[ViewVC] Diff of: cvs/deliantra/server/lib/cf.pm

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.264 by root, Sun May 6 05:44:48 2007 UTC vs.
Revision 1.282 by elmex, Tue Jun 19 18:15:34 2007 UTC

…		…
90	our $LINK_MAP; # the special {link} map, which is always available	90	our $LINK_MAP; # the special {link} map, which is always available
91		91
92	# used to convert map paths into valid unix filenames by replacing / by ∕	92	# used to convert map paths into valid unix filenames by replacing / by ∕
93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons	93	our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
94		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 $tick_start; # for load detecting purposes
		98
95	binmode STDOUT;	99	binmode STDOUT;
96	binmode STDERR;	100	binmode STDERR;
97		101
98	# read virtual server time, if available	102	# read virtual server time, if available
99	unless ($RUNTIME \|\| !-e "$LOCALDIR/runtime") {	103	unless ($RUNTIME \|\| !-e "$LOCALDIR/runtime") {
…		…
139		143
140	=item $cf::TICK	144	=item $cf::TICK
141		145
142	The interval between server ticks, in seconds.	146	The interval between server ticks, in seconds.
143		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.
		157
144	=item %cf::CFG	158	=item %cf::CFG
145		159
146	Configuration for the server, loaded from C</etc/crossfire/config>, or	160	Configuration for the server, loaded from C</etc/crossfire/config>, or
147	from wherever your confdir points to.	161	from wherever your confdir points to.
148		162
…		…
173	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';	187	@safe::cf::global::ISA = @cf::global::ISA = 'cf::attachable';
174	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';	188	@safe::cf::object::ISA = @cf::object::ISA = 'cf::attachable';
175	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';	189	@safe::cf::player::ISA = @cf::player::ISA = 'cf::attachable';
176	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';	190	@safe::cf::client::ISA = @cf::client::ISA = 'cf::attachable';
177	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';	191	@safe::cf::map::ISA = @cf::map::ISA = 'cf::attachable';
		192	@safe::cf::arch::ISA = @cf::arch::ISA = 'cf::object';
178	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object';	193	@safe::cf::object::player::ISA = @cf::object::player::ISA = 'cf::object'; # not really true (yet)
179		194
180	# we bless all objects into (empty) derived classes to force a method lookup	195	# we bless all objects into (empty) derived classes to force a method lookup
181	# within the Safe compartment.	196	# within the Safe compartment.
182	for my $pkg (qw(	197	for my $pkg (qw(
183	cf::global cf::attachable	198	cf::global cf::attachable
…		…
191	}	206	}
192		207
193	$Event::DIED = sub {	208	$Event::DIED = sub {
194	warn "error in event callback: @_";	209	warn "error in event callback: @_";
195	};	210	};
		211
		212	#############################################################################
196		213
197	=head2 UTILITY FUNCTIONS	214	=head2 UTILITY FUNCTIONS
198		215
199	=over 4	216	=over 4
200		217
…		…
303		320
304	BEGIN { *async = \&Coro::async_pool }	321	BEGIN { *async = \&Coro::async_pool }
305		322
306	=item cf::sync_job { BLOCK }	323	=item cf::sync_job { BLOCK }
307		324
308	The design of crossfire+ requires that the main coro ($Coro::main) is	325	The design of Crossfire TRT requires that the main coroutine ($Coro::main)
309	always able to handle events or runnable, as crossfire+ is only partly	326	is always able to handle events or runnable, as Crossfire TRT is only
310	reentrant. Thus "blocking" it by e.g. waiting for I/O is not acceptable.	327	partly reentrant. Thus "blocking" it by e.g. waiting for I/O is not
		328	acceptable.
311		329
312	If it must be done, put the blocking parts into C<sync_job>. This will run	330	If it must be done, put the blocking parts into C<sync_job>. This will run
313	the given BLOCK in another coroutine while waiting for the result. The	331	the given BLOCK in another coroutine while waiting for the result. The
314	server will be frozen during this time, so the block should either finish	332	server will be frozen during this time, so the block should either finish
315	fast or be very important.	333	fast or be very important.
…		…
318		336
319	sub sync_job(&) {	337	sub sync_job(&) {
320	my ($job) = @_;	338	my ($job) = @_;
321		339
322	if ($Coro::current == $Coro::main) {	340	if ($Coro::current == $Coro::main) {
		341	my $time = Event::time;
		342
323	# this is the main coro, too bad, we have to block	343	# this is the main coro, too bad, we have to block
324	# till the operation succeeds, freezing the server :/	344	# till the operation succeeds, freezing the server :/
325		345
326	# TODO: use suspend/resume instead	346	# TODO: use suspend/resume instead
327	# (but this is cancel-safe)	347	# (but this is cancel-safe)
…		…
338		358
339	while ($busy) {	359	while ($busy) {
340	Coro::cede or Event::one_event;	360	Coro::cede or Event::one_event;
341	}	361	}
342		362
		363	$time = Event::time - $time;
		364
		365	LOG llevError \| logBacktrace, Carp::longmess "long sync job"
		366	if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
		367
		368	$tick_start += $time; # do not account sync jobs to server load
		369
343	wantarray ? @res : $res[0]	370	wantarray ? @res : $res[0]
344	} else {	371	} else {
345	# we are in another coroutine, how wonderful, everything just works	372	# we are in another coroutine, how wonderful, everything just works
346		373
347	$job->()	374	$job->()
…		…
366	$EXT_CORO{$coro+0} = $coro;	393	$EXT_CORO{$coro+0} = $coro;
367		394
368	$coro	395	$coro
369	}	396	}
370		397
371	sub write_runtime {	398	=item fork_call { }, $args
372	my $runtime = "$LOCALDIR/runtime";
373		399
374	# first touch the runtime file to show we are still running:	400	Executes the given code block with the given arguments in a seperate
375	# the fsync below can take a very very long time.	401	process, returning the results. Everything must be serialisable with
		402	Coro::Storable. May, of course, block. Note that the executed sub may
		403	never block itself or use any form of Event handling.
376		404
377	warn "touching runtime...\n";#d#	405	=cut
378	if (my $fh = aio_open $runtime, O_WRONLY, 0) {
379	utime undef, undef, $fh;
380	}
381		406
382	my $guard = cf::lock_acquire "write_runtime";	407	sub fork_call(&@) {
		408	my ($cb, @args) = @_;
383		409
384	warn "starting to write runtime...\n";#d#	410	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
385	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644	411	# or die "socketpair: $!";
386	or return;	412	pipe my $fh1, my $fh2
		413	or die "pipe: $!";
387		414
388	my $value = $cf::RUNTIME + 90 + 10;	415	if (my $pid = fork) {
389	# 10 is the runtime save interval, for a monotonic clock
390	# 60 allows for the watchdog to kill the server.
391
392	(aio_write $fh, 0, (length $value), $value, 0) <= 0
393	and return;
394
395	# always fsync - this file is important
396	aio_fsync $fh
397	and return;
398
399	# touch it again to show we are up-to-date
400	utime undef, undef, $fh;
401
402	close $fh	416	close $fh2;
403	or return;
404		417
405	aio_rename "$runtime~", $runtime	418	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
406	and return;	419	$res = Coro::Storable::thaw $res;
407		420
408	warn "... done writing runtime.\n";#d#	421	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
409		422
		423	die $$res unless "ARRAY" eq ref $res;
		424
		425	return wantarray ? @$res : $res->[-1];
		426	} else {
		427	reset_signals;
		428	local $SIG{__WARN__};
		429	local $SIG{__DIE__};
		430	eval {
		431	close $fh1;
		432
		433	my @res = eval { $cb->(@args) };
		434	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
		435	};
		436
		437	warn $@ if $@;
		438	_exit 0;
410	1	439	}
		440	}
		441
		442	=item $value = cf::db_get $family => $key
		443
		444	Returns a single value from the environment database.
		445
		446	=item cf::db_put $family => $key => $value
		447
		448	Stores the given C<$value> in the family. It can currently store binary
		449	data only (use Compress::LZF::sfreeze_cr/sthaw to convert to/from binary).
		450
		451	=cut
		452
		453	our $DB;
		454
		455	sub db_init {
		456	unless ($DB) {
		457	$DB = BDB::db_create $DB_ENV;
		458
		459	cf::sync_job {
		460	eval {
		461	$DB->set_flags (BDB::CHKSUM);
		462
		463	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
		464	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
		465	cf::cleanup "db_open(db): $!" if $!;
		466	};
		467	cf::cleanup "db_open(db): $@" if $@;
		468	};
		469	}
		470	}
		471
		472	sub db_get($$) {
		473	my $key = "$_[0]/$_[1]";
		474
		475	cf::sync_job {
		476	BDB::db_get $DB, undef, $key, my $data;
		477
		478	$! ? ()
		479	: $data
		480	}
		481	}
		482
		483	sub db_put($$$) {
		484	BDB::dbreq_pri 4;
		485	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
		486	}
		487
		488	=item cf::cache $id => [$paths...], $processversion => $process
		489
		490	Generic caching function that returns the value of the resource $id,
		491	caching and regenerating as required.
		492
		493	This function can block.
		494
		495	=cut
		496
		497	sub cache {
		498	my ($id, $src, $processversion, $process) = @_;
		499
		500	my $meta =
		501	join "\x00",
		502	$processversion,
		503	map {
		504	aio_stat $_
		505	and Carp::croak "$_: $!";
		506
		507	($_, (stat _)[7,9])
		508	} @$src;
		509
		510	my $dbmeta = db_get cache => "$id/meta";
		511	if ($dbmeta ne $meta) {
		512	# changed, we may need to process
		513
		514	my @data;
		515	my $md5;
		516
		517	for (0 .. $#$src) {
		518	0 <= aio_load $src->[$_], $data[$_]
		519	or Carp::croak "$src->[$_]: $!";
		520	}
		521
		522	# if processing is expensive, check
		523	# checksum first
		524	if (1) {
		525	$md5 =
		526	join "\x00",
		527	$processversion,
		528	map {
		529	Coro::cede;
		530	($src->[$_], Digest::MD5::md5_hex $data[$_])
		531	} 0.. $#$src;
		532
		533
		534	my $dbmd5 = db_get cache => "$id/md5";
		535	if ($dbmd5 eq $md5) {
		536	db_put cache => "$id/meta", $meta;
		537
		538	return db_get cache => "$id/data";
		539	}
		540	}
		541
		542	my $t1 = Time::HiRes::time;
		543	my $data = $process->(\@data);
		544	my $t2 = Time::HiRes::time;
		545
		546	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
		547
		548	db_put cache => "$id/data", $data;
		549	db_put cache => "$id/md5" , $md5;
		550	db_put cache => "$id/meta", $meta;
		551
		552	return $data;
		553	}
		554
		555	db_get cache => "$id/data"
411	}	556	}
412		557
413	=item cf::datalog type => key => value, ...	558	=item cf::datalog type => key => value, ...
414		559
415	Log a datalog packet of the given type with the given key-value pairs.	560	Log a datalog packet of the given type with the given key-value pairs.
…		…
433	attach callbacks/event handlers (a collection of which is called an "attachment")	578	attach callbacks/event handlers (a collection of which is called an "attachment")
434	to it. All such attachable objects support the following methods.	579	to it. All such attachable objects support the following methods.
435		580
436	In the following description, CLASS can be any of C<global>, C<object>	581	In the following description, CLASS can be any of C<global>, C<object>
437	C<player>, C<client> or C<map> (i.e. the attachable objects in	582	C<player>, C<client> or C<map> (i.e. the attachable objects in
438	crossfire+).	583	Crossfire TRT).
439		584
440	=over 4	585	=over 4
441		586
442	=item $attachable->attach ($attachment, key => $value...)	587	=item $attachable->attach ($attachment, key => $value...)
443		588
…		…
606	$registry = $CB_TYPE[$object_type] \|\|= [];	751	$registry = $CB_TYPE[$object_type] \|\|= [];
607		752
608	} elsif ($type eq "subtype") {	753	} elsif ($type eq "subtype") {
609	defined $object_type or Carp::croak "subtype specified without type";	754	defined $object_type or Carp::croak "subtype specified without type";
610	my $object_subtype = shift @arg;	755	my $object_subtype = shift @arg;
611	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_SUBTYPES] \|\|= [];	756	$registry = $CB_TYPE[$object_type + $object_subtype * NUM_TYPES] \|\|= [];
612		757
613	} elsif ($type eq "package") {	758	} elsif ($type eq "package") {
614	my $pkg = shift @arg;	759	my $pkg = shift @arg;
615		760
616	while (my ($name, $id) = each %cb_id) {	761	while (my ($name, $id) = each %cb_id) {
…		…
645	_attach $registry, $klass, @attach;	790	_attach $registry, $klass, @attach;
646	}	791	}
647		792
648	$obj->{$name} = \%arg;	793	$obj->{$name} = \%arg;
649	} else {	794	} else {
650	warn "object uses attachment '$name' that is not available, postponing.\n";	795	warn "object uses attachment '$name' which is not available, postponing.\n";
651	}	796	}
652		797
653	$obj->{_attachment}{$name} = undef;	798	$obj->{_attachment}{$name} = undef;
654	}	799	}
655		800
…		…
657	if (ref $_[0]) {	802	if (ref $_[0]) {
658	_object_attach @_;	803	_object_attach @_;
659	} else {	804	} else {
660	_attach shift->_attach_registry, @_;	805	_attach shift->_attach_registry, @_;
661	}	806	}
		807	_recalc_want;
662	};	808	};
663		809
664	# all those should be optimised	810	# all those should be optimised
665	sub cf::attachable::detach {	811	sub cf::attachable::detach {
666	my ($obj, $name) = @_;	812	my ($obj, $name) = @_;
…		…
669	delete $obj->{_attachment}{$name};	815	delete $obj->{_attachment}{$name};
670	reattach ($obj);	816	reattach ($obj);
671	} else {	817	} else {
672	Carp::croak "cannot, currently, detach class attachments";	818	Carp::croak "cannot, currently, detach class attachments";
673	}	819	}
		820	_recalc_want;
674	};	821	};
675		822
676	sub cf::attachable::attached {	823	sub cf::attachable::attached {
677	my ($obj, $name) = @_;	824	my ($obj, $name) = @_;
678		825
…		…
851	or return;	998	or return;
852	$av = eval { (Storable::thaw $av)->{objs} };	999	$av = eval { (Storable::thaw $av)->{objs} };
853	}	1000	}
854		1001
855	warn sprintf "loading %s (%d)\n",	1002	warn sprintf "loading %s (%d)\n",
856	$filename, length $data, scalar @{$av \|\| []};#d#	1003	$filename, length $data, scalar @{$av \|\| []};
857	return ($data, $av);	1004	return ($data, $av);
858	}	1005	}
		1006
		1007	=head2 COMMAND CALLBACKS
		1008
		1009	=over 4
		1010
		1011	=cut
859		1012
860	#############################################################################	1013	#############################################################################
861	# command handling &c	1014	# command handling &c
862		1015
863	=item cf::register_command $name => \&callback($ob,$args);	1016	=item cf::register_command $name => \&callback($ob,$args);
…		…
876	push @{ $COMMAND{$name} }, [$caller, $cb];	1029	push @{ $COMMAND{$name} }, [$caller, $cb];
877	}	1030	}
878		1031
879	=item cf::register_extcmd $name => \&callback($pl,$packet);	1032	=item cf::register_extcmd $name => \&callback($pl,$packet);
880		1033
881	Register a callbackf ro execution when the client sends an extcmd packet.	1034	Register a callback fro execution when the client sends an extcmd packet.
882		1035
883	If the callback returns something, it is sent back as if reply was being	1036	If the callback returns something, it is sent back as if reply was being
884	called.	1037	called.
885		1038
886	=cut	1039	=cut
…		…
921		1074
922	cf::override;	1075	cf::override;
923	},	1076	},
924	);	1077	);
925		1078
926	sub load_extension {
927	my ($path) = @_;
928
929	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
930	my $base = $1;
931	my $pkg = $1;
932	$pkg =~ s/[^[:word:]]/_/g;
933	$pkg = "ext::$pkg";
934
935	warn "... loading '$path' into '$pkg'\n";
936
937	open my $fh, "<:utf8", $path
938	or die "$path: $!";
939
940	my $source =
941	"package $pkg; use strict; use utf8;\n"
942	. "#line 1 \"$path\"\n{\n"
943	. (do { local $/; <$fh> })
944	. "\n};\n1";
945
946	unless (eval $source) {
947	my $msg = $@ ? "$path: $@\n"
948	: "extension disabled.\n";
949	if ($source =~ /^#!.perl.#.*MANDATORY/m) { # ugly match
950	warn $@;
951	warn "mandatory extension failed to load, exiting.\n";
952	exit 1;
953	}
954	die $@;
955	}
956
957	push @EXTS, $pkg;
958	}
959
960	sub load_extensions {	1079	sub load_extensions {
		1080	cf::sync_job {
		1081	my %todo;
		1082
961	for my $ext (<$LIBDIR/*.ext>) {	1083	for my $path (<$LIBDIR/*.ext>) {
962	next unless -r $ext;	1084	next unless -r $path;
963	eval {	1085
964	load_extension $ext;	1086	$path =~ /([^\/\\]+)\.ext$/ or die "$path";
		1087	my $base = $1;
		1088	my $pkg = $1;
		1089	$pkg =~ s/[^[:word:]]/_/g;
		1090	$pkg = "ext::$pkg";
		1091
		1092	open my $fh, "<:utf8", $path
		1093	or die "$path: $!";
		1094
		1095	my $source = do { local $/; <$fh> };
		1096
		1097	my %ext = (
		1098	path => $path,
		1099	base => $base,
		1100	pkg => $pkg,
		1101	);
		1102
		1103	$ext{meta} = { map { (split /=/, $_, 2)[0, 1] } split /\s+/, $1 }
		1104	if $source =~ /\A#!.?perl.?#\s(.)$/m;
		1105
		1106	$ext{source} =
		1107	"package $pkg; use strict; use utf8;\n"
		1108	. "#line 1 \"$path\"\n{\n"
		1109	. $source
		1110	. "\n};\n1";
		1111
		1112	$todo{$base} = \%ext;
		1113	}
		1114
		1115	my %done;
		1116	while (%todo) {
		1117	my $progress;
		1118
		1119	while (my ($k, $v) = each %todo) {
		1120	for (split /,\s*/, $v->{meta}{depends}) {
		1121	goto skip
		1122	unless exists $done{$_};
		1123	}
		1124
		1125	warn "... loading '$k' into '$v->{pkg}'\n";
		1126
		1127	unless (eval $v->{source}) {
		1128	my $msg = $@ ? "$v->{path}: $@\n"
		1129	: "$v->{base}: extension inactive.\n";
		1130
		1131	if (exists $v->{meta}{mandatory}) {
		1132	warn $msg;
		1133	warn "mandatory extension failed to load, exiting.\n";
		1134	exit 1;
		1135	}
		1136
		1137	warn $msg;
		1138	}
		1139
		1140	$done{$k} = delete $todo{$k};
		1141	push @EXTS, $v->{pkg};
		1142	$progress = 1;
965	1	1143	}
966	} or warn "$ext not loaded: $@";	1144
		1145	skip:
		1146	die "cannot load " . (join ", ", keys %todo) . ": unable to resolve dependencies\n"
		1147	unless $progress;
		1148	}
967	}	1149	};
968	}	1150	}
969		1151
970	#############################################################################	1152	#############################################################################
		1153
		1154	=back
971		1155
972	=head2 CORE EXTENSIONS	1156	=head2 CORE EXTENSIONS
973		1157
974	Functions and methods that extend core crossfire objects.	1158	Functions and methods that extend core crossfire objects.
975		1159
…		…
1199		1383
1200	package cf::region;	1384	package cf::region;
1201		1385
1202	=item cf::region::find_by_path $path	1386	=item cf::region::find_by_path $path
1203		1387
1204	Tries to decuce the probable region for a map knowing only its path.	1388	Tries to decuce the likely region for a map knowing only its path.
1205		1389
1206	=cut	1390	=cut
1207		1391
1208	sub find_by_path($) {	1392	sub find_by_path($) {
1209	my ($path) = @_;	1393	my ($path) = @_;
…		…
1283	my ($self, $merge) = @_;	1467	my ($self, $merge) = @_;
1284		1468
1285	# we have to keep some variables in memory intact	1469	# we have to keep some variables in memory intact
1286	local $self->{path};	1470	local $self->{path};
1287	local $self->{load_path};	1471	local $self->{load_path};
1288	local $self->{deny_save};
1289	local $self->{deny_reset};
1290		1472
1291	$self->SUPER::thawer_merge ($merge);	1473	$self->SUPER::thawer_merge ($merge);
1292	}	1474	}
1293		1475
1294	sub normalise {	1476	sub normalise {
…		…
1394		1576
1395	$_->change_map_light ($change)	1577	$_->change_map_light ($change)
1396	for grep $_->outdoor, values %cf::MAP;	1578	for grep $_->outdoor, values %cf::MAP;
1397	}	1579	}
1398		1580
		1581	sub decay_objects {
		1582	my ($self) = @_;
		1583
		1584	return if $self->{deny_reset};
		1585
		1586	$self->do_decay_objects;
		1587	}
		1588
1399	sub unlink_save {	1589	sub unlink_save {
1400	my ($self) = @_;	1590	my ($self) = @_;
1401		1591
1402	utf8::encode (my $save = $self->save_path);	1592	utf8::encode (my $save = $self->save_path);
1403	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;	1593	IO::AIO::aioreq_pri 4; Coro::AIO::aio_unlink $save;
…		…
1459	$self->load_header_orig	1649	$self->load_header_orig
1460	or return;	1650	or return;
1461	$self->prepare_orig;	1651	$self->prepare_orig;
1462	}	1652	}
1463		1653
		1654	$self->{deny_reset} = 1
		1655	if $self->no_reset;
		1656
1464	$self->default_region (cf::region::find_by_path $self->{path})	1657	$self->default_region (cf::region::find_by_path $self->{path})
1465	unless $self->default_region;	1658	unless $self->default_region;
1466		1659
1467	1	1660	1
1468	}	1661	}
…		…
1483	$map->{last_save} = $cf::RUNTIME;	1676	$map->{last_save} = $cf::RUNTIME;
1484		1677
1485	$map->load_header	1678	$map->load_header
1486	or return;	1679	or return;
1487		1680
1488	if ($map->should_reset && 0) {#d#TODO# disabled, crashy (locking issue?)	1681	if ($map->should_reset) {#d#TODO# disabled, crashy (locking issue?)
1489	# doing this can freeze the server in a sync job, obviously	1682	# doing this can freeze the server in a sync job, obviously
1490	#$cf::WAIT_FOR_TICK->wait;	1683	#$cf::WAIT_FOR_TICK->wait;
1491	$map->reset;	1684	$map->reset;
1492	undef $guard;	1685	undef $guard;
1493	return find $path;	1686	return find $path;
…		…
1560	my ($self, $ob) = @_;	1753	my ($self, $ob) = @_;
1561		1754
1562	return find "~" . $ob->name . "/" . $self->{path}	1755	return find "~" . $ob->name . "/" . $self->{path}
1563	if $self->per_player;	1756	if $self->per_player;
1564		1757
		1758	# return find "?party/" . $ob->name . "/" . $self->{path}
		1759	# if $self->per_party;
		1760
1565	$self	1761	$self
1566	}	1762	}
1567		1763
1568	# find and load all maps in the 3x3 area around a map	1764	# find and load all maps in the 3x3 area around a map
1569	sub load_diag {	1765	sub load_diag {
…		…
1679		1875
1680	sub reset_at {	1876	sub reset_at {
1681	my ($self) = @_;	1877	my ($self) = @_;
1682		1878
1683	# TODO: safety, remove and allow resettable per-player maps	1879	# TODO: safety, remove and allow resettable per-player maps
1684	return 1e99 if $self->isa ("ext::map_per_player");#d#
1685	return 1e99 if $self->{deny_reset};	1880	return 1e99 if $self->{deny_reset};
1686		1881
1687	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;	1882	my $time = $self->fixed_resettime ? $self->{instantiate_time} : $self->last_access;
1688	my $to = List::Util::min $MAX_RESET, $self->reset_timeout \|\| $DEFAULT_RESET;	1883	my $to = List::Util::min $MAX_RESET, $self->reset_timeout \|\| $DEFAULT_RESET;
1689		1884
…		…
1700	my ($self) = @_;	1895	my ($self) = @_;
1701		1896
1702	my $lock = cf::lock_acquire "map_data:$self->{path}";	1897	my $lock = cf::lock_acquire "map_data:$self->{path}";
1703		1898
1704	return if $self->players;	1899	return if $self->players;
1705	return if $self->isa ("ext::map_per_player");#d#
1706		1900
1707	warn "resetting map ", $self->path;#d#	1901	warn "resetting map ", $self->path;
1708		1902
1709	$self->in_memory (cf::MAP_SWAPPED);	1903	$self->in_memory (cf::MAP_SWAPPED);
1710		1904
1711	# need to save uniques path	1905	# need to save uniques path
1712	unless ($self->{deny_save}) {	1906	unless ($self->{deny_save}) {
…		…
1744	$cf::MAP{$self->path} = $self;	1938	$cf::MAP{$self->path} = $self;
1745		1939
1746	$self->reset; # polite request, might not happen	1940	$self->reset; # polite request, might not happen
1747	}	1941	}
1748		1942
		1943	=item $maps = cf::map::tmp_maps
		1944
		1945	Returns an arrayref with all map paths of currently instantiated and saved
		1946	maps. May block.
		1947
		1948	=cut
		1949
		1950	sub tmp_maps() {
		1951	[
		1952	map {
		1953	utf8::decode $_;
		1954	/\.map$/
		1955	? normalise $_
		1956	: ()
		1957	} @{ aio_readdir $TMPDIR or [] }
		1958	]
		1959	}
		1960
		1961	=item $maps = cf::map::random_maps
		1962
		1963	Returns an arrayref with all map paths of currently instantiated and saved
		1964	random maps. May block.
		1965
		1966	=cut
		1967
		1968	sub random_maps() {
		1969	[
		1970	map {
		1971	utf8::decode $_;
		1972	/\.map$/
		1973	? normalise "?random/$_"
		1974	: ()
		1975	} @{ aio_readdir $RANDOMDIR or [] }
		1976	]
		1977	}
		1978
1749	=item cf::map::unique_maps	1979	=item cf::map::unique_maps
1750		1980
1751	Returns an arrayref of paths of all shared maps that have	1981	Returns an arrayref of paths of all shared maps that have
1752	instantiated unique items. May block.	1982	instantiated unique items. May block.
1753		1983
1754	=cut	1984	=cut
1755		1985
1756	sub unique_maps() {	1986	sub unique_maps() {
1757	my $files = aio_readdir $UNIQUEDIR	1987	[
1758	or return;	1988	map {
1759
1760	my @paths;
1761
1762	for (@$files) {
1763	utf8::decode $_;	1989	utf8::decode $_;
1764	next if /\.pst$/;	1990	/\.map$/
1765	next unless /^$PATH_SEP/o;	1991	? normalise $_
1766		1992	: ()
1767	push @paths, cf::map::normalise $_;	1993	} @{ aio_readdir $UNIQUEDIR or [] }
1768	}	1994	]
1769
1770	\@paths
1771	}	1995	}
1772		1996
1773	package cf;	1997	package cf;
1774		1998
1775	=back	1999	=back
…		…
1821		2045
1822	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;	2046	$flags = cf::NDI_BROWN \| cf::NDI_UNIQUE unless @_ >= 4;
1823		2047
1824	if ($self->{record_replies}) {	2048	if ($self->{record_replies}) {
1825	push @{ $self->{record_replies} }, [$npc, $msg, $flags];	2049	push @{ $self->{record_replies} }, [$npc, $msg, $flags];
		2050
1826	} else {	2051	} else {
		2052	my $pl = $self->contr;
		2053
		2054	if ($pl->{npc_dialog} && $pl->{npc_dialog}->{id}) {
		2055	my $diag = $pl->{npc_dialog};
		2056	$diag->{pl}->ext_reply (
		2057	$diag->{id}, msgtype => "reply", msg => $msg, add_topics => []
		2058	);
		2059
		2060	} else {
1827	$msg = $npc->name . " says: $msg" if $npc;	2061	$msg = $npc->name . " says: $msg" if $npc;
1828	$self->message ($msg, $flags);	2062	$self->message ($msg, $flags);
		2063	}
1829	}	2064	}
1830	}	2065	}
1831		2066
1832	=item $player_object->may ("access")	2067	=item $player_object->may ("access")
1833		2068
…		…
1881	$self->deactivate_recursive;	2116	$self->deactivate_recursive;
1882		2117
1883	return if UNIVERSAL::isa $self->map, "ext::map_link";	2118	return if UNIVERSAL::isa $self->map, "ext::map_link";
1884		2119
1885	$self->{_link_pos} \|\|= [$self->map->{path}, $self->x, $self->y]	2120	$self->{_link_pos} \|\|= [$self->map->{path}, $self->x, $self->y]
1886	if $self->map;	2121	if $self->map && $self->map->{path} ne "{link}";
1887		2122
1888	$self->enter_map ($LINK_MAP \|\| link_map, 10, 10);	2123	$self->enter_map ($LINK_MAP \|\| link_map, 10, 10);
1889	}	2124	}
1890		2125
1891	sub cf::object::player::leave_link {	2126	sub cf::object::player::leave_link {
1892	my ($self, $map, $x, $y) = @_;	2127	my ($self, $map, $x, $y) = @_;
		2128
		2129	return unless $self->contr->active;
1893		2130
1894	my $link_pos = delete $self->{_link_pos};	2131	my $link_pos = delete $self->{_link_pos};
1895		2132
1896	unless ($map) {	2133	unless ($map) {
1897	# restore original map position	2134	# restore original map position
…		…
1920		2157
1921	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext	2158	local $self->{_prev_pos} = $link_pos; # ugly hack for rent.ext
1922	$self->enter_map ($map, $x, $y);	2159	$self->enter_map ($map, $x, $y);
1923	}	2160	}
1924		2161
1925	cf::player->attach (
1926	on_logout => sub {
1927	my ($pl) = @_;
1928
1929	# abort map switching before logout
1930	if ($pl->ob->{_link_pos}) {
1931	cf::sync_job {
1932	$pl->ob->leave_link
1933	};
1934	}
1935	},
1936	on_login => sub {
1937	my ($pl) = @_;
1938
1939	# try to abort aborted map switching on player login :)
1940	# should happen only on crashes
1941	if ($pl->ob->{_link_pos}) {
1942	$pl->ob->enter_link;
1943	(async {
1944	$pl->ob->reply (undef,
1945	"There was an internal problem at your last logout, "
1946	. "the server will try to bring you to your intended destination in a second.",
1947	cf::NDI_RED);
1948	# we need this sleep as the login has a concurrent enter_exit running
1949	# and this sleep increases chances of the player not ending up in scorn
1950	Coro::Timer::sleep 1;
1951	$pl->ob->leave_link;
1952	})->prio (2);
1953	}
1954	},
1955	);
1956
1957	=item $player_object->goto ($path, $x, $y)	2162	=item $player_object->goto ($path, $x, $y[, $check->($map)])
1958		2163
		2164	Moves the player to the given map-path and coordinates by first freezing
		2165	her, loading and preparing them map, calling the provided $check callback
		2166	that has to return the map if sucecssful, and then unfreezes the player on
		2167	the new (success) or old (failed) map position.
		2168
1959	=cut	2169	=cut
		2170
		2171	our $GOTOGEN;
1960		2172
1961	sub cf::object::player::goto {	2173	sub cf::object::player::goto {
1962	my ($self, $path, $x, $y) = @_;	2174	my ($self, $path, $x, $y, $check) = @_;
		2175
		2176	# do generation counting so two concurrent goto's will be executed in-order
		2177	my $gen = $self->{_goto_generation} = ++$GOTOGEN;
1963		2178
1964	$self->enter_link;	2179	$self->enter_link;
1965		2180
1966	(async {	2181	(async {
1967	my $map = eval {	2182	my $map = eval {
1968	my $map = cf::map::find $path;	2183	my $map = cf::map::find $path;
		2184
		2185	if ($map) {
1969	$map = $map->customise_for ($self) if $map;	2186	$map = $map->customise_for ($self);
		2187	$map = $check->($map) if $check && $map;
		2188	} else {
		2189	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
		2190	}
		2191
1970	$map	2192	$map
		2193	};
		2194
		2195	if ($@) {
		2196	$self->message ("Something went wrong within the server, please report this incident!", cf::NDI_UNIQUE \| cf::NDI_RED);
		2197	LOG llevError \| logBacktrace, Carp::longmess $@;
1971	} or	2198	}
1972	$self->message ("The exit to '$path' is closed", cf::NDI_UNIQUE \| cf::NDI_RED);
1973		2199
		2200	if ($gen == $self->{_goto_generation}) {
		2201	delete $self->{_goto_generation};
1974	$self->leave_link ($map, $x, $y);	2202	$self->leave_link ($map, $x, $y);
		2203	}
1975	})->prio (1);	2204	})->prio (1);
1976	}	2205	}
1977		2206
1978	=item $player_object->enter_exit ($exit_object)	2207	=item $player_object->enter_exit ($exit_object)
1979		2208
…		…
2293	=back	2522	=back
2294		2523
2295	=cut	2524	=cut
2296		2525
2297	#############################################################################	2526	#############################################################################
2298
2299	=head2 EXTENSION DATABASE SUPPORT
2300
2301	Crossfire maintains a very simple database for extension use. It can
2302	currently store binary data only (use Compress::LZF::sfreeze_cr/sthaw to
2303	convert to/from binary).
2304
2305	The parameter C<$family> should best start with the name of the extension
2306	using it, it should be unique.
2307
2308	=over 4
2309
2310	=item $value = cf::db_get $family => $key
2311
2312	Returns a single value from the database.
2313
2314	=item cf::db_put $family => $key => $value
2315
2316	Stores the given C<$value> in the family.
2317
2318	=cut
2319
2320	our $DB;
2321
2322	sub db_init {
2323	unless ($DB) {
2324	$DB = BDB::db_create $DB_ENV;
2325
2326	cf::sync_job {
2327	eval {
2328	$DB->set_flags (BDB::CHKSUM);
2329
2330	BDB::db_open $DB, undef, "db", undef, BDB::BTREE,
2331	BDB::CREATE \| BDB::AUTO_COMMIT, 0666;
2332	cf::cleanup "db_open(db): $!" if $!;
2333	};
2334	cf::cleanup "db_open(db): $@" if $@;
2335	};
2336	}
2337	}
2338
2339	sub db_get($$) {
2340	my $key = "$_[0]/$_[1]";
2341
2342	cf::sync_job {
2343	BDB::db_get $DB, undef, $key, my $data;
2344
2345	$! ? ()
2346	: $data
2347	}
2348	}
2349
2350	sub db_put($$$) {
2351	BDB::dbreq_pri 4;
2352	BDB::db_put $DB, undef, "$_[0]/$_[1]", $_[2], 0, sub { };
2353	}
2354
2355	=item cf::cache $id => [$paths...], $processversion => $process
2356
2357	Generic caching function that returns the value of the resource $id,
2358	caching and regenerating as required.
2359
2360	This function can block.
2361
2362	=cut
2363
2364	sub cache {
2365	my ($id, $src, $processversion, $process) = @_;
2366
2367	my $meta =
2368	join "\x00",
2369	$processversion,
2370	map {
2371	aio_stat $_
2372	and Carp::croak "$_: $!";
2373
2374	($_, (stat _)[7,9])
2375	} @$src;
2376
2377	my $dbmeta = db_get cache => "$id/meta";
2378	if ($dbmeta ne $meta) {
2379	# changed, we may need to process
2380
2381	my @data;
2382	my $md5;
2383
2384	for (0 .. $#$src) {
2385	0 <= aio_load $src->[$_], $data[$_]
2386	or Carp::croak "$src->[$_]: $!";
2387	}
2388
2389	# if processing is expensive, check
2390	# checksum first
2391	if (1) {
2392	$md5 =
2393	join "\x00",
2394	$processversion,
2395	map {
2396	Coro::cede;
2397	($src->[$_], Digest::MD5::md5_hex $data[$_])
2398	} 0.. $#$src;
2399
2400
2401	my $dbmd5 = db_get cache => "$id/md5";
2402	if ($dbmd5 eq $md5) {
2403	db_put cache => "$id/meta", $meta;
2404
2405	return db_get cache => "$id/data";
2406	}
2407	}
2408
2409	my $t1 = Time::HiRes::time;
2410	my $data = $process->(\@data);
2411	my $t2 = Time::HiRes::time;
2412
2413	warn "cache: '$id' processed in ", $t2 - $t1, "s\n";
2414
2415	db_put cache => "$id/data", $data;
2416	db_put cache => "$id/md5" , $md5;
2417	db_put cache => "$id/meta", $meta;
2418
2419	return $data;
2420	}
2421
2422	db_get cache => "$id/data"
2423	}
2424
2425	=item fork_call { }, $args
2426
2427	Executes the given code block with the given arguments in a seperate
2428	process, returning the results. Everything must be serialisable with
2429	Coro::Storable. May, of course, block. Note that the executed sub may
2430	never block itself or use any form of Event handling.
2431
2432	=cut
2433
2434	sub fork_call(&@) {
2435	my ($cb, @args) = @_;
2436
2437	# socketpair my $fh1, my $fh2, Socket::AF_UNIX, Socket::SOCK_STREAM, Socket::PF_UNSPEC
2438	# or die "socketpair: $!";
2439	pipe my $fh1, my $fh2
2440	or die "pipe: $!";
2441
2442	if (my $pid = fork) {
2443	close $fh2;
2444
2445	my $res = (Coro::Handle::unblock $fh1)->readline (undef);
2446	$res = Coro::Storable::thaw $res;
2447
2448	waitpid $pid, 0; # should not block anymore, we expect the child to simply behave
2449
2450	die $$res unless "ARRAY" eq ref $res;
2451
2452	return wantarray ? @$res : $res->[-1];
2453	} else {
2454	reset_signals;
2455	local $SIG{__WARN__};
2456	local $SIG{__DIE__};
2457	eval {
2458	close $fh1;
2459
2460	my @res = eval { $cb->(@args) };
2461	syswrite $fh2, Coro::Storable::freeze +($@ ? \"$@" : \@res);
2462	};
2463
2464	warn $@ if $@;
2465	_exit 0;
2466	}
2467	}
2468
2469
2470
2471	#############################################################################
2472	# the server's init and main functions	2527	# the server's init and main functions
2473		2528
2474	sub load_facedata($) {	2529	sub load_facedata($) {
2475	my ($path) = @_;	2530	my ($path) = @_;
2476		2531
…		…
2546	sub reload_resources {	2601	sub reload_resources {
2547	warn "reloading resource files...\n";	2602	warn "reloading resource files...\n";
2548		2603
2549	reload_regions;	2604	reload_regions;
2550	reload_facedata;	2605	reload_facedata;
		2606	#reload_archetypes;#d#
2551	reload_archetypes;	2607	reload_archetypes;
2552	reload_treasures;	2608	reload_treasures;
2553		2609
2554	warn "finished reloading resource files\n";	2610	warn "finished reloading resource files\n";
2555	}	2611	}
…		…
2612	},	2668	},
2613	);	2669	);
2614	}	2670	}
2615	}	2671	}
2616		2672
		2673	sub write_runtime {
		2674	my $runtime = "$LOCALDIR/runtime";
		2675
		2676	# first touch the runtime file to show we are still running:
		2677	# the fsync below can take a very very long time.
		2678
		2679	IO::AIO::aio_utime $runtime, undef, undef;
		2680
		2681	my $guard = cf::lock_acquire "write_runtime";
		2682
		2683	my $fh = aio_open "$runtime~", O_WRONLY \| O_CREAT, 0644
		2684	or return;
		2685
		2686	my $value = $cf::RUNTIME + 90 + 10;
		2687	# 10 is the runtime save interval, for a monotonic clock
		2688	# 60 allows for the watchdog to kill the server.
		2689
		2690	(aio_write $fh, 0, (length $value), $value, 0) <= 0
		2691	and return;
		2692
		2693	# always fsync - this file is important
		2694	aio_fsync $fh
		2695	and return;
		2696
		2697	# touch it again to show we are up-to-date
		2698	aio_utime $fh, undef, undef;
		2699
		2700	close $fh
		2701	or return;
		2702
		2703	aio_rename "$runtime~", $runtime
		2704	and return;
		2705
		2706	warn "runtime file written.\n";
		2707
		2708	1
		2709	}
		2710
2617	sub emergency_save() {	2711	sub emergency_save() {
2618	my $freeze_guard = cf::freeze_mainloop;	2712	my $freeze_guard = cf::freeze_mainloop;
2619		2713
2620	warn "enter emergency perl save\n";	2714	warn "enter emergency perl save\n";
2621		2715
…		…
2825	my $signal = new Coro::Signal;	2919	my $signal = new Coro::Signal;
2826	push @WAIT_FOR_TICK_BEGIN, $signal;	2920	push @WAIT_FOR_TICK_BEGIN, $signal;
2827	$signal->wait;	2921	$signal->wait;
2828	}	2922	}
2829		2923
		2924	my $min = 1e6;#d#
		2925	my $avg = 10;
2830	$TICK_WATCHER = Event->timer (	2926	$TICK_WATCHER = Event->timer (
2831	reentrant => 0,	2927	reentrant => 0,
2832	parked => 1,	2928	parked => 1,
2833	prio => 0,	2929	prio => 0,
2834	at => $NEXT_TICK \|\| $TICK,	2930	at => $NEXT_TICK \|\| $TICK,
…		…
2838	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"	2934	Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
2839	unless ++$bug_warning > 10;	2935	unless ++$bug_warning > 10;
2840	return;	2936	return;
2841	}	2937	}
2842		2938
2843	$NOW = Event::time;	2939	$NOW = $tick_start = Event::time;
2844		2940
2845	cf::server_tick; # one server iteration	2941	cf::server_tick; # one server iteration
		2942
		2943	0 && sync_job {#d#
		2944	for(1..10) {
		2945	my $t = Event::time;
		2946	my $map = my $map = new_from_path cf::map "/tmp/x.map"
		2947	or die;
		2948
		2949	$map->width (50);
		2950	$map->height (50);
		2951	$map->alloc;
		2952	$map->_load_objects ("/tmp/x.map", 1);
		2953	my $t = Event::time - $t;
		2954
		2955	#next unless $t < 0.0013;#d#
		2956	if ($t < $min) {
		2957	$min = $t;
		2958	}
		2959	$avg = $avg * 0.99 + $t * 0.01;
		2960	}
		2961	warn "XXXXXXXXXXXXXXXXXX min $min avg $avg\n";#d#
		2962	exit 0;
		2963	# 2007-05-22 02:33:04.569 min 0.00112509727478027 avg 0.0012259249572477
		2964	};
2846		2965
2847	$RUNTIME += $TICK;	2966	$RUNTIME += $TICK;
2848	$NEXT_TICK += $TICK;	2967	$NEXT_TICK += $TICK;
2849		2968
2850	if ($NOW >= $NEXT_RUNTIME_WRITE) {	2969	if ($NOW >= $NEXT_RUNTIME_WRITE) {
…		…
2856	}	2975	}
2857		2976
2858	# my $AFTER = Event::time;	2977	# my $AFTER = Event::time;
2859	# warn $AFTER - $NOW;#d#	2978	# warn $AFTER - $NOW;#d#
2860		2979
		2980	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {
		2981	$sig->send;
		2982	}
		2983	while (my $sig = shift @WAIT_FOR_TICK) {
		2984	$sig->send;
		2985	}
		2986
		2987	$NOW = Event::time;
		2988
2861	# if we are delayed by four ticks or more, skip them all	2989	# if we are delayed by four ticks or more, skip them all
2862	$NEXT_TICK = Event::time if Event::time >= $NEXT_TICK + $TICK * 4;	2990	$NEXT_TICK = $NOW if $NOW >= $NEXT_TICK + $TICK * 4;
2863		2991
2864	$TICK_WATCHER->at ($NEXT_TICK);	2992	$TICK_WATCHER->at ($NEXT_TICK);
2865	$TICK_WATCHER->start;	2993	$TICK_WATCHER->start;
2866		2994
2867	if (my $sig = shift @WAIT_FOR_TICK_BEGIN) {	2995	$LOAD = ($NOW - $tick_start) / $TICK;
2868	$sig->send;	2996	$LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
2869	}
2870	while (my $sig = shift @WAIT_FOR_TICK) {
2871	$sig->send;
2872	}
2873		2997
2874	_post_tick;	2998	_post_tick;
		2999
		3000
2875	},	3001	},
2876	);	3002	);
2877		3003
2878	{	3004	{
2879	BDB::max_poll_time $TICK * 0.1;	3005	BDB::max_poll_time $TICK * 0.1;

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing deliantra/server/lib/cf.pm (file contents): Revision 1.264 by root, Sun May 6 05:44:48 2007 UTC vs. Revision 1.282 by elmex, Tue Jun 19 18:15:34 2007 UTC

Diff Legend

Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.264 by root, Sun May 6 05:44:48 2007 UTC vs.
Revision 1.282 by elmex, Tue Jun 19 18:15:34 2007 UTC