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Comparing deliantra/Deliantra-Client/DC/DB.pm (file contents):
Revision 1.15 by root, Mon Aug 6 02:11:45 2007 UTC vs.
Revision 1.26 by root, Wed Dec 26 18:09:30 2007 UTC

… …
18use utf8; 18use utf8;
19 19
20use Carp (); 20use Carp ();
21use Storable (); 21use Storable ();
22use Config; 22use Config;
23use Event (); 23use BDB;
24 24
25use CFPlus; 25use CFPlus;
26 26
27our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}"; 27our $DB_HOME = "$Deliantra::VARDIR/cfplus-" . BDB::VERSION . "-$Config{archname}";
28
29our $DB_ENV;
30our $DB_STATE;
31our %DB_TABLE;
32
33sub open_db {
34 mkdir $DB_HOME, 0777;
35
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 $DB_HOME: " . BDB::strerror;
50
51 1
52}
53
54sub table($) {
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;
88
89sub exists($$$) {
90 my ($db, $key, $cb) = @_;
91
92 my $data;
93 db_get table $db, undef, $key, $data, 0, sub {
94 $cb->($! ? () : length $data);
95 };
96}
97
98sub get($$$) {
99 my ($db, $key, $cb) = @_;
100
101 my $data;
102 db_get table $db, undef, $key, $data, 0, sub {
103 $cb->($! ? () : $data);
104 };
105}
106
107sub put($$$$) {
108 my ($db, $key, $data, $cb) = @_;
109
110 db_put table $db, undef, $key, $data, 0, sub {
111 $cb->($!);
112 $SYNC->again unless $SYNC->is_active;
113 };
114}
115
116sub do_table {
117 my ($db, $cb) = @_;
118
119 $db = table $db;
120
121 my $cursor = $db->cursor;
122 my %kv;
123
124 for (;;) {
125 db_c_get $cursor, my $k, my $v, BDB::NEXT;
126 last if $!;
127 $kv{$k} = $v;
128 }
129
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}
162
163sub get_tile_id_sync($) {
164 my ($name) = @_;
165
166 # fetch the full face table first
167 unless ($tilemap) {
168 do_table facemap => sub {
169 $tilemap = $_[0];
170 delete $tilemap->{id};
171 my %maptile = reverse %$tilemap;#d#
172 if ((scalar keys %$tilemap) != (scalar keys %maptile)) {#d#
173 $tilemap = { };#d#
174 CFPlus::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d#
175 }#d#
176 };
177 BDB::flush;
178 }
179
180 $tilemap->{$name} ||= do {
181 my $id;
182 do_get_tile_id $name, sub {
183 $id = $_[0];
184 };
185 BDB::flush;
186 $id
187 }
188}
189
190#############################################################################
28 191
29sub path_of_res($) { 192sub path_of_res($) {
30 utf8::downgrade $_[0]; # bug in unpack "H*" 193 utf8::downgrade $_[0]; # bug in unpack "H*"
31 "$DB_HOME/res-data-" . unpack "H*", $_[0] 194 "$DB_HOME/res-data-" . unpack "H*", $_[0]
32} 195}
… …
35 # for debugging 198 # for debugging
36 #CFPlus::DB::Server::req (sync => sub { }); 199 #CFPlus::DB::Server::req (sync => sub { });
37 CFPlus::DB::Server::sync (); 200 CFPlus::DB::Server::sync ();
38} 201}
39 202
40sub exists($$$) {
41 CFPlus::DB::Server::req (exists => @_);
42}
43
44sub get($$$) {
45 CFPlus::DB::Server::req (get => @_);
46}
47
48sub put($$$$) {
49 CFPlus::DB::Server::req (put => @_);
50}
51
52sub unlink($$) { 203sub unlink($$) {
53 CFPlus::DB::Server::req (unlink => @_); 204 CFPlus::DB::Server::req (unlink => @_);
54} 205}
55 206
207sub read_file($$) {
208 CFPlus::DB::Server::req (read_file => @_);
209}
210
56sub write_file($$$) { 211sub write_file($$$) {
57 CFPlus::DB::Server::req (write_file => @_); 212 CFPlus::DB::Server::req (write_file => @_);
58} 213}
59 214
60sub prefetch_file($$$) { 215sub prefetch_file($$$) {
… …
63 218
64sub logprint($$$) { 219sub logprint($$$) {
65 CFPlus::DB::Server::req (logprint => @_); 220 CFPlus::DB::Server::req (logprint => @_);
66} 221}
67 222
68our $tilemap;
69
70sub get_tile_id_sync($) {
71 my ($hash) = @_;
72
73 # fetch the full face table first
74 unless ($tilemap) {
75 CFPlus::DB::Server::req (table => facemap => sub { $tilemap = $_[0] });
76 sync;
77 }
78
79 $tilemap->{$hash} ||= do {
80 my $id;
81 CFPlus::DB::Server::req (get_tile_id => $hash, sub { $id = $_[0] });
82 sync;
83 $id
84 }
85}
86
87package CFPlus::DB::Server; 223package CFPlus::DB::Server;
88 224
89use strict; 225use strict;
90 226
227use EV ();
91use Fcntl; 228use Fcntl;
92use BerkeleyDB;
93
94our $DB_ENV;
95our $DB_STATE;
96our %DB_TABLE;
97
98sub open_db {
99 mkdir $DB_HOME, 0777;
100 my $recover = $BerkeleyDB::db_version >= 4.4
101 ? eval "DB_REGISTER | DB_RECOVER"
102 : 0;
103
104 $DB_ENV = new BerkeleyDB::Env
105 -Home => $DB_HOME,
106 -Cachesize => 8_000_000,
107 -ErrFile => "$DB_HOME/errorlog.txt",
108# -ErrPrefix => "DATABASE",
109 -Verbose => 1,
110 -Flags => DB_CREATE | DB_RECOVER | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_TXN | $recover,
111 -SetFlags => DB_AUTO_COMMIT | DB_LOG_AUTOREMOVE,
112 or die "unable to create/open database home $DB_HOME: $BerkeleyDB::Error";
113
114 1
115}
116
117sub table($) {
118 $DB_TABLE{$_[0]} ||= do {
119 my ($table) = @_;
120
121 $table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge;
122
123 new BerkeleyDB::Btree
124 -Env => $DB_ENV,
125 -Filename => $table,
126# -Filename => "database",
127# -Subname => $table,
128 -Property => DB_CHKSUM,
129 -Flags => DB_CREATE | DB_UPGRADE,
130 or die "unable to create/open database table $_[0]: $BerkeleyDB::Error"
131 }
132}
133 229
134our %CB; 230our %CB;
135our $FH; 231our $FH;
136our $ID = "aaa0"; 232our $ID = "aaa0";
137our ($fh_r_watcher, $fh_w_watcher); 233our ($fh_r_watcher, $fh_w_watcher);
138our $sync_timer; 234our $sync_timer;
139our $write_buf; 235our $write_buf;
140our $read_buf; 236our $read_buf;
141 237
142our $SYNC = Event->idle (min => 5, max => 60, parked => 1, cb => sub {
143 CFPlus::DB::Server::req (sync => sub { });
144 $_[0]->w->stop;
145});
146
147sub fh_write { 238sub fh_write {
148 my $len = syswrite $FH, $write_buf; 239 my $len = syswrite $FH, $write_buf;
149 240
150 substr $write_buf, 0, $len, ""; 241 substr $write_buf, 0, $len, "";
151 242
… …
194 my $id = ++$ID; 285 my $id = ++$ID;
195 $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; 286 $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args];
196 $CB{$id} = $cb; 287 $CB{$id} = $cb;
197 288
198 $fh_w_watcher->start; 289 $fh_w_watcher->start;
199 $SYNC->start;
200}
201
202sub do_sync {
203 $DB_ENV->txn_checkpoint (0, 0, 0);
204 ()
205}
206
207sub do_exists {
208 my ($db, $key) = @_;
209
210 utf8::downgrade $key;
211 my $data;
212 (table $db)->db_get ($key, $data) == 0
213 ? length $data
214 : ()
215}
216
217sub do_get {
218 my ($db, $key) = @_;
219
220 utf8::downgrade $key;
221 my $data;
222 (table $db)->db_get ($key, $data) == 0
223 ? $data
224 : ()
225}
226
227sub do_put {
228 my ($db, $key, $data) = @_;
229
230 utf8::downgrade $key;
231 utf8::downgrade $data;
232 (table $db)->db_put ($key => $data)
233}
234
235sub do_table {
236 my ($db) = @_;
237
238 $db = table $db;
239
240 my $cursor = $db->db_cursor;
241 my %kv;
242 my ($k, $v);
243 $kv{$k} = $v while $cursor->c_get ($k, $v, BerkeleyDB::DB_NEXT) == 0;
244
245 \%kv
246}
247
248sub do_get_tile_id {
249 my ($hash) = @_;
250
251 my $id;
252 my $table = table "facemap";
253
254 return $id
255 if $table->db_get ($hash, $id) == 0;
256
257 for (1..100) {
258 my $txn = $DB_ENV->txn_begin;
259 my $status = $table->db_get (id => $id);
260 if ($status == 0 || $status == BerkeleyDB::DB_NOTFOUND) {
261 $id = ($id || 64) + 1;
262 if ($table->db_put (id => $id) == 0
263 && $table->db_put ($hash => $id) == 0) {
264 $txn->txn_commit;
265
266 return $id;
267 }
268 }
269 $txn->txn_abort;
270 }
271
272 die "maximum number of transaction retries reached - database problems?";
273} 290}
274 291
275sub do_unlink { 292sub do_unlink {
276 unlink $_[0]; 293 unlink $_[0];
277} 294}
278 295
296sub do_read_file {
297 my ($path) = @_;
298
299 utf8::downgrade $path;
300 open my $fh, "<:raw", $path
301 or return;
302 sysread $fh, my $buf, -s $fh;
303
304 $buf
305}
306
279sub do_write_file { 307sub do_write_file {
280 my ($file, $data) = @_; 308 my ($path, $data) = @_;
281 309
282 utf8::downgrade $file; 310 utf8::downgrade $path;
283 utf8::downgrade $data; 311 utf8::downgrade $data;
284 open my $fh, ">:raw", $file 312 open my $fh, ">:raw", $path
285 or return; 313 or return;
286 print $fh $data; 314 syswrite $fh, $data;
287 close $fh; 315 close $fh;
288 316
289 1 317 1
290} 318}
291 319
292sub do_prefetch_file { 320sub do_prefetch_file {
293 my ($file, $size) = @_; 321 my ($path, $size) = @_;
294 322
295 utf8::downgrade $file; 323 utf8::downgrade $path;
296 open my $fh, "<:raw", $file 324 open my $fh, "<:raw", $path
297 or return; 325 or return;
298 sysread $fh, my $buf, $size; 326 sysread $fh, my $buf, $size;
299 327
300 1 328 1
301} 329}
… …
335 local $SIG{__DIE__}; 363 local $SIG{__DIE__};
336 local $SIG{__WARN__}; 364 local $SIG{__WARN__};
337 eval { 365 eval {
338 close $FH; 366 close $FH;
339 367
340 unless (eval { open_db }) {
341 eval { File::Path::rmtree $DB_HOME };
342 open_db;
343 }
344
345 while () { 368 while () {
346 4 == read $fh, my $len, 4 369 4 == read $fh, my $len, 4
347 or last; 370 or last;
348 $len = unpack "N", $len; 371 $len = unpack "N", $len;
349 $len == read $fh, my $req, $len 372 $len == read $fh, my $req, $len
… …
354 my ($id, $type, @args) = @$req; 377 my ($id, $type, @args) = @$req;
355 my $cb = CFPlus::DB::Server->can ("do_$type") 378 my $cb = CFPlus::DB::Server->can ("do_$type")
356 or die "$type: unknown database request type\n"; 379 or die "$type: unknown database request type\n";
357 my $res = pack "N/a*", Storable::freeze [$id, $cb->(@args)]; 380 my $res = pack "N/a*", Storable::freeze [$id, $cb->(@args)];
358 (syswrite $fh, $res) == length $res 381 (syswrite $fh, $res) == length $res
359 or die; 382 or die "DB::write: $!";
360 } 383 }
361 }; 384 };
362 385
363 my $error = $@; 386 my $error = $@;
364 387
365 eval { 388 eval {
366 undef %DB_TABLE;
367 undef $DB_ENV;
368
369 Storable::store_fd [die => $error], $fh; 389 Storable::store_fd [die => $error], $fh;
370 }; 390 };
371 391
392 warn $error
393 if $error;
394
372 CFPlus::_exit 0; 395 CFPlus::_exit 0;
373 } 396 }
374 397
375 close $fh; 398 close $fh;
376 CFPlus::fh_nonblocking $FH, 1; 399 CFPlus::fh_nonblocking $FH, 1;
377 400
378 $CB{die} = sub { die shift }; 401 $CB{die} = sub { die shift };
379 402
380 $fh_r_watcher = Event->io (fd => $FH, poll => 'r', nice => 1, cb => \&fh_read); 403 $fh_r_watcher = EV::io $FH, EV::READ , \&fh_read;
381 $fh_w_watcher = Event->io (fd => $FH, poll => 'w', nice => -1, parked => 1, cb => \&fh_write); 404 $fh_w_watcher = EV::io $FH, EV::WRITE, \&fh_write;
382 $SYNC->start;
383} 405}
384 406
385sub stop { 407sub stop {
386 close $FH; 408 close $FH;
387} 409}

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