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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.102 by root, Wed Dec 27 15:20:54 2006 UTC vs.
Revision 1.268 by root, Tue May 22 10:50:00 2007 UTC

…		…
3	use utf8;	3	use utf8;
4	use strict;	4	use strict;
5		5
6	use Symbol;	6	use Symbol;
7	use List::Util;	7	use List::Util;
		8	use Socket;
8	use Storable;	9	use Storable;
		10	use Event;
9	use Opcode;	11	use Opcode;
10	use Safe;	12	use Safe;
11	use Safe::Hole;	13	use Safe::Hole;
12		14
13	use Coro;	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
14	use Coro::Event;	18	use Coro::Event;
15	use Coro::Timer;	19	use Coro::Timer;
16	use Coro::Signal;	20	use Coro::Signal;
17	use Coro::Semaphore;	21	use Coro::Semaphore;
		22	use Coro::AIO;
		23	use Coro::Storable;
18		24
19	use IO::AIO 2.3;	25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
		28	use Fcntl;
20	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
21	use Time::HiRes;	31	use Time::HiRes;
		32	use Compress::LZF;
22		33
		34	# configure various modules to our taste
		35	#
		36	$Storable::canonical = 1; # reduce rsync transfers
		37	Coro::State::cctx_stacksize 256000; # 1-2MB stack, for deep recursions in maze generator
		38	Compress::LZF::sfreeze_cr { }; # prime Compress::LZF so it does not use require later
		39
23	use Event; $Event::Eval = 1; # no idea why this is required, but it is	40	$Event::Eval = 1; # no idea why this is required, but it is
24		41
25	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?	42	# work around bug in YAML::Syck - bad news for perl6, will it be as broken wrt. unicode?
26	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
27		44
28	$Coro::main->prio (Coro::PRIO_MIN);	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
29		46
30	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
31		48
32	our %COMMAND = ();	49	our %COMMAND = ();
33	our %COMMAND_TIME = ();	50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
34	our %EXTCMD = ();	53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
35		56
		57	our $RELOAD; # number of reloads so far
36	our @EVENT;	58	our @EVENT;
37	our $LIBDIR = datadir . "/ext";
38		59
39	our $TICK = MAX_TIME * 1e-6;	60	our $CONFDIR = confdir;
		61	our $DATADIR = datadir;
		62	our $LIBDIR = "$DATADIR/ext";
		63	our $PODDIR = "$DATADIR/pod";
		64	our $MAPDIR = "$DATADIR/" . mapdir;
		65	our $LOCALDIR = localdir;
		66	our $TMPDIR = "$LOCALDIR/" . tmpdir;
		67	our $UNIQUEDIR = "$LOCALDIR/" . uniquedir;
		68	our $PLAYERDIR = "$LOCALDIR/" . playerdir;
		69	our $RANDOMDIR = "$LOCALDIR/random";
		70	our $BDBDIR = "$LOCALDIR/db";
		71
		72	our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
40	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
41	our $NEXT_TICK;	76	our $NEXT_TICK;
		77	our $NOW;
		78	our $USE_FSYNC = 1; # use fsync to write maps - default off
		79
		80	our $BDB_POLL_WATCHER;
		81	our $DB_ENV;
42		82
43	our %CFG;	83	our %CFG;
44		84
45	our $UPTIME; $UPTIME ||= time;	85	our $UPTIME; $UPTIME ||= time;
		86	our $RUNTIME;
		87
		88	our %PLAYER; # all users
		89	our %MAP; # all maps
		90	our $LINK_MAP; # the special {link} map, which is always available
		91
		92	# used to convert map paths into valid unix filenames by replacing / by ∕
		93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
		94
		95	our $LOAD; # a number between 0 (idle) and 1 (too many objects)
		96	our $LOADAVG; # same thing, but with alpha-smoothing
		97	our $tick_start; # for load detecting purposes
		98
		99	binmode STDOUT;
		100	binmode STDERR;
		101
		102	# read virtual server time, if available
		103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
		104	open my $fh, "<", "$LOCALDIR/runtime"
		105	or die "unable to read runtime file: $!";
		106	$RUNTIME = <$fh> + 0.;
		107	}
		108
		109	mkdir $_
		110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
		111
		112	our $EMERGENCY_POSITION;
		113
		114	sub cf::map::normalise;
46		115
47	#############################################################################	116	#############################################################################
48		117
49	=head2 GLOBAL VARIABLES	118	=head2 GLOBAL VARIABLES
50		119
…		…
52		121
53	=item $cf::UPTIME	122	=item $cf::UPTIME
54		123
55	The timestamp of the server start (so not actually an uptime).	124	The timestamp of the server start (so not actually an uptime).
56		125
57	=item $cf::LIBDIR	126	=item $cf::RUNTIME
58		127
59	The perl library directory, where extensions and cf-specific modules can	128	The time this server has run, starts at 0 and is increased by $cf::TICK on
60	be found. It will be added to C<@INC> automatically.	129	every server tick.
		130
		131	=item $cf::CONFDIR $cf::DATADIR $cf::LIBDIR $cf::PODDIR
		132	$cf::MAPDIR $cf::LOCALDIR $cf::TMPDIR $cf::UNIQUEDIR
		133	$cf::PLAYERDIR $cf::RANDOMDIR $cf::BDBDIR
		134
		135	Various directories - "/etc", read-only install directory, perl-library
		136	directory, pod-directory, read-only maps directory, "/var", "/var/tmp",
		137	unique-items directory, player file directory, random maps directory and
		138	database environment.
		139
		140	=item $cf::NOW
		141
		142	The time of the last (current) server tick.
61		143
62	=item $cf::TICK	144	=item $cf::TICK
63		145
64	The interval between server ticks, in seconds.	146	The interval between server ticks, in seconds.
		147
		148	=item $cf::LOADAVG
		149
		150	The current CPU load on the server (alpha-smoothed), as a value between 0
		151	(none) and 1 (overloaded), indicating how much time is spent on processing
		152	objects per tick. Healthy values are < 0.5.
		153
		154	=item $cf::LOAD
		155
		156	The raw value load value from the last tick.
65		157
66	=item %cf::CFG	158	=item %cf::CFG
67		159
68	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
69	from wherever your confdir points to.	161	from wherever your confdir points to.
		162
		163	=item cf::wait_for_tick, cf::wait_for_tick_begin
		164
		165	These are functions that inhibit the current coroutine one tick. cf::wait_for_tick_begin only
		166	returns directly I<after> the tick processing (and consequently, can only wake one process
		167	per tick), while cf::wait_for_tick wakes up all waiters after tick processing.
70		168
71	=back	169	=back
72		170
73	=cut	171	=cut
74		172
75	BEGIN {	173	BEGIN {
76	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
77	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
78	$msg .= "\n"	177	$msg .= "\n"
79	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
80		179
81	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
82	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
83	};	184	};
84	}	185	}
85		186
86	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
87	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
105		206
106	$Event::DIED = sub {	207	$Event::DIED = sub {
107	warn "error in event callback: @_";	208	warn "error in event callback: @_";
108	};	209	};
109		210
110	my %ext_pkg;
111	my @exts;
112	my @hook;
113
114	=head2 UTILITY FUNCTIONS	211	=head2 UTILITY FUNCTIONS
115		212
116	=over 4	213	=over 4
117		214
118	=cut	215	=item dumpval $ref
119		216
		217	=cut
		218
		219	sub dumpval {
		220	eval {
		221	local $SIG{__DIE__};
		222	my $d;
		223	if (1) {
		224	$d = new Data::Dumper([$_[0]], ["*var"]);
		225	$d->Terse(1);
		226	$d->Indent(2);
		227	$d->Quotekeys(0);
		228	$d->Useqq(1);
		229	#$d->Bless(...);
		230	$d->Seen($_[1]) if @_ > 1;
		231	$d = $d->Dump();
		232	}
		233	$d =~ s/([\x00-\x07\x09\x0b\x0c\x0e-\x1f])/sprintf "\\x%02x", ord($1)/ge;
		234	$d
		235	} || "[unable to dump $_[0]: '$@']";
		236	}
		237
120	use JSON::Syck (); # TODO# replace by JSON::PC once working	238	use JSON::XS qw(to_json from_json); # TODO# replace by JSON::PC once working
121		239
122	=item $ref = cf::from_json $json	240	=item $ref = cf::from_json $json
123		241
124	Converts a JSON string into the corresponding perl data structure.	242	Converts a JSON string into the corresponding perl data structure.
125		243
126	=cut
127
128	sub from_json($) {
129	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
130	JSON::Syck::Load $_[0]
131	}
132
133	=item $json = cf::to_json $ref	244	=item $json = cf::to_json $ref
134		245
135	Converts a perl data structure into its JSON representation.	246	Converts a perl data structure into its JSON representation.
136		247
137	=cut	248	=item cf::lock_wait $string
138		249
139	sub to_json($) {	250	Wait until the given lock is available. See cf::lock_acquire.
140	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	251
141	JSON::Syck::Dump $_[0]	252	=item my $lock = cf::lock_acquire $string
		253
		254	Wait until the given lock is available and then acquires it and returns
		255	a Coro::guard object. If the guard object gets destroyed (goes out of scope,
		256	for example when the coroutine gets canceled), the lock is automatically
		257	returned.
		258
		259	Lock names should begin with a unique identifier (for example, cf::map::find
		260	uses map_find and cf::map::load uses map_load).
		261
		262	=item $locked = cf::lock_active $string
		263
		264	Return true if the lock is currently active, i.e. somebody has locked it.
		265
		266	=cut
		267
		268	our %LOCK;
		269
		270	sub lock_wait($) {
		271	my ($key) = @_;
		272
		273	# wait for lock, if any
		274	while ($LOCK{$key}) {
		275	push @{ $LOCK{$key} }, $Coro::current;
		276	Coro::schedule;
		277	}
		278	}
		279
		280	sub lock_acquire($) {
		281	my ($key) = @_;
		282
		283	# wait, to be sure we are not locked
		284	lock_wait $key;
		285
		286	$LOCK{$key} = [];
		287
		288	Coro::guard {
		289	# wake up all waiters, to be on the safe side
		290	$_->ready for @{ delete $LOCK{$key} };
		291	}
		292	}
		293
		294	sub lock_active($) {
		295	my ($key) = @_;
		296
		297	! ! $LOCK{$key}
		298	}
		299
		300	sub freeze_mainloop {
		301	return unless $TICK_WATCHER->is_active;
		302
		303	my $guard = Coro::guard {
		304	$TICK_WATCHER->start;
		305	};
		306	$TICK_WATCHER->stop;
		307	$guard
		308	}
		309
		310	=item cf::async { BLOCK }
		311
		312	Currently the same as Coro::async_pool, meaning you cannot use
		313	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		314	thing you are allowed to do is call C<prio> on it.
		315
		316	=cut
		317
		318	BEGIN { *async = \&Coro::async_pool }
		319
		320	=item cf::sync_job { BLOCK }
		321
		322	The design of crossfire+ requires that the main coro ($Coro::main) is
		323	always able to handle events or runnable, as crossfire+ is only partly
		324	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.
		325
		326	If it must be done, put the blocking parts into C<sync_job>. This will run
		327	the given BLOCK in another coroutine while waiting for the result. The
		328	server will be frozen during this time, so the block should either finish
		329	fast or be very important.
		330
		331	=cut
		332
		333	sub sync_job(&) {
		334	my ($job) = @_;
		335
		336	if ($Coro::current == $Coro::main) {
		337	my $time = Event::time;
		338
		339	# this is the main coro, too bad, we have to block
		340	# till the operation succeeds, freezing the server :/
		341
		342	# TODO: use suspend/resume instead
		343	# (but this is cancel-safe)
		344	my $freeze_guard = freeze_mainloop;
		345
		346	my $busy = 1;
		347	my @res;
		348
		349	(async {
		350	@res = eval { $job->() };
		351	warn $@ if $@;
		352	undef $busy;
		353	})->prio (Coro::PRIO_MAX);
		354
		355	while ($busy) {
		356	Coro::cede or Event::one_event;
		357	}
		358
		359	$time = Event::time - $time;
		360
		361	LOG llevError | logBacktrace, Carp::longmess "long sync job"
		362	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		363
		364	$tick_start += $time; # do not account sync jobs to server load
		365
		366	wantarray ? @res : $res[0]
		367	} else {
		368	# we are in another coroutine, how wonderful, everything just works
		369
		370	$job->()
		371	}
		372	}
		373
		374	=item $coro = cf::async_ext { BLOCK }
		375
		376	Like async, but this coro is automatically being canceled when the
		377	extension calling this is being unloaded.
		378
		379	=cut
		380
		381	sub async_ext(&) {
		382	my $cb = shift;
		383
		384	my $coro = &Coro::async ($cb);
		385
		386	$coro->on_destroy (sub {
		387	delete $EXT_CORO{$coro+0};
		388	});
		389	$EXT_CORO{$coro+0} = $coro;
		390
		391	$coro
		392	}
		393
		394	sub write_runtime {
		395	my $runtime = "$LOCALDIR/runtime";
		396
		397	# first touch the runtime file to show we are still running:
		398	# the fsync below can take a very very long time.
		399
		400	if (my $fh = aio_open $runtime, O_WRONLY, 0) {
		401	utime undef, undef, $fh;
		402	}
		403
		404	my $guard = cf::lock_acquire "write_runtime";
		405
		406	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		407	or return;
		408
		409	my $value = $cf::RUNTIME + 90 + 10;
		410	# 10 is the runtime save interval, for a monotonic clock
		411	# 60 allows for the watchdog to kill the server.
		412
		413	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		414	and return;
		415
		416	# always fsync - this file is important
		417	aio_fsync $fh
		418	and return;
		419
		420	# touch it again to show we are up-to-date
		421	utime undef, undef, $fh;
		422
		423	close $fh
		424	or return;
		425
		426	aio_rename "$runtime~", $runtime
		427	and return;
		428
		429	warn "runtime file written.\n";#d#
		430
		431	1
		432	}
		433
		434	=item cf::datalog type => key => value, ...
		435
		436	Log a datalog packet of the given type with the given key-value pairs.
		437
		438	=cut
		439
		440	sub datalog($@) {
		441	my ($type, %kv) = @_;
		442	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
142	}	443	}
143		444
144	=back	445	=back
145		446
146	=cut	447	=cut
…		…
277	our @CB_TYPE = (); # registry for type (cf-object class) based events	578	our @CB_TYPE = (); # registry for type (cf-object class) based events
278	our @CB_MAP = ();	579	our @CB_MAP = ();
279		580
280	my %attachment;	581	my %attachment;
281		582
		583	sub cf::attachable::thawer_merge {
		584	# simply override everything except _meta
		585	local $_[0]{_meta};
		586	%{$_[0]} = %{$_[1]};
		587	}
		588
282	sub _attach_cb($$$$) {	589	sub _attach_cb($$$$) {
283	my ($registry, $event, $prio, $cb) = @_;	590	my ($registry, $event, $prio, $cb) = @_;
284		591
285	use sort 'stable';	592	use sort 'stable';
286		593
…		…
320	$registry = $CB_TYPE[$object_type] ||= [];	627	$registry = $CB_TYPE[$object_type] ||= [];
321		628
322	} elsif ($type eq "subtype") {	629	} elsif ($type eq "subtype") {
323	defined $object_type or Carp::croak "subtype specified without type";	630	defined $object_type or Carp::croak "subtype specified without type";
324	my $object_subtype = shift @arg;	631	my $object_subtype = shift @arg;
325	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	632	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
326		633
327	} elsif ($type eq "package") {	634	} elsif ($type eq "package") {
328	my $pkg = shift @arg;	635	my $pkg = shift @arg;
329		636
330	while (my ($name, $id) = each %cb_id) {	637	while (my ($name, $id) = each %cb_id) {
…		…
371	if (ref $_[0]) {	678	if (ref $_[0]) {
372	_object_attach @_;	679	_object_attach @_;
373	} else {	680	} else {
374	_attach shift->_attach_registry, @_;	681	_attach shift->_attach_registry, @_;
375	}	682	}
		683	_recalc_want;
376	};	684	};
377		685
378	# all those should be optimised	686	# all those should be optimised
379	sub cf::attachable::detach {	687	sub cf::attachable::detach {
380	my ($obj, $name) = @_;	688	my ($obj, $name) = @_;
…		…
383	delete $obj->{_attachment}{$name};	691	delete $obj->{_attachment}{$name};
384	reattach ($obj);	692	reattach ($obj);
385	} else {	693	} else {
386	Carp::croak "cannot, currently, detach class attachments";	694	Carp::croak "cannot, currently, detach class attachments";
387	}	695	}
		696	_recalc_want;
388	};	697	};
389		698
390	sub cf::attachable::attached {	699	sub cf::attachable::attached {
391	my ($obj, $name) = @_;	700	my ($obj, $name) = @_;
392		701
…		…
457	# object support	766	# object support
458		767
459	sub reattach {	768	sub reattach {
460	# basically do the same as instantiate, without calling instantiate	769	# basically do the same as instantiate, without calling instantiate
461	my ($obj) = @_;	770	my ($obj) = @_;
		771
		772	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
462		773
463	my $registry = $obj->registry;	774	my $registry = $obj->registry;
464		775
465	@$registry = ();	776	@$registry = ();
466		777
…		…
505	);	816	);
506		817
507	sub object_freezer_save {	818	sub object_freezer_save {
508	my ($filename, $rdata, $objs) = @_;	819	my ($filename, $rdata, $objs) = @_;
509		820
		821	sync_job {
510	if (length $$rdata) {	822	if (length $$rdata) {
511	warn sprintf "saving %s (%d,%d)\n",	823	warn sprintf "saving %s (%d,%d)\n",
512	$filename, length $$rdata, scalar @$objs;	824	$filename, length $$rdata, scalar @$objs;
513		825
514	if (open my $fh, ">:raw", "$filename~") {	826	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
515	chmod SAVE_MODE, $fh;
516	syswrite $fh, $$rdata;
517	close $fh;
518
519	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
520	chmod SAVE_MODE, $fh;	827	chmod SAVE_MODE, $fh;
521	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };	828	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		829	aio_fsync $fh if $cf::USE_FSYNC;
522	close $fh;	830	close $fh;
		831
		832	if (@$objs) {
		833	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		834	chmod SAVE_MODE, $fh;
		835	my $data = Storable::nfreeze { version => 1, objs => $objs };
		836	aio_write $fh, 0, (length $data), $data, 0;
		837	aio_fsync $fh if $cf::USE_FSYNC;
		838	close $fh;
523	rename "$filename.pst~", "$filename.pst";	839	aio_rename "$filename.pst~", "$filename.pst";
		840	}
		841	} else {
		842	aio_unlink "$filename.pst";
		843	}
		844
		845	aio_rename "$filename~", $filename;
524	} else {	846	} else {
525	unlink "$filename.pst";	847	warn "FATAL: $filename~: $!\n";
526	}	848	}
527
528	rename "$filename~", $filename;
529	} else {	849	} else {
530	warn "FATAL: $filename~: $!\n";
531	}
532	} else {
533	unlink $filename;	850	aio_unlink $filename;
534	unlink "$filename.pst";	851	aio_unlink "$filename.pst";
		852	}
535	}	853	}
536	}	854	}
537		855
538	sub object_freezer_as_string {	856	sub object_freezer_as_string {
539	my ($rdata, $objs) = @_;	857	my ($rdata, $objs) = @_;
…		…
544	}	862	}
545		863
546	sub object_thawer_load {	864	sub object_thawer_load {
547	my ($filename) = @_;	865	my ($filename) = @_;
548		866
549	local $/;	867	my ($data, $av);
550		868
551	my $av;	869	(aio_load $filename, $data) >= 0
		870	or return;
552		871
553	#TODO: use sysread etc.	872	unless (aio_stat "$filename.pst") {
554	if (open my $data, "<:raw:perlio", $filename) {	873	(aio_load "$filename.pst", $av) >= 0
555	$data = <$data>;	874	or return;
556	if (open my $pst, "<:raw:perlio", "$filename.pst") {
557	$av = eval { (Storable::thaw <$pst>)->{objs} };	875	$av = eval { (Storable::thaw $av)->{objs} };
558	}	876	}
		877
		878	warn sprintf "loading %s (%d)\n",
		879	$filename, length $data, scalar @{$av || []};#d#
559	return ($data, $av);	880	return ($data, $av);
560	}
561
562	()
563	}	881	}
564		882
565	#############################################################################	883	#############################################################################
566	# command handling &c	884	# command handling &c
567		885
…		…
591	=cut	909	=cut
592		910
593	sub register_extcmd {	911	sub register_extcmd {
594	my ($name, $cb) = @_;	912	my ($name, $cb) = @_;
595		913
596	my $caller = caller;
597	#warn "registering extcmd '$name' to '$caller'";
598
599	$EXTCMD{$name} = [$cb, $caller];	914	$EXTCMD{$name} = $cb;
600	}	915	}
601		916
602	cf::player->attach (	917	cf::player->attach (
603	on_command => sub {	918	on_command => sub {
604	my ($pl, $name, $params) = @_;	919	my ($pl, $name, $params) = @_;
…		…
617		932
618	my $msg = eval { from_json $buf };	933	my $msg = eval { from_json $buf };
619		934
620	if (ref $msg) {	935	if (ref $msg) {
621	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	936	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
622	if (my %reply = $cb->[0]->($pl, $msg)) {	937	if (my %reply = $cb->($pl, $msg)) {
623	$pl->ext_reply ($msg->{msgid}, %reply);	938	$pl->ext_reply ($msg->{msgid}, %reply);
624	}	939	}
625	}	940	}
626	} else {	941	} else {
627	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	942	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
629		944
630	cf::override;	945	cf::override;
631	},	946	},
632	);	947	);
633		948
634	sub register {
635	my ($base, $pkg) = @_;
636
637	#TODO
638	}
639
640	sub load_extension {	949	sub load_extension {
641	my ($path) = @_;	950	my ($path) = @_;
642		951
643	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	952	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
644	my $base = $1;	953	my $base = $1;
645	my $pkg = $1;	954	my $pkg = $1;
646	$pkg =~ s/[^[:word:]]/_/g;	955	$pkg =~ s/[^[:word:]]/_/g;
647	$pkg = "ext::$pkg";	956	$pkg = "ext::$pkg";
648		957
649	warn "loading '$path' into '$pkg'\n";	958	warn "... loading '$path' into '$pkg'\n";
650		959
651	open my $fh, "<:utf8", $path	960	open my $fh, "<:utf8", $path
652	or die "$path: $!";	961	or die "$path: $!";
653		962
654	my $source =	963	my $source =
655	"package $pkg; use strict; use utf8;\n"	964	"package $pkg; use strict; use utf8;\n"
656	. "#line 1 \"$path\"\n{\n"	965	. "#line 1 \"$path\"\n{\n"
657	. (do { local $/; <$fh> })	966	. (do { local $/; <$fh> })
658	. "\n};\n1";	967	. "\n};\n1";
659		968
660	eval $source	969	unless (eval $source) {
661	or die $@ ? "$path: $@\n"	970	my $msg = $@ ? "$path: $@\n"
662	: "extension disabled.\n";	971	: "extension disabled.\n";
663		972	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
664	push @exts, $pkg;	973	warn $@;
665	$ext_pkg{$base} = $pkg;	974	warn "mandatory extension failed to load, exiting.\n";
666		975	exit 1;
667	# no strict 'refs';	976	}
668	# @{"$pkg\::ISA"} = ext::;	977	die $@;
669
670	register $base, $pkg;
671	}
672
673	sub unload_extension {
674	my ($pkg) = @_;
675
676	warn "removing extension $pkg\n";
677
678	# remove hooks
679	#TODO
680	# for my $idx (0 .. $#PLUGIN_EVENT) {
681	# delete $hook[$idx]{$pkg};
682	# }	978	}
683		979
684	# remove commands	980	push @EXTS, $pkg;
685	for my $name (keys %COMMAND) {
686	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
687
688	if (@cb) {
689	$COMMAND{$name} = \@cb;
690	} else {
691	delete $COMMAND{$name};
692	}
693	}
694
695	# remove extcmds
696	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
697	delete $EXTCMD{$name};
698	}
699
700	if (my $cb = $pkg->can ("unload")) {
701	eval {
702	$cb->($pkg);
703	1
704	} or warn "$pkg unloaded, but with errors: $@";
705	}
706
707	Symbol::delete_package $pkg;
708	}	981	}
709		982
710	sub load_extensions {	983	sub load_extensions {
711	for my $ext (<$LIBDIR/*.ext>) {	984	for my $ext (<$LIBDIR/*.ext>) {
712	next unless -r $ext;	985	next unless -r $ext;
…		…
716	} or warn "$ext not loaded: $@";	989	} or warn "$ext not loaded: $@";
717	}	990	}
718	}	991	}
719		992
720	#############################################################################	993	#############################################################################
721	# load/save/clean perl data associated with a map
722		994
723	*cf::mapsupport::on_clean = sub {	995	=head2 CORE EXTENSIONS
		996
		997	Functions and methods that extend core crossfire objects.
		998
		999	=cut
		1000
		1001	package cf::player;
		1002
		1003	use Coro::AIO;
		1004
		1005	=head3 cf::player
		1006
		1007	=over 4
		1008
		1009	=item cf::player::find $login
		1010
		1011	Returns the given player object, loading it if necessary (might block).
		1012
		1013	=cut
		1014
		1015	sub playerdir($) {
		1016	"$PLAYERDIR/"
		1017	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1018	}
		1019
		1020	sub path($) {
		1021	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1022
		1023	(playerdir $login) . "/playerdata"
		1024	}
		1025
		1026	sub find_active($) {
		1027	$cf::PLAYER{$_[0]}
		1028	and $cf::PLAYER{$_[0]}->active
		1029	and $cf::PLAYER{$_[0]}
		1030	}
		1031
		1032	sub exists($) {
		1033	my ($login) = @_;
		1034
		1035	$cf::PLAYER{$login}
		1036	or cf::sync_job { !aio_stat path $login }
		1037	}
		1038
		1039	sub find($) {
		1040	return $cf::PLAYER{$_[0]} || do {
		1041	my $login = $_[0];
		1042
		1043	my $guard = cf::lock_acquire "user_find:$login";
		1044
		1045	$cf::PLAYER{$_[0]} || do {
		1046	# rename old playerfiles to new ones
		1047	#TODO: remove when no longer required
		1048	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1049	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1050	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1051	aio_unlink +(playerdir $login) . "/$login.pl";
		1052
		1053	my $pl = load_pl path $login
		1054	or return;
		1055	$cf::PLAYER{$login} = $pl
		1056	}
		1057	}
		1058	}
		1059
		1060	sub save($) {
		1061	my ($pl) = @_;
		1062
		1063	return if $pl->{deny_save};
		1064
		1065	my $path = path $pl;
		1066	my $guard = cf::lock_acquire "user_save:$path";
		1067
		1068	return if $pl->{deny_save};
		1069
		1070	aio_mkdir playerdir $pl, 0770;
		1071	$pl->{last_save} = $cf::RUNTIME;
		1072
		1073	$pl->save_pl ($path);
		1074	Coro::cede;
		1075	}
		1076
		1077	sub new($) {
		1078	my ($login) = @_;
		1079
		1080	my $self = create;
		1081
		1082	$self->ob->name ($login);
		1083	$self->{deny_save} = 1;
		1084
		1085	$cf::PLAYER{$login} = $self;
		1086
		1087	$self
		1088	}
		1089
		1090	=item $pl->quit_character
		1091
		1092	Nukes the player without looking back. If logged in, the connection will
		1093	be destroyed. May block for a long time.
		1094
		1095	=cut
		1096
		1097	sub quit_character {
		1098	my ($pl) = @_;
		1099
		1100	my $name = $pl->ob->name;
		1101
		1102	$pl->{deny_save} = 1;
		1103	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1104
		1105	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1106	$pl->deactivate;
		1107	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1108	$pl->ns->destroy if $pl->ns;
		1109
		1110	my $path = playerdir $pl;
		1111	my $temp = "$path~$cf::RUNTIME~deleting~";
		1112	aio_rename $path, $temp;
		1113	delete $cf::PLAYER{$pl->ob->name};
		1114	$pl->destroy;
		1115
		1116	my $prefix = qr<^~\Q$name\E/>;
		1117
		1118	# nuke player maps
		1119	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1120
		1121	IO::AIO::aio_rmtree $temp;
		1122	}
		1123
		1124	=item $pl->kick
		1125
		1126	Kicks a player out of the game. This destroys the connection.
		1127
		1128	=cut
		1129
		1130	sub kick {
		1131	my ($pl, $kicker) = @_;
		1132
		1133	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1134	$pl->killer ("kicked");
		1135	$pl->ns->destroy;
		1136	}
		1137
		1138	=item cf::player::list_logins
		1139
		1140	Returns am arrayref of all valid playernames in the system, can take a
		1141	while and may block, so not sync_job-capable, ever.
		1142
		1143	=cut
		1144
		1145	sub list_logins {
		1146	my $dirs = aio_readdir $PLAYERDIR
		1147	or return [];
		1148
		1149	my @logins;
		1150
		1151	for my $login (@$dirs) {
		1152	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1153	aio_read $fh, 0, 512, my $buf, 0 or next;
		1154	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1155
		1156	utf8::decode $login;
		1157	push @logins, $login;
		1158	}
		1159
		1160	\@logins
		1161	}
		1162
		1163	=item $player->maps
		1164
		1165	Returns an arrayref of map paths that are private for this
		1166	player. May block.
		1167
		1168	=cut
		1169
		1170	sub maps($) {
		1171	my ($pl) = @_;
		1172
		1173	$pl = ref $pl ? $pl->ob->name : $pl;
		1174
		1175	my $files = aio_readdir playerdir $pl
		1176	or return;
		1177
		1178	my @paths;
		1179
		1180	for (@$files) {
		1181	utf8::decode $_;
		1182	next if /\.(?:pl|pst)$/;
		1183	next unless /^$PATH_SEP/o;
		1184
		1185	push @paths, cf::map::normalise "~$pl/$_";
		1186	}
		1187
		1188	\@paths
		1189	}
		1190
		1191	=item $player->ext_reply ($msgid, %msg)
		1192
		1193	Sends an ext reply to the player.
		1194
		1195	=cut
		1196
		1197	sub ext_reply($$%) {
		1198	my ($self, $id, %msg) = @_;
		1199
		1200	$msg{msgid} = $id;
		1201
		1202	$self->send ("ext " . cf::to_json \%msg);
		1203	}
		1204
		1205	=item $player->ext_event ($type, %msg)
		1206
		1207	Sends an ext event to the client.
		1208
		1209	=cut
		1210
		1211	sub ext_event($$%) {
		1212	my ($self, $type, %msg) = @_;
		1213
		1214	$self->ns->ext_event ($type, %msg);
		1215	}
		1216
		1217	=head3 cf::region
		1218
		1219	=over 4
		1220
		1221	=cut
		1222
		1223	package cf::region;
		1224
		1225	=item cf::region::find_by_path $path
		1226
		1227	Tries to decuce the probable region for a map knowing only its path.
		1228
		1229	=cut
		1230
		1231	sub find_by_path($) {
		1232	my ($path) = @_;
		1233
		1234	my ($match, $specificity);
		1235
		1236	for my $region (list) {
		1237	if ($region->match && $path =~ $region->match) {
		1238	($match, $specificity) = ($region, $region->specificity)
		1239	if $region->specificity > $specificity;
		1240	}
		1241	}
		1242
		1243	$match
		1244	}
		1245
		1246	=back
		1247
		1248	=head3 cf::map
		1249
		1250	=over 4
		1251
		1252	=cut
		1253
		1254	package cf::map;
		1255
		1256	use Fcntl;
		1257	use Coro::AIO;
		1258
		1259	use overload
		1260	'""' => \&as_string,
		1261	fallback => 1;
		1262
		1263	our $MAX_RESET = 3600;
		1264	our $DEFAULT_RESET = 3000;
		1265
		1266	sub generate_random_map {
		1267	my ($self, $rmp) = @_;
		1268	# mit "rum" bekleckern, nicht
		1269	$self->_create_random_map (
		1270	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1271	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1272	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1273	$rmp->{exit_on_final_map},
		1274	$rmp->{xsize}, $rmp->{ysize},
		1275	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1276	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1277	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1278	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1279	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1280	(cf::region::find $rmp->{region}), $rmp->{custom}
		1281	)
		1282	}
		1283
		1284	=item cf::map->register ($regex, $prio)
		1285
		1286	Register a handler for the map path matching the given regex at the
		1287	givne priority (higher is better, built-in handlers have priority 0, the
		1288	default).
		1289
		1290	=cut
		1291
		1292	sub register {
		1293	my (undef, $regex, $prio) = @_;
		1294	my $pkg = caller;
		1295
		1296	no strict;
		1297	push @{"$pkg\::ISA"}, __PACKAGE__;
		1298
		1299	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1300	}
		1301
		1302	# also paths starting with '/'
		1303	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1304
		1305	sub thawer_merge {
		1306	my ($self, $merge) = @_;
		1307
		1308	# we have to keep some variables in memory intact
		1309	local $self->{path};
		1310	local $self->{load_path};
		1311	local $self->{deny_save};
		1312	local $self->{deny_reset};
		1313
		1314	$self->SUPER::thawer_merge ($merge);
		1315	}
		1316
		1317	sub normalise {
		1318	my ($path, $base) = @_;
		1319
		1320	$path = "$path"; # make sure its a string
		1321
		1322	$path =~ s/\.map$//;
		1323
		1324	# map plan:
		1325	#
		1326	# /! non-realised random map exit (special hack!)
		1327	# {... are special paths that are not being touched
		1328	# ?xxx/... are special absolute paths
		1329	# ?random/... random maps
		1330	# /... normal maps
		1331	# ~user/... per-player map of a specific user
		1332
		1333	$path =~ s/$PATH_SEP/\//go;
		1334
		1335	# treat it as relative path if it starts with
		1336	# something that looks reasonable
		1337	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1338	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1339
		1340	$base =~ s{[^/]+/?$}{};
		1341	$path = "$base/$path";
		1342	}
		1343
		1344	for ($path) {
		1345	redo if s{//}{/};
		1346	redo if s{/\.?/}{/};
		1347	redo if s{/[^/]+/\.\./}{/};
		1348	}
		1349
		1350	$path
		1351	}
		1352
		1353	sub new_from_path {
		1354	my (undef, $path, $base) = @_;
		1355
		1356	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1357
		1358	$path = normalise $path, $base;
		1359
		1360	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1361	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1362	my $self = bless cf::map::new, $pkg;
		1363	$self->{path} = $path; $self->path ($path);
		1364	$self->init; # pass $1 etc.
		1365	return $self;
		1366	}
		1367	}
		1368
		1369	Carp::carp "unable to resolve path '$path' (base '$base').";
		1370	()
		1371	}
		1372
		1373	sub init {
		1374	my ($self) = @_;
		1375
		1376	$self
		1377	}
		1378
		1379	sub as_string {
		1380	my ($self) = @_;
		1381
		1382	"$self->{path}"
		1383	}
		1384
		1385	# the displayed name, this is a one way mapping
		1386	sub visible_name {
		1387	&as_string
		1388	}
		1389
		1390	# the original (read-only) location
		1391	sub load_path {
		1392	my ($self) = @_;
		1393
		1394	"$MAPDIR/$self->{path}.map"
		1395	}
		1396
		1397	# the temporary/swap location
		1398	sub save_path {
		1399	my ($self) = @_;
		1400
		1401	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1402	"$TMPDIR/$path.map"
		1403	}
		1404
		1405	# the unique path, undef == no special unique path
		1406	sub uniq_path {
		1407	my ($self) = @_;
		1408
		1409	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1410	"$UNIQUEDIR/$path"
		1411	}
		1412
		1413	# and all this just because we cannot iterate over
		1414	# all maps in C++...
		1415	sub change_all_map_light {
		1416	my ($change) = @_;
		1417
		1418	$_->change_map_light ($change)
		1419	for grep $_->outdoor, values %cf::MAP;
		1420	}
		1421
		1422	sub unlink_save {
		1423	my ($self) = @_;
		1424
		1425	utf8::encode (my $save = $self->save_path);
		1426	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1427	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1428	}
		1429
		1430	sub load_header_from($) {
		1431	my ($self, $path) = @_;
		1432
		1433	utf8::encode $path;
		1434	#aio_open $path, O_RDONLY, 0
		1435	# or return;
		1436
		1437	$self->_load_header ($path)
		1438	or return;
		1439
		1440	$self->{load_path} = $path;
		1441
		1442	1
		1443	}
		1444
		1445	sub load_header_orig {
		1446	my ($self) = @_;
		1447
		1448	$self->load_header_from ($self->load_path)
		1449	}
		1450
		1451	sub load_header_temp {
		1452	my ($self) = @_;
		1453
		1454	$self->load_header_from ($self->save_path)
		1455	}
		1456
		1457	sub prepare_temp {
		1458	my ($self) = @_;
		1459
		1460	$self->last_access ((delete $self->{last_access})
		1461	|| $cf::RUNTIME); #d#
		1462	# safety
		1463	$self->{instantiate_time} = $cf::RUNTIME
		1464	if $self->{instantiate_time} > $cf::RUNTIME;
		1465	}
		1466
		1467	sub prepare_orig {
		1468	my ($self) = @_;
		1469
		1470	$self->{load_original} = 1;
		1471	$self->{instantiate_time} = $cf::RUNTIME;
		1472	$self->last_access ($cf::RUNTIME);
		1473	$self->instantiate;
		1474	}
		1475
		1476	sub load_header {
		1477	my ($self) = @_;
		1478
		1479	if ($self->load_header_temp) {
		1480	$self->prepare_temp;
		1481	} else {
		1482	$self->load_header_orig
		1483	or return;
		1484	$self->prepare_orig;
		1485	}
		1486
		1487	$self->default_region (cf::region::find_by_path $self->{path})
		1488	unless $self->default_region;
		1489
		1490	1
		1491	}
		1492
		1493	sub find;
		1494	sub find {
		1495	my ($path, $origin) = @_;
		1496
		1497	$path = normalise $path, $origin && $origin->path;
		1498
		1499	cf::lock_wait "map_find:$path";
		1500
		1501	$cf::MAP{$path} || do {
		1502	my $guard = cf::lock_acquire "map_find:$path";
		1503	my $map = new_from_path cf::map $path
		1504	or return;
		1505
		1506	$map->{last_save} = $cf::RUNTIME;
		1507
		1508	$map->load_header
		1509	or return;
		1510
		1511	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1512	# doing this can freeze the server in a sync job, obviously
		1513	#$cf::WAIT_FOR_TICK->wait;
		1514	$map->reset;
		1515	undef $guard;
		1516	return find $path;
		1517	}
		1518
		1519	$cf::MAP{$path} = $map
		1520	}
		1521	}
		1522
		1523	sub pre_load { }
		1524	sub post_load { }
		1525
		1526	sub load {
		1527	my ($self) = @_;
		1528
		1529	local $self->{deny_reset} = 1; # loading can take a long time
		1530
		1531	my $path = $self->{path};
		1532
		1533	{
		1534	my $guard = cf::lock_acquire "map_load:$path";
		1535
		1536	return if $self->in_memory != cf::MAP_SWAPPED;
		1537
		1538	$self->in_memory (cf::MAP_LOADING);
		1539
		1540	$self->alloc;
		1541
		1542	$self->pre_load;
		1543	Coro::cede;
		1544
		1545	$self->_load_objects ($self->{load_path}, 1)
		1546	or return;
		1547
		1548	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1549	if delete $self->{load_original};
		1550
		1551	if (my $uniq = $self->uniq_path) {
		1552	utf8::encode $uniq;
		1553	if (aio_open $uniq, O_RDONLY, 0) {
		1554	$self->clear_unique_items;
		1555	$self->_load_objects ($uniq, 0);
		1556	}
		1557	}
		1558
		1559	Coro::cede;
		1560	# now do the right thing for maps
		1561	$self->link_multipart_objects;
		1562	$self->difficulty ($self->estimate_difficulty)
		1563	unless $self->difficulty;
		1564	Coro::cede;
		1565
		1566	unless ($self->{deny_activate}) {
		1567	$self->decay_objects;
		1568	$self->fix_auto_apply;
		1569	$self->update_buttons;
		1570	Coro::cede;
		1571	$self->set_darkness_map;
		1572	Coro::cede;
		1573	$self->activate;
		1574	}
		1575
		1576	$self->in_memory (cf::MAP_IN_MEMORY);
		1577	}
		1578
		1579	$self->post_load;
		1580	}
		1581
		1582	sub customise_for {
		1583	my ($self, $ob) = @_;
		1584
		1585	return find "~" . $ob->name . "/" . $self->{path}
		1586	if $self->per_player;
		1587
		1588	$self
		1589	}
		1590
		1591	# find and load all maps in the 3x3 area around a map
		1592	sub load_diag {
724	my ($map) = @_;	1593	my ($map) = @_;
725		1594
726	my $path = $map->tmpname;	1595	my @diag; # diagonal neighbours
727	defined $path or return;
728		1596
729	unlink "$path.pst";	1597	for (0 .. 3) {
730	};	1598	my $neigh = $map->tile_path ($_)
		1599	or next;
		1600	$neigh = find $neigh, $map
		1601	or next;
		1602	$neigh->load;
731		1603
732	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1604	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1605	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1606	}
733		1607
734	#############################################################################	1608	for (@diag) {
735	# load/save perl data associated with player->ob objects	1609	my $neigh = find @$_
736		1610	or next;
737	sub all_objects(@) {	1611	$neigh->load;
738	@_, map all_objects ($_->inv), @_	1612	}
739	}	1613	}
740		1614
741	# TODO: compatibility cruft, remove when no longer needed	1615	sub find_sync {
742	cf::player->attach (	1616	my ($path, $origin) = @_;
743	on_load => sub {
744	my ($pl, $path) = @_;
745		1617
746	for my $o (all_objects $pl->ob) {	1618	cf::sync_job { find $path, $origin }
747	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1619	}
748	$o->set_ob_key_value ("_perl_data");
749		1620
750	%$o = %{ Storable::thaw pack "H*", $value };	1621	sub do_load_sync {
		1622	my ($map) = @_;
		1623
		1624	cf::sync_job { $map->load };
		1625	}
		1626
		1627	our %MAP_PREFETCH;
		1628	our $MAP_PREFETCHER = undef;
		1629
		1630	sub find_async {
		1631	my ($path, $origin) = @_;
		1632
		1633	$path = normalise $path, $origin && $origin->{path};
		1634
		1635	if (my $map = $cf::MAP{$path}) {
		1636	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1637	}
		1638
		1639	undef $MAP_PREFETCH{$path};
		1640	$MAP_PREFETCHER ||= cf::async {
		1641	while (%MAP_PREFETCH) {
		1642	for my $path (keys %MAP_PREFETCH) {
		1643	my $map = find $path
		1644	or next;
		1645	$map->load;
		1646
		1647	delete $MAP_PREFETCH{$path};
751	}	1648	}
752	}	1649	}
		1650	undef $MAP_PREFETCHER;
		1651	};
		1652	$MAP_PREFETCHER->prio (6);
		1653
		1654	()
		1655	}
		1656
		1657	sub save {
		1658	my ($self) = @_;
		1659
		1660	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1661
		1662	$self->{last_save} = $cf::RUNTIME;
		1663
		1664	return unless $self->dirty;
		1665
		1666	my $save = $self->save_path; utf8::encode $save;
		1667	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1668
		1669	$self->{load_path} = $save;
		1670
		1671	return if $self->{deny_save};
		1672
		1673	local $self->{last_access} = $self->last_access;#d#
		1674
		1675	cf::async {
		1676	$_->contr->save for $self->players;
		1677	};
		1678
		1679	if ($uniq) {
		1680	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1681	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1682	} else {
		1683	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
753	},	1684	}
754	);	1685	}
755		1686
756	#############################################################################	1687	sub swap_out {
		1688	my ($self) = @_;
757		1689
758	=head2 CORE EXTENSIONS	1690	# save first because save cedes
		1691	$self->save;
759		1692
760	Functions and methods that extend core crossfire objects.	1693	my $lock = cf::lock_acquire "map_data:" . $self->path;
761		1694
762	=head3 cf::player	1695	return if $self->players;
		1696	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1697	return if $self->{deny_save};
		1698
		1699	$self->clear;
		1700	$self->in_memory (cf::MAP_SWAPPED);
		1701	}
		1702
		1703	sub reset_at {
		1704	my ($self) = @_;
		1705
		1706	# TODO: safety, remove and allow resettable per-player maps
		1707	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1708	return 1e99 if $self->{deny_reset};
		1709
		1710	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1711	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1712
		1713	$time + $to
		1714	}
		1715
		1716	sub should_reset {
		1717	my ($self) = @_;
		1718
		1719	$self->reset_at <= $cf::RUNTIME
		1720	}
		1721
		1722	sub reset {
		1723	my ($self) = @_;
		1724
		1725	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1726
		1727	return if $self->players;
		1728	return if $self->isa ("ext::map_per_player");#d#
		1729
		1730	warn "resetting map ", $self->path;#d#
		1731
		1732	$self->in_memory (cf::MAP_SWAPPED);
		1733
		1734	# need to save uniques path
		1735	unless ($self->{deny_save}) {
		1736	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1737
		1738	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1739	if $uniq;
		1740	}
		1741
		1742	delete $cf::MAP{$self->path};
		1743
		1744	$self->clear;
		1745
		1746	$_->clear_links_to ($self) for values %cf::MAP;
		1747
		1748	$self->unlink_save;
		1749	$self->destroy;
		1750	}
		1751
		1752	my $nuke_counter = "aaaa";
		1753
		1754	sub nuke {
		1755	my ($self) = @_;
		1756
		1757	delete $cf::MAP{$self->path};
		1758
		1759	$self->unlink_save;
		1760
		1761	bless $self, "cf::map";
		1762	delete $self->{deny_reset};
		1763	$self->{deny_save} = 1;
		1764	$self->reset_timeout (1);
		1765	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1766
		1767	$cf::MAP{$self->path} = $self;
		1768
		1769	$self->reset; # polite request, might not happen
		1770	}
		1771
		1772	=item cf::map::unique_maps
		1773
		1774	Returns an arrayref of paths of all shared maps that have
		1775	instantiated unique items. May block.
		1776
		1777	=cut
		1778
		1779	sub unique_maps() {
		1780	my $files = aio_readdir $UNIQUEDIR
		1781	or return;
		1782
		1783	my @paths;
		1784
		1785	for (@$files) {
		1786	utf8::decode $_;
		1787	next if /\.pst$/;
		1788	next unless /^$PATH_SEP/o;
		1789
		1790	push @paths, cf::map::normalise $_;
		1791	}
		1792
		1793	\@paths
		1794	}
		1795
		1796	package cf;
		1797
		1798	=back
		1799
		1800	=head3 cf::object
		1801
		1802	=cut
		1803
		1804	package cf::object;
763		1805
764	=over 4	1806	=over 4
765		1807
766	=item cf::player::exists $login	1808	=item $ob->inv_recursive
767		1809
768	Returns true when the given account exists.	1810	Returns the inventory of the object _and_ their inventories, recursively.
769		1811
770	=cut	1812	=cut
771		1813
772	sub cf::player::exists($) {	1814	sub inv_recursive_;
773	cf::player::find $_[0]	1815	sub inv_recursive_ {
774	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1816	map { $_, inv_recursive_ $_->inv } @_
775	}	1817	}
776		1818
777	=item $player->ext_reply ($msgid, $msgtype, %msg)	1819	sub inv_recursive {
778		1820	inv_recursive_ inv $_[0]
779	Sends an ext reply to the player.
780
781	=cut
782
783	sub cf::player::ext_reply($$$%) {
784	my ($self, $id, %msg) = @_;
785
786	$msg{msgid} = $id;
787
788	$self->send ("ext " . to_json \%msg);
789	}	1821	}
		1822
		1823	package cf;
790		1824
791	=back	1825	=back
792		1826
793	=head3 cf::object::player	1827	=head3 cf::object::player
794		1828
…		…
832	(ref $cf::CFG{"may_$access"}	1866	(ref $cf::CFG{"may_$access"}
833	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
834	: $cf::CFG{"may_$access"})	1868	: $cf::CFG{"may_$access"})
835	}	1869	}
836		1870
		1871	=item $player_object->enter_link
		1872
		1873	Freezes the player and moves him/her to a special map (C<{link}>).
		1874
		1875	The player should be reasonably safe there for short amounts of time. You
		1876	I<MUST> call C<leave_link> as soon as possible, though.
		1877
		1878	Will never block.
		1879
		1880	=item $player_object->leave_link ($map, $x, $y)
		1881
		1882	Moves the player out of the special C<{link}> map onto the specified
		1883	map. If the map is not valid (or omitted), the player will be moved back
		1884	to the location he/she was before the call to C<enter_link>, or, if that
		1885	fails, to the emergency map position.
		1886
		1887	Might block.
		1888
		1889	=cut
		1890
		1891	sub link_map {
		1892	unless ($LINK_MAP) {
		1893	$LINK_MAP = cf::map::find "{link}"
		1894	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1895	$LINK_MAP->load;
		1896	}
		1897
		1898	$LINK_MAP
		1899	}
		1900
		1901	sub cf::object::player::enter_link {
		1902	my ($self) = @_;
		1903
		1904	$self->deactivate_recursive;
		1905
		1906	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1907
		1908	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1909	if $self->map;
		1910
		1911	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1912	}
		1913
		1914	sub cf::object::player::leave_link {
		1915	my ($self, $map, $x, $y) = @_;
		1916
		1917	my $link_pos = delete $self->{_link_pos};
		1918
		1919	unless ($map) {
		1920	# restore original map position
		1921	($map, $x, $y) = @{ $link_pos || [] };
		1922	$map = cf::map::find $map;
		1923
		1924	unless ($map) {
		1925	($map, $x, $y) = @$EMERGENCY_POSITION;
		1926	$map = cf::map::find $map
		1927	or die "FATAL: cannot load emergency map\n";
		1928	}
		1929	}
		1930
		1931	($x, $y) = (-1, -1)
		1932	unless (defined $x) && (defined $y);
		1933
		1934	# use -1 or undef as default coordinates, not 0, 0
		1935	($x, $y) = ($map->enter_x, $map->enter_y)
		1936	if $x <=0 && $y <= 0;
		1937
		1938	$map->load;
		1939	$map->load_diag;
		1940
		1941	return unless $self->contr->active;
		1942	$self->activate_recursive;
		1943
		1944	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1945	$self->enter_map ($map, $x, $y);
		1946	}
		1947
		1948	cf::player->attach (
		1949	on_logout => sub {
		1950	my ($pl) = @_;
		1951
		1952	# abort map switching before logout
		1953	if ($pl->ob->{_link_pos}) {
		1954	cf::sync_job {
		1955	$pl->ob->leave_link
		1956	};
		1957	}
		1958	},
		1959	on_login => sub {
		1960	my ($pl) = @_;
		1961
		1962	# try to abort aborted map switching on player login :)
		1963	# should happen only on crashes
		1964	if ($pl->ob->{_link_pos}) {
		1965	$pl->ob->enter_link;
		1966	(async {
		1967	$pl->ob->reply (undef,
		1968	"There was an internal problem at your last logout, "
		1969	. "the server will try to bring you to your intended destination in a second.",
		1970	cf::NDI_RED);
		1971	# we need this sleep as the login has a concurrent enter_exit running
		1972	# and this sleep increases chances of the player not ending up in scorn
		1973	Coro::Timer::sleep 1;
		1974	$pl->ob->leave_link;
		1975	})->prio (2);
		1976	}
		1977	},
		1978	);
		1979
		1980	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1981
		1982	Moves the player to the given map-path and coordinates by first freezing
		1983	her, loading and preparing them map, calling the provided $check callback
		1984	that has to return the map if sucecssful, and then unfreezes the player on
		1985	the new (success) or old (failed) map position.
		1986
		1987	=cut
		1988
		1989	sub cf::object::player::goto {
		1990	my ($self, $path, $x, $y, $check) = @_;
		1991
		1992	#d# #TODO#
		1993	if ($check && !ref $check) {
		1994	warn Carp::longmess "goto called with non-ref check argument";#d#
		1995	undef $check;
		1996	}
		1997
		1998	$self->enter_link;
		1999
		2000	(async {
		2001	my $map = eval {
		2002	my $map = cf::map::find $path;
		2003
		2004	if ($map) {
		2005	$map = $map->customise_for ($self);
		2006	$map = $check->($map) if $check && $map;
		2007	} else {
		2008	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		2009	}
		2010
		2011	$map
		2012	};
		2013
		2014	if ($@) {
		2015	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		2016	LOG llevError | logBacktrace, Carp::longmess $@;
		2017	}
		2018
		2019	$self->leave_link ($map, $x, $y);
		2020	})->prio (1);
		2021	}
		2022
		2023	=item $player_object->enter_exit ($exit_object)
		2024
		2025	=cut
		2026
		2027	sub parse_random_map_params {
		2028	my ($spec) = @_;
		2029
		2030	my $rmp = { # defaults
		2031	xsize => (cf::rndm 15, 40),
		2032	ysize => (cf::rndm 15, 40),
		2033	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2034	#layout => string,
		2035	};
		2036
		2037	for (split /\n/, $spec) {
		2038	my ($k, $v) = split /\s+/, $_, 2;
		2039
		2040	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2041	}
		2042
		2043	$rmp
		2044	}
		2045
		2046	sub prepare_random_map {
		2047	my ($exit) = @_;
		2048
		2049	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2050
		2051	# all this does is basically replace the /! path by
		2052	# a new random map path (?random/...) with a seed
		2053	# that depends on the exit object
		2054
		2055	my $rmp = parse_random_map_params $exit->msg;
		2056
		2057	if ($exit->map) {
		2058	$rmp->{region} = $exit->region->name;
		2059	$rmp->{origin_map} = $exit->map->path;
		2060	$rmp->{origin_x} = $exit->x;
		2061	$rmp->{origin_y} = $exit->y;
		2062	}
		2063
		2064	$rmp->{random_seed} ||= $exit->random_seed;
		2065
		2066	my $data = cf::to_json $rmp;
		2067	my $md5 = Digest::MD5::md5_hex $data;
		2068	my $meta = "$RANDOMDIR/$md5.meta";
		2069
		2070	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2071	aio_write $fh, 0, (length $data), $data, 0;
		2072	undef $fh;
		2073	aio_rename "$meta~", $meta;
		2074
		2075	$exit->slaying ("?random/$md5");
		2076	$exit->msg (undef);
		2077	}
		2078	}
		2079
		2080	sub cf::object::player::enter_exit {
		2081	my ($self, $exit) = @_;
		2082
		2083	return unless $self->type == cf::PLAYER;
		2084
		2085	if ($exit->slaying eq "/!") {
		2086	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2087	# the problem is that $exit might not survive long enough
		2088	# so it needs to be done right now, right here
		2089	cf::sync_job { prepare_random_map $exit };
		2090	}
		2091
		2092	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2093	my $hp = $exit->stats->hp;
		2094	my $sp = $exit->stats->sp;
		2095
		2096	$self->enter_link;
		2097
		2098	(async {
		2099	$self->deactivate_recursive; # just to be sure
		2100	unless (eval {
		2101	$self->goto ($slaying, $hp, $sp);
		2102
		2103	1;
		2104	}) {
		2105	$self->message ("Something went wrong deep within the crossfire server. "
		2106	. "I'll try to bring you back to the map you were before. "
		2107	. "Please report this to the dungeon master!",
		2108	cf::NDI_UNIQUE | cf::NDI_RED);
		2109
		2110	warn "ERROR in enter_exit: $@";
		2111	$self->leave_link;
		2112	}
		2113	})->prio (1);
		2114	}
		2115
837	=head3 cf::client	2116	=head3 cf::client
838		2117
839	=over 4	2118	=over 4
840		2119
841	=item $client->send_drawinfo ($text, $flags)	2120	=item $client->send_drawinfo ($text, $flags)
…		…
847		2126
848	sub cf::client::send_drawinfo {	2127	sub cf::client::send_drawinfo {
849	my ($self, $text, $flags) = @_;	2128	my ($self, $text, $flags) = @_;
850		2129
851	utf8::encode $text;	2130	utf8::encode $text;
852	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2131	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
853	}	2132	}
854		2133
		2134	=item $client->ext_event ($type, %msg)
		2135
		2136	Sends an exti event to the client.
		2137
		2138	=cut
		2139
		2140	sub cf::client::ext_event($$%) {
		2141	my ($self, $type, %msg) = @_;
		2142
		2143	$msg{msgtype} = "event_$type";
		2144	$self->send_packet ("ext " . cf::to_json \%msg);
		2145	}
855		2146
856	=item $success = $client->query ($flags, "text", \&cb)	2147	=item $success = $client->query ($flags, "text", \&cb)
857		2148
858	Queues a query to the client, calling the given callback with	2149	Queues a query to the client, calling the given callback with
859	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2150	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
…		…
884	on_reply => sub {	2175	on_reply => sub {
885	my ($ns, $msg) = @_;	2176	my ($ns, $msg) = @_;
886		2177
887	# this weird shuffling is so that direct followup queries	2178	# this weird shuffling is so that direct followup queries
888	# get handled first	2179	# get handled first
889	my $queue = delete $ns->{query_queue};	2180	my $queue = delete $ns->{query_queue}
		2181	or return; # be conservative, not sure how that can happen, but we saw a crash here
890		2182
891	(shift @$queue)->[1]->($msg);	2183	(shift @$queue)->[1]->($msg);
		2184	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
892		2185
893	push @{ $ns->{query_queue} }, @$queue;	2186	push @{ $ns->{query_queue} }, @$queue;
894		2187
895	if (@{ $ns->{query_queue} } == @$queue) {	2188	if (@{ $ns->{query_queue} } == @$queue) {
896	if (@$queue) {	2189	if (@$queue) {
…		…
900	}	2193	}
901	}	2194	}
902	},	2195	},
903	);	2196	);
904		2197
905	=item $client->coro (\&cb)	2198	=item $client->async (\&cb)
906		2199
907	Create a new coroutine, running the specified callback. The coroutine will	2200	Create a new coroutine, running the specified callback. The coroutine will
908	be automatically cancelled when the client gets destroyed (e.g. on logout,	2201	be automatically cancelled when the client gets destroyed (e.g. on logout,
909	or loss of connection).	2202	or loss of connection).
910		2203
911	=cut	2204	=cut
912		2205
913	sub cf::client::coro {	2206	sub cf::client::async {
914	my ($self, $cb) = @_;	2207	my ($self, $cb) = @_;
915		2208
916	my $coro; $coro = async {	2209	my $coro = &Coro::async ($cb);
917	eval {	2210
918	$cb->();	2211	$coro->on_destroy (sub {
919	};
920	warn $@ if $@;
921	delete $self->{_coro}{$coro+0};	2212	delete $self->{_coro}{$coro+0};
922	};	2213	});
923		2214
924	$self->{_coro}{$coro+0} = $coro;	2215	$self->{_coro}{$coro+0} = $coro;
		2216
		2217	$coro
925	}	2218	}
926		2219
927	cf::client->attach (	2220	cf::client->attach (
928	on_destroy => sub {	2221	on_destroy => sub {
929	my ($ns) = @_;	2222	my ($ns) = @_;
…		…
954		2247
955	# here we export the classes and methods available to script code	2248	# here we export the classes and methods available to script code
956		2249
957	=pod	2250	=pod
958		2251
959	The following fucntions and emthods are available within a safe environment:	2252	The following functions and methods are available within a safe environment:
960		2253
961	cf::object contr pay_amount pay_player map	2254	cf::object contr pay_amount pay_player map
962	cf::object::player player	2255	cf::object::player player
963	cf::player peaceful	2256	cf::player peaceful
964	cf::map trigger	2257	cf::map trigger
…		…
1049	#############################################################################	2342	#############################################################################
1050		2343
1051	=head2 EXTENSION DATABASE SUPPORT	2344	=head2 EXTENSION DATABASE SUPPORT
1052		2345
1053	Crossfire maintains a very simple database for extension use. It can	2346	Crossfire maintains a very simple database for extension use. It can
1054	currently store anything that can be serialised using Storable, which	2347	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
1055	excludes objects.	2348	convert to/from binary).
1056		2349
1057	The parameter C<$family> should best start with the name of the extension	2350	The parameter C<$family> should best start with the name of the extension
1058	using it, it should be unique.	2351	using it, it should be unique.
1059		2352
1060	=over 4	2353	=over 4
1061		2354
1062	=item $hashref = cf::db_get $family
1063
1064	Return a hashref for use by the extension C<$family>, which can be
1065	modified. After modifications, you have to call C<cf::db_dirty> or
1066	C<cf::db_sync>.
1067
1068	=item $value = cf::db_get $family => $key	2355	=item $value = cf::db_get $family => $key
1069		2356
1070	Returns a single value from the database	2357	Returns a single value from the database.
1071
1072	=item cf::db_put $family => $hashref
1073
1074	Stores the given family hashref into the database. Updates are delayed, if
1075	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1076		2358
1077	=item cf::db_put $family => $key => $value	2359	=item cf::db_put $family => $key => $value
1078		2360
1079	Stores the given C<$value> in the family hash. Updates are delayed, if you	2361	Stores the given C<$value> in the family.
1080	want the data to be synced to disk immediately, use C<cf::db_sync>.
1081
1082	=item cf::db_dirty
1083
1084	Marks the database as dirty, to be updated at a later time.
1085
1086	=item cf::db_sync
1087
1088	Immediately write the database to disk I<if it is dirty>.
1089		2362
1090	=cut	2363	=cut
1091		2364
1092	our $DB;	2365	our $DB;
1093		2366
1094	{	2367	sub db_init {
1095	my $path = cf::localdir . "/database.pst";	2368	unless ($DB) {
		2369	$DB = BDB::db_create $DB_ENV;
1096		2370
1097	sub db_load() {	2371	cf::sync_job {
1098	warn "loading database $path\n";#d# remove later	2372	eval {
1099	$DB = stat $path ? Storable::retrieve $path : { };	2373	$DB->set_flags (BDB::CHKSUM);
1100	}
1101		2374
1102	my $pid;	2375	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1103		2376	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1104	sub db_save() {	2377	cf::cleanup "db_open(db): $!" if $!;
1105	warn "saving database $path\n";#d# remove later	2378	};
1106	waitpid $pid, 0 if $pid;	2379	cf::cleanup "db_open(db): $@" if $@;
1107	if (0 == ($pid = fork)) {
1108	$DB->{_meta}{version} = 1;
1109	Storable::nstore $DB, "$path~";
1110	rename "$path~", $path;
1111	cf::_exit 0 if defined $pid;
1112	}	2380	};
1113	}
1114
1115	my $dirty;
1116
1117	sub db_sync() {
1118	db_save if $dirty;
1119	undef $dirty;
1120	}
1121
1122	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1123	db_sync;
1124	});	2381	}
		2382	}
1125		2383
1126	sub db_dirty() {
1127	$dirty = 1;
1128	$idle->start;
1129	}
1130
1131	sub db_get($;$) {	2384	sub db_get($$) {
1132	@_ >= 2	2385	my $key = "$_[0]/$_[1]";
1133	? $DB->{$_[0]}{$_[1]}
1134	: ($DB->{$_[0]} ||= { })
1135	}
1136		2386
		2387	cf::sync_job {
		2388	BDB::db_get $DB, undef, $key, my $data;
		2389
		2390	$! ? ()
		2391	: $data
		2392	}
		2393	}
		2394
1137	sub db_put($$;$) {	2395	sub db_put($$$) {
1138	if (@_ >= 3) {	2396	BDB::dbreq_pri 4;
1139	$DB->{$_[0]}{$_[1]} = $_[2];	2397	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1140	} else {	2398	}
1141	$DB->{$_[0]} = $_[1];
1142	}
1143	db_dirty;
1144	}
1145		2399
1146	cf::global->attach (	2400	=item cf::cache $id => [$paths...], $processversion => $process
1147	prio => 10000,	2401
1148	on_cleanup => sub {	2402	Generic caching function that returns the value of the resource $id,
1149	db_sync;	2403	caching and regenerating as required.
		2404
		2405	This function can block.
		2406
		2407	=cut
		2408
		2409	sub cache {
		2410	my ($id, $src, $processversion, $process) = @_;
		2411
		2412	my $meta =
		2413	join "\x00",
		2414	$processversion,
		2415	map {
		2416	aio_stat $_
		2417	and Carp::croak "$_: $!";
		2418
		2419	($_, (stat _)[7,9])
		2420	} @$src;
		2421
		2422	my $dbmeta = db_get cache => "$id/meta";
		2423	if ($dbmeta ne $meta) {
		2424	# changed, we may need to process
		2425
		2426	my @data;
		2427	my $md5;
		2428
		2429	for (0 .. $#$src) {
		2430	0 <= aio_load $src->[$_], $data[$_]
		2431	or Carp::croak "$src->[$_]: $!";
1150	},	2432	}
1151	);	2433
		2434	# if processing is expensive, check
		2435	# checksum first
		2436	if (1) {
		2437	$md5 =
		2438	join "\x00",
		2439	$processversion,
		2440	map {
		2441	Coro::cede;
		2442	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2443	} 0.. $#$src;
		2444
		2445
		2446	my $dbmd5 = db_get cache => "$id/md5";
		2447	if ($dbmd5 eq $md5) {
		2448	db_put cache => "$id/meta", $meta;
		2449
		2450	return db_get cache => "$id/data";
		2451	}
		2452	}
		2453
		2454	my $t1 = Time::HiRes::time;
		2455	my $data = $process->(\@data);
		2456	my $t2 = Time::HiRes::time;
		2457
		2458	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2459
		2460	db_put cache => "$id/data", $data;
		2461	db_put cache => "$id/md5" , $md5;
		2462	db_put cache => "$id/meta", $meta;
		2463
		2464	return $data;
		2465	}
		2466
		2467	db_get cache => "$id/data"
1152	}	2468	}
		2469
		2470	=item fork_call { }, $args
		2471
		2472	Executes the given code block with the given arguments in a seperate
		2473	process, returning the results. Everything must be serialisable with
		2474	Coro::Storable. May, of course, block. Note that the executed sub may
		2475	never block itself or use any form of Event handling.
		2476
		2477	=cut
		2478
		2479	sub fork_call(&@) {
		2480	my ($cb, @args) = @_;
		2481
		2482	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2483	# or die "socketpair: $!";
		2484	pipe my $fh1, my $fh2
		2485	or die "pipe: $!";
		2486
		2487	if (my $pid = fork) {
		2488	close $fh2;
		2489
		2490	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2491	$res = Coro::Storable::thaw $res;
		2492
		2493	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2494
		2495	die $$res unless "ARRAY" eq ref $res;
		2496
		2497	return wantarray ? @$res : $res->[-1];
		2498	} else {
		2499	reset_signals;
		2500	local $SIG{__WARN__};
		2501	local $SIG{__DIE__};
		2502	eval {
		2503	close $fh1;
		2504
		2505	my @res = eval { $cb->(@args) };
		2506	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2507	};
		2508
		2509	warn $@ if $@;
		2510	_exit 0;
		2511	}
		2512	}
		2513
		2514
1153		2515
1154	#############################################################################	2516	#############################################################################
1155	# the server's main()	2517	# the server's init and main functions
		2518
		2519	sub load_facedata($) {
		2520	my ($path) = @_;
		2521
		2522	warn "loading facedata from $path\n";
		2523
		2524	my $facedata;
		2525	0 < aio_load $path, $facedata
		2526	or die "$path: $!";
		2527
		2528	$facedata = Coro::Storable::thaw $facedata;
		2529
		2530	$facedata->{version} == 2
		2531	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2532
		2533	{
		2534	my $faces = $facedata->{faceinfo};
		2535
		2536	while (my ($face, $info) = each %$faces) {
		2537	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2538	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2539	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2540	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2541	Coro::cede;
		2542	}
		2543
		2544	while (my ($face, $info) = each %$faces) {
		2545	next unless $info->{smooth};
		2546	my $idx = cf::face::find $face
		2547	or next;
		2548	if (my $smooth = cf::face::find $info->{smooth}) {
		2549	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2550	} else {
		2551	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2552	}
		2553	Coro::cede;
		2554	}
		2555	}
		2556
		2557	{
		2558	my $anims = $facedata->{animinfo};
		2559
		2560	while (my ($anim, $info) = each %$anims) {
		2561	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2562	Coro::cede;
		2563	}
		2564
		2565	cf::anim::invalidate_all; # d'oh
		2566	}
		2567
		2568	1
		2569	}
		2570
		2571	sub reload_regions {
		2572	load_resource_file "$MAPDIR/regions"
		2573	or die "unable to load regions file\n";
		2574	}
		2575
		2576	sub reload_facedata {
		2577	load_facedata "$DATADIR/facedata"
		2578	or die "unable to load facedata\n";
		2579	}
		2580
		2581	sub reload_archetypes {
		2582	load_resource_file "$DATADIR/archetypes"
		2583	or die "unable to load archetypes\n";
		2584	}
		2585
		2586	sub reload_treasures {
		2587	load_resource_file "$DATADIR/treasures"
		2588	or die "unable to load treasurelists\n";
		2589	}
		2590
		2591	sub reload_resources {
		2592	warn "reloading resource files...\n";
		2593
		2594	reload_regions;
		2595	reload_facedata;
		2596	reload_archetypes;
		2597	reload_treasures;
		2598
		2599	warn "finished reloading resource files\n";
		2600	}
		2601
		2602	sub init {
		2603	reload_resources;
		2604	}
1156		2605
1157	sub cfg_load {	2606	sub cfg_load {
1158	open my $fh, "<:utf8", cf::confdir . "/config"	2607	open my $fh, "<:utf8", "$CONFDIR/config"
1159	or return;	2608	or return;
1160		2609
1161	local $/;	2610	local $/;
1162	*CFG = YAML::Syck::Load <$fh>;	2611	*CFG = YAML::Syck::Load <$fh>;
		2612
		2613	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2614
		2615	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2616	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2617
		2618	if (exists $CFG{mlockall}) {
		2619	eval {
		2620	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2621	and die "WARNING: m(un)lockall failed: $!\n";
		2622	};
		2623	warn $@ if $@;
		2624	}
1163	}	2625	}
1164		2626
1165	sub main {	2627	sub main {
		2628	# we must not ever block the main coroutine
		2629	local $Coro::idle = sub {
		2630	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2631	(async {
		2632	Event::one_event;
		2633	})->prio (Coro::PRIO_MAX);
		2634	};
		2635
1166	cfg_load;	2636	cfg_load;
1167	db_load;	2637	db_init;
1168	load_extensions;	2638	load_extensions;
		2639
		2640	$TICK_WATCHER->start;
1169	Event::loop;	2641	Event::loop;
1170	}	2642	}
1171		2643
1172	#############################################################################	2644	#############################################################################
1173	# initialisation	2645	# initialisation and cleanup
1174		2646
1175	sub _perl_reload(&) {	2647	# install some emergency cleanup handlers
		2648	BEGIN {
		2649	for my $signal (qw(INT HUP TERM)) {
		2650	Event->signal (
		2651	reentrant => 0,
		2652	data => WF_AUTOCANCEL,
		2653	signal => $signal,
		2654	prio => 0,
		2655	cb => sub {
		2656	cf::cleanup "SIG$signal";
		2657	},
		2658	);
		2659	}
		2660	}
		2661
		2662	sub emergency_save() {
		2663	my $freeze_guard = cf::freeze_mainloop;
		2664
		2665	warn "enter emergency perl save\n";
		2666
		2667	cf::sync_job {
		2668	# use a peculiar iteration method to avoid tripping on perl
		2669	# refcount bugs in for. also avoids problems with players
		2670	# and maps saved/destroyed asynchronously.
		2671	warn "begin emergency player save\n";
		2672	for my $login (keys %cf::PLAYER) {
		2673	my $pl = $cf::PLAYER{$login} or next;
		2674	$pl->valid or next;
		2675	$pl->save;
		2676	}
		2677	warn "end emergency player save\n";
		2678
		2679	warn "begin emergency map save\n";
		2680	for my $path (keys %cf::MAP) {
		2681	my $map = $cf::MAP{$path} or next;
		2682	$map->valid or next;
		2683	$map->save;
		2684	}
		2685	warn "end emergency map save\n";
		2686
		2687	warn "begin emergency database checkpoint\n";
		2688	BDB::db_env_txn_checkpoint $DB_ENV;
		2689	warn "end emergency database checkpoint\n";
		2690	};
		2691
		2692	warn "leave emergency perl save\n";
		2693	}
		2694
		2695	sub post_cleanup {
1176	my ($msg) = @_;	2696	my ($make_core) = @_;
1177		2697
1178	$msg->("reloading...");	2698	warn Carp::longmess "post_cleanup backtrace"
		2699	if $make_core;
		2700	}
1179		2701
1180	eval {	2702	sub do_reload_perl() {
1181	# cancel all watchers	2703	# can/must only be called in main
		2704	if ($Coro::current != $Coro::main) {
		2705	warn "can only reload from main coroutine";
		2706	return;
		2707	}
		2708
		2709	warn "reloading...";
		2710
		2711	warn "entering sync_job";
		2712
		2713	cf::sync_job {
		2714	cf::write_runtime; # external watchdog should not bark
		2715	cf::emergency_save;
		2716	cf::write_runtime; # external watchdog should not bark
		2717
		2718	warn "syncing database to disk";
		2719	BDB::db_env_txn_checkpoint $DB_ENV;
		2720
		2721	# if anything goes wrong in here, we should simply crash as we already saved
		2722
		2723	warn "cancelling all WF_AUTOCANCEL watchers";
1182	for (Event::all_watchers) {	2724	for (Event::all_watchers) {
1183	$_->cancel if $_->data & WF_AUTOCANCEL;	2725	$_->cancel if $_->data & WF_AUTOCANCEL;
1184	}	2726	}
1185		2727
1186	# unload all extensions	2728	warn "flushing outstanding aio requests";
1187	for (@exts) {	2729	for (;;) {
1188	$msg->("unloading <$_>");	2730	BDB::flush;
1189	unload_extension $_;	2731	IO::AIO::flush;
		2732	Coro::cede;
		2733	last unless IO::AIO::nreqs || BDB::nreqs;
		2734	warn "iterate...";
		2735	}
		2736
		2737	++$RELOAD;
		2738
		2739	warn "cancelling all extension coros";
		2740	$_->cancel for values %EXT_CORO;
		2741	%EXT_CORO = ();
		2742
		2743	warn "removing commands";
		2744	%COMMAND = ();
		2745
		2746	warn "removing ext commands";
		2747	%EXTCMD = ();
		2748
		2749	warn "unloading/nuking all extensions";
		2750	for my $pkg (@EXTS) {
		2751	warn "... unloading $pkg";
		2752
		2753	if (my $cb = $pkg->can ("unload")) {
		2754	eval {
		2755	$cb->($pkg);
		2756	1
		2757	} or warn "$pkg unloaded, but with errors: $@";
1190	}	2758	}
1191		2759
		2760	warn "... nuking $pkg";
		2761	Symbol::delete_package $pkg;
		2762	}
		2763
1192	# unload all modules loaded from $LIBDIR	2764	warn "unloading all perl modules loaded from $LIBDIR";
1193	while (my ($k, $v) = each %INC) {	2765	while (my ($k, $v) = each %INC) {
1194	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2766	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1195		2767
1196	$msg->("removing <$k>");	2768	warn "... unloading $k";
1197	delete $INC{$k};	2769	delete $INC{$k};
1198		2770
1199	$k =~ s/\.pm$//;	2771	$k =~ s/\.pm$//;
1200	$k =~ s/\//::/g;	2772	$k =~ s/\//::/g;
1201		2773
…		…
1204	}	2776	}
1205		2777
1206	Symbol::delete_package $k;	2778	Symbol::delete_package $k;
1207	}	2779	}
1208		2780
1209	# sync database to disk
1210	cf::db_sync;
1211
1212	# get rid of safe::, as good as possible	2781	warn "getting rid of safe::, as good as possible";
1213	Symbol::delete_package "safe::$_"	2782	Symbol::delete_package "safe::$_"
1214	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2783	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1215		2784
1216	# remove register_script_function callbacks
1217	# TODO
1218
1219	# unload cf.pm "a bit"	2785	warn "unloading cf.pm \"a bit\"";
1220	delete $INC{"cf.pm"};	2786	delete $INC{"cf.pm"};
		2787	delete $INC{"cf/pod.pm"};
1221		2788
1222	# don't, removes xs symbols, too,	2789	# don't, removes xs symbols, too,
1223	# and global variables created in xs	2790	# and global variables created in xs
1224	#Symbol::delete_package __PACKAGE__;	2791	#Symbol::delete_package __PACKAGE__;
1225		2792
1226	# reload cf.pm	2793	warn "unload completed, starting to reload now";
		2794
1227	$msg->("reloading cf.pm");	2795	warn "reloading cf.pm";
1228	require cf;	2796	require cf;
1229	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2797	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1230		2798
1231	# load config and database again	2799	warn "loading config and database again";
1232	cf::cfg_load;	2800	cf::cfg_load;
1233	cf::db_load;
1234		2801
1235	# load extensions	2802	warn "loading extensions";
1236	$msg->("load extensions");
1237	cf::load_extensions;	2803	cf::load_extensions;
1238		2804
1239	# reattach attachments to objects	2805	warn "reattaching attachments to objects/players";
1240	$msg->("reattach");	2806	_global_reattach; # objects, sockets
1241	_global_reattach;	2807	warn "reattaching attachments to maps";
		2808	reattach $_ for values %MAP;
		2809	warn "reattaching attachments to players";
		2810	reattach $_ for values %PLAYER;
		2811
		2812	warn "leaving sync_job";
		2813
		2814	1
		2815	} or do {
		2816	warn $@;
		2817	warn "error while reloading, exiting.";
		2818	exit 1;
1242	};	2819	};
1243	$msg->($@) if $@;
1244		2820
1245	$msg->("reloaded");	2821	warn "reloaded";
1246	};	2822	};
1247		2823
1248	sub perl_reload() {	2824	our $RELOAD_WATCHER; # used only during reload
1249	_perl_reload {	2825
1250	warn $_[0];	2826	sub reload_perl() {
1251	print "$_[0]\n";	2827	# doing reload synchronously and two reloads happen back-to-back,
		2828	# coro crashes during coro_state_free->destroy here.
		2829
		2830	$RELOAD_WATCHER ||= Event->timer (
		2831	reentrant => 0,
		2832	after => 0,
		2833	data => WF_AUTOCANCEL,
		2834	cb => sub {
		2835	do_reload_perl;
		2836	undef $RELOAD_WATCHER;
		2837	},
1252	};	2838	);
1253	}	2839	}
1254		2840
1255	register "<global>", __PACKAGE__;
1256
1257	register_command "perl-reload" => sub {	2841	register_command "reload" => sub {
1258	my ($who, $arg) = @_;	2842	my ($who, $arg) = @_;
1259		2843
1260	if ($who->flag (FLAG_WIZ)) {	2844	if ($who->flag (FLAG_WIZ)) {
1261	_perl_reload {	2845	$who->message ("reloading server.");
1262	warn $_[0];	2846	async { reload_perl };
1263	$who->message ($_[0]);	2847	}
		2848	};
		2849
		2850	unshift @INC, $LIBDIR;
		2851
		2852	my $bug_warning = 0;
		2853
		2854	our @WAIT_FOR_TICK;
		2855	our @WAIT_FOR_TICK_BEGIN;
		2856
		2857	sub wait_for_tick {
		2858	return unless $TICK_WATCHER->is_active;
		2859	return if $Coro::current == $Coro::main;
		2860
		2861	my $signal = new Coro::Signal;
		2862	push @WAIT_FOR_TICK, $signal;
		2863	$signal->wait;
		2864	}
		2865
		2866	sub wait_for_tick_begin {
		2867	return unless $TICK_WATCHER->is_active;
		2868	return if $Coro::current == $Coro::main;
		2869
		2870	my $signal = new Coro::Signal;
		2871	push @WAIT_FOR_TICK_BEGIN, $signal;
		2872	$signal->wait;
		2873	}
		2874
		2875	my $min = 1e6;#d#
		2876	my $avg = 10;
		2877	$TICK_WATCHER = Event->timer (
		2878	reentrant => 0,
		2879	parked => 1,
		2880	prio => 0,
		2881	at => $NEXT_TICK || $TICK,
		2882	data => WF_AUTOCANCEL,
		2883	cb => sub {
		2884	if ($Coro::current != $Coro::main) {
		2885	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2886	unless ++$bug_warning > 10;
		2887	return;
		2888	}
		2889
		2890	$NOW = $tick_start = Event::time;
		2891
		2892	cf::server_tick; # one server iteration
		2893
		2894	0 && sync_job {#d#
		2895	for(1..10) {
		2896	my $t = Event::time;
		2897	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2898	or die;
		2899
		2900	$map->width (50);
		2901	$map->height (50);
		2902	$map->alloc;
		2903	$map->_load_objects ("/tmp/x.map", 1);
		2904	my $t = Event::time - $t;
		2905
		2906	#next unless $t < 0.0013;#d#
		2907	if ($t < $min) {
		2908	$min = $t;
		2909	}
		2910	$avg = $avg * 0.99 + $t * 0.01;
		2911	}
		2912	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2913	exit 0;
		2914	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1264	};	2915	};
1265	}
1266	};
1267		2916
1268	unshift @INC, $LIBDIR;	2917	$RUNTIME += $TICK;
1269
1270	$TICK_WATCHER = Event->timer (
1271	prio => 0,
1272	at => $NEXT_TICK || 1,
1273	data => WF_AUTOCANCEL,
1274	cb => sub {
1275	cf::server_tick; # one server iteration
1276
1277	my $NOW = Event::time;
1278	$NEXT_TICK += $TICK;	2918	$NEXT_TICK += $TICK;
		2919
		2920	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2921	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2922	Coro::async_pool {
		2923	write_runtime
		2924	or warn "ERROR: unable to write runtime file: $!";
		2925	};
		2926	}
		2927
		2928	# my $AFTER = Event::time;
		2929	# warn $AFTER - $NOW;#d#
		2930
		2931	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2932	$sig->send;
		2933	}
		2934	while (my $sig = shift @WAIT_FOR_TICK) {
		2935	$sig->send;
		2936	}
		2937
		2938	$NOW = Event::time;
1279		2939
1280	# if we are delayed by four ticks or more, skip them all	2940	# if we are delayed by four ticks or more, skip them all
1281	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2941	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1282		2942
1283	$TICK_WATCHER->at ($NEXT_TICK);	2943	$TICK_WATCHER->at ($NEXT_TICK);
1284	$TICK_WATCHER->start;	2944	$TICK_WATCHER->start;
		2945
		2946	$LOAD = ($NOW - $tick_start) / $TICK;
		2947	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2948
		2949	_post_tick;
		2950
		2951
1285	},	2952	},
1286	);	2953	);
1287		2954
		2955	{
		2956	BDB::max_poll_time $TICK * 0.1;
		2957	$BDB_POLL_WATCHER = Event->io (
		2958	reentrant => 0,
		2959	fd => BDB::poll_fileno,
		2960	poll => 'r',
		2961	prio => 0,
		2962	data => WF_AUTOCANCEL,
		2963	cb => \&BDB::poll_cb,
		2964	);
		2965	BDB::min_parallel 8;
		2966
		2967	BDB::set_sync_prepare {
		2968	my $status;
		2969	my $current = $Coro::current;
		2970	(
		2971	sub {
		2972	$status = $!;
		2973	$current->ready; undef $current;
		2974	},
		2975	sub {
		2976	Coro::schedule while defined $current;
		2977	$! = $status;
		2978	},
		2979	)
		2980	};
		2981
		2982	unless ($DB_ENV) {
		2983	$DB_ENV = BDB::db_env_create;
		2984
		2985	cf::sync_job {
		2986	eval {
		2987	BDB::db_env_open
		2988	$DB_ENV,
		2989	$BDBDIR,
		2990	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2991	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2992	0666;
		2993
		2994	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2995
		2996	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2997	$DB_ENV->set_lk_detect;
		2998	};
		2999
		3000	cf::cleanup "db_env_open(db): $@" if $@;
		3001	};
		3002	}
		3003	}
		3004
		3005	{
		3006	IO::AIO::min_parallel 8;
		3007
		3008	undef $Coro::AIO::WATCHER;
1288	IO::AIO::max_poll_time $TICK * 0.2;	3009	IO::AIO::max_poll_time $TICK * 0.1;
1289		3010	$AIO_POLL_WATCHER = Event->io (
1290	Event->io (fd => IO::AIO::poll_fileno,	3011	reentrant => 0,
1291	poll => 'r',
1292	prio => 5,
1293	data => WF_AUTOCANCEL,	3012	data => WF_AUTOCANCEL,
		3013	fd => IO::AIO::poll_fileno,
		3014	poll => 'r',
		3015	prio => 6,
1294	cb => \&IO::AIO::poll_cb);	3016	cb => \&IO::AIO::poll_cb,
		3017	);
		3018	}
		3019
		3020	my $_log_backtrace;
		3021
		3022	sub _log_backtrace {
		3023	my ($msg, @addr) = @_;
		3024
		3025	$msg =~ s/\n//;
		3026
		3027	# limit the # of concurrent backtraces
		3028	if ($_log_backtrace < 2) {
		3029	++$_log_backtrace;
		3030	async {
		3031	my @bt = fork_call {
		3032	@addr = map { sprintf "%x", $_ } @addr;
		3033	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3034	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3035	or die "addr2line: $!";
		3036
		3037	my @funcs;
		3038	my @res = <$fh>;
		3039	chomp for @res;
		3040	while (@res) {
		3041	my ($func, $line) = splice @res, 0, 2, ();
		3042	push @funcs, "[$func] $line";
		3043	}
		3044
		3045	@funcs
		3046	};
		3047
		3048	LOG llevInfo, "[ABT] $msg\n";
		3049	LOG llevInfo, "[ABT] $_\n" for @bt;
		3050	--$_log_backtrace;
		3051	};
		3052	} else {
		3053	LOG llevInfo, "[ABT] $msg\n";
		3054	LOG llevInfo, "[ABT] [suppressed]\n";
		3055	}
		3056	}
		3057
		3058	# load additional modules
		3059	use cf::pod;
		3060
		3061	END { cf::emergency_save }
1295		3062
1296	1	3063	1
1297		3064

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