[ViewVC] Diff of: cvs/deliantra/Deliantra-Client/DC/DB.pm

Comparing deliantra/Deliantra-Client/DC/DB.pm (file contents):
Revision 1.1 by root, Fri Apr 6 07:45:34 2007 UTC vs.
Revision 1.20 by root, Tue Aug 28 20:07:18 2007 UTC

…		…
1	=head1 NAME	1	=head1 NAME
2		2
3	CFPlus::DB - async. database access for cfplus	3	CFPlus::DB - async. database and filesystem access for cfplus
4		4
5	=head1 SYNOPSIS	5	=head1 SYNOPSIS
6		6
7	use CFPlus::DB;	7	use CFPlus::DB;
8		8
16		16
17	use strict;	17	use strict;
18	use utf8;	18	use utf8;
19		19
20	use Carp ();	20	use Carp ();
		21	use Storable ();
		22	use Config;
21	use AnyEvent ();	23	use Event ();
22	use Storable (); # finally	24
		25	use CFPlus;
		26
		27	our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}";
		28
		29	sub path_of_res($) {
		30	utf8::downgrade $_[0]; # bug in unpack "H*"
		31	"$DB_HOME/res-data-" . unpack "H*", $_[0]
		32	}
23		33
24	sub sync {	34	sub sync {
25	# for debugging	35	# for debugging
26	#CFPlus::DB::Server::req (sync => sub { });	36	#CFPlus::DB::Server::req (sync => sub { });
27	CFPlus::DB::Server::sync ();	37	CFPlus::DB::Server::sync ();
28	}	38	}
29		39
		40	sub exists($$$) {
		41	CFPlus::DB::Server::req (exists => @_);
		42	}
		43
30	sub get($$$) {	44	sub get($$$) {
31	CFPlus::DB::Server::req (get => @_);	45	CFPlus::DB::Server::req (get => @_);
32	}	46	}
33		47
34	sub put($$$$) {	48	sub put($$$$) {
35	CFPlus::DB::Server::req (put => @_);	49	CFPlus::DB::Server::req (put => @_);
36	}	50	}
37		51
		52	sub unlink($$) {
		53	CFPlus::DB::Server::req (unlink => @_);
		54	}
		55
		56	sub read_file($$) {
		57	CFPlus::DB::Server::req (read_file => @_);
		58	}
		59
		60	sub write_file($$$) {
		61	CFPlus::DB::Server::req (write_file => @_);
		62	}
		63
		64	sub prefetch_file($$$) {
		65	CFPlus::DB::Server::req (prefetch_file => @_);
		66	}
		67
		68	sub logprint($$$) {
		69	CFPlus::DB::Server::req (logprint => @_);
		70	}
		71
38	our $tilemap;	72	our $tilemap;
39		73
40	sub get_tile_id_sync($) {	74	sub get_tile_id_sync($) {
41	my ($hash) = @_;	75	my ($name) = @_;
42		76
43	# fetch the full face table first	77	# fetch the full face table first
44	unless ($tilemap) {	78	unless ($tilemap) {
45	CFPlus::DB::Server::req (table => facemap => sub { $tilemap = $_[0] });	79	CFPlus::DB::Server::req (table => facemap => sub {
		80	$tilemap = $_[0];
		81	delete $tilemap->{id};
		82	my %maptile = reverse %$tilemap;#d#
		83	if ((scalar keys %$tilemap) != (scalar keys %maptile)) {#d#
		84	$tilemap = { };#d#
		85	CFPlus::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d#
		86	}#d#
		87	});
46	sync;	88	sync;
47	}	89	}
48		90
49	$tilemap->{$hash} \|\|= do {	91	$tilemap->{$name} \|\|= do {
50	my $id;	92	my $id;
51	CFPlus::DB::Server::req (get_tile_id => $hash, sub { $id = $_[0] });	93	CFPlus::DB::Server::req (get_tile_id => $name, sub { $id = $_[0] });
52	sync;	94	sync;
53	$id	95	$id
54	}	96	}
55	}	97	}
56		98
…		…
59	use strict;	101	use strict;
60		102
61	use Fcntl;	103	use Fcntl;
62	use BerkeleyDB;	104	use BerkeleyDB;
63		105
64	our $DB_HOME = "$Crossfire::VARDIR/cfplus";
65	our $DB_ENV;	106	our $DB_ENV;
66	our $DB_STATE;	107	our $DB_STATE;
67	our %DB_TABLE;	108	our %DB_TABLE;
68		109
69	sub open_db {	110	sub open_db {
…		…
77	-Cachesize => 8_000_000,	118	-Cachesize => 8_000_000,
78	-ErrFile => "$DB_HOME/errorlog.txt",	119	-ErrFile => "$DB_HOME/errorlog.txt",
79	# -ErrPrefix => "DATABASE",	120	# -ErrPrefix => "DATABASE",
80	-Verbose => 1,	121	-Verbose => 1,
81	-Flags => DB_CREATE \| DB_RECOVER \| DB_INIT_MPOOL \| DB_INIT_LOCK \| DB_INIT_TXN \| $recover,	122	-Flags => DB_CREATE \| DB_RECOVER \| DB_INIT_MPOOL \| DB_INIT_LOCK \| DB_INIT_TXN \| $recover,
82	-SetFlags => DB_AUTO_COMMIT \| DB_LOG_AUTOREMOVE,	123	-SetFlags => DB_AUTO_COMMIT \| DB_LOG_AUTOREMOVE \| DB_TXN_WRITE_NOSYNC,
83	or die "unable to create/open database home $DB_HOME: $BerkeleyDB::Error";	124	or die "unable to create/open database home $DB_HOME: $BerkeleyDB::Error";
84		125
85	1	126	1
86	}	127	}
87		128
…		…
95	-Env => $DB_ENV,	136	-Env => $DB_ENV,
96	-Filename => $table,	137	-Filename => $table,
97	# -Filename => "database",	138	# -Filename => "database",
98	# -Subname => $table,	139	# -Subname => $table,
99	-Property => DB_CHKSUM,	140	-Property => DB_CHKSUM,
100	-Flags => DB_CREATE \| DB_UPGRADE,	141	-Flags => DB_AUTO_COMMIT \| DB_CREATE \| DB_UPGRADE,
101	or die "unable to create/open database table $_[0]: $BerkeleyDB::Error"	142	or die "unable to create/open database table $_[0]: $BerkeleyDB::Error"
102	}	143	}
103	}	144	}
104
105	our $SYNC_INTERVAL = 6;
106		145
107	our %CB;	146	our %CB;
108	our $FH;	147	our $FH;
109	our $ID = "aaa0";	148	our $ID = "aaa0";
110	our ($fh_r_watcher, $fh_w_watcher);	149	our ($fh_r_watcher, $fh_w_watcher);
111	our $sync_timer;	150	our $sync_timer;
112	our $write_buf;	151	our $write_buf;
113	our $read_buf;	152	our $read_buf;
114		153
		154	our $SYNC = Event->idle (min => 120, max => 180, parked => 1, cb => sub {
		155	CFPlus::DB::Server::req (sync => sub { });
		156	$_[0]->w->stop;
		157	});
		158
115	sub fh_write {	159	sub fh_write {
116	my $len = syswrite $FH, $write_buf;	160	my $len = syswrite $FH, $write_buf;
117		161
118	substr $write_buf, 0, $len, "";	162	substr $write_buf, 0, $len, "";
119		163
120	undef $fh_w_watcher	164	$fh_w_watcher->stop
121	unless length $write_buf;	165	unless length $write_buf;
122	}	166	}
123		167
124	sub fh_read {	168	sub fh_read {
125	my $status = sysread $FH, $read_buf, 16384, length $read_buf;	169	my $status = sysread $FH, $read_buf, 16384, length $read_buf;
…		…
161		205
162	my $id = ++$ID;	206	my $id = ++$ID;
163	$write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args];	207	$write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args];
164	$CB{$id} = $cb;	208	$CB{$id} = $cb;
165		209
166	$fh_w_watcher = AnyEvent->io (fh => $FH, poll => 'w', cb => \&fh_write);	210	$fh_w_watcher->start;
167	}	211	$SYNC->start;
168
169	sub sync_tick {
170	req "sync", sub { };
171	$sync_timer = AnyEvent->timer (after => $SYNC_INTERVAL, cb => \&sync_tick);
172	}	212	}
173		213
174	sub do_sync {	214	sub do_sync {
175	$DB_ENV->txn_checkpoint (0, 0, 0);	215	$DB_ENV->txn_checkpoint (0, 0, 0);
176	()	216	()
177	}	217	}
178		218
		219	sub do_exists {
		220	my ($db, $key) = @_;
		221
		222	utf8::downgrade $key;
		223	my $data;
		224	(table $db)->db_get ($key, $data) == 0
		225	? length $data
		226	: ()
		227	}
		228
179	sub do_get {	229	sub do_get {
180	my ($db, $key) = @_;	230	my ($db, $key) = @_;
181		231
		232	utf8::downgrade $key;
182	my $data;	233	my $data;
183	(table $db)->db_get ($key, $data) == 0	234	(table $db)->db_get ($key, $data) == 0
184	? $data	235	? $data
185	: ()	236	: ()
186	}	237	}
187		238
188	sub do_put {	239	sub do_put {
189	my ($db, $key, $data) = @_;	240	my ($db, $key, $data) = @_;
190		241
		242	utf8::downgrade $key;
		243	utf8::downgrade $data;
191	(table $db)->db_put ($key => $data)	244	(table $db)->db_put ($key => $data)
192	}	245	}
193		246
194	sub do_table {	247	sub do_table {
195	my ($db) = @_;	248	my ($db) = @_;
…		…
203		256
204	\%kv	257	\%kv
205	}	258	}
206		259
207	sub do_get_tile_id {	260	sub do_get_tile_id {
208	my ($hash) = @_;	261	my ($name) = @_;
209		262
210	my $id;	263	my $id;
211	my $table = table "facemap";	264	my $table = table "facemap";
212		265
213	return $id	266	return $id
214	if $table->db_get ($hash, $id) == 0;	267	if $table->db_get ($name, $id) == 0;
215		268
216	for (1..100) {	269	for (1..100) {
217	my $txn = $DB_ENV->txn_begin;	270	my $txn = $DB_ENV->txn_begin;
218	my $status = $table->db_get (id => $id);	271	my $status = $table->db_get (id => $id);
219	if ($status == 0 \|\| $status == BerkeleyDB::DB_NOTFOUND) {	272	if ($status == 0 \|\| $status == BerkeleyDB::DB_NOTFOUND) {
220	$id = ($id \|\| 64) + 1;	273	$id = ($id \|\| 64) + 1;
221	if ($table->db_put (id => $id) == 0	274	if ($table->db_put (id => $id) == 0
222	&& $table->db_put ($hash => $id) == 0) {	275	&& $table->db_put ($name => $id) == 0) {
223	$txn->txn_commit;	276	$txn->txn_commit;
224		277
225	return $id;	278	return $id;
226	}	279	}
227	}	280	}
228	$txn->txn_abort;	281	$txn->txn_abort;
		282	select undef, undef, undef, 0.01 * rand;
229	}	283	}
230		284
231	die "maximum number of transaction retries reached - database problems?";	285	die "maximum number of transaction retries reached - database problems?";
		286	}
		287
		288	sub do_unlink {
		289	unlink $_[0];
		290	}
		291
		292	sub do_read_file {
		293	my ($path) = @_;
		294
		295	utf8::downgrade $path;
		296	open my $fh, "<:raw", $path
		297	or return;
		298	sysread $fh, my $buf, -s $fh;
		299
		300	$buf
		301	}
		302
		303	sub do_write_file {
		304	my ($path, $data) = @_;
		305
		306	utf8::downgrade $path;
		307	utf8::downgrade $data;
		308	open my $fh, ">:raw", $path
		309	or return;
		310	syswrite $fh, $data;
		311	close $fh;
		312
		313	1
		314	}
		315
		316	sub do_prefetch_file {
		317	my ($path, $size) = @_;
		318
		319	utf8::downgrade $path;
		320	open my $fh, "<:raw", $path
		321	or return;
		322	sysread $fh, my $buf, $size;
		323
		324	1
		325	}
		326
		327	our %LOG_FH;
		328
		329	sub do_logprint {
		330	my ($path, $line) = @_;
		331
		332	$LOG_FH{$path} \|\|= do {
		333	open my $fh, ">>:utf8", $path
		334	or warn "Couldn't open logfile $path: $!";
		335
		336	$fh->autoflush (1);
		337
		338	$fh
		339	};
		340
		341	my ($sec, $min, $hour, $mday, $mon, $year) = localtime time;
		342
		343	my $ts = sprintf "%04d-%02d-%02d %02d:%02d:%02d",
		344	$year + 1900, $mon + 1, $mday, $hour, $min, $sec;
		345
		346	print { $LOG_FH{$path} } "$ts $line\n"
232	}	347	}
233		348
234	sub run {	349	sub run {
235	($FH, my $fh) = CFPlus::socketpipe;	350	($FH, my $fh) = CFPlus::socketpipe;
236		351
…		…
238	my $oldfh = select $fh; $\| = 1; select $oldfh;	353	my $oldfh = select $fh; $\| = 1; select $oldfh;
239		354
240	my $pid = fork;	355	my $pid = fork;
241		356
242	if (defined $pid && !$pid) {	357	if (defined $pid && !$pid) {
		358	local $SIG{QUIT};
243	local $SIG{__DIE__};	359	local $SIG{__DIE__};
		360	local $SIG{__WARN__};
244	eval {	361	eval {
245	close $FH;	362	close $FH;
246		363
247	unless (eval { open_db }) {	364	unless (eval { open_db }) {
248	File::Path::rmtree $DB_HOME;	365	eval { File::Path::rmtree $DB_HOME };
249	open_db;	366	open_db;
250	}	367	}
251		368
252	while () {	369	while () {
253	4 == read $fh, my $len, 4	370	4 == read $fh, my $len, 4
…		…
278		395
279	CFPlus::_exit 0;	396	CFPlus::_exit 0;
280	}	397	}
281		398
282	close $fh;	399	close $fh;
283	fcntl $FH, F_SETFL, O_NONBLOCK;	400	CFPlus::fh_nonblocking $FH, 1;
284		401
285	$CB{die} = sub {	402	$CB{die} = sub { die shift };
286	die shift;
287	};
288		403
289	$fh_r_watcher = AnyEvent->io (fh => $FH, poll => 'r', cb => \&fh_read);	404	$fh_r_watcher = Event->io (fd => $FH, poll => 'r', nice => 1, cb => \&fh_read);
		405	$fh_w_watcher = Event->io (fd => $FH, poll => 'w', nice => -1, parked => 1, cb => \&fh_write);
		406	$SYNC->start;
		407	}
290		408
291	sync_tick;	409	sub stop {
		410	close $FH;
292	}	411	}
293		412
294	1;	413	1;
295		414
296	=back	415	=back

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Comparing deliantra/Deliantra-Client/DC/DB.pm (file contents): Revision 1.1 by root, Fri Apr 6 07:45:34 2007 UTC vs. Revision 1.20 by root, Tue Aug 28 20:07:18 2007 UTC

Diff Legend

Comparing deliantra/Deliantra-Client/DC/DB.pm (file contents):
Revision 1.1 by root, Fri Apr 6 07:45:34 2007 UTC vs.
Revision 1.20 by root, Tue Aug 28 20:07:18 2007 UTC