ENV;
2385
2394 # if anything goes wrong in here, we should simply crash as we already saved 2386 # 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 2387
2399 warn "cancelling all WF_AUTOCANCEL watchers"; 2388 warn "cancelling all WF_AUTOCANCEL watchers";
2400 for (Event::all_watchers) { 2389 for (Event::all_watchers) {
2401 $_->cancel if $_->data & WF_AUTOCANCEL; 2390 $_->cancel if $_->data & WF_AUTOCANCEL;
2402 } 2391 }
2403 2392
2404 warn "flushing outstanding aio requests"; 2393 warn "flushing outstanding aio requests";
2405 for (;;) { 2394 for (;;) {
2395 BDB::flush;
2406 IO::AIO::flush; 2396 IO::AIO::flush;
2407 Coro::cede; 2397 Coro::cede;
2408 last unless IO::AIO::nreqs; 2398 last unless IO::AIO::nreqs || BDB::nreqs;
2409 warn "iterate..."; 2399 warn "iterate...";
2410 } 2400 }
2411 2401
2412 warn "cancelling all extension coros"; 2402 warn "cancelling all extension coros";
2413 $_->cancel for values %EXT_CORO; 2403 $_->cancel for values %EXT_CORO;
… …
2468 require cf; 2458 require cf;
2469 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt 2459 cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
2470 2460
2471 warn "loading config and database again"; 2461 warn "loading config and database again";
2472 cf::cfg_load; 2462 cf::cfg_load;
2473 cf::db_load;
2474 2463
2475 warn "loading extensions"; 2464 warn "loading extensions";
2476 cf::load_extensions; 2465 cf::load_extensions;
2477 2466
2478 warn "reattaching attachments to objects/players"; 2467 warn "reattaching attachments to objects/players";
… …
2481 reattach $_ for values %MAP; 2470 reattach $_ for values %MAP;
2482 2471
2483 warn "loading reloadable resources"; 2472 warn "loading reloadable resources";
2484 load_resources; 2473 load_resources;
2485 2474
2486 warn "restarting server ticker"; 2475 warn "leaving sync_job";
2487 2476
2488 $TICK_WATCHER->start; 2477 1
2489 }; 2478 } or do {
2490
2491 if ($@) {
2492 warn $@; 2479 warn $@;
2493 warn "error while reloading, exiting."; 2480 warn "error while reloading, exiting.";
2494 exit 1; 2481 exit 1;
2495 } 2482 };
2496 2483
2497 warn "reloaded"; 2484 warn "reloaded";
2498}; 2485};
2499 2486
2500our $RELOAD_WATCHER; # used only during reload 2487our $RELOAD_WATCHER; # used only during reload
… …
2544 $NEXT_TICK += $TICK; 2531 $NEXT_TICK += $TICK;
2545 2532
2546 $WAIT_FOR_TICK->broadcast; 2533 $WAIT_FOR_TICK->broadcast;
2547 $WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited; 2534 $WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited;
2548 2535
2549 Event::sweep;
2550 Coro::cede_notself;
2551
2552# my $AFTER = Event::time; 2536# my $AFTER = Event::time;
2553# warn $AFTER - $NOW;#d# 2537# warn $AFTER - $NOW;#d#
2554 2538
2555 # if we are delayed by four ticks or more, skip them all 2539 # if we are delayed by four ticks or more, skip them all
2556 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4; 2540 $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;
… …
2589 2573
2590 unless ($DB_ENV) { 2574 unless ($DB_ENV) {
2591 $DB_ENV = BDB::db_env_create; 2575 $DB_ENV = BDB::db_env_create;
2592 2576
2593 cf::sync_job { 2577 cf::sync_job {
2578 eval {
2594 BDB::db_env_open 2579 BDB::db_env_open
2595 $DB_ENV, 2580 $DB_ENV,
2596 $BDB_ENV_DIR, 2581 $BDB_ENV_DIR,
2597 BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN 2582 BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
2598 | BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE, 2583 | BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
2599 0666; 2584 0666;
2600 2585
2601 cf::cleanup "$!" if $!; 2586 cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!;
2602 2587
2603 $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1); 2588 $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
2604 $DB_ENV->set_lk_detect; 2589 $DB_ENV->set_lk_detect;
2590 };
2591
2592 cf::cleanup "db_env_open(db): $@" if $@;
2605 }; 2593 };
2606 } 2594 }
2607} 2595}
2608 2596
2609{ 2597{
… …
2622} 2610}
2623 2611
2624$WRITE_RUNTIME_WATCHER = Event->timer ( 2612$WRITE_RUNTIME_WATCHER = Event->timer (
2625 reentrant => 0, 2613 reentrant => 0,
2626 data => WF_AUTOCANCEL, 2614 data => WF_AUTOCANCEL,
2615 parked => 1,
2627 after => 1, 2616 after => 1,
2628 interval => 10, 2617 interval => 10,
2629 prio => 6, # keep it lowest so it acts like a watchdog 2618 prio => 6, # keep it lowest so it acts like a watchdog
2630 cb => Coro::unblock_sub { 2619 cb => sub {
2620 $TICK_WATCHER->is_active or cf::cleanup "mainloop frozen but runtime active", 1;
2621
2622 Coro::async_pool {
2631 write_runtime 2623 write_runtime
2632 or warn "ERROR: unable to write runtime file: $!"; 2624 or warn "ERROR: unable to write runtime file: $!";
2625 };
2633 }, 2626 },
2634); 2627);
2635 2628
2636END { cf::emergency_save } 2629END { cf::emergency_save }
2637 2630

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