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

Comparing deliantra/Deliantra-Client/DC/DB.pm (file contents):
Revision 1.22 by root, Tue Nov 13 02:47:30 2007 UTC vs.
Revision 1.25 by root, Tue Dec 11 03:38:36 2007 UTC

…		…
18	use utf8;	18	use utf8;
19		19
20	use Carp ();	20	use Carp ();
21	use Storable ();	21	use Storable ();
22	use Config;	22	use Config;
		23	use BDB;
23		24
24	use CFPlus;	25	use CFPlus;
25		26
26	our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}";	27	our $DB_HOME = "$Crossfire::VARDIR/cfplus-" . BDB::VERSION . "-$Config{archname}";
27		28
28	sub path_of_res($) {	29	our $DB_ENV;
29	utf8::downgrade $_[0]; # bug in unpack "H*"	30	our $DB_STATE;
30	"$DB_HOME/res-data-" . unpack "H*", $_[0]	31	our %DB_TABLE;
31	}
32		32
33	sub sync {	33	sub open_db {
34	# for debugging	34	mkdir $DB_HOME, 0777;
35	#CFPlus::DB::Server::req (sync => sub { });	35
36	CFPlus::DB::Server::sync ();	36	$DB_ENV = db_env_create;
		37
		38	$DB_ENV->set_errfile (\*STDERR);
		39	$DB_ENV->set_msgfile (\*STDERR);
		40	$DB_ENV->set_verbose (-1, 1);
		41
		42	$DB_ENV->set_flags (BDB::AUTO_COMMIT \| BDB::LOG_AUTOREMOVE \| BDB::TXN_WRITE_NOSYNC);
		43	$DB_ENV->set_cachesize (0, 2048 * 1024, 0);
		44
		45	db_env_open $DB_ENV, $DB_HOME,
		46	BDB::CREATE \| BDB::REGISTER \| BDB::RECOVER \| BDB::INIT_MPOOL \| BDB::INIT_LOCK \| BDB::INIT_TXN,
		47	0666;
		48
		49	$! and die "cannot open database environment $DB_HOME: " . BDB::strerror;
		50
		51	1
37	}	52	}
		53
		54	sub table($) {
		55	$DB_TABLE{$_[0]} \|\|= do {
		56	my ($table) = @_;
		57
		58	$table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge;
		59
		60	my $db = db_create $DB_ENV;
		61	$db->set_flags (BDB::CHKSUM);
		62
		63	db_open $db, undef, $table, undef, BDB::BTREE,
		64	BDB::AUTO_COMMIT \| BDB::CREATE \| BDB::READ_UNCOMMITTED, 0666;
		65
		66	$! and "unable to open/create database table $_[0]: ". BDB::strerror;
		67
		68	$db
		69	}
		70	}
		71
		72	#############################################################################
		73
		74	unless (eval { open_db }) {
		75	warn "$@";#d#
		76	eval { File::Path::rmtree $DB_HOME };
		77	open_db;
		78	}
		79
		80	our $WATCHER = EV::io BDB::poll_fileno, EV::READ, \&BDB::poll_cb;
		81
		82	our $SYNC = EV::timer_ns 0, 60, sub {
		83	$_[0]->stop;
		84	db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
		85	};
		86
		87	our $tilemap;
38		88
39	sub exists($$$) {	89	sub exists($$$) {
40	CFPlus::DB::Server::req (exists => @_);	90	my ($db, $key, $cb) = @_;
		91
		92	my $data;
		93	db_get table $db, undef, $key, $data, 0, sub {
		94	$cb->($! ? () : length $data);
		95	};
41	}	96	}
42		97
43	sub get($$$) {	98	sub get($$$) {
44	CFPlus::DB::Server::req (get => @_);	99	my ($db, $key, $cb) = @_;
		100
		101	my $data;
		102	db_get table $db, undef, $key, $data, 0, sub {
		103	$cb->($! ? () : $data);
		104	};
45	}	105	}
46		106
47	sub put($$$$) {	107	sub put($$$$) {
48	CFPlus::DB::Server::req (put => @_);	108	my ($db, $key, $data, $cb) = @_;
49	}
50		109
51	sub unlink($$) {	110	db_put table $db, undef, $key, $data, 0, sub {
52	CFPlus::DB::Server::req (unlink => @_);	111	$cb->($!);
		112	$SYNC->again unless $SYNC->is_active;
		113	};
53	}	114	}
54		115
55	sub read_file($$) {	116	sub do_table {
56	CFPlus::DB::Server::req (read_file => @_);	117	my ($db, $cb) = @_;
57	}
58		118
59	sub write_file($$$) {	119	$db = table $db;
60	CFPlus::DB::Server::req (write_file => @_);
61	}
62		120
63	sub prefetch_file($$$) {	121	my $cursor = $db->cursor;
64	CFPlus::DB::Server::req (prefetch_file => @_);	122	my %kv;
65	}
66		123
67	sub logprint($$$) {	124	for (;;) {
68	CFPlus::DB::Server::req (logprint => @_);	125	db_c_get $cursor, my $k, my $v, BDB::NEXT;
69	}	126	last if $!;
		127	$kv{$k} = $v;
		128	}
70		129
71	our $tilemap;	130	$cb->(\%kv);
		131	}
		132
		133	sub do_get_tile_id {
		134	my ($name, $cb) = @_;
		135
		136	my $table = table "facemap";
		137	my $id;
		138
		139	db_get $table, undef, $name, $id, 0;
		140	return $cb->($id) unless $!;
		141
		142	for (1..100) {
		143	my $txn = $DB_ENV->txn_begin;
		144	db_get $table, $txn, id => $id, 0;
		145
		146	$id = 64 if $id < 64;
		147
		148	++$id;
		149
		150	db_put $table, $txn, id => $id, 0;
		151	db_txn_finish $txn;
		152
		153	$SYNC->again unless $SYNC->is_active;
		154
		155	return $cb->($id) unless $!;
		156
		157	select undef, undef, undef, 0.01 * rand;
		158	}
		159
		160	die "maximum number of transaction retries reached - database problems?";
		161	}
72		162
73	sub get_tile_id_sync($) {	163	sub get_tile_id_sync($) {
74	my ($name) = @_;	164	my ($name) = @_;
75		165
76	# fetch the full face table first	166	# fetch the full face table first
77	unless ($tilemap) {	167	unless ($tilemap) {
78	CFPlus::DB::Server::req (table => facemap => sub {	168	do_table facemap => sub {
79	$tilemap = $_[0];	169	$tilemap = $_[0];
80	delete $tilemap->{id};	170	delete $tilemap->{id};
81	my %maptile = reverse %$tilemap;#d#	171	my %maptile = reverse %$tilemap;#d#
82	if ((scalar keys %$tilemap) != (scalar keys %maptile)) {#d#	172	if ((scalar keys %$tilemap) != (scalar keys %maptile)) {#d#
83	$tilemap = { };#d#	173	$tilemap = { };#d#
84	CFPlus::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d#	174	CFPlus::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d#
85	}#d#	175	}#d#
86	});	176	};
87	sync;	177	BDB::flush;
88	}	178	}
89		179
90	$tilemap->{$name} \|\|= do {	180	$tilemap->{$name} \|\|= do {
91	my $id;	181	my $id;
92	CFPlus::DB::Server::req (get_tile_id => $name, sub { $id = $_[0] });	182	do_get_tile_id $name, sub {
93	sync;	183	$id = $_[0];
		184	};
		185	BDB::flush;
94	$id	186	$id
95	}	187	}
96	}	188	}
97		189
		190	#############################################################################
		191
		192	sub path_of_res($) {
		193	utf8::downgrade $_[0]; # bug in unpack "H*"
		194	"$DB_HOME/res-data-" . unpack "H*", $_[0]
		195	}
		196
		197	sub sync {
		198	# for debugging
		199	#CFPlus::DB::Server::req (sync => sub { });
		200	CFPlus::DB::Server::sync ();
		201	}
		202
		203	sub unlink($$) {
		204	CFPlus::DB::Server::req (unlink => @_);
		205	}
		206
		207	sub read_file($$) {
		208	CFPlus::DB::Server::req (read_file => @_);
		209	}
		210
		211	sub write_file($$$) {
		212	CFPlus::DB::Server::req (write_file => @_);
		213	}
		214
		215	sub prefetch_file($$$) {
		216	CFPlus::DB::Server::req (prefetch_file => @_);
		217	}
		218
		219	sub logprint($$$) {
		220	CFPlus::DB::Server::req (logprint => @_);
		221	}
		222
98	package CFPlus::DB::Server;	223	package CFPlus::DB::Server;
99		224
100	use strict;	225	use strict;
101		226
		227	use EV ();
102	use Fcntl;	228	use Fcntl;
103	use BerkeleyDB;
104
105	our $DB_ENV;
106	our $DB_STATE;
107	our %DB_TABLE;
108
109	sub open_db {
110	mkdir $DB_HOME, 0777;
111	my $recover = $BerkeleyDB::db_version >= 4.4
112	? eval "DB_REGISTER \| DB_RECOVER"
113	: 0;
114
115	$DB_ENV = new BerkeleyDB::Env
116	-Home => $DB_HOME,
117	-Cachesize => 8_000_000,
118	-ErrFile => "$DB_HOME/errorlog.txt",
119	# -ErrPrefix => "DATABASE",
120	-Verbose => 1,
121	-Flags => DB_CREATE \| DB_RECOVER \| DB_INIT_MPOOL \| DB_INIT_LOCK \| DB_INIT_TXN \| $recover,
122	-SetFlags => DB_AUTO_COMMIT \| DB_LOG_AUTOREMOVE \| DB_TXN_WRITE_NOSYNC,
123	or die "unable to create/open database home $DB_HOME: $BerkeleyDB::Error";
124
125	1
126	}
127
128	sub table($) {
129	$DB_TABLE{$_[0]} \|\|= do {
130	my ($table) = @_;
131
132	$table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge;
133
134	new BerkeleyDB::Btree
135	-Env => $DB_ENV,
136	-Filename => $table,
137	# -Filename => "database",
138	# -Subname => $table,
139	-Property => DB_CHKSUM,
140	-Flags => DB_AUTO_COMMIT \| DB_CREATE \| DB_UPGRADE,
141	or die "unable to create/open database table $_[0]: $BerkeleyDB::Error"
142	}
143	}
144		229
145	our %CB;	230	our %CB;
146	our $FH;	231	our $FH;
147	our $ID = "aaa0";	232	our $ID = "aaa0";
148	our ($fh_r_watcher, $fh_w_watcher);	233	our ($fh_r_watcher, $fh_w_watcher);
149	our $sync_timer;	234	our $sync_timer;
150	our $write_buf;	235	our $write_buf;
151	our $read_buf;	236	our $read_buf;
152		237
153	our $SYNC = EV::timer_ns 0, 60, sub {
154	$_[0]->stop;
155	CFPlus::DB::Server::req (sync => sub { });
156	};
157
158	sub fh_write {	238	sub fh_write {
159	my $len = syswrite $FH, $write_buf;	239	my $len = syswrite $FH, $write_buf;
160		240
161	substr $write_buf, 0, $len, "";	241	substr $write_buf, 0, $len, "";
162		242
…		…
205	my $id = ++$ID;	285	my $id = ++$ID;
206	$write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args];	286	$write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args];
207	$CB{$id} = $cb;	287	$CB{$id} = $cb;
208		288
209	$fh_w_watcher->start;	289	$fh_w_watcher->start;
210	$SYNC->again unless $SYNC->is_active;
211	}
212
213	sub do_sync {
214	$DB_ENV->txn_checkpoint (0, 0, 0);
215	()
216	}
217
218	sub do_exists {
219	my ($db, $key) = @_;
220
221	utf8::downgrade $key;
222	my $data;
223	(table $db)->db_get ($key, $data) == 0
224	? length $data
225	: ()
226	}
227
228	sub do_get {
229	my ($db, $key) = @_;
230
231	utf8::downgrade $key;
232	my $data;
233	(table $db)->db_get ($key, $data) == 0
234	? $data
235	: ()
236	}
237
238	sub do_put {
239	my ($db, $key, $data) = @_;
240
241	utf8::downgrade $key;
242	utf8::downgrade $data;
243	(table $db)->db_put ($key => $data)
244	}
245
246	sub do_table {
247	my ($db) = @_;
248
249	$db = table $db;
250
251	my $cursor = $db->db_cursor;
252	my %kv;
253	my ($k, $v);
254	$kv{$k} = $v while $cursor->c_get ($k, $v, BerkeleyDB::DB_NEXT) == 0;
255
256	\%kv
257	}
258
259	sub do_get_tile_id {
260	my ($name) = @_;
261
262	my $id;
263	my $table = table "facemap";
264
265	return $id
266	if $table->db_get ($name, $id) == 0;
267
268	for (1..100) {
269	my $txn = $DB_ENV->txn_begin;
270	my $status = $table->db_get (id => $id);
271	if ($status == 0 \|\| $status == BerkeleyDB::DB_NOTFOUND) {
272	$id = ($id \|\| 64) + 1;
273	if ($table->db_put (id => $id) == 0
274	&& $table->db_put ($name => $id) == 0) {
275	$txn->txn_commit;
276
277	return $id;
278	}
279	}
280	$txn->txn_abort;
281	select undef, undef, undef, 0.01 * rand;
282	}
283
284	die "maximum number of transaction retries reached - database problems?";
285	}	290	}
286		291
287	sub do_unlink {	292	sub do_unlink {
288	unlink $_[0];	293	unlink $_[0];
289	}	294	}
…		…
358	local $SIG{__DIE__};	363	local $SIG{__DIE__};
359	local $SIG{__WARN__};	364	local $SIG{__WARN__};
360	eval {	365	eval {
361	close $FH;	366	close $FH;
362		367
363	unless (eval { open_db }) {
364	eval { File::Path::rmtree $DB_HOME };
365	open_db;
366	}
367
368	while () {	368	while () {
369	4 == read $fh, my $len, 4	369	4 == read $fh, my $len, 4
370	or last;	370	or last;
371	$len = unpack "N", $len;	371	$len = unpack "N", $len;
372	$len == read $fh, my $req, $len	372	$len == read $fh, my $req, $len
…		…
384	};	384	};
385		385
386	my $error = $@;	386	my $error = $@;
387		387
388	eval {	388	eval {
389	$DB_ENV->txn_checkpoint (0, 0, 0);
390
391	undef %DB_TABLE;
392	undef $DB_ENV;
393
394	Storable::store_fd [die => $error], $fh;	389	Storable::store_fd [die => $error], $fh;
395	};	390	};
396		391
		392	warn $error
		393	if $error;
		394
397	CFPlus::_exit 0;	395	CFPlus::_exit 0;
398	}	396	}
399		397
400	close $fh;	398	close $fh;
401	CFPlus::fh_nonblocking $FH, 1;	399	CFPlus::fh_nonblocking $FH, 1;
402		400
403	$CB{die} = sub { die shift };	401	$CB{die} = sub { die shift };
404		402
405	$fh_r_watcher = EV::io $FH, EV::READ , \&fh_read;	403	$fh_r_watcher = EV::io $FH, EV::READ , \&fh_read;
406	$fh_w_watcher = EV::io $FH, EV::WRITE, \&fh_write;	404	$fh_w_watcher = EV::io $FH, EV::WRITE, \&fh_write;
407	$SYNC->again unless $SYNC->is_active;
408	}	405	}
409		406
410	sub stop {	407	sub stop {
411	close $FH;	408	close $FH;
412	}	409	}

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Comparing deliantra/Deliantra-Client/DC/DB.pm (file contents): Revision 1.22 by root, Tue Nov 13 02:47:30 2007 UTC vs. Revision 1.25 by root, Tue Dec 11 03:38:36 2007 UTC

Diff Legend

Comparing deliantra/Deliantra-Client/DC/DB.pm (file contents):
Revision 1.22 by root, Tue Nov 13 02:47:30 2007 UTC vs.
Revision 1.25 by root, Tue Dec 11 03:38:36 2007 UTC