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

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.263 by root, Sat May 5 05:40:27 2007 UTC vs.
Revision 1.290 by root, Mon Jul 2 03:15:30 2007 UTC

…		…
20	use Coro::Signal;	20	use Coro::Signal;
21	use Coro::Semaphore;	21	use Coro::Semaphore;
22	use Coro::AIO;	22	use Coro::AIO;
23	use Coro::Storable;	23	use Coro::Storable;
24		24
		25	use JSON::XS 1.4 ();
25	use BDB ();	26	use BDB ();
26	use Data::Dumper;	27	use Data::Dumper;
27	use Digest::MD5;	28	use Digest::MD5;
28	use Fcntl;	29	use Fcntl;
29	use YAML::Syck ();	30	use YAML::Syck ();
…		…
49	our %COMMAND = ();	50	our %COMMAND = ();
50	our %COMMAND_TIME = ();	51	our %COMMAND_TIME = ();
51		52
52	our @EXTS = (); # list of extension package names	53	our @EXTS = (); # list of extension package names
53	our %EXTCMD = ();	54	our %EXTCMD = ();
		55	our %EXTICMD = ();
54	our %EXT_CORO = (); # coroutines bound to extensions	56	our %EXT_CORO = (); # coroutines bound to extensions
55	our %EXT_MAP = (); # pluggable maps	57	our %EXT_MAP = (); # pluggable maps
56		58
57	our $RELOAD; # number of reloads so far	59	our $RELOAD; # number of reloads so far
58	our @EVENT;	60	our @EVENT;
…		…
90	our $LINK_MAP; # the special {link} map, which is always available	92	our $LINK_MAP; # the special {link} map, which is always available
91		93
92	# used to convert map paths into valid unix filenames by replacing / by ∕	94	# used to convert map paths into valid unix filenames by replacing / by ∕
93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons	95	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
94		96
		97	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		98	our $LOADAVG; # same thing, but with alpha-smoothing
		99	our $tick_start; # for load detecting purposes
		100
95	binmode STDOUT;	101	binmode STDOUT;
96	binmode STDERR;	102	binmode STDERR;
97		103
98	# read virtual server time, if available	104	# read virtual server time, if available
99	unless ($RUNTIME \|\| !-e "$LOCALDIR/runtime") {	105	unless ($RUNTIME \|\| !-e "$LOCALDIR/runtime") {
…		…
139		145
140	=item $cf::TICK	146	=item $cf::TICK
141		147
142	The interval between server ticks, in seconds.	148	The interval between server ticks, in seconds.
143		149
		150	=item $cf::LOADAVG
		151
		152	The current CPU load on the server (alpha-smoothed), as a value between 0
		153	(none) and 1 (overloaded), indicating how much time is spent on processing
		154	objects per tick. Healthy values are < 0.5.
		155
		156	=item $cf::LOAD
		157
		158	The raw value load value from the last tick.
		159
144	=item %cf::CFG	160	=item %cf::CFG
145		161
146	Configuration for the server, loaded from C</etc/crossfire/config>, or	162	Configuration for the server, loaded from C</etc/crossfire/config>, or
147	from wherever your confdir points to.	163	from wherever your confdir points to.
148		164
…		…
173	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	189	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
174	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	190	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
175	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	191	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
176	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	192	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
177	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	193	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		194	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
178	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	195	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
179		196
180	# we bless all objects into (empty) derived classes to force a method lookup	197	# we bless all objects into (empty) derived classes to force a method lookup
181	# within the Safe compartment.	198	# within the Safe compartment.
182	for my $pkg (qw(	199	for my $pkg (qw(
183	cf::global cf::attachable	200	cf::global cf::attachable
…		…
191	}	208	}
192		209
193	$Event::DIED = sub {	210	$Event::DIED = sub {
194	warn "error in event callback: @_";	211	warn "error in event callback: @_";
195	};	212	};
		213
		214	#############################################################################
196		215
197	=head2 UTILITY FUNCTIONS	216	=head2 UTILITY FUNCTIONS
198		217
199	=over 4	218	=over 4
200		219
…		…
219	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;	238	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
220	$d	239	$d
221	} \|\| "[unable to dump $_[0]: '$@']";	240	} \|\| "[unable to dump $_[0]: '$@']";
222	}	241	}
223		242
224	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
225
226	=item $ref = cf::from_json $json	243	=item $ref = cf::from_json $json
227		244
228	Converts a JSON string into the corresponding perl data structure.	245	Converts a JSON string into the corresponding perl data structure.
229		246
230	=item $json = cf::to_json $ref	247	=item $json = cf::to_json $ref
231		248
232	Converts a perl data structure into its JSON representation.	249	Converts a perl data structure into its JSON representation.
		250
		251	=cut
		252
		253	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		254
		255	sub to_json ($) { $json_coder->encode ($_[0]) }
		256	sub from_json ($) { $json_coder->decode ($_[0]) }
233		257
234	=item cf::lock_wait $string	258	=item cf::lock_wait $string
235		259
236	Wait until the given lock is available. See cf::lock_acquire.	260	Wait until the given lock is available. See cf::lock_acquire.
237		261
…		…
303		327
304	BEGIN { *async = \&Coro::async_pool }	328	BEGIN { *async = \&Coro::async_pool }
305		329
306	=item cf::sync_job { BLOCK }	330	=item cf::sync_job { BLOCK }
307		331
308	The design of crossfire+ requires that the main coro ($Coro::main) is	332	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
309	always able to handle events or runnable, as crossfire+ is only partly	333	is always able to handle events or runnable, as Crossfire TRT is only
310	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	334	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		335	acceptable.
311		336
312	If it must be done, put the blocking parts into C<sync_job>. This will run	337	If it must be done, put the blocking parts into C<sync_job>. This will run
313	the given BLOCK in another coroutine while waiting for the result. The	338	the given BLOCK in another coroutine while waiting for the result. The
314	server will be frozen during this time, so the block should either finish	339	server will be frozen during this time, so the block should either finish
315	fast or be very important.	340	fast or be very important.
…		…
318		343
319	sub sync_job(&) {	344	sub sync_job(&) {
320	my ($job) = @_;	345	my ($job) = @_;
321		346
322	if ($Coro::current == $Coro::main) {	347	if ($Coro::current == $Coro::main) {
		348	my $time = Event::time;
		349
323	# this is the main coro, too bad, we have to block	350	# this is the main coro, too bad, we have to block
324	# till the operation succeeds, freezing the server :/	351	# till the operation succeeds, freezing the server :/
325		352
326	# TODO: use suspend/resume instead	353	# TODO: use suspend/resume instead
327	# (but this is cancel-safe)	354	# (but this is cancel-safe)
…		…
338		365
339	while ($busy) {	366	while ($busy) {
340	Coro::cede or Event::one_event;	367	Coro::cede or Event::one_event;
341	}	368	}
342		369
		370	$time = Event::time - $time;
		371
		372	LOG llevError \| logBacktrace, Carp::longmess "long sync job"
		373	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		374
		375	$tick_start += $time; # do not account sync jobs to server load
		376
343	wantarray ? @res : $res[0]	377	wantarray ? @res : $res[0]
344	} else {	378	} else {
345	# we are in another coroutine, how wonderful, everything just works	379	# we are in another coroutine, how wonderful, everything just works
346		380
347	$job->()	381	$job->()
…		…
366	$EXT_CORO{$coro+0} = $coro;	400	$EXT_CORO{$coro+0} = $coro;
367		401
368	$coro	402	$coro
369	}	403	}
370		404
371	sub write_runtime {	405	=item fork_call { }, $args
372	my $guard = cf::lock_acquire "write_runtime";
373		406
374	my $runtime = "$LOCALDIR/runtime";	407	Executes the given code block with the given arguments in a seperate
		408	process, returning the results. Everything must be serialisable with
		409	Coro::Storable. May, of course, block. Note that the executed sub may
		410	never block itself or use any form of Event handling.
375		411
376	warn "starting to write runtime...\n";#d#	412	=cut
377	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
378	or return;
379		413
380	my $value = $cf::RUNTIME + 90 + 10;	414	sub fork_call(&@) {
381	# 10 is the runtime save interval, for a monotonic clock	415	my ($cb, @args) = @_;
382	# 60 allows for the watchdog to kill the server.
383		416
384	(aio_write $fh, 0, (length $value), $value, 0) <= 0	417	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
385	and return;	418	# or die "socketpair: $!";
		419	pipe my $fh1, my $fh2
		420	or die "pipe: $!";
386		421
387	# always fsync - this file is important	422	if (my $pid = fork) {
388	aio_fsync $fh
389	and return;
390
391	close $fh	423	close $fh2;
392	or return;
393		424
394	aio_rename "$runtime~", $runtime	425	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
395	and return;	426	$res = Coro::Storable::thaw $res;
396		427
397	warn "... done writing runtime.\n";#d#	428	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
398		429
		430	die $$res unless "ARRAY" eq ref $res;
		431
		432	return wantarray ? @$res : $res->[-1];
		433	} else {
		434	reset_signals;
		435	local $SIG{__WARN__};
		436	local $SIG{__DIE__};
		437	eval {
		438	close $fh1;
		439
		440	my @res = eval { $cb->(@args) };
		441	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		442	};
		443
		444	warn $@ if $@;
		445	_exit 0;
399	1	446	}
		447	}
		448
		449	=item $value = cf::db_get $family => $key
		450
		451	Returns a single value from the environment database.
		452
		453	=item cf::db_put $family => $key => $value
		454
		455	Stores the given C<$value> in the family. It can currently store binary
		456	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		457
		458	=cut
		459
		460	our $DB;
		461
		462	sub db_init {
		463	unless ($DB) {
		464	$DB = BDB::db_create $DB_ENV;
		465
		466	cf::sync_job {
		467	eval {
		468	$DB->set_flags (BDB::CHKSUM);
		469
		470	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		471	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
		472	cf::cleanup "db_open(db): $!" if $!;
		473	};
		474	cf::cleanup "db_open(db): $@" if $@;
		475	};
		476	}
		477	}
		478
		479	sub db_get($$) {
		480	my $key = "$_[0]/$_[1]";
		481
		482	cf::sync_job {
		483	BDB::db_get $DB, undef, $key, my $data;
		484
		485	$! ? ()
		486	: $data
		487	}
		488	}
		489
		490	sub db_put($$$) {
		491	BDB::dbreq_pri 4;
		492	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		493	}
		494
		495	=item cf::cache $id => [$paths...], $processversion => $process
		496
		497	Generic caching function that returns the value of the resource $id,
		498	caching and regenerating as required.
		499
		500	This function can block.
		501
		502	=cut
		503
		504	sub cache {
		505	my ($id, $src, $processversion, $process) = @_;
		506
		507	my $meta =
		508	join "\x00",
		509	$processversion,
		510	map {
		511	aio_stat $_
		512	and Carp::croak "$_: $!";
		513
		514	($_, (stat _)[7,9])
		515	} @$src;
		516
		517	my $dbmeta = db_get cache => "$id/meta";
		518	if ($dbmeta ne $meta) {
		519	# changed, we may need to process
		520
		521	my @data;
		522	my $md5;
		523
		524	for (0 .. $#$src) {
		525	0 <= aio_load $src->[$_], $data[$_]
		526	or Carp::croak "$src->[$_]: $!";
		527	}
		528
		529	# if processing is expensive, check
		530	# checksum first
		531	if (1) {
		532	$md5 =
		533	join "\x00",
		534	$processversion,
		535	map {
		536	Coro::cede;
		537	($src->[$_], Digest::MD5::md5_hex $data[$_])
		538	} 0.. $#$src;
		539
		540
		541	my $dbmd5 = db_get cache => "$id/md5";
		542	if ($dbmd5 eq $md5) {
		543	db_put cache => "$id/meta", $meta;
		544
		545	return db_get cache => "$id/data";
		546	}
		547	}
		548
		549	my $t1 = Time::HiRes::time;
		550	my $data = $process->(\@data);
		551	my $t2 = Time::HiRes::time;
		552
		553	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		554
		555	db_put cache => "$id/data", $data;
		556	db_put cache => "$id/md5" , $md5;
		557	db_put cache => "$id/meta", $meta;
		558
		559	return $data;
		560	}
		561
		562	db_get cache => "$id/data"
400	}	563	}
401		564
402	=item cf::datalog type => key => value, ...	565	=item cf::datalog type => key => value, ...
403		566
404	Log a datalog packet of the given type with the given key-value pairs.	567	Log a datalog packet of the given type with the given key-value pairs.
…		…
422	attach callbacks/event handlers (a collection of which is called an "attachment")	585	attach callbacks/event handlers (a collection of which is called an "attachment")
423	to it. All such attachable objects support the following methods.	586	to it. All such attachable objects support the following methods.
424		587
425	In the following description, CLASS can be any of C<global>, C<object>	588	In the following description, CLASS can be any of C<global>, C<object>
426	C<player>, C<client> or C<map> (i.e. the attachable objects in	589	C<player>, C<client> or C<map> (i.e. the attachable objects in
427	crossfire+).	590	Crossfire TRT).
428		591
429	=over 4	592	=over 4
430		593
431	=item $attachable->attach ($attachment, key => $value...)	594	=item $attachable->attach ($attachment, key => $value...)
432		595
…		…
595	$registry = $CB_TYPE[$object_type] \|\|= [];	758	$registry = $CB_TYPE[$object_type] \|\|= [];
596		759
597	} elsif ($type eq "subtype") {	760	} elsif ($type eq "subtype") {
598	defined $object_type or Carp::croak "subtype specified without type";	761	defined $object_type or Carp::croak "subtype specified without type";
599	my $object_subtype = shift @arg;	762	my $object_subtype = shift @arg;
600	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] \|\|= [];	763	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] \|\|= [];
601		764
602	} elsif ($type eq "package") {	765	} elsif ($type eq "package") {
603	my $pkg = shift @arg;	766	my $pkg = shift @arg;
604		767
605	while (my ($name, $id) = each %cb_id) {	768	while (my ($name, $id) = each %cb_id) {
…		…
634	_attach $registry, $klass, @attach;	797	_attach $registry, $klass, @attach;
635	}	798	}
636		799
637	$obj->{$name} = \%arg;	800	$obj->{$name} = \%arg;
638	} else {	801	} else {
639	warn "object uses attachment '$name' that is not available, postponing.\n";	802	warn "object uses attachment '$name' which is not available, postponing.\n";
640	}	803	}
641		804
642	$obj->{_attachment}{$name} = undef;	805	$obj->{_attachment}{$name} = undef;
643	}	806	}
644		807
…		…
646	if (ref $_[0]) {	809	if (ref $_[0]) {
647	_object_attach @_;	810	_object_attach @_;
648	} else {	811	} else {
649	_attach shift->_attach_registry, @_;	812	_attach shift->_attach_registry, @_;
650	}	813	}
		814	_recalc_want;
651	};	815	};
652		816
653	# all those should be optimised	817	# all those should be optimised
654	sub cf::attachable::detach {	818	sub cf::attachable::detach {
655	my ($obj, $name) = @_;	819	my ($obj, $name) = @_;
…		…
658	delete $obj->{_attachment}{$name};	822	delete $obj->{_attachment}{$name};
659	reattach ($obj);	823	reattach ($obj);
660	} else {	824	} else {
661	Carp::croak "cannot, currently, detach class attachments";	825	Carp::croak "cannot, currently, detach class attachments";
662	}	826	}
		827	_recalc_want;
663	};	828	};
664		829
665	sub cf::attachable::attached {	830	sub cf::attachable::attached {
666	my ($obj, $name) = @_;	831	my ($obj, $name) = @_;
667		832
…		…
840	or return;	1005	or return;
841	$av = eval { (Storable::thaw $av)->{objs} };	1006	$av = eval { (Storable::thaw $av)->{objs} };
842	}	1007	}
843		1008
844	warn sprintf "loading %s (%d)\n",	1009	warn sprintf "loading %s (%d)\n",
845	$filename, length $data, scalar @{$av \|\| []};#d#	1010	$filename, length $data, scalar @{$av \|\| []};
846	return ($data, $av);	1011	return ($data, $av);
847	}	1012	}
		1013
		1014	=head2 COMMAND CALLBACKS
		1015
		1016	=over 4
		1017
		1018	=cut
848		1019
849	#############################################################################	1020	#############################################################################
850	# command handling &c	1021	# command handling &c
851		1022
852	=item cf::register_command $name => \&callback($ob,$args);	1023	=item cf::register_command $name => \&callback($ob,$args);
…		…
865	push @{ $COMMAND{$name} }, [$caller, $cb];	1036	push @{ $COMMAND{$name} }, [$caller, $cb];
866	}	1037	}
867		1038
868	=item cf::register_extcmd $name => \&callback($pl,$packet);	1039	=item cf::register_extcmd $name => \&callback($pl,$packet);
869		1040
870	Register a callbackf ro execution when the client sends an extcmd packet.	1041	Register a callback for execution when the client sends an (synchronous)
		1042	extcmd packet. Ext commands will be processed in the order they are
		1043	received by the server, like other user commands. The first argument is
		1044	the logged-in player. Ext commands can only be processed after a player
		1045	has logged in successfully.
871		1046
872	If the callback returns something, it is sent back as if reply was being	1047	If the callback returns something, it is sent back as if reply was being
873	called.	1048	called.
874		1049
		1050	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1051
		1052	Register a callback for execution when the client sends an (asynchronous)
		1053	exticmd packet. Exti commands are processed by the server as soon as they
		1054	are received, i.e. out of order w.r.t. other commands. The first argument
		1055	is a client socket. Exti commands can be received anytime, even before
		1056	log-in.
		1057
		1058	If the callback returns something, it is sent back as if reply was being
		1059	called.
		1060
875	=cut	1061	=cut
876		1062
877	sub register_extcmd {	1063	sub register_extcmd {
878	my ($name, $cb) = @_;	1064	my ($name, $cb) = @_;
879		1065
880	$EXTCMD{$name} = $cb;	1066	$EXTCMD{$name} = $cb;
		1067	}
		1068
		1069	sub register_exticmd {
		1070	my ($name, $cb) = @_;
		1071
		1072	$EXTICMD{$name} = $cb;
881	}	1073	}
882		1074
883	cf::player->attach (	1075	cf::player->attach (
884	on_command => sub {	1076	on_command => sub {
885	my ($pl, $name, $params) = @_;	1077	my ($pl, $name, $params) = @_;
…		…
894	cf::override;	1086	cf::override;
895	},	1087	},
896	on_extcmd => sub {	1088	on_extcmd => sub {
897	my ($pl, $buf) = @_;	1089	my ($pl, $buf) = @_;
898		1090
899	my $msg = eval { from_json $buf };	1091	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
900		1092
901	if (ref $msg) {	1093	if (ref $msg) {
902	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1094	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
903	if (my %reply = $cb->($pl, $msg)) {	1095	if (my %reply = $cb->($pl, $msg)) {
904	$pl->ext_reply ($msg->{msgid}, %reply);	1096	$pl->ext_reply ($msg->{msgid}, %reply);
…		…
910		1102
911	cf::override;	1103	cf::override;
912	},	1104	},
913	);	1105	);
914		1106
915	sub load_extension {
916	my ($path) = @_;
917
918	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
919	my $base = $1;
920	my $pkg = $1;
921	$pkg =~ s/[^[:word:]]/_/g;
922	$pkg = "ext::$pkg";
923
924	warn "... loading '$path' into '$pkg'\n";
925
926	open my $fh, "<:utf8", $path
927	or die "$path: $!";
928
929	my $source =
930	"package $pkg; use strict; use utf8;\n"
931	. "#line 1 \"$path\"\n{\n"
932	. (do { local $/; <$fh> })
933	. "\n};\n1";
934
935	unless (eval $source) {
936	my $msg = $@ ? "$path: $@\n"
937	: "extension disabled.\n";
938	if ($source =~ /^#!.perl.#.*MANDATORY/m) { # ugly match
939	warn $@;
940	warn "mandatory extension failed to load, exiting.\n";
941	exit 1;
942	}
943	die $@;
944	}
945
946	push @EXTS, $pkg;
947	}
948
949	sub load_extensions {	1107	sub load_extensions {
		1108	cf::sync_job {
		1109	my %todo;
		1110
950	for my $ext (<$LIBDIR/*.ext>) {	1111	for my $path (<$LIBDIR/*.ext>) {
951	next unless -r $ext;	1112	next unless -r $path;
952	eval {	1113
953	load_extension $ext;	1114	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1115	my $base = $1;
		1116	my $pkg = $1;
		1117	$pkg =~ s/[^[:word:]]/_/g;
		1118	$pkg = "ext::$pkg";
		1119
		1120	open my $fh, "<:utf8", $path
		1121	or die "$path: $!";
		1122
		1123	my $source = do { local $/; <$fh> };
		1124
		1125	my %ext = (
		1126	path => $path,
		1127	base => $base,
		1128	pkg => $pkg,
		1129	);
		1130
		1131	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1132	if $source =~ /\A#!.?perl.?#\s(.)$/m;
		1133
		1134	$ext{source} =
		1135	"package $pkg; use strict; use utf8;\n"
		1136	. "#line 1 \"$path\"\n{\n"
		1137	. $source
		1138	. "\n};\n1";
		1139
		1140	$todo{$base} = \%ext;
		1141	}
		1142
		1143	my %done;
		1144	while (%todo) {
		1145	my $progress;
		1146
		1147	while (my ($k, $v) = each %todo) {
		1148	for (split /,\s*/, $v->{meta}{depends}) {
		1149	goto skip
		1150	unless exists $done{$_};
		1151	}
		1152
		1153	warn "... loading '$k' into '$v->{pkg}'\n";
		1154
		1155	unless (eval $v->{source}) {
		1156	my $msg = $@ ? "$v->{path}: $@\n"
		1157	: "$v->{base}: extension inactive.\n";
		1158
		1159	if (exists $v->{meta}{mandatory}) {
		1160	warn $msg;
		1161	warn "mandatory extension failed to load, exiting.\n";
		1162	exit 1;
		1163	}
		1164
		1165	warn $msg;
		1166	}
		1167
		1168	$done{$k} = delete $todo{$k};
		1169	push @EXTS, $v->{pkg};
		1170	$progress = 1;
954	1	1171	}
955	} or warn "$ext not loaded: $@";	1172
		1173	skip:
		1174	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1175	unless $progress;
		1176	}
956	}	1177	};
957	}	1178	}
958		1179
959	#############################################################################	1180	#############################################################################
		1181
		1182	=back
960		1183
961	=head2 CORE EXTENSIONS	1184	=head2 CORE EXTENSIONS
962		1185
963	Functions and methods that extend core crossfire objects.	1186	Functions and methods that extend core crossfire objects.
964		1187
…		…
1152	}	1375	}
1153		1376
1154	\@paths	1377	\@paths
1155	}	1378	}
1156		1379
		1380	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1381
		1382	Expand crossfire pod fragments into protocol xml.
		1383
		1384	=cut
		1385
		1386	sub expand_cfpod {
		1387	((my $self), (local $_)) = @_;
		1388
		1389	# escape & and <
		1390	s/&/&/g;
		1391	s/(?<![BIUGH])</</g;
		1392
		1393	# this is buggy, it needs to properly take care of nested <'s
		1394
		1395	1 while
		1396	# replace B<>, I<>, U<> etc.
		1397	s/B<([^\>]*)>/<b>$1<\/b>/
		1398	\|\| s/I<([^\>]*)>/<i>$1<\/i>/
		1399	\|\| s/U<([^\>]*)>/<u>$1<\/u>/
		1400	# replace G<male\|female> tags
		1401	\|\| s{G<([^>\|])\\|([^>])>}{
		1402	$self->gender ? $2 : $1
		1403	}ge
		1404	# replace H<hint text>
		1405	\|\| s/H<([^\>]*)>/<fg name="lightblue">[$1]<\/fg>/g;
		1406
		1407	# create single paragraphs (very hackish)
		1408	s/(?<=\S)\n(?=\w)/ /g;
		1409
		1410	$_
		1411	}
		1412
1157	=item $player->ext_reply ($msgid, %msg)	1413	=item $player->ext_reply ($msgid, %msg)
1158		1414
1159	Sends an ext reply to the player.	1415	Sends an ext reply to the player.
1160		1416
1161	=cut	1417	=cut
1162		1418
1163	sub ext_reply($$%) {	1419	sub ext_reply($$%) {
1164	my ($self, $id, %msg) = @_;	1420	my ($self, $id, %msg) = @_;
1165		1421
1166	$msg{msgid} = $id;	1422	$msg{msgid} = $id;
1167		1423	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
1168	$self->send ("ext " . cf::to_json \%msg);
1169	}	1424	}
1170		1425
1171	=item $player->ext_event ($type, %msg)	1426	=item $player->ext_event ($type, %msg)
1172		1427
1173	Sends an ext event to the client.	1428	Sends an ext event to the client.
…		…
1188		1443
1189	package cf::region;	1444	package cf::region;
1190		1445
1191	=item cf::region::find_by_path $path	1446	=item cf::region::find_by_path $path
1192		1447
1193	Tries to decuce the probable region for a map knowing only its path.	1448	Tries to decuce the likely region for a map knowing only its path.
1194		1449
1195	=cut	1450	=cut
1196		1451
1197	sub find_by_path($) {	1452	sub find_by_path($) {
1198	my ($path) = @_;	1453	my ($path) = @_;
…		…
1272	my ($self, $merge) = @_;	1527	my ($self, $merge) = @_;
1273		1528
1274	# we have to keep some variables in memory intact	1529	# we have to keep some variables in memory intact
1275	local $self->{path};	1530	local $self->{path};
1276	local $self->{load_path};	1531	local $self->{load_path};
1277	local $self->{deny_save};
1278	local $self->{deny_reset};
1279		1532
1280	$self->SUPER::thawer_merge ($merge);	1533	$self->SUPER::thawer_merge ($merge);
1281	}	1534	}
1282		1535
1283	sub normalise {	1536	sub normalise {
…		…
1383		1636
1384	$_->change_map_light ($change)	1637	$_->change_map_light ($change)
1385	for grep $_->outdoor, values %cf::MAP;	1638	for grep $_->outdoor, values %cf::MAP;
1386	}	1639	}
1387		1640
		1641	sub decay_objects {
		1642	my ($self) = @_;
		1643
		1644	return if $self->{deny_reset};
		1645
		1646	$self->do_decay_objects;
		1647	}
		1648
1388	sub unlink_save {	1649	sub unlink_save {
1389	my ($self) = @_;	1650	my ($self) = @_;
1390		1651
1391	utf8::encode (my $save = $self->save_path);	1652	utf8::encode (my $save = $self->save_path);
1392	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;	1653	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
…		…
1448	$self->load_header_orig	1709	$self->load_header_orig
1449	or return;	1710	or return;
1450	$self->prepare_orig;	1711	$self->prepare_orig;
1451	}	1712	}
1452		1713
		1714	$self->{deny_reset} = 1
		1715	if $self->no_reset;
		1716
1453	$self->default_region (cf::region::find_by_path $self->{path})	1717	$self->default_region (cf::region::find_by_path $self->{path})
1454	unless $self->default_region;	1718	unless $self->default_region;
1455		1719
1456	1	1720	1
1457	}	1721	}
…		…
1472	$map->{last_save} = $cf::RUNTIME;	1736	$map->{last_save} = $cf::RUNTIME;
1473		1737
1474	$map->load_header	1738	$map->load_header
1475	or return;	1739	or return;
1476		1740
1477	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	1741	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1478	# doing this can freeze the server in a sync job, obviously	1742	# doing this can freeze the server in a sync job, obviously
1479	#$cf::WAIT_FOR_TICK->wait;	1743	#$cf::WAIT_FOR_TICK->wait;
1480	$map->reset;	1744	$map->reset;
1481	undef $guard;	1745	undef $guard;
1482	return find $path;	1746	return find $path;
…		…
1549	my ($self, $ob) = @_;	1813	my ($self, $ob) = @_;
1550		1814
1551	return find "~" . $ob->name . "/" . $self->{path}	1815	return find "~" . $ob->name . "/" . $self->{path}
1552	if $self->per_player;	1816	if $self->per_player;
1553		1817
		1818	# return find "?party/" . $ob->name . "/" . $self->{path}
		1819	# if $self->per_party;
		1820
1554	$self	1821	$self
1555	}	1822	}
1556		1823
1557	# find and load all maps in the 3x3 area around a map	1824	# find and load all maps in the 3x3 area around a map
1558	sub load_diag {	1825	sub load_diag {
…		…
1668		1935
1669	sub reset_at {	1936	sub reset_at {
1670	my ($self) = @_;	1937	my ($self) = @_;
1671		1938
1672	# TODO: safety, remove and allow resettable per-player maps	1939	# TODO: safety, remove and allow resettable per-player maps
1673	return 1e99 if $self->isa ("ext::map_per_player");#d#
1674	return 1e99 if $self->{deny_reset};	1940	return 1e99 if $self->{deny_reset};
1675		1941
1676	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	1942	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1677	my $to = List::Util::min $MAX_RESET, $self->reset_timeout \|\| $DEFAULT_RESET;	1943	my $to = List::Util::min $MAX_RESET, $self->reset_timeout \|\| $DEFAULT_RESET;
1678		1944
…		…
1689	my ($self) = @_;	1955	my ($self) = @_;
1690		1956
1691	my $lock = cf::lock_acquire "map_data:$self->{path}";	1957	my $lock = cf::lock_acquire "map_data:$self->{path}";
1692		1958
1693	return if $self->players;	1959	return if $self->players;
1694	return if $self->isa ("ext::map_per_player");#d#
1695		1960
1696	warn "resetting map ", $self->path;#d#	1961	warn "resetting map ", $self->path;
1697		1962
1698	$self->in_memory (cf::MAP_SWAPPED);	1963	$self->in_memory (cf::MAP_SWAPPED);
1699		1964
1700	# need to save uniques path	1965	# need to save uniques path
1701	unless ($self->{deny_save}) {	1966	unless ($self->{deny_save}) {
…		…
1733	$cf::MAP{$self->path} = $self;	1998	$cf::MAP{$self->path} = $self;
1734		1999
1735	$self->reset; # polite request, might not happen	2000	$self->reset; # polite request, might not happen
1736	}	2001	}
1737		2002
		2003	=item $maps = cf::map::tmp_maps
		2004
		2005	Returns an arrayref with all map paths of currently instantiated and saved
		2006	maps. May block.
		2007
		2008	=cut
		2009
		2010	sub tmp_maps() {
		2011	[
		2012	map {
		2013	utf8::decode $_;
		2014	/\.map$/
		2015	? normalise $_
		2016	: ()
		2017	} @{ aio_readdir $TMPDIR or [] }
		2018	]
		2019	}
		2020
		2021	=item $maps = cf::map::random_maps
		2022
		2023	Returns an arrayref with all map paths of currently instantiated and saved
		2024	random maps. May block.
		2025
		2026	=cut
		2027
		2028	sub random_maps() {
		2029	[
		2030	map {
		2031	utf8::decode $_;
		2032	/\.map$/
		2033	? normalise "?random/$_"
		2034	: ()
		2035	} @{ aio_readdir $RANDOMDIR or [] }
		2036	]
		2037	}
		2038
1738	=item cf::map::unique_maps	2039	=item cf::map::unique_maps
1739		2040
1740	Returns an arrayref of paths of all shared maps that have	2041	Returns an arrayref of paths of all shared maps that have
1741	instantiated unique items. May block.	2042	instantiated unique items. May block.
1742		2043
1743	=cut	2044	=cut
1744		2045
1745	sub unique_maps() {	2046	sub unique_maps() {
1746	my $files = aio_readdir $UNIQUEDIR	2047	[
1747	or return;	2048	map {
1748
1749	my @paths;
1750
1751	for (@$files) {
1752	utf8::decode $_;	2049	utf8::decode $_;
1753	next if /\.pst$/;	2050	/\.map$/
1754	next unless /^$PATH_SEP/o;	2051	? normalise $_
1755		2052	: ()
1756	push @paths, cf::map::normalise $_;	2053	} @{ aio_readdir $UNIQUEDIR or [] }
1757	}	2054	]
1758
1759	\@paths
1760	}	2055	}
1761		2056
1762	package cf;	2057	package cf;
1763		2058
1764	=back	2059	=back
…		…
1810		2105
1811	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;	2106	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
1812		2107
1813	if ($self->{record_replies}) {	2108	if ($self->{record_replies}) {
1814	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2109	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2110
1815	} else {	2111	} else {
		2112	my $pl = $self->contr;
		2113
		2114	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2115	my $diag = $pl->{npc_dialog};
		2116	$diag->{pl}->ext_reply (
		2117	$diag->{id},
		2118	msgtype => "reply",
		2119	msg => $diag->{pl}->expand_cfpod ($msg),
		2120	add_topics => []
		2121	);
		2122
		2123	} else {
1816	$msg = $npc->name . " says: $msg" if $npc;	2124	$msg = $npc->name . " says: $msg" if $npc;
1817	$self->message ($msg, $flags);	2125	$self->message ($msg, $flags);
		2126	}
1818	}	2127	}
1819	}	2128	}
1820		2129
1821	=item $player_object->may ("access")	2130	=item $player_object->may ("access")
1822		2131
…		…
1870	$self->deactivate_recursive;	2179	$self->deactivate_recursive;
1871		2180
1872	return if UNIVERSAL::isa $self->map, "ext::map_link";	2181	return if UNIVERSAL::isa $self->map, "ext::map_link";
1873		2182
1874	$self->{_link_pos} \|\|= [$self->map->{path}, $self->x, $self->y]	2183	$self->{_link_pos} \|\|= [$self->map->{path}, $self->x, $self->y]
1875	if $self->map;	2184	if $self->map && $self->map->{path} ne "{link}";
1876		2185
1877	$self->enter_map ($LINK_MAP \|\| link_map, 10, 10);	2186	$self->enter_map ($LINK_MAP \|\| link_map, 10, 10);
1878	}	2187	}
1879		2188
1880	sub cf::object::player::leave_link {	2189	sub cf::object::player::leave_link {
1881	my ($self, $map, $x, $y) = @_;	2190	my ($self, $map, $x, $y) = @_;
		2191
		2192	return unless $self->contr->active;
1882		2193
1883	my $link_pos = delete $self->{_link_pos};	2194	my $link_pos = delete $self->{_link_pos};
1884		2195
1885	unless ($map) {	2196	unless ($map) {
1886	# restore original map position	2197	# restore original map position
…		…
1909		2220
1910	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2221	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1911	$self->enter_map ($map, $x, $y);	2222	$self->enter_map ($map, $x, $y);
1912	}	2223	}
1913		2224
1914	cf::player->attach (
1915	on_logout => sub {
1916	my ($pl) = @_;
1917
1918	# abort map switching before logout
1919	if ($pl->ob->{_link_pos}) {
1920	cf::sync_job {
1921	$pl->ob->leave_link
1922	};
1923	}
1924	},
1925	on_login => sub {
1926	my ($pl) = @_;
1927
1928	# try to abort aborted map switching on player login :)
1929	# should happen only on crashes
1930	if ($pl->ob->{_link_pos}) {
1931	$pl->ob->enter_link;
1932	(async {
1933	$pl->ob->reply (undef,
1934	"There was an internal problem at your last logout, "
1935	. "the server will try to bring you to your intended destination in a second.",
1936	cf::NDI_RED);
1937	# we need this sleep as the login has a concurrent enter_exit running
1938	# and this sleep increases chances of the player not ending up in scorn
1939	Coro::Timer::sleep 1;
1940	$pl->ob->leave_link;
1941	})->prio (2);
1942	}
1943	},
1944	);
1945
1946	=item $player_object->goto ($path, $x, $y)	2225	=item $player_object->goto ($path, $x, $y[, $check->($map)])
1947		2226
		2227	Moves the player to the given map-path and coordinates by first freezing
		2228	her, loading and preparing them map, calling the provided $check callback
		2229	that has to return the map if sucecssful, and then unfreezes the player on
		2230	the new (success) or old (failed) map position.
		2231
1948	=cut	2232	=cut
		2233
		2234	our $GOTOGEN;
1949		2235
1950	sub cf::object::player::goto {	2236	sub cf::object::player::goto {
1951	my ($self, $path, $x, $y) = @_;	2237	my ($self, $path, $x, $y, $check) = @_;
		2238
		2239	# do generation counting so two concurrent goto's will be executed in-order
		2240	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1952		2241
1953	$self->enter_link;	2242	$self->enter_link;
1954		2243
1955	(async {	2244	(async {
1956	my $map = eval {	2245	my $map = eval {
1957	my $map = cf::map::find $path;	2246	my $map = cf::map::find $path;
		2247
		2248	if ($map) {
1958	$map = $map->customise_for ($self) if $map;	2249	$map = $map->customise_for ($self);
		2250	$map = $check->($map) if $check && $map;
		2251	} else {
		2252	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
		2253	}
		2254
1959	$map	2255	$map
		2256	};
		2257
		2258	if ($@) {
		2259	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE \| cf::NDI_RED);
		2260	LOG llevError \| logBacktrace, Carp::longmess $@;
1960	} or	2261	}
1961	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
1962		2262
		2263	if ($gen == $self->{_goto_generation}) {
		2264	delete $self->{_goto_generation};
1963	$self->leave_link ($map, $x, $y);	2265	$self->leave_link ($map, $x, $y);
		2266	}
1964	})->prio (1);	2267	})->prio (1);
1965	}	2268	}
1966		2269
1967	=item $player_object->enter_exit ($exit_object)	2270	=item $player_object->enter_exit ($exit_object)
1968		2271
…		…
2073		2376
2074	utf8::encode $text;	2377	utf8::encode $text;
2075	$self->send_packet (sprintf "drawinfo %d %s", $flags \|\| cf::NDI_BLACK, $text);	2378	$self->send_packet (sprintf "drawinfo %d %s", $flags \|\| cf::NDI_BLACK, $text);
2076	}	2379	}
2077		2380
		2381	=item $client->send_msg ($color, $type, $msg, [extra...])
		2382
		2383	Send a drawinfo or msg packet to the client, formatting the msg for the
		2384	client if neccessary. C<$type> should be a string identifying the type of
		2385	the message, with C<log> being the default. If C<$color> is negative, suppress
		2386	the message unless the client supports the msg packet.
		2387
		2388	=cut
		2389
		2390	sub cf::client::send_msg {
		2391	my ($self, $color, $type, $msg, @extra) = @_;
		2392
		2393	$msg = $self->pl->expand_cfpod ($msg);
		2394
		2395	if ($self->can_msg) {
		2396	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2397	} else {
		2398	# replace some tags by gcfclient-compatible ones
		2399	for ($msg) {
		2400	1 while
		2401	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2402	\|\| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2403	\|\| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2404	\|\| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2405	\|\| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2406	}
		2407
		2408	if ($color >= 0) {
		2409	if (0 && $msg =~ /\[/) {
		2410	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2411	} else {
		2412	$msg =~ s/\[\/?(?:b\|i\|u\|fixed\|color)[^\]]*\]//g;
		2413	$self->send_packet ("drawinfo $color $msg")
		2414	}
		2415	}
		2416	}
		2417	}
		2418
2078	=item $client->ext_event ($type, %msg)	2419	=item $client->ext_event ($type, %msg)
2079		2420
2080	Sends an exti event to the client.	2421	Sends an ext event to the client.
2081		2422
2082	=cut	2423	=cut
2083		2424
2084	sub cf::client::ext_event($$%) {	2425	sub cf::client::ext_event($$%) {
2085	my ($self, $type, %msg) = @_;	2426	my ($self, $type, %msg) = @_;
2086		2427
2087	$msg{msgtype} = "event_$type";	2428	$msg{msgtype} = "event_$type";
2088	$self->send_packet ("ext " . cf::to_json \%msg);	2429	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
2089	}	2430	}
2090		2431
2091	=item $success = $client->query ($flags, "text", \&cb)	2432	=item $success = $client->query ($flags, "text", \&cb)
2092		2433
2093	Queues a query to the client, calling the given callback with	2434	Queues a query to the client, calling the given callback with
2094	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2435	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2095	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2436	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2096		2437
2097	Queries can fail, so check the return code. Or don't, as queries will become	2438	Queries can fail, so check the return code. Or don't, as queries will
2098	reliable at some point in the future.	2439	become reliable at some point in the future.
2099		2440
2100	=cut	2441	=cut
2101		2442
2102	sub cf::client::query {	2443	sub cf::client::query {
2103	my ($self, $flags, $text, $cb) = @_;	2444	my ($self, $flags, $text, $cb) = @_;
…		…
2111	utf8::encode $text;	2452	utf8::encode $text;
2112	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2453	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2113		2454
2114	$self->send_packet ($self->{query_queue}[0][0])	2455	$self->send_packet ($self->{query_queue}[0][0])
2115	if @{ $self->{query_queue} } == 1;	2456	if @{ $self->{query_queue} } == 1;
		2457
		2458	1
2116	}	2459	}
2117		2460
2118	cf::client->attach (	2461	cf::client->attach (
		2462	on_connect => sub {
		2463	my ($ns) = @_;
		2464
		2465	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2466	},
2119	on_reply => sub {	2467	on_reply => sub {
2120	my ($ns, $msg) = @_;	2468	my ($ns, $msg) = @_;
2121		2469
2122	# this weird shuffling is so that direct followup queries	2470	# this weird shuffling is so that direct followup queries
2123	# get handled first	2471	# get handled first
…		…
2134	$ns->send_packet ($ns->{query_queue}[0][0]);	2482	$ns->send_packet ($ns->{query_queue}[0][0]);
2135	} else {	2483	} else {
2136	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2484	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2137	}	2485	}
2138	}	2486	}
		2487	},
		2488	on_exticmd => sub {
		2489	my ($ns, $buf) = @_;
		2490
		2491	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2492
		2493	if (ref $msg) {
		2494	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2495	if (my %reply = $cb->($ns, $msg)) {
		2496	$reply{msgid} = $msg->{msgid};
		2497	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2498	}
		2499	}
		2500	} else {
		2501	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2502	}
		2503
		2504	cf::override;
2139	},	2505	},
2140	);	2506	);
2141		2507
2142	=item $client->async (\&cb)	2508	=item $client->async (\&cb)
2143		2509
…		…
2282	=back	2648	=back
2283		2649
2284	=cut	2650	=cut
2285		2651
2286	#############################################################################	2652	#############################################################################
2287
2288	=head2 EXTENSION DATABASE SUPPORT
2289
2290	Crossfire maintains a very simple database for extension use. It can
2291	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2292	convert to/from binary).
2293
2294	The parameter C<$family> should best start with the name of the extension
2295	using it, it should be unique.
2296
2297	=over 4
2298
2299	=item $value = cf::db_get $family => $key
2300
2301	Returns a single value from the database.
2302
2303	=item cf::db_put $family => $key => $value
2304
2305	Stores the given C<$value> in the family.
2306
2307	=cut
2308
2309	our $DB;
2310
2311	sub db_init {
2312	unless ($DB) {
2313	$DB = BDB::db_create $DB_ENV;
2314
2315	cf::sync_job {
2316	eval {
2317	$DB->set_flags (BDB::CHKSUM);
2318
2319	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2320	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
2321	cf::cleanup "db_open(db): $!" if $!;
2322	};
2323	cf::cleanup "db_open(db): $@" if $@;
2324	};
2325	}
2326	}
2327
2328	sub db_get($$) {
2329	my $key = "$_[0]/$_[1]";
2330
2331	cf::sync_job {
2332	BDB::db_get $DB, undef, $key, my $data;
2333
2334	$! ? ()
2335	: $data
2336	}
2337	}
2338
2339	sub db_put($$$) {
2340	BDB::dbreq_pri 4;
2341	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2342	}
2343
2344	=item cf::cache $id => [$paths...], $processversion => $process
2345
2346	Generic caching function that returns the value of the resource $id,
2347	caching and regenerating as required.
2348
2349	This function can block.
2350
2351	=cut
2352
2353	sub cache {
2354	my ($id, $src, $processversion, $process) = @_;
2355
2356	my $meta =
2357	join "\x00",
2358	$processversion,
2359	map {
2360	aio_stat $_
2361	and Carp::croak "$_: $!";
2362
2363	($_, (stat _)[7,9])
2364	} @$src;
2365
2366	my $dbmeta = db_get cache => "$id/meta";
2367	if ($dbmeta ne $meta) {
2368	# changed, we may need to process
2369
2370	my @data;
2371	my $md5;
2372
2373	for (0 .. $#$src) {
2374	0 <= aio_load $src->[$_], $data[$_]
2375	or Carp::croak "$src->[$_]: $!";
2376	}
2377
2378	# if processing is expensive, check
2379	# checksum first
2380	if (1) {
2381	$md5 =
2382	join "\x00",
2383	$processversion,
2384	map {
2385	Coro::cede;
2386	($src->[$_], Digest::MD5::md5_hex $data[$_])
2387	} 0.. $#$src;
2388
2389
2390	my $dbmd5 = db_get cache => "$id/md5";
2391	if ($dbmd5 eq $md5) {
2392	db_put cache => "$id/meta", $meta;
2393
2394	return db_get cache => "$id/data";
2395	}
2396	}
2397
2398	my $t1 = Time::HiRes::time;
2399	my $data = $process->(\@data);
2400	my $t2 = Time::HiRes::time;
2401
2402	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2403
2404	db_put cache => "$id/data", $data;
2405	db_put cache => "$id/md5" , $md5;
2406	db_put cache => "$id/meta", $meta;
2407
2408	return $data;
2409	}
2410
2411	db_get cache => "$id/data"
2412	}
2413
2414	=item fork_call { }, $args
2415
2416	Executes the given code block with the given arguments in a seperate
2417	process, returning the results. Everything must be serialisable with
2418	Coro::Storable. May, of course, block. Note that the executed sub may
2419	never block itself or use any form of Event handling.
2420
2421	=cut
2422
2423	sub fork_call(&@) {
2424	my ($cb, @args) = @_;
2425
2426	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2427	# or die "socketpair: $!";
2428	pipe my $fh1, my $fh2
2429	or die "pipe: $!";
2430
2431	if (my $pid = fork) {
2432	close $fh2;
2433
2434	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2435	$res = Coro::Storable::thaw $res;
2436
2437	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2438
2439	die $$res unless "ARRAY" eq ref $res;
2440
2441	return wantarray ? @$res : $res->[-1];
2442	} else {
2443	reset_signals;
2444	local $SIG{__WARN__};
2445	local $SIG{__DIE__};
2446	eval {
2447	close $fh1;
2448
2449	my @res = eval { $cb->(@args) };
2450	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2451	};
2452
2453	warn $@ if $@;
2454	_exit 0;
2455	}
2456	}
2457
2458
2459
2460	#############################################################################
2461	# the server's init and main functions	2653	# the server's init and main functions
2462		2654
2463	sub load_facedata($) {	2655	sub load_facedata($) {
2464	my ($path) = @_;	2656	my ($path) = @_;
2465		2657
…		…
2523	}	2715	}
2524		2716
2525	sub reload_archetypes {	2717	sub reload_archetypes {
2526	load_resource_file "$DATADIR/archetypes"	2718	load_resource_file "$DATADIR/archetypes"
2527	or die "unable to load archetypes\n";	2719	or die "unable to load archetypes\n";
		2720	#d# NEED to laod twice to resolve forward references
		2721	# this really needs to be done in an extra post-pass
		2722	# (which needs to be synchronous, so solve it differently)
		2723	load_resource_file "$DATADIR/archetypes"
		2724	or die "unable to load archetypes\n";
2528	}	2725	}
2529		2726
2530	sub reload_treasures {	2727	sub reload_treasures {
2531	load_resource_file "$DATADIR/treasures"	2728	load_resource_file "$DATADIR/treasures"
2532	or die "unable to load treasurelists\n";	2729	or die "unable to load treasurelists\n";
…		…
2535	sub reload_resources {	2732	sub reload_resources {
2536	warn "reloading resource files...\n";	2733	warn "reloading resource files...\n";
2537		2734
2538	reload_regions;	2735	reload_regions;
2539	reload_facedata;	2736	reload_facedata;
		2737	#reload_archetypes;#d#
2540	reload_archetypes;	2738	reload_archetypes;
2541	reload_treasures;	2739	reload_treasures;
2542		2740
2543	warn "finished reloading resource files\n";	2741	warn "finished reloading resource files\n";
2544	}	2742	}
…		…
2601	},	2799	},
2602	);	2800	);
2603	}	2801	}
2604	}	2802	}
2605		2803
		2804	sub write_runtime {
		2805	my $runtime = "$LOCALDIR/runtime";
		2806
		2807	# first touch the runtime file to show we are still running:
		2808	# the fsync below can take a very very long time.
		2809
		2810	IO::AIO::aio_utime $runtime, undef, undef;
		2811
		2812	my $guard = cf::lock_acquire "write_runtime";
		2813
		2814	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
		2815	or return;
		2816
		2817	my $value = $cf::RUNTIME + 90 + 10;
		2818	# 10 is the runtime save interval, for a monotonic clock
		2819	# 60 allows for the watchdog to kill the server.
		2820
		2821	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2822	and return;
		2823
		2824	# always fsync - this file is important
		2825	aio_fsync $fh
		2826	and return;
		2827
		2828	# touch it again to show we are up-to-date
		2829	aio_utime $fh, undef, undef;
		2830
		2831	close $fh
		2832	or return;
		2833
		2834	aio_rename "$runtime~", $runtime
		2835	and return;
		2836
		2837	warn "runtime file written.\n";
		2838
		2839	1
		2840	}
		2841
2606	sub emergency_save() {	2842	sub emergency_save() {
2607	my $freeze_guard = cf::freeze_mainloop;	2843	my $freeze_guard = cf::freeze_mainloop;
2608		2844
2609	warn "enter emergency perl save\n";	2845	warn "enter emergency perl save\n";
2610		2846
…		…
2685	%EXT_CORO = ();	2921	%EXT_CORO = ();
2686		2922
2687	warn "removing commands";	2923	warn "removing commands";
2688	%COMMAND = ();	2924	%COMMAND = ();
2689		2925
2690	warn "removing ext commands";	2926	warn "removing ext/exti commands";
2691	%EXTCMD = ();	2927	%EXTCMD = ();
		2928	%EXTICMD = ();
2692		2929
2693	warn "unloading/nuking all extensions";	2930	warn "unloading/nuking all extensions";
2694	for my $pkg (@EXTS) {	2931	for my $pkg (@EXTS) {
2695	warn "... unloading $pkg";	2932	warn "... unloading $pkg";
2696		2933
…		…
2814	my $signal = new Coro::Signal;	3051	my $signal = new Coro::Signal;
2815	push @WAIT_FOR_TICK_BEGIN, $signal;	3052	push @WAIT_FOR_TICK_BEGIN, $signal;
2816	$signal->wait;	3053	$signal->wait;
2817	}	3054	}
2818		3055
		3056	my $min = 1e6;#d#
		3057	my $avg = 10;
2819	$TICK_WATCHER = Event->timer (	3058	$TICK_WATCHER = Event->timer (
2820	reentrant => 0,	3059	reentrant => 0,
2821	parked => 1,	3060	parked => 1,
2822	prio => 0,	3061	prio => 0,
2823	at => $NEXT_TICK \|\| $TICK,	3062	at => $NEXT_TICK \|\| $TICK,
…		…
2827	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"	3066	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2828	unless ++$bug_warning > 10;	3067	unless ++$bug_warning > 10;
2829	return;	3068	return;
2830	}	3069	}
2831		3070
2832	$NOW = Event::time;	3071	$NOW = $tick_start = Event::time;
2833		3072
2834	cf::server_tick; # one server iteration	3073	cf::server_tick; # one server iteration
		3074
		3075	0 && sync_job {#d#
		3076	for(1..10) {
		3077	my $t = Event::time;
		3078	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3079	or die;
		3080
		3081	$map->width (50);
		3082	$map->height (50);
		3083	$map->alloc;
		3084	$map->_load_objects ("/tmp/x.map", 1);
		3085	my $t = Event::time - $t;
		3086
		3087	#next unless $t < 0.0013;#d#
		3088	if ($t < $min) {
		3089	$min = $t;
		3090	}
		3091	$avg = $avg * 0.99 + $t * 0.01;
		3092	}
		3093	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3094	exit 0;
		3095	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		3096	};
2835		3097
2836	$RUNTIME += $TICK;	3098	$RUNTIME += $TICK;
2837	$NEXT_TICK += $TICK;	3099	$NEXT_TICK += $TICK;
2838		3100
2839	if ($NOW >= $NEXT_RUNTIME_WRITE) {	3101	if ($NOW >= $NEXT_RUNTIME_WRITE) {
…		…
2845	}	3107	}
2846		3108
2847	# my $AFTER = Event::time;	3109	# my $AFTER = Event::time;
2848	# warn $AFTER - $NOW;#d#	3110	# warn $AFTER - $NOW;#d#
2849		3111
		3112	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3113	$sig->send;
		3114	}
		3115	while (my $sig = shift @WAIT_FOR_TICK) {
		3116	$sig->send;
		3117	}
		3118
		3119	$NOW = Event::time;
		3120
2850	# if we are delayed by four ticks or more, skip them all	3121	# if we are delayed by four ticks or more, skip them all
2851	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	3122	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2852		3123
2853	$TICK_WATCHER->at ($NEXT_TICK);	3124	$TICK_WATCHER->at ($NEXT_TICK);
2854	$TICK_WATCHER->start;	3125	$TICK_WATCHER->start;
2855		3126
2856	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {	3127	$LOAD = ($NOW - $tick_start) / $TICK;
2857	$sig->send;	3128	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
2858	}
2859	while (my $sig = shift @WAIT_FOR_TICK) {
2860	$sig->send;
2861	}
2862		3129
2863	_post_tick;	3130	_post_tick;
		3131
		3132
2864	},	3133	},
2865	);	3134	);
2866		3135
2867	{	3136	{
2868	BDB::max_poll_time $TICK * 0.1;	3137	BDB::max_poll_time $TICK * 0.1;

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.263 by root, Sat May 5 05:40:27 2007 UTC vs. Revision 1.290 by root, Mon Jul 2 03:15:30 2007 UTC

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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.263 by root, Sat May 5 05:40:27 2007 UTC vs.
Revision 1.290 by root, Mon Jul 2 03:15:30 2007 UTC