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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.96 by root, Fri Dec 22 06:02:29 2006 UTC vs.
Revision 1.265 by root, Fri May 11 08:00:00 2007 UTC

…		…
3	use utf8;	3	use utf8;
4	use strict;	4	use strict;
5		5
6	use Symbol;	6	use Symbol;
7	use List::Util;	7	use List::Util;
		8	use Socket;
8	use Storable;	9	use Storable;
		10	use Event;
9	use Opcode;	11	use Opcode;
10	use Safe;	12	use Safe;
11	use Safe::Hole;	13	use Safe::Hole;
12		14
13	use Coro;	15	use Coro 3.61 ();
		16	use Coro::State;
		17	use Coro::Handle;
14	use Coro::Event;	18	use Coro::Event;
15	use Coro::Timer;	19	use Coro::Timer;
16	use Coro::Signal;	20	use Coro::Signal;
17	use Coro::Semaphore;	21	use Coro::Semaphore;
18
19	use IO::AIO;	22	use Coro::AIO;
		23	use Coro::Storable;
		24
		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
36	_init_vars;	57	our $RELOAD; # number of reloads so far
37
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;
		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;
44		82
45	our %CFG;	83	our %CFG;
46		84
47	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;
48		115
49	#############################################################################	116	#############################################################################
50		117
51	=head2 GLOBAL VARIABLES	118	=head2 GLOBAL VARIABLES
52		119
…		…
54		121
55	=item $cf::UPTIME	122	=item $cf::UPTIME
56		123
57	The timestamp of the server start (so not actually an uptime).	124	The timestamp of the server start (so not actually an uptime).
58		125
59	=item $cf::LIBDIR	126	=item $cf::RUNTIME
60		127
61	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
62	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.
63		143
64	=item $cf::TICK	144	=item $cf::TICK
65		145
66	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.
67		157
68	=item %cf::CFG	158	=item %cf::CFG
69		159
70	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
71	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.
72		168
73	=back	169	=back
74		170
75	=cut	171	=cut
76		172
77	BEGIN {	173	BEGIN {
78	*CORE::GLOBAL::warn = sub {	174	*CORE::GLOBAL::warn = sub {
79	my $msg = join "", @_;	175	my $msg = join "", @_;
		176
80	$msg .= "\n"	177	$msg .= "\n"
81	unless $msg =~ /\n$/;	178	unless $msg =~ /\n$/;
82		179
83	print STDERR "cfperl: $msg";	180	$msg =~ s/([\x00-\x08\x0b-\x1f])/sprintf "\\x%02x", ord $1/ge;
		181
		182	utf8::encode $msg;
84	LOG llevError, "cfperl: $msg";	183	LOG llevError, $msg;
85	};	184	};
86	}	185	}
87		186
88	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
89	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
…		…
93	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	192	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';
94		193
95	# we bless all objects into (empty) derived classes to force a method lookup	194	# we bless all objects into (empty) derived classes to force a method lookup
96	# within the Safe compartment.	195	# within the Safe compartment.
97	for my $pkg (qw(	196	for my $pkg (qw(
98	cf::global	197	cf::global cf::attachable
99	cf::object cf::object::player	198	cf::object cf::object::player
100	cf::client cf::player	199	cf::client cf::player
101	cf::arch cf::living	200	cf::arch cf::living
102	cf::map cf::party cf::region	201	cf::map cf::party cf::region
103	)) {	202	)) {
…		…
107		206
108	$Event::DIED = sub {	207	$Event::DIED = sub {
109	warn "error in event callback: @_";	208	warn "error in event callback: @_";
110	};	209	};
111		210
112	my %ext_pkg;
113	my @exts;
114	my @hook;
115
116	=head2 UTILITY FUNCTIONS	211	=head2 UTILITY FUNCTIONS
117		212
118	=over 4	213	=over 4
119		214
120	=cut	215	=item dumpval $ref
121		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
122	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
123		239
124	=item $ref = cf::from_json $json	240	=item $ref = cf::from_json $json
125		241
126	Converts a JSON string into the corresponding perl data structure.	242	Converts a JSON string into the corresponding perl data structure.
127		243
128	=cut
129
130	sub from_json($) {
131	$JSON::Syck::ImplicitUnicode = 1; # work around JSON::Syck bugs
132	JSON::Syck::Load $_[0]
133	}
134
135	=item $json = cf::to_json $ref	244	=item $json = cf::to_json $ref
136		245
137	Converts a perl data structure into its JSON representation.	246	Converts a perl data structure into its JSON representation.
138		247
139	=cut	248	=item cf::lock_wait $string
140		249
141	sub to_json($) {	250	Wait until the given lock is available. See cf::lock_acquire.
142	$JSON::Syck::ImplicitUnicode = 0; # work around JSON::Syck bugs	251
143	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, "long sync job\n"
		362	if $time > $TICK * 0.5;
		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 });
144	}	443	}
145		444
146	=back	445	=back
147		446
148	=cut	447	=cut
…		…
269	exception.	568	exception.
270		569
271	=cut	570	=cut
272		571
273	# the following variables are defined in .xs and must not be re-created	572	# the following variables are defined in .xs and must not be re-created
274	our @CB_GLOBAL = (); # registry for all global events	573	our @CB_GLOBAL = (); # registry for all global events
		574	our @CB_ATTACHABLE = (); # registry for all attachables
275	our @CB_OBJECT = (); # all objects (should not be used except in emergency)	575	our @CB_OBJECT = (); # all objects (should not be used except in emergency)
276	our @CB_PLAYER = ();	576	our @CB_PLAYER = ();
277	our @CB_CLIENT = ();	577	our @CB_CLIENT = ();
278	our @CB_TYPE = (); # registry for type (cf-object class) based events	578	our @CB_TYPE = (); # registry for type (cf-object class) based events
279	our @CB_MAP = ();	579	our @CB_MAP = ();
280		580
281	my %attachment;	581	my %attachment;
		582
		583	sub cf::attachable::thawer_merge {
		584	# simply override everything except _meta
		585	local $_[0]{_meta};
		586	%{$_[0]} = %{$_[1]};
		587	}
282		588
283	sub _attach_cb($$$$) {	589	sub _attach_cb($$$$) {
284	my ($registry, $event, $prio, $cb) = @_;	590	my ($registry, $event, $prio, $cb) = @_;
285		591
286	use sort 'stable';	592	use sort 'stable';
…		…
289		595
290	@{$registry->[$event]} = sort	596	@{$registry->[$event]} = sort
291	{ $a->[0] cmp $b->[0] }	597	{ $a->[0] cmp $b->[0] }
292	@{$registry->[$event] || []}, $cb;	598	@{$registry->[$event] || []}, $cb;
293	}	599	}
		600
		601	# hack
		602	my %attachable_klass = map +($_ => 1), KLASS_OBJECT, KLASS_CLIENT, KLASS_PLAYER, KLASS_MAP;
294		603
295	# attach handles attaching event callbacks	604	# attach handles attaching event callbacks
296	# the only thing the caller has to do is pass the correct	605	# the only thing the caller has to do is pass the correct
297	# registry (== where the callback attaches to).	606	# registry (== where the callback attaches to).
298	sub _attach {	607	sub _attach {
…		…
300		609
301	my $object_type;	610	my $object_type;
302	my $prio = 0;	611	my $prio = 0;
303	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;	612	my %cb_id = map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == $klass, 0 .. $#EVENT;
304		613
		614	#TODO: get rid of this hack
		615	if ($attachable_klass{$klass}) {
		616	%cb_id = (%cb_id, map +("on_" . lc $EVENT[$_][0], $_) , grep $EVENT[$_][1] == KLASS_ATTACHABLE, 0 .. $#EVENT);
		617	}
		618
305	while (@arg) {	619	while (@arg) {
306	my $type = shift @arg;	620	my $type = shift @arg;
307		621
308	if ($type eq "prio") {	622	if ($type eq "prio") {
309	$prio = shift @arg;	623	$prio = shift @arg;
…		…
384	my ($obj, $name) = @_;	698	my ($obj, $name) = @_;
385		699
386	exists $obj->{_attachment}{$name}	700	exists $obj->{_attachment}{$name}
387	}	701	}
388		702
389	for my $klass (qw(GLOBAL OBJECT PLAYER CLIENT MAP)) {	703	for my $klass (qw(ATTACHABLE GLOBAL OBJECT PLAYER CLIENT MAP)) {
390	eval "#line " . __LINE__ . " 'cf.pm'	704	eval "#line " . __LINE__ . " 'cf.pm'
391	sub cf::\L$klass\E::_attach_registry {	705	sub cf::\L$klass\E::_attach_registry {
392	(\\\@CB_$klass, KLASS_$klass)	706	(\\\@CB_$klass, KLASS_$klass)
393	}	707	}
394		708
…		…
447	=cut	761	=cut
448		762
449	#############################################################################	763	#############################################################################
450	# object support	764	# object support
451		765
452	sub instantiate {
453	my ($obj, $data) = @_;
454
455	$data = from_json $data;
456
457	for (@$data) {
458	my ($name, $args) = @$_;
459
460	$obj->attach ($name, %{$args || {} });
461	}
462	}
463
464	# basically do the same as instantiate, without calling instantiate
465	sub reattach {	766	sub reattach {
		767	# basically do the same as instantiate, without calling instantiate
466	my ($obj) = @_;	768	my ($obj) = @_;
		769
		770	bless $obj, ref $obj; # re-bless in case extensions have been reloaded
		771
467	my $registry = $obj->registry;	772	my $registry = $obj->registry;
468		773
469	@$registry = ();	774	@$registry = ();
470		775
471	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };	776	delete $obj->{_attachment} unless scalar keys %{ $obj->{_attachment} || {} };
…		…
480	warn "object uses attachment '$name' that is not available, postponing.\n";	785	warn "object uses attachment '$name' that is not available, postponing.\n";
481	}	786	}
482	}	787	}
483	}	788	}
484		789
485	sub object_freezer_save {	790	cf::attachable->attach (
486	my ($filename, $rdata, $objs) = @_;
487
488	if (length $$rdata) {
489	warn sprintf "saving %s (%d,%d)\n",
490	$filename, length $$rdata, scalar @$objs;
491
492	if (open my $fh, ">:raw", "$filename~") {
493	chmod SAVE_MODE, $fh;
494	syswrite $fh, $$rdata;
495	close $fh;
496
497	if (@$objs && open my $fh, ">:raw", "$filename.pst~") {
498	chmod SAVE_MODE, $fh;
499	syswrite $fh, Storable::nfreeze { version => 1, objs => $objs };
500	close $fh;
501	rename "$filename.pst~", "$filename.pst";
502	} else {
503	unlink "$filename.pst";
504	}
505
506	rename "$filename~", $filename;
507	} else {
508	warn "FATAL: $filename~: $!\n";
509	}
510	} else {
511	unlink $filename;
512	unlink "$filename.pst";
513	}
514	}
515
516	sub object_freezer_as_string {
517	my ($rdata, $objs) = @_;
518
519	use Data::Dumper;
520
521	$$rdata . Dumper $objs
522	}
523
524	sub object_thawer_load {
525	my ($filename) = @_;
526
527	local $/;
528
529	my $av;
530
531	#TODO: use sysread etc.
532	if (open my $data, "<:raw:perlio", $filename) {
533	$data = <$data>;
534	if (open my $pst, "<:raw:perlio", "$filename.pst") {
535	$av = eval { (Storable::thaw <$pst>)->{objs} };
536	}
537	return ($data, $av);
538	}
539
540	()
541	}
542
543	cf::object->attach (
544	prio => -1000000,	791	prio => -1000000,
		792	on_instantiate => sub {
		793	my ($obj, $data) = @_;
		794
		795	$data = from_json $data;
		796
		797	for (@$data) {
		798	my ($name, $args) = @$_;
		799
		800	$obj->attach ($name, %{$args || {} });
		801	}
		802	},
		803	on_reattach => \&reattach,
545	on_clone => sub {	804	on_clone => sub {
546	my ($src, $dst) = @_;	805	my ($src, $dst) = @_;
547		806
548	@{$dst->registry} = @{$src->registry};	807	@{$dst->registry} = @{$src->registry};
549		808
…		…
552	%{$dst->{_attachment}} = %{$src->{_attachment}}	811	%{$dst->{_attachment}} = %{$src->{_attachment}}
553	if exists $src->{_attachment};	812	if exists $src->{_attachment};
554	},	813	},
555	);	814	);
556		815
		816	sub object_freezer_save {
		817	my ($filename, $rdata, $objs) = @_;
		818
		819	sync_job {
		820	if (length $$rdata) {
		821	warn sprintf "saving %s (%d,%d)\n",
		822	$filename, length $$rdata, scalar @$objs;
		823
		824	if (my $fh = aio_open "$filename~", O_WRONLY | O_CREAT, 0600) {
		825	chmod SAVE_MODE, $fh;
		826	aio_write $fh, 0, (length $$rdata), $$rdata, 0;
		827	aio_fsync $fh if $cf::USE_FSYNC;
		828	close $fh;
		829
		830	if (@$objs) {
		831	if (my $fh = aio_open "$filename.pst~", O_WRONLY | O_CREAT, 0600) {
		832	chmod SAVE_MODE, $fh;
		833	my $data = Storable::nfreeze { version => 1, objs => $objs };
		834	aio_write $fh, 0, (length $data), $data, 0;
		835	aio_fsync $fh if $cf::USE_FSYNC;
		836	close $fh;
		837	aio_rename "$filename.pst~", "$filename.pst";
		838	}
		839	} else {
		840	aio_unlink "$filename.pst";
		841	}
		842
		843	aio_rename "$filename~", $filename;
		844	} else {
		845	warn "FATAL: $filename~: $!\n";
		846	}
		847	} else {
		848	aio_unlink $filename;
		849	aio_unlink "$filename.pst";
		850	}
		851	}
		852	}
		853
		854	sub object_freezer_as_string {
		855	my ($rdata, $objs) = @_;
		856
		857	use Data::Dumper;
		858
		859	$$rdata . Dumper $objs
		860	}
		861
		862	sub object_thawer_load {
		863	my ($filename) = @_;
		864
		865	my ($data, $av);
		866
		867	(aio_load $filename, $data) >= 0
		868	or return;
		869
		870	unless (aio_stat "$filename.pst") {
		871	(aio_load "$filename.pst", $av) >= 0
		872	or return;
		873	$av = eval { (Storable::thaw $av)->{objs} };
		874	}
		875
		876	warn sprintf "loading %s (%d)\n",
		877	$filename, length $data, scalar @{$av || []};#d#
		878	return ($data, $av);
		879	}
		880
557	#############################################################################	881	#############################################################################
558	# command handling &c	882	# command handling &c
559		883
560	=item cf::register_command $name => \&callback($ob,$args);	884	=item cf::register_command $name => \&callback($ob,$args);
561		885
…		…
583	=cut	907	=cut
584		908
585	sub register_extcmd {	909	sub register_extcmd {
586	my ($name, $cb) = @_;	910	my ($name, $cb) = @_;
587		911
588	my $caller = caller;
589	#warn "registering extcmd '$name' to '$caller'";
590
591	$EXTCMD{$name} = [$cb, $caller];	912	$EXTCMD{$name} = $cb;
592	}	913	}
593		914
594	cf::player->attach (	915	cf::player->attach (
595	on_command => sub {	916	on_command => sub {
596	my ($pl, $name, $params) = @_;	917	my ($pl, $name, $params) = @_;
…		…
609		930
610	my $msg = eval { from_json $buf };	931	my $msg = eval { from_json $buf };
611		932
612	if (ref $msg) {	933	if (ref $msg) {
613	if (my $cb = $EXTCMD{$msg->{msgtype}}) {	934	if (my $cb = $EXTCMD{$msg->{msgtype}}) {
614	if (my %reply = $cb->[0]->($pl, $msg)) {	935	if (my %reply = $cb->($pl, $msg)) {
615	$pl->ext_reply ($msg->{msgid}, %reply);	936	$pl->ext_reply ($msg->{msgid}, %reply);
616	}	937	}
617	}	938	}
618	} else {	939	} else {
619	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";	940	warn "player " . ($pl->ob->name) . " sent unparseable ext message: <$buf>\n";
…		…
621		942
622	cf::override;	943	cf::override;
623	},	944	},
624	);	945	);
625		946
626	sub register {
627	my ($base, $pkg) = @_;
628
629	#TODO
630	}
631
632	sub load_extension {	947	sub load_extension {
633	my ($path) = @_;	948	my ($path) = @_;
634		949
635	$path =~ /([^\/\\]+)\.ext$/ or die "$path";	950	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
636	my $base = $1;	951	my $base = $1;
637	my $pkg = $1;	952	my $pkg = $1;
638	$pkg =~ s/[^[:word:]]/_/g;	953	$pkg =~ s/[^[:word:]]/_/g;
639	$pkg = "ext::$pkg";	954	$pkg = "ext::$pkg";
640		955
641	warn "loading '$path' into '$pkg'\n";	956	warn "... loading '$path' into '$pkg'\n";
642		957
643	open my $fh, "<:utf8", $path	958	open my $fh, "<:utf8", $path
644	or die "$path: $!";	959	or die "$path: $!";
645		960
646	my $source =	961	my $source =
647	"package $pkg; use strict; use utf8;\n"	962	"package $pkg; use strict; use utf8;\n"
648	. "#line 1 \"$path\"\n{\n"	963	. "#line 1 \"$path\"\n{\n"
649	. (do { local $/; <$fh> })	964	. (do { local $/; <$fh> })
650	. "\n};\n1";	965	. "\n};\n1";
651		966
652	eval $source	967	unless (eval $source) {
653	or die $@ ? "$path: $@\n"	968	my $msg = $@ ? "$path: $@\n"
654	: "extension disabled.\n";	969	: "extension disabled.\n";
655		970	if ($source =~ /^#!.*perl.*#.*MANDATORY/m) { # ugly match
656	push @exts, $pkg;	971	warn $@;
657	$ext_pkg{$base} = $pkg;	972	warn "mandatory extension failed to load, exiting.\n";
658		973	exit 1;
659	# no strict 'refs';	974	}
660	# @{"$pkg\::ISA"} = ext::;	975	die $@;
661
662	register $base, $pkg;
663	}
664
665	sub unload_extension {
666	my ($pkg) = @_;
667
668	warn "removing extension $pkg\n";
669
670	# remove hooks
671	#TODO
672	# for my $idx (0 .. $#PLUGIN_EVENT) {
673	# delete $hook[$idx]{$pkg};
674	# }	976	}
675		977
676	# remove commands	978	push @EXTS, $pkg;
677	for my $name (keys %COMMAND) {
678	my @cb = grep $_->[0] ne $pkg, @{ $COMMAND{$name} };
679
680	if (@cb) {
681	$COMMAND{$name} = \@cb;
682	} else {
683	delete $COMMAND{$name};
684	}
685	}
686
687	# remove extcmds
688	for my $name (grep $EXTCMD{$_}[1] eq $pkg, keys %EXTCMD) {
689	delete $EXTCMD{$name};
690	}
691
692	if (my $cb = $pkg->can ("unload")) {
693	eval {
694	$cb->($pkg);
695	1
696	} or warn "$pkg unloaded, but with errors: $@";
697	}
698
699	Symbol::delete_package $pkg;
700	}	979	}
701		980
702	sub load_extensions {	981	sub load_extensions {
703	for my $ext (<$LIBDIR/*.ext>) {	982	for my $ext (<$LIBDIR/*.ext>) {
704	next unless -r $ext;	983	next unless -r $ext;
…		…
708	} or warn "$ext not loaded: $@";	987	} or warn "$ext not loaded: $@";
709	}	988	}
710	}	989	}
711		990
712	#############################################################################	991	#############################################################################
713	# load/save/clean perl data associated with a map
714		992
715	*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	$self
		1587	}
		1588
		1589	# find and load all maps in the 3x3 area around a map
		1590	sub load_diag {
716	my ($map) = @_;	1591	my ($map) = @_;
717		1592
718	my $path = $map->tmpname;	1593	my @diag; # diagonal neighbours
719	defined $path or return;
720		1594
721	unlink "$path.pst";	1595	for (0 .. 3) {
722	};	1596	my $neigh = $map->tile_path ($_)
		1597	or next;
		1598	$neigh = find $neigh, $map
		1599	or next;
		1600	$neigh->load;
723		1601
724	cf::map->attach (prio => -10000, package => cf::mapsupport::);	1602	push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh],
		1603	[$neigh->tile_path (($_ + 1) % 4), $neigh];
		1604	}
725		1605
726	#############################################################################	1606	for (@diag) {
727	# load/save perl data associated with player->ob objects	1607	my $neigh = find @$_
728		1608	or next;
729	sub all_objects(@) {	1609	$neigh->load;
730	@_, map all_objects ($_->inv), @_	1610	}
731	}	1611	}
732		1612
733	# TODO: compatibility cruft, remove when no longer needed	1613	sub find_sync {
734	cf::player->attach (	1614	my ($path, $origin) = @_;
735	on_load => sub {
736	my ($pl, $path) = @_;
737		1615
738	for my $o (all_objects $pl->ob) {	1616	cf::sync_job { find $path, $origin }
739	if (my $value = $o->get_ob_key_value ("_perl_data")) {	1617	}
740	$o->set_ob_key_value ("_perl_data");
741		1618
742	%$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};
743	}	1646	}
744	}	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);
745	},	1682	}
746	);	1683	}
747		1684
748	#############################################################################	1685	sub swap_out {
		1686	my ($self) = @_;
749		1687
750	=head2 CORE EXTENSIONS	1688	# save first because save cedes
		1689	$self->save;
751		1690
752	Functions and methods that extend core crossfire objects.	1691	my $lock = cf::lock_acquire "map_data:" . $self->path;
753		1692
754	=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;
755		1803
756	=over 4	1804	=over 4
757		1805
758	=item cf::player::exists $login	1806	=item $ob->inv_recursive
759		1807
760	Returns true when the given account exists.	1808	Returns the inventory of the object _and_ their inventories, recursively.
761		1809
762	=cut	1810	=cut
763		1811
764	sub cf::player::exists($) {	1812	sub inv_recursive_;
765	cf::player::find $_[0]	1813	sub inv_recursive_ {
766	or -f sprintf "%s/%s/%s/%s.pl", cf::localdir, cf::playerdir, ($_[0]) x 2;	1814	map { $_, inv_recursive_ $_->inv } @_
767	}	1815	}
768		1816
769	=item $player->ext_reply ($msgid, $msgtype, %msg)	1817	sub inv_recursive {
770		1818	inv_recursive_ inv $_[0]
771	Sends an ext reply to the player.
772
773	=cut
774
775	sub cf::player::ext_reply($$$%) {
776	my ($self, $id, %msg) = @_;
777
778	$msg{msgid} = $id;
779
780	$self->send ("ext " . to_json \%msg);
781	}	1819	}
		1820
		1821	package cf;
782		1822
783	=back	1823	=back
784		1824
785	=head3 cf::object::player	1825	=head3 cf::object::player
786		1826
…		…
824	(ref $cf::CFG{"may_$access"}	1864	(ref $cf::CFG{"may_$access"}
825	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}	1865	? scalar grep $self->name eq $_, @{$cf::CFG{"may_$access"}}
826	: $cf::CFG{"may_$access"})	1866	: $cf::CFG{"may_$access"})
827	}	1867	}
828		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;
		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	my $link_pos = delete $self->{_link_pos};
		1916
		1917	unless ($map) {
		1918	# restore original map position
		1919	($map, $x, $y) = @{ $link_pos || [] };
		1920	$map = cf::map::find $map;
		1921
		1922	unless ($map) {
		1923	($map, $x, $y) = @$EMERGENCY_POSITION;
		1924	$map = cf::map::find $map
		1925	or die "FATAL: cannot load emergency map\n";
		1926	}
		1927	}
		1928
		1929	($x, $y) = (-1, -1)
		1930	unless (defined $x) && (defined $y);
		1931
		1932	# use -1 or undef as default coordinates, not 0, 0
		1933	($x, $y) = ($map->enter_x, $map->enter_y)
		1934	if $x <=0 && $y <= 0;
		1935
		1936	$map->load;
		1937	$map->load_diag;
		1938
		1939	return unless $self->contr->active;
		1940	$self->activate_recursive;
		1941
		1942	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
		1943	$self->enter_map ($map, $x, $y);
		1944	}
		1945
		1946	cf::player->attach (
		1947	on_logout => sub {
		1948	my ($pl) = @_;
		1949
		1950	# abort map switching before logout
		1951	if ($pl->ob->{_link_pos}) {
		1952	cf::sync_job {
		1953	$pl->ob->leave_link
		1954	};
		1955	}
		1956	},
		1957	on_login => sub {
		1958	my ($pl) = @_;
		1959
		1960	# try to abort aborted map switching on player login :)
		1961	# should happen only on crashes
		1962	if ($pl->ob->{_link_pos}) {
		1963	$pl->ob->enter_link;
		1964	(async {
		1965	$pl->ob->reply (undef,
		1966	"There was an internal problem at your last logout, "
		1967	. "the server will try to bring you to your intended destination in a second.",
		1968	cf::NDI_RED);
		1969	# we need this sleep as the login has a concurrent enter_exit running
		1970	# and this sleep increases chances of the player not ending up in scorn
		1971	Coro::Timer::sleep 1;
		1972	$pl->ob->leave_link;
		1973	})->prio (2);
		1974	}
		1975	},
		1976	);
		1977
		1978	=item $player_object->goto ($path, $x, $y)
		1979
		1980	=cut
		1981
		1982	sub cf::object::player::goto {
		1983	my ($self, $path, $x, $y) = @_;
		1984
		1985	$self->enter_link;
		1986
		1987	(async {
		1988	my $map = eval {
		1989	my $map = cf::map::find $path;
		1990	$map = $map->customise_for ($self) if $map;
		1991	$map
		1992	} or
		1993	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE | cf::NDI_RED);
		1994
		1995	$self->leave_link ($map, $x, $y);
		1996	})->prio (1);
		1997	}
		1998
		1999	=item $player_object->enter_exit ($exit_object)
		2000
		2001	=cut
		2002
		2003	sub parse_random_map_params {
		2004	my ($spec) = @_;
		2005
		2006	my $rmp = { # defaults
		2007	xsize => (cf::rndm 15, 40),
		2008	ysize => (cf::rndm 15, 40),
		2009	symmetry => (cf::rndm 1, cf::SYMMETRY_XY),
		2010	#layout => string,
		2011	};
		2012
		2013	for (split /\n/, $spec) {
		2014	my ($k, $v) = split /\s+/, $_, 2;
		2015
		2016	$rmp->{lc $k} = $v if (length $k) && (length $v);
		2017	}
		2018
		2019	$rmp
		2020	}
		2021
		2022	sub prepare_random_map {
		2023	my ($exit) = @_;
		2024
		2025	my $guard = cf::lock_acquire "exit_prepare:$exit";
		2026
		2027	# all this does is basically replace the /! path by
		2028	# a new random map path (?random/...) with a seed
		2029	# that depends on the exit object
		2030
		2031	my $rmp = parse_random_map_params $exit->msg;
		2032
		2033	if ($exit->map) {
		2034	$rmp->{region} = $exit->region->name;
		2035	$rmp->{origin_map} = $exit->map->path;
		2036	$rmp->{origin_x} = $exit->x;
		2037	$rmp->{origin_y} = $exit->y;
		2038	}
		2039
		2040	$rmp->{random_seed} ||= $exit->random_seed;
		2041
		2042	my $data = cf::to_json $rmp;
		2043	my $md5 = Digest::MD5::md5_hex $data;
		2044	my $meta = "$RANDOMDIR/$md5.meta";
		2045
		2046	if (my $fh = aio_open "$meta~", O_WRONLY | O_CREAT, 0666) {
		2047	aio_write $fh, 0, (length $data), $data, 0;
		2048	undef $fh;
		2049	aio_rename "$meta~", $meta;
		2050
		2051	$exit->slaying ("?random/$md5");
		2052	$exit->msg (undef);
		2053	}
		2054	}
		2055
		2056	sub cf::object::player::enter_exit {
		2057	my ($self, $exit) = @_;
		2058
		2059	return unless $self->type == cf::PLAYER;
		2060
		2061	if ($exit->slaying eq "/!") {
		2062	#TODO: this should de-fi-ni-te-ly not be a sync-job
		2063	# the problem is that $exit might not survive long enough
		2064	# so it needs to be done right now, right here
		2065	cf::sync_job { prepare_random_map $exit };
		2066	}
		2067
		2068	my $slaying = cf::map::normalise $exit->slaying, $exit->map && $exit->map->path;
		2069	my $hp = $exit->stats->hp;
		2070	my $sp = $exit->stats->sp;
		2071
		2072	$self->enter_link;
		2073
		2074	(async {
		2075	$self->deactivate_recursive; # just to be sure
		2076	unless (eval {
		2077	$self->goto ($slaying, $hp, $sp);
		2078
		2079	1;
		2080	}) {
		2081	$self->message ("Something went wrong deep within the crossfire server. "
		2082	. "I'll try to bring you back to the map you were before. "
		2083	. "Please report this to the dungeon master!",
		2084	cf::NDI_UNIQUE | cf::NDI_RED);
		2085
		2086	warn "ERROR in enter_exit: $@";
		2087	$self->leave_link;
		2088	}
		2089	})->prio (1);
		2090	}
		2091
829	=head3 cf::client	2092	=head3 cf::client
830		2093
831	=over 4	2094	=over 4
832		2095
833	=item $client->send_drawinfo ($text, $flags)	2096	=item $client->send_drawinfo ($text, $flags)
…		…
839		2102
840	sub cf::client::send_drawinfo {	2103	sub cf::client::send_drawinfo {
841	my ($self, $text, $flags) = @_;	2104	my ($self, $text, $flags) = @_;
842		2105
843	utf8::encode $text;	2106	utf8::encode $text;
844	$self->send_packet (sprintf "drawinfo %d %s", $flags, $text);	2107	$self->send_packet (sprintf "drawinfo %d %s", $flags || cf::NDI_BLACK, $text);
845	}	2108	}
846		2109
		2110	=item $client->ext_event ($type, %msg)
		2111
		2112	Sends an exti event to the client.
		2113
		2114	=cut
		2115
		2116	sub cf::client::ext_event($$%) {
		2117	my ($self, $type, %msg) = @_;
		2118
		2119	$msg{msgtype} = "event_$type";
		2120	$self->send_packet ("ext " . cf::to_json \%msg);
		2121	}
847		2122
848	=item $success = $client->query ($flags, "text", \&cb)	2123	=item $success = $client->query ($flags, "text", \&cb)
849		2124
850	Queues a query to the client, calling the given callback with	2125	Queues a query to the client, calling the given callback with
851	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,	2126	the reply text on a reply. flags can be C<cf::CS_QUERY_YESNO>,
…		…
876	on_reply => sub {	2151	on_reply => sub {
877	my ($ns, $msg) = @_;	2152	my ($ns, $msg) = @_;
878		2153
879	# this weird shuffling is so that direct followup queries	2154	# this weird shuffling is so that direct followup queries
880	# get handled first	2155	# get handled first
881	my $queue = delete $ns->{query_queue};	2156	my $queue = delete $ns->{query_queue}
		2157	or return; # be conservative, not sure how that can happen, but we saw a crash here
882		2158
883	(shift @$queue)->[1]->($msg);	2159	(shift @$queue)->[1]->($msg);
		2160	return unless $ns->valid; # temporary(?) workaround for callback destroying socket
884		2161
885	push @{ $ns->{query_queue} }, @$queue;	2162	push @{ $ns->{query_queue} }, @$queue;
886		2163
887	if (@{ $ns->{query_queue} } == @$queue) {	2164	if (@{ $ns->{query_queue} } == @$queue) {
888	if (@$queue) {	2165	if (@$queue) {
889	$ns->send_packet ($ns->{query_queue}[0][0]);	2166	$ns->send_packet ($ns->{query_queue}[0][0]);
890	} else {	2167	} else {
891	$ns->state (ST_PLAYING);	2168	$ns->state (ST_PLAYING) if $ns->state == ST_CUSTOM;
892	}	2169	}
893	}	2170	}
894	},	2171	},
895	);	2172	);
896		2173
897	=item $client->coro (\&cb)	2174	=item $client->async (\&cb)
898		2175
899	Create a new coroutine, running the specified callback. The coroutine will	2176	Create a new coroutine, running the specified callback. The coroutine will
900	be automatically cancelled when the client gets destroyed (e.g. on logout,	2177	be automatically cancelled when the client gets destroyed (e.g. on logout,
901	or loss of connection).	2178	or loss of connection).
902		2179
903	=cut	2180	=cut
904		2181
905	sub cf::client::coro {	2182	sub cf::client::async {
906	my ($self, $cb) = @_;	2183	my ($self, $cb) = @_;
907		2184
908	my $coro; $coro = async {	2185	my $coro = &Coro::async ($cb);
909	eval {	2186
910	$cb->();	2187	$coro->on_destroy (sub {
911	};
912	warn $@ if $@;
913	warn "cancel myself\n";#d#
914	delete $self->{_coro}{$coro+0};	2188	delete $self->{_coro}{$coro+0};
915	};	2189	});
916		2190
917	$self->{_coro}{$coro+0} = $coro;	2191	$self->{_coro}{$coro+0} = $coro;
		2192
		2193	$coro
918	}	2194	}
919		2195
920	cf::client->attach (	2196	cf::client->attach (
921	on_destroy => sub {	2197	on_destroy => sub {
922	my ($ns) = @_;	2198	my ($ns) = @_;
923		2199
924	warn "cancel $_" for values %{ $ns->{_coro} || {} };#d#
925	$_->cancel for values %{ $ns->{_coro} || {} };	2200	$_->cancel for values %{ (delete $ns->{_coro}) || {} };
926	},	2201	},
927	);	2202	);
928		2203
929	=back	2204	=back
930		2205
…		…
948		2223
949	# here we export the classes and methods available to script code	2224	# here we export the classes and methods available to script code
950		2225
951	=pod	2226	=pod
952		2227
953	The following fucntions and emthods are available within a safe environment:	2228	The following functions and methods are available within a safe environment:
954		2229
955	cf::object contr pay_amount pay_player map	2230	cf::object contr pay_amount pay_player map
956	cf::object::player player	2231	cf::object::player player
957	cf::player peaceful	2232	cf::player peaceful
958	cf::map trigger	2233	cf::map trigger
…		…
1043	#############################################################################	2318	#############################################################################
1044		2319
1045	=head2 EXTENSION DATABASE SUPPORT	2320	=head2 EXTENSION DATABASE SUPPORT
1046		2321
1047	Crossfire maintains a very simple database for extension use. It can	2322	Crossfire maintains a very simple database for extension use. It can
1048	currently store anything that can be serialised using Storable, which	2323	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
1049	excludes objects.	2324	convert to/from binary).
1050		2325
1051	The parameter C<$family> should best start with the name of the extension	2326	The parameter C<$family> should best start with the name of the extension
1052	using it, it should be unique.	2327	using it, it should be unique.
1053		2328
1054	=over 4	2329	=over 4
1055		2330
1056	=item $hashref = cf::db_get $family
1057
1058	Return a hashref for use by the extension C<$family>, which can be
1059	modified. After modifications, you have to call C<cf::db_dirty> or
1060	C<cf::db_sync>.
1061
1062	=item $value = cf::db_get $family => $key	2331	=item $value = cf::db_get $family => $key
1063		2332
1064	Returns a single value from the database	2333	Returns a single value from the database.
1065
1066	=item cf::db_put $family => $hashref
1067
1068	Stores the given family hashref into the database. Updates are delayed, if
1069	you want the data to be synced to disk immediately, use C<cf::db_sync>.
1070		2334
1071	=item cf::db_put $family => $key => $value	2335	=item cf::db_put $family => $key => $value
1072		2336
1073	Stores the given C<$value> in the family hash. Updates are delayed, if you	2337	Stores the given C<$value> in the family.
1074	want the data to be synced to disk immediately, use C<cf::db_sync>.
1075
1076	=item cf::db_dirty
1077
1078	Marks the database as dirty, to be updated at a later time.
1079
1080	=item cf::db_sync
1081
1082	Immediately write the database to disk I<if it is dirty>.
1083		2338
1084	=cut	2339	=cut
1085		2340
1086	our $DB;	2341	our $DB;
1087		2342
1088	{	2343	sub db_init {
1089	my $path = cf::localdir . "/database.pst";	2344	unless ($DB) {
		2345	$DB = BDB::db_create $DB_ENV;
1090		2346
1091	sub db_load() {	2347	cf::sync_job {
1092	warn "loading database $path\n";#d# remove later	2348	eval {
1093	$DB = stat $path ? Storable::retrieve $path : { };	2349	$DB->set_flags (BDB::CHKSUM);
1094	}
1095		2350
1096	my $pid;	2351	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
1097		2352	BDB::CREATE | BDB::AUTO_COMMIT, 0666;
1098	sub db_save() {	2353	cf::cleanup "db_open(db): $!" if $!;
1099	warn "saving database $path\n";#d# remove later	2354	};
1100	waitpid $pid, 0 if $pid;	2355	cf::cleanup "db_open(db): $@" if $@;
1101	if (0 == ($pid = fork)) {
1102	$DB->{_meta}{version} = 1;
1103	Storable::nstore $DB, "$path~";
1104	rename "$path~", $path;
1105	cf::_exit 0 if defined $pid;
1106	}	2356	};
1107	}
1108
1109	my $dirty;
1110
1111	sub db_sync() {
1112	db_save if $dirty;
1113	undef $dirty;
1114	}
1115
1116	my $idle = Event->idle (min => $TICK * 2.8, max => 10, repeat => 0, data => WF_AUTOCANCEL, cb => sub {
1117	db_sync;
1118	});	2357	}
		2358	}
1119		2359
1120	sub db_dirty() {
1121	$dirty = 1;
1122	$idle->start;
1123	}
1124
1125	sub db_get($;$) {	2360	sub db_get($$) {
1126	@_ >= 2	2361	my $key = "$_[0]/$_[1]";
1127	? $DB->{$_[0]}{$_[1]}
1128	: ($DB->{$_[0]} ||= { })
1129	}
1130		2362
		2363	cf::sync_job {
		2364	BDB::db_get $DB, undef, $key, my $data;
		2365
		2366	$! ? ()
		2367	: $data
		2368	}
		2369	}
		2370
1131	sub db_put($$;$) {	2371	sub db_put($$$) {
1132	if (@_ >= 3) {	2372	BDB::dbreq_pri 4;
1133	$DB->{$_[0]}{$_[1]} = $_[2];	2373	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
1134	} else {	2374	}
1135	$DB->{$_[0]} = $_[1];
1136	}
1137	db_dirty;
1138	}
1139		2375
1140	cf::global->attach (	2376	=item cf::cache $id => [$paths...], $processversion => $process
1141	prio => 10000,	2377
1142	on_cleanup => sub {	2378	Generic caching function that returns the value of the resource $id,
1143	db_sync;	2379	caching and regenerating as required.
		2380
		2381	This function can block.
		2382
		2383	=cut
		2384
		2385	sub cache {
		2386	my ($id, $src, $processversion, $process) = @_;
		2387
		2388	my $meta =
		2389	join "\x00",
		2390	$processversion,
		2391	map {
		2392	aio_stat $_
		2393	and Carp::croak "$_: $!";
		2394
		2395	($_, (stat _)[7,9])
		2396	} @$src;
		2397
		2398	my $dbmeta = db_get cache => "$id/meta";
		2399	if ($dbmeta ne $meta) {
		2400	# changed, we may need to process
		2401
		2402	my @data;
		2403	my $md5;
		2404
		2405	for (0 .. $#$src) {
		2406	0 <= aio_load $src->[$_], $data[$_]
		2407	or Carp::croak "$src->[$_]: $!";
1144	},	2408	}
1145	);	2409
		2410	# if processing is expensive, check
		2411	# checksum first
		2412	if (1) {
		2413	$md5 =
		2414	join "\x00",
		2415	$processversion,
		2416	map {
		2417	Coro::cede;
		2418	($src->[$_], Digest::MD5::md5_hex $data[$_])
		2419	} 0.. $#$src;
		2420
		2421
		2422	my $dbmd5 = db_get cache => "$id/md5";
		2423	if ($dbmd5 eq $md5) {
		2424	db_put cache => "$id/meta", $meta;
		2425
		2426	return db_get cache => "$id/data";
		2427	}
		2428	}
		2429
		2430	my $t1 = Time::HiRes::time;
		2431	my $data = $process->(\@data);
		2432	my $t2 = Time::HiRes::time;
		2433
		2434	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		2435
		2436	db_put cache => "$id/data", $data;
		2437	db_put cache => "$id/md5" , $md5;
		2438	db_put cache => "$id/meta", $meta;
		2439
		2440	return $data;
		2441	}
		2442
		2443	db_get cache => "$id/data"
1146	}	2444	}
		2445
		2446	=item fork_call { }, $args
		2447
		2448	Executes the given code block with the given arguments in a seperate
		2449	process, returning the results. Everything must be serialisable with
		2450	Coro::Storable. May, of course, block. Note that the executed sub may
		2451	never block itself or use any form of Event handling.
		2452
		2453	=cut
		2454
		2455	sub fork_call(&@) {
		2456	my ($cb, @args) = @_;
		2457
		2458	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
		2459	# or die "socketpair: $!";
		2460	pipe my $fh1, my $fh2
		2461	or die "pipe: $!";
		2462
		2463	if (my $pid = fork) {
		2464	close $fh2;
		2465
		2466	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
		2467	$res = Coro::Storable::thaw $res;
		2468
		2469	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
		2470
		2471	die $$res unless "ARRAY" eq ref $res;
		2472
		2473	return wantarray ? @$res : $res->[-1];
		2474	} else {
		2475	reset_signals;
		2476	local $SIG{__WARN__};
		2477	local $SIG{__DIE__};
		2478	eval {
		2479	close $fh1;
		2480
		2481	my @res = eval { $cb->(@args) };
		2482	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		2483	};
		2484
		2485	warn $@ if $@;
		2486	_exit 0;
		2487	}
		2488	}
		2489
		2490
1147		2491
1148	#############################################################################	2492	#############################################################################
1149	# the server's main()	2493	# the server's init and main functions
		2494
		2495	sub load_facedata($) {
		2496	my ($path) = @_;
		2497
		2498	warn "loading facedata from $path\n";
		2499
		2500	my $facedata;
		2501	0 < aio_load $path, $facedata
		2502	or die "$path: $!";
		2503
		2504	$facedata = Coro::Storable::thaw $facedata;
		2505
		2506	$facedata->{version} == 2
		2507	or cf::cleanup "$path: version mismatch, cannot proceed.";
		2508
		2509	{
		2510	my $faces = $facedata->{faceinfo};
		2511
		2512	while (my ($face, $info) = each %$faces) {
		2513	my $idx = (cf::face::find $face) || cf::face::alloc $face;
		2514	cf::face::set $idx, $info->{visibility}, $info->{magicmap};
		2515	cf::face::set_data $idx, 0, $info->{data32}, $info->{chksum32};
		2516	cf::face::set_data $idx, 1, $info->{data64}, $info->{chksum64};
		2517	Coro::cede;
		2518	}
		2519
		2520	while (my ($face, $info) = each %$faces) {
		2521	next unless $info->{smooth};
		2522	my $idx = cf::face::find $face
		2523	or next;
		2524	if (my $smooth = cf::face::find $info->{smooth}) {
		2525	cf::face::set_smooth $idx, $smooth, $info->{smoothlevel};
		2526	} else {
		2527	warn "smooth face '$info->{smooth}' not found for face '$face'";
		2528	}
		2529	Coro::cede;
		2530	}
		2531	}
		2532
		2533	{
		2534	my $anims = $facedata->{animinfo};
		2535
		2536	while (my ($anim, $info) = each %$anims) {
		2537	cf::anim::set $anim, $info->{frames}, $info->{facings};
		2538	Coro::cede;
		2539	}
		2540
		2541	cf::anim::invalidate_all; # d'oh
		2542	}
		2543
		2544	1
		2545	}
		2546
		2547	sub reload_regions {
		2548	load_resource_file "$MAPDIR/regions"
		2549	or die "unable to load regions file\n";
		2550	}
		2551
		2552	sub reload_facedata {
		2553	load_facedata "$DATADIR/facedata"
		2554	or die "unable to load facedata\n";
		2555	}
		2556
		2557	sub reload_archetypes {
		2558	load_resource_file "$DATADIR/archetypes"
		2559	or die "unable to load archetypes\n";
		2560	}
		2561
		2562	sub reload_treasures {
		2563	load_resource_file "$DATADIR/treasures"
		2564	or die "unable to load treasurelists\n";
		2565	}
		2566
		2567	sub reload_resources {
		2568	warn "reloading resource files...\n";
		2569
		2570	reload_regions;
		2571	reload_facedata;
		2572	reload_archetypes;
		2573	reload_treasures;
		2574
		2575	warn "finished reloading resource files\n";
		2576	}
		2577
		2578	sub init {
		2579	reload_resources;
		2580	}
1150		2581
1151	sub cfg_load {	2582	sub cfg_load {
1152	open my $fh, "<:utf8", cf::confdir . "/config"	2583	open my $fh, "<:utf8", "$CONFDIR/config"
1153	or return;	2584	or return;
1154		2585
1155	local $/;	2586	local $/;
1156	*CFG = YAML::Syck::Load <$fh>;	2587	*CFG = YAML::Syck::Load <$fh>;
		2588
		2589	$EMERGENCY_POSITION = $CFG{emergency_position} || ["/world/world_105_115", 5, 37];
		2590
		2591	$cf::map::MAX_RESET = $CFG{map_max_reset} if exists $CFG{map_max_reset};
		2592	$cf::map::DEFAULT_RESET = $CFG{map_default_reset} if exists $CFG{map_default_reset};
		2593
		2594	if (exists $CFG{mlockall}) {
		2595	eval {
		2596	$CFG{mlockall} ? eval "mlockall()" : eval "munlockall()"
		2597	and die "WARNING: m(un)lockall failed: $!\n";
		2598	};
		2599	warn $@ if $@;
		2600	}
1157	}	2601	}
1158		2602
1159	sub main {	2603	sub main {
		2604	# we must not ever block the main coroutine
		2605	local $Coro::idle = sub {
		2606	Carp::cluck "FATAL: Coro::idle was called, major BUG, use cf::sync_job!\n";#d#
		2607	(async {
		2608	Event::one_event;
		2609	})->prio (Coro::PRIO_MAX);
		2610	};
		2611
1160	cfg_load;	2612	cfg_load;
1161	db_load;	2613	db_init;
1162	load_extensions;	2614	load_extensions;
		2615
		2616	$TICK_WATCHER->start;
1163	Event::loop;	2617	Event::loop;
1164	}	2618	}
1165		2619
1166	#############################################################################	2620	#############################################################################
1167	# initialisation	2621	# initialisation and cleanup
1168		2622
1169	sub _perl_reload(&) {	2623	# install some emergency cleanup handlers
		2624	BEGIN {
		2625	for my $signal (qw(INT HUP TERM)) {
		2626	Event->signal (
		2627	reentrant => 0,
		2628	data => WF_AUTOCANCEL,
		2629	signal => $signal,
		2630	prio => 0,
		2631	cb => sub {
		2632	cf::cleanup "SIG$signal";
		2633	},
		2634	);
		2635	}
		2636	}
		2637
		2638	sub emergency_save() {
		2639	my $freeze_guard = cf::freeze_mainloop;
		2640
		2641	warn "enter emergency perl save\n";
		2642
		2643	cf::sync_job {
		2644	# use a peculiar iteration method to avoid tripping on perl
		2645	# refcount bugs in for. also avoids problems with players
		2646	# and maps saved/destroyed asynchronously.
		2647	warn "begin emergency player save\n";
		2648	for my $login (keys %cf::PLAYER) {
		2649	my $pl = $cf::PLAYER{$login} or next;
		2650	$pl->valid or next;
		2651	$pl->save;
		2652	}
		2653	warn "end emergency player save\n";
		2654
		2655	warn "begin emergency map save\n";
		2656	for my $path (keys %cf::MAP) {
		2657	my $map = $cf::MAP{$path} or next;
		2658	$map->valid or next;
		2659	$map->save;
		2660	}
		2661	warn "end emergency map save\n";
		2662
		2663	warn "begin emergency database checkpoint\n";
		2664	BDB::db_env_txn_checkpoint $DB_ENV;
		2665	warn "end emergency database checkpoint\n";
		2666	};
		2667
		2668	warn "leave emergency perl save\n";
		2669	}
		2670
		2671	sub post_cleanup {
1170	my ($msg) = @_;	2672	my ($make_core) = @_;
1171		2673
1172	$msg->("reloading...");	2674	warn Carp::longmess "post_cleanup backtrace"
		2675	if $make_core;
		2676	}
1173		2677
1174	eval {	2678	sub do_reload_perl() {
1175	# cancel all watchers	2679	# can/must only be called in main
		2680	if ($Coro::current != $Coro::main) {
		2681	warn "can only reload from main coroutine";
		2682	return;
		2683	}
		2684
		2685	warn "reloading...";
		2686
		2687	warn "entering sync_job";
		2688
		2689	cf::sync_job {
		2690	cf::write_runtime; # external watchdog should not bark
		2691	cf::emergency_save;
		2692	cf::write_runtime; # external watchdog should not bark
		2693
		2694	warn "syncing database to disk";
		2695	BDB::db_env_txn_checkpoint $DB_ENV;
		2696
		2697	# if anything goes wrong in here, we should simply crash as we already saved
		2698
		2699	warn "cancelling all WF_AUTOCANCEL watchers";
1176	for (Event::all_watchers) {	2700	for (Event::all_watchers) {
1177	$_->cancel if $_->data & WF_AUTOCANCEL;	2701	$_->cancel if $_->data & WF_AUTOCANCEL;
1178	}	2702	}
1179		2703
1180	# unload all extensions	2704	warn "flushing outstanding aio requests";
1181	for (@exts) {	2705	for (;;) {
1182	$msg->("unloading <$_>");	2706	BDB::flush;
1183	unload_extension $_;	2707	IO::AIO::flush;
		2708	Coro::cede;
		2709	last unless IO::AIO::nreqs || BDB::nreqs;
		2710	warn "iterate...";
		2711	}
		2712
		2713	++$RELOAD;
		2714
		2715	warn "cancelling all extension coros";
		2716	$_->cancel for values %EXT_CORO;
		2717	%EXT_CORO = ();
		2718
		2719	warn "removing commands";
		2720	%COMMAND = ();
		2721
		2722	warn "removing ext commands";
		2723	%EXTCMD = ();
		2724
		2725	warn "unloading/nuking all extensions";
		2726	for my $pkg (@EXTS) {
		2727	warn "... unloading $pkg";
		2728
		2729	if (my $cb = $pkg->can ("unload")) {
		2730	eval {
		2731	$cb->($pkg);
		2732	1
		2733	} or warn "$pkg unloaded, but with errors: $@";
1184	}	2734	}
1185		2735
		2736	warn "... nuking $pkg";
		2737	Symbol::delete_package $pkg;
		2738	}
		2739
1186	# unload all modules loaded from $LIBDIR	2740	warn "unloading all perl modules loaded from $LIBDIR";
1187	while (my ($k, $v) = each %INC) {	2741	while (my ($k, $v) = each %INC) {
1188	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;	2742	next unless $v =~ /^\Q$LIBDIR\E\/.*\.pm$/;
1189		2743
1190	$msg->("removing <$k>");	2744	warn "... unloading $k";
1191	delete $INC{$k};	2745	delete $INC{$k};
1192		2746
1193	$k =~ s/\.pm$//;	2747	$k =~ s/\.pm$//;
1194	$k =~ s/\//::/g;	2748	$k =~ s/\//::/g;
1195		2749
…		…
1198	}	2752	}
1199		2753
1200	Symbol::delete_package $k;	2754	Symbol::delete_package $k;
1201	}	2755	}
1202		2756
1203	# sync database to disk
1204	cf::db_sync;
1205
1206	# get rid of safe::, as good as possible	2757	warn "getting rid of safe::, as good as possible";
1207	Symbol::delete_package "safe::$_"	2758	Symbol::delete_package "safe::$_"
1208	for qw(cf::object cf::object::player cf::player cf::map cf::party cf::region);	2759	for qw(cf::attachable cf::object cf::object::player cf::client cf::player cf::map cf::party cf::region);
1209		2760
1210	# remove register_script_function callbacks
1211	# TODO
1212
1213	# unload cf.pm "a bit"	2761	warn "unloading cf.pm \"a bit\"";
1214	delete $INC{"cf.pm"};	2762	delete $INC{"cf.pm"};
		2763	delete $INC{"cf/pod.pm"};
1215		2764
1216	# don't, removes xs symbols, too,	2765	# don't, removes xs symbols, too,
1217	# and global variables created in xs	2766	# and global variables created in xs
1218	#Symbol::delete_package __PACKAGE__;	2767	#Symbol::delete_package __PACKAGE__;
1219		2768
1220	# reload cf.pm	2769	warn "unload completed, starting to reload now";
		2770
1221	$msg->("reloading cf.pm");	2771	warn "reloading cf.pm";
1222	require cf;	2772	require cf;
		2773	cf::_connect_to_perl; # nominally unnecessary, but cannot hurt
1223		2774
1224	# load config and database again	2775	warn "loading config and database again";
1225	cf::cfg_load;	2776	cf::cfg_load;
1226	cf::db_load;
1227		2777
1228	# load extensions	2778	warn "loading extensions";
1229	$msg->("load extensions");
1230	cf::load_extensions;	2779	cf::load_extensions;
1231		2780
1232	# reattach attachments to objects	2781	warn "reattaching attachments to objects/players";
1233	$msg->("reattach");	2782	_global_reattach; # objects, sockets
1234	_global_reattach;	2783	warn "reattaching attachments to maps";
		2784	reattach $_ for values %MAP;
		2785	warn "reattaching attachments to players";
		2786	reattach $_ for values %PLAYER;
		2787
		2788	warn "leaving sync_job";
		2789
		2790	1
		2791	} or do {
		2792	warn $@;
		2793	warn "error while reloading, exiting.";
		2794	exit 1;
1235	};	2795	};
1236	$msg->($@) if $@;
1237		2796
1238	$msg->("reloaded");	2797	warn "reloaded";
1239	};	2798	};
1240		2799
1241	sub perl_reload() {	2800	our $RELOAD_WATCHER; # used only during reload
1242	_perl_reload {	2801
1243	warn $_[0];	2802	sub reload_perl() {
1244	print "$_[0]\n";	2803	# doing reload synchronously and two reloads happen back-to-back,
		2804	# coro crashes during coro_state_free->destroy here.
		2805
		2806	$RELOAD_WATCHER ||= Event->timer (
		2807	reentrant => 0,
		2808	after => 0,
		2809	data => WF_AUTOCANCEL,
		2810	cb => sub {
		2811	do_reload_perl;
		2812	undef $RELOAD_WATCHER;
		2813	},
1245	};	2814	);
1246	}	2815	}
1247		2816
1248	register "<global>", __PACKAGE__;
1249
1250	register_command "perl-reload" => sub {	2817	register_command "reload" => sub {
1251	my ($who, $arg) = @_;	2818	my ($who, $arg) = @_;
1252		2819
1253	if ($who->flag (FLAG_WIZ)) {	2820	if ($who->flag (FLAG_WIZ)) {
1254	_perl_reload {	2821	$who->message ("reloading server.");
1255	warn $_[0];	2822	async { reload_perl };
1256	$who->message ($_[0]);
1257	};
1258	}	2823	}
1259	};	2824	};
1260		2825
1261	unshift @INC, $LIBDIR;	2826	unshift @INC, $LIBDIR;
1262		2827
		2828	my $bug_warning = 0;
		2829
		2830	our @WAIT_FOR_TICK;
		2831	our @WAIT_FOR_TICK_BEGIN;
		2832
		2833	sub wait_for_tick {
		2834	return unless $TICK_WATCHER->is_active;
		2835	return if $Coro::current == $Coro::main;
		2836
		2837	my $signal = new Coro::Signal;
		2838	push @WAIT_FOR_TICK, $signal;
		2839	$signal->wait;
		2840	}
		2841
		2842	sub wait_for_tick_begin {
		2843	return unless $TICK_WATCHER->is_active;
		2844	return if $Coro::current == $Coro::main;
		2845
		2846	my $signal = new Coro::Signal;
		2847	push @WAIT_FOR_TICK_BEGIN, $signal;
		2848	$signal->wait;
		2849	}
		2850
1263	$TICK_WATCHER = Event->timer (	2851	$TICK_WATCHER = Event->timer (
		2852	reentrant => 0,
		2853	parked => 1,
1264	prio => 0,	2854	prio => 0,
1265	at => $NEXT_TICK || 1,	2855	at => $NEXT_TICK || $TICK,
1266	data => WF_AUTOCANCEL,	2856	data => WF_AUTOCANCEL,
1267	cb => sub {	2857	cb => sub {
		2858	if ($Coro::current != $Coro::main) {
		2859	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
		2860	unless ++$bug_warning > 10;
		2861	return;
		2862	}
		2863
		2864	$NOW = $tick_start = Event::time;
		2865
1268	cf::server_tick; # one server iteration	2866	cf::server_tick; # one server iteration
1269		2867
1270	my $NOW = Event::time;	2868	$RUNTIME += $TICK;
1271	$NEXT_TICK += $TICK;	2869	$NEXT_TICK += $TICK;
		2870
		2871	if ($NOW >= $NEXT_RUNTIME_WRITE) {
		2872	$NEXT_RUNTIME_WRITE = $NOW + 10;
		2873	Coro::async_pool {
		2874	write_runtime
		2875	or warn "ERROR: unable to write runtime file: $!";
		2876	};
		2877	}
		2878
		2879	# my $AFTER = Event::time;
		2880	# warn $AFTER - $NOW;#d#
		2881
		2882	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2883	$sig->send;
		2884	}
		2885	while (my $sig = shift @WAIT_FOR_TICK) {
		2886	$sig->send;
		2887	}
		2888
		2889	$NOW = Event::time;
1272		2890
1273	# if we are delayed by four ticks or more, skip them all	2891	# if we are delayed by four ticks or more, skip them all
1274	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;	2892	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
1275		2893
1276	$TICK_WATCHER->at ($NEXT_TICK);	2894	$TICK_WATCHER->at ($NEXT_TICK);
1277	$TICK_WATCHER->start;	2895	$TICK_WATCHER->start;
		2896
		2897	$LOAD = ($NOW - $tick_start) / $TICK;
		2898	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
		2899
		2900	_post_tick;
		2901
		2902
1278	},	2903	},
1279	);	2904	);
1280		2905
		2906	{
		2907	BDB::max_poll_time $TICK * 0.1;
		2908	$BDB_POLL_WATCHER = Event->io (
		2909	reentrant => 0,
		2910	fd => BDB::poll_fileno,
		2911	poll => 'r',
		2912	prio => 0,
		2913	data => WF_AUTOCANCEL,
		2914	cb => \&BDB::poll_cb,
		2915	);
		2916	BDB::min_parallel 8;
		2917
		2918	BDB::set_sync_prepare {
		2919	my $status;
		2920	my $current = $Coro::current;
		2921	(
		2922	sub {
		2923	$status = $!;
		2924	$current->ready; undef $current;
		2925	},
		2926	sub {
		2927	Coro::schedule while defined $current;
		2928	$! = $status;
		2929	},
		2930	)
		2931	};
		2932
		2933	unless ($DB_ENV) {
		2934	$DB_ENV = BDB::db_env_create;
		2935
		2936	cf::sync_job {
		2937	eval {
		2938	BDB::db_env_open
		2939	$DB_ENV,
		2940	$BDBDIR,
		2941	BDB::INIT_LOCK | BDB::INIT_LOG | BDB::INIT_MPOOL | BDB::INIT_TXN
		2942	| BDB::RECOVER | BDB::REGISTER | BDB::USE_ENVIRON | BDB::CREATE,
		2943	0666;
		2944
		2945	cf::cleanup "db_env_open($BDBDIR): $!" if $!;
		2946
		2947	$DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT | BDB::TXN_NOSYNC, 1);
		2948	$DB_ENV->set_lk_detect;
		2949	};
		2950
		2951	cf::cleanup "db_env_open(db): $@" if $@;
		2952	};
		2953	}
		2954	}
		2955
		2956	{
		2957	IO::AIO::min_parallel 8;
		2958
		2959	undef $Coro::AIO::WATCHER;
1281	IO::AIO::max_poll_time $TICK * 0.2;	2960	IO::AIO::max_poll_time $TICK * 0.1;
1282		2961	$AIO_POLL_WATCHER = Event->io (
1283	Event->io (fd => IO::AIO::poll_fileno,	2962	reentrant => 0,
1284	poll => 'r',
1285	prio => 5,
1286	data => WF_AUTOCANCEL,	2963	data => WF_AUTOCANCEL,
		2964	fd => IO::AIO::poll_fileno,
		2965	poll => 'r',
		2966	prio => 6,
1287	cb => \&IO::AIO::poll_cb);	2967	cb => \&IO::AIO::poll_cb,
		2968	);
		2969	}
		2970
		2971	my $_log_backtrace;
		2972
		2973	sub _log_backtrace {
		2974	my ($msg, @addr) = @_;
		2975
		2976	$msg =~ s/\n//;
		2977
		2978	# limit the # of concurrent backtraces
		2979	if ($_log_backtrace < 2) {
		2980	++$_log_backtrace;
		2981	async {
		2982	my @bt = fork_call {
		2983	@addr = map { sprintf "%x", $_ } @addr;
		2984	my $self = (-f "/proc/$$/exe") ? "/proc/$$/exe" : $^X;
		2985	open my $fh, "exec addr2line -C -f -i -e \Q$self\E @addr 2>&1 |"
		2986	or die "addr2line: $!";
		2987
		2988	my @funcs;
		2989	my @res = <$fh>;
		2990	chomp for @res;
		2991	while (@res) {
		2992	my ($func, $line) = splice @res, 0, 2, ();
		2993	push @funcs, "[$func] $line";
		2994	}
		2995
		2996	@funcs
		2997	};
		2998
		2999	LOG llevInfo, "[ABT] $msg\n";
		3000	LOG llevInfo, "[ABT] $_\n" for @bt;
		3001	--$_log_backtrace;
		3002	};
		3003	} else {
		3004	LOG llevInfo, "[ABT] $msg\n";
		3005	LOG llevInfo, "[ABT] [suppressed]\n";
		3006	}
		3007	}
		3008
		3009	# load additional modules
		3010	use cf::pod;
		3011
		3012	END { cf::emergency_save }
1288		3013
1289	1	3014	1
1290		3015

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