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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.255 by root, Thu Apr 19 16:23:47 2007 UTC vs.
Revision 1.304 by root, Wed Jul 11 16:55:18 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 ();
30	use IO::AIO 2.32 ();	31	use IO::AIO 2.32 ();
31	use Time::HiRes;	32	use Time::HiRes;
32	use Compress::LZF;	33	use Compress::LZF;
		34	use Digest::MD5 ();
33		35
34	# configure various modules to our taste	36	# configure various modules to our taste
35	#	37	#
36	$Storable::canonical = 1; # reduce rsync transfers	38	$Storable::canonical = 1; # reduce rsync transfers
37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator	39	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
…		…
49	our %COMMAND = ();	51	our %COMMAND = ();
50	our %COMMAND_TIME = ();	52	our %COMMAND_TIME = ();
51		53
52	our @EXTS = (); # list of extension package names	54	our @EXTS = (); # list of extension package names
53	our %EXTCMD = ();	55	our %EXTCMD = ();
		56	our %EXTICMD = ();
54	our %EXT_CORO = (); # coroutines bound to extensions	57	our %EXT_CORO = (); # coroutines bound to extensions
55	our %EXT_MAP = (); # pluggable maps	58	our %EXT_MAP = (); # pluggable maps
56		59
57	our $RELOAD; # number of reloads so far	60	our $RELOAD; # number of reloads so far
58	our @EVENT;	61	our @EVENT;
…		…
90	our $LINK_MAP; # the special {link} map, which is always available	93	our $LINK_MAP; # the special {link} map, which is always available
91		94
92	# used to convert map paths into valid unix filenames by replacing / by ∕	95	# used to convert map paths into valid unix filenames by replacing / by ∕
93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons	96	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
94		97
		98	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		99	our $LOADAVG; # same thing, but with alpha-smoothing
		100	our $tick_start; # for load detecting purposes
		101
95	binmode STDOUT;	102	binmode STDOUT;
96	binmode STDERR;	103	binmode STDERR;
97		104
98	# read virtual server time, if available	105	# read virtual server time, if available
99	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {	106	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
…		…
139		146
140	=item $cf::TICK	147	=item $cf::TICK
141		148
142	The interval between server ticks, in seconds.	149	The interval between server ticks, in seconds.
143		150
		151	=item $cf::LOADAVG
		152
		153	The current CPU load on the server (alpha-smoothed), as a value between 0
		154	(none) and 1 (overloaded), indicating how much time is spent on processing
		155	objects per tick. Healthy values are < 0.5.
		156
		157	=item $cf::LOAD
		158
		159	The raw value load value from the last tick.
		160
144	=item %cf::CFG	161	=item %cf::CFG
145		162
146	Configuration for the server, loaded from C</etc/crossfire/config>, or	163	Configuration for the server, loaded from C</etc/crossfire/config>, or
147	from wherever your confdir points to.	164	from wherever your confdir points to.
148		165
…		…
173	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	190	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
174	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	191	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
175	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	192	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
176	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	193	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
177	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	194	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		195	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
178	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	196	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
179		197
180	# we bless all objects into (empty) derived classes to force a method lookup	198	# we bless all objects into (empty) derived classes to force a method lookup
181	# within the Safe compartment.	199	# within the Safe compartment.
182	for my $pkg (qw(	200	for my $pkg (qw(
183	cf::global cf::attachable	201	cf::global cf::attachable
…		…
191	}	209	}
192		210
193	$Event::DIED = sub {	211	$Event::DIED = sub {
194	warn "error in event callback: @_";	212	warn "error in event callback: @_";
195	};	213	};
		214
		215	#############################################################################
196		216
197	=head2 UTILITY FUNCTIONS	217	=head2 UTILITY FUNCTIONS
198		218
199	=over 4	219	=over 4
200		220
…		…
219	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;	239	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
220	$d	240	$d
221	} || "[unable to dump $_[0]: '$@']";	241	} || "[unable to dump $_[0]: '$@']";
222	}	242	}
223		243
224	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
225
226	=item $ref = cf::from_json $json	244	=item $ref = cf::from_json $json
227		245
228	Converts a JSON string into the corresponding perl data structure.	246	Converts a JSON string into the corresponding perl data structure.
229		247
230	=item $json = cf::to_json $ref	248	=item $json = cf::to_json $ref
231		249
232	Converts a perl data structure into its JSON representation.	250	Converts a perl data structure into its JSON representation.
		251
		252	=cut
		253
		254	our $json_coder = JSON::XS->new->utf8->max_size (1e6); # accept ~1mb max
		255
		256	sub to_json ($) { $json_coder->encode ($_[0]) }
		257	sub from_json ($) { $json_coder->decode ($_[0]) }
233		258
234	=item cf::lock_wait $string	259	=item cf::lock_wait $string
235		260
236	Wait until the given lock is available. See cf::lock_acquire.	261	Wait until the given lock is available. See cf::lock_acquire.
237		262
…		…
303		328
304	BEGIN { *async = \&Coro::async_pool }	329	BEGIN { *async = \&Coro::async_pool }
305		330
306	=item cf::sync_job { BLOCK }	331	=item cf::sync_job { BLOCK }
307		332
308	The design of crossfire+ requires that the main coro ($Coro::main) is	333	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
309	always able to handle events or runnable, as crossfire+ is only partly	334	is always able to handle events or runnable, as Crossfire TRT is only
310	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	335	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		336	acceptable.
311		337
312	If it must be done, put the blocking parts into C<sync_job>. This will run	338	If it must be done, put the blocking parts into C<sync_job>. This will run
313	the given BLOCK in another coroutine while waiting for the result. The	339	the given BLOCK in another coroutine while waiting for the result. The
314	server will be frozen during this time, so the block should either finish	340	server will be frozen during this time, so the block should either finish
315	fast or be very important.	341	fast or be very important.
…		…
318		344
319	sub sync_job(&) {	345	sub sync_job(&) {
320	my ($job) = @_;	346	my ($job) = @_;
321		347
322	if ($Coro::current == $Coro::main) {	348	if ($Coro::current == $Coro::main) {
		349	my $time = Event::time;
		350
323	# this is the main coro, too bad, we have to block	351	# this is the main coro, too bad, we have to block
324	# till the operation succeeds, freezing the server :/	352	# till the operation succeeds, freezing the server :/
325		353
326	# TODO: use suspend/resume instead	354	# TODO: use suspend/resume instead
327	# (but this is cancel-safe)	355	# (but this is cancel-safe)
…		…
338		366
339	while ($busy) {	367	while ($busy) {
340	Coro::cede or Event::one_event;	368	Coro::cede or Event::one_event;
341	}	369	}
342		370
		371	$time = Event::time - $time;
		372
		373	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		374	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		375
		376	$tick_start += $time; # do not account sync jobs to server load
		377
343	wantarray ? @res : $res[0]	378	wantarray ? @res : $res[0]
344	} else {	379	} else {
345	# we are in another coroutine, how wonderful, everything just works	380	# we are in another coroutine, how wonderful, everything just works
346		381
347	$job->()	382	$job->()
…		…
366	$EXT_CORO{$coro+0} = $coro;	401	$EXT_CORO{$coro+0} = $coro;
367		402
368	$coro	403	$coro
369	}	404	}
370		405
371	sub write_runtime {	406	=item fork_call { }, $args
372	my $guard = cf::lock_acquire "write_runtime";
373		407
374	my $runtime = "$LOCALDIR/runtime";	408	Executes the given code block with the given arguments in a seperate
		409	process, returning the results. Everything must be serialisable with
		410	Coro::Storable. May, of course, block. Note that the executed sub may
		411	never block itself or use any form of Event handling.
375		412
376	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644	413	=cut
377	or return;
378		414
379	my $value = $cf::RUNTIME + 90 + 10;	415	sub _store_scalar {
380	# 10 is the runtime save interval, for a monotonic clock	416	open my $fh, ">", \my $buf
381	# 60 allows for the watchdog to kill the server.	417	or die "fork_call: cannot open fh-to-buf in child : $!";
382		418	Storable::store_fd $_[0], $fh;
383	(aio_write $fh, 0, (length $value), $value, 0) <= 0
384	and return;
385
386	# always fsync - this file is important
387	aio_fsync $fh
388	and return;
389
390	close $fh	419	close $fh;
391	or return;
392		420
393	aio_rename "$runtime~", $runtime	421	$buf
394	and return;	422	}
395		423
		424	sub fork_call(&@) {
		425	my ($cb, @args) = @_;
		426
		427	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		428	# or die "socketpair: $!";
		429	pipe my $fh1, my $fh2
		430	or die "pipe: $!";
		431
		432	if (my $pid = fork) {
		433	close $fh2;
		434
		435	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		436	warn "pst<$res>" unless $res =~ /^pst/;
		437	$res = Coro::Storable::thaw $res;
		438
		439	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		440
		441	Carp::confess $$res unless "ARRAY" eq ref $res;
		442
		443	return wantarray ? @$res : $res->[-1];
		444	} else {
		445	reset_signals;
		446	local $SIG{__WARN__};
		447	local $SIG{__DIE__};
		448	# just in case, this hack effectively disables event
		449	# in the child. cleaner and slower would be canceling all watchers,
		450	# but this works for the time being.
		451	local $Coro::idle;
		452	$Coro::current->prio (Coro::PRIO_MAX);
		453
		454	eval {
		455	close $fh1;
		456
		457	my @res = eval { $cb->(@args) };
		458
		459	syswrite $fh2, _store_scalar $@ ? \"$@" : \@res;
		460	close $fh2;
		461	};
		462
		463	warn $@ if $@;
		464	_exit 0;
396	1	465	}
		466	}
		467
		468	=item $value = cf::db_get $family => $key
		469
		470	Returns a single value from the environment database.
		471
		472	=item cf::db_put $family => $key => $value
		473
		474	Stores the given C<$value> in the family. It can currently store binary
		475	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		476
		477	=cut
		478
		479	our $DB;
		480
		481	sub db_init {
		482	unless ($DB) {
		483	$DB = BDB::db_create $DB_ENV;
		484
		485	cf::sync_job {
		486	eval {
		487	$DB->set_flags (BDB::CHKSUM);
		488
		489	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		490	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
		491	cf::cleanup "db_open(db): $!" if $!;
		492	};
		493	cf::cleanup "db_open(db): $@" if $@;
		494	};
		495	}
		496	}
		497
		498	sub db_get($$) {
		499	my $key = "$_[0]/$_[1]";
		500
		501	cf::sync_job {
		502	BDB::db_get $DB, undef, $key, my $data;
		503
		504	$! ? ()
		505	: $data
		506	}
		507	}
		508
		509	sub db_put($$$) {
		510	BDB::dbreq_pri 4;
		511	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		512	}
		513
		514	=item cf::cache $id => [$paths...], $processversion => $process
		515
		516	Generic caching function that returns the value of the resource $id,
		517	caching and regenerating as required.
		518
		519	This function can block.
		520
		521	=cut
		522
		523	sub cache {
		524	my ($id, $src, $processversion, $process) = @_;
		525
		526	my $meta =
		527	join "\x00",
		528	$processversion,
		529	map {
		530	aio_stat $_
		531	and Carp::croak "$_: $!";
		532
		533	($_, (stat _)[7,9])
		534	} @$src;
		535
		536	my $dbmeta = db_get cache => "$id/meta";
		537	if ($dbmeta ne $meta) {
		538	# changed, we may need to process
		539
		540	my @data;
		541	my $md5;
		542
		543	for (0 .. $#$src) {
		544	0 <= aio_load $src->[$_], $data[$_]
		545	or Carp::croak "$src->[$_]: $!";
		546	}
		547
		548	# if processing is expensive, check
		549	# checksum first
		550	if (1) {
		551	$md5 =
		552	join "\x00",
		553	$processversion,
		554	map {
		555	Coro::cede;
		556	($src->[$_], Digest::MD5::md5_hex $data[$_])
		557	} 0.. $#$src;
		558
		559
		560	my $dbmd5 = db_get cache => "$id/md5";
		561	if ($dbmd5 eq $md5) {
		562	db_put cache => "$id/meta", $meta;
		563
		564	return db_get cache => "$id/data";
		565	}
		566	}
		567
		568	my $t1 = Time::HiRes::time;
		569	my $data = $process->(\@data);
		570	my $t2 = Time::HiRes::time;
		571
		572	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		573
		574	db_put cache => "$id/data", $data;
		575	db_put cache => "$id/md5" , $md5;
		576	db_put cache => "$id/meta", $meta;
		577
		578	return $data;
		579	}
		580
		581	db_get cache => "$id/data"
397	}	582	}
398		583
399	=item cf::datalog type => key => value, ...	584	=item cf::datalog type => key => value, ...
400		585
401	Log a datalog packet of the given type with the given key-value pairs.	586	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")	604	attach callbacks/event handlers (a collection of which is called an "attachment")
420	to it. All such attachable objects support the following methods.	605	to it. All such attachable objects support the following methods.
421		606
422	In the following description, CLASS can be any of C<global>, C<object>	607	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	608	C<player>, C<client> or C<map> (i.e. the attachable objects in
424	crossfire+).	609	Crossfire TRT).
425		610
426	=over 4	611	=over 4
427		612
428	=item $attachable->attach ($attachment, key => $value...)	613	=item $attachable->attach ($attachment, key => $value...)
429		614
…		…
592	$registry = $CB_TYPE[$object_type] ||= [];	777	$registry = $CB_TYPE[$object_type] ||= [];
593		778
594	} elsif ($type eq "subtype") {	779	} elsif ($type eq "subtype") {
595	defined $object_type or Carp::croak "subtype specified without type";	780	defined $object_type or Carp::croak "subtype specified without type";
596	my $object_subtype = shift @arg;	781	my $object_subtype = shift @arg;
597	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	782	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
598		783
599	} elsif ($type eq "package") {	784	} elsif ($type eq "package") {
600	my $pkg = shift @arg;	785	my $pkg = shift @arg;
601		786
602	while (my ($name, $id) = each %cb_id) {	787	while (my ($name, $id) = each %cb_id) {
…		…
631	_attach $registry, $klass, @attach;	816	_attach $registry, $klass, @attach;
632	}	817	}
633		818
634	$obj->{$name} = \%arg;	819	$obj->{$name} = \%arg;
635	} else {	820	} else {
636	warn "object uses attachment '$name' that is not available, postponing.\n";	821	warn "object uses attachment '$name' which is not available, postponing.\n";
637	}	822	}
638		823
639	$obj->{_attachment}{$name} = undef;	824	$obj->{_attachment}{$name} = undef;
640	}	825	}
641		826
…		…
643	if (ref $_[0]) {	828	if (ref $_[0]) {
644	_object_attach @_;	829	_object_attach @_;
645	} else {	830	} else {
646	_attach shift->_attach_registry, @_;	831	_attach shift->_attach_registry, @_;
647	}	832	}
		833	_recalc_want;
648	};	834	};
649		835
650	# all those should be optimised	836	# all those should be optimised
651	sub cf::attachable::detach {	837	sub cf::attachable::detach {
652	my ($obj, $name) = @_;	838	my ($obj, $name) = @_;
…		…
655	delete $obj->{_attachment}{$name};	841	delete $obj->{_attachment}{$name};
656	reattach ($obj);	842	reattach ($obj);
657	} else {	843	} else {
658	Carp::croak "cannot, currently, detach class attachments";	844	Carp::croak "cannot, currently, detach class attachments";
659	}	845	}
		846	_recalc_want;
660	};	847	};
661		848
662	sub cf::attachable::attached {	849	sub cf::attachable::attached {
663	my ($obj, $name) = @_;	850	my ($obj, $name) = @_;
664		851
…		…
837	or return;	1024	or return;
838	$av = eval { (Storable::thaw $av)->{objs} };	1025	$av = eval { (Storable::thaw $av)->{objs} };
839	}	1026	}
840		1027
841	warn sprintf "loading %s (%d)\n",	1028	warn sprintf "loading %s (%d)\n",
842	$filename, length $data, scalar @{$av || []};#d#	1029	$filename, length $data, scalar @{$av || []};
843	return ($data, $av);	1030	return ($data, $av);
844	}	1031	}
		1032
		1033	=head2 COMMAND CALLBACKS
		1034
		1035	=over 4
		1036
		1037	=cut
845		1038
846	#############################################################################	1039	#############################################################################
847	# command handling &c	1040	# command handling &c
848		1041
849	=item cf::register_command $name => \&callback($ob,$args);	1042	=item cf::register_command $name => \&callback($ob,$args);
…		…
862	push @{ $COMMAND{$name} }, [$caller, $cb];	1055	push @{ $COMMAND{$name} }, [$caller, $cb];
863	}	1056	}
864		1057
865	=item cf::register_extcmd $name => \&callback($pl,$packet);	1058	=item cf::register_extcmd $name => \&callback($pl,$packet);
866		1059
867	Register a callbackf ro execution when the client sends an extcmd packet.	1060	Register a callback for execution when the client sends an (synchronous)
		1061	extcmd packet. Ext commands will be processed in the order they are
		1062	received by the server, like other user commands. The first argument is
		1063	the logged-in player. Ext commands can only be processed after a player
		1064	has logged in successfully.
868		1065
869	If the callback returns something, it is sent back as if reply was being	1066	If the callback returns something, it is sent back as if reply was being
870	called.	1067	called.
871		1068
		1069	=item cf::register_exticmd $name => \&callback($ns,$packet);
		1070
		1071	Register a callback for execution when the client sends an (asynchronous)
		1072	exticmd packet. Exti commands are processed by the server as soon as they
		1073	are received, i.e. out of order w.r.t. other commands. The first argument
		1074	is a client socket. Exti commands can be received anytime, even before
		1075	log-in.
		1076
		1077	If the callback returns something, it is sent back as if reply was being
		1078	called.
		1079
872	=cut	1080	=cut
873		1081
874	sub register_extcmd {	1082	sub register_extcmd {
875	my ($name, $cb) = @_;	1083	my ($name, $cb) = @_;
876		1084
877	$EXTCMD{$name} = $cb;	1085	$EXTCMD{$name} = $cb;
		1086	}
		1087
		1088	sub register_exticmd {
		1089	my ($name, $cb) = @_;
		1090
		1091	$EXTICMD{$name} = $cb;
878	}	1092	}
879		1093
880	cf::player->attach (	1094	cf::player->attach (
881	on_command => sub {	1095	on_command => sub {
882	my ($pl, $name, $params) = @_;	1096	my ($pl, $name, $params) = @_;
…		…
891	cf::override;	1105	cf::override;
892	},	1106	},
893	on_extcmd => sub {	1107	on_extcmd => sub {
894	my ($pl, $buf) = @_;	1108	my ($pl, $buf) = @_;
895		1109
896	my $msg = eval { from_json $buf };	1110	my $msg = eval { $pl->ns->{json_coder}->decode ($buf) };
897		1111
898	if (ref $msg) {	1112	if (ref $msg) {
899	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	1113	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
900	if (my %reply = $cb->($pl, $msg)) {	1114	if (my %reply = $cb->($pl, $msg)) {
901	$pl->ext_reply ($msg->{msgid}, %reply);	1115	$pl->ext_reply ($msg->{msgid}, %reply);
…		…
907		1121
908	cf::override;	1122	cf::override;
909	},	1123	},
910	);	1124	);
911		1125
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 {	1126	sub load_extensions {
		1127	cf::sync_job {
		1128	my %todo;
		1129
947	for my $ext (<$LIBDIR/*.ext>) {	1130	for my $path (<$LIBDIR/*.ext>) {
948	next unless -r $ext;	1131	next unless -r $path;
949	eval {	1132
950	load_extension $ext;	1133	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1134	my $base = $1;
		1135	my $pkg = $1;
		1136	$pkg =~ s/[^[:word:]]/_/g;
		1137	$pkg = "ext::$pkg";
		1138
		1139	open my $fh, "<:utf8", $path
		1140	or die "$path: $!";
		1141
		1142	my $source = do { local $/; <$fh> };
		1143
		1144	my %ext = (
		1145	path => $path,
		1146	base => $base,
		1147	pkg => $pkg,
		1148	);
		1149
		1150	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1151	if $source =~ /\A#!.*?perl.*?#\s*(.*)$/m;
		1152
		1153	$ext{source} =
		1154	"package $pkg; use strict; use utf8;\n"
		1155	. "#line 1 \"$path\"\n{\n"
		1156	. $source
		1157	. "\n};\n1";
		1158
		1159	$todo{$base} = \%ext;
		1160	}
		1161
		1162	my %done;
		1163	while (%todo) {
		1164	my $progress;
		1165
		1166	while (my ($k, $v) = each %todo) {
		1167	for (split /,\s*/, $v->{meta}{depends}) {
		1168	goto skip
		1169	unless exists $done{$_};
		1170	}
		1171
		1172	warn "... loading '$k' into '$v->{pkg}'\n";
		1173
		1174	unless (eval $v->{source}) {
		1175	my $msg = $@ ? "$v->{path}: $@\n"
		1176	: "$v->{base}: extension inactive.\n";
		1177
		1178	if (exists $v->{meta}{mandatory}) {
		1179	warn $msg;
		1180	warn "mandatory extension failed to load, exiting.\n";
		1181	exit 1;
		1182	}
		1183
		1184	warn $msg;
		1185	}
		1186
		1187	$done{$k} = delete $todo{$k};
		1188	push @EXTS, $v->{pkg};
		1189	$progress = 1;
951	1	1190	}
952	} or warn "$ext not loaded: $@";	1191
		1192	skip:
		1193	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1194	unless $progress;
		1195	}
953	}	1196	};
954	}	1197	}
955		1198
956	#############################################################################	1199	#############################################################################
		1200
		1201	=back
957		1202
958	=head2 CORE EXTENSIONS	1203	=head2 CORE EXTENSIONS
959		1204
960	Functions and methods that extend core crossfire objects.	1205	Functions and methods that extend core crossfire objects.
961		1206
…		…
1149	}	1394	}
1150		1395
1151	\@paths	1396	\@paths
1152	}	1397	}
1153		1398
		1399	=item $protocol_xml = $player->expand_cfpod ($crossfire_pod)
		1400
		1401	Expand crossfire pod fragments into protocol xml.
		1402
		1403	=cut
		1404
		1405	sub expand_cfpod {
		1406	((my $self), (local $_)) = @_;
		1407
		1408	# escape & and <
		1409	s/&/&amp;/g;
		1410	s/(?<![BIUGH])</&lt;/g;
		1411
		1412	# this is buggy, it needs to properly take care of nested <'s
		1413
		1414	1 while
		1415	# replace B<>, I<>, U<> etc.
		1416	s/B<([^\>]*)>/<b>$1<\/b>/
		1417	|| s/I<([^\>]*)>/<i>$1<\/i>/
		1418	|| s/U<([^\>]*)>/<u>$1<\/u>/
		1419	# replace G<male|female> tags
		1420	|| s{G<([^>|]*)\|([^>]*)>}{
		1421	$self->gender ? $2 : $1
		1422	}ge
		1423	# replace H<hint text>
		1424	|| s{H<([^\>]*)>}
		1425	{
		1426	("<fg name=\"lightblue\">[$1 (Use hintmode to suppress hints)]</fg>",
		1427	"<fg name=\"lightblue\">[Hint suppressed, see hintmode]</fg>",
		1428	"")
		1429	[$self->{hintmode}]
		1430	}ge;
		1431
		1432	# create single paragraphs (very hackish)
		1433	s/(?<=\S)\n(?=\w)/ /g;
		1434
		1435	# compress some whitespace
		1436	s/\s+\n/\n/g; # ws line-ends
		1437	s/\n\n+/\n/g; # double lines
		1438	s/^\n+//; # beginning lines
		1439	s/\n+$//; # ending lines
		1440
		1441	$_
		1442	}
		1443
		1444	sub hintmode {
		1445	$_[0]{hintmode} = $_[1] if @_ > 1;
		1446	$_[0]{hintmode}
		1447	}
		1448
1154	=item $player->ext_reply ($msgid, %msg)	1449	=item $player->ext_reply ($msgid, %msg)
1155		1450
1156	Sends an ext reply to the player.	1451	Sends an ext reply to the player.
1157		1452
1158	=cut	1453	=cut
1159		1454
1160	sub ext_reply($$%) {	1455	sub ext_reply($$%) {
1161	my ($self, $id, %msg) = @_;	1456	my ($self, $id, %msg) = @_;
1162		1457
1163	$msg{msgid} = $id;	1458	$msg{msgid} = $id;
1164		1459	$self->send ("ext " . $self->ns->{json_coder}->encode (\%msg));
1165	$self->send ("ext " . cf::to_json \%msg);
1166	}	1460	}
1167		1461
1168	=item $player->ext_event ($type, %msg)	1462	=item $player->ext_event ($type, %msg)
1169		1463
1170	Sends an ext event to the client.	1464	Sends an ext event to the client.
…		…
1185		1479
1186	package cf::region;	1480	package cf::region;
1187		1481
1188	=item cf::region::find_by_path $path	1482	=item cf::region::find_by_path $path
1189		1483
1190	Tries to decuce the probable region for a map knowing only its path.	1484	Tries to decuce the likely region for a map knowing only its path.
1191		1485
1192	=cut	1486	=cut
1193		1487
1194	sub find_by_path($) {	1488	sub find_by_path($) {
1195	my ($path) = @_;	1489	my ($path) = @_;
1196		1490
1197	my ($match, $specificity);	1491	my ($match, $specificity);
1198		1492
1199	for my $region (list) {	1493	for my $region (list) {
1200	if ($region->match && $path =~ $region->match) {	1494	if ($region->{match} && $path =~ $region->{match}) {
1201	($match, $specificity) = ($region, $region->specificity)	1495	($match, $specificity) = ($region, $region->specificity)
1202	if $region->specificity > $specificity;	1496	if $region->specificity > $specificity;
1203	}	1497	}
1204	}	1498	}
1205		1499
…		…
1269	my ($self, $merge) = @_;	1563	my ($self, $merge) = @_;
1270		1564
1271	# we have to keep some variables in memory intact	1565	# we have to keep some variables in memory intact
1272	local $self->{path};	1566	local $self->{path};
1273	local $self->{load_path};	1567	local $self->{load_path};
1274	local $self->{deny_save};
1275	local $self->{deny_reset};
1276		1568
1277	$self->SUPER::thawer_merge ($merge);	1569	$self->SUPER::thawer_merge ($merge);
1278	}	1570	}
1279		1571
1280	sub normalise {	1572	sub normalise {
…		…
1380		1672
1381	$_->change_map_light ($change)	1673	$_->change_map_light ($change)
1382	for grep $_->outdoor, values %cf::MAP;	1674	for grep $_->outdoor, values %cf::MAP;
1383	}	1675	}
1384		1676
		1677	sub decay_objects {
		1678	my ($self) = @_;
		1679
		1680	return if $self->{deny_reset};
		1681
		1682	$self->do_decay_objects;
		1683	}
		1684
1385	sub unlink_save {	1685	sub unlink_save {
1386	my ($self) = @_;	1686	my ($self) = @_;
1387		1687
1388	utf8::encode (my $save = $self->save_path);	1688	utf8::encode (my $save = $self->save_path);
1389	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;	1689	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
…		…
1445	$self->load_header_orig	1745	$self->load_header_orig
1446	or return;	1746	or return;
1447	$self->prepare_orig;	1747	$self->prepare_orig;
1448	}	1748	}
1449		1749
		1750	$self->{deny_reset} = 1
		1751	if $self->no_reset;
		1752
1450	$self->default_region (cf::region::find_by_path $self->{path})	1753	$self->default_region (cf::region::find_by_path $self->{path})
1451	unless $self->default_region;	1754	unless $self->default_region;
1452		1755
1453	1	1756	1
1454	}	1757	}
…		…
1469	$map->{last_save} = $cf::RUNTIME;	1772	$map->{last_save} = $cf::RUNTIME;
1470		1773
1471	$map->load_header	1774	$map->load_header
1472	or return;	1775	or return;
1473		1776
1474	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	1777	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1475	# doing this can freeze the server in a sync job, obviously	1778	# doing this can freeze the server in a sync job, obviously
1476	#$cf::WAIT_FOR_TICK->wait;	1779	#$cf::WAIT_FOR_TICK->wait;
1477	$map->reset;	1780	$map->reset;
1478	undef $guard;	1781	undef $guard;
1479	return find $path;	1782	return find $path;
…		…
1490	my ($self) = @_;	1793	my ($self) = @_;
1491		1794
1492	local $self->{deny_reset} = 1; # loading can take a long time	1795	local $self->{deny_reset} = 1; # loading can take a long time
1493		1796
1494	my $path = $self->{path};	1797	my $path = $self->{path};
		1798
		1799	{
1495	my $guard = cf::lock_acquire "map_load:$path";	1800	my $guard = cf::lock_acquire "map_load:$path";
1496		1801
1497	return if $self->in_memory != cf::MAP_SWAPPED;	1802	return if $self->in_memory != cf::MAP_SWAPPED;
1498		1803
1499	$self->in_memory (cf::MAP_LOADING);	1804	$self->in_memory (cf::MAP_LOADING);
1500		1805
1501	$self->alloc;	1806	$self->alloc;
1502		1807
1503	$self->pre_load;	1808	$self->pre_load;
1504	Coro::cede;
1505
1506	$self->_load_objects ($self->{load_path}, 1)
1507	or return;
1508
1509	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
1510	if delete $self->{load_original};
1511
1512	if (my $uniq = $self->uniq_path) {
1513	utf8::encode $uniq;
1514	if (aio_open $uniq, O_RDONLY, 0) {
1515	$self->clear_unique_items;
1516	$self->_load_objects ($uniq, 0);
1517	}
1518	}
1519
1520	Coro::cede;
1521	# now do the right thing for maps
1522	$self->link_multipart_objects;
1523	Coro::cede;
1524
1525	unless ($self->{deny_activate}) {
1526	$self->decay_objects;
1527	$self->fix_auto_apply;
1528	$self->update_buttons;
1529	Coro::cede;	1809	Coro::cede;
1530	$self->set_darkness_map;	1810
		1811	$self->_load_objects ($self->{load_path}, 1)
		1812	or return;
		1813
		1814	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1815	if delete $self->{load_original};
		1816
		1817	if (my $uniq = $self->uniq_path) {
		1818	utf8::encode $uniq;
		1819	if (aio_open $uniq, O_RDONLY, 0) {
		1820	$self->clear_unique_items;
		1821	$self->_load_objects ($uniq, 0);
		1822	}
		1823	}
		1824
		1825	Coro::cede;
		1826	# now do the right thing for maps
		1827	$self->link_multipart_objects;
1531	$self->difficulty ($self->estimate_difficulty)	1828	$self->difficulty ($self->estimate_difficulty)
1532	unless $self->difficulty;	1829	unless $self->difficulty;
1533	Coro::cede;	1830	Coro::cede;
		1831
		1832	unless ($self->{deny_activate}) {
		1833	$self->decay_objects;
		1834	$self->fix_auto_apply;
		1835	$self->update_buttons;
		1836	Coro::cede;
		1837	$self->set_darkness_map;
		1838	Coro::cede;
1534	$self->activate;	1839	$self->activate;
1535	Coro::cede;	1840	}
		1841
		1842	$self->in_memory (cf::MAP_IN_MEMORY);
1536	}	1843	}
1537		1844
1538	$self->post_load;	1845	$self->post_load;
1539	Coro::cede;
1540
1541	$self->in_memory (cf::MAP_IN_MEMORY);
1542	}	1846	}
1543		1847
1544	sub customise_for {	1848	sub customise_for {
1545	my ($self, $ob) = @_;	1849	my ($self, $ob) = @_;
1546		1850
1547	return find "~" . $ob->name . "/" . $self->{path}	1851	return find "~" . $ob->name . "/" . $self->{path}
1548	if $self->per_player;	1852	if $self->per_player;
		1853
		1854	# return find "?party/" . $ob->name . "/" . $self->{path}
		1855	# if $self->per_party;
1549		1856
1550	$self	1857	$self
1551	}	1858	}
1552		1859
1553	# find and load all maps in the 3x3 area around a map	1860	# find and load all maps in the 3x3 area around a map
…		…
1664		1971
1665	sub reset_at {	1972	sub reset_at {
1666	my ($self) = @_;	1973	my ($self) = @_;
1667		1974
1668	# TODO: safety, remove and allow resettable per-player maps	1975	# TODO: safety, remove and allow resettable per-player maps
1669	return 1e99 if $self->isa ("ext::map_per_player");#d#
1670	return 1e99 if $self->{deny_reset};	1976	return 1e99 if $self->{deny_reset};
1671		1977
1672	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	1978	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1673	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;	1979	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
1674		1980
…		…
1685	my ($self) = @_;	1991	my ($self) = @_;
1686		1992
1687	my $lock = cf::lock_acquire "map_data:$self->{path}";	1993	my $lock = cf::lock_acquire "map_data:$self->{path}";
1688		1994
1689	return if $self->players;	1995	return if $self->players;
1690	return if $self->isa ("ext::map_per_player");#d#
1691		1996
1692	warn "resetting map ", $self->path;#d#	1997	warn "resetting map ", $self->path;
1693		1998
1694	$self->in_memory (cf::MAP_SWAPPED);	1999	$self->in_memory (cf::MAP_SWAPPED);
1695		2000
1696	# need to save uniques path	2001	# need to save uniques path
1697	unless ($self->{deny_save}) {	2002	unless ($self->{deny_save}) {
…		…
1729	$cf::MAP{$self->path} = $self;	2034	$cf::MAP{$self->path} = $self;
1730		2035
1731	$self->reset; # polite request, might not happen	2036	$self->reset; # polite request, might not happen
1732	}	2037	}
1733		2038
		2039	=item $maps = cf::map::tmp_maps
		2040
		2041	Returns an arrayref with all map paths of currently instantiated and saved
		2042	maps. May block.
		2043
		2044	=cut
		2045
		2046	sub tmp_maps() {
		2047	[
		2048	map {
		2049	utf8::decode $_;
		2050	/\.map$/
		2051	? normalise $_
		2052	: ()
		2053	} @{ aio_readdir $TMPDIR or [] }
		2054	]
		2055	}
		2056
		2057	=item $maps = cf::map::random_maps
		2058
		2059	Returns an arrayref with all map paths of currently instantiated and saved
		2060	random maps. May block.
		2061
		2062	=cut
		2063
		2064	sub random_maps() {
		2065	[
		2066	map {
		2067	utf8::decode $_;
		2068	/\.map$/
		2069	? normalise "?random/$_"
		2070	: ()
		2071	} @{ aio_readdir $RANDOMDIR or [] }
		2072	]
		2073	}
		2074
1734	=item cf::map::unique_maps	2075	=item cf::map::unique_maps
1735		2076
1736	Returns an arrayref of paths of all shared maps that have	2077	Returns an arrayref of paths of all shared maps that have
1737	instantiated unique items. May block.	2078	instantiated unique items. May block.
1738		2079
1739	=cut	2080	=cut
1740		2081
1741	sub unique_maps() {	2082	sub unique_maps() {
1742	my $files = aio_readdir $UNIQUEDIR	2083	[
1743	or return;	2084	map {
1744
1745	my @paths;
1746
1747	for (@$files) {
1748	utf8::decode $_;	2085	utf8::decode $_;
1749	next if /\.pst$/;	2086	/\.map$/
1750	next unless /^$PATH_SEP/o;	2087	? normalise $_
1751		2088	: ()
1752	push @paths, cf::map::normalise $_;	2089	} @{ aio_readdir $UNIQUEDIR or [] }
1753	}	2090	]
1754
1755	\@paths
1756	}	2091	}
1757		2092
1758	package cf;	2093	package cf;
1759		2094
1760	=back	2095	=back
…		…
1806		2141
1807	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;	2142	$flags = cf::NDI_BROWN | cf::NDI_UNIQUE unless @_ >= 4;
1808		2143
1809	if ($self->{record_replies}) {	2144	if ($self->{record_replies}) {
1810	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2145	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2146
1811	} else {	2147	} else {
		2148	my $pl = $self->contr;
		2149
		2150	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2151	my $diag = $pl->{npc_dialog};
		2152	$diag->{pl}->ext_reply (
		2153	$diag->{id},
		2154	msgtype => "reply",
		2155	msg => $diag->{pl}->expand_cfpod ($msg),
		2156	add_topics => []
		2157	);
		2158
		2159	} else {
1812	$msg = $npc->name . " says: $msg" if $npc;	2160	$msg = $npc->name . " says: $msg" if $npc;
1813	$self->message ($msg, $flags);	2161	$self->message ($msg, $flags);
		2162	}
1814	}	2163	}
1815	}	2164	}
1816		2165
1817	=item $player_object->may ("access")	2166	=item $player_object->may ("access")
1818		2167
…		…
1866	$self->deactivate_recursive;	2215	$self->deactivate_recursive;
1867		2216
1868	return if UNIVERSAL::isa $self->map, "ext::map_link";	2217	return if UNIVERSAL::isa $self->map, "ext::map_link";
1869		2218
1870	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]	2219	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
1871	if $self->map;	2220	if $self->map && $self->map->{path} ne "{link}";
1872		2221
1873	$self->enter_map ($LINK_MAP || link_map, 10, 10);	2222	$self->enter_map ($LINK_MAP || link_map, 10, 10);
1874	}	2223	}
1875		2224
1876	sub cf::object::player::leave_link {	2225	sub cf::object::player::leave_link {
1877	my ($self, $map, $x, $y) = @_;	2226	my ($self, $map, $x, $y) = @_;
		2227
		2228	return unless $self->contr->active;
1878		2229
1879	my $link_pos = delete $self->{_link_pos};	2230	my $link_pos = delete $self->{_link_pos};
1880		2231
1881	unless ($map) {	2232	unless ($map) {
1882	# restore original map position	2233	# restore original map position
…		…
1905		2256
1906	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2257	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1907	$self->enter_map ($map, $x, $y);	2258	$self->enter_map ($map, $x, $y);
1908	}	2259	}
1909		2260
1910	cf::player->attach (
1911	on_logout => sub {
1912	my ($pl) = @_;
1913
1914	# abort map switching before logout
1915	if ($pl->ob->{_link_pos}) {
1916	cf::sync_job {
1917	$pl->ob->leave_link
1918	};
1919	}
1920	},
1921	on_login => sub {
1922	my ($pl) = @_;
1923
1924	# try to abort aborted map switching on player login :)
1925	# should happen only on crashes
1926	if ($pl->ob->{_link_pos}) {
1927	$pl->ob->enter_link;
1928	(async {
1929	$pl->ob->reply (undef,
1930	"There was an internal problem at your last logout, "
1931	. "the server will try to bring you to your intended destination in a second.",
1932	cf::NDI_RED);
1933	# we need this sleep as the login has a concurrent enter_exit running
1934	# and this sleep increases chances of the player not ending up in scorn
1935	Coro::Timer::sleep 1;
1936	$pl->ob->leave_link;
1937	})->prio (2);
1938	}
1939	},
1940	);
1941
1942	=item $player_object->goto ($path, $x, $y)	2261	=item $player_object->goto ($path, $x, $y[, $check->($map)])
1943		2262
		2263	Moves the player to the given map-path and coordinates by first freezing
		2264	her, loading and preparing them map, calling the provided $check callback
		2265	that has to return the map if sucecssful, and then unfreezes the player on
		2266	the new (success) or old (failed) map position.
		2267
1944	=cut	2268	=cut
		2269
		2270	our $GOTOGEN;
1945		2271
1946	sub cf::object::player::goto {	2272	sub cf::object::player::goto {
1947	my ($self, $path, $x, $y) = @_;	2273	my ($self, $path, $x, $y, $check) = @_;
		2274
		2275	# do generation counting so two concurrent goto's will be executed in-order
		2276	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1948		2277
1949	$self->enter_link;	2278	$self->enter_link;
1950		2279
1951	(async {	2280	(async {
1952	my $map = eval {	2281	my $map = eval {
1953	my $map = cf::map::find $path;	2282	my $map = cf::map::find $path;
		2283
		2284	if ($map) {
1954	$map = $map->customise_for ($self) if $map;	2285	$map = $map->customise_for ($self);
		2286	$map = $check->($map) if $check && $map;
		2287	} else {
		2288	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2289	}
		2290
1955	$map	2291	$map
		2292	};
		2293
		2294	if ($@) {
		2295	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2296	LOG llevError | logBacktrace, Carp::longmess $@;
1956	} or	2297	}
1957	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
1958		2298
		2299	if ($gen == $self->{_goto_generation}) {
		2300	delete $self->{_goto_generation};
1959	$self->leave_link ($map, $x, $y);	2301	$self->leave_link ($map, $x, $y);
		2302	}
1960	})->prio (1);	2303	})->prio (1);
1961	}	2304	}
1962		2305
1963	=item $player_object->enter_exit ($exit_object)	2306	=item $player_object->enter_exit ($exit_object)
1964		2307
…		…
2033	my $hp = $exit->stats->hp;	2376	my $hp = $exit->stats->hp;
2034	my $sp = $exit->stats->sp;	2377	my $sp = $exit->stats->sp;
2035		2378
2036	$self->enter_link;	2379	$self->enter_link;
2037		2380
		2381	# if exit is damned, update players death & WoR home-position
		2382	$self->contr->savebed ($slaying, $hp, $sp)
		2383	if $exit->flag (FLAG_DAMNED);
		2384
2038	(async {	2385	(async {
2039	$self->deactivate_recursive; # just to be sure	2386	$self->deactivate_recursive; # just to be sure
2040	unless (eval {	2387	unless (eval {
2041	$self->goto ($slaying, $hp, $sp);	2388	$self->goto ($slaying, $hp, $sp);
2042		2389
…		…
2069		2416
2070	utf8::encode $text;	2417	utf8::encode $text;
2071	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);	2418	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
2072	}	2419	}
2073		2420
		2421	=item $client->send_msg ($color, $type, $msg, [extra...])
		2422
		2423	Send a drawinfo or msg packet to the client, formatting the msg for the
		2424	client if neccessary. C<$type> should be a string identifying the type of
		2425	the message, with C<log> being the default. If C<$color> is negative, suppress
		2426	the message unless the client supports the msg packet.
		2427
		2428	=cut
		2429
		2430	sub cf::client::send_msg {
		2431	my ($self, $color, $type, $msg, @extra) = @_;
		2432
		2433	$msg = $self->pl->expand_cfpod ($msg);
		2434
		2435	return unless @extra || length $msg;
		2436
		2437	if ($self->can_msg) {
		2438	$self->send_packet ("msg " . $self->{json_coder}->encode ([$color, $type, $msg, @extra]));
		2439	} else {
		2440	# replace some tags by gcfclient-compatible ones
		2441	for ($msg) {
		2442	1 while
		2443	s/<b>([^<]*)<\/b>/[b]${1}[\/b]/
		2444	|| s/<i>([^<]*)<\/i>/[i]${1}[\/i]/
		2445	|| s/<u>([^<]*)<\/u>/[ul]${1}[\/ul]/
		2446	|| s/<tt>([^<]*)<\/tt>/[fixed]${1}[\/fixed]/
		2447	|| s/<fg name=\"([^"]+)\">([^<]*)<\/fg>/[color=$1]${2}[\/color]/;
		2448	}
		2449
		2450	if ($color >= 0) {
		2451	if (0 && $msg =~ /\[/) {
		2452	$self->send_packet ("drawextinfo $color 4 0 $msg")
		2453	} else {
		2454	$msg =~ s/\[\/?(?:b|i|u|fixed|color)[^\]]*\]//g;
		2455	$self->send_packet ("drawinfo $color $msg")
		2456	}
		2457	}
		2458	}
		2459	}
		2460
2074	=item $client->ext_event ($type, %msg)	2461	=item $client->ext_event ($type, %msg)
2075		2462
2076	Sends an exti event to the client.	2463	Sends an ext event to the client.
2077		2464
2078	=cut	2465	=cut
2079		2466
2080	sub cf::client::ext_event($$%) {	2467	sub cf::client::ext_event($$%) {
2081	my ($self, $type, %msg) = @_;	2468	my ($self, $type, %msg) = @_;
2082		2469
2083	$msg{msgtype} = "event_$type";	2470	$msg{msgtype} = "event_$type";
2084	$self->send_packet ("ext " . cf::to_json \%msg);	2471	$self->send_packet ("ext " . $self->{json_coder}->encode (\%msg));
2085	}	2472	}
2086		2473
2087	=item $success = $client->query ($flags, "text", \&cb)	2474	=item $success = $client->query ($flags, "text", \&cb)
2088		2475
2089	Queues a query to the client, calling the given callback with	2476	Queues a query to the client, calling the given callback with
2090	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2477	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
2091	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.	2478	C<cf::CS_QUERY_SINGLECHAR> or C<cf::CS_QUERY_HIDEINPUT> or C<0>.
2092		2479
2093	Queries can fail, so check the return code. Or don't, as queries will become	2480	Queries can fail, so check the return code. Or don't, as queries will
2094	reliable at some point in the future.	2481	become reliable at some point in the future.
2095		2482
2096	=cut	2483	=cut
2097		2484
2098	sub cf::client::query {	2485	sub cf::client::query {
2099	my ($self, $flags, $text, $cb) = @_;	2486	my ($self, $flags, $text, $cb) = @_;
…		…
2107	utf8::encode $text;	2494	utf8::encode $text;
2108	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];	2495	push @{ $self->{query_queue} }, [(sprintf "query %d %s", $flags, $text), $cb];
2109		2496
2110	$self->send_packet ($self->{query_queue}[0][0])	2497	$self->send_packet ($self->{query_queue}[0][0])
2111	if @{ $self->{query_queue} } == 1;	2498	if @{ $self->{query_queue} } == 1;
		2499
		2500	1
2112	}	2501	}
2113		2502
2114	cf::client->attach (	2503	cf::client->attach (
		2504	on_connect => sub {
		2505	my ($ns) = @_;
		2506
		2507	$ns->{json_coder} = JSON::XS->new->utf8->max_size (1e6)->convert_blessed;
		2508	},
2115	on_reply => sub {	2509	on_reply => sub {
2116	my ($ns, $msg) = @_;	2510	my ($ns, $msg) = @_;
2117		2511
2118	# this weird shuffling is so that direct followup queries	2512	# this weird shuffling is so that direct followup queries
2119	# get handled first	2513	# get handled first
…		…
2131	} else {	2525	} else {
2132	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;	2526	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
2133	}	2527	}
2134	}	2528	}
2135	},	2529	},
		2530	on_exticmd => sub {
		2531	my ($ns, $buf) = @_;
		2532
		2533	my $msg = eval { $ns->{json_coder}->decode ($buf) };
		2534
		2535	if (ref $msg) {
		2536	if (my $cb = $EXTICMD{$msg->{msgtype}}) {
		2537	if (my %reply = $cb->($ns, $msg)) {
		2538	$reply{msgid} = $msg->{msgid};
		2539	$ns->send ("ext " . $ns->{json_coder}->encode (\%reply));
		2540	}
		2541	}
		2542	} else {
		2543	warn "client " . ($ns->pl ? $ns->pl->ob->name : $ns->host) . " sent unparseable exti message: <$buf>\n";
		2544	}
		2545
		2546	cf::override;
		2547	},
2136	);	2548	);
2137		2549
2138	=item $client->async (\&cb)	2550	=item $client->async (\&cb)
2139		2551
2140	Create a new coroutine, running the specified callback. The coroutine will	2552	Create a new coroutine, running the specified callback. The coroutine will
…		…
2189		2601
2190	=pod	2602	=pod
2191		2603
2192	The following functions and methods are available within a safe environment:	2604	The following functions and methods are available within a safe environment:
2193		2605
2194	cf::object contr pay_amount pay_player map	2606	cf::object
		2607	contr pay_amount pay_player map x y force_find force_add
		2608	insert remove
		2609
2195	cf::object::player player	2610	cf::object::player
2196	cf::player peaceful	2611	player
2197	cf::map trigger	2612
		2613	cf::player
		2614	peaceful
		2615
		2616	cf::map
		2617	trigger
2198		2618
2199	=cut	2619	=cut
2200		2620
2201	for (	2621	for (
2202	["cf::object" => qw(contr pay_amount pay_player map)],	2622	["cf::object" => qw(contr pay_amount pay_player map force_find force_add x y
		2623	insert remove)],
2203	["cf::object::player" => qw(player)],	2624	["cf::object::player" => qw(player)],
2204	["cf::player" => qw(peaceful)],	2625	["cf::player" => qw(peaceful)],
2205	["cf::map" => qw(trigger)],	2626	["cf::map" => qw(trigger)],
2206	) {	2627	) {
2207	no strict 'refs';	2628	no strict 'refs';
…		…
2278	=back	2699	=back
2279		2700
2280	=cut	2701	=cut
2281		2702
2282	#############################################################################	2703	#############################################################################
2283
2284	=head2 EXTENSION DATABASE SUPPORT
2285
2286	Crossfire maintains a very simple database for extension use. It can
2287	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2288	convert to/from binary).
2289
2290	The parameter C<$family> should best start with the name of the extension
2291	using it, it should be unique.
2292
2293	=over 4
2294
2295	=item $value = cf::db_get $family => $key
2296
2297	Returns a single value from the database.
2298
2299	=item cf::db_put $family => $key => $value
2300
2301	Stores the given C<$value> in the family.
2302
2303	=cut
2304
2305	our $DB;
2306
2307	sub db_init {
2308	unless ($DB) {
2309	$DB = BDB::db_create $DB_ENV;
2310
2311	cf::sync_job {
2312	eval {
2313	$DB->set_flags (BDB::CHKSUM);
2314
2315	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2316	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
2317	cf::cleanup "db_open(db): $!" if $!;
2318	};
2319	cf::cleanup "db_open(db): $@" if $@;
2320	};
2321	}
2322	}
2323
2324	sub db_get($$) {
2325	my $key = "$_[0]/$_[1]";
2326
2327	cf::sync_job {
2328	BDB::db_get $DB, undef, $key, my $data;
2329
2330	$! ? ()
2331	: $data
2332	}
2333	}
2334
2335	sub db_put($$$) {
2336	BDB::dbreq_pri 4;
2337	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2338	}
2339
2340	=item cf::cache $id => [$paths...], $processversion => $process
2341
2342	Generic caching function that returns the value of the resource $id,
2343	caching and regenerating as required.
2344
2345	This function can block.
2346
2347	=cut
2348
2349	sub cache {
2350	my ($id, $src, $processversion, $process) = @_;
2351
2352	my $meta =
2353	join "\x00",
2354	$processversion,
2355	map {
2356	aio_stat $_
2357	and Carp::croak "$_: $!";
2358
2359	($_, (stat _)[7,9])
2360	} @$src;
2361
2362	my $dbmeta = db_get cache => "$id/meta";
2363	if ($dbmeta ne $meta) {
2364	# changed, we may need to process
2365
2366	my @data;
2367	my $md5;
2368
2369	for (0 .. $#$src) {
2370	0 <= aio_load $src->[$_], $data[$_]
2371	or Carp::croak "$src->[$_]: $!";
2372	}
2373
2374	# if processing is expensive, check
2375	# checksum first
2376	if (1) {
2377	$md5 =
2378	join "\x00",
2379	$processversion,
2380	map {
2381	Coro::cede;
2382	($src->[$_], Digest::MD5::md5_hex $data[$_])
2383	} 0.. $#$src;
2384
2385
2386	my $dbmd5 = db_get cache => "$id/md5";
2387	if ($dbmd5 eq $md5) {
2388	db_put cache => "$id/meta", $meta;
2389
2390	return db_get cache => "$id/data";
2391	}
2392	}
2393
2394	my $t1 = Time::HiRes::time;
2395	my $data = $process->(\@data);
2396	my $t2 = Time::HiRes::time;
2397
2398	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2399
2400	db_put cache => "$id/data", $data;
2401	db_put cache => "$id/md5" , $md5;
2402	db_put cache => "$id/meta", $meta;
2403
2404	return $data;
2405	}
2406
2407	db_get cache => "$id/data"
2408	}
2409
2410	=item fork_call { }, $args
2411
2412	Executes the given code block with the given arguments in a seperate
2413	process, returning the results. Everything must be serialisable with
2414	Coro::Storable. May, of course, block. Note that the executed sub may
2415	never block itself or use any form of Event handling.
2416
2417	=cut
2418
2419	sub fork_call(&@) {
2420	my ($cb, @args) = @_;
2421
2422	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2423	# or die "socketpair: $!";
2424	pipe my $fh1, my $fh2
2425	or die "pipe: $!";
2426
2427	if (my $pid = fork) {
2428	close $fh2;
2429
2430	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2431	$res = Coro::Storable::thaw $res;
2432
2433	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2434
2435	die $$res unless "ARRAY" eq ref $res;
2436
2437	return wantarray ? @$res : $res->[-1];
2438	} else {
2439	local $SIG{__WARN__};
2440	eval {
2441	local $SIG{__DIE__};
2442	close $fh1;
2443
2444	my @res = eval { $cb->(@args) };
2445	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2446	};
2447
2448	warn $@ if $@;
2449	_exit 0;
2450	}
2451	}
2452
2453
2454
2455	#############################################################################
2456	# the server's init and main functions	2704	# the server's init and main functions
2457		2705
2458	sub load_facedata($) {	2706	sub load_facedata($) {
2459	my ($path) = @_;	2707	my ($path) = @_;
2460		2708
…		…
2472	{	2720	{
2473	my $faces = $facedata->{faceinfo};	2721	my $faces = $facedata->{faceinfo};
2474		2722
2475	while (my ($face, $info) = each %$faces) {	2723	while (my ($face, $info) = each %$faces) {
2476	my $idx = (cf::face::find $face) || cf::face::alloc $face;	2724	my $idx = (cf::face::find $face) || cf::face::alloc $face;
2477	cf::face::set $idx, $info->{visibility}, $info->{magicmap};	2725	cf::face::set_visibility $idx, $info->{visibility};
		2726	cf::face::set_magicmap $idx, $info->{magicmap};
2478	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};	2727	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
2479	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};	2728	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
2480	Coro::cede;	2729
		2730	cf::cede_to_tick;
2481	}	2731	}
2482		2732
2483	while (my ($face, $info) = each %$faces) {	2733	while (my ($face, $info) = each %$faces) {
2484	next unless $info->{smooth};	2734	next unless $info->{smooth};
2485	my $idx = cf::face::find $face	2735	my $idx = cf::face::find $face
2486	or next;	2736	or next;
2487	if (my $smooth = cf::face::find $info->{smooth}) {	2737	if (my $smooth = cf::face::find $info->{smooth}) {
		2738	cf::face::set_smooth $idx, $smooth;
2488	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};	2739	cf::face::set_smoothlevel $idx, $info->{smoothlevel};
2489	} else {	2740	} else {
2490	warn "smooth face '$info->{smooth}' not found for face '$face'";	2741	warn "smooth face '$info->{smooth}' not found for face '$face'";
2491	}	2742	}
2492	Coro::cede;	2743
		2744	cf::cede_to_tick;
2493	}	2745	}
2494	}	2746	}
2495		2747
2496	{	2748	{
2497	my $anims = $facedata->{animinfo};	2749	my $anims = $facedata->{animinfo};
2498		2750
2499	while (my ($anim, $info) = each %$anims) {	2751	while (my ($anim, $info) = each %$anims) {
2500	cf::anim::set $anim, $info->{frames}, $info->{facings};	2752	cf::anim::set $anim, $info->{frames}, $info->{facings};
2501	Coro::cede;	2753	cf::cede_to_tick;
2502	}	2754	}
2503		2755
2504	cf::anim::invalidate_all; # d'oh	2756	cf::anim::invalidate_all; # d'oh
		2757	}
		2758
		2759	{
		2760	# TODO: for gcfclient pleasure, we should give resources
		2761	# that gcfclient doesn't grok a >10000 face index.
		2762	my $res = $facedata->{resource};
		2763	my $enc = JSON::XS->new->utf8->canonical;
		2764
		2765	while (my ($name, $info) = each %$res) {
		2766	my $meta = $enc->encode ({
		2767	name => $name,
		2768	type => $info->{type},
		2769	copyright => $info->{copyright}, #TODO#
		2770	});
		2771	my $data = pack "(w/a*)*", $meta, $info->{data};
		2772	my $chk = Digest::MD5::md5 "$info->{chksum},$meta"; # mangle data checksum and metadata
		2773
		2774	my $idx = (cf::face::find $name) || cf::face::alloc $name;
		2775	cf::face::set_type $idx, 1;
		2776	cf::face::set_data $idx, 0, $data, $chk;
		2777
		2778	cf::cede_to_tick;
		2779	}
2505	}	2780	}
2506		2781
2507	1	2782	1
2508	}	2783	}
2509		2784
2510	sub reload_regions {	2785	sub reload_regions {
2511	load_resource_file "$MAPDIR/regions"	2786	load_resource_file "$MAPDIR/regions"
2512	or die "unable to load regions file\n";	2787	or die "unable to load regions file\n";
		2788
		2789	for (cf::region::list) {
		2790	$_->{match} = qr/$_->{match}/
		2791	if exists $_->{match};
		2792	}
2513	}	2793	}
2514		2794
2515	sub reload_facedata {	2795	sub reload_facedata {
2516	load_facedata "$DATADIR/facedata"	2796	load_facedata "$DATADIR/facedata"
2517	or die "unable to load facedata\n";	2797	or die "unable to load facedata\n";
2518	}	2798	}
2519		2799
2520	sub reload_archetypes {	2800	sub reload_archetypes {
2521	load_resource_file "$DATADIR/archetypes"	2801	load_resource_file "$DATADIR/archetypes"
2522	or die "unable to load archetypes\n";	2802	or die "unable to load archetypes\n";
		2803	#d# NEED to laod twice to resolve forward references
		2804	# this really needs to be done in an extra post-pass
		2805	# (which needs to be synchronous, so solve it differently)
		2806	load_resource_file "$DATADIR/archetypes"
		2807	or die "unable to load archetypes\n";
2523	}	2808	}
2524		2809
2525	sub reload_treasures {	2810	sub reload_treasures {
2526	load_resource_file "$DATADIR/treasures"	2811	load_resource_file "$DATADIR/treasures"
2527	or die "unable to load treasurelists\n";	2812	or die "unable to load treasurelists\n";
…		…
2530	sub reload_resources {	2815	sub reload_resources {
2531	warn "reloading resource files...\n";	2816	warn "reloading resource files...\n";
2532		2817
2533	reload_regions;	2818	reload_regions;
2534	reload_facedata;	2819	reload_facedata;
		2820	#reload_archetypes;#d#
2535	reload_archetypes;	2821	reload_archetypes;
2536	reload_treasures;	2822	reload_treasures;
2537		2823
2538	warn "finished reloading resource files\n";	2824	warn "finished reloading resource files\n";
2539	}	2825	}
…		…
2596	},	2882	},
2597	);	2883	);
2598	}	2884	}
2599	}	2885	}
2600		2886
		2887	sub write_runtime {
		2888	my $runtime = "$LOCALDIR/runtime";
		2889
		2890	# first touch the runtime file to show we are still running:
		2891	# the fsync below can take a very very long time.
		2892
		2893	IO::AIO::aio_utime $runtime, undef, undef;
		2894
		2895	my $guard = cf::lock_acquire "write_runtime";
		2896
		2897	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		2898	or return;
		2899
		2900	my $value = $cf::RUNTIME + 90 + 10;
		2901	# 10 is the runtime save interval, for a monotonic clock
		2902	# 60 allows for the watchdog to kill the server.
		2903
		2904	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2905	and return;
		2906
		2907	# always fsync - this file is important
		2908	aio_fsync $fh
		2909	and return;
		2910
		2911	# touch it again to show we are up-to-date
		2912	aio_utime $fh, undef, undef;
		2913
		2914	close $fh
		2915	or return;
		2916
		2917	aio_rename "$runtime~", $runtime
		2918	and return;
		2919
		2920	warn "runtime file written.\n";
		2921
		2922	1
		2923	}
		2924
2601	sub emergency_save() {	2925	sub emergency_save() {
2602	my $freeze_guard = cf::freeze_mainloop;	2926	my $freeze_guard = cf::freeze_mainloop;
2603		2927
2604	warn "enter emergency perl save\n";	2928	warn "enter emergency perl save\n";
2605		2929
…		…
2680	%EXT_CORO = ();	3004	%EXT_CORO = ();
2681		3005
2682	warn "removing commands";	3006	warn "removing commands";
2683	%COMMAND = ();	3007	%COMMAND = ();
2684		3008
2685	warn "removing ext commands";	3009	warn "removing ext/exti commands";
2686	%EXTCMD = ();	3010	%EXTCMD = ();
		3011	%EXTICMD = ();
2687		3012
2688	warn "unloading/nuking all extensions";	3013	warn "unloading/nuking all extensions";
2689	for my $pkg (@EXTS) {	3014	for my $pkg (@EXTS) {
2690	warn "... unloading $pkg";	3015	warn "... unloading $pkg";
2691		3016
…		…
2809	my $signal = new Coro::Signal;	3134	my $signal = new Coro::Signal;
2810	push @WAIT_FOR_TICK_BEGIN, $signal;	3135	push @WAIT_FOR_TICK_BEGIN, $signal;
2811	$signal->wait;	3136	$signal->wait;
2812	}	3137	}
2813		3138
		3139	my $min = 1e6;#d#
		3140	my $avg = 10;
2814	$TICK_WATCHER = Event->timer (	3141	$TICK_WATCHER = Event->timer (
2815	reentrant => 0,	3142	reentrant => 0,
2816	parked => 1,	3143	parked => 1,
2817	prio => 0,	3144	prio => 0,
2818	at => $NEXT_TICK || $TICK,	3145	at => $NEXT_TICK || $TICK,
…		…
2822	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"	3149	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2823	unless ++$bug_warning > 10;	3150	unless ++$bug_warning > 10;
2824	return;	3151	return;
2825	}	3152	}
2826		3153
2827	$NOW = Event::time;	3154	$NOW = $tick_start = Event::time;
2828		3155
2829	cf::server_tick; # one server iteration	3156	cf::server_tick; # one server iteration
		3157
		3158	0 && sync_job {#d#
		3159	for(1..10) {
		3160	my $t = Event::time;
		3161	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		3162	or die;
		3163
		3164	$map->width (50);
		3165	$map->height (50);
		3166	$map->alloc;
		3167	$map->_load_objects ("/tmp/x.map", 1);
		3168	my $t = Event::time - $t;
		3169
		3170	#next unless $t < 0.0013;#d#
		3171	if ($t < $min) {
		3172	$min = $t;
		3173	}
		3174	$avg = $avg * 0.99 + $t * 0.01;
		3175	}
		3176	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		3177	exit 0;
		3178	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		3179	};
2830		3180
2831	$RUNTIME += $TICK;	3181	$RUNTIME += $TICK;
2832	$NEXT_TICK += $TICK;	3182	$NEXT_TICK += $TICK;
2833		3183
2834	if ($NOW >= $NEXT_RUNTIME_WRITE) {	3184	if ($NOW >= $NEXT_RUNTIME_WRITE) {
…		…
2840	}	3190	}
2841		3191
2842	# my $AFTER = Event::time;	3192	# my $AFTER = Event::time;
2843	# warn $AFTER - $NOW;#d#	3193	# warn $AFTER - $NOW;#d#
2844		3194
		3195	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		3196	$sig->send;
		3197	}
		3198	while (my $sig = shift @WAIT_FOR_TICK) {
		3199	$sig->send;
		3200	}
		3201
		3202	$NOW = Event::time;
		3203
2845	# if we are delayed by four ticks or more, skip them all	3204	# if we are delayed by four ticks or more, skip them all
2846	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	3205	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2847		3206
2848	$TICK_WATCHER->at ($NEXT_TICK);	3207	$TICK_WATCHER->at ($NEXT_TICK);
2849	$TICK_WATCHER->start;	3208	$TICK_WATCHER->start;
2850		3209
2851	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {	3210	$LOAD = ($NOW - $tick_start) / $TICK;
2852	$sig->send;	3211	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
2853	}
2854	while (my $sig = shift @WAIT_FOR_TICK) {
2855	$sig->send;
2856	}
2857		3212
2858	_post_tick;	3213	_post_tick;
		3214
		3215
2859	},	3216	},
2860	);	3217	);
2861		3218
2862	{	3219	{
2863	BDB::max_poll_time $TICK * 0.1;	3220	BDB::max_poll_time $TICK * 0.1;
…		…
2922	prio => 6,	3279	prio => 6,
2923	cb => \&IO::AIO::poll_cb,	3280	cb => \&IO::AIO::poll_cb,
2924	);	3281	);
2925	}	3282	}
2926		3283
		3284	my $_log_backtrace;
		3285
		3286	sub _log_backtrace {
		3287	my ($msg, @addr) = @_;
		3288
		3289	$msg =~ s/\n//;
		3290
		3291	# limit the # of concurrent backtraces
		3292	if ($_log_backtrace < 2) {
		3293	++$_log_backtrace;
		3294	async {
		3295	my @bt = fork_call {
		3296	@addr = map { sprintf "%x", $_ } @addr;
		3297	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3298	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3299	or die "addr2line: $!";
		3300
		3301	my @funcs;
		3302	my @res = <$fh>;
		3303	chomp for @res;
		3304	while (@res) {
		3305	my ($func, $line) = splice @res, 0, 2, ();
		3306	push @funcs, "[$func] $line";
		3307	}
		3308
		3309	@funcs
		3310	};
		3311
		3312	LOG llevInfo, "[ABT] $msg\n";
		3313	LOG llevInfo, "[ABT] $_\n" for @bt;
		3314	--$_log_backtrace;
		3315	};
		3316	} else {
		3317	LOG llevInfo, "[ABT] $msg\n";
		3318	LOG llevInfo, "[ABT] [suppressed]\n";
		3319	}
		3320	}
		3321
2927	# load additional modules	3322	# load additional modules
2928	use cf::pod;	3323	use cf::pod;
2929		3324
2930	END { cf::emergency_save }	3325	END { cf::emergency_save }
2931		3326

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