--- deliantra/server/lib/cf.pm 2006/12/31 21:02:05 1.108 +++ deliantra/server/lib/cf.pm 2007/04/02 18:04:46 1.230 @@ -6,54 +6,81 @@ use Symbol; use List::Util; use Storable; +use Event; use Opcode; use Safe; use Safe::Hole; -use Coro 3.3; +use Coro 3.52 (); +use Coro::State; use Coro::Event; use Coro::Timer; use Coro::Signal; use Coro::Semaphore; use Coro::AIO; +use BDB (); +use Data::Dumper; use Digest::MD5; use Fcntl; -use IO::AIO 2.31 (); use YAML::Syck (); +use IO::AIO 2.32 (); use Time::HiRes; +use Compress::LZF; -use Event; $Event::Eval = 1; # no idea why this is required, but it is +# configure various modules to our taste +# +Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator +Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later + +$Event::Eval = 1; # no idea why this is required, but it is # work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode? $YAML::Syck::ImplicitUnicode = 1; -$Coro::main->prio (2); # run main coroutine ("the server") with very high priority +$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload our %COMMAND = (); our %COMMAND_TIME = (); + +our @EXTS = (); # list of extension package names our %EXTCMD = (); +our %EXT_CORO = (); # coroutines bound to extensions +our %EXT_MAP = (); # pluggable maps +our $RELOAD; # number of reloads so far our @EVENT; our $LIBDIR = datadir . "/ext"; our $TICK = MAX_TIME * 1e-6; our $TICK_WATCHER; +our $AIO_POLL_WATCHER; +our $NEXT_RUNTIME_WRITE; # when should the runtime file be written our $NEXT_TICK; our $NOW; +our $USE_FSYNC = 1; # use fsync to write maps - default off + +our $BDB_POLL_WATCHER; +our $DB_ENV; our %CFG; our $UPTIME; $UPTIME ||= time; our $RUNTIME; -our %MAP; # all maps -our $LINK_MAP; # the special {link} map -our $FREEZE; +our %PLAYER; # all users +our %MAP; # all maps +our $LINK_MAP; # the special {link} map, which is always available our $RANDOM_MAPS = cf::localdir . "/random"; -our %EXT_CORO; +our $BDB_ENV_DIR = cf::localdir . "/db"; + +our $WAIT_FOR_TICK; $WAIT_FOR_TICK ||= new Coro::Signal; +our $WAIT_FOR_TICK_ONE; $WAIT_FOR_TICK_ONE ||= new Coro::Signal; + +# used to convert map paths into valid unix filenames by replacing / by ∕ +our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons binmode STDOUT; binmode STDERR; @@ -70,9 +97,11 @@ mkdir cf::localdir . "/" . cf::tmpdir; mkdir cf::localdir . "/" . cf::uniquedir; mkdir $RANDOM_MAPS; +mkdir $BDB_ENV_DIR; + +our $EMERGENCY_POSITION; -# a special map that is always available -our $LINK_MAP; +sub cf::map::normalise; ############################################################################# @@ -107,6 +136,13 @@ Configuration for the server, loaded from C, or from wherever your confdir points to. +=item $cf::WAIT_FOR_TICK, $cf::WAIT_FOR_TICK_ONE + +These are Coro::Signal objects that are C<< ->broadcast >> (WAIT_FOR_TICK) +or C<< ->send >> (WAIT_FOR_TICK_ONE) on after normal server tick +processing has been done. Call C<< ->wait >> on them to maximise the +window of cpu time available, or simply to synchronise to the server tick. + =back =cut @@ -119,7 +155,7 @@ $msg .= "\n" unless $msg =~ /\n$/; - LOG llevError, "cfperl: $msg"; + LOG llevError, $msg; }; } @@ -147,40 +183,105 @@ warn "error in event callback: @_"; }; -my %ext_pkg; -my @exts; -my @hook; - =head2 UTILITY FUNCTIONS =over 4 +=item dumpval $ref + =cut -use JSON::Syck (); # TODO# replace by JSON::PC once working +sub dumpval { + eval { + local $SIG{__DIE__}; + my $d; + if (1) { + $d = new Data::Dumper([$_[0]], ["*var"]); + $d->Terse(1); + $d->Indent(2); + $d->Quotekeys(0); + $d->Useqq(1); + #$d->Bless(...); + $d->Seen($_[1]) if @_ > 1; + $d = $d->Dump(); + } + $d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge; + $d + } || "[unable to dump $_[0]: '$@']"; +} + +use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working =item $ref = cf::from_json $json Converts a JSON string into the corresponding perl data structure. +=item $json = cf::to_json $ref + +Converts a perl data structure into its JSON representation. + +=item cf::lock_wait $string + +Wait until the given lock is available. See cf::lock_acquire. + +=item my $lock = cf::lock_acquire $string + +Wait until the given lock is available and then acquires it and returns +a Coro::guard object. If the guard object gets destroyed (goes out of scope, +for example when the coroutine gets canceled), the lock is automatically +returned. + +Lock names should begin with a unique identifier (for example, cf::map::find +uses map_find and cf::map::load uses map_load). + =cut -sub from_json($) { - $JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs - JSON::Syck::Load $_[0] +our %LOCK; + +sub lock_wait($) { + my ($key) = @_; + + # wait for lock, if any + while ($LOCK{$key}) { + push @{ $LOCK{$key} }, $Coro::current; + Coro::schedule; + } } -=item $json = cf::to_json $ref +sub lock_acquire($) { + my ($key) = @_; -Converts a perl data structure into its JSON representation. + # wait, to be sure we are not locked + lock_wait $key; -=cut + $LOCK{$key} = []; -sub to_json($) { - $JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs - JSON::Syck::Dump $_[0] + Coro::guard { + # wake up all waiters, to be on the safe side + $_->ready for @{ delete $LOCK{$key} }; + } } +sub freeze_mainloop { + return unless $TICK_WATCHER->is_active; + + my $guard = Coro::guard { + $TICK_WATCHER->start; + }; + $TICK_WATCHER->stop; + $guard +} + +=item cf::async { BLOCK } + +Currently the same as Coro::async_pool, meaning you cannot use +C, C or other gimmicks on these coroutines. The only +thing you are allowed to do is call C on it. + +=cut + +BEGIN { *async = \&Coro::async_pool } + =item cf::sync_job { BLOCK } The design of crossfire+ requires that the main coro ($Coro::main) is @@ -197,47 +298,46 @@ sub sync_job(&) { my ($job) = @_; - my $busy = 1; - my @res; - - # TODO: use suspend/resume instead - local $FREEZE = 1; - - my $coro = Coro::async { - @res = eval { $job->() }; - warn $@ if $@; - undef $busy; - }; - if ($Coro::current == $Coro::main) { - $coro->prio (Coro::PRIO_MAX); + # this is the main coro, too bad, we have to block + # till the operation succeeds, freezing the server :/ + + # TODO: use suspend/resume instead + # (but this is cancel-safe) + my $freeze_guard = freeze_mainloop; + + my $busy = 1; + my @res; + + (async { + @res = eval { $job->() }; + warn $@ if $@; + undef $busy; + })->prio (Coro::PRIO_MAX); + while ($busy) { - Coro::cede_notself; - Event::one_event unless Coro::nready; + Coro::cede or Event::one_event; } + + wantarray ? @res : $res[0] } else { - $coro->join; + # we are in another coroutine, how wonderful, everything just works + + $job->() } - - wantarray ? @res : $res[0] } -=item $coro = cf::coro { BLOCK } +=item $coro = cf::async_ext { BLOCK } -Creates and returns a new coro. This coro is automcatially being canceled -when the extension calling this is being unloaded. +Like async, but this coro is automatically being canceled when the +extension calling this is being unloaded. =cut -sub coro(&) { +sub async_ext(&) { my $cb = shift; - my $coro; $coro = async { - eval { - $cb->(); - }; - warn $@ if $@; - }; + my $coro = &Coro::async ($cb); $coro->on_destroy (sub { delete $EXT_CORO{$coro+0}; @@ -248,15 +348,21 @@ } sub write_runtime { + my $guard = cf::lock_acquire "write_runtime"; + my $runtime = cf::localdir . "/runtime"; my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644 or return; - my $value = $cf::RUNTIME; + my $value = $cf::RUNTIME + 90 + 10; + # 10 is the runtime save interval, for a monotonic clock + # 60 allows for the watchdog to kill the server. + (aio_write $fh, 0, (length $value), $value, 0) <= 0 and return; + # always fsync - this file is important aio_fsync $fh and return; @@ -269,112 +375,20 @@ 1 } -=back - -=cut - -############################################################################# - -package cf::path; - -sub new { - my ($class, $path, $base) = @_; - - my $self = bless { }, $class; - - if ($path =~ s{^\?random/}{}) { - $self->{random} = cf::from_json $path; - } else { - if ($path =~ s{^~([^/]+)?}{}) { - $self->{user_rel} = 1; - - if (defined $1) { - $self->{user} = $1; - } elsif ($base =~ m{^~([^/]+)/}) { - $self->{user} = $1; - } else { - warn "cannot resolve user-relative path without user <$path,$base>\n"; - } - } elsif ($path =~ /^\//) { - # already absolute - } else { - $base =~ s{[^/]+/?$}{}; - return $class->new ("$base/$path"); - } - - for ($path) { - redo if s{/\.?/}{/}; - redo if s{/[^/]+/\.\./}{/}; - } - } - - $self->{path} = $path; - - $self -} - -# the name / primary key / in-game path -sub as_string { - my ($self) = @_; - - $self->{user_rel} ? "~$self->{user}$self->{path}" - : $self->{random} ? "?random/$self->{path}" - : $self->{path} -} - -# the displayed name, this is a one way mapping -sub visible_name { - my ($self) = @_; - - $self->{random} ? "?random/$self->{random}{origin_map}+$self->{random}{origin_x}+$self->{random}{origin_y}/$self->{random}{dungeon_level}" - : $self->as_string -} - -# escape the /'s in the path -sub _escaped_path { - # ∕ is U+2215 - (my $path = $_[0]{path}) =~ s/\//∕/g; - $path -} - -# the original (read-only) location -sub load_path { - my ($self) = @_; - - sprintf "%s/%s/%s", cf::datadir, cf::mapdir, $self->{path} -} - -# the temporary/swap location -sub save_path { - my ($self) = @_; - - $self->{user_rel} ? sprintf "%s/%s/%s/%s", cf::localdir, cf::playerdir, $self->{user}, $self->_escaped_path - : $self->{random} ? sprintf "%s/%s", $RANDOM_MAPS, Digest::MD5::md5_hex $self->{path} - : sprintf "%s/%s/%s", cf::localdir, cf::tmpdir, $self->_escaped_path -} - -# the unique path, might be eq to save_path -sub uniq_path { - my ($self) = @_; +=item cf::datalog type => key => value, ... - $self->{user_rel} || $self->{random} - ? undef - : sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $self->_escaped_path -} +Log a datalog packet of the given type with the given key-value pairs. -# return random map parameters, or undef -sub random_map_params { - my ($self) = @_; +=cut - $self->{random} +sub datalog($@) { + my ($type, %kv) = @_; + warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type }); } -# this is somewhat ugly, but style maps do need special treatment -sub is_style_map { - $_[0]{path} =~ m{^/styles/} -} +=back -package cf; +=cut ############################################################################# @@ -510,6 +524,12 @@ my %attachment; +sub cf::attachable::thawer_merge { + # simply override everything except _meta + local $_[0]{_meta}; + %{$_[0]} = %{$_[1]}; +} + sub _attach_cb($$$$) { my ($registry, $event, $prio, $cb) = @_; @@ -691,6 +711,8 @@ # basically do the same as instantiate, without calling instantiate my ($obj) = @_; + bless $obj, ref $obj; # re-bless in case extensions have been reloaded + my $registry = $obj->registry; @$registry = (); @@ -746,7 +768,7 @@ if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) { chmod SAVE_MODE, $fh; aio_write $fh, 0, (length $$rdata), $$rdata, 0; - aio_fsync $fh; + aio_fsync $fh if $cf::USE_FSYNC; close $fh; if (@$objs) { @@ -754,7 +776,7 @@ chmod SAVE_MODE, $fh; my $data = Storable::nfreeze { version => 1, objs => $objs }; aio_write $fh, 0, (length $data), $data, 0; - aio_fsync $fh; + aio_fsync $fh if $cf::USE_FSYNC; close $fh; aio_rename "$filename.pst~", "$filename.pst"; } @@ -792,9 +814,11 @@ unless (aio_stat "$filename.pst") { (aio_load "$filename.pst", $av) >= 0 or return; - $av = eval { (Storable::thaw <$av>)->{objs} }; + $av = eval { (Storable::thaw $av)->{objs} }; } + warn sprintf "loading %s (%d)\n", + $filename, length $data, scalar @{$av || []};#d# return ($data, $av); } @@ -829,10 +853,7 @@ sub register_extcmd { my ($name, $cb) = @_; - my $caller = caller; - #warn "registering extcmd '$name' to '$caller'"; - - $EXTCMD{$name} = [$cb, $caller]; + $EXTCMD{$name} = $cb; } cf::player->attach ( @@ -855,7 +876,7 @@ if (ref $msg) { if (my $cb = $EXTCMD{$msg->{msgtype}}) { - if (my %reply = $cb->[0]->($pl, $msg)) { + if (my %reply = $cb->($pl, $msg)) { $pl->ext_reply ($msg->{msgid}, %reply); } } @@ -867,12 +888,6 @@ }, ); -sub register { - my ($base, $pkg) = @_; - - #TODO -} - sub load_extension { my ($path) = @_; @@ -882,7 +897,7 @@ $pkg =~ s/[^[:word:]]/_/g; $pkg = "ext::$pkg"; - warn "loading '$path' into '$pkg'\n"; + warn "... loading '$path' into '$pkg'\n"; open my $fh, "<:utf8", $path or die "$path: $!"; @@ -893,137 +908,813 @@ . (do { local $/; <$fh> }) . "\n};\n1"; - eval $source - or die $@ ? "$path: $@\n" - : "extension disabled.\n"; + unless (eval $source) { + my $msg = $@ ? "$path: $@\n" + : "extension disabled.\n"; + if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match + warn $@; + warn "mandatory extension failed to load, exiting.\n"; + exit 1; + } + die $@; + } + + push @EXTS, $pkg; +} + +sub load_extensions { + for my $ext (<$LIBDIR/*.ext>) { + next unless -r $ext; + eval { + load_extension $ext; + 1 + } or warn "$ext not loaded: $@"; + } +} + +############################################################################# + +=head2 CORE EXTENSIONS + +Functions and methods that extend core crossfire objects. + +=cut + +package cf::player; + +use Coro::AIO; + +=head3 cf::player + +=over 4 + +=item cf::player::find $login - push @exts, $pkg; - $ext_pkg{$base} = $pkg; +Returns the given player object, loading it if necessary (might block). -# no strict 'refs'; -# @{"$pkg\::ISA"} = ext::; +=cut - register $base, $pkg; +sub playerdir($) { + cf::localdir + . "/" + . cf::playerdir + . "/" + . (ref $_[0] ? $_[0]->ob->name : $_[0]) } -sub unload_extension { - my ($pkg) = @_; +sub path($) { + my $login = ref $_[0] ? $_[0]->ob->name : $_[0]; - warn "removing extension $pkg\n"; + (playerdir $login) . "/$login.pl" +} - # remove hooks - #TODO -# for my $idx (0 .. $#PLUGIN_EVENT) { -# delete $hook[$idx]{$pkg}; -# } +sub find_active($) { + $cf::PLAYER{$_[0]} + and $cf::PLAYER{$_[0]}->active + and $cf::PLAYER{$_[0]} +} - # remove commands - for my $name (keys %COMMAND) { - my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} }; +sub exists($) { + my ($login) = @_; - if (@cb) { - $COMMAND{$name} = \@cb; - } else { - delete $COMMAND{$name}; + $cf::PLAYER{$login} + or cf::sync_job { !aio_stat path $login } +} + +sub find($) { + return $cf::PLAYER{$_[0]} || do { + my $login = $_[0]; + + my $guard = cf::lock_acquire "user_find:$login"; + + $cf::PLAYER{$_[0]} || do { + my $pl = load_pl path $login + or return; + $cf::PLAYER{$login} = $pl } } +} + +sub save($) { + my ($pl) = @_; + + return if $pl->{deny_save}; + + my $path = path $pl; + my $guard = cf::lock_acquire "user_save:$path"; + + return if $pl->{deny_save}; + + aio_mkdir playerdir $pl, 0770; + $pl->{last_save} = $cf::RUNTIME; + + $pl->save_pl ($path); + Coro::cede; +} + +sub new($) { + my ($login) = @_; + + my $self = create; + + $self->ob->name ($login); + $self->{deny_save} = 1; + + $cf::PLAYER{$login} = $self; + + $self +} + +=item $pl->quit_character + +Nukes the player without looking back. If logged in, the connection will +be destroyed. May block for a long time. + +=cut + +sub quit_character { + my ($pl) = @_; + + my $name = $pl->ob->name; + + $pl->{deny_save} = 1; + $pl->password ("*"); # this should lock out the player until we nuked the dir + + $pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active; + $pl->deactivate; + $pl->invoke (cf::EVENT_PLAYER_QUIT); + $pl->ns->destroy if $pl->ns; + + my $path = playerdir $pl; + my $temp = "$path~$cf::RUNTIME~deleting~"; + aio_rename $path, $temp; + delete $cf::PLAYER{$pl->ob->name}; + $pl->destroy; + + my $prefix = qr<^~\Q$name\E/>; + + # nuke player maps + $cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP; + + IO::AIO::aio_rmtree $temp; +} + +=item $pl->kick + +Kicks a player out of the game. This destroys the connection. + +=cut + +sub kick { + my ($pl, $kicker) = @_; + + $pl->invoke (cf::EVENT_PLAYER_KICK, $kicker); + $pl->killer ("kicked"); + $pl->ns->destroy; +} + +=item cf::player::list_logins + +Returns am arrayref of all valid playernames in the system, can take a +while and may block, so not sync_job-capable, ever. + +=cut + +sub list_logins { + my $dirs = aio_readdir cf::localdir . "/" . cf::playerdir + or return []; + + my @logins; + + for my $login (@$dirs) { + my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next; + aio_read $fh, 0, 512, my $buf, 0 or next; + $buf !~ /^password -------------$/m or next; # official not-valid tag + + utf8::decode $login; + push @logins, $login; + } + + \@logins +} + +=item $player->maps + +Returns an arrayref of map paths that are private for this +player. May block. + +=cut - # remove extcmds - for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) { - delete $EXTCMD{$name}; +sub maps($) { + my ($pl) = @_; + + $pl = ref $pl ? $pl->ob->name : $pl; + + my $files = aio_readdir playerdir $pl + or return; + + my @paths; + + for (@$files) { + utf8::decode $_; + next if /\.(?:pl|pst)$/; + next unless /^$PATH_SEP/o; + + push @paths, cf::map::normalise "~$pl/$_"; } - if (my $cb = $pkg->can ("unload")) { - eval { - $cb->($pkg); - 1 - } or warn "$pkg unloaded, but with errors: $@"; + \@paths +} + +=item $player->ext_reply ($msgid, $msgtype, %msg) + +Sends an ext reply to the player. + +=cut + +sub ext_reply($$$%) { + my ($self, $id, %msg) = @_; + + $msg{msgid} = $id; + + $self->send ("ext " . cf::to_json \%msg); +} + +package cf; + +=back + + +=head3 cf::map + +=over 4 + +=cut + +package cf::map; + +use Fcntl; +use Coro::AIO; + +use overload + '""' => \&as_string, + fallback => 1; + +our $MAX_RESET = 3600; +our $DEFAULT_RESET = 3000; + +sub generate_random_map { + my ($self, $rmp) = @_; + # mit "rum" bekleckern, nicht + $self->_create_random_map ( + $rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle}, + $rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle}, + $rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map}, + $rmp->{exit_on_final_map}, + $rmp->{xsize}, $rmp->{ysize}, + $rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3}, + $rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase}, + $rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation}, + $rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp}, + $rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used}, + (cf::region::find $rmp->{region}), $rmp->{custom} + ) +} + +=item cf::map->register ($regex, $prio) + +Register a handler for the map path matching the given regex at the +givne priority (higher is better, built-in handlers have priority 0, the +default). + +=cut + +sub register { + my (undef, $regex, $prio) = @_; + my $pkg = caller; + + no strict; + push @{"$pkg\::ISA"}, __PACKAGE__; + + $EXT_MAP{$pkg} = [$prio, qr<$regex>]; +} + +# also paths starting with '/' +$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}]; + +sub thawer_merge { + my ($self, $merge) = @_; + + # we have to keep some variables in memory intact + local $self->{path}; + local $self->{load_path}; + local $self->{deny_save}; + local $self->{deny_reset}; + + $self->SUPER::thawer_merge ($merge); +} + +sub normalise { + my ($path, $base) = @_; + + $path = "$path"; # make sure its a string + + $path =~ s/\.map$//; + + # map plan: + # + # /! non-realised random map exit (special hack!) + # {... are special paths that are not being touched + # ?xxx/... are special absolute paths + # ?random/... random maps + # /... normal maps + # ~user/... per-player map of a specific user + + $path =~ s/$PATH_SEP/\//go; + + # treat it as relative path if it starts with + # something that looks reasonable + if ($path =~ m{^(?:\./|\.\./|\w)}) { + $base or Carp::carp "normalise called with relative path and no base: '$path'"; + + $base =~ s{[^/]+/?$}{}; + $path = "$base/$path"; } - Symbol::delete_package $pkg; + for ($path) { + redo if s{//}{/}; + redo if s{/\.?/}{/}; + redo if s{/[^/]+/\.\./}{/}; + } + + $path } -sub load_extensions { - for my $ext (<$LIBDIR/*.ext>) { - next unless -r $ext; - eval { - load_extension $ext; - 1 - } or warn "$ext not loaded: $@"; +sub new_from_path { + my (undef, $path, $base) = @_; + + return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object + + $path = normalise $path, $base; + + for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) { + if ($path =~ $EXT_MAP{$pkg}[1]) { + my $self = bless cf::map::new, $pkg; + $self->{path} = $path; $self->path ($path); + $self->init; # pass $1 etc. + return $self; + } } + + Carp::carp "unable to resolve path '$path' (base '$base')."; + () } -############################################################################# -# load/save/clean perl data associated with a map +sub init { + my ($self) = @_; + + $self +} + +sub as_string { + my ($self) = @_; + + "$self->{path}" +} + +# the displayed name, this is a one way mapping +sub visible_name { + &as_string +} + +# the original (read-only) location +sub load_path { + my ($self) = @_; + + sprintf "%s/%s/%s.map", cf::datadir, cf::mapdir, $self->{path} +} + +# the temporary/swap location +sub save_path { + my ($self) = @_; + + (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g; + sprintf "%s/%s/%s.map", cf::localdir, cf::tmpdir, $path +} + +# the unique path, undef == no special unique path +sub uniq_path { + my ($self) = @_; + + (my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g; + sprintf "%s/%s/%s", cf::localdir, cf::uniquedir, $path +} + +# and all this just because we cannot iterate over +# all maps in C++... +sub change_all_map_light { + my ($change) = @_; + + $_->change_map_light ($change) + for grep $_->outdoor, values %cf::MAP; +} + +sub unlink_save { + my ($self) = @_; + + utf8::encode (my $save = $self->save_path); + IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save; + IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst"; +} + +sub load_header_from($) { + my ($self, $path) = @_; + + utf8::encode $path; + #aio_open $path, O_RDONLY, 0 + # or return; + + $self->_load_header ($path) + or return; + + $self->{load_path} = $path; + + 1 +} + +sub load_header_orig { + my ($self) = @_; + + $self->load_header_from ($self->load_path) +} + +sub load_header_temp { + my ($self) = @_; + + $self->load_header_from ($self->save_path) +} + +sub prepare_temp { + my ($self) = @_; -*cf::mapsupport::on_clean = sub { + $self->last_access ((delete $self->{last_access}) + || $cf::RUNTIME); #d# + # safety + $self->{instantiate_time} = $cf::RUNTIME + if $self->{instantiate_time} > $cf::RUNTIME; +} + +sub prepare_orig { + my ($self) = @_; + + $self->{load_original} = 1; + $self->{instantiate_time} = $cf::RUNTIME; + $self->last_access ($cf::RUNTIME); + $self->instantiate; +} + +sub load_header { + my ($self) = @_; + + if ($self->load_header_temp) { + $self->prepare_temp; + } else { + $self->load_header_orig + or return; + $self->prepare_orig; + } + + 1 +} + +sub find; +sub find { + my ($path, $origin) = @_; + + $path = normalise $path, $origin && $origin->path; + + cf::lock_wait "map_find:$path"; + + $cf::MAP{$path} || do { + my $guard = cf::lock_acquire "map_find:$path"; + my $map = new_from_path cf::map $path + or return; + + $map->{last_save} = $cf::RUNTIME; + + $map->load_header + or return; + + if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?) + # doing this can freeze the server in a sync job, obviously + #$cf::WAIT_FOR_TICK->wait; + $map->reset; + undef $guard; + return find $path; + } + + $cf::MAP{$path} = $map + } +} + +sub pre_load { } +sub post_load { } + +sub load { + my ($self) = @_; + + local $self->{deny_reset} = 1; # loading can take a long time + + my $path = $self->{path}; + my $guard = cf::lock_acquire "map_load:$path"; + + return if $self->in_memory != cf::MAP_SWAPPED; + + $self->in_memory (cf::MAP_LOADING); + + $self->alloc; + + $self->pre_load; + + $self->_load_objects ($self->{load_path}, 1) + or return; + + $self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1) + if delete $self->{load_original}; + + if (my $uniq = $self->uniq_path) { + utf8::encode $uniq; + if (aio_open $uniq, O_RDONLY, 0) { + $self->clear_unique_items; + $self->_load_objects ($uniq, 0); + } + } + + Coro::cede; + + # now do the right thing for maps + $self->link_multipart_objects; + + unless ($self->{deny_activate}) { + $self->decay_objects; + $self->fix_auto_apply; + $self->update_buttons; + Coro::cede; + $self->set_darkness_map; + $self->difficulty ($self->estimate_difficulty) + unless $self->difficulty; + Coro::cede; + $self->activate; + } + + $self->post_load; + + $self->in_memory (cf::MAP_IN_MEMORY); +} + +sub customise_for { + my ($self, $ob) = @_; + + return find "~" . $ob->name . "/" . $self->{path} + if $self->per_player; + + $self +} + +# find and load all maps in the 3x3 area around a map +sub load_diag { my ($map) = @_; - my $path = $map->tmpname; - defined $path or return; + my @diag; # diagonal neighbours - unlink "$path.pst"; -}; + for (0 .. 3) { + my $neigh = $map->tile_path ($_) + or next; + $neigh = find $neigh, $map + or next; + $neigh->load; -cf::map->attach (prio => -10000, package => cf::mapsupport::); + push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh], + [$neigh->tile_path (($_ + 1) % 4), $neigh]; + } -############################################################################# -# load/save perl data associated with player->ob objects + for (@diag) { + my $neigh = find @$_ + or next; + $neigh->load; + } +} + +sub find_sync { + my ($path, $origin) = @_; -sub all_objects(@) { - @_, map all_objects ($_->inv), @_ + cf::sync_job { find $path, $origin } } -# TODO: compatibility cruft, remove when no longer needed -cf::player->attach ( - on_load => sub { - my ($pl, $path) = @_; +sub do_load_sync { + my ($map) = @_; - for my $o (all_objects $pl->ob) { - if (my $value = $o->get_ob_key_value ("_perl_data")) { - $o->set_ob_key_value ("_perl_data"); + cf::sync_job { $map->load }; +} + +our %MAP_PREFETCH; +our $MAP_PREFETCHER = undef; + +sub find_async { + my ($path, $origin) = @_; + + $path = normalise $path, $origin && $origin->{path}; + + if (my $map = $cf::MAP{$path}) { + return $map if $map->in_memory == cf::MAP_IN_MEMORY; + } - %$o = %{ Storable::thaw pack "H*", $value }; + undef $MAP_PREFETCH{$path}; + $MAP_PREFETCHER ||= cf::async { + while (%MAP_PREFETCH) { + for my $path (keys %MAP_PREFETCH) { + my $map = find $path + or next; + $map->load; + + delete $MAP_PREFETCH{$path}; } } - }, -); + undef $MAP_PREFETCHER; + }; + $MAP_PREFETCHER->prio (6); -############################################################################# + () +} -=head2 CORE EXTENSIONS +sub save { + my ($self) = @_; -Functions and methods that extend core crossfire objects. + my $lock = cf::lock_acquire "map_data:" . $self->path; -=head3 cf::player + $self->{last_save} = $cf::RUNTIME; -=over 4 + return unless $self->dirty; + + my $save = $self->save_path; utf8::encode $save; + my $uniq = $self->uniq_path; utf8::encode $uniq; + + $self->{load_path} = $save; + + return if $self->{deny_save}; + + local $self->{last_access} = $self->last_access;#d# -=item cf::player::exists $login + cf::async { + $_->contr->save for $self->players; + }; + + if ($uniq) { + $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS); + $self->_save_objects ($uniq, cf::IO_UNIQUES); + } else { + $self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES); + } +} + +sub swap_out { + my ($self) = @_; + + # save first because save cedes + $self->save; + + my $lock = cf::lock_acquire "map_data:" . $self->path; + + return if $self->players; + return if $self->in_memory != cf::MAP_IN_MEMORY; + return if $self->{deny_save}; + + $self->clear; + $self->in_memory (cf::MAP_SWAPPED); +} + +sub reset_at { + my ($self) = @_; + + # TODO: safety, remove and allow resettable per-player maps + return 1e99 if $self->isa ("ext::map_per_player");#d# + return 1e99 if $self->{deny_reset}; + + my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access; + my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET; + + $time + $to +} + +sub should_reset { + my ($self) = @_; + + $self->reset_at <= $cf::RUNTIME +} + +sub reset { + my ($self) = @_; + + my $lock = cf::lock_acquire "map_data:$self->{path}"; + + return if $self->players; + return if $self->isa ("ext::map_per_player");#d# + + warn "resetting map ", $self->path;#d# + + $self->in_memory (cf::MAP_SWAPPED); + + # need to save uniques path + unless ($self->{deny_save}) { + my $uniq = $self->uniq_path; utf8::encode $uniq; + + $self->_save_objects ($uniq, cf::IO_UNIQUES) + if $uniq; + } + + delete $cf::MAP{$self->path}; + + $self->clear; + + $_->clear_links_to ($self) for values %cf::MAP; + + $self->unlink_save; + $self->destroy; +} + +my $nuke_counter = "aaaa"; + +sub nuke { + my ($self) = @_; + + delete $cf::MAP{$self->path}; + + $self->unlink_save; + + bless $self, "cf::map"; + delete $self->{deny_reset}; + $self->{deny_save} = 1; + $self->reset_timeout (1); + $self->path ($self->{path} = "{nuke}/" . ($nuke_counter++)); -Returns true when the given account exists. + $cf::MAP{$self->path} = $self; + + $self->reset; # polite request, might not happen +} + +=item cf::map::unique_maps + +Returns an arrayref of paths of all shared maps that have +instantiated unique items. May block. =cut -sub cf::player::exists($) { - cf::player::find $_[0] - or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2; +sub unique_maps() { + my $files = aio_readdir cf::localdir . "/" . cf::uniquedir + or return; + + my @paths; + + for (@$files) { + utf8::decode $_; + next if /\.pst$/; + next unless /^$PATH_SEP/o; + + push @paths, cf::map::normalise $_; + } + + \@paths } -=item $player->ext_reply ($msgid, $msgtype, %msg) +package cf; -Sends an ext reply to the player. +=back + +=head3 cf::object =cut -sub cf::player::ext_reply($$$%) { - my ($self, $id, %msg) = @_; +package cf::object; - $msg{msgid} = $id; +=over 4 + +=item $ob->inv_recursive + +Returns the inventory of the object _and_ their inventories, recursively. + +=cut + +sub inv_recursive_; +sub inv_recursive_ { + map { $_, inv_recursive_ $_->inv } @_ +} - $self->send ("ext " . to_json \%msg); +sub inv_recursive { + inv_recursive_ inv $_[0] } +package cf; + =back =head3 cf::object::player @@ -1070,6 +1761,227 @@ : $cf::CFG{"may_$access"}) } +=item $player_object->enter_link + +Freezes the player and moves him/her to a special map (C<{link}>). + +The player should be reasonably safe there for short amounts of time. You +I call C as soon as possible, though. + +Will never block. + +=item $player_object->leave_link ($map, $x, $y) + +Moves the player out of the special C<{link}> map onto the specified +map. If the map is not valid (or omitted), the player will be moved back +to the location he/she was before the call to C, or, if that +fails, to the emergency map position. + +Might block. + +=cut + +sub link_map { + unless ($LINK_MAP) { + $LINK_MAP = cf::map::find "{link}" + or cf::cleanup "FATAL: unable to provide {link} map, exiting."; + $LINK_MAP->load; + } + + $LINK_MAP +} + +sub cf::object::player::enter_link { + my ($self) = @_; + + $self->deactivate_recursive; + + return if UNIVERSAL::isa $self->map, "ext::map_link"; + + $self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y] + if $self->map; + + $self->enter_map ($LINK_MAP || link_map, 10, 10); +} + +sub cf::object::player::leave_link { + my ($self, $map, $x, $y) = @_; + + my $link_pos = delete $self->{_link_pos}; + + unless ($map) { + # restore original map position + ($map, $x, $y) = @{ $link_pos || [] }; + $map = cf::map::find $map; + + unless ($map) { + ($map, $x, $y) = @$EMERGENCY_POSITION; + $map = cf::map::find $map + or die "FATAL: cannot load emergency map\n"; + } + } + + ($x, $y) = (-1, -1) + unless (defined $x) && (defined $y); + + # use -1 or undef as default coordinates, not 0, 0 + ($x, $y) = ($map->enter_x, $map->enter_y) + if $x <=0 && $y <= 0; + + $map->load; + $map->load_diag; + + return unless $self->contr->active; + $self->activate_recursive; + + local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext + $self->enter_map ($map, $x, $y); +} + +cf::player->attach ( + on_logout => sub { + my ($pl) = @_; + + # abort map switching before logout + if ($pl->ob->{_link_pos}) { + cf::sync_job { + $pl->ob->leave_link + }; + } + }, + on_login => sub { + my ($pl) = @_; + + # try to abort aborted map switching on player login :) + # should happen only on crashes + if ($pl->ob->{_link_pos}) { + $pl->ob->enter_link; + (async { + $pl->ob->reply (undef, + "There was an internal problem at your last logout, " + . "the server will try to bring you to your intended destination in a second.", + cf::NDI_RED); + # we need this sleep as the login has a concurrent enter_exit running + # and this sleep increases chances of the player not ending up in scorn + Coro::Timer::sleep 1; + $pl->ob->leave_link; + })->prio (2); + } + }, +); + +=item $player_object->goto ($path, $x, $y) + +=cut + +sub cf::object::player::goto { + my ($self, $path, $x, $y) = @_; + + $self->enter_link; + + (async { + my $map = eval { + my $map = cf::map::find $path; + $map = $map->customise_for ($self) if $map; + $map + } or + $self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED); + + $self->leave_link ($map, $x, $y); + })->prio (1); +} + +=item $player_object->enter_exit ($exit_object) + +=cut + +sub parse_random_map_params { + my ($spec) = @_; + + my $rmp = { # defaults + xsize => (cf::rndm 15, 40), + ysize => (cf::rndm 15, 40), + symmetry => (cf::rndm 1, cf::SYMMETRY_XY), + #layout => string, + }; + + for (split /\n/, $spec) { + my ($k, $v) = split /\s+/, $_, 2; + + $rmp->{lc $k} = $v if (length $k) && (length $v); + } + + $rmp +} + +sub prepare_random_map { + my ($exit) = @_; + + my $guard = cf::lock_acquire "exit_prepare:$exit"; + + # all this does is basically replace the /! path by + # a new random map path (?random/...) with a seed + # that depends on the exit object + + my $rmp = parse_random_map_params $exit->msg; + + if ($exit->map) { + $rmp->{region} = $exit->region->name; + $rmp->{origin_map} = $exit->map->path; + $rmp->{origin_x} = $exit->x; + $rmp->{origin_y} = $exit->y; + } + + $rmp->{random_seed} ||= $exit->random_seed; + + my $data = cf::to_json $rmp; + my $md5 = Digest::MD5::md5_hex $data; + my $meta = "$cf::RANDOM_MAPS/$md5.meta"; + + if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) { + aio_write $fh, 0, (length $data), $data, 0; + undef $fh; + aio_rename "$meta~", $meta; + + $exit->slaying ("?random/$md5"); + $exit->msg (undef); + } +} + +sub cf::object::player::enter_exit { + my ($self, $exit) = @_; + + return unless $self->type == cf::PLAYER; + + if ($exit->slaying eq "/!") { + #TODO: this should de-fi-ni-te-ly not be a sync-job + cf::sync_job { prepare_random_map $exit }; + } + + my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path; + my $hp = $exit->stats->hp; + my $sp = $exit->stats->sp; + + $self->enter_link; + + (async { + $self->deactivate_recursive; # just to be sure + unless (eval { + $self->goto ($slaying, $hp, $sp); + + 1; + }) { + $self->message ("Something went wrong deep within the crossfire server. " + . "I'll try to bring you back to the map you were before. " + . "Please report this to the dungeon master!", + cf::NDI_UNIQUE | cf::NDI_RED); + + warn "ERROR in enter_exit: $@"; + $self->leave_link; + } + })->prio (1); +} + =head3 cf::client =over 4 @@ -1085,7 +1997,7 @@ my ($self, $text, $flags) = @_; utf8::encode $text; - $self->send_packet (sprintf "drawinfo %d %s", $flags, $text); + $self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text); } @@ -1122,9 +2034,11 @@ # this weird shuffling is so that direct followup queries # get handled first - my $queue = delete $ns->{query_queue}; + my $queue = delete $ns->{query_queue} + or return; # be conservative, not sure how that can happen, but we saw a crash here (shift @$queue)->[1]->($msg); + return unless $ns->valid; # temporary(?) workaround for callback destroying socket push @{ $ns->{query_queue} }, @$queue; @@ -1138,7 +2052,7 @@ }, ); -=item $client->coro (\&cb) +=item $client->async (\&cb) Create a new coroutine, running the specified callback. The coroutine will be automatically cancelled when the client gets destroyed (e.g. on logout, @@ -1146,15 +2060,10 @@ =cut -sub cf::client::coro { +sub cf::client::async { my ($self, $cb) = @_; - my $coro; $coro = async { - eval { - $cb->(); - }; - warn $@ if $@; - }; + my $coro = &Coro::async ($cb); $coro->on_destroy (sub { delete $self->{_coro}{$coro+0}; @@ -1197,7 +2106,7 @@ =pod -The following fucntions and emthods are available within a safe environment: +The following functions and methods are available within a safe environment: cf::object contr pay_amount pay_player map cf::object::player player @@ -1300,100 +2209,118 @@ =over 4 -=item $hashref = cf::db_get $family - -Return a hashref for use by the extension C<$family>, which can be -modified. After modifications, you have to call C or -C. - =item $value = cf::db_get $family => $key -Returns a single value from the database - -=item cf::db_put $family => $hashref - -Stores the given family hashref into the database. Updates are delayed, if -you want the data to be synced to disk immediately, use C. +Returns a single value from the database. =item cf::db_put $family => $key => $value -Stores the given C<$value> in the family hash. Updates are delayed, if you -want the data to be synced to disk immediately, use C. - -=item cf::db_dirty - -Marks the database as dirty, to be updated at a later time. - -=item cf::db_sync - -Immediately write the database to disk I. +Stores the given C<$value> in the family. =cut our $DB; -{ - my $path = cf::localdir . "/database.pst"; +sub db_init { + unless ($DB) { + $DB = BDB::db_create $DB_ENV; + + cf::sync_job { + eval { + $DB->set_flags (BDB::CHKSUM); + + BDB::db_open $DB, undef, "db", undef, BDB::BTREE, + BDB::CREATE | BDB::AUTO_COMMIT, 0666; + cf::cleanup "db_open(db): $!" if $!; + }; + cf::cleanup "db_open(db): $@" if $@; + }; - sub db_load() { - warn "loading database $path\n";#d# remove later - $DB = stat $path ? Storable::retrieve $path : { }; - } + my $path = cf::localdir . "/database.pst"; + if (stat $path) { + cf::sync_job { + my $pst = Storable::retrieve $path; - my $pid; + cf::db_put (board => data => $pst->{board}); + cf::db_put (guildrules => data => $pst->{guildrules}); + cf::db_put (rent => balance => $pst->{rent}{balance}); + BDB::db_env_txn_checkpoint $DB_ENV; - sub db_save() { - warn "saving database $path\n";#d# remove later - waitpid $pid, 0 if $pid; - if (0 == ($pid = fork)) { - $DB->{_meta}{version} = 1; - Storable::nstore $DB, "$path~"; - rename "$path~", $path; - cf::_exit 0 if defined $pid; + unlink $path; + }; } } +} + +sub db_get($$) { + my $key = "$_[0]/$_[1]"; - my $dirty; + cf::sync_job { + BDB::db_get $DB, undef, $key, my $data; - sub db_sync() { - db_save if $dirty; - undef $dirty; + $! ? () + : Compress::LZF::sthaw $data } +} - my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub { - db_sync; - }); +sub db_put($$$) { + BDB::dbreq_pri 4; + BDB::db_put $DB, undef, "$_[0]/$_[1]", Compress::LZF::sfreeze_cr $_[2], 0, sub { }; +} - sub db_dirty() { - $dirty = 1; - $idle->start; - } +############################################################################# +# the server's init and main functions - sub db_get($;$) { - @_ >= 2 - ? $DB->{$_[0]}{$_[1]} - : ($DB->{$_[0]} ||= { }) - } +sub load_facedata { + my $path = sprintf "%s/facedata", cf::datadir; - sub db_put($$;$) { - if (@_ >= 3) { - $DB->{$_[0]}{$_[1]} = $_[2]; + warn "loading facedata from $path\n"; + + my $faces; + 0 < aio_load $path, $faces + or die "$path: $!"; + + Coro::cede; + $faces = Storable::thaw $faces; + Coro::cede; + + my $meta = delete $faces->{""}; + $meta->{version} == 1 + or cf::cleanup "$path: version mismatch, cannot proceed."; + + while (my ($face, $info) = each %$faces) { + my $idx = (cf::face::find $face) || cf::face::alloc $face; + cf::face::set $idx, $info->{visibility}, $info->{magicmap}; + cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32}; + cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64}; + Coro::cede; + } + + while (my ($face, $info) = each %$faces) { + next unless $info->{smooth}; + my $idx = cf::face::find $face + or next; + if (my $smooth = cf::face::find $info->{smooth}) { + cf::face::set_smooth $idx, $smooth; } else { - $DB->{$_[0]} = $_[1]; + warn "smooth face '$info->{smooth}' not found for face '$face'"; } - db_dirty; + Coro::cede; } - cf::global->attach ( - prio => 10000, - on_cleanup => sub { - db_sync; - }, - ); + 1 } -############################################################################# -# the server's main() +sub reload_resources { + load_resource_file sprintf "%s/%s/regions", cf::datadir, cf::mapdir + or die "unable to load regions file\n";#d# + load_facedata + or die "unable to load facedata\n";#d# +} + +sub init { + reload_resources; +} sub cfg_load { open my $fh, "<:utf8", cf::confdir . "/config" @@ -1401,61 +2328,163 @@ local $/; *CFG = YAML::Syck::Load <$fh>; + + $EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37]; + + $cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset}; + $cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset}; + + if (exists $CFG{mlockall}) { + eval { + $CFG{mlockall} ? eval "mlockall()" : eval "munlockall()" + and die "WARNING: m(un)lockall failed: $!\n"; + }; + warn $@ if $@; + } } sub main { # we must not ever block the main coroutine local $Coro::idle = sub { - Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d# - (Coro::unblock_sub { + Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d# + (async { Event::one_event; - })->(); + })->prio (Coro::PRIO_MAX); }; cfg_load; - db_load; + db_init; load_extensions; + + $TICK_WATCHER->start; Event::loop; } ############################################################################# -# initialisation +# initialisation and cleanup + +# install some emergency cleanup handlers +BEGIN { + for my $signal (qw(INT HUP TERM)) { + Event->signal ( + reentrant => 0, + data => WF_AUTOCANCEL, + signal => $signal, + prio => 0, + cb => sub { + cf::cleanup "SIG$signal"; + }, + ); + } +} + +sub emergency_save() { + my $freeze_guard = cf::freeze_mainloop; + + warn "enter emergency perl save\n"; + + cf::sync_job { + # use a peculiar iteration method to avoid tripping on perl + # refcount bugs in for. also avoids problems with players + # and maps saved/destroyed asynchronously. + warn "begin emergency player save\n"; + for my $login (keys %cf::PLAYER) { + my $pl = $cf::PLAYER{$login} or next; + $pl->valid or next; + $pl->save; + } + warn "end emergency player save\n"; + + warn "begin emergency map save\n"; + for my $path (keys %cf::MAP) { + my $map = $cf::MAP{$path} or next; + $map->valid or next; + $map->save; + } + warn "end emergency map save\n"; + + warn "begin emergency database checkpoint\n"; + BDB::db_env_txn_checkpoint $DB_ENV; + warn "end emergency database checkpoint\n"; + }; + + warn "leave emergency perl save\n"; +} -sub perl_reload() { +sub post_cleanup { + my ($make_core) = @_; + + warn Carp::longmess "post_cleanup backtrace" + if $make_core; +} + +sub reload() { # can/must only be called in main if ($Coro::current != $Coro::main) { - warn "can only reload from main coroutine\n"; + warn "can only reload from main coroutine"; return; } warn "reloading..."; - local $FREEZE = 1; - cf::emergency_save; + warn "entering sync_job"; + + cf::sync_job { + cf::write_runtime; # external watchdog should not bark + cf::emergency_save; + cf::write_runtime; # external watchdog should not bark + + warn "syncing database to disk"; + BDB::db_env_txn_checkpoint $DB_ENV; - eval { # if anything goes wrong in here, we should simply crash as we already saved - # cancel all watchers + warn "cancelling all WF_AUTOCANCEL watchers"; for (Event::all_watchers) { $_->cancel if $_->data & WF_AUTOCANCEL; } - # cancel all extension coros + warn "flushing outstanding aio requests"; + for (;;) { + BDB::flush; + IO::AIO::flush; + Coro::cede; + last unless IO::AIO::nreqs || BDB::nreqs; + warn "iterate..."; + } + + ++$RELOAD; + + warn "cancelling all extension coros"; $_->cancel for values %EXT_CORO; %EXT_CORO = (); - # unload all extensions - for (@exts) { - warn "unloading <$_>"; - unload_extension $_; + warn "removing commands"; + %COMMAND = (); + + warn "removing ext commands"; + %EXTCMD = (); + + warn "unloading/nuking all extensions"; + for my $pkg (@EXTS) { + warn "... unloading $pkg"; + + if (my $cb = $pkg->can ("unload")) { + eval { + $cb->($pkg); + 1 + } or warn "$pkg unloaded, but with errors: $@"; + } + + warn "... nuking $pkg"; + Symbol::delete_package $pkg; } - # unload all modules loaded from $LIBDIR + warn "unloading all perl modules loaded from $LIBDIR"; while (my ($k, $v) = each %INC) { next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/; - warn "removing <$k>"; + warn "... unloading $k"; delete $INC{$k}; $k =~ s/\.pm$//; @@ -1468,91 +2497,111 @@ Symbol::delete_package $k; } - # sync database to disk - cf::db_sync; - IO::AIO::flush; - - # get rid of safe::, as good as possible + warn "getting rid of safe::, as good as possible"; Symbol::delete_package "safe::$_" for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region); - # remove register_script_function callbacks - # TODO - - # unload cf.pm "a bit" + warn "unloading cf.pm \"a bit\""; delete $INC{"cf.pm"}; # don't, removes xs symbols, too, # and global variables created in xs #Symbol::delete_package __PACKAGE__; - # reload cf.pm + warn "unload completed, starting to reload now"; + warn "reloading cf.pm"; require cf; cf::_connect_to_perl; # nominally unnecessary, but cannot hurt - # load config and database again + warn "loading config and database again"; cf::cfg_load; - cf::db_load; - # load extensions - warn "load extensions"; + warn "loading extensions"; cf::load_extensions; - # reattach attachments to objects - warn "reattach"; - _global_reattach; - }; + warn "reattaching attachments to objects/players"; + _global_reattach; # objects, sockets + warn "reattaching attachments to maps"; + reattach $_ for values %MAP; + warn "reattaching attachments to players"; + reattach $_ for values %PLAYER; - if ($@) { + warn "loading reloadable resources"; + reload_resources; + + warn "leaving sync_job"; + + 1 + } or do { warn $@; warn "error while reloading, exiting."; exit 1; - } + }; - warn "reloaded successfully"; + warn "reloaded"; }; -############################################################################# - -unless ($LINK_MAP) { - $LINK_MAP = cf::map::new; - - $LINK_MAP->width (41); - $LINK_MAP->height (41); - $LINK_MAP->alloc; - $LINK_MAP->path ("{link}"); - $LINK_MAP->{path} = bless { path => "{link}" }, "cf::path"; - $LINK_MAP->in_memory (MAP_IN_MEMORY); -} - -register "", __PACKAGE__; +our $RELOAD_WATCHER; # used only during reload -register_command "perl-reload" => sub { +register_command "reload" => sub { my ($who, $arg) = @_; if ($who->flag (FLAG_WIZ)) { - $who->message ("start of reload."); - perl_reload; - $who->message ("end of reload."); + $who->message ("reloading server."); + + # doing reload synchronously and two reloads happen back-to-back, + # coro crashes during coro_state_free->destroy here. + + $RELOAD_WATCHER ||= Event->timer ( + reentrant => 0, + after => 0, + data => WF_AUTOCANCEL, + cb => sub { + reload; + undef $RELOAD_WATCHER; + }, + ); } }; unshift @INC, $LIBDIR; +my $bug_warning = 0; + $TICK_WATCHER = Event->timer ( reentrant => 0, + parked => 1, prio => 0, at => $NEXT_TICK || $TICK, data => WF_AUTOCANCEL, cb => sub { - unless ($FREEZE) { - cf::server_tick; # one server iteration - $RUNTIME += $TICK; + if ($Coro::current != $Coro::main) { + Carp::cluck "major BUG: server tick called outside of main coro, skipping it" + unless ++$bug_warning > 10; + return; } + $NOW = Event::time; + + cf::server_tick; # one server iteration + $RUNTIME += $TICK; $NEXT_TICK += $TICK; + if ($NOW >= $NEXT_RUNTIME_WRITE) { + $NEXT_RUNTIME_WRITE = $NOW + 10; + Coro::async_pool { + write_runtime + or warn "ERROR: unable to write runtime file: $!"; + }; + } + + $WAIT_FOR_TICK->broadcast; + $WAIT_FOR_TICK_ONE->send if $WAIT_FOR_TICK_ONE->awaited; + +# my $AFTER = Event::time; +# warn $AFTER - $NOW;#d# + # if we are delayed by four ticks or more, skip them all $NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4; @@ -1561,27 +2610,72 @@ }, ); -IO::AIO::max_poll_time $TICK * 0.2; +{ + BDB::max_poll_time $TICK * 0.1; + $BDB_POLL_WATCHER = Event->io ( + reentrant => 0, + fd => BDB::poll_fileno, + poll => 'r', + prio => 0, + data => WF_AUTOCANCEL, + cb => \&BDB::poll_cb, + ); + BDB::min_parallel 8; -Event->io ( - fd => IO::AIO::poll_fileno, - poll => 'r', - prio => 5, - data => WF_AUTOCANCEL, - cb => \&IO::AIO::poll_cb, -); + BDB::set_sync_prepare { + my $status; + my $current = $Coro::current; + ( + sub { + $status = $!; + $current->ready; undef $current; + }, + sub { + Coro::schedule while defined $current; + $! = $status; + }, + ) + }; -Event->timer ( - data => WF_AUTOCANCEL, - after => 0, - interval => 10, - cb => sub { - (Coro::unblock_sub { - write_runtime - or warn "ERROR: unable to write runtime file: $!"; - })->(); - }, -); + unless ($DB_ENV) { + $DB_ENV = BDB::db_env_create; + + cf::sync_job { + eval { + BDB::db_env_open + $DB_ENV, + $BDB_ENV_DIR, + BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN + | BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE, + 0666; + + cf::cleanup "db_env_open($BDB_ENV_DIR): $!" if $!; + + $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1); + $DB_ENV->set_lk_detect; + }; + + cf::cleanup "db_env_open(db): $@" if $@; + }; + } +} + +{ + IO::AIO::min_parallel 8; + + undef $Coro::AIO::WATCHER; + IO::AIO::max_poll_time $TICK * 0.1; + $AIO_POLL_WATCHER = Event->io ( + reentrant => 0, + data => WF_AUTOCANCEL, + fd => IO::AIO::poll_fileno, + poll => 'r', + prio => 6, + cb => \&IO::AIO::poll_cb, + ); +} + +END { cf::emergency_save } 1