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Comparing deliantra/Deliantra-Client/DC/DB.pm (file contents):
Revision 1.23 by root, Fri Nov 16 04:54:25 2007 UTC vs.
Revision 1.24 by root, Tue Dec 11 02:42:38 2007 UTC

… …
18use utf8; 18use utf8;
19 19
20use Carp (); 20use Carp ();
21use Storable (); 21use Storable ();
22use Config; 22use Config;
23use BDB;
23 24
24use CFPlus; 25use CFPlus;
25 26
26our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}"; 27our $DB_HOME = "$Crossfire::VARDIR/cfplus-" . BDB::VERSION . "-$Config{archname}";
27 28
28sub path_of_res($) { 29our $DB_ENV;
29 utf8::downgrade $_[0]; # bug in unpack "H*" 30our $DB_STATE;
30 "$DB_HOME/res-data-" . unpack "H*", $_[0] 31our %DB_TABLE;
31}
32 32
33sub sync { 33sub 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 $DB_HOME: " . BDB::strerror;
50
51 1
37} 52}
53
54sub table($) {
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 $db
69 }
70}
71
72#############################################################################
73
74unless (eval { open_db }) {
75 warn "$@";#d#
76 eval { File::Path::rmtree $DB_HOME };
77 open_db;
78}
79
80our $WATCHER = EV::io BDB::poll_fileno, EV::READ, \&BDB::poll_cb;
81
82our $SYNC = EV::timer_ns 0, 60, sub {
83 $_[0]->stop;
84 db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { };
85};
86
87our $tilemap;
38 88
39sub exists($$$) { 89sub exists($$$) {
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
43sub get($$$) { 98sub get($$$) {
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
47sub put($$$$) { 107sub put($$$$) {
48 CFPlus::DB::Server::req (put => @_); 108 my ($db, $key, $data, $cb) = @_;
49}
50 109
51sub unlink($$) { 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
55sub read_file($$) { 116sub do_table {
56 CFPlus::DB::Server::req (read_file => @_); 117 my ($db, $cb) = @_;
57}
58 118
59sub write_file($$$) { 119 $db = table $db;
60 CFPlus::DB::Server::req (write_file => @_);
61}
62 120
63sub prefetch_file($$$) { 121 my $cursor = $db->cursor;
64 CFPlus::DB::Server::req (prefetch_file => @_); 122 my %kv;
65}
66 123
67sub logprint($$$) { 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
71our $tilemap; 130 $cb->(\%kv);
131}
132
133sub do_get_tile_id {
134 my ($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 $!;
156
157 select undef, undef, undef, 0.01 * rand;
158 }
159
160 die "maximum number of transaction retries reached - database problems?";
161}
72 162
73sub get_tile_id_sync($) { 163sub 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 $id
95 } 187 }
188}
189
190#############################################################################
191
192sub path_of_res($) {
193 utf8::downgrade $_[0]; # bug in unpack "H*"
194 "$DB_HOME/res-data-" . unpack "H*", $_[0]
195}
196
197sub sync {
198 # for debugging
199 #CFPlus::DB::Server::req (sync => sub { });
200 CFPlus::DB::Server::sync ();
201}
202
203sub unlink($$) {
204 CFPlus::DB::Server::req (unlink => @_);
205}
206
207sub read_file($$) {
208 CFPlus::DB::Server::req (read_file => @_);
209}
210
211sub write_file($$$) {
212 CFPlus::DB::Server::req (write_file => @_);
213}
214
215sub prefetch_file($$$) {
216 CFPlus::DB::Server::req (prefetch_file => @_);
217}
218
219sub logprint($$$) {
220 CFPlus::DB::Server::req (logprint => @_);
96} 221}
97 222
98package CFPlus::DB::Server; 223package CFPlus::DB::Server;
99 224
100use strict; 225use strict;
101 226
102use EV (); 227use EV ();
103use Fcntl; 228use Fcntl;
104use BerkeleyDB;
105
106our $DB_ENV;
107our $DB_STATE;
108our %DB_TABLE;
109
110sub open_db {
111 mkdir $DB_HOME, 0777;
112 my $recover = $BerkeleyDB::db_version >= 4.4
113 ? eval "DB_REGISTER | DB_RECOVER"
114 : 0;
115
116 $DB_ENV = new BerkeleyDB::Env
117 -Home => $DB_HOME,
118 -Cachesize => 8_000_000,
119 -ErrFile => "$DB_HOME/errorlog.txt",
120# -ErrPrefix => "DATABASE",
121 -Verbose => 1,
122 -Flags => DB_CREATE | DB_RECOVER | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_TXN | $recover,
123 -SetFlags => DB_AUTO_COMMIT | DB_LOG_AUTOREMOVE | DB_TXN_WRITE_NOSYNC,
124 or die "unable to create/open database home $DB_HOME: $BerkeleyDB::Error";
125
126 1
127}
128
129sub table($) {
130 $DB_TABLE{$_[0]} ||= do {
131 my ($table) = @_;
132
133 $table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge;
134
135 new BerkeleyDB::Btree
136 -Env => $DB_ENV,
137 -Filename => $table,
138# -Filename => "database",
139# -Subname => $table,
140 -Property => DB_CHKSUM,
141 -Flags => DB_AUTO_COMMIT | DB_CREATE | DB_UPGRADE,
142 or die "unable to create/open database table $_[0]: $BerkeleyDB::Error"
143 }
144}
145 229
146our %CB; 230our %CB;
147our $FH; 231our $FH;
148our $ID = "aaa0"; 232our $ID = "aaa0";
149our ($fh_r_watcher, $fh_w_watcher); 233our ($fh_r_watcher, $fh_w_watcher);
150our $sync_timer; 234our $sync_timer;
151our $write_buf; 235our $write_buf;
152our $read_buf; 236our $read_buf;
153 237
154our $SYNC = EV::timer_ns 0, 60, sub {
155 $_[0]->stop;
156 CFPlus::DB::Server::req (sync => sub { });
157};
158
159sub fh_write { 238sub fh_write {
160 my $len = syswrite $FH, $write_buf; 239 my $len = syswrite $FH, $write_buf;
161 240
162 substr $write_buf, 0, $len, ""; 241 substr $write_buf, 0, $len, "";
163 242
… …
206 my $id = ++$ID; 285 my $id = ++$ID;
207 $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; 286 $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args];
208 $CB{$id} = $cb; 287 $CB{$id} = $cb;
209 288
210 $fh_w_watcher->start; 289 $fh_w_watcher->start;
211 $SYNC->again unless $SYNC->is_active;
212}
213
214sub do_sync {
215 $DB_ENV->txn_checkpoint (0, 0, 0);
216 ()
217}
218
219sub do_exists {
220 my ($db, $key) = @_;
221
222 utf8::downgrade $key;
223 my $data;
224 (table $db)->db_get ($key, $data) == 0
225 ? length $data
226 : ()
227}
228
229sub do_get {
230 my ($db, $key) = @_;
231
232 utf8::downgrade $key;
233 my $data;
234 (table $db)->db_get ($key, $data) == 0
235 ? $data
236 : ()
237}
238
239sub do_put {
240 my ($db, $key, $data) = @_;
241
242 utf8::downgrade $key;
243 utf8::downgrade $data;
244 (table $db)->db_put ($key => $data)
245}
246
247sub do_table {
248 my ($db) = @_;
249
250 $db = table $db;
251
252 my $cursor = $db->db_cursor;
253 my %kv;
254 my ($k, $v);
255 $kv{$k} = $v while $cursor->c_get ($k, $v, BerkeleyDB::DB_NEXT) == 0;
256
257 \%kv
258}
259
260sub do_get_tile_id {
261 my ($name) = @_;
262
263 my $id;
264 my $table = table "facemap";
265
266 return $id
267 if $table->db_get ($name, $id) == 0;
268
269 for (1..100) {
270 my $txn = $DB_ENV->txn_begin;
271 my $status = $table->db_get (id => $id);
272 if ($status == 0 || $status == BerkeleyDB::DB_NOTFOUND) {
273 $id = ($id || 64) + 1;
274 if ($table->db_put (id => $id) == 0
275 && $table->db_put ($name => $id) == 0) {
276 $txn->txn_commit;
277
278 return $id;
279 }
280 }
281 $txn->txn_abort;
282 select undef, undef, undef, 0.01 * rand;
283 }
284
285 die "maximum number of transaction retries reached - database problems?";
286} 290}
287 291
288sub do_unlink { 292sub do_unlink {
289 unlink $_[0]; 293 unlink $_[0];
290} 294}
… …
359 local $SIG{__DIE__}; 363 local $SIG{__DIE__};
360 local $SIG{__WARN__}; 364 local $SIG{__WARN__};
361 eval { 365 eval {
362 close $FH; 366 close $FH;
363 367
364 unless (eval { open_db }) {
365 eval { File::Path::rmtree $DB_HOME };
366 open_db;
367 }
368
369 while () { 368 while () {
370 4 == read $fh, my $len, 4 369 4 == read $fh, my $len, 4
371 or last; 370 or last;
372 $len = unpack "N", $len; 371 $len = unpack "N", $len;
373 $len == read $fh, my $req, $len 372 $len == read $fh, my $req, $len
… …
385 }; 384 };
386 385
387 my $error = $@; 386 my $error = $@;
388 387
389 eval { 388 eval {
390 $DB_ENV->txn_checkpoint (0, 0, 0);
391
392 undef %DB_TABLE;
393 undef $DB_ENV;
394
395 Storable::store_fd [die => $error], $fh; 389 Storable::store_fd [die => $error], $fh;
396 }; 390 };
397 391
392 warn $error;
393
398 CFPlus::_exit 0; 394 CFPlus::_exit 0;
399 } 395 }
400 396
401 close $fh; 397 close $fh;
402 CFPlus::fh_nonblocking $FH, 1; 398 CFPlus::fh_nonblocking $FH, 1;
403 399
404 $CB{die} = sub { die shift }; 400 $CB{die} = sub { die shift };
405 401
406 $fh_r_watcher = EV::io $FH, EV::READ , \&fh_read; 402 $fh_r_watcher = EV::io $FH, EV::READ , \&fh_read;
407 $fh_w_watcher = EV::io $FH, EV::WRITE, \&fh_write; 403 $fh_w_watcher = EV::io $FH, EV::WRITE, \&fh_write;
408 $SYNC->again unless $SYNC->is_active;
409} 404}
410 405
411sub stop { 406sub stop {
412 close $FH; 407 close $FH;
413} 408}

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