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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.107 by root, Sun Dec 31 18:10:40 2006 UTC vs.
Revision 1.272 by root, Sun Jun 3 15:32:50 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 3.3;	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;
18	use Coro::AIO;	22	use Coro::AIO;
		23	use Coro::Storable;
19		24
		25	use BDB ();
		26	use Data::Dumper;
		27	use Digest::MD5;
20	use Fcntl;	28	use Fcntl;
21	use IO::AIO 2.31 ();
22	use YAML::Syck ();	29	use YAML::Syck ();
		30	use IO::AIO 2.32 ();
23	use Time::HiRes;	31	use Time::HiRes;
		32	use Compress::LZF;
24		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
25	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
26		41
27	# 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?
28	$YAML::Syck::ImplicitUnicode = 1;	43	$YAML::Syck::ImplicitUnicode = 1;
29		44
30	$Coro::main->prio (2); # run main coroutine ("the server") with very high priority	45	$Coro::main->prio (Coro::PRIO_MAX); # run main coroutine ("the server") with very high priority
31		46
32	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload	47	sub WF_AUTOCANCEL () { 1 } # automatically cancel this watcher on reload
33		48
34	our %COMMAND = ();	49	our %COMMAND = ();
35	our %COMMAND_TIME = ();	50	our %COMMAND_TIME = ();
		51
		52	our @EXTS = (); # list of extension package names
36	our %EXTCMD = ();	53	our %EXTCMD = ();
		54	our %EXT_CORO = (); # coroutines bound to extensions
		55	our %EXT_MAP = (); # pluggable maps
37		56
		57	our $RELOAD; # number of reloads so far
38	our @EVENT;	58	our @EVENT;
39	our $LIBDIR = datadir . "/ext";
40		59
41	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(!)
42	our $TICK_WATCHER;	73	our $TICK_WATCHER;
		74	our $AIO_POLL_WATCHER;
		75	our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
43	our $NEXT_TICK;	76	our $NEXT_TICK;
44	our $NOW;	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;
45		82
46	our %CFG;	83	our %CFG;
47		84
48	our $UPTIME; $UPTIME ||= time;	85	our $UPTIME; $UPTIME ||= time;
49	our $RUNTIME;	86	our $RUNTIME;
50		87
		88	our %PLAYER; # all users
51	our %MAP; # all maps	89	our %MAP; # all maps
52	our $LINK_MAP; # the special {link} map	90	our $LINK_MAP; # the special {link} map, which is always available
53	our $FREEZE;	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 $tick_start; # for load detecting purposes
54		98
55	binmode STDOUT;	99	binmode STDOUT;
56	binmode STDERR;	100	binmode STDERR;
57		101
58	# read virtual server time, if available	102	# read virtual server time, if available
59	unless ($RUNTIME || !-e cf::localdir . "/runtime") {	103	unless ($RUNTIME || !-e "$LOCALDIR/runtime") {
60	open my $fh, "<", cf::localdir . "/runtime"	104	open my $fh, "<", "$LOCALDIR/runtime"
61	or die "unable to read runtime file: $!";	105	or die "unable to read runtime file: $!";
62	$RUNTIME = <$fh> + 0.;	106	$RUNTIME = <$fh> + 0.;
63	}	107	}
64		108
65	mkdir cf::localdir;	109	mkdir $_
66	mkdir cf::localdir . "/" . cf::playerdir;	110	for $LOCALDIR, $TMPDIR, $UNIQUEDIR, $PLAYERDIR, $RANDOMDIR, $BDBDIR;
67	mkdir cf::localdir . "/" . cf::tmpdir;
68	mkdir cf::localdir . "/" . cf::uniquedir;
69		111
70	our %EXT_CORO;	112	our $EMERGENCY_POSITION;
		113
		114	sub cf::map::normalise;
71		115
72	#############################################################################	116	#############################################################################
73		117
74	=head2 GLOBAL VARIABLES	118	=head2 GLOBAL VARIABLES
75		119
…		…
82	=item $cf::RUNTIME	126	=item $cf::RUNTIME
83		127
84	The time this server has run, starts at 0 and is increased by $cf::TICK on	128	The time this server has run, starts at 0 and is increased by $cf::TICK on
85	every server tick.	129	every server tick.
86		130
87	=item $cf::LIBDIR	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
88		134
89	The perl library directory, where extensions and cf-specific modules can	135	Various directories - "/etc", read-only install directory, perl-library
90	be found. It will be added to C<@INC> automatically.	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.
91		139
92	=item $cf::NOW	140	=item $cf::NOW
93		141
94	The time of the last (current) server tick.	142	The time of the last (current) server tick.
95		143
96	=item $cf::TICK	144	=item $cf::TICK
97		145
98	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.
99		157
100	=item %cf::CFG	158	=item %cf::CFG
101		159
102	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
103	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.
104		168
105	=back	169	=back
106		170
107	=cut	171	=cut
108		172
109	BEGIN {	173	BEGIN {
110	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
111	my $msg = join "", @_;	175	my $msg = join "", @_;
112	utf8::encode $msg;
113		176
114	$msg .= "\n"	177	$msg .= "\n"
115	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
116		179
		180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
117	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
118	};	184	};
119	}	185	}
120		186
121	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
122	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
140		206
141	$Event::DIED = sub {	207	$Event::DIED = sub {
142	warn "error in event callback: @_";	208	warn "error in event callback: @_";
143	};	209	};
144		210
145	my %ext_pkg;
146	my @exts;
147	my @hook;
148
149	=head2 UTILITY FUNCTIONS	211	=head2 UTILITY FUNCTIONS
150		212
151	=over 4	213	=over 4
152		214
153	=cut	215	=item dumpval $ref
154		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
155	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
156		239
157	=item $ref = cf::from_json $json	240	=item $ref = cf::from_json $json
158		241
159	Converts a JSON string into the corresponding perl data structure.	242	Converts a JSON string into the corresponding perl data structure.
160		243
161	=cut
162
163	sub from_json($) {
164	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
165	JSON::Syck::Load $_[0]
166	}
167
168	=item $json = cf::to_json $ref	244	=item $json = cf::to_json $ref
169		245
170	Converts a perl data structure into its JSON representation.	246	Converts a perl data structure into its JSON representation.
171		247
172	=cut	248	=item cf::lock_wait $string
173		249
174	sub to_json($) {	250	Wait until the given lock is available. See cf::lock_acquire.
175	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	251
176	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} }, $Coro::current;
		276	Coro::schedule;
		277	}
177	}	278	}
		279
		280	sub lock_acquire($) {
		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	$guard
		308	}
		309
		310	=item cf::async { BLOCK }
		311
		312	Currently the same as Coro::async_pool, meaning you cannot use
		313	C<on_destroy>, C<join> or other gimmicks on these coroutines. The only
		314	thing you are allowed to do is call C<prio> on it.
		315
		316	=cut
		317
		318	BEGIN { *async = \&Coro::async_pool }
178		319
179	=item cf::sync_job { BLOCK }	320	=item cf::sync_job { BLOCK }
180		321
181	The design of crossfire+ requires that the main coro ($Coro::main) is	322	The design of crossfire+ requires that the main coro ($Coro::main) is
182	always able to handle events or runnable, as crossfire+ is only partly	323	always able to handle events or runnable, as crossfire+ is only partly
…		…
190	=cut	331	=cut
191		332
192	sub sync_job(&) {	333	sub sync_job(&) {
193	my ($job) = @_;	334	my ($job) = @_;
194		335
195	my $busy = 1;
196	my @res;
197
198	# TODO: use suspend/resume instead
199	local $FREEZE = 1;
200
201	my $coro = Coro::async {
202	@res = eval { $job->() };
203	warn $@ if $@;
204	undef $busy;
205	};
206
207	if ($Coro::current == $Coro::main) {	336	if ($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;
208	$coro->prio (Coro::PRIO_MAX);	353	})->prio (Coro::PRIO_MAX);
		354
209	while ($busy) {	355	while ($busy) {
210	Coro::cede_notself;	356	Coro::cede or Event::one_event;
211	Event::one_event unless Coro::nready;
212	}	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]
213	} else {	367	} else {
214	$coro->join;	368	# we are in another coroutine, how wonderful, everything just works
		369
		370	$job->()
215	}	371	}
216
217	wantarray ? @res : $res[0]
218	}	372	}
219		373
220	=item $coro = cf::coro { BLOCK }	374	=item $coro = cf::async_ext { BLOCK }
221		375
222	Creates and returns a new coro. This coro is automcatially being canceled	376	Like async, but this coro is automatically being canceled when the
223	when the extension calling this is being unloaded.	377	extension calling this is being unloaded.
224		378
225	=cut	379	=cut
226		380
227	sub coro(&) {	381	sub async_ext(&) {
228	my $cb = shift;	382	my $cb = shift;
229		383
230	my $coro; $coro = async {	384	my $coro = &Coro::async ($cb);
231	eval {
232	$cb->();
233	};
234	warn $@ if $@;
235	};
236		385
237	$coro->on_destroy (sub {	386	$coro->on_destroy (sub {
238	delete $EXT_CORO{$coro+0};	387	delete $EXT_CORO{$coro+0};
239	});	388	});
240	$EXT_CORO{$coro+0} = $coro;	389	$EXT_CORO{$coro+0} = $coro;
241		390
242	$coro	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	IO::AIO::aio_utime $runtime, undef, undef;
		401
		402	my $guard = cf::lock_acquire "write_runtime";
		403
		404	my $fh = aio_open "$runtime~", O_WRONLY | O_CREAT, 0644
		405	or return;
		406
		407	my $value = $cf::RUNTIME + 90 + 10;
		408	# 10 is the runtime save interval, for a monotonic clock
		409	# 60 allows for the watchdog to kill the server.
		410
		411	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		412	and return;
		413
		414	# always fsync - this file is important
		415	aio_fsync $fh
		416	and return;
		417
		418	# touch it again to show we are up-to-date
		419	aio_utime $fh, undef, undef;
		420
		421	close $fh
		422	or return;
		423
		424	aio_rename "$runtime~", $runtime
		425	and return;
		426
		427	warn "runtime file written.\n";#d#
		428
		429	1
		430	}
		431
		432	=item cf::datalog type => key => value, ...
		433
		434	Log a datalog packet of the given type with the given key-value pairs.
		435
		436	=cut
		437
		438	sub datalog($@) {
		439	my ($type, %kv) = @_;
		440	warn "DATALOG ", JSON::XS->new->ascii->encode ({ %kv, type => $type });
243	}	441	}
244		442
245	=back	443	=back
246		444
247	=cut	445	=cut
…		…
378	our @CB_TYPE = (); # registry for type (cf-object class) based events	576	our @CB_TYPE = (); # registry for type (cf-object class) based events
379	our @CB_MAP = ();	577	our @CB_MAP = ();
380		578
381	my %attachment;	579	my %attachment;
382		580
		581	sub cf::attachable::thawer_merge {
		582	# simply override everything except _meta
		583	local $_[0]{_meta};
		584	%{$_[0]} = %{$_[1]};
		585	}
		586
383	sub _attach_cb($$$$) {	587	sub _attach_cb($$$$) {
384	my ($registry, $event, $prio, $cb) = @_;	588	my ($registry, $event, $prio, $cb) = @_;
385		589
386	use sort 'stable';	590	use sort 'stable';
387		591
…		…
421	$registry = $CB_TYPE[$object_type] ||= [];	625	$registry = $CB_TYPE[$object_type] ||= [];
422		626
423	} elsif ($type eq "subtype") {	627	} elsif ($type eq "subtype") {
424	defined $object_type or Carp::croak "subtype specified without type";	628	defined $object_type or Carp::croak "subtype specified without type";
425	my $object_subtype = shift @arg;	629	my $object_subtype = shift @arg;
426	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] ||= [];	630	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] ||= [];
427		631
428	} elsif ($type eq "package") {	632	} elsif ($type eq "package") {
429	my $pkg = shift @arg;	633	my $pkg = shift @arg;
430		634
431	while (my ($name, $id) = each %cb_id) {	635	while (my ($name, $id) = each %cb_id) {
…		…
472	if (ref $_[0]) {	676	if (ref $_[0]) {
473	_object_attach @_;	677	_object_attach @_;
474	} else {	678	} else {
475	_attach shift->_attach_registry, @_;	679	_attach shift->_attach_registry, @_;
476	}	680	}
		681	_recalc_want;
477	};	682	};
478		683
479	# all those should be optimised	684	# all those should be optimised
480	sub cf::attachable::detach {	685	sub cf::attachable::detach {
481	my ($obj, $name) = @_;	686	my ($obj, $name) = @_;
…		…
484	delete $obj->{_attachment}{$name};	689	delete $obj->{_attachment}{$name};
485	reattach ($obj);	690	reattach ($obj);
486	} else {	691	} else {
487	Carp::croak "cannot, currently, detach class attachments";	692	Carp::croak "cannot, currently, detach class attachments";
488	}	693	}
		694	_recalc_want;
489	};	695	};
490		696
491	sub cf::attachable::attached {	697	sub cf::attachable::attached {
492	my ($obj, $name) = @_;	698	my ($obj, $name) = @_;
493		699
…		…
558	# object support	764	# object support
559		765
560	sub reattach {	766	sub reattach {
561	# basically do the same as instantiate, without calling instantiate	767	# basically do the same as instantiate, without calling instantiate
562	my ($obj) = @_;	768	my ($obj) = @_;
		769
		770	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
563		771
564	my $registry = $obj->registry;	772	my $registry = $obj->registry;
565		773
566	@$registry = ();	774	@$registry = ();
567		775
…		…
614	$filename, length $$rdata, scalar @$objs;	822	$filename, length $$rdata, scalar @$objs;
615		823
616	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {	824	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
617	chmod SAVE_MODE, $fh;	825	chmod SAVE_MODE, $fh;
618	aio_write $fh, 0, (length $$rdata), $$rdata, 0;	826	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
619	aio_fsync $fh;	827	aio_fsync $fh if $cf::USE_FSYNC;
620	close $fh;	828	close $fh;
621		829
622	if (@$objs) {	830	if (@$objs) {
623	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {	831	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
624	chmod SAVE_MODE, $fh;	832	chmod SAVE_MODE, $fh;
625	my $data = Storable::nfreeze { version => 1, objs => $objs };	833	my $data = Storable::nfreeze { version => 1, objs => $objs };
626	aio_write $fh, 0, (length $data), $data, 0;	834	aio_write $fh, 0, (length $data), $data, 0;
627	aio_fsync $fh;	835	aio_fsync $fh if $cf::USE_FSYNC;
628	close $fh;	836	close $fh;
629	aio_rename "$filename.pst~", "$filename.pst";	837	aio_rename "$filename.pst~", "$filename.pst";
630	}	838	}
631	} else {	839	} else {
632	aio_unlink "$filename.pst";	840	aio_unlink "$filename.pst";
…		…
660	or return;	868	or return;
661		869
662	unless (aio_stat "$filename.pst") {	870	unless (aio_stat "$filename.pst") {
663	(aio_load "$filename.pst", $av) >= 0	871	(aio_load "$filename.pst", $av) >= 0
664	or return;	872	or return;
665	$av = eval { (Storable::thaw <$av>)->{objs} };	873	$av = eval { (Storable::thaw $av)->{objs} };
666	}	874	}
667		875
		876	warn sprintf "loading %s (%d)\n",
		877	$filename, length $data, scalar @{$av || []};#d#
668	return ($data, $av);	878	return ($data, $av);
669	}	879	}
670		880
671	#############################################################################	881	#############################################################################
672	# command handling &c	882	# command handling &c
…		…
697	=cut	907	=cut
698		908
699	sub register_extcmd {	909	sub register_extcmd {
700	my ($name, $cb) = @_;	910	my ($name, $cb) = @_;
701		911
702	my $caller = caller;
703	#warn "registering extcmd '$name' to '$caller'";
704
705	$EXTCMD{$name} = [$cb, $caller];	912	$EXTCMD{$name} = $cb;
706	}	913	}
707		914
708	cf::player->attach (	915	cf::player->attach (
709	on_command => sub {	916	on_command => sub {
710	my ($pl, $name, $params) = @_;	917	my ($pl, $name, $params) = @_;
…		…
723		930
724	my $msg = eval { from_json $buf };	931	my $msg = eval { from_json $buf };
725		932
726	if (ref $msg) {	933	if (ref $msg) {
727	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	934	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
728	if (my %reply = $cb->[0]->($pl, $msg)) {	935	if (my %reply = $cb->($pl, $msg)) {
729	$pl->ext_reply ($msg->{msgid}, %reply);	936	$pl->ext_reply ($msg->{msgid}, %reply);
730	}	937	}
731	}	938	}
732	} else {	939	} else {
733	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	940	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
735		942
736	cf::override;	943	cf::override;
737	},	944	},
738	);	945	);
739		946
740	sub register {
741	my ($base, $pkg) = @_;
742
743	#TODO
744	}
745
746	sub load_extension {	947	sub load_extension {
747	my ($path) = @_;	948	my ($path) = @_;
748		949
749	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	950	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
750	my $base = $1;	951	my $base = $1;
751	my $pkg = $1;	952	my $pkg = $1;
752	$pkg =~ s/[^[:word:]]/_/g;	953	$pkg =~ s/[^[:word:]]/_/g;
753	$pkg = "ext::$pkg";	954	$pkg = "ext::$pkg";
754		955
755	warn "loading '$path' into '$pkg'\n";	956	warn "... loading '$path' into '$pkg'\n";
756		957
757	open my $fh, "<:utf8", $path	958	open my $fh, "<:utf8", $path
758	or die "$path: $!";	959	or die "$path: $!";
759		960
760	my $source =	961	my $source =
761	"package $pkg; use strict; use utf8;\n"	962	"package $pkg; use strict; use utf8;\n"
762	. "#line 1 \"$path\"\n{\n"	963	. "#line 1 \"$path\"\n{\n"
763	. (do { local $/; <$fh> })	964	. (do { local $/; <$fh> })
764	. "\n};\n1";	965	. "\n};\n1";
765		966
766	eval $source	967	unless (eval $source) {
767	or die $@ ? "$path: $@\n"	968	my $msg = $@ ? "$path: $@\n"
768	: "extension disabled.\n";	969	: "extension disabled.\n";
769		970	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
770	push @exts, $pkg;	971	warn $@;
771	$ext_pkg{$base} = $pkg;	972	warn "mandatory extension failed to load, exiting.\n";
772		973	exit 1;
773	# no strict 'refs';	974	}
774	# @{"$pkg\::ISA"} = ext::;	975	die $@;
775
776	register $base, $pkg;
777	}
778
779	sub unload_extension {
780	my ($pkg) = @_;
781
782	warn "removing extension $pkg\n";
783
784	# remove hooks
785	#TODO
786	# for my $idx (0 .. $#PLUGIN_EVENT) {
787	# delete $hook[$idx]{$pkg};
788	# }	976	}
789		977
790	# remove commands	978	push @EXTS, $pkg;
791	for my $name (keys %COMMAND) {
792	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
793
794	if (@cb) {
795	$COMMAND{$name} = \@cb;
796	} else {
797	delete $COMMAND{$name};
798	}
799	}
800
801	# remove extcmds
802	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
803	delete $EXTCMD{$name};
804	}
805
806	if (my $cb = $pkg->can ("unload")) {
807	eval {
808	$cb->($pkg);
809	1
810	} or warn "$pkg unloaded, but with errors: $@";
811	}
812
813	Symbol::delete_package $pkg;
814	}	979	}
815		980
816	sub load_extensions {	981	sub load_extensions {
817	for my $ext (<$LIBDIR/*.ext>) {	982	for my $ext (<$LIBDIR/*.ext>) {
818	next unless -r $ext;	983	next unless -r $ext;
…		…
822	} or warn "$ext not loaded: $@";	987	} or warn "$ext not loaded: $@";
823	}	988	}
824	}	989	}
825		990
826	#############################################################################	991	#############################################################################
827	# load/save/clean perl data associated with a map
828		992
829	*cf::mapsupport::on_clean = sub {	993	=head2 CORE EXTENSIONS
		994
		995	Functions and methods that extend core crossfire objects.
		996
		997	=cut
		998
		999	package cf::player;
		1000
		1001	use Coro::AIO;
		1002
		1003	=head3 cf::player
		1004
		1005	=over 4
		1006
		1007	=item cf::player::find $login
		1008
		1009	Returns the given player object, loading it if necessary (might block).
		1010
		1011	=cut
		1012
		1013	sub playerdir($) {
		1014	"$PLAYERDIR/"
		1015	. (ref $_[0] ? $_[0]->ob->name : $_[0])
		1016	}
		1017
		1018	sub path($) {
		1019	my $login = ref $_[0] ? $_[0]->ob->name : $_[0];
		1020
		1021	(playerdir $login) . "/playerdata"
		1022	}
		1023
		1024	sub find_active($) {
		1025	$cf::PLAYER{$_[0]}
		1026	and $cf::PLAYER{$_[0]}->active
		1027	and $cf::PLAYER{$_[0]}
		1028	}
		1029
		1030	sub exists($) {
		1031	my ($login) = @_;
		1032
		1033	$cf::PLAYER{$login}
		1034	or cf::sync_job { !aio_stat path $login }
		1035	}
		1036
		1037	sub find($) {
		1038	return $cf::PLAYER{$_[0]} || do {
		1039	my $login = $_[0];
		1040
		1041	my $guard = cf::lock_acquire "user_find:$login";
		1042
		1043	$cf::PLAYER{$_[0]} || do {
		1044	# rename old playerfiles to new ones
		1045	#TODO: remove when no longer required
		1046	aio_link +(playerdir $login) . "/$login.pl.pst", (playerdir $login) . "/playerdata.pst";
		1047	aio_link +(playerdir $login) . "/$login.pl" , (playerdir $login) . "/playerdata";
		1048	aio_unlink +(playerdir $login) . "/$login.pl.pst";
		1049	aio_unlink +(playerdir $login) . "/$login.pl";
		1050
		1051	my $pl = load_pl path $login
		1052	or return;
		1053	$cf::PLAYER{$login} = $pl
		1054	}
		1055	}
		1056	}
		1057
		1058	sub save($) {
		1059	my ($pl) = @_;
		1060
		1061	return if $pl->{deny_save};
		1062
		1063	my $path = path $pl;
		1064	my $guard = cf::lock_acquire "user_save:$path";
		1065
		1066	return if $pl->{deny_save};
		1067
		1068	aio_mkdir playerdir $pl, 0770;
		1069	$pl->{last_save} = $cf::RUNTIME;
		1070
		1071	$pl->save_pl ($path);
		1072	Coro::cede;
		1073	}
		1074
		1075	sub new($) {
		1076	my ($login) = @_;
		1077
		1078	my $self = create;
		1079
		1080	$self->ob->name ($login);
		1081	$self->{deny_save} = 1;
		1082
		1083	$cf::PLAYER{$login} = $self;
		1084
		1085	$self
		1086	}
		1087
		1088	=item $pl->quit_character
		1089
		1090	Nukes the player without looking back. If logged in, the connection will
		1091	be destroyed. May block for a long time.
		1092
		1093	=cut
		1094
		1095	sub quit_character {
		1096	my ($pl) = @_;
		1097
		1098	my $name = $pl->ob->name;
		1099
		1100	$pl->{deny_save} = 1;
		1101	$pl->password ("*"); # this should lock out the player until we nuked the dir
		1102
		1103	$pl->invoke (cf::EVENT_PLAYER_LOGOUT, 1) if $pl->active;
		1104	$pl->deactivate;
		1105	$pl->invoke (cf::EVENT_PLAYER_QUIT);
		1106	$pl->ns->destroy if $pl->ns;
		1107
		1108	my $path = playerdir $pl;
		1109	my $temp = "$path~$cf::RUNTIME~deleting~";
		1110	aio_rename $path, $temp;
		1111	delete $cf::PLAYER{$pl->ob->name};
		1112	$pl->destroy;
		1113
		1114	my $prefix = qr<^~\Q$name\E/>;
		1115
		1116	# nuke player maps
		1117	$cf::MAP{$_}->nuke for grep /$prefix/, keys %cf::MAP;
		1118
		1119	IO::AIO::aio_rmtree $temp;
		1120	}
		1121
		1122	=item $pl->kick
		1123
		1124	Kicks a player out of the game. This destroys the connection.
		1125
		1126	=cut
		1127
		1128	sub kick {
		1129	my ($pl, $kicker) = @_;
		1130
		1131	$pl->invoke (cf::EVENT_PLAYER_KICK, $kicker);
		1132	$pl->killer ("kicked");
		1133	$pl->ns->destroy;
		1134	}
		1135
		1136	=item cf::player::list_logins
		1137
		1138	Returns am arrayref of all valid playernames in the system, can take a
		1139	while and may block, so not sync_job-capable, ever.
		1140
		1141	=cut
		1142
		1143	sub list_logins {
		1144	my $dirs = aio_readdir $PLAYERDIR
		1145	or return [];
		1146
		1147	my @logins;
		1148
		1149	for my $login (@$dirs) {
		1150	my $fh = aio_open path $login, Fcntl::O_RDONLY, 0 or next;
		1151	aio_read $fh, 0, 512, my $buf, 0 or next;
		1152	$buf !~ /^password -------------$/m or next; # official not-valid tag
		1153
		1154	utf8::decode $login;
		1155	push @logins, $login;
		1156	}
		1157
		1158	\@logins
		1159	}
		1160
		1161	=item $player->maps
		1162
		1163	Returns an arrayref of map paths that are private for this
		1164	player. May block.
		1165
		1166	=cut
		1167
		1168	sub maps($) {
		1169	my ($pl) = @_;
		1170
		1171	$pl = ref $pl ? $pl->ob->name : $pl;
		1172
		1173	my $files = aio_readdir playerdir $pl
		1174	or return;
		1175
		1176	my @paths;
		1177
		1178	for (@$files) {
		1179	utf8::decode $_;
		1180	next if /\.(?:pl|pst)$/;
		1181	next unless /^$PATH_SEP/o;
		1182
		1183	push @paths, cf::map::normalise "~$pl/$_";
		1184	}
		1185
		1186	\@paths
		1187	}
		1188
		1189	=item $player->ext_reply ($msgid, %msg)
		1190
		1191	Sends an ext reply to the player.
		1192
		1193	=cut
		1194
		1195	sub ext_reply($$%) {
		1196	my ($self, $id, %msg) = @_;
		1197
		1198	$msg{msgid} = $id;
		1199
		1200	$self->send ("ext " . cf::to_json \%msg);
		1201	}
		1202
		1203	=item $player->ext_event ($type, %msg)
		1204
		1205	Sends an ext event to the client.
		1206
		1207	=cut
		1208
		1209	sub ext_event($$%) {
		1210	my ($self, $type, %msg) = @_;
		1211
		1212	$self->ns->ext_event ($type, %msg);
		1213	}
		1214
		1215	=head3 cf::region
		1216
		1217	=over 4
		1218
		1219	=cut
		1220
		1221	package cf::region;
		1222
		1223	=item cf::region::find_by_path $path
		1224
		1225	Tries to decuce the probable region for a map knowing only its path.
		1226
		1227	=cut
		1228
		1229	sub find_by_path($) {
		1230	my ($path) = @_;
		1231
		1232	my ($match, $specificity);
		1233
		1234	for my $region (list) {
		1235	if ($region->match && $path =~ $region->match) {
		1236	($match, $specificity) = ($region, $region->specificity)
		1237	if $region->specificity > $specificity;
		1238	}
		1239	}
		1240
		1241	$match
		1242	}
		1243
		1244	=back
		1245
		1246	=head3 cf::map
		1247
		1248	=over 4
		1249
		1250	=cut
		1251
		1252	package cf::map;
		1253
		1254	use Fcntl;
		1255	use Coro::AIO;
		1256
		1257	use overload
		1258	'""' => \&as_string,
		1259	fallback => 1;
		1260
		1261	our $MAX_RESET = 3600;
		1262	our $DEFAULT_RESET = 3000;
		1263
		1264	sub generate_random_map {
		1265	my ($self, $rmp) = @_;
		1266	# mit "rum" bekleckern, nicht
		1267	$self->_create_random_map (
		1268	$rmp->{wallstyle}, $rmp->{wall_name}, $rmp->{floorstyle}, $rmp->{monsterstyle},
		1269	$rmp->{treasurestyle}, $rmp->{layoutstyle}, $rmp->{doorstyle}, $rmp->{decorstyle},
		1270	$rmp->{origin_map}, $rmp->{final_map}, $rmp->{exitstyle}, $rmp->{this_map},
		1271	$rmp->{exit_on_final_map},
		1272	$rmp->{xsize}, $rmp->{ysize},
		1273	$rmp->{expand2x}, $rmp->{layoutoptions1}, $rmp->{layoutoptions2}, $rmp->{layoutoptions3},
		1274	$rmp->{symmetry}, $rmp->{difficulty}, $rmp->{difficulty_given}, $rmp->{difficulty_increase},
		1275	$rmp->{dungeon_level}, $rmp->{dungeon_depth}, $rmp->{decoroptions}, $rmp->{orientation},
		1276	$rmp->{origin_y}, $rmp->{origin_x}, $rmp->{random_seed}, $rmp->{total_map_hp},
		1277	$rmp->{map_layout_style}, $rmp->{treasureoptions}, $rmp->{symmetry_used},
		1278	(cf::region::find $rmp->{region}), $rmp->{custom}
		1279	)
		1280	}
		1281
		1282	=item cf::map->register ($regex, $prio)
		1283
		1284	Register a handler for the map path matching the given regex at the
		1285	givne priority (higher is better, built-in handlers have priority 0, the
		1286	default).
		1287
		1288	=cut
		1289
		1290	sub register {
		1291	my (undef, $regex, $prio) = @_;
		1292	my $pkg = caller;
		1293
		1294	no strict;
		1295	push @{"$pkg\::ISA"}, __PACKAGE__;
		1296
		1297	$EXT_MAP{$pkg} = [$prio, qr<$regex>];
		1298	}
		1299
		1300	# also paths starting with '/'
		1301	$EXT_MAP{"cf::map"} = [0, qr{^(?=/)}];
		1302
		1303	sub thawer_merge {
		1304	my ($self, $merge) = @_;
		1305
		1306	# we have to keep some variables in memory intact
		1307	local $self->{path};
		1308	local $self->{load_path};
		1309	local $self->{deny_save};
		1310	local $self->{deny_reset};
		1311
		1312	$self->SUPER::thawer_merge ($merge);
		1313	}
		1314
		1315	sub normalise {
		1316	my ($path, $base) = @_;
		1317
		1318	$path = "$path"; # make sure its a string
		1319
		1320	$path =~ s/\.map$//;
		1321
		1322	# map plan:
		1323	#
		1324	# /! non-realised random map exit (special hack!)
		1325	# {... are special paths that are not being touched
		1326	# ?xxx/... are special absolute paths
		1327	# ?random/... random maps
		1328	# /... normal maps
		1329	# ~user/... per-player map of a specific user
		1330
		1331	$path =~ s/$PATH_SEP/\//go;
		1332
		1333	# treat it as relative path if it starts with
		1334	# something that looks reasonable
		1335	if ($path =~ m{^(?:\./|\.\./|\w)}) {
		1336	$base or Carp::carp "normalise called with relative path and no base: '$path'";
		1337
		1338	$base =~ s{[^/]+/?$}{};
		1339	$path = "$base/$path";
		1340	}
		1341
		1342	for ($path) {
		1343	redo if s{//}{/};
		1344	redo if s{/\.?/}{/};
		1345	redo if s{/[^/]+/\.\./}{/};
		1346	}
		1347
		1348	$path
		1349	}
		1350
		1351	sub new_from_path {
		1352	my (undef, $path, $base) = @_;
		1353
		1354	return $path if UNIVERSAL::isa $path, "cf::map"; # already a map object
		1355
		1356	$path = normalise $path, $base;
		1357
		1358	for my $pkg (sort { $EXT_MAP{$b}[0] <=> $EXT_MAP{$a}[0] } keys %EXT_MAP) {
		1359	if ($path =~ $EXT_MAP{$pkg}[1]) {
		1360	my $self = bless cf::map::new, $pkg;
		1361	$self->{path} = $path; $self->path ($path);
		1362	$self->init; # pass $1 etc.
		1363	return $self;
		1364	}
		1365	}
		1366
		1367	Carp::carp "unable to resolve path '$path' (base '$base').";
		1368	()
		1369	}
		1370
		1371	sub init {
		1372	my ($self) = @_;
		1373
		1374	$self
		1375	}
		1376
		1377	sub as_string {
		1378	my ($self) = @_;
		1379
		1380	"$self->{path}"
		1381	}
		1382
		1383	# the displayed name, this is a one way mapping
		1384	sub visible_name {
		1385	&as_string
		1386	}
		1387
		1388	# the original (read-only) location
		1389	sub load_path {
		1390	my ($self) = @_;
		1391
		1392	"$MAPDIR/$self->{path}.map"
		1393	}
		1394
		1395	# the temporary/swap location
		1396	sub save_path {
		1397	my ($self) = @_;
		1398
		1399	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1400	"$TMPDIR/$path.map"
		1401	}
		1402
		1403	# the unique path, undef == no special unique path
		1404	sub uniq_path {
		1405	my ($self) = @_;
		1406
		1407	(my $path = $_[0]{path}) =~ s/\//$PATH_SEP/g;
		1408	"$UNIQUEDIR/$path"
		1409	}
		1410
		1411	# and all this just because we cannot iterate over
		1412	# all maps in C++...
		1413	sub change_all_map_light {
		1414	my ($change) = @_;
		1415
		1416	$_->change_map_light ($change)
		1417	for grep $_->outdoor, values %cf::MAP;
		1418	}
		1419
		1420	sub unlink_save {
		1421	my ($self) = @_;
		1422
		1423	utf8::encode (my $save = $self->save_path);
		1424	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
		1425	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink "$save.pst";
		1426	}
		1427
		1428	sub load_header_from($) {
		1429	my ($self, $path) = @_;
		1430
		1431	utf8::encode $path;
		1432	#aio_open $path, O_RDONLY, 0
		1433	# or return;
		1434
		1435	$self->_load_header ($path)
		1436	or return;
		1437
		1438	$self->{load_path} = $path;
		1439
		1440	1
		1441	}
		1442
		1443	sub load_header_orig {
		1444	my ($self) = @_;
		1445
		1446	$self->load_header_from ($self->load_path)
		1447	}
		1448
		1449	sub load_header_temp {
		1450	my ($self) = @_;
		1451
		1452	$self->load_header_from ($self->save_path)
		1453	}
		1454
		1455	sub prepare_temp {
		1456	my ($self) = @_;
		1457
		1458	$self->last_access ((delete $self->{last_access})
		1459	|| $cf::RUNTIME); #d#
		1460	# safety
		1461	$self->{instantiate_time} = $cf::RUNTIME
		1462	if $self->{instantiate_time} > $cf::RUNTIME;
		1463	}
		1464
		1465	sub prepare_orig {
		1466	my ($self) = @_;
		1467
		1468	$self->{load_original} = 1;
		1469	$self->{instantiate_time} = $cf::RUNTIME;
		1470	$self->last_access ($cf::RUNTIME);
		1471	$self->instantiate;
		1472	}
		1473
		1474	sub load_header {
		1475	my ($self) = @_;
		1476
		1477	if ($self->load_header_temp) {
		1478	$self->prepare_temp;
		1479	} else {
		1480	$self->load_header_orig
		1481	or return;
		1482	$self->prepare_orig;
		1483	}
		1484
		1485	$self->default_region (cf::region::find_by_path $self->{path})
		1486	unless $self->default_region;
		1487
		1488	1
		1489	}
		1490
		1491	sub find;
		1492	sub find {
		1493	my ($path, $origin) = @_;
		1494
		1495	$path = normalise $path, $origin && $origin->path;
		1496
		1497	cf::lock_wait "map_find:$path";
		1498
		1499	$cf::MAP{$path} || do {
		1500	my $guard = cf::lock_acquire "map_find:$path";
		1501	my $map = new_from_path cf::map $path
		1502	or return;
		1503
		1504	$map->{last_save} = $cf::RUNTIME;
		1505
		1506	$map->load_header
		1507	or return;
		1508
		1509	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)
		1510	# doing this can freeze the server in a sync job, obviously
		1511	#$cf::WAIT_FOR_TICK->wait;
		1512	$map->reset;
		1513	undef $guard;
		1514	return find $path;
		1515	}
		1516
		1517	$cf::MAP{$path} = $map
		1518	}
		1519	}
		1520
		1521	sub pre_load { }
		1522	sub post_load { }
		1523
		1524	sub load {
		1525	my ($self) = @_;
		1526
		1527	local $self->{deny_reset} = 1; # loading can take a long time
		1528
		1529	my $path = $self->{path};
		1530
		1531	{
		1532	my $guard = cf::lock_acquire "map_load:$path";
		1533
		1534	return if $self->in_memory != cf::MAP_SWAPPED;
		1535
		1536	$self->in_memory (cf::MAP_LOADING);
		1537
		1538	$self->alloc;
		1539
		1540	$self->pre_load;
		1541	Coro::cede;
		1542
		1543	$self->_load_objects ($self->{load_path}, 1)
		1544	or return;
		1545
		1546	$self->set_object_flag (cf::FLAG_OBJ_ORIGINAL, 1)
		1547	if delete $self->{load_original};
		1548
		1549	if (my $uniq = $self->uniq_path) {
		1550	utf8::encode $uniq;
		1551	if (aio_open $uniq, O_RDONLY, 0) {
		1552	$self->clear_unique_items;
		1553	$self->_load_objects ($uniq, 0);
		1554	}
		1555	}
		1556
		1557	Coro::cede;
		1558	# now do the right thing for maps
		1559	$self->link_multipart_objects;
		1560	$self->difficulty ($self->estimate_difficulty)
		1561	unless $self->difficulty;
		1562	Coro::cede;
		1563
		1564	unless ($self->{deny_activate}) {
		1565	$self->decay_objects;
		1566	$self->fix_auto_apply;
		1567	$self->update_buttons;
		1568	Coro::cede;
		1569	$self->set_darkness_map;
		1570	Coro::cede;
		1571	$self->activate;
		1572	}
		1573
		1574	$self->in_memory (cf::MAP_IN_MEMORY);
		1575	}
		1576
		1577	$self->post_load;
		1578	}
		1579
		1580	sub customise_for {
		1581	my ($self, $ob) = @_;
		1582
		1583	return find "~" . $ob->name . "/" . $self->{path}
		1584	if $self->per_player;
		1585
		1586	$self
		1587	}
		1588
		1589	# find and load all maps in the 3x3 area around a map
		1590	sub load_diag {
830	my ($map) = @_;	1591	my ($map) = @_;
831		1592
832	my $path = $map->tmpname;	1593	my @diag; # diagonal neighbours
833	defined $path or return;
834		1594
835	unlink "$path.pst";	1595	for (0 .. 3) {
836	};	1596	my $neigh = $map->tile_path ($_)
		1597	or next;
		1598	$neigh = find $neigh, $map
		1599	or next;
		1600	$neigh->load;
837		1601
838	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1602	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1603	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1604	}
839		1605
840	#############################################################################	1606	for (@diag) {
841	# load/save perl data associated with player->ob objects	1607	my $neigh = find @$_
842		1608	or next;
843	sub all_objects(@) {	1609	$neigh->load;
844	@_, map all_objects ($_->inv), @_	1610	}
845	}	1611	}
846		1612
847	# TODO: compatibility cruft, remove when no longer needed	1613	sub find_sync {
848	cf::player->attach (	1614	my ($path, $origin) = @_;
849	on_load => sub {
850	my ($pl, $path) = @_;
851		1615
852	for my $o (all_objects $pl->ob) {	1616	cf::sync_job { find $path, $origin }
853	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1617	}
854	$o->set_ob_key_value ("_perl_data");
855		1618
856	%$o = %{ Storable::thaw pack "H*", $value };	1619	sub do_load_sync {
		1620	my ($map) = @_;
		1621
		1622	cf::sync_job { $map->load };
		1623	}
		1624
		1625	our %MAP_PREFETCH;
		1626	our $MAP_PREFETCHER = undef;
		1627
		1628	sub find_async {
		1629	my ($path, $origin) = @_;
		1630
		1631	$path = normalise $path, $origin && $origin->{path};
		1632
		1633	if (my $map = $cf::MAP{$path}) {
		1634	return $map if $map->in_memory == cf::MAP_IN_MEMORY;
		1635	}
		1636
		1637	undef $MAP_PREFETCH{$path};
		1638	$MAP_PREFETCHER ||= cf::async {
		1639	while (%MAP_PREFETCH) {
		1640	for my $path (keys %MAP_PREFETCH) {
		1641	my $map = find $path
		1642	or next;
		1643	$map->load;
		1644
		1645	delete $MAP_PREFETCH{$path};
857	}	1646	}
858	}	1647	}
		1648	undef $MAP_PREFETCHER;
		1649	};
		1650	$MAP_PREFETCHER->prio (6);
		1651
		1652	()
		1653	}
		1654
		1655	sub save {
		1656	my ($self) = @_;
		1657
		1658	my $lock = cf::lock_acquire "map_data:" . $self->path;
		1659
		1660	$self->{last_save} = $cf::RUNTIME;
		1661
		1662	return unless $self->dirty;
		1663
		1664	my $save = $self->save_path; utf8::encode $save;
		1665	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1666
		1667	$self->{load_path} = $save;
		1668
		1669	return if $self->{deny_save};
		1670
		1671	local $self->{last_access} = $self->last_access;#d#
		1672
		1673	cf::async {
		1674	$_->contr->save for $self->players;
		1675	};
		1676
		1677	if ($uniq) {
		1678	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS);
		1679	$self->_save_objects ($uniq, cf::IO_UNIQUES);
		1680	} else {
		1681	$self->_save_objects ($save, cf::IO_HEADER | cf::IO_OBJECTS | cf::IO_UNIQUES);
859	},	1682	}
860	);	1683	}
861		1684
862	#############################################################################	1685	sub swap_out {
		1686	my ($self) = @_;
863		1687
864	=head2 CORE EXTENSIONS	1688	# save first because save cedes
		1689	$self->save;
865		1690
866	Functions and methods that extend core crossfire objects.	1691	my $lock = cf::lock_acquire "map_data:" . $self->path;
867		1692
868	=head3 cf::player	1693	return if $self->players;
		1694	return if $self->in_memory != cf::MAP_IN_MEMORY;
		1695	return if $self->{deny_save};
		1696
		1697	$self->clear;
		1698	$self->in_memory (cf::MAP_SWAPPED);
		1699	}
		1700
		1701	sub reset_at {
		1702	my ($self) = @_;
		1703
		1704	# TODO: safety, remove and allow resettable per-player maps
		1705	return 1e99 if $self->isa ("ext::map_per_player");#d#
		1706	return 1e99 if $self->{deny_reset};
		1707
		1708	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
		1709	my $to = List::Util::min $MAX_RESET, $self->reset_timeout || $DEFAULT_RESET;
		1710
		1711	$time + $to
		1712	}
		1713
		1714	sub should_reset {
		1715	my ($self) = @_;
		1716
		1717	$self->reset_at <= $cf::RUNTIME
		1718	}
		1719
		1720	sub reset {
		1721	my ($self) = @_;
		1722
		1723	my $lock = cf::lock_acquire "map_data:$self->{path}";
		1724
		1725	return if $self->players;
		1726	return if $self->isa ("ext::map_per_player");#d#
		1727
		1728	warn "resetting map ", $self->path;#d#
		1729
		1730	$self->in_memory (cf::MAP_SWAPPED);
		1731
		1732	# need to save uniques path
		1733	unless ($self->{deny_save}) {
		1734	my $uniq = $self->uniq_path; utf8::encode $uniq;
		1735
		1736	$self->_save_objects ($uniq, cf::IO_UNIQUES)
		1737	if $uniq;
		1738	}
		1739
		1740	delete $cf::MAP{$self->path};
		1741
		1742	$self->clear;
		1743
		1744	$_->clear_links_to ($self) for values %cf::MAP;
		1745
		1746	$self->unlink_save;
		1747	$self->destroy;
		1748	}
		1749
		1750	my $nuke_counter = "aaaa";
		1751
		1752	sub nuke {
		1753	my ($self) = @_;
		1754
		1755	delete $cf::MAP{$self->path};
		1756
		1757	$self->unlink_save;
		1758
		1759	bless $self, "cf::map";
		1760	delete $self->{deny_reset};
		1761	$self->{deny_save} = 1;
		1762	$self->reset_timeout (1);
		1763	$self->path ($self->{path} = "{nuke}/" . ($nuke_counter++));
		1764
		1765	$cf::MAP{$self->path} = $self;
		1766
		1767	$self->reset; # polite request, might not happen
		1768	}
		1769
		1770	=item cf::map::unique_maps
		1771
		1772	Returns an arrayref of paths of all shared maps that have
		1773	instantiated unique items. May block.
		1774
		1775	=cut
		1776
		1777	sub unique_maps() {
		1778	my $files = aio_readdir $UNIQUEDIR
		1779	or return;
		1780
		1781	my @paths;
		1782
		1783	for (@$files) {
		1784	utf8::decode $_;
		1785	next if /\.pst$/;
		1786	next unless /^$PATH_SEP/o;
		1787
		1788	push @paths, cf::map::normalise $_;
		1789	}
		1790
		1791	\@paths
		1792	}
		1793
		1794	package cf;
		1795
		1796	=back
		1797
		1798	=head3 cf::object
		1799
		1800	=cut
		1801
		1802	package cf::object;
869		1803
870	=over 4	1804	=over 4
871		1805
872	=item cf::player::exists $login	1806	=item $ob->inv_recursive
873		1807
874	Returns true when the given account exists.	1808	Returns the inventory of the object _and_ their inventories, recursively.
875		1809
876	=cut	1810	=cut
877		1811
878	sub cf::player::exists($) {	1812	sub inv_recursive_;
879	cf::player::find $_[0]	1813	sub inv_recursive_ {
880	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1814	map { $_, inv_recursive_ $_->inv } @_
881	}	1815	}
882		1816
883	=item $player->ext_reply ($msgid, $msgtype, %msg)	1817	sub inv_recursive {
884		1818	inv_recursive_ inv $_[0]
885	Sends an ext reply to the player.
886
887	=cut
888
889	sub cf::player::ext_reply($$$%) {
890	my ($self, $id, %msg) = @_;
891
892	$msg{msgid} = $id;
893
894	$self->send ("ext " . to_json \%msg);
895	}	1819	}
		1820
		1821	package cf;
896		1822
897	=back	1823	=back
898		1824
899	=head3 cf::object::player	1825	=head3 cf::object::player
900		1826
…		…
938	(ref $cf::CFG{"may_$access"}	1864	(ref $cf::CFG{"may_$access"}
939	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1865	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
940	: $cf::CFG{"may_$access"})	1866	: $cf::CFG{"may_$access"})
941	}	1867	}
942		1868
		1869	=item $player_object->enter_link
		1870
		1871	Freezes the player and moves him/her to a special map (C<{link}>).
		1872
		1873	The player should be reasonably safe there for short amounts of time. You
		1874	I<MUST> call C<leave_link> as soon as possible, though.
		1875
		1876	Will never block.
		1877
		1878	=item $player_object->leave_link ($map, $x, $y)
		1879
		1880	Moves the player out of the special C<{link}> map onto the specified
		1881	map. If the map is not valid (or omitted), the player will be moved back
		1882	to the location he/she was before the call to C<enter_link>, or, if that
		1883	fails, to the emergency map position.
		1884
		1885	Might block.
		1886
		1887	=cut
		1888
		1889	sub link_map {
		1890	unless ($LINK_MAP) {
		1891	$LINK_MAP = cf::map::find "{link}"
		1892	or cf::cleanup "FATAL: unable to provide {link} map, exiting.";
		1893	$LINK_MAP->load;
		1894	}
		1895
		1896	$LINK_MAP
		1897	}
		1898
		1899	sub cf::object::player::enter_link {
		1900	my ($self) = @_;
		1901
		1902	$self->deactivate_recursive;
		1903
		1904	return if UNIVERSAL::isa $self->map, "ext::map_link";
		1905
		1906	$self->{_link_pos} ||= [$self->map->{path}, $self->x, $self->y]
		1907	if $self->map && $self->map->{path} ne "{link}";
		1908
		1909	$self->enter_map ($LINK_MAP || link_map, 10, 10);
		1910	}
		1911
		1912	sub cf::object::player::leave_link {
		1913	my ($self, $map, $x, $y) = @_;
		1914
		1915	return unless $self->contr->active;
		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	=item $player_object->goto ($path, $x, $y[, $check->($map)])
		1949
		1950	Moves the player to the given map-path and coordinates by first freezing
		1951	her, loading and preparing them map, calling the provided $check callback
		1952	that has to return the map if sucecssful, and then unfreezes the player on
		1953	the new (success) or old (failed) map position.
		1954
		1955	=cut
		1956
		1957	our $GOTOGEN;
		1958
		1959	sub cf::object::player::goto {
		1960	my ($self, $path, $x, $y, $check) = @_;
		1961
		1962	# do generation counting so two concurrent goto's will be executed in-order
		1963	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
		1964
		1965	$self->enter_link;
		1966
		1967	(async {
		1968	my $map = eval {
		1969	my $map = cf::map::find $path;
		1970
		1971	if ($map) {
		1972	$map = $map->customise_for ($self);
		1973	$map = $check->($map) if $check && $map;
		1974	} else {
		1975	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1976	}
		1977
		1978	$map
		1979	};
		1980
		1981	if ($@) {
		1982	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE | cf::NDI_RED);
		1983	LOG llevError | logBacktrace, Carp::longmess $@;
		1984	}
		1985
		1986	if ($gen == $self->{_goto_generation}) {
		1987	delete $self->{_goto_generation};
		1988	$self->leave_link ($map, $x, $y);
		1989	}
		1990	})->prio (1);
		1991	}
		1992
		1993	=item $player_object->enter_exit ($exit_object)
		1994
		1995	=cut
		1996
		1997	sub parse_random_map_params {
		1998	my ($spec) = @_;
		1999
		2000	my $rmp = { # defaults
		2001	xsize => (cf::rndm 15, 40),
		2002	ysize => (cf::rndm 15, 40),
		2003	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2004	#layout => string,
		2005	};
		2006
		2007	for (split /\n/, $spec) {
		2008	my ($k, $v) = split /\s+/, $_, 2;
		2009
		2010	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2011	}
		2012
		2013	$rmp
		2014	}
		2015
		2016	sub prepare_random_map {
		2017	my ($exit) = @_;
		2018
		2019	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2020
		2021	# all this does is basically replace the /! path by
		2022	# a new random map path (?random/...) with a seed
		2023	# that depends on the exit object
		2024
		2025	my $rmp = parse_random_map_params $exit->msg;
		2026
		2027	if ($exit->map) {
		2028	$rmp->{region} = $exit->region->name;
		2029	$rmp->{origin_map} = $exit->map->path;
		2030	$rmp->{origin_x} = $exit->x;
		2031	$rmp->{origin_y} = $exit->y;
		2032	}
		2033
		2034	$rmp->{random_seed} ||= $exit->random_seed;
		2035
		2036	my $data = cf::to_json $rmp;
		2037	my $md5 = Digest::MD5::md5_hex $data;
		2038	my $meta = "$RANDOMDIR/$md5.meta";
		2039
		2040	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2041	aio_write $fh, 0, (length $data), $data, 0;
		2042	undef $fh;
		2043	aio_rename "$meta~", $meta;
		2044
		2045	$exit->slaying ("?random/$md5");
		2046	$exit->msg (undef);
		2047	}
		2048	}
		2049
		2050	sub cf::object::player::enter_exit {
		2051	my ($self, $exit) = @_;
		2052
		2053	return unless $self->type == cf::PLAYER;
		2054
		2055	if ($exit->slaying eq "/!") {
		2056	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2057	# the problem is that $exit might not survive long enough
		2058	# so it needs to be done right now, right here
		2059	cf::sync_job { prepare_random_map $exit };
		2060	}
		2061
		2062	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2063	my $hp = $exit->stats->hp;
		2064	my $sp = $exit->stats->sp;
		2065
		2066	$self->enter_link;
		2067
		2068	(async {
		2069	$self->deactivate_recursive; # just to be sure
		2070	unless (eval {
		2071	$self->goto ($slaying, $hp, $sp);
		2072
		2073	1;
		2074	}) {
		2075	$self->message ("Something went wrong deep within the crossfire server. "
		2076	. "I'll try to bring you back to the map you were before. "
		2077	. "Please report this to the dungeon master!",
		2078	cf::NDI_UNIQUE | cf::NDI_RED);
		2079
		2080	warn "ERROR in enter_exit: $@";
		2081	$self->leave_link;
		2082	}
		2083	})->prio (1);
		2084	}
		2085
943	=head3 cf::client	2086	=head3 cf::client
944		2087
945	=over 4	2088	=over 4
946		2089
947	=item $client->send_drawinfo ($text, $flags)	2090	=item $client->send_drawinfo ($text, $flags)
…		…
953		2096
954	sub cf::client::send_drawinfo {	2097	sub cf::client::send_drawinfo {
955	my ($self, $text, $flags) = @_;	2098	my ($self, $text, $flags) = @_;
956		2099
957	utf8::encode $text;	2100	utf8::encode $text;
958	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2101	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
959	}	2102	}
960		2103
		2104	=item $client->ext_event ($type, %msg)
		2105
		2106	Sends an exti event to the client.
		2107
		2108	=cut
		2109
		2110	sub cf::client::ext_event($$%) {
		2111	my ($self, $type, %msg) = @_;
		2112
		2113	$msg{msgtype} = "event_$type";
		2114	$self->send_packet ("ext " . cf::to_json \%msg);
		2115	}
961		2116
962	=item $success = $client->query ($flags, "text", \&cb)	2117	=item $success = $client->query ($flags, "text", \&cb)
963		2118
964	Queues a query to the client, calling the given callback with	2119	Queues a query to the client, calling the given callback with
965	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2120	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
…		…
990	on_reply => sub {	2145	on_reply => sub {
991	my ($ns, $msg) = @_;	2146	my ($ns, $msg) = @_;
992		2147
993	# this weird shuffling is so that direct followup queries	2148	# this weird shuffling is so that direct followup queries
994	# get handled first	2149	# get handled first
995	my $queue = delete $ns->{query_queue};	2150	my $queue = delete $ns->{query_queue}
		2151	or return; # be conservative, not sure how that can happen, but we saw a crash here
996		2152
997	(shift @$queue)->[1]->($msg);	2153	(shift @$queue)->[1]->($msg);
		2154	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
998		2155
999	push @{ $ns->{query_queue} }, @$queue;	2156	push @{ $ns->{query_queue} }, @$queue;
1000		2157
1001	if (@{ $ns->{query_queue} } == @$queue) {	2158	if (@{ $ns->{query_queue} } == @$queue) {
1002	if (@$queue) {	2159	if (@$queue) {
…		…
1006	}	2163	}
1007	}	2164	}
1008	},	2165	},
1009	);	2166	);
1010		2167
1011	=item $client->coro (\&cb)	2168	=item $client->async (\&cb)
1012		2169
1013	Create a new coroutine, running the specified callback. The coroutine will	2170	Create a new coroutine, running the specified callback. The coroutine will
1014	be automatically cancelled when the client gets destroyed (e.g. on logout,	2171	be automatically cancelled when the client gets destroyed (e.g. on logout,
1015	or loss of connection).	2172	or loss of connection).
1016		2173
1017	=cut	2174	=cut
1018		2175
1019	sub cf::client::coro {	2176	sub cf::client::async {
1020	my ($self, $cb) = @_;	2177	my ($self, $cb) = @_;
1021		2178
1022	my $coro; $coro = async {	2179	my $coro = &Coro::async ($cb);
1023	eval {
1024	$cb->();
1025	};
1026	warn $@ if $@;
1027	};
1028		2180
1029	$coro->on_destroy (sub {	2181	$coro->on_destroy (sub {
1030	delete $self->{_coro}{$coro+0};	2182	delete $self->{_coro}{$coro+0};
1031	});	2183	});
1032		2184
…		…
1065		2217
1066	# here we export the classes and methods available to script code	2218	# here we export the classes and methods available to script code
1067		2219
1068	=pod	2220	=pod
1069		2221
1070	The following fucntions and emthods are available within a safe environment:	2222	The following functions and methods are available within a safe environment:
1071		2223
1072	cf::object contr pay_amount pay_player map	2224	cf::object contr pay_amount pay_player map
1073	cf::object::player player	2225	cf::object::player player
1074	cf::player peaceful	2226	cf::player peaceful
1075	cf::map trigger	2227	cf::map trigger
…		…
1160	#############################################################################	2312	#############################################################################
1161		2313
1162	=head2 EXTENSION DATABASE SUPPORT	2314	=head2 EXTENSION DATABASE SUPPORT
1163		2315
1164	Crossfire maintains a very simple database for extension use. It can	2316	Crossfire maintains a very simple database for extension use. It can
1165	currently store anything that can be serialised using Storable, which	2317	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
1166	excludes objects.	2318	convert to/from binary).
1167		2319
1168	The parameter C<$family> should best start with the name of the extension	2320	The parameter C<$family> should best start with the name of the extension
1169	using it, it should be unique.	2321	using it, it should be unique.
1170		2322
1171	=over 4	2323	=over 4
1172		2324
1173	=item $hashref = cf::db_get $family
1174
1175	Return a hashref for use by the extension C<$family>, which can be
1176	modified. After modifications, you have to call C<cf::db_dirty> or
1177	C<cf::db_sync>.
1178
1179	=item $value = cf::db_get $family => $key	2325	=item $value = cf::db_get $family => $key
1180		2326
1181	Returns a single value from the database	2327	Returns a single value from the database.
1182
1183	=item cf::db_put $family => $hashref
1184
1185	Stores the given family hashref into the database. Updates are delayed, if
1186	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1187		2328
1188	=item cf::db_put $family => $key => $value	2329	=item cf::db_put $family => $key => $value
1189		2330
1190	Stores the given C<$value> in the family hash. Updates are delayed, if you	2331	Stores the given C<$value> in the family.
1191	want the data to be synced to disk immediately, use C<cf::db_sync>.
1192
1193	=item cf::db_dirty
1194
1195	Marks the database as dirty, to be updated at a later time.
1196
1197	=item cf::db_sync
1198
1199	Immediately write the database to disk I<if it is dirty>.
1200		2332
1201	=cut	2333	=cut
1202		2334
1203	our $DB;	2335	our $DB;
1204		2336
1205	{	2337	sub db_init {
1206	my $path = cf::localdir . "/database.pst";	2338	unless ($DB) {
		2339	$DB = BDB::db_create $DB_ENV;
1207		2340
1208	sub db_load() {	2341	cf::sync_job {
1209	warn "loading database $path\n";#d# remove later	2342	eval {
1210	$DB = stat $path ? Storable::retrieve $path : { };	2343	$DB->set_flags (BDB::CHKSUM);
1211	}
1212		2344
1213	my $pid;	2345	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1214		2346	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1215	sub db_save() {	2347	cf::cleanup "db_open(db): $!" if $!;
1216	warn "saving database $path\n";#d# remove later	2348	};
1217	waitpid $pid, 0 if $pid;	2349	cf::cleanup "db_open(db): $@" if $@;
1218	if (0 == ($pid = fork)) {
1219	$DB->{_meta}{version} = 1;
1220	Storable::nstore $DB, "$path~";
1221	rename "$path~", $path;
1222	cf::_exit 0 if defined $pid;
1223	}	2350	};
1224	}
1225
1226	my $dirty;
1227
1228	sub db_sync() {
1229	db_save if $dirty;
1230	undef $dirty;
1231	}
1232
1233	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1234	db_sync;
1235	});	2351	}
		2352	}
1236		2353
1237	sub db_dirty() {
1238	$dirty = 1;
1239	$idle->start;
1240	}
1241
1242	sub db_get($;$) {	2354	sub db_get($$) {
1243	@_ >= 2	2355	my $key = "$_[0]/$_[1]";
1244	? $DB->{$_[0]}{$_[1]}
1245	: ($DB->{$_[0]} ||= { })
1246	}
1247		2356
		2357	cf::sync_job {
		2358	BDB::db_get $DB, undef, $key, my $data;
		2359
		2360	$! ? ()
		2361	: $data
		2362	}
		2363	}
		2364
1248	sub db_put($$;$) {	2365	sub db_put($$$) {
1249	if (@_ >= 3) {	2366	BDB::dbreq_pri 4;
1250	$DB->{$_[0]}{$_[1]} = $_[2];	2367	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1251	} else {	2368	}
1252	$DB->{$_[0]} = $_[1];
1253	}
1254	db_dirty;
1255	}
1256		2369
1257	cf::global->attach (	2370	=item cf::cache $id => [$paths...], $processversion => $process
1258	prio => 10000,	2371
1259	on_cleanup => sub {	2372	Generic caching function that returns the value of the resource $id,
1260	db_sync;	2373	caching and regenerating as required.
		2374
		2375	This function can block.
		2376
		2377	=cut
		2378
		2379	sub cache {
		2380	my ($id, $src, $processversion, $process) = @_;
		2381
		2382	my $meta =
		2383	join "\x00",
		2384	$processversion,
		2385	map {
		2386	aio_stat $_
		2387	and Carp::croak "$_: $!";
		2388
		2389	($_, (stat _)[7,9])
		2390	} @$src;
		2391
		2392	my $dbmeta = db_get cache => "$id/meta";
		2393	if ($dbmeta ne $meta) {
		2394	# changed, we may need to process
		2395
		2396	my @data;
		2397	my $md5;
		2398
		2399	for (0 .. $#$src) {
		2400	0 <= aio_load $src->[$_], $data[$_]
		2401	or Carp::croak "$src->[$_]: $!";
1261	},	2402	}
1262	);	2403
		2404	# if processing is expensive, check
		2405	# checksum first
		2406	if (1) {
		2407	$md5 =
		2408	join "\x00",
		2409	$processversion,
		2410	map {
		2411	Coro::cede;
		2412	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2413	} 0.. $#$src;
		2414
		2415
		2416	my $dbmd5 = db_get cache => "$id/md5";
		2417	if ($dbmd5 eq $md5) {
		2418	db_put cache => "$id/meta", $meta;
		2419
		2420	return db_get cache => "$id/data";
		2421	}
		2422	}
		2423
		2424	my $t1 = Time::HiRes::time;
		2425	my $data = $process->(\@data);
		2426	my $t2 = Time::HiRes::time;
		2427
		2428	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2429
		2430	db_put cache => "$id/data", $data;
		2431	db_put cache => "$id/md5" , $md5;
		2432	db_put cache => "$id/meta", $meta;
		2433
		2434	return $data;
		2435	}
		2436
		2437	db_get cache => "$id/data"
		2438	}
		2439
		2440	=item fork_call { }, $args
		2441
		2442	Executes the given code block with the given arguments in a seperate
		2443	process, returning the results. Everything must be serialisable with
		2444	Coro::Storable. May, of course, block. Note that the executed sub may
		2445	never block itself or use any form of Event handling.
		2446
		2447	=cut
		2448
		2449	sub fork_call(&@) {
		2450	my ($cb, @args) = @_;
		2451
		2452	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2453	# or die "socketpair: $!";
		2454	pipe my $fh1, my $fh2
		2455	or die "pipe: $!";
		2456
		2457	if (my $pid = fork) {
		2458	close $fh2;
		2459
		2460	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2461	$res = Coro::Storable::thaw $res;
		2462
		2463	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2464
		2465	die $$res unless "ARRAY" eq ref $res;
		2466
		2467	return wantarray ? @$res : $res->[-1];
		2468	} else {
		2469	reset_signals;
		2470	local $SIG{__WARN__};
		2471	local $SIG{__DIE__};
		2472	eval {
		2473	close $fh1;
		2474
		2475	my @res = eval { $cb->(@args) };
		2476	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2477	};
		2478
		2479	warn $@ if $@;
		2480	_exit 0;
		2481	}
1263	}	2482	}
1264		2483
1265	#############################################################################	2484	#############################################################################
1266	# the server's main()	2485	# the server's init and main functions
		2486
		2487	sub load_facedata($) {
		2488	my ($path) = @_;
		2489
		2490	warn "loading facedata from $path\n";
		2491
		2492	my $facedata;
		2493	0 < aio_load $path, $facedata
		2494	or die "$path: $!";
		2495
		2496	$facedata = Coro::Storable::thaw $facedata;
		2497
		2498	$facedata->{version} == 2
		2499	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2500
		2501	{
		2502	my $faces = $facedata->{faceinfo};
		2503
		2504	while (my ($face, $info) = each %$faces) {
		2505	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2506	warn "$face $info->{magicmap}\n" if $face =~ /obol/;#d#
		2507	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2508	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2509	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2510	Coro::cede;
		2511	}
		2512
		2513	while (my ($face, $info) = each %$faces) {
		2514	next unless $info->{smooth};
		2515	my $idx = cf::face::find $face
		2516	or next;
		2517	if (my $smooth = cf::face::find $info->{smooth}) {
		2518	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2519	} else {
		2520	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2521	}
		2522	Coro::cede;
		2523	}
		2524	}
		2525
		2526	{
		2527	my $anims = $facedata->{animinfo};
		2528
		2529	while (my ($anim, $info) = each %$anims) {
		2530	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2531	Coro::cede;
		2532	}
		2533
		2534	cf::anim::invalidate_all; # d'oh
		2535	}
		2536
		2537	1
		2538	}
		2539
		2540	sub reload_regions {
		2541	load_resource_file "$MAPDIR/regions"
		2542	or die "unable to load regions file\n";
		2543	}
		2544
		2545	sub reload_facedata {
		2546	load_facedata "$DATADIR/facedata"
		2547	or die "unable to load facedata\n";
		2548	}
		2549
		2550	sub reload_archetypes {
		2551	load_resource_file "$DATADIR/archetypes"
		2552	or die "unable to load archetypes\n";
		2553	}
		2554
		2555	sub reload_treasures {
		2556	load_resource_file "$DATADIR/treasures"
		2557	or die "unable to load treasurelists\n";
		2558	}
		2559
		2560	sub reload_resources {
		2561	warn "reloading resource files...\n";
		2562
		2563	reload_regions;
		2564	reload_facedata;
		2565	reload_archetypes;
		2566	reload_treasures;
		2567
		2568	warn "finished reloading resource files\n";
		2569	}
		2570
		2571	sub init {
		2572	reload_resources;
		2573	}
1267		2574
1268	sub cfg_load {	2575	sub cfg_load {
1269	open my $fh, "<:utf8", cf::confdir . "/config"	2576	open my $fh, "<:utf8", "$CONFDIR/config"
1270	or return;	2577	or return;
1271		2578
1272	local $/;	2579	local $/;
1273	*CFG = YAML::Syck::Load <$fh>;	2580	*CFG = YAML::Syck::Load <$fh>;
		2581
		2582	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2583
		2584	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2585	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2586
		2587	if (exists $CFG{mlockall}) {
		2588	eval {
		2589	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2590	and die "WARNING: m(un)lockall failed: $!\n";
		2591	};
		2592	warn $@ if $@;
		2593	}
1274	}	2594	}
1275		2595
1276	sub main {	2596	sub main {
		2597	# we must not ever block the main coroutine
		2598	local $Coro::idle = sub {
		2599	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2600	(async {
		2601	Event::one_event;
		2602	})->prio (Coro::PRIO_MAX);
		2603	};
		2604
1277	cfg_load;	2605	cfg_load;
1278	db_load;	2606	db_init;
1279	load_extensions;	2607	load_extensions;
		2608
		2609	$TICK_WATCHER->start;
1280	Event::loop;	2610	Event::loop;
1281	}	2611	}
1282		2612
1283	#############################################################################	2613	#############################################################################
1284	# initialisation	2614	# initialisation and cleanup
1285		2615
1286	sub perl_reload() {	2616	# install some emergency cleanup handlers
		2617	BEGIN {
		2618	for my $signal (qw(INT HUP TERM)) {
		2619	Event->signal (
		2620	reentrant => 0,
		2621	data => WF_AUTOCANCEL,
		2622	signal => $signal,
		2623	prio => 0,
		2624	cb => sub {
		2625	cf::cleanup "SIG$signal";
		2626	},
		2627	);
		2628	}
		2629	}
		2630
		2631	sub emergency_save() {
		2632	my $freeze_guard = cf::freeze_mainloop;
		2633
		2634	warn "enter emergency perl save\n";
		2635
		2636	cf::sync_job {
		2637	# use a peculiar iteration method to avoid tripping on perl
		2638	# refcount bugs in for. also avoids problems with players
		2639	# and maps saved/destroyed asynchronously.
		2640	warn "begin emergency player save\n";
		2641	for my $login (keys %cf::PLAYER) {
		2642	my $pl = $cf::PLAYER{$login} or next;
		2643	$pl->valid or next;
		2644	$pl->save;
		2645	}
		2646	warn "end emergency player save\n";
		2647
		2648	warn "begin emergency map save\n";
		2649	for my $path (keys %cf::MAP) {
		2650	my $map = $cf::MAP{$path} or next;
		2651	$map->valid or next;
		2652	$map->save;
		2653	}
		2654	warn "end emergency map save\n";
		2655
		2656	warn "begin emergency database checkpoint\n";
		2657	BDB::db_env_txn_checkpoint $DB_ENV;
		2658	warn "end emergency database checkpoint\n";
		2659	};
		2660
		2661	warn "leave emergency perl save\n";
		2662	}
		2663
		2664	sub post_cleanup {
		2665	my ($make_core) = @_;
		2666
		2667	warn Carp::longmess "post_cleanup backtrace"
		2668	if $make_core;
		2669	}
		2670
		2671	sub do_reload_perl() {
1287	# can/must only be called in main	2672	# can/must only be called in main
1288	if ($Coro::current != $Coro::main) {	2673	if ($Coro::current != $Coro::main) {
1289	warn "can only reload from main coroutine\n";	2674	warn "can only reload from main coroutine";
1290	return;	2675	return;
1291	}	2676	}
1292		2677
1293	warn "reloading...";	2678	warn "reloading...";
1294		2679
1295	local $FREEZE = 1;	2680	warn "entering sync_job";
		2681
		2682	cf::sync_job {
		2683	cf::write_runtime; # external watchdog should not bark
1296	cf::emergency_save;	2684	cf::emergency_save;
		2685	cf::write_runtime; # external watchdog should not bark
1297		2686
1298	eval {	2687	warn "syncing database to disk";
		2688	BDB::db_env_txn_checkpoint $DB_ENV;
		2689
1299	# if anything goes wrong in here, we should simply crash as we already saved	2690	# if anything goes wrong in here, we should simply crash as we already saved
1300		2691
1301	# cancel all watchers	2692	warn "cancelling all WF_AUTOCANCEL watchers";
1302	for (Event::all_watchers) {	2693	for (Event::all_watchers) {
1303	$_->cancel if $_->data & WF_AUTOCANCEL;	2694	$_->cancel if $_->data & WF_AUTOCANCEL;
1304	}	2695	}
1305		2696
		2697	warn "flushing outstanding aio requests";
		2698	for (;;) {
		2699	BDB::flush;
		2700	IO::AIO::flush;
		2701	Coro::cede;
		2702	last unless IO::AIO::nreqs || BDB::nreqs;
		2703	warn "iterate...";
		2704	}
		2705
		2706	++$RELOAD;
		2707
1306	# cancel all extension coros	2708	warn "cancelling all extension coros";
1307	$_->cancel for values %EXT_CORO;	2709	$_->cancel for values %EXT_CORO;
1308	%EXT_CORO = ();	2710	%EXT_CORO = ();
1309		2711
1310	# unload all extensions	2712	warn "removing commands";
1311	for (@exts) {	2713	%COMMAND = ();
		2714
		2715	warn "removing ext commands";
		2716	%EXTCMD = ();
		2717
		2718	warn "unloading/nuking all extensions";
		2719	for my $pkg (@EXTS) {
1312	warn "unloading <$_>";	2720	warn "... unloading $pkg";
1313	unload_extension $_;	2721
		2722	if (my $cb = $pkg->can ("unload")) {
		2723	eval {
		2724	$cb->($pkg);
		2725	1
		2726	} or warn "$pkg unloaded, but with errors: $@";
1314	}	2727	}
1315		2728
		2729	warn "... nuking $pkg";
		2730	Symbol::delete_package $pkg;
		2731	}
		2732
1316	# unload all modules loaded from $LIBDIR	2733	warn "unloading all perl modules loaded from $LIBDIR";
1317	while (my ($k, $v) = each %INC) {	2734	while (my ($k, $v) = each %INC) {
1318	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2735	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1319		2736
1320	warn "removing <$k>";	2737	warn "... unloading $k";
1321	delete $INC{$k};	2738	delete $INC{$k};
1322		2739
1323	$k =~ s/\.pm$//;	2740	$k =~ s/\.pm$//;
1324	$k =~ s/\//::/g;	2741	$k =~ s/\//::/g;
1325		2742
…		…
1328	}	2745	}
1329		2746
1330	Symbol::delete_package $k;	2747	Symbol::delete_package $k;
1331	}	2748	}
1332		2749
1333	# sync database to disk
1334	cf::db_sync;
1335	IO::AIO::flush;
1336
1337	# get rid of safe::, as good as possible	2750	warn "getting rid of safe::, as good as possible";
1338	Symbol::delete_package "safe::$_"	2751	Symbol::delete_package "safe::$_"
1339	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);	2752	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1340		2753
1341	# remove register_script_function callbacks
1342	# TODO
1343
1344	# unload cf.pm "a bit"	2754	warn "unloading cf.pm \"a bit\"";
1345	delete $INC{"cf.pm"};	2755	delete $INC{"cf.pm"};
		2756	delete $INC{"cf/pod.pm"};
1346		2757
1347	# don't, removes xs symbols, too,	2758	# don't, removes xs symbols, too,
1348	# and global variables created in xs	2759	# and global variables created in xs
1349	#Symbol::delete_package __PACKAGE__;	2760	#Symbol::delete_package __PACKAGE__;
1350		2761
1351	# reload cf.pm	2762	warn "unload completed, starting to reload now";
		2763
1352	warn "reloading cf.pm";	2764	warn "reloading cf.pm";
1353	require cf;	2765	require cf;
1354	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2766	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1355		2767
1356	# load config and database again	2768	warn "loading config and database again";
1357	cf::cfg_load;	2769	cf::cfg_load;
1358	cf::db_load;
1359		2770
1360	# load extensions
1361	warn "load extensions";	2771	warn "loading extensions";
1362	cf::load_extensions;	2772	cf::load_extensions;
1363		2773
1364	# reattach attachments to objects	2774	warn "reattaching attachments to objects/players";
1365	warn "reattach";	2775	_global_reattach; # objects, sockets
1366	_global_reattach;	2776	warn "reattaching attachments to maps";
1367	};	2777	reattach $_ for values %MAP;
		2778	warn "reattaching attachments to players";
		2779	reattach $_ for values %PLAYER;
1368		2780
1369	if ($@) {	2781	warn "leaving sync_job";
		2782
		2783	1
		2784	} or do {
1370	warn $@;	2785	warn $@;
1371	warn "error while reloading, exiting.";	2786	warn "error while reloading, exiting.";
1372	exit 1;	2787	exit 1;
1373	}	2788	};
1374		2789
1375	warn "reloaded successfully";	2790	warn "reloaded";
1376	};	2791	};
1377		2792
1378	register "<global>", __PACKAGE__;	2793	our $RELOAD_WATCHER; # used only during reload
1379		2794
		2795	sub reload_perl() {
		2796	# doing reload synchronously and two reloads happen back-to-back,
		2797	# coro crashes during coro_state_free->destroy here.
		2798
		2799	$RELOAD_WATCHER ||= Event->timer (
		2800	reentrant => 0,
		2801	after => 0,
		2802	data => WF_AUTOCANCEL,
		2803	cb => sub {
		2804	do_reload_perl;
		2805	undef $RELOAD_WATCHER;
		2806	},
		2807	);
		2808	}
		2809
1380	register_command "perl-reload" => sub {	2810	register_command "reload" => sub {
1381	my ($who, $arg) = @_;	2811	my ($who, $arg) = @_;
1382		2812
1383	if ($who->flag (FLAG_WIZ)) {	2813	if ($who->flag (FLAG_WIZ)) {
1384	$who->message ("start of reload.");
1385	perl_reload;
1386	$who->message ("end of reload.");	2814	$who->message ("reloading server.");
		2815	async { reload_perl };
1387	}	2816	}
1388	};	2817	};
1389		2818
1390	unshift @INC, $LIBDIR;	2819	unshift @INC, $LIBDIR;
1391		2820
		2821	my $bug_warning = 0;
		2822
		2823	our @WAIT_FOR_TICK;
		2824	our @WAIT_FOR_TICK_BEGIN;
		2825
		2826	sub wait_for_tick {
		2827	return unless $TICK_WATCHER->is_active;
		2828	return if $Coro::current == $Coro::main;
		2829
		2830	my $signal = new Coro::Signal;
		2831	push @WAIT_FOR_TICK, $signal;
		2832	$signal->wait;
		2833	}
		2834
		2835	sub wait_for_tick_begin {
		2836	return unless $TICK_WATCHER->is_active;
		2837	return if $Coro::current == $Coro::main;
		2838
		2839	my $signal = new Coro::Signal;
		2840	push @WAIT_FOR_TICK_BEGIN, $signal;
		2841	$signal->wait;
		2842	}
		2843
		2844	my $min = 1e6;#d#
		2845	my $avg = 10;
1392	$TICK_WATCHER = Event->timer (	2846	$TICK_WATCHER = Event->timer (
1393	reentrant => 0,	2847	reentrant => 0,
		2848	parked => 1,
1394	prio => 0,	2849	prio => 0,
1395	at => $NEXT_TICK || $TICK,	2850	at => $NEXT_TICK || $TICK,
1396	data => WF_AUTOCANCEL,	2851	data => WF_AUTOCANCEL,
1397	cb => sub {	2852	cb => sub {
1398	unless ($FREEZE) {	2853	if ($Coro::current != $Coro::main) {
		2854	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2855	unless ++$bug_warning > 10;
		2856	return;
		2857	}
		2858
		2859	$NOW = $tick_start = Event::time;
		2860
1399	cf::server_tick; # one server iteration	2861	cf::server_tick; # one server iteration
1400	$RUNTIME += $TICK;	2862
		2863	0 && sync_job {#d#
		2864	for(1..10) {
		2865	my $t = Event::time;
		2866	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2867	or die;
		2868
		2869	$map->width (50);
		2870	$map->height (50);
		2871	$map->alloc;
		2872	$map->_load_objects ("/tmp/x.map", 1);
		2873	my $t = Event::time - $t;
		2874
		2875	#next unless $t < 0.0013;#d#
		2876	if ($t < $min) {
		2877	$min = $t;
		2878	}
		2879	$avg = $avg * 0.99 + $t * 0.01;
		2880	}
		2881	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2882	exit 0;
		2883	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
1401	}	2884	};
1402		2885
		2886	$RUNTIME += $TICK;
1403	$NEXT_TICK += $TICK;	2887	$NEXT_TICK += $TICK;
1404		2888
		2889	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2890	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2891	Coro::async_pool {
		2892	write_runtime
		2893	or warn "ERROR: unable to write runtime file: $!";
		2894	};
		2895	}
		2896
		2897	# my $AFTER = Event::time;
		2898	# warn $AFTER - $NOW;#d#
		2899
		2900	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2901	$sig->send;
		2902	}
		2903	while (my $sig = shift @WAIT_FOR_TICK) {
		2904	$sig->send;
		2905	}
		2906
		2907	$NOW = Event::time;
		2908
1405	# if we are delayed by four ticks or more, skip them all	2909	# if we are delayed by four ticks or more, skip them all
1406	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	2910	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1407		2911
1408	$TICK_WATCHER->at ($NEXT_TICK);	2912	$TICK_WATCHER->at ($NEXT_TICK);
1409	$TICK_WATCHER->start;	2913	$TICK_WATCHER->start;
		2914
		2915	$LOAD = ($NOW - $tick_start) / $TICK;
		2916	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2917
		2918	_post_tick;
		2919
		2920
1410	},	2921	},
1411	);	2922	);
1412		2923
		2924	{
		2925	BDB::max_poll_time $TICK * 0.1;
		2926	$BDB_POLL_WATCHER = Event->io (
		2927	reentrant => 0,
		2928	fd => BDB::poll_fileno,
		2929	poll => 'r',
		2930	prio => 0,
		2931	data => WF_AUTOCANCEL,
		2932	cb => \&BDB::poll_cb,
		2933	);
		2934	BDB::min_parallel 8;
		2935
		2936	BDB::set_sync_prepare {
		2937	my $status;
		2938	my $current = $Coro::current;
		2939	(
		2940	sub {
		2941	$status = $!;
		2942	$current->ready; undef $current;
		2943	},
		2944	sub {
		2945	Coro::schedule while defined $current;
		2946	$! = $status;
		2947	},
		2948	)
		2949	};
		2950
		2951	unless ($DB_ENV) {
		2952	$DB_ENV = BDB::db_env_create;
		2953
		2954	cf::sync_job {
		2955	eval {
		2956	BDB::db_env_open
		2957	$DB_ENV,
		2958	$BDBDIR,
		2959	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2960	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2961	0666;
		2962
		2963	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2964
		2965	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2966	$DB_ENV->set_lk_detect;
		2967	};
		2968
		2969	cf::cleanup "db_env_open(db): $@" if $@;
		2970	};
		2971	}
		2972	}
		2973
		2974	{
		2975	IO::AIO::min_parallel 8;
		2976
		2977	undef $Coro::AIO::WATCHER;
1413	IO::AIO::max_poll_time $TICK * 0.2;	2978	IO::AIO::max_poll_time $TICK * 0.1;
1414		2979	$AIO_POLL_WATCHER = Event->io (
1415	Event->io (fd => IO::AIO::poll_fileno,	2980	reentrant => 0,
1416	poll => 'r',
1417	prio => 5,
1418	data => WF_AUTOCANCEL,	2981	data => WF_AUTOCANCEL,
		2982	fd => IO::AIO::poll_fileno,
		2983	poll => 'r',
		2984	prio => 6,
1419	cb => \&IO::AIO::poll_cb);	2985	cb => \&IO::AIO::poll_cb,
		2986	);
		2987	}
1420		2988
1421	# we must not ever block the main coroutine	2989	my $_log_backtrace;
1422	$Coro::idle = sub {	2990
1423	#Carp::cluck "FATAL: Coro::idle was called, major BUG\n";#d#	2991	sub _log_backtrace {
1424	warn "FATAL: Coro::idle was called, major BUG\n";	2992	my ($msg, @addr) = @_;
1425	(Coro::unblock_sub {	2993
1426	Event::one_event;	2994	$msg =~ s/\n//;
1427	})->();	2995
1428	};	2996	# limit the # of concurrent backtraces
		2997	if ($_log_backtrace < 2) {
		2998	++$_log_backtrace;
		2999	async {
		3000	my @bt = fork_call {
		3001	@addr = map { sprintf "%x", $_ } @addr;
		3002	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		3003	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		3004	or die "addr2line: $!";
		3005
		3006	my @funcs;
		3007	my @res = <$fh>;
		3008	chomp for @res;
		3009	while (@res) {
		3010	my ($func, $line) = splice @res, 0, 2, ();
		3011	push @funcs, "[$func] $line";
		3012	}
		3013
		3014	@funcs
		3015	};
		3016
		3017	LOG llevInfo, "[ABT] $msg\n";
		3018	LOG llevInfo, "[ABT] $_\n" for @bt;
		3019	--$_log_backtrace;
		3020	};
		3021	} else {
		3022	LOG llevInfo, "[ABT] $msg\n";
		3023	LOG llevInfo, "[ABT] [suppressed]\n";
		3024	}
		3025	}
		3026
		3027	# load additional modules
		3028	use cf::pod;
		3029
		3030	END { cf::emergency_save }
1429		3031
1430	1	3032	1
1431		3033

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