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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.100 by root, Mon Dec 25 11:25:49 2006 UTC vs.
Revision 1.267 by root, Sat May 19 00:08:11 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
…		…
454	=cut	763	=cut
455		764
456	#############################################################################	765	#############################################################################
457	# object support	766	# object support
458		767
		768	sub reattach {
		769	# basically do the same as instantiate, without calling instantiate
		770	my ($obj) = @_;
		771
		772	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		773
		774	my $registry = $obj->registry;
		775
		776	@$registry = ();
		777
		778	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
		779
		780	for my $name (keys %{ $obj->{_attachment} || {} }) {
		781	if (my $attach = $attachment{$name}) {
		782	for (@$attach) {
		783	my ($klass, @attach) = @$_;
		784	_attach $registry, $klass, @attach;
		785	}
		786	} else {
		787	warn "object uses attachment '$name' that is not available, postponing.\n";
		788	}
		789	}
		790	}
		791
459	cf::attachable->attach (	792	cf::attachable->attach (
460	prio => -1000000,	793	prio => -1000000,
461	on_instantiate => sub {	794	on_instantiate => sub {
462	my ($obj, $data) = @_;	795	my ($obj, $data) = @_;
463		796
…		…
467	my ($name, $args) = @$_;	800	my ($name, $args) = @$_;
468		801
469	$obj->attach ($name, %{$args || {} });	802	$obj->attach ($name, %{$args || {} });
470	}	803	}
471	},	804	},
472	on_reattach => sub {	805	on_reattach => \&reattach,
473	# basically do the same as instantiate, without calling instantiate
474	my ($obj) = @_;
475	my $registry = $obj->registry;
476
477	@$registry = ();
478
479	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
480
481	for my $name (keys %{ $obj->{_attachment} || {} }) {
482	if (my $attach = $attachment{$name}) {
483	for (@$attach) {
484	my ($klass, @attach) = @$_;
485	_attach $registry, $klass, @attach;
486	}
487	} else {
488	warn "object uses attachment '$name' that is not available, postponing.\n";
489	}
490	}
491	},
492	on_clone => sub {	806	on_clone => sub {
493	my ($src, $dst) = @_;	807	my ($src, $dst) = @_;
494		808
495	@{$dst->registry} = @{$src->registry};	809	@{$dst->registry} = @{$src->registry};
496		810
…		…
502	);	816	);
503		817
504	sub object_freezer_save {	818	sub object_freezer_save {
505	my ($filename, $rdata, $objs) = @_;	819	my ($filename, $rdata, $objs) = @_;
506		820
		821	sync_job {
507	if (length $$rdata) {	822	if (length $$rdata) {
508	warn sprintf "saving %s (%d,%d)\n",	823	warn sprintf "saving %s (%d,%d)\n",
509	$filename, length $$rdata, scalar @$objs;	824	$filename, length $$rdata, scalar @$objs;
510		825
511	if (open my $fh, ">:raw", "$filename~") {	826	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
512	chmod SAVE_MODE, $fh;
513	syswrite $fh, $$rdata;
514	close $fh;
515
516	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
517	chmod SAVE_MODE, $fh;	827	chmod SAVE_MODE, $fh;
518	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;
519	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 $fh;
520	rename "$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~", $filename;
521	} else {	846	} else {
522	unlink "$filename.pst";	847	warn "FATAL: $filename~: $!\n";
523	}	848	}
524
525	rename "$filename~", $filename;
526	} else {	849	} else {
527	warn "FATAL: $filename~: $!\n";
528	}
529	} else {
530	unlink $filename;	850	aio_unlink $filename;
531	unlink "$filename.pst";	851	aio_unlink "$filename.pst";
		852	}
532	}	853	}
533	}	854	}
534		855
535	sub object_freezer_as_string {	856	sub object_freezer_as_string {
536	my ($rdata, $objs) = @_;	857	my ($rdata, $objs) = @_;
…		…
541	}	862	}
542		863
543	sub object_thawer_load {	864	sub object_thawer_load {
544	my ($filename) = @_;	865	my ($filename) = @_;
545		866
546	local $/;	867	my ($data, $av);
547		868
548	my $av;	869	(aio_load $filename, $data) >= 0
		870	or return;
549		871
550	#TODO: use sysread etc.	872	unless (aio_stat "$filename.pst") {
551	if (open my $data, "<:raw:perlio", $filename) {	873	(aio_load "$filename.pst", $av) >= 0
552	$data = <$data>;	874	or return;
553	if (open my $pst, "<:raw:perlio", "$filename.pst") {
554	$av = eval { (Storable::thaw <$pst>)->{objs} };	875	$av = eval { (Storable::thaw $av)->{objs} };
555	}	876	}
		877
		878	warn sprintf "loading %s (%d)\n",
		879	$filename, length $data, scalar @{$av || []};#d#
556	return ($data, $av);	880	return ($data, $av);
557	}
558
559	()
560	}	881	}
561		882
562	#############################################################################	883	#############################################################################
563	# command handling &c	884	# command handling &c
564		885
…		…
588	=cut	909	=cut
589		910
590	sub register_extcmd {	911	sub register_extcmd {
591	my ($name, $cb) = @_;	912	my ($name, $cb) = @_;
592		913
593	my $caller = caller;
594	#warn "registering extcmd '$name' to '$caller'";
595
596	$EXTCMD{$name} = [$cb, $caller];	914	$EXTCMD{$name} = $cb;
597	}	915	}
598		916
599	cf::player->attach (	917	cf::player->attach (
600	on_command => sub {	918	on_command => sub {
601	my ($pl, $name, $params) = @_;	919	my ($pl, $name, $params) = @_;
…		…
614		932
615	my $msg = eval { from_json $buf };	933	my $msg = eval { from_json $buf };
616		934
617	if (ref $msg) {	935	if (ref $msg) {
618	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	936	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
619	if (my %reply = $cb->[0]->($pl, $msg)) {	937	if (my %reply = $cb->($pl, $msg)) {
620	$pl->ext_reply ($msg->{msgid}, %reply);	938	$pl->ext_reply ($msg->{msgid}, %reply);
621	}	939	}
622	}	940	}
623	} else {	941	} else {
624	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	942	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
626		944
627	cf::override;	945	cf::override;
628	},	946	},
629	);	947	);
630		948
631	sub register {
632	my ($base, $pkg) = @_;
633
634	#TODO
635	}
636
637	sub load_extension {	949	sub load_extension {
638	my ($path) = @_;	950	my ($path) = @_;
639		951
640	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	952	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
641	my $base = $1;	953	my $base = $1;
642	my $pkg = $1;	954	my $pkg = $1;
643	$pkg =~ s/[^[:word:]]/_/g;	955	$pkg =~ s/[^[:word:]]/_/g;
644	$pkg = "ext::$pkg";	956	$pkg = "ext::$pkg";
645		957
646	warn "loading '$path' into '$pkg'\n";	958	warn "... loading '$path' into '$pkg'\n";
647		959
648	open my $fh, "<:utf8", $path	960	open my $fh, "<:utf8", $path
649	or die "$path: $!";	961	or die "$path: $!";
650		962
651	my $source =	963	my $source =
652	"package $pkg; use strict; use utf8;\n"	964	"package $pkg; use strict; use utf8;\n"
653	. "#line 1 \"$path\"\n{\n"	965	. "#line 1 \"$path\"\n{\n"
654	. (do { local $/; <$fh> })	966	. (do { local $/; <$fh> })
655	. "\n};\n1";	967	. "\n};\n1";
656		968
657	eval $source	969	unless (eval $source) {
658	or die $@ ? "$path: $@\n"	970	my $msg = $@ ? "$path: $@\n"
659	: "extension disabled.\n";	971	: "extension disabled.\n";
660		972	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
661	push @exts, $pkg;	973	warn $@;
662	$ext_pkg{$base} = $pkg;	974	warn "mandatory extension failed to load, exiting.\n";
663		975	exit 1;
664	# no strict 'refs';	976	}
665	# @{"$pkg\::ISA"} = ext::;	977	die $@;
666
667	register $base, $pkg;
668	}
669
670	sub unload_extension {
671	my ($pkg) = @_;
672
673	warn "removing extension $pkg\n";
674
675	# remove hooks
676	#TODO
677	# for my $idx (0 .. $#PLUGIN_EVENT) {
678	# delete $hook[$idx]{$pkg};
679	# }	978	}
680		979
681	# remove commands	980	push @EXTS, $pkg;
682	for my $name (keys %COMMAND) {
683	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
684
685	if (@cb) {
686	$COMMAND{$name} = \@cb;
687	} else {
688	delete $COMMAND{$name};
689	}
690	}
691
692	# remove extcmds
693	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
694	delete $EXTCMD{$name};
695	}
696
697	if (my $cb = $pkg->can ("unload")) {
698	eval {
699	$cb->($pkg);
700	1
701	} or warn "$pkg unloaded, but with errors: $@";
702	}
703
704	Symbol::delete_package $pkg;
705	}	981	}
706		982
707	sub load_extensions {	983	sub load_extensions {
708	for my $ext (<$LIBDIR/*.ext>) {	984	for my $ext (<$LIBDIR/*.ext>) {
709	next unless -r $ext;	985	next unless -r $ext;
…		…
713	} or warn "$ext not loaded: $@";	989	} or warn "$ext not loaded: $@";
714	}	990	}
715	}	991	}
716		992
717	#############################################################################	993	#############################################################################
718	# load/save/clean perl data associated with a map
719		994
720	*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	$self
		1589	}
		1590
		1591	# find and load all maps in the 3x3 area around a map
		1592	sub load_diag {
721	my ($map) = @_;	1593	my ($map) = @_;
722		1594
723	my $path = $map->tmpname;	1595	my @diag; # diagonal neighbours
724	defined $path or return;
725		1596
726	unlink "$path.pst";	1597	for (0 .. 3) {
727	};	1598	my $neigh = $map->tile_path ($_)
		1599	or next;
		1600	$neigh = find $neigh, $map
		1601	or next;
		1602	$neigh->load;
728		1603
729	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1604	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1605	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1606	}
730		1607
731	#############################################################################	1608	for (@diag) {
732	# load/save perl data associated with player->ob objects	1609	my $neigh = find @$_
733		1610	or next;
734	sub all_objects(@) {	1611	$neigh->load;
735	@_, map all_objects ($_->inv), @_	1612	}
736	}	1613	}
737		1614
738	# TODO: compatibility cruft, remove when no longer needed	1615	sub find_sync {
739	cf::player->attach (	1616	my ($path, $origin) = @_;
740	on_load => sub {
741	my ($pl, $path) = @_;
742		1617
743	for my $o (all_objects $pl->ob) {	1618	cf::sync_job { find $path, $origin }
744	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1619	}
745	$o->set_ob_key_value ("_perl_data");
746		1620
747	%$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};
748	}	1648	}
749	}	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);
750	},	1684	}
751	);	1685	}
752		1686
753	#############################################################################	1687	sub swap_out {
		1688	my ($self) = @_;
754		1689
755	=head2 CORE EXTENSIONS	1690	# save first because save cedes
		1691	$self->save;
756		1692
757	Functions and methods that extend core crossfire objects.	1693	my $lock = cf::lock_acquire "map_data:" . $self->path;
758		1694
759	=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;
760		1805
761	=over 4	1806	=over 4
762		1807
763	=item cf::player::exists $login	1808	=item $ob->inv_recursive
764		1809
765	Returns true when the given account exists.	1810	Returns the inventory of the object _and_ their inventories, recursively.
766		1811
767	=cut	1812	=cut
768		1813
769	sub cf::player::exists($) {	1814	sub inv_recursive_;
770	cf::player::find $_[0]	1815	sub inv_recursive_ {
771	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1816	map { $_, inv_recursive_ $_->inv } @_
772	}	1817	}
773		1818
774	=item $player->ext_reply ($msgid, $msgtype, %msg)	1819	sub inv_recursive {
775		1820	inv_recursive_ inv $_[0]
776	Sends an ext reply to the player.
777
778	=cut
779
780	sub cf::player::ext_reply($$$%) {
781	my ($self, $id, %msg) = @_;
782
783	$msg{msgid} = $id;
784
785	$self->send ("ext " . to_json \%msg);
786	}	1821	}
		1822
		1823	package cf;
787		1824
788	=back	1825	=back
789		1826
790	=head3 cf::object::player	1827	=head3 cf::object::player
791		1828
…		…
829	(ref $cf::CFG{"may_$access"}	1866	(ref $cf::CFG{"may_$access"}
830	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1867	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
831	: $cf::CFG{"may_$access"})	1868	: $cf::CFG{"may_$access"})
832	}	1869	}
833		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)
		1981
		1982	=cut
		1983
		1984	sub cf::object::player::goto {
		1985	my ($self, $path, $x, $y) = @_;
		1986
		1987	$self->enter_link;
		1988
		1989	(async {
		1990	my $map = eval {
		1991	my $map = cf::map::find $path;
		1992	$map = $map->customise_for ($self) if $map;
		1993	$map
		1994	} or
		1995	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1996
		1997	$self->leave_link ($map, $x, $y);
		1998	})->prio (1);
		1999	}
		2000
		2001	=item $player_object->enter_exit ($exit_object)
		2002
		2003	=cut
		2004
		2005	sub parse_random_map_params {
		2006	my ($spec) = @_;
		2007
		2008	my $rmp = { # defaults
		2009	xsize => (cf::rndm 15, 40),
		2010	ysize => (cf::rndm 15, 40),
		2011	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2012	#layout => string,
		2013	};
		2014
		2015	for (split /\n/, $spec) {
		2016	my ($k, $v) = split /\s+/, $_, 2;
		2017
		2018	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2019	}
		2020
		2021	$rmp
		2022	}
		2023
		2024	sub prepare_random_map {
		2025	my ($exit) = @_;
		2026
		2027	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2028
		2029	# all this does is basically replace the /! path by
		2030	# a new random map path (?random/...) with a seed
		2031	# that depends on the exit object
		2032
		2033	my $rmp = parse_random_map_params $exit->msg;
		2034
		2035	if ($exit->map) {
		2036	$rmp->{region} = $exit->region->name;
		2037	$rmp->{origin_map} = $exit->map->path;
		2038	$rmp->{origin_x} = $exit->x;
		2039	$rmp->{origin_y} = $exit->y;
		2040	}
		2041
		2042	$rmp->{random_seed} ||= $exit->random_seed;
		2043
		2044	my $data = cf::to_json $rmp;
		2045	my $md5 = Digest::MD5::md5_hex $data;
		2046	my $meta = "$RANDOMDIR/$md5.meta";
		2047
		2048	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2049	aio_write $fh, 0, (length $data), $data, 0;
		2050	undef $fh;
		2051	aio_rename "$meta~", $meta;
		2052
		2053	$exit->slaying ("?random/$md5");
		2054	$exit->msg (undef);
		2055	}
		2056	}
		2057
		2058	sub cf::object::player::enter_exit {
		2059	my ($self, $exit) = @_;
		2060
		2061	return unless $self->type == cf::PLAYER;
		2062
		2063	if ($exit->slaying eq "/!") {
		2064	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2065	# the problem is that $exit might not survive long enough
		2066	# so it needs to be done right now, right here
		2067	cf::sync_job { prepare_random_map $exit };
		2068	}
		2069
		2070	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2071	my $hp = $exit->stats->hp;
		2072	my $sp = $exit->stats->sp;
		2073
		2074	$self->enter_link;
		2075
		2076	(async {
		2077	$self->deactivate_recursive; # just to be sure
		2078	unless (eval {
		2079	$self->goto ($slaying, $hp, $sp);
		2080
		2081	1;
		2082	}) {
		2083	$self->message ("Something went wrong deep within the crossfire server. "
		2084	. "I'll try to bring you back to the map you were before. "
		2085	. "Please report this to the dungeon master!",
		2086	cf::NDI_UNIQUE | cf::NDI_RED);
		2087
		2088	warn "ERROR in enter_exit: $@";
		2089	$self->leave_link;
		2090	}
		2091	})->prio (1);
		2092	}
		2093
834	=head3 cf::client	2094	=head3 cf::client
835		2095
836	=over 4	2096	=over 4
837		2097
838	=item $client->send_drawinfo ($text, $flags)	2098	=item $client->send_drawinfo ($text, $flags)
…		…
844		2104
845	sub cf::client::send_drawinfo {	2105	sub cf::client::send_drawinfo {
846	my ($self, $text, $flags) = @_;	2106	my ($self, $text, $flags) = @_;
847		2107
848	utf8::encode $text;	2108	utf8::encode $text;
849	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2109	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
850	}	2110	}
851		2111
		2112	=item $client->ext_event ($type, %msg)
		2113
		2114	Sends an exti event to the client.
		2115
		2116	=cut
		2117
		2118	sub cf::client::ext_event($$%) {
		2119	my ($self, $type, %msg) = @_;
		2120
		2121	$msg{msgtype} = "event_$type";
		2122	$self->send_packet ("ext " . cf::to_json \%msg);
		2123	}
852		2124
853	=item $success = $client->query ($flags, "text", \&cb)	2125	=item $success = $client->query ($flags, "text", \&cb)
854		2126
855	Queues a query to the client, calling the given callback with	2127	Queues a query to the client, calling the given callback with
856	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2128	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
…		…
881	on_reply => sub {	2153	on_reply => sub {
882	my ($ns, $msg) = @_;	2154	my ($ns, $msg) = @_;
883		2155
884	# this weird shuffling is so that direct followup queries	2156	# this weird shuffling is so that direct followup queries
885	# get handled first	2157	# get handled first
886	my $queue = delete $ns->{query_queue};	2158	my $queue = delete $ns->{query_queue}
		2159	or return; # be conservative, not sure how that can happen, but we saw a crash here
887		2160
888	(shift @$queue)->[1]->($msg);	2161	(shift @$queue)->[1]->($msg);
		2162	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
889		2163
890	push @{ $ns->{query_queue} }, @$queue;	2164	push @{ $ns->{query_queue} }, @$queue;
891		2165
892	if (@{ $ns->{query_queue} } == @$queue) {	2166	if (@{ $ns->{query_queue} } == @$queue) {
893	if (@$queue) {	2167	if (@$queue) {
…		…
897	}	2171	}
898	}	2172	}
899	},	2173	},
900	);	2174	);
901		2175
902	=item $client->coro (\&cb)	2176	=item $client->async (\&cb)
903		2177
904	Create a new coroutine, running the specified callback. The coroutine will	2178	Create a new coroutine, running the specified callback. The coroutine will
905	be automatically cancelled when the client gets destroyed (e.g. on logout,	2179	be automatically cancelled when the client gets destroyed (e.g. on logout,
906	or loss of connection).	2180	or loss of connection).
907		2181
908	=cut	2182	=cut
909		2183
910	sub cf::client::coro {	2184	sub cf::client::async {
911	my ($self, $cb) = @_;	2185	my ($self, $cb) = @_;
912		2186
913	my $coro; $coro = async {	2187	my $coro = &Coro::async ($cb);
914	eval {	2188
915	$cb->();	2189	$coro->on_destroy (sub {
916	};
917	warn $@ if $@;
918	delete $self->{_coro}{$coro+0};	2190	delete $self->{_coro}{$coro+0};
919	};	2191	});
920		2192
921	$self->{_coro}{$coro+0} = $coro;	2193	$self->{_coro}{$coro+0} = $coro;
		2194
		2195	$coro
922	}	2196	}
923		2197
924	cf::client->attach (	2198	cf::client->attach (
925	on_destroy => sub {	2199	on_destroy => sub {
926	my ($ns) = @_;	2200	my ($ns) = @_;
…		…
951		2225
952	# here we export the classes and methods available to script code	2226	# here we export the classes and methods available to script code
953		2227
954	=pod	2228	=pod
955		2229
956	The following fucntions and emthods are available within a safe environment:	2230	The following functions and methods are available within a safe environment:
957		2231
958	cf::object contr pay_amount pay_player map	2232	cf::object contr pay_amount pay_player map
959	cf::object::player player	2233	cf::object::player player
960	cf::player peaceful	2234	cf::player peaceful
961	cf::map trigger	2235	cf::map trigger
…		…
1046	#############################################################################	2320	#############################################################################
1047		2321
1048	=head2 EXTENSION DATABASE SUPPORT	2322	=head2 EXTENSION DATABASE SUPPORT
1049		2323
1050	Crossfire maintains a very simple database for extension use. It can	2324	Crossfire maintains a very simple database for extension use. It can
1051	currently store anything that can be serialised using Storable, which	2325	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
1052	excludes objects.	2326	convert to/from binary).
1053		2327
1054	The parameter C<$family> should best start with the name of the extension	2328	The parameter C<$family> should best start with the name of the extension
1055	using it, it should be unique.	2329	using it, it should be unique.
1056		2330
1057	=over 4	2331	=over 4
1058		2332
1059	=item $hashref = cf::db_get $family
1060
1061	Return a hashref for use by the extension C<$family>, which can be
1062	modified. After modifications, you have to call C<cf::db_dirty> or
1063	C<cf::db_sync>.
1064
1065	=item $value = cf::db_get $family => $key	2333	=item $value = cf::db_get $family => $key
1066		2334
1067	Returns a single value from the database	2335	Returns a single value from the database.
1068
1069	=item cf::db_put $family => $hashref
1070
1071	Stores the given family hashref into the database. Updates are delayed, if
1072	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1073		2336
1074	=item cf::db_put $family => $key => $value	2337	=item cf::db_put $family => $key => $value
1075		2338
1076	Stores the given C<$value> in the family hash. Updates are delayed, if you	2339	Stores the given C<$value> in the family.
1077	want the data to be synced to disk immediately, use C<cf::db_sync>.
1078
1079	=item cf::db_dirty
1080
1081	Marks the database as dirty, to be updated at a later time.
1082
1083	=item cf::db_sync
1084
1085	Immediately write the database to disk I<if it is dirty>.
1086		2340
1087	=cut	2341	=cut
1088		2342
1089	our $DB;	2343	our $DB;
1090		2344
1091	{	2345	sub db_init {
1092	my $path = cf::localdir . "/database.pst";	2346	unless ($DB) {
		2347	$DB = BDB::db_create $DB_ENV;
1093		2348
1094	sub db_load() {	2349	cf::sync_job {
1095	warn "loading database $path\n";#d# remove later	2350	eval {
1096	$DB = stat $path ? Storable::retrieve $path : { };	2351	$DB->set_flags (BDB::CHKSUM);
1097	}
1098		2352
1099	my $pid;	2353	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1100		2354	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1101	sub db_save() {	2355	cf::cleanup "db_open(db): $!" if $!;
1102	warn "saving database $path\n";#d# remove later	2356	};
1103	waitpid $pid, 0 if $pid;	2357	cf::cleanup "db_open(db): $@" if $@;
1104	if (0 == ($pid = fork)) {
1105	$DB->{_meta}{version} = 1;
1106	Storable::nstore $DB, "$path~";
1107	rename "$path~", $path;
1108	cf::_exit 0 if defined $pid;
1109	}	2358	};
1110	}
1111
1112	my $dirty;
1113
1114	sub db_sync() {
1115	db_save if $dirty;
1116	undef $dirty;
1117	}
1118
1119	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1120	db_sync;
1121	});	2359	}
		2360	}
1122		2361
1123	sub db_dirty() {
1124	$dirty = 1;
1125	$idle->start;
1126	}
1127
1128	sub db_get($;$) {	2362	sub db_get($$) {
1129	@_ >= 2	2363	my $key = "$_[0]/$_[1]";
1130	? $DB->{$_[0]}{$_[1]}
1131	: ($DB->{$_[0]} ||= { })
1132	}
1133		2364
		2365	cf::sync_job {
		2366	BDB::db_get $DB, undef, $key, my $data;
		2367
		2368	$! ? ()
		2369	: $data
		2370	}
		2371	}
		2372
1134	sub db_put($$;$) {	2373	sub db_put($$$) {
1135	if (@_ >= 3) {	2374	BDB::dbreq_pri 4;
1136	$DB->{$_[0]}{$_[1]} = $_[2];	2375	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1137	} else {	2376	}
1138	$DB->{$_[0]} = $_[1];
1139	}
1140	db_dirty;
1141	}
1142		2377
1143	cf::global->attach (	2378	=item cf::cache $id => [$paths...], $processversion => $process
1144	prio => 10000,	2379
1145	on_cleanup => sub {	2380	Generic caching function that returns the value of the resource $id,
1146	db_sync;	2381	caching and regenerating as required.
		2382
		2383	This function can block.
		2384
		2385	=cut
		2386
		2387	sub cache {
		2388	my ($id, $src, $processversion, $process) = @_;
		2389
		2390	my $meta =
		2391	join "\x00",
		2392	$processversion,
		2393	map {
		2394	aio_stat $_
		2395	and Carp::croak "$_: $!";
		2396
		2397	($_, (stat _)[7,9])
		2398	} @$src;
		2399
		2400	my $dbmeta = db_get cache => "$id/meta";
		2401	if ($dbmeta ne $meta) {
		2402	# changed, we may need to process
		2403
		2404	my @data;
		2405	my $md5;
		2406
		2407	for (0 .. $#$src) {
		2408	0 <= aio_load $src->[$_], $data[$_]
		2409	or Carp::croak "$src->[$_]: $!";
1147	},	2410	}
1148	);	2411
		2412	# if processing is expensive, check
		2413	# checksum first
		2414	if (1) {
		2415	$md5 =
		2416	join "\x00",
		2417	$processversion,
		2418	map {
		2419	Coro::cede;
		2420	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2421	} 0.. $#$src;
		2422
		2423
		2424	my $dbmd5 = db_get cache => "$id/md5";
		2425	if ($dbmd5 eq $md5) {
		2426	db_put cache => "$id/meta", $meta;
		2427
		2428	return db_get cache => "$id/data";
		2429	}
		2430	}
		2431
		2432	my $t1 = Time::HiRes::time;
		2433	my $data = $process->(\@data);
		2434	my $t2 = Time::HiRes::time;
		2435
		2436	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2437
		2438	db_put cache => "$id/data", $data;
		2439	db_put cache => "$id/md5" , $md5;
		2440	db_put cache => "$id/meta", $meta;
		2441
		2442	return $data;
		2443	}
		2444
		2445	db_get cache => "$id/data"
1149	}	2446	}
		2447
		2448	=item fork_call { }, $args
		2449
		2450	Executes the given code block with the given arguments in a seperate
		2451	process, returning the results. Everything must be serialisable with
		2452	Coro::Storable. May, of course, block. Note that the executed sub may
		2453	never block itself or use any form of Event handling.
		2454
		2455	=cut
		2456
		2457	sub fork_call(&@) {
		2458	my ($cb, @args) = @_;
		2459
		2460	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2461	# or die "socketpair: $!";
		2462	pipe my $fh1, my $fh2
		2463	or die "pipe: $!";
		2464
		2465	if (my $pid = fork) {
		2466	close $fh2;
		2467
		2468	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2469	$res = Coro::Storable::thaw $res;
		2470
		2471	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2472
		2473	die $$res unless "ARRAY" eq ref $res;
		2474
		2475	return wantarray ? @$res : $res->[-1];
		2476	} else {
		2477	reset_signals;
		2478	local $SIG{__WARN__};
		2479	local $SIG{__DIE__};
		2480	eval {
		2481	close $fh1;
		2482
		2483	my @res = eval { $cb->(@args) };
		2484	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2485	};
		2486
		2487	warn $@ if $@;
		2488	_exit 0;
		2489	}
		2490	}
		2491
		2492
1150		2493
1151	#############################################################################	2494	#############################################################################
1152	# the server's main()	2495	# the server's init and main functions
		2496
		2497	sub load_facedata($) {
		2498	my ($path) = @_;
		2499
		2500	warn "loading facedata from $path\n";
		2501
		2502	my $facedata;
		2503	0 < aio_load $path, $facedata
		2504	or die "$path: $!";
		2505
		2506	$facedata = Coro::Storable::thaw $facedata;
		2507
		2508	$facedata->{version} == 2
		2509	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2510
		2511	{
		2512	my $faces = $facedata->{faceinfo};
		2513
		2514	while (my ($face, $info) = each %$faces) {
		2515	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2516	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2517	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2518	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2519	Coro::cede;
		2520	}
		2521
		2522	while (my ($face, $info) = each %$faces) {
		2523	next unless $info->{smooth};
		2524	my $idx = cf::face::find $face
		2525	or next;
		2526	if (my $smooth = cf::face::find $info->{smooth}) {
		2527	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2528	} else {
		2529	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2530	}
		2531	Coro::cede;
		2532	}
		2533	}
		2534
		2535	{
		2536	my $anims = $facedata->{animinfo};
		2537
		2538	while (my ($anim, $info) = each %$anims) {
		2539	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2540	Coro::cede;
		2541	}
		2542
		2543	cf::anim::invalidate_all; # d'oh
		2544	}
		2545
		2546	1
		2547	}
		2548
		2549	sub reload_regions {
		2550	load_resource_file "$MAPDIR/regions"
		2551	or die "unable to load regions file\n";
		2552	}
		2553
		2554	sub reload_facedata {
		2555	load_facedata "$DATADIR/facedata"
		2556	or die "unable to load facedata\n";
		2557	}
		2558
		2559	sub reload_archetypes {
		2560	load_resource_file "$DATADIR/archetypes"
		2561	or die "unable to load archetypes\n";
		2562	}
		2563
		2564	sub reload_treasures {
		2565	load_resource_file "$DATADIR/treasures"
		2566	or die "unable to load treasurelists\n";
		2567	}
		2568
		2569	sub reload_resources {
		2570	warn "reloading resource files...\n";
		2571
		2572	reload_regions;
		2573	reload_facedata;
		2574	reload_archetypes;
		2575	reload_treasures;
		2576
		2577	warn "finished reloading resource files\n";
		2578	}
		2579
		2580	sub init {
		2581	reload_resources;
		2582	}
1153		2583
1154	sub cfg_load {	2584	sub cfg_load {
1155	open my $fh, "<:utf8", cf::confdir . "/config"	2585	open my $fh, "<:utf8", "$CONFDIR/config"
1156	or return;	2586	or return;
1157		2587
1158	local $/;	2588	local $/;
1159	*CFG = YAML::Syck::Load <$fh>;	2589	*CFG = YAML::Syck::Load <$fh>;
		2590
		2591	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2592
		2593	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2594	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2595
		2596	if (exists $CFG{mlockall}) {
		2597	eval {
		2598	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2599	and die "WARNING: m(un)lockall failed: $!\n";
		2600	};
		2601	warn $@ if $@;
		2602	}
1160	}	2603	}
1161		2604
1162	sub main {	2605	sub main {
		2606	# we must not ever block the main coroutine
		2607	local $Coro::idle = sub {
		2608	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2609	(async {
		2610	Event::one_event;
		2611	})->prio (Coro::PRIO_MAX);
		2612	};
		2613
1163	cfg_load;	2614	cfg_load;
1164	db_load;	2615	db_init;
1165	load_extensions;	2616	load_extensions;
		2617
		2618	$TICK_WATCHER->start;
1166	Event::loop;	2619	Event::loop;
1167	}	2620	}
1168		2621
1169	#############################################################################	2622	#############################################################################
1170	# initialisation	2623	# initialisation and cleanup
1171		2624
1172	sub _perl_reload(&) {	2625	# install some emergency cleanup handlers
		2626	BEGIN {
		2627	for my $signal (qw(INT HUP TERM)) {
		2628	Event->signal (
		2629	reentrant => 0,
		2630	data => WF_AUTOCANCEL,
		2631	signal => $signal,
		2632	prio => 0,
		2633	cb => sub {
		2634	cf::cleanup "SIG$signal";
		2635	},
		2636	);
		2637	}
		2638	}
		2639
		2640	sub emergency_save() {
		2641	my $freeze_guard = cf::freeze_mainloop;
		2642
		2643	warn "enter emergency perl save\n";
		2644
		2645	cf::sync_job {
		2646	# use a peculiar iteration method to avoid tripping on perl
		2647	# refcount bugs in for. also avoids problems with players
		2648	# and maps saved/destroyed asynchronously.
		2649	warn "begin emergency player save\n";
		2650	for my $login (keys %cf::PLAYER) {
		2651	my $pl = $cf::PLAYER{$login} or next;
		2652	$pl->valid or next;
		2653	$pl->save;
		2654	}
		2655	warn "end emergency player save\n";
		2656
		2657	warn "begin emergency map save\n";
		2658	for my $path (keys %cf::MAP) {
		2659	my $map = $cf::MAP{$path} or next;
		2660	$map->valid or next;
		2661	$map->save;
		2662	}
		2663	warn "end emergency map save\n";
		2664
		2665	warn "begin emergency database checkpoint\n";
		2666	BDB::db_env_txn_checkpoint $DB_ENV;
		2667	warn "end emergency database checkpoint\n";
		2668	};
		2669
		2670	warn "leave emergency perl save\n";
		2671	}
		2672
		2673	sub post_cleanup {
1173	my ($msg) = @_;	2674	my ($make_core) = @_;
1174		2675
1175	$msg->("reloading...");	2676	warn Carp::longmess "post_cleanup backtrace"
		2677	if $make_core;
		2678	}
1176		2679
1177	eval {	2680	sub do_reload_perl() {
1178	# cancel all watchers	2681	# can/must only be called in main
		2682	if ($Coro::current != $Coro::main) {
		2683	warn "can only reload from main coroutine";
		2684	return;
		2685	}
		2686
		2687	warn "reloading...";
		2688
		2689	warn "entering sync_job";
		2690
		2691	cf::sync_job {
		2692	cf::write_runtime; # external watchdog should not bark
		2693	cf::emergency_save;
		2694	cf::write_runtime; # external watchdog should not bark
		2695
		2696	warn "syncing database to disk";
		2697	BDB::db_env_txn_checkpoint $DB_ENV;
		2698
		2699	# if anything goes wrong in here, we should simply crash as we already saved
		2700
		2701	warn "cancelling all WF_AUTOCANCEL watchers";
1179	for (Event::all_watchers) {	2702	for (Event::all_watchers) {
1180	$_->cancel if $_->data & WF_AUTOCANCEL;	2703	$_->cancel if $_->data & WF_AUTOCANCEL;
1181	}	2704	}
1182		2705
1183	# unload all extensions	2706	warn "flushing outstanding aio requests";
1184	for (@exts) {	2707	for (;;) {
1185	$msg->("unloading <$_>");	2708	BDB::flush;
1186	unload_extension $_;	2709	IO::AIO::flush;
		2710	Coro::cede;
		2711	last unless IO::AIO::nreqs || BDB::nreqs;
		2712	warn "iterate...";
		2713	}
		2714
		2715	++$RELOAD;
		2716
		2717	warn "cancelling all extension coros";
		2718	$_->cancel for values %EXT_CORO;
		2719	%EXT_CORO = ();
		2720
		2721	warn "removing commands";
		2722	%COMMAND = ();
		2723
		2724	warn "removing ext commands";
		2725	%EXTCMD = ();
		2726
		2727	warn "unloading/nuking all extensions";
		2728	for my $pkg (@EXTS) {
		2729	warn "... unloading $pkg";
		2730
		2731	if (my $cb = $pkg->can ("unload")) {
		2732	eval {
		2733	$cb->($pkg);
		2734	1
		2735	} or warn "$pkg unloaded, but with errors: $@";
1187	}	2736	}
1188		2737
		2738	warn "... nuking $pkg";
		2739	Symbol::delete_package $pkg;
		2740	}
		2741
1189	# unload all modules loaded from $LIBDIR	2742	warn "unloading all perl modules loaded from $LIBDIR";
1190	while (my ($k, $v) = each %INC) {	2743	while (my ($k, $v) = each %INC) {
1191	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2744	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1192		2745
1193	$msg->("removing <$k>");	2746	warn "... unloading $k";
1194	delete $INC{$k};	2747	delete $INC{$k};
1195		2748
1196	$k =~ s/\.pm$//;	2749	$k =~ s/\.pm$//;
1197	$k =~ s/\//::/g;	2750	$k =~ s/\//::/g;
1198		2751
…		…
1201	}	2754	}
1202		2755
1203	Symbol::delete_package $k;	2756	Symbol::delete_package $k;
1204	}	2757	}
1205		2758
1206	# sync database to disk
1207	cf::db_sync;
1208
1209	# get rid of safe::, as good as possible	2759	warn "getting rid of safe::, as good as possible";
1210	Symbol::delete_package "safe::$_"	2760	Symbol::delete_package "safe::$_"
1211	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2761	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1212		2762
1213	# remove register_script_function callbacks
1214	# TODO
1215
1216	# unload cf.pm "a bit"	2763	warn "unloading cf.pm \"a bit\"";
1217	delete $INC{"cf.pm"};	2764	delete $INC{"cf.pm"};
		2765	delete $INC{"cf/pod.pm"};
1218		2766
1219	# don't, removes xs symbols, too,	2767	# don't, removes xs symbols, too,
1220	# and global variables created in xs	2768	# and global variables created in xs
1221	#Symbol::delete_package __PACKAGE__;	2769	#Symbol::delete_package __PACKAGE__;
1222		2770
1223	# reload cf.pm	2771	warn "unload completed, starting to reload now";
		2772
1224	$msg->("reloading cf.pm");	2773	warn "reloading cf.pm";
1225	require cf;	2774	require cf;
1226	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt	2775	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1227		2776
1228
1229	# load config and database again	2777	warn "loading config and database again";
1230	cf::cfg_load;	2778	cf::cfg_load;
1231	cf::db_load;
1232		2779
1233	# load extensions	2780	warn "loading extensions";
1234	$msg->("load extensions");
1235	cf::load_extensions;	2781	cf::load_extensions;
1236		2782
1237	# reattach attachments to objects	2783	warn "reattaching attachments to objects/players";
1238	$msg->("reattach");	2784	_global_reattach; # objects, sockets
1239	_global_reattach;	2785	warn "reattaching attachments to maps";
		2786	reattach $_ for values %MAP;
		2787	warn "reattaching attachments to players";
		2788	reattach $_ for values %PLAYER;
		2789
		2790	warn "leaving sync_job";
		2791
		2792	1
		2793	} or do {
		2794	warn $@;
		2795	warn "error while reloading, exiting.";
		2796	exit 1;
1240	};	2797	};
1241	$msg->($@) if $@;
1242		2798
1243	$msg->("reloaded");	2799	warn "reloaded";
1244	};	2800	};
1245		2801
1246	sub perl_reload() {	2802	our $RELOAD_WATCHER; # used only during reload
1247	_perl_reload {	2803
1248	warn $_[0];	2804	sub reload_perl() {
1249	print "$_[0]\n";	2805	# doing reload synchronously and two reloads happen back-to-back,
		2806	# coro crashes during coro_state_free->destroy here.
		2807
		2808	$RELOAD_WATCHER ||= Event->timer (
		2809	reentrant => 0,
		2810	after => 0,
		2811	data => WF_AUTOCANCEL,
		2812	cb => sub {
		2813	do_reload_perl;
		2814	undef $RELOAD_WATCHER;
		2815	},
1250	};	2816	);
1251	}	2817	}
1252		2818
1253	register "<global>", __PACKAGE__;
1254
1255	register_command "perl-reload" => sub {	2819	register_command "reload" => sub {
1256	my ($who, $arg) = @_;	2820	my ($who, $arg) = @_;
1257		2821
1258	if ($who->flag (FLAG_WIZ)) {	2822	if ($who->flag (FLAG_WIZ)) {
1259	_perl_reload {	2823	$who->message ("reloading server.");
1260	warn $_[0];	2824	async { reload_perl };
1261	$who->message ($_[0]);
1262	};
1263	}	2825	}
1264	};	2826	};
1265		2827
1266	unshift @INC, $LIBDIR;	2828	unshift @INC, $LIBDIR;
1267		2829
		2830	my $bug_warning = 0;
		2831
		2832	our @WAIT_FOR_TICK;
		2833	our @WAIT_FOR_TICK_BEGIN;
		2834
		2835	sub wait_for_tick {
		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, $signal;
		2841	$signal->wait;
		2842	}
		2843
		2844	sub wait_for_tick_begin {
		2845	return unless $TICK_WATCHER->is_active;
		2846	return if $Coro::current == $Coro::main;
		2847
		2848	my $signal = new Coro::Signal;
		2849	push @WAIT_FOR_TICK_BEGIN, $signal;
		2850	$signal->wait;
		2851	}
		2852
1268	$TICK_WATCHER = Event->timer (	2853	$TICK_WATCHER = Event->timer (
		2854	reentrant => 0,
		2855	parked => 1,
1269	prio => 0,	2856	prio => 0,
1270	at => $NEXT_TICK || 1,	2857	at => $NEXT_TICK || $TICK,
1271	data => WF_AUTOCANCEL,	2858	data => WF_AUTOCANCEL,
1272	cb => sub {	2859	cb => sub {
		2860	if ($Coro::current != $Coro::main) {
		2861	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2862	unless ++$bug_warning > 10;
		2863	return;
		2864	}
		2865
		2866	$NOW = $tick_start = Event::time;
		2867
1273	cf::server_tick; # one server iteration	2868	cf::server_tick; # one server iteration
1274		2869
1275	my $NOW = Event::time;	2870	$RUNTIME += $TICK;
1276	$NEXT_TICK += $TICK;	2871	$NEXT_TICK += $TICK;
		2872
		2873	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2874	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2875	Coro::async_pool {
		2876	write_runtime
		2877	or warn "ERROR: unable to write runtime file: $!";
		2878	};
		2879	}
		2880
		2881	# my $AFTER = Event::time;
		2882	# warn $AFTER - $NOW;#d#
		2883
		2884	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2885	$sig->send;
		2886	}
		2887	while (my $sig = shift @WAIT_FOR_TICK) {
		2888	$sig->send;
		2889	}
		2890
		2891	$NOW = Event::time;
1277		2892
1278	# if we are delayed by four ticks or more, skip them all	2893	# if we are delayed by four ticks or more, skip them all
1279	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2894	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1280		2895
1281	$TICK_WATCHER->at ($NEXT_TICK);	2896	$TICK_WATCHER->at ($NEXT_TICK);
1282	$TICK_WATCHER->start;	2897	$TICK_WATCHER->start;
		2898
		2899	$LOAD = ($NOW - $tick_start) / $TICK;
		2900	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2901
		2902	_post_tick;
		2903
		2904
1283	},	2905	},
1284	);	2906	);
1285		2907
		2908	{
		2909	BDB::max_poll_time $TICK * 0.1;
		2910	$BDB_POLL_WATCHER = Event->io (
		2911	reentrant => 0,
		2912	fd => BDB::poll_fileno,
		2913	poll => 'r',
		2914	prio => 0,
		2915	data => WF_AUTOCANCEL,
		2916	cb => \&BDB::poll_cb,
		2917	);
		2918	BDB::min_parallel 8;
		2919
		2920	BDB::set_sync_prepare {
		2921	my $status;
		2922	my $current = $Coro::current;
		2923	(
		2924	sub {
		2925	$status = $!;
		2926	$current->ready; undef $current;
		2927	},
		2928	sub {
		2929	Coro::schedule while defined $current;
		2930	$! = $status;
		2931	},
		2932	)
		2933	};
		2934
		2935	unless ($DB_ENV) {
		2936	$DB_ENV = BDB::db_env_create;
		2937
		2938	cf::sync_job {
		2939	eval {
		2940	BDB::db_env_open
		2941	$DB_ENV,
		2942	$BDBDIR,
		2943	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2944	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2945	0666;
		2946
		2947	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2948
		2949	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2950	$DB_ENV->set_lk_detect;
		2951	};
		2952
		2953	cf::cleanup "db_env_open(db): $@" if $@;
		2954	};
		2955	}
		2956	}
		2957
		2958	{
		2959	IO::AIO::min_parallel 8;
		2960
		2961	undef $Coro::AIO::WATCHER;
1286	IO::AIO::max_poll_time $TICK * 0.2;	2962	IO::AIO::max_poll_time $TICK * 0.1;
1287		2963	$AIO_POLL_WATCHER = Event->io (
1288	Event->io (fd => IO::AIO::poll_fileno,	2964	reentrant => 0,
1289	poll => 'r',
1290	prio => 5,
1291	data => WF_AUTOCANCEL,	2965	data => WF_AUTOCANCEL,
		2966	fd => IO::AIO::poll_fileno,
		2967	poll => 'r',
		2968	prio => 6,
1292	cb => \&IO::AIO::poll_cb);	2969	cb => \&IO::AIO::poll_cb,
		2970	);
		2971	}
		2972
		2973	my $_log_backtrace;
		2974
		2975	sub _log_backtrace {
		2976	my ($msg, @addr) = @_;
		2977
		2978	$msg =~ s/\n//;
		2979
		2980	# limit the # of concurrent backtraces
		2981	if ($_log_backtrace < 2) {
		2982	++$_log_backtrace;
		2983	async {
		2984	my @bt = fork_call {
		2985	@addr = map { sprintf "%x", $_ } @addr;
		2986	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		2987	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		2988	or die "addr2line: $!";
		2989
		2990	my @funcs;
		2991	my @res = <$fh>;
		2992	chomp for @res;
		2993	while (@res) {
		2994	my ($func, $line) = splice @res, 0, 2, ();
		2995	push @funcs, "[$func] $line";
		2996	}
		2997
		2998	@funcs
		2999	};
		3000
		3001	LOG llevInfo, "[ABT] $msg\n";
		3002	LOG llevInfo, "[ABT] $_\n" for @bt;
		3003	--$_log_backtrace;
		3004	};
		3005	} else {
		3006	LOG llevInfo, "[ABT] $msg\n";
		3007	LOG llevInfo, "[ABT] [suppressed]\n";
		3008	}
		3009	}
		3010
		3011	# load additional modules
		3012	use cf::pod;
		3013
		3014	END { cf::emergency_save }
1293		3015
1294	1	3016	1
1295		3017

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