[ViewVC] Diff of: cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.267 by root, Sat May 19 00:08:11 2007 UTC vs.
Revision 1.281 by root, Sat Jun 16 23:22:59 2007 UTC

…		…
187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		192	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
192	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	193	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
193		194
194	# we bless all objects into (empty) derived classes to force a method lookup	195	# we bless all objects into (empty) derived classes to force a method lookup
195	# within the Safe compartment.	196	# within the Safe compartment.
196	for my $pkg (qw(	197	for my $pkg (qw(
197	cf::global cf::attachable	198	cf::global cf::attachable
…		…
205	}	206	}
206		207
207	$Event::DIED = sub {	208	$Event::DIED = sub {
208	warn "error in event callback: @_";	209	warn "error in event callback: @_";
209	};	210	};
		211
		212	#############################################################################
210		213
211	=head2 UTILITY FUNCTIONS	214	=head2 UTILITY FUNCTIONS
212		215
213	=over 4	216	=over 4
214		217
…		…
317		320
318	BEGIN { *async = \&Coro::async_pool }	321	BEGIN { *async = \&Coro::async_pool }
319		322
320	=item cf::sync_job { BLOCK }	323	=item cf::sync_job { BLOCK }
321		324
322	The design of crossfire+ requires that the main coro ($Coro::main) is	325	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
323	always able to handle events or runnable, as crossfire+ is only partly	326	is always able to handle events or runnable, as Crossfire TRT is only
324	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	327	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		328	acceptable.
325		329
326	If it must be done, put the blocking parts into C<sync_job>. This will run	330	If it must be done, put the blocking parts into C<sync_job>. This will run
327	the given BLOCK in another coroutine while waiting for the result. The	331	the given BLOCK in another coroutine while waiting for the result. The
328	server will be frozen during this time, so the block should either finish	332	server will be frozen during this time, so the block should either finish
329	fast or be very important.	333	fast or be very important.
…		…
389	$EXT_CORO{$coro+0} = $coro;	393	$EXT_CORO{$coro+0} = $coro;
390		394
391	$coro	395	$coro
392	}	396	}
393		397
394	sub write_runtime {	398	=item fork_call { }, $args
395	my $runtime = "$LOCALDIR/runtime";
396		399
397	# first touch the runtime file to show we are still running:	400	Executes the given code block with the given arguments in a seperate
398	# the fsync below can take a very very long time.	401	process, returning the results. Everything must be serialisable with
		402	Coro::Storable. May, of course, block. Note that the executed sub may
		403	never block itself or use any form of Event handling.
399		404
400	if (my $fh = aio_open $runtime, O_WRONLY, 0) {	405	=cut
401	utime undef, undef, $fh;
402	}
403		406
404	my $guard = cf::lock_acquire "write_runtime";	407	sub fork_call(&@) {
		408	my ($cb, @args) = @_;
405		409
406	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644	410	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
407	or return;	411	# or die "socketpair: $!";
		412	pipe my $fh1, my $fh2
		413	or die "pipe: $!";
408		414
409	my $value = $cf::RUNTIME + 90 + 10;	415	if (my $pid = fork) {
410	# 10 is the runtime save interval, for a monotonic clock
411	# 60 allows for the watchdog to kill the server.
412
413	(aio_write $fh, 0, (length $value), $value, 0) <= 0
414	and return;
415
416	# always fsync - this file is important
417	aio_fsync $fh
418	and return;
419
420	# touch it again to show we are up-to-date
421	utime undef, undef, $fh;
422
423	close $fh	416	close $fh2;
424	or return;
425		417
426	aio_rename "$runtime~", $runtime	418	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
427	and return;	419	$res = Coro::Storable::thaw $res;
428		420
429	warn "runtime file written.\n";#d#	421	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
430		422
		423	die $$res unless "ARRAY" eq ref $res;
		424
		425	return wantarray ? @$res : $res->[-1];
		426	} else {
		427	reset_signals;
		428	local $SIG{__WARN__};
		429	local $SIG{__DIE__};
		430	eval {
		431	close $fh1;
		432
		433	my @res = eval { $cb->(@args) };
		434	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		435	};
		436
		437	warn $@ if $@;
		438	_exit 0;
431	1	439	}
		440	}
		441
		442	=item $value = cf::db_get $family => $key
		443
		444	Returns a single value from the environment database.
		445
		446	=item cf::db_put $family => $key => $value
		447
		448	Stores the given C<$value> in the family. It can currently store binary
		449	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		450
		451	=cut
		452
		453	our $DB;
		454
		455	sub db_init {
		456	unless ($DB) {
		457	$DB = BDB::db_create $DB_ENV;
		458
		459	cf::sync_job {
		460	eval {
		461	$DB->set_flags (BDB::CHKSUM);
		462
		463	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		464	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
		465	cf::cleanup "db_open(db): $!" if $!;
		466	};
		467	cf::cleanup "db_open(db): $@" if $@;
		468	};
		469	}
		470	}
		471
		472	sub db_get($$) {
		473	my $key = "$_[0]/$_[1]";
		474
		475	cf::sync_job {
		476	BDB::db_get $DB, undef, $key, my $data;
		477
		478	$! ? ()
		479	: $data
		480	}
		481	}
		482
		483	sub db_put($$$) {
		484	BDB::dbreq_pri 4;
		485	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		486	}
		487
		488	=item cf::cache $id => [$paths...], $processversion => $process
		489
		490	Generic caching function that returns the value of the resource $id,
		491	caching and regenerating as required.
		492
		493	This function can block.
		494
		495	=cut
		496
		497	sub cache {
		498	my ($id, $src, $processversion, $process) = @_;
		499
		500	my $meta =
		501	join "\x00",
		502	$processversion,
		503	map {
		504	aio_stat $_
		505	and Carp::croak "$_: $!";
		506
		507	($_, (stat _)[7,9])
		508	} @$src;
		509
		510	my $dbmeta = db_get cache => "$id/meta";
		511	if ($dbmeta ne $meta) {
		512	# changed, we may need to process
		513
		514	my @data;
		515	my $md5;
		516
		517	for (0 .. $#$src) {
		518	0 <= aio_load $src->[$_], $data[$_]
		519	or Carp::croak "$src->[$_]: $!";
		520	}
		521
		522	# if processing is expensive, check
		523	# checksum first
		524	if (1) {
		525	$md5 =
		526	join "\x00",
		527	$processversion,
		528	map {
		529	Coro::cede;
		530	($src->[$_], Digest::MD5::md5_hex $data[$_])
		531	} 0.. $#$src;
		532
		533
		534	my $dbmd5 = db_get cache => "$id/md5";
		535	if ($dbmd5 eq $md5) {
		536	db_put cache => "$id/meta", $meta;
		537
		538	return db_get cache => "$id/data";
		539	}
		540	}
		541
		542	my $t1 = Time::HiRes::time;
		543	my $data = $process->(\@data);
		544	my $t2 = Time::HiRes::time;
		545
		546	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		547
		548	db_put cache => "$id/data", $data;
		549	db_put cache => "$id/md5" , $md5;
		550	db_put cache => "$id/meta", $meta;
		551
		552	return $data;
		553	}
		554
		555	db_get cache => "$id/data"
432	}	556	}
433		557
434	=item cf::datalog type => key => value, ...	558	=item cf::datalog type => key => value, ...
435		559
436	Log a datalog packet of the given type with the given key-value pairs.	560	Log a datalog packet of the given type with the given key-value pairs.
…		…
454	attach callbacks/event handlers (a collection of which is called an "attachment")	578	attach callbacks/event handlers (a collection of which is called an "attachment")
455	to it. All such attachable objects support the following methods.	579	to it. All such attachable objects support the following methods.
456		580
457	In the following description, CLASS can be any of C<global>, C<object>	581	In the following description, CLASS can be any of C<global>, C<object>
458	C<player>, C<client> or C<map> (i.e. the attachable objects in	582	C<player>, C<client> or C<map> (i.e. the attachable objects in
459	crossfire+).	583	Crossfire TRT).
460		584
461	=over 4	585	=over 4
462		586
463	=item $attachable->attach ($attachment, key => $value...)	587	=item $attachable->attach ($attachment, key => $value...)
464		588
…		…
666	_attach $registry, $klass, @attach;	790	_attach $registry, $klass, @attach;
667	}	791	}
668		792
669	$obj->{$name} = \%arg;	793	$obj->{$name} = \%arg;
670	} else {	794	} else {
671	warn "object uses attachment '$name' that is not available, postponing.\n";	795	warn "object uses attachment '$name' which is not available, postponing.\n";
672	}	796	}
673		797
674	$obj->{_attachment}{$name} = undef;	798	$obj->{_attachment}{$name} = undef;
675	}	799	}
676		800
…		…
874	or return;	998	or return;
875	$av = eval { (Storable::thaw $av)->{objs} };	999	$av = eval { (Storable::thaw $av)->{objs} };
876	}	1000	}
877		1001
878	warn sprintf "loading %s (%d)\n",	1002	warn sprintf "loading %s (%d)\n",
879	$filename, length $data, scalar @{$av \|\| []};#d#	1003	$filename, length $data, scalar @{$av \|\| []};
880	return ($data, $av);	1004	return ($data, $av);
881	}	1005	}
		1006
		1007	=head2 COMMAND CALLBACKS
		1008
		1009	=over 4
		1010
		1011	=cut
882		1012
883	#############################################################################	1013	#############################################################################
884	# command handling &c	1014	# command handling &c
885		1015
886	=item cf::register_command $name => \&callback($ob,$args);	1016	=item cf::register_command $name => \&callback($ob,$args);
…		…
899	push @{ $COMMAND{$name} }, [$caller, $cb];	1029	push @{ $COMMAND{$name} }, [$caller, $cb];
900	}	1030	}
901		1031
902	=item cf::register_extcmd $name => \&callback($pl,$packet);	1032	=item cf::register_extcmd $name => \&callback($pl,$packet);
903		1033
904	Register a callbackf ro execution when the client sends an extcmd packet.	1034	Register a callback fro execution when the client sends an extcmd packet.
905		1035
906	If the callback returns something, it is sent back as if reply was being	1036	If the callback returns something, it is sent back as if reply was being
907	called.	1037	called.
908		1038
909	=cut	1039	=cut
…		…
944		1074
945	cf::override;	1075	cf::override;
946	},	1076	},
947	);	1077	);
948		1078
949	sub load_extension {
950	my ($path) = @_;
951
952	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
953	my $base = $1;
954	my $pkg = $1;
955	$pkg =~ s/[^[:word:]]/_/g;
956	$pkg = "ext::$pkg";
957
958	warn "... loading '$path' into '$pkg'\n";
959
960	open my $fh, "<:utf8", $path
961	or die "$path: $!";
962
963	my $source =
964	"package $pkg; use strict; use utf8;\n"
965	. "#line 1 \"$path\"\n{\n"
966	. (do { local $/; <$fh> })
967	. "\n};\n1";
968
969	unless (eval $source) {
970	my $msg = $@ ? "$path: $@\n"
971	: "extension disabled.\n";
972	if ($source =~ /^#!.perl.#.*MANDATORY/m) { # ugly match
973	warn $@;
974	warn "mandatory extension failed to load, exiting.\n";
975	exit 1;
976	}
977	die $@;
978	}
979
980	push @EXTS, $pkg;
981	}
982
983	sub load_extensions {	1079	sub load_extensions {
		1080	cf::sync_job {
		1081	my %todo;
		1082
984	for my $ext (<$LIBDIR/*.ext>) {	1083	for my $path (<$LIBDIR/*.ext>) {
985	next unless -r $ext;	1084	next unless -r $path;
986	eval {	1085
987	load_extension $ext;	1086	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1087	my $base = $1;
		1088	my $pkg = $1;
		1089	$pkg =~ s/[^[:word:]]/_/g;
		1090	$pkg = "ext::$pkg";
		1091
		1092	open my $fh, "<:utf8", $path
		1093	or die "$path: $!";
		1094
		1095	my $source = do { local $/; <$fh> };
		1096
		1097	my %ext = (
		1098	path => $path,
		1099	base => $base,
		1100	pkg => $pkg,
		1101	);
		1102
		1103	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1104	if $source =~ /\A#!.?perl.?#\s(.)$/m;
		1105
		1106	$ext{source} =
		1107	"package $pkg; use strict; use utf8;\n"
		1108	. "#line 1 \"$path\"\n{\n"
		1109	. $source
		1110	. "\n};\n1";
		1111
		1112	$todo{$base} = \%ext;
		1113	}
		1114
		1115	my %done;
		1116	while (%todo) {
		1117	my $progress;
		1118
		1119	while (my ($k, $v) = each %todo) {
		1120	for (split /,\s*/, $v->{meta}{depends}) {
		1121	goto skip
		1122	unless exists $done{$_};
		1123	}
		1124
		1125	warn "... loading '$k' into '$v->{pkg}'\n";
		1126
		1127	unless (eval $v->{source}) {
		1128	my $msg = $@ ? "$v->{path}: $@\n"
		1129	: "$v->{base}: extension inactive.\n";
		1130
		1131	if (exists $v->{meta}{mandatory}) {
		1132	warn $msg;
		1133	warn "mandatory extension failed to load, exiting.\n";
		1134	exit 1;
		1135	}
		1136
		1137	warn $msg;
		1138	}
		1139
		1140	$done{$k} = delete $todo{$k};
		1141	push @EXTS, $v->{pkg};
		1142	$progress = 1;
988	1	1143	}
989	} or warn "$ext not loaded: $@";	1144
		1145	skip:
		1146	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1147	unless $progress;
		1148	}
990	}	1149	};
991	}	1150	}
992		1151
993	#############################################################################	1152	#############################################################################
		1153
		1154	=back
994		1155
995	=head2 CORE EXTENSIONS	1156	=head2 CORE EXTENSIONS
996		1157
997	Functions and methods that extend core crossfire objects.	1158	Functions and methods that extend core crossfire objects.
998		1159
…		…
1222		1383
1223	package cf::region;	1384	package cf::region;
1224		1385
1225	=item cf::region::find_by_path $path	1386	=item cf::region::find_by_path $path
1226		1387
1227	Tries to decuce the probable region for a map knowing only its path.	1388	Tries to decuce the likely region for a map knowing only its path.
1228		1389
1229	=cut	1390	=cut
1230		1391
1231	sub find_by_path($) {	1392	sub find_by_path($) {
1232	my ($path) = @_;	1393	my ($path) = @_;
…		…
1306	my ($self, $merge) = @_;	1467	my ($self, $merge) = @_;
1307		1468
1308	# we have to keep some variables in memory intact	1469	# we have to keep some variables in memory intact
1309	local $self->{path};	1470	local $self->{path};
1310	local $self->{load_path};	1471	local $self->{load_path};
1311	local $self->{deny_save};
1312	local $self->{deny_reset};
1313		1472
1314	$self->SUPER::thawer_merge ($merge);	1473	$self->SUPER::thawer_merge ($merge);
1315	}	1474	}
1316		1475
1317	sub normalise {	1476	sub normalise {
…		…
1417		1576
1418	$_->change_map_light ($change)	1577	$_->change_map_light ($change)
1419	for grep $_->outdoor, values %cf::MAP;	1578	for grep $_->outdoor, values %cf::MAP;
1420	}	1579	}
1421		1580
		1581	sub decay_objects {
		1582	my ($self) = @_;
		1583
		1584	return if $self->{deny_reset};
		1585
		1586	$self->do_decay_objects;
		1587	}
		1588
1422	sub unlink_save {	1589	sub unlink_save {
1423	my ($self) = @_;	1590	my ($self) = @_;
1424		1591
1425	utf8::encode (my $save = $self->save_path);	1592	utf8::encode (my $save = $self->save_path);
1426	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;	1593	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
…		…
1482	$self->load_header_orig	1649	$self->load_header_orig
1483	or return;	1650	or return;
1484	$self->prepare_orig;	1651	$self->prepare_orig;
1485	}	1652	}
1486		1653
		1654	$self->{deny_reset} = 1
		1655	if $self->no_reset;
		1656
1487	$self->default_region (cf::region::find_by_path $self->{path})	1657	$self->default_region (cf::region::find_by_path $self->{path})
1488	unless $self->default_region;	1658	unless $self->default_region;
1489		1659
1490	1	1660	1
1491	}	1661	}
…		…
1506	$map->{last_save} = $cf::RUNTIME;	1676	$map->{last_save} = $cf::RUNTIME;
1507		1677
1508	$map->load_header	1678	$map->load_header
1509	or return;	1679	or return;
1510		1680
1511	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	1681	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1512	# doing this can freeze the server in a sync job, obviously	1682	# doing this can freeze the server in a sync job, obviously
1513	#$cf::WAIT_FOR_TICK->wait;	1683	#$cf::WAIT_FOR_TICK->wait;
1514	$map->reset;	1684	$map->reset;
1515	undef $guard;	1685	undef $guard;
1516	return find $path;	1686	return find $path;
…		…
1583	my ($self, $ob) = @_;	1753	my ($self, $ob) = @_;
1584		1754
1585	return find "~" . $ob->name . "/" . $self->{path}	1755	return find "~" . $ob->name . "/" . $self->{path}
1586	if $self->per_player;	1756	if $self->per_player;
1587		1757
		1758	# return find "?party/" . $ob->name . "/" . $self->{path}
		1759	# if $self->per_party;
		1760
1588	$self	1761	$self
1589	}	1762	}
1590		1763
1591	# find and load all maps in the 3x3 area around a map	1764	# find and load all maps in the 3x3 area around a map
1592	sub load_diag {	1765	sub load_diag {
…		…
1702		1875
1703	sub reset_at {	1876	sub reset_at {
1704	my ($self) = @_;	1877	my ($self) = @_;
1705		1878
1706	# TODO: safety, remove and allow resettable per-player maps	1879	# TODO: safety, remove and allow resettable per-player maps
1707	return 1e99 if $self->isa ("ext::map_per_player");#d#
1708	return 1e99 if $self->{deny_reset};	1880	return 1e99 if $self->{deny_reset};
1709		1881
1710	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	1882	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1711	my $to = List::Util::min $MAX_RESET, $self->reset_timeout \|\| $DEFAULT_RESET;	1883	my $to = List::Util::min $MAX_RESET, $self->reset_timeout \|\| $DEFAULT_RESET;
1712		1884
…		…
1723	my ($self) = @_;	1895	my ($self) = @_;
1724		1896
1725	my $lock = cf::lock_acquire "map_data:$self->{path}";	1897	my $lock = cf::lock_acquire "map_data:$self->{path}";
1726		1898
1727	return if $self->players;	1899	return if $self->players;
1728	return if $self->isa ("ext::map_per_player");#d#
1729		1900
1730	warn "resetting map ", $self->path;#d#	1901	warn "resetting map ", $self->path;
1731		1902
1732	$self->in_memory (cf::MAP_SWAPPED);	1903	$self->in_memory (cf::MAP_SWAPPED);
1733		1904
1734	# need to save uniques path	1905	# need to save uniques path
1735	unless ($self->{deny_save}) {	1906	unless ($self->{deny_save}) {
…		…
1767	$cf::MAP{$self->path} = $self;	1938	$cf::MAP{$self->path} = $self;
1768		1939
1769	$self->reset; # polite request, might not happen	1940	$self->reset; # polite request, might not happen
1770	}	1941	}
1771		1942
		1943	=item $maps = cf::map::tmp_maps
		1944
		1945	Returns an arrayref with all map paths of currently instantiated and saved
		1946	maps. May block.
		1947
		1948	=cut
		1949
		1950	sub tmp_maps() {
		1951	[
		1952	map {
		1953	utf8::decode $_;
		1954	/\.map$/
		1955	? normalise $_
		1956	: ()
		1957	} @{ aio_readdir $TMPDIR or [] }
		1958	]
		1959	}
		1960
		1961	=item $maps = cf::map::random_maps
		1962
		1963	Returns an arrayref with all map paths of currently instantiated and saved
		1964	random maps. May block.
		1965
		1966	=cut
		1967
		1968	sub random_maps() {
		1969	[
		1970	map {
		1971	utf8::decode $_;
		1972	/\.map$/
		1973	? normalise "?random/$_"
		1974	: ()
		1975	} @{ aio_readdir $RANDOMDIR or [] }
		1976	]
		1977	}
		1978
1772	=item cf::map::unique_maps	1979	=item cf::map::unique_maps
1773		1980
1774	Returns an arrayref of paths of all shared maps that have	1981	Returns an arrayref of paths of all shared maps that have
1775	instantiated unique items. May block.	1982	instantiated unique items. May block.
1776		1983
1777	=cut	1984	=cut
1778		1985
1779	sub unique_maps() {	1986	sub unique_maps() {
1780	my $files = aio_readdir $UNIQUEDIR	1987	[
1781	or return;	1988	map {
1782
1783	my @paths;
1784
1785	for (@$files) {
1786	utf8::decode $_;	1989	utf8::decode $_;
1787	next if /\.pst$/;	1990	/\.map$/
1788	next unless /^$PATH_SEP/o;	1991	? normalise $_
1789		1992	: ()
1790	push @paths, cf::map::normalise $_;	1993	} @{ aio_readdir $UNIQUEDIR or [] }
1791	}	1994	]
1792
1793	\@paths
1794	}	1995	}
1795		1996
1796	package cf;	1997	package cf;
1797		1998
1798	=back	1999	=back
…		…
1904	$self->deactivate_recursive;	2105	$self->deactivate_recursive;
1905		2106
1906	return if UNIVERSAL::isa $self->map, "ext::map_link";	2107	return if UNIVERSAL::isa $self->map, "ext::map_link";
1907		2108
1908	$self->{_link_pos} \|\|= [$self->map->{path}, $self->x, $self->y]	2109	$self->{_link_pos} \|\|= [$self->map->{path}, $self->x, $self->y]
1909	if $self->map;	2110	if $self->map && $self->map->{path} ne "{link}";
1910		2111
1911	$self->enter_map ($LINK_MAP \|\| link_map, 10, 10);	2112	$self->enter_map ($LINK_MAP \|\| link_map, 10, 10);
1912	}	2113	}
1913		2114
1914	sub cf::object::player::leave_link {	2115	sub cf::object::player::leave_link {
1915	my ($self, $map, $x, $y) = @_;	2116	my ($self, $map, $x, $y) = @_;
		2117
		2118	return unless $self->contr->active;
1916		2119
1917	my $link_pos = delete $self->{_link_pos};	2120	my $link_pos = delete $self->{_link_pos};
1918		2121
1919	unless ($map) {	2122	unless ($map) {
1920	# restore original map position	2123	# restore original map position
…		…
1943		2146
1944	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2147	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1945	$self->enter_map ($map, $x, $y);	2148	$self->enter_map ($map, $x, $y);
1946	}	2149	}
1947		2150
1948	cf::player->attach (
1949	on_logout => sub {
1950	my ($pl) = @_;
1951
1952	# abort map switching before logout
1953	if ($pl->ob->{_link_pos}) {
1954	cf::sync_job {
1955	$pl->ob->leave_link
1956	};
1957	}
1958	},
1959	on_login => sub {
1960	my ($pl) = @_;
1961
1962	# try to abort aborted map switching on player login :)
1963	# should happen only on crashes
1964	if ($pl->ob->{_link_pos}) {
1965	$pl->ob->enter_link;
1966	(async {
1967	$pl->ob->reply (undef,
1968	"There was an internal problem at your last logout, "
1969	. "the server will try to bring you to your intended destination in a second.",
1970	cf::NDI_RED);
1971	# we need this sleep as the login has a concurrent enter_exit running
1972	# and this sleep increases chances of the player not ending up in scorn
1973	Coro::Timer::sleep 1;
1974	$pl->ob->leave_link;
1975	})->prio (2);
1976	}
1977	},
1978	);
1979
1980	=item $player_object->goto ($path, $x, $y)	2151	=item $player_object->goto ($path, $x, $y[, $check->($map)])
1981		2152
		2153	Moves the player to the given map-path and coordinates by first freezing
		2154	her, loading and preparing them map, calling the provided $check callback
		2155	that has to return the map if sucecssful, and then unfreezes the player on
		2156	the new (success) or old (failed) map position.
		2157
1982	=cut	2158	=cut
		2159
		2160	our $GOTOGEN;
1983		2161
1984	sub cf::object::player::goto {	2162	sub cf::object::player::goto {
1985	my ($self, $path, $x, $y) = @_;	2163	my ($self, $path, $x, $y, $check) = @_;
		2164
		2165	# do generation counting so two concurrent goto's will be executed in-order
		2166	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1986		2167
1987	$self->enter_link;	2168	$self->enter_link;
1988		2169
1989	(async {	2170	(async {
1990	my $map = eval {	2171	my $map = eval {
1991	my $map = cf::map::find $path;	2172	my $map = cf::map::find $path;
		2173
		2174	if ($map) {
1992	$map = $map->customise_for ($self) if $map;	2175	$map = $map->customise_for ($self);
		2176	$map = $check->($map) if $check && $map;
		2177	} else {
		2178	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
		2179	}
		2180
1993	$map	2181	$map
		2182	};
		2183
		2184	if ($@) {
		2185	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE \| cf::NDI_RED);
		2186	LOG llevError \| logBacktrace, Carp::longmess $@;
1994	} or	2187	}
1995	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
1996		2188
		2189	if ($gen == $self->{_goto_generation}) {
		2190	delete $self->{_goto_generation};
1997	$self->leave_link ($map, $x, $y);	2191	$self->leave_link ($map, $x, $y);
		2192	}
1998	})->prio (1);	2193	})->prio (1);
1999	}	2194	}
2000		2195
2001	=item $player_object->enter_exit ($exit_object)	2196	=item $player_object->enter_exit ($exit_object)
2002		2197
…		…
2316	=back	2511	=back
2317		2512
2318	=cut	2513	=cut
2319		2514
2320	#############################################################################	2515	#############################################################################
2321
2322	=head2 EXTENSION DATABASE SUPPORT
2323
2324	Crossfire maintains a very simple database for extension use. It can
2325	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2326	convert to/from binary).
2327
2328	The parameter C<$family> should best start with the name of the extension
2329	using it, it should be unique.
2330
2331	=over 4
2332
2333	=item $value = cf::db_get $family => $key
2334
2335	Returns a single value from the database.
2336
2337	=item cf::db_put $family => $key => $value
2338
2339	Stores the given C<$value> in the family.
2340
2341	=cut
2342
2343	our $DB;
2344
2345	sub db_init {
2346	unless ($DB) {
2347	$DB = BDB::db_create $DB_ENV;
2348
2349	cf::sync_job {
2350	eval {
2351	$DB->set_flags (BDB::CHKSUM);
2352
2353	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2354	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
2355	cf::cleanup "db_open(db): $!" if $!;
2356	};
2357	cf::cleanup "db_open(db): $@" if $@;
2358	};
2359	}
2360	}
2361
2362	sub db_get($$) {
2363	my $key = "$_[0]/$_[1]";
2364
2365	cf::sync_job {
2366	BDB::db_get $DB, undef, $key, my $data;
2367
2368	$! ? ()
2369	: $data
2370	}
2371	}
2372
2373	sub db_put($$$) {
2374	BDB::dbreq_pri 4;
2375	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2376	}
2377
2378	=item cf::cache $id => [$paths...], $processversion => $process
2379
2380	Generic caching function that returns the value of the resource $id,
2381	caching and regenerating as required.
2382
2383	This function can block.
2384
2385	=cut
2386
2387	sub cache {
2388	my ($id, $src, $processversion, $process) = @_;
2389
2390	my $meta =
2391	join "\x00",
2392	$processversion,
2393	map {
2394	aio_stat $_
2395	and Carp::croak "$_: $!";
2396
2397	($_, (stat _)[7,9])
2398	} @$src;
2399
2400	my $dbmeta = db_get cache => "$id/meta";
2401	if ($dbmeta ne $meta) {
2402	# changed, we may need to process
2403
2404	my @data;
2405	my $md5;
2406
2407	for (0 .. $#$src) {
2408	0 <= aio_load $src->[$_], $data[$_]
2409	or Carp::croak "$src->[$_]: $!";
2410	}
2411
2412	# if processing is expensive, check
2413	# checksum first
2414	if (1) {
2415	$md5 =
2416	join "\x00",
2417	$processversion,
2418	map {
2419	Coro::cede;
2420	($src->[$_], Digest::MD5::md5_hex $data[$_])
2421	} 0.. $#$src;
2422
2423
2424	my $dbmd5 = db_get cache => "$id/md5";
2425	if ($dbmd5 eq $md5) {
2426	db_put cache => "$id/meta", $meta;
2427
2428	return db_get cache => "$id/data";
2429	}
2430	}
2431
2432	my $t1 = Time::HiRes::time;
2433	my $data = $process->(\@data);
2434	my $t2 = Time::HiRes::time;
2435
2436	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2437
2438	db_put cache => "$id/data", $data;
2439	db_put cache => "$id/md5" , $md5;
2440	db_put cache => "$id/meta", $meta;
2441
2442	return $data;
2443	}
2444
2445	db_get cache => "$id/data"
2446	}
2447
2448	=item fork_call { }, $args
2449
2450	Executes the given code block with the given arguments in a seperate
2451	process, returning the results. Everything must be serialisable with
2452	Coro::Storable. May, of course, block. Note that the executed sub may
2453	never block itself or use any form of Event handling.
2454
2455	=cut
2456
2457	sub fork_call(&@) {
2458	my ($cb, @args) = @_;
2459
2460	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2461	# or die "socketpair: $!";
2462	pipe my $fh1, my $fh2
2463	or die "pipe: $!";
2464
2465	if (my $pid = fork) {
2466	close $fh2;
2467
2468	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2469	$res = Coro::Storable::thaw $res;
2470
2471	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2472
2473	die $$res unless "ARRAY" eq ref $res;
2474
2475	return wantarray ? @$res : $res->[-1];
2476	} else {
2477	reset_signals;
2478	local $SIG{__WARN__};
2479	local $SIG{__DIE__};
2480	eval {
2481	close $fh1;
2482
2483	my @res = eval { $cb->(@args) };
2484	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2485	};
2486
2487	warn $@ if $@;
2488	_exit 0;
2489	}
2490	}
2491
2492
2493
2494	#############################################################################
2495	# the server's init and main functions	2516	# the server's init and main functions
2496		2517
2497	sub load_facedata($) {	2518	sub load_facedata($) {
2498	my ($path) = @_;	2519	my ($path) = @_;
2499		2520
…		…
2569	sub reload_resources {	2590	sub reload_resources {
2570	warn "reloading resource files...\n";	2591	warn "reloading resource files...\n";
2571		2592
2572	reload_regions;	2593	reload_regions;
2573	reload_facedata;	2594	reload_facedata;
		2595	#reload_archetypes;#d#
2574	reload_archetypes;	2596	reload_archetypes;
2575	reload_treasures;	2597	reload_treasures;
2576		2598
2577	warn "finished reloading resource files\n";	2599	warn "finished reloading resource files\n";
2578	}	2600	}
…		…
2635	},	2657	},
2636	);	2658	);
2637	}	2659	}
2638	}	2660	}
2639		2661
		2662	sub write_runtime {
		2663	my $runtime = "$LOCALDIR/runtime";
		2664
		2665	# first touch the runtime file to show we are still running:
		2666	# the fsync below can take a very very long time.
		2667
		2668	IO::AIO::aio_utime $runtime, undef, undef;
		2669
		2670	my $guard = cf::lock_acquire "write_runtime";
		2671
		2672	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
		2673	or return;
		2674
		2675	my $value = $cf::RUNTIME + 90 + 10;
		2676	# 10 is the runtime save interval, for a monotonic clock
		2677	# 60 allows for the watchdog to kill the server.
		2678
		2679	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2680	and return;
		2681
		2682	# always fsync - this file is important
		2683	aio_fsync $fh
		2684	and return;
		2685
		2686	# touch it again to show we are up-to-date
		2687	aio_utime $fh, undef, undef;
		2688
		2689	close $fh
		2690	or return;
		2691
		2692	aio_rename "$runtime~", $runtime
		2693	and return;
		2694
		2695	warn "runtime file written.\n";
		2696
		2697	1
		2698	}
		2699
2640	sub emergency_save() {	2700	sub emergency_save() {
2641	my $freeze_guard = cf::freeze_mainloop;	2701	my $freeze_guard = cf::freeze_mainloop;
2642		2702
2643	warn "enter emergency perl save\n";	2703	warn "enter emergency perl save\n";
2644		2704
…		…
2848	my $signal = new Coro::Signal;	2908	my $signal = new Coro::Signal;
2849	push @WAIT_FOR_TICK_BEGIN, $signal;	2909	push @WAIT_FOR_TICK_BEGIN, $signal;
2850	$signal->wait;	2910	$signal->wait;
2851	}	2911	}
2852		2912
		2913	my $min = 1e6;#d#
		2914	my $avg = 10;
2853	$TICK_WATCHER = Event->timer (	2915	$TICK_WATCHER = Event->timer (
2854	reentrant => 0,	2916	reentrant => 0,
2855	parked => 1,	2917	parked => 1,
2856	prio => 0,	2918	prio => 0,
2857	at => $NEXT_TICK \|\| $TICK,	2919	at => $NEXT_TICK \|\| $TICK,
…		…
2864	}	2926	}
2865		2927
2866	$NOW = $tick_start = Event::time;	2928	$NOW = $tick_start = Event::time;
2867		2929
2868	cf::server_tick; # one server iteration	2930	cf::server_tick; # one server iteration
		2931
		2932	0 && sync_job {#d#
		2933	for(1..10) {
		2934	my $t = Event::time;
		2935	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2936	or die;
		2937
		2938	$map->width (50);
		2939	$map->height (50);
		2940	$map->alloc;
		2941	$map->_load_objects ("/tmp/x.map", 1);
		2942	my $t = Event::time - $t;
		2943
		2944	#next unless $t < 0.0013;#d#
		2945	if ($t < $min) {
		2946	$min = $t;
		2947	}
		2948	$avg = $avg * 0.99 + $t * 0.01;
		2949	}
		2950	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2951	exit 0;
		2952	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		2953	};
2869		2954
2870	$RUNTIME += $TICK;	2955	$RUNTIME += $TICK;
2871	$NEXT_TICK += $TICK;	2956	$NEXT_TICK += $TICK;
2872		2957
2873	if ($NOW >= $NEXT_RUNTIME_WRITE) {	2958	if ($NOW >= $NEXT_RUNTIME_WRITE) {

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.267 by root, Sat May 19 00:08:11 2007 UTC vs. Revision 1.281 by root, Sat Jun 16 23:22:59 2007 UTC

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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.267 by root, Sat May 19 00:08:11 2007 UTC vs.
Revision 1.281 by root, Sat Jun 16 23:22:59 2007 UTC