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

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.256 by root, Sat Apr 21 16:56:32 2007 UTC vs.
Revision 1.288 by root, Mon Jun 25 07:40:53 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 $json_coder = JSON::XS->new->convert_blessed->utf8->max_size (1e6); # accept ~1mb max
		254
		255	sub to_json ($) { $json_coder->encode ($_[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	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644	412	=cut
377	or return;
378		413
379	my $value = $cf::RUNTIME + 90 + 10;	414	sub fork_call(&@) {
380	# 10 is the runtime save interval, for a monotonic clock	415	my ($cb, @args) = @_;
381	# 60 allows for the watchdog to kill the server.
382		416
383	(aio_write $fh, 0, (length $value), $value, 0) <= 0	417	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
384	and return;	418	# or die "socketpair: $!";
		419	pipe my $fh1, my $fh2
		420	or die "pipe: $!";
385		421
386	# always fsync - this file is important	422	if (my $pid = fork) {
387	aio_fsync $fh
388	and return;
389
390	close $fh	423	close $fh2;
391	or return;
392		424
393	aio_rename "$runtime~", $runtime	425	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
394	and return;	426	$res = Coro::Storable::thaw $res;
395		427
		428	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		429
		430	die $$res unless "ARRAY" eq ref $res;
		431
		432	return wantarray ? @$res : $res->[-1];
		433	} else {
		434	reset_signals;
		435	local $SIG{__WARN__};
		436	local $SIG{__DIE__};
		437	eval {
		438	close $fh1;
		439
		440	my @res = eval { $cb->(@args) };
		441	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		442	};
		443
		444	warn $@ if $@;
		445	_exit 0;
396	1	446	}
		447	}
		448
		449	=item $value = cf::db_get $family => $key
		450
		451	Returns a single value from the environment database.
		452
		453	=item cf::db_put $family => $key => $value
		454
		455	Stores the given C<$value> in the family. It can currently store binary
		456	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		457
		458	=cut
		459
		460	our $DB;
		461
		462	sub db_init {
		463	unless ($DB) {
		464	$DB = BDB::db_create $DB_ENV;
		465
		466	cf::sync_job {
		467	eval {
		468	$DB->set_flags (BDB::CHKSUM);
		469
		470	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		471	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
		472	cf::cleanup "db_open(db): $!" if $!;
		473	};
		474	cf::cleanup "db_open(db): $@" if $@;
		475	};
		476	}
		477	}
		478
		479	sub db_get($$) {
		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"
397	}	563	}
398		564
399	=item cf::datalog type => key => value, ...	565	=item cf::datalog type => key => value, ...
400		566
401	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.
…		…
419	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")
420	to it. All such attachable objects support the following methods.	586	to it. All such attachable objects support the following methods.
421		587
422	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>
423	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
424	crossfire+).	590	Crossfire TRT).
425		591
426	=over 4	592	=over 4
427		593
428	=item $attachable->attach ($attachment, key => $value...)	594	=item $attachable->attach ($attachment, key => $value...)
429		595
…		…
592	$registry = $CB_TYPE[$object_type] \|\|= [];	758	$registry = $CB_TYPE[$object_type] \|\|= [];
593		759
594	} elsif ($type eq "subtype") {	760	} elsif ($type eq "subtype") {
595	defined $object_type or Carp::croak "subtype specified without type";	761	defined $object_type or Carp::croak "subtype specified without type";
596	my $object_subtype = shift @arg;	762	my $object_subtype = shift @arg;
597	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] \|\|= [];	763	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] \|\|= [];
598		764
599	} elsif ($type eq "package") {	765	} elsif ($type eq "package") {
600	my $pkg = shift @arg;	766	my $pkg = shift @arg;
601		767
602	while (my ($name, $id) = each %cb_id) {	768	while (my ($name, $id) = each %cb_id) {
…		…
631	_attach $registry, $klass, @attach;	797	_attach $registry, $klass, @attach;
632	}	798	}
633		799
634	$obj->{$name} = \%arg;	800	$obj->{$name} = \%arg;
635	} else {	801	} else {
636	warn "object uses attachment '$name' that is not available, postponing.\n";	802	warn "object uses attachment '$name' which is not available, postponing.\n";
637	}	803	}
638		804
639	$obj->{_attachment}{$name} = undef;	805	$obj->{_attachment}{$name} = undef;
640	}	806	}
641		807
…		…
643	if (ref $_[0]) {	809	if (ref $_[0]) {
644	_object_attach @_;	810	_object_attach @_;
645	} else {	811	} else {
646	_attach shift->_attach_registry, @_;	812	_attach shift->_attach_registry, @_;
647	}	813	}
		814	_recalc_want;
648	};	815	};
649		816
650	# all those should be optimised	817	# all those should be optimised
651	sub cf::attachable::detach {	818	sub cf::attachable::detach {
652	my ($obj, $name) = @_;	819	my ($obj, $name) = @_;
…		…
655	delete $obj->{_attachment}{$name};	822	delete $obj->{_attachment}{$name};
656	reattach ($obj);	823	reattach ($obj);
657	} else {	824	} else {
658	Carp::croak "cannot, currently, detach class attachments";	825	Carp::croak "cannot, currently, detach class attachments";
659	}	826	}
		827	_recalc_want;
660	};	828	};
661		829
662	sub cf::attachable::attached {	830	sub cf::attachable::attached {
663	my ($obj, $name) = @_;	831	my ($obj, $name) = @_;
664		832
…		…
837	or return;	1005	or return;
838	$av = eval { (Storable::thaw $av)->{objs} };	1006	$av = eval { (Storable::thaw $av)->{objs} };
839	}	1007	}
840		1008
841	warn sprintf "loading %s (%d)\n",	1009	warn sprintf "loading %s (%d)\n",
842	$filename, length $data, scalar @{$av \|\| []};#d#	1010	$filename, length $data, scalar @{$av \|\| []};
843	return ($data, $av);	1011	return ($data, $av);
844	}	1012	}
		1013
		1014	=head2 COMMAND CALLBACKS
		1015
		1016	=over 4
		1017
		1018	=cut
845		1019
846	#############################################################################	1020	#############################################################################
847	# command handling &c	1021	# command handling &c
848		1022
849	=item cf::register_command $name => \&callback($ob,$args);	1023	=item cf::register_command $name => \&callback($ob,$args);
…		…
862	push @{ $COMMAND{$name} }, [$caller, $cb];	1036	push @{ $COMMAND{$name} }, [$caller, $cb];
863	}	1037	}
864		1038
865	=item cf::register_extcmd $name => \&callback($pl,$packet);	1039	=item cf::register_extcmd $name => \&callback($pl,$packet);
866		1040
867	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.
868		1046
869	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
870	called.	1048	called.
871		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
872	=cut	1061	=cut
873		1062
874	sub register_extcmd {	1063	sub register_extcmd {
875	my ($name, $cb) = @_;	1064	my ($name, $cb) = @_;
876		1065
877	$EXTCMD{$name} = $cb;	1066	$EXTCMD{$name} = $cb;
		1067	}
		1068
		1069	sub register_exticmd {
		1070	my ($name, $cb) = @_;
		1071
		1072	$EXTICMD{$name} = $cb;
878	}	1073	}
879		1074
880	cf::player->attach (	1075	cf::player->attach (
881	on_command => sub {	1076	on_command => sub {
882	my ($pl, $name, $params) = @_;	1077	my ($pl, $name, $params) = @_;
…		…
907		1102
908	cf::override;	1103	cf::override;
909	},	1104	},
910	);	1105	);
911		1106
912	sub load_extension {
913	my ($path) = @_;
914
915	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
916	my $base = $1;
917	my $pkg = $1;
918	$pkg =~ s/[^[:word:]]/_/g;
919	$pkg = "ext::$pkg";
920
921	warn "... loading '$path' into '$pkg'\n";
922
923	open my $fh, "<:utf8", $path
924	or die "$path: $!";
925
926	my $source =
927	"package $pkg; use strict; use utf8;\n"
928	. "#line 1 \"$path\"\n{\n"
929	. (do { local $/; <$fh> })
930	. "\n};\n1";
931
932	unless (eval $source) {
933	my $msg = $@ ? "$path: $@\n"
934	: "extension disabled.\n";
935	if ($source =~ /^#!.perl.#.*MANDATORY/m) { # ugly match
936	warn $@;
937	warn "mandatory extension failed to load, exiting.\n";
938	exit 1;
939	}
940	die $@;
941	}
942
943	push @EXTS, $pkg;
944	}
945
946	sub load_extensions {	1107	sub load_extensions {
		1108	cf::sync_job {
		1109	my %todo;
		1110
947	for my $ext (<$LIBDIR/*.ext>) {	1111	for my $path (<$LIBDIR/*.ext>) {
948	next unless -r $ext;	1112	next unless -r $path;
949	eval {	1113
950	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;
951	1	1171	}
952	} or warn "$ext not loaded: $@";	1172
		1173	skip:
		1174	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1175	unless $progress;
		1176	}
953	}	1177	};
954	}	1178	}
955		1179
956	#############################################################################	1180	#############################################################################
		1181
		1182	=back
957		1183
958	=head2 CORE EXTENSIONS	1184	=head2 CORE EXTENSIONS
959		1185
960	Functions and methods that extend core crossfire objects.	1186	Functions and methods that extend core crossfire objects.
961		1187
…		…
1149	}	1375	}
1150		1376
1151	\@paths	1377	\@paths
1152	}	1378	}
1153		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
1154	=item $player->ext_reply ($msgid, %msg)	1413	=item $player->ext_reply ($msgid, %msg)
1155		1414
1156	Sends an ext reply to the player.	1415	Sends an ext reply to the player.
1157		1416
1158	=cut	1417	=cut
1159		1418
1160	sub ext_reply($$%) {	1419	sub ext_reply($$%) {
1161	my ($self, $id, %msg) = @_;	1420	my ($self, $id, %msg) = @_;
1162		1421
1163	$msg{msgid} = $id;	1422	$msg{msgid} = $id;
1164
1165	$self->send ("ext " . cf::to_json \%msg);	1423	$self->send ("ext " . cf::to_json \%msg);
1166	}	1424	}
1167		1425
1168	=item $player->ext_event ($type, %msg)	1426	=item $player->ext_event ($type, %msg)
1169		1427
…		…
1185		1443
1186	package cf::region;	1444	package cf::region;
1187		1445
1188	=item cf::region::find_by_path $path	1446	=item cf::region::find_by_path $path
1189		1447
1190	Tries to decuce the probable region for a map knowing only its path.	1448	Tries to decuce the likely region for a map knowing only its path.
1191		1449
1192	=cut	1450	=cut
1193		1451
1194	sub find_by_path($) {	1452	sub find_by_path($) {
1195	my ($path) = @_;	1453	my ($path) = @_;
…		…
1269	my ($self, $merge) = @_;	1527	my ($self, $merge) = @_;
1270		1528
1271	# we have to keep some variables in memory intact	1529	# we have to keep some variables in memory intact
1272	local $self->{path};	1530	local $self->{path};
1273	local $self->{load_path};	1531	local $self->{load_path};
1274	local $self->{deny_save};
1275	local $self->{deny_reset};
1276		1532
1277	$self->SUPER::thawer_merge ($merge);	1533	$self->SUPER::thawer_merge ($merge);
1278	}	1534	}
1279		1535
1280	sub normalise {	1536	sub normalise {
…		…
1380		1636
1381	$_->change_map_light ($change)	1637	$_->change_map_light ($change)
1382	for grep $_->outdoor, values %cf::MAP;	1638	for grep $_->outdoor, values %cf::MAP;
1383	}	1639	}
1384		1640
		1641	sub decay_objects {
		1642	my ($self) = @_;
		1643
		1644	return if $self->{deny_reset};
		1645
		1646	$self->do_decay_objects;
		1647	}
		1648
1385	sub unlink_save {	1649	sub unlink_save {
1386	my ($self) = @_;	1650	my ($self) = @_;
1387		1651
1388	utf8::encode (my $save = $self->save_path);	1652	utf8::encode (my $save = $self->save_path);
1389	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;	1653	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
…		…
1445	$self->load_header_orig	1709	$self->load_header_orig
1446	or return;	1710	or return;
1447	$self->prepare_orig;	1711	$self->prepare_orig;
1448	}	1712	}
1449		1713
		1714	$self->{deny_reset} = 1
		1715	if $self->no_reset;
		1716
1450	$self->default_region (cf::region::find_by_path $self->{path})	1717	$self->default_region (cf::region::find_by_path $self->{path})
1451	unless $self->default_region;	1718	unless $self->default_region;
1452		1719
1453	1	1720	1
1454	}	1721	}
…		…
1469	$map->{last_save} = $cf::RUNTIME;	1736	$map->{last_save} = $cf::RUNTIME;
1470		1737
1471	$map->load_header	1738	$map->load_header
1472	or return;	1739	or return;
1473		1740
1474	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	1741	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1475	# doing this can freeze the server in a sync job, obviously	1742	# doing this can freeze the server in a sync job, obviously
1476	#$cf::WAIT_FOR_TICK->wait;	1743	#$cf::WAIT_FOR_TICK->wait;
1477	$map->reset;	1744	$map->reset;
1478	undef $guard;	1745	undef $guard;
1479	return find $path;	1746	return find $path;
…		…
1535	Coro::cede;	1802	Coro::cede;
1536	$self->activate;	1803	$self->activate;
1537	}	1804	}
1538		1805
1539	$self->in_memory (cf::MAP_IN_MEMORY);	1806	$self->in_memory (cf::MAP_IN_MEMORY);
1540
1541	undef $guard;
1542	}	1807	}
1543		1808
1544	$self->post_load;	1809	$self->post_load;
1545	}	1810	}
1546		1811
1547	sub customise_for {	1812	sub customise_for {
1548	my ($self, $ob) = @_;	1813	my ($self, $ob) = @_;
1549		1814
1550	return find "~" . $ob->name . "/" . $self->{path}	1815	return find "~" . $ob->name . "/" . $self->{path}
1551	if $self->per_player;	1816	if $self->per_player;
		1817
		1818	# return find "?party/" . $ob->name . "/" . $self->{path}
		1819	# if $self->per_party;
1552		1820
1553	$self	1821	$self
1554	}	1822	}
1555		1823
1556	# find and load all maps in the 3x3 area around a map	1824	# find and load all maps in the 3x3 area around a map
…		…
1667		1935
1668	sub reset_at {	1936	sub reset_at {
1669	my ($self) = @_;	1937	my ($self) = @_;
1670		1938
1671	# TODO: safety, remove and allow resettable per-player maps	1939	# TODO: safety, remove and allow resettable per-player maps
1672	return 1e99 if $self->isa ("ext::map_per_player");#d#
1673	return 1e99 if $self->{deny_reset};	1940	return 1e99 if $self->{deny_reset};
1674		1941
1675	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	1942	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1676	my $to = List::Util::min $MAX_RESET, $self->reset_timeout \|\| $DEFAULT_RESET;	1943	my $to = List::Util::min $MAX_RESET, $self->reset_timeout \|\| $DEFAULT_RESET;
1677		1944
…		…
1688	my ($self) = @_;	1955	my ($self) = @_;
1689		1956
1690	my $lock = cf::lock_acquire "map_data:$self->{path}";	1957	my $lock = cf::lock_acquire "map_data:$self->{path}";
1691		1958
1692	return if $self->players;	1959	return if $self->players;
1693	return if $self->isa ("ext::map_per_player");#d#
1694		1960
1695	warn "resetting map ", $self->path;#d#	1961	warn "resetting map ", $self->path;
1696		1962
1697	$self->in_memory (cf::MAP_SWAPPED);	1963	$self->in_memory (cf::MAP_SWAPPED);
1698		1964
1699	# need to save uniques path	1965	# need to save uniques path
1700	unless ($self->{deny_save}) {	1966	unless ($self->{deny_save}) {
…		…
1732	$cf::MAP{$self->path} = $self;	1998	$cf::MAP{$self->path} = $self;
1733		1999
1734	$self->reset; # polite request, might not happen	2000	$self->reset; # polite request, might not happen
1735	}	2001	}
1736		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
1737	=item cf::map::unique_maps	2039	=item cf::map::unique_maps
1738		2040
1739	Returns an arrayref of paths of all shared maps that have	2041	Returns an arrayref of paths of all shared maps that have
1740	instantiated unique items. May block.	2042	instantiated unique items. May block.
1741		2043
1742	=cut	2044	=cut
1743		2045
1744	sub unique_maps() {	2046	sub unique_maps() {
1745	my $files = aio_readdir $UNIQUEDIR	2047	[
1746	or return;	2048	map {
1747
1748	my @paths;
1749
1750	for (@$files) {
1751	utf8::decode $_;	2049	utf8::decode $_;
1752	next if /\.pst$/;	2050	/\.map$/
1753	next unless /^$PATH_SEP/o;	2051	? normalise $_
1754		2052	: ()
1755	push @paths, cf::map::normalise $_;	2053	} @{ aio_readdir $UNIQUEDIR or [] }
1756	}	2054	]
1757
1758	\@paths
1759	}	2055	}
1760		2056
1761	package cf;	2057	package cf;
1762		2058
1763	=back	2059	=back
…		…
1809		2105
1810	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;	2106	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
1811		2107
1812	if ($self->{record_replies}) {	2108	if ($self->{record_replies}) {
1813	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2109	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2110
1814	} 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 {
1815	$msg = $npc->name . " says: $msg" if $npc;	2124	$msg = $npc->name . " says: $msg" if $npc;
1816	$self->message ($msg, $flags);	2125	$self->message ($msg, $flags);
		2126	}
1817	}	2127	}
1818	}	2128	}
1819		2129
1820	=item $player_object->may ("access")	2130	=item $player_object->may ("access")
1821		2131
…		…
1869	$self->deactivate_recursive;	2179	$self->deactivate_recursive;
1870		2180
1871	return if UNIVERSAL::isa $self->map, "ext::map_link";	2181	return if UNIVERSAL::isa $self->map, "ext::map_link";
1872		2182
1873	$self->{_link_pos} \|\|= [$self->map->{path}, $self->x, $self->y]	2183	$self->{_link_pos} \|\|= [$self->map->{path}, $self->x, $self->y]
1874	if $self->map;	2184	if $self->map && $self->map->{path} ne "{link}";
1875		2185
1876	$self->enter_map ($LINK_MAP \|\| link_map, 10, 10);	2186	$self->enter_map ($LINK_MAP \|\| link_map, 10, 10);
1877	}	2187	}
1878		2188
1879	sub cf::object::player::leave_link {	2189	sub cf::object::player::leave_link {
1880	my ($self, $map, $x, $y) = @_;	2190	my ($self, $map, $x, $y) = @_;
		2191
		2192	return unless $self->contr->active;
1881		2193
1882	my $link_pos = delete $self->{_link_pos};	2194	my $link_pos = delete $self->{_link_pos};
1883		2195
1884	unless ($map) {	2196	unless ($map) {
1885	# restore original map position	2197	# restore original map position
…		…
1908		2220
1909	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2221	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1910	$self->enter_map ($map, $x, $y);	2222	$self->enter_map ($map, $x, $y);
1911	}	2223	}
1912		2224
1913	cf::player->attach (
1914	on_logout => sub {
1915	my ($pl) = @_;
1916
1917	# abort map switching before logout
1918	if ($pl->ob->{_link_pos}) {
1919	cf::sync_job {
1920	$pl->ob->leave_link
1921	};
1922	}
1923	},
1924	on_login => sub {
1925	my ($pl) = @_;
1926
1927	# try to abort aborted map switching on player login :)
1928	# should happen only on crashes
1929	if ($pl->ob->{_link_pos}) {
1930	$pl->ob->enter_link;
1931	(async {
1932	$pl->ob->reply (undef,
1933	"There was an internal problem at your last logout, "
1934	. "the server will try to bring you to your intended destination in a second.",
1935	cf::NDI_RED);
1936	# we need this sleep as the login has a concurrent enter_exit running
1937	# and this sleep increases chances of the player not ending up in scorn
1938	Coro::Timer::sleep 1;
1939	$pl->ob->leave_link;
1940	})->prio (2);
1941	}
1942	},
1943	);
1944
1945	=item $player_object->goto ($path, $x, $y)	2225	=item $player_object->goto ($path, $x, $y[, $check->($map)])
1946		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
1947	=cut	2232	=cut
		2233
		2234	our $GOTOGEN;
1948		2235
1949	sub cf::object::player::goto {	2236	sub cf::object::player::goto {
1950	my ($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;
1951		2241
1952	$self->enter_link;	2242	$self->enter_link;
1953		2243
1954	(async {	2244	(async {
1955	my $map = eval {	2245	my $map = eval {
1956	my $map = cf::map::find $path;	2246	my $map = cf::map::find $path;
		2247
		2248	if ($map) {
1957	$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
1958	$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 $@;
1959	} or	2261	}
1960	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
1961		2262
		2263	if ($gen == $self->{_goto_generation}) {
		2264	delete $self->{_goto_generation};
1962	$self->leave_link ($map, $x, $y);	2265	$self->leave_link ($map, $x, $y);
		2266	}
1963	})->prio (1);	2267	})->prio (1);
1964	}	2268	}
1965		2269
1966	=item $player_object->enter_exit ($exit_object)	2270	=item $player_object->enter_exit ($exit_object)
1967		2271
…		…
2072		2376
2073	utf8::encode $text;	2377	utf8::encode $text;
2074	$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);
2075	}	2379	}
2076		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	$self->send_packet ("msg " . cf::to_json [$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
2077	=item $client->ext_event ($type, %msg)	2419	=item $client->ext_event ($type, %msg)
2078		2420
2079	Sends an exti event to the client.	2421	Sends an ext event to the client.
2080		2422
2081	=cut	2423	=cut
2082		2424
2083	sub cf::client::ext_event($$%) {	2425	sub cf::client::ext_event($$%) {
2084	my ($self, $type, %msg) = @_;	2426	my ($self, $type, %msg) = @_;
…		…
2091		2433
2092	Queues a query to the client, calling the given callback with	2434	Queues a query to the client, calling the given callback with
2093	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2435	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2094	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2436	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2095		2437
2096	Queries can fail, so check the return code. Or don't, as queries will become	2438	Queries can fail, so check the return code. Or don't, as queries will
2097	reliable at some point in the future.	2439	become reliable at some point in the future.
2098		2440
2099	=cut	2441	=cut
2100		2442
2101	sub cf::client::query {	2443	sub cf::client::query {
2102	my ($self, $flags, $text, $cb) = @_;	2444	my ($self, $flags, $text, $cb) = @_;
…		…
2110	utf8::encode $text;	2452	utf8::encode $text;
2111	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2453	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2112		2454
2113	$self->send_packet ($self->{query_queue}[0][0])	2455	$self->send_packet ($self->{query_queue}[0][0])
2114	if @{ $self->{query_queue} } == 1;	2456	if @{ $self->{query_queue} } == 1;
		2457
		2458	1
2115	}	2459	}
2116		2460
2117	cf::client->attach (	2461	cf::client->attach (
2118	on_reply => sub {	2462	on_reply => sub {
2119	my ($ns, $msg) = @_;	2463	my ($ns, $msg) = @_;
…		…
2133	$ns->send_packet ($ns->{query_queue}[0][0]);	2477	$ns->send_packet ($ns->{query_queue}[0][0]);
2134	} else {	2478	} else {
2135	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2479	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2136	}	2480	}
2137	}	2481	}
		2482	},
		2483	on_exticmd => sub {
		2484	my ($ns, $buf) = @_;
		2485
		2486	my $msg = eval { from_json $buf };
		2487
		2488	if (ref $msg) {
		2489	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2490	if (my %reply = $cb->($ns, $msg)) {
		2491	$reply{msgid} = $msg->{msgid};
		2492	$ns->send ("ext " . cf::to_json \%reply);
		2493	}
		2494	}
		2495	} else {
		2496	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2497	}
		2498
		2499	cf::override;
2138	},	2500	},
2139	);	2501	);
2140		2502
2141	=item $client->async (\&cb)	2503	=item $client->async (\&cb)
2142		2504
…		…
2281	=back	2643	=back
2282		2644
2283	=cut	2645	=cut
2284		2646
2285	#############################################################################	2647	#############################################################################
2286
2287	=head2 EXTENSION DATABASE SUPPORT
2288
2289	Crossfire maintains a very simple database for extension use. It can
2290	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2291	convert to/from binary).
2292
2293	The parameter C<$family> should best start with the name of the extension
2294	using it, it should be unique.
2295
2296	=over 4
2297
2298	=item $value = cf::db_get $family => $key
2299
2300	Returns a single value from the database.
2301
2302	=item cf::db_put $family => $key => $value
2303
2304	Stores the given C<$value> in the family.
2305
2306	=cut
2307
2308	our $DB;
2309
2310	sub db_init {
2311	unless ($DB) {
2312	$DB = BDB::db_create $DB_ENV;
2313
2314	cf::sync_job {
2315	eval {
2316	$DB->set_flags (BDB::CHKSUM);
2317
2318	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2319	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
2320	cf::cleanup "db_open(db): $!" if $!;
2321	};
2322	cf::cleanup "db_open(db): $@" if $@;
2323	};
2324	}
2325	}
2326
2327	sub db_get($$) {
2328	my $key = "$_[0]/$_[1]";
2329
2330	cf::sync_job {
2331	BDB::db_get $DB, undef, $key, my $data;
2332
2333	$! ? ()
2334	: $data
2335	}
2336	}
2337
2338	sub db_put($$$) {
2339	BDB::dbreq_pri 4;
2340	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2341	}
2342
2343	=item cf::cache $id => [$paths...], $processversion => $process
2344
2345	Generic caching function that returns the value of the resource $id,
2346	caching and regenerating as required.
2347
2348	This function can block.
2349
2350	=cut
2351
2352	sub cache {
2353	my ($id, $src, $processversion, $process) = @_;
2354
2355	my $meta =
2356	join "\x00",
2357	$processversion,
2358	map {
2359	aio_stat $_
2360	and Carp::croak "$_: $!";
2361
2362	($_, (stat _)[7,9])
2363	} @$src;
2364
2365	my $dbmeta = db_get cache => "$id/meta";
2366	if ($dbmeta ne $meta) {
2367	# changed, we may need to process
2368
2369	my @data;
2370	my $md5;
2371
2372	for (0 .. $#$src) {
2373	0 <= aio_load $src->[$_], $data[$_]
2374	or Carp::croak "$src->[$_]: $!";
2375	}
2376
2377	# if processing is expensive, check
2378	# checksum first
2379	if (1) {
2380	$md5 =
2381	join "\x00",
2382	$processversion,
2383	map {
2384	Coro::cede;
2385	($src->[$_], Digest::MD5::md5_hex $data[$_])
2386	} 0.. $#$src;
2387
2388
2389	my $dbmd5 = db_get cache => "$id/md5";
2390	if ($dbmd5 eq $md5) {
2391	db_put cache => "$id/meta", $meta;
2392
2393	return db_get cache => "$id/data";
2394	}
2395	}
2396
2397	my $t1 = Time::HiRes::time;
2398	my $data = $process->(\@data);
2399	my $t2 = Time::HiRes::time;
2400
2401	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2402
2403	db_put cache => "$id/data", $data;
2404	db_put cache => "$id/md5" , $md5;
2405	db_put cache => "$id/meta", $meta;
2406
2407	return $data;
2408	}
2409
2410	db_get cache => "$id/data"
2411	}
2412
2413	=item fork_call { }, $args
2414
2415	Executes the given code block with the given arguments in a seperate
2416	process, returning the results. Everything must be serialisable with
2417	Coro::Storable. May, of course, block. Note that the executed sub may
2418	never block itself or use any form of Event handling.
2419
2420	=cut
2421
2422	sub fork_call(&@) {
2423	my ($cb, @args) = @_;
2424
2425	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2426	# or die "socketpair: $!";
2427	pipe my $fh1, my $fh2
2428	or die "pipe: $!";
2429
2430	if (my $pid = fork) {
2431	close $fh2;
2432
2433	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2434	$res = Coro::Storable::thaw $res;
2435
2436	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2437
2438	die $$res unless "ARRAY" eq ref $res;
2439
2440	return wantarray ? @$res : $res->[-1];
2441	} else {
2442	local $SIG{__WARN__};
2443	eval {
2444	local $SIG{__DIE__};
2445	close $fh1;
2446
2447	my @res = eval { $cb->(@args) };
2448	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2449	};
2450
2451	warn $@ if $@;
2452	_exit 0;
2453	}
2454	}
2455
2456
2457
2458	#############################################################################
2459	# the server's init and main functions	2648	# the server's init and main functions
2460		2649
2461	sub load_facedata($) {	2650	sub load_facedata($) {
2462	my ($path) = @_;	2651	my ($path) = @_;
2463		2652
…		…
2533	sub reload_resources {	2722	sub reload_resources {
2534	warn "reloading resource files...\n";	2723	warn "reloading resource files...\n";
2535		2724
2536	reload_regions;	2725	reload_regions;
2537	reload_facedata;	2726	reload_facedata;
		2727	#reload_archetypes;#d#
2538	reload_archetypes;	2728	reload_archetypes;
2539	reload_treasures;	2729	reload_treasures;
2540		2730
2541	warn "finished reloading resource files\n";	2731	warn "finished reloading resource files\n";
2542	}	2732	}
…		…
2599	},	2789	},
2600	);	2790	);
2601	}	2791	}
2602	}	2792	}
2603		2793
		2794	sub write_runtime {
		2795	my $runtime = "$LOCALDIR/runtime";
		2796
		2797	# first touch the runtime file to show we are still running:
		2798	# the fsync below can take a very very long time.
		2799
		2800	IO::AIO::aio_utime $runtime, undef, undef;
		2801
		2802	my $guard = cf::lock_acquire "write_runtime";
		2803
		2804	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
		2805	or return;
		2806
		2807	my $value = $cf::RUNTIME + 90 + 10;
		2808	# 10 is the runtime save interval, for a monotonic clock
		2809	# 60 allows for the watchdog to kill the server.
		2810
		2811	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2812	and return;
		2813
		2814	# always fsync - this file is important
		2815	aio_fsync $fh
		2816	and return;
		2817
		2818	# touch it again to show we are up-to-date
		2819	aio_utime $fh, undef, undef;
		2820
		2821	close $fh
		2822	or return;
		2823
		2824	aio_rename "$runtime~", $runtime
		2825	and return;
		2826
		2827	warn "runtime file written.\n";
		2828
		2829	1
		2830	}
		2831
2604	sub emergency_save() {	2832	sub emergency_save() {
2605	my $freeze_guard = cf::freeze_mainloop;	2833	my $freeze_guard = cf::freeze_mainloop;
2606		2834
2607	warn "enter emergency perl save\n";	2835	warn "enter emergency perl save\n";
2608		2836
…		…
2683	%EXT_CORO = ();	2911	%EXT_CORO = ();
2684		2912
2685	warn "removing commands";	2913	warn "removing commands";
2686	%COMMAND = ();	2914	%COMMAND = ();
2687		2915
2688	warn "removing ext commands";	2916	warn "removing ext/exti commands";
2689	%EXTCMD = ();	2917	%EXTCMD = ();
		2918	%EXTICMD = ();
2690		2919
2691	warn "unloading/nuking all extensions";	2920	warn "unloading/nuking all extensions";
2692	for my $pkg (@EXTS) {	2921	for my $pkg (@EXTS) {
2693	warn "... unloading $pkg";	2922	warn "... unloading $pkg";
2694		2923
…		…
2812	my $signal = new Coro::Signal;	3041	my $signal = new Coro::Signal;
2813	push @WAIT_FOR_TICK_BEGIN, $signal;	3042	push @WAIT_FOR_TICK_BEGIN, $signal;
2814	$signal->wait;	3043	$signal->wait;
2815	}	3044	}
2816		3045
		3046	my $min = 1e6;#d#
		3047	my $avg = 10;
2817	$TICK_WATCHER = Event->timer (	3048	$TICK_WATCHER = Event->timer (
2818	reentrant => 0,	3049	reentrant => 0,
2819	parked => 1,	3050	parked => 1,
2820	prio => 0,	3051	prio => 0,
2821	at => $NEXT_TICK \|\| $TICK,	3052	at => $NEXT_TICK \|\| $TICK,
…		…
2825	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"	3056	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2826	unless ++$bug_warning > 10;	3057	unless ++$bug_warning > 10;
2827	return;	3058	return;
2828	}	3059	}
2829		3060
2830	$NOW = Event::time;	3061	$NOW = $tick_start = Event::time;
2831		3062
2832	cf::server_tick; # one server iteration	3063	cf::server_tick; # one server iteration
		3064
		3065	0 && sync_job {#d#
		3066	for(1..10) {
		3067	my $t = Event::time;
		3068	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3069	or die;
		3070
		3071	$map->width (50);
		3072	$map->height (50);
		3073	$map->alloc;
		3074	$map->_load_objects ("/tmp/x.map", 1);
		3075	my $t = Event::time - $t;
		3076
		3077	#next unless $t < 0.0013;#d#
		3078	if ($t < $min) {
		3079	$min = $t;
		3080	}
		3081	$avg = $avg * 0.99 + $t * 0.01;
		3082	}
		3083	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3084	exit 0;
		3085	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		3086	};
2833		3087
2834	$RUNTIME += $TICK;	3088	$RUNTIME += $TICK;
2835	$NEXT_TICK += $TICK;	3089	$NEXT_TICK += $TICK;
2836		3090
2837	if ($NOW >= $NEXT_RUNTIME_WRITE) {	3091	if ($NOW >= $NEXT_RUNTIME_WRITE) {
…		…
2843	}	3097	}
2844		3098
2845	# my $AFTER = Event::time;	3099	# my $AFTER = Event::time;
2846	# warn $AFTER - $NOW;#d#	3100	# warn $AFTER - $NOW;#d#
2847		3101
		3102	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3103	$sig->send;
		3104	}
		3105	while (my $sig = shift @WAIT_FOR_TICK) {
		3106	$sig->send;
		3107	}
		3108
		3109	$NOW = Event::time;
		3110
2848	# if we are delayed by four ticks or more, skip them all	3111	# if we are delayed by four ticks or more, skip them all
2849	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	3112	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2850		3113
2851	$TICK_WATCHER->at ($NEXT_TICK);	3114	$TICK_WATCHER->at ($NEXT_TICK);
2852	$TICK_WATCHER->start;	3115	$TICK_WATCHER->start;
2853		3116
2854	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {	3117	$LOAD = ($NOW - $tick_start) / $TICK;
2855	$sig->send;	3118	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
2856	}
2857	while (my $sig = shift @WAIT_FOR_TICK) {
2858	$sig->send;
2859	}
2860		3119
2861	_post_tick;	3120	_post_tick;
		3121
		3122
2862	},	3123	},
2863	);	3124	);
2864		3125
2865	{	3126	{
2866	BDB::max_poll_time $TICK * 0.1;	3127	BDB::max_poll_time $TICK * 0.1;
…		…
2925	prio => 6,	3186	prio => 6,
2926	cb => \&IO::AIO::poll_cb,	3187	cb => \&IO::AIO::poll_cb,
2927	);	3188	);
2928	}	3189	}
2929		3190
		3191	my $_log_backtrace;
		3192
		3193	sub _log_backtrace {
		3194	my ($msg, @addr) = @_;
		3195
		3196	$msg =~ s/\n//;
		3197
		3198	# limit the # of concurrent backtraces
		3199	if ($_log_backtrace < 2) {
		3200	++$_log_backtrace;
		3201	async {
		3202	my @bt = fork_call {
		3203	@addr = map { sprintf "%x", $_ } @addr;
		3204	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3205	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 \|"
		3206	or die "addr2line: $!";
		3207
		3208	my @funcs;
		3209	my @res = <$fh>;
		3210	chomp for @res;
		3211	while (@res) {
		3212	my ($func, $line) = splice @res, 0, 2, ();
		3213	push @funcs, "[$func] $line";
		3214	}
		3215
		3216	@funcs
		3217	};
		3218
		3219	LOG llevInfo, "[ABT] $msg\n";
		3220	LOG llevInfo, "[ABT] $_\n" for @bt;
		3221	--$_log_backtrace;
		3222	};
		3223	} else {
		3224	LOG llevInfo, "[ABT] $msg\n";
		3225	LOG llevInfo, "[ABT] [suppressed]\n";
		3226	}
		3227	}
		3228
2930	# load additional modules	3229	# load additional modules
2931	use cf::pod;	3230	use cf::pod;
2932		3231
2933	END { cf::emergency_save }	3232	END { cf::emergency_save }
2934		3233

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Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.256 by root, Sat Apr 21 16:56:32 2007 UTC vs. Revision 1.288 by root, Mon Jun 25 07:40:53 2007 UTC

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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.256 by root, Sat Apr 21 16:56:32 2007 UTC vs.
Revision 1.288 by root, Mon Jun 25 07:40:53 2007 UTC