1 | =head1 NAME |
1 | =head1 NAME |
2 | |
2 | |
3 | CFPlus::DB - async. database and filesystem access for cfplus |
3 | DC::DB - async. database and filesystem access for deliantra |
4 | |
4 | |
5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
6 | |
6 | |
7 | use CFPlus::DB; |
7 | use DC::DB; |
8 | |
8 | |
9 | =head1 DESCRIPTION |
9 | =head1 DESCRIPTION |
10 | |
10 | |
11 | =over 4 |
11 | =over 4 |
12 | |
12 | |
13 | =cut |
13 | =cut |
14 | |
14 | |
15 | package CFPlus::DB; |
15 | package DC::DB; |
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 (); |
21 | use Storable (); |
22 | use Config; |
22 | use Config; |
23 | use Event (); |
23 | use BDB; |
24 | |
24 | |
25 | use CFPlus; |
25 | use DC; |
26 | |
26 | |
27 | our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}"; |
27 | our $ODBDIR = "cfplus-" . BDB::VERSION . "-$Config{archname}"; |
|
|
28 | our $DBDIR = "client-" . BDB::VERSION . "-$Config{archname}"; |
|
|
29 | our $DB_HOME = "$Deliantra::VARDIR/$DBDIR"; |
|
|
30 | |
|
|
31 | if (!-e $DB_HOME and -e "$Deliantra::VARDIR/$ODBDIR") { |
|
|
32 | rename "$Deliantra::VARDIR/$ODBDIR", $DB_HOME; |
|
|
33 | print STDERR "INFO: moved old database from $Deliantra::VARDIR/$ODBDIR to $DB_HOME\n"; |
|
|
34 | } |
|
|
35 | |
|
|
36 | if (!-e $DB_HOME and -e "$Deliantra::OLDDIR/$ODBDIR") { |
|
|
37 | rename "$Deliantra::OLDDIR/$DBDIR", $DB_HOME; |
|
|
38 | print STDERR "INFO: moved old database from $Deliantra::OLDDIR/$ODBDIR to $DB_HOME\n"; |
|
|
39 | } |
|
|
40 | |
|
|
41 | BDB::max_poll_time 0.03; |
|
|
42 | BDB::max_parallel 1; |
|
|
43 | |
|
|
44 | our $DB_ENV; |
|
|
45 | our $DB_STATE; |
|
|
46 | our %DB_TABLE; |
|
|
47 | |
|
|
48 | sub try_open_db { |
|
|
49 | mkdir $DB_HOME, 0777; |
|
|
50 | |
|
|
51 | $DB_ENV = db_env_create; |
|
|
52 | |
|
|
53 | $DB_ENV->set_errfile (\*STDERR); |
|
|
54 | $DB_ENV->set_msgfile (\*STDERR); |
|
|
55 | $DB_ENV->set_verbose (-1, 1); |
|
|
56 | |
|
|
57 | $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::LOG_AUTOREMOVE | BDB::TXN_WRITE_NOSYNC); |
|
|
58 | $DB_ENV->set_cachesize (0, 2048 * 1024, 0); |
|
|
59 | |
|
|
60 | db_env_open $DB_ENV, $DB_HOME, |
|
|
61 | BDB::CREATE | BDB::REGISTER | BDB::RECOVER | BDB::INIT_MPOOL | BDB::INIT_LOCK | BDB::INIT_TXN, |
|
|
62 | 0666; |
|
|
63 | |
|
|
64 | $! and die "cannot open database environment $DB_HOME: " . BDB::strerror; |
|
|
65 | |
|
|
66 | 1 |
|
|
67 | } |
|
|
68 | |
|
|
69 | sub table($) { |
|
|
70 | $DB_TABLE{$_[0]} ||= do { |
|
|
71 | my ($table) = @_; |
|
|
72 | |
|
|
73 | $table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge; |
|
|
74 | |
|
|
75 | my $db = db_create $DB_ENV; |
|
|
76 | $db->set_flags (BDB::CHKSUM); |
|
|
77 | |
|
|
78 | db_open $db, undef, $table, undef, BDB::BTREE, |
|
|
79 | BDB::AUTO_COMMIT | BDB::CREATE | BDB::READ_UNCOMMITTED, 0666; |
|
|
80 | |
|
|
81 | $! and "unable to open/create database table $_[0]: ". BDB::strerror; |
|
|
82 | |
|
|
83 | $db |
|
|
84 | } |
|
|
85 | } |
|
|
86 | |
|
|
87 | ############################################################################# |
|
|
88 | |
|
|
89 | our $WATCHER; |
|
|
90 | our $SYNC; |
|
|
91 | our $tilemap; |
|
|
92 | |
|
|
93 | sub exists($$$) { |
|
|
94 | my ($db, $key, $cb) = @_; |
|
|
95 | |
|
|
96 | my $data; |
|
|
97 | db_get table $db, undef, $key, $data, 0, sub { |
|
|
98 | $cb->($! ? () : length $data); |
|
|
99 | }; |
|
|
100 | } |
|
|
101 | |
|
|
102 | sub get($$$) { |
|
|
103 | my ($db, $key, $cb) = @_; |
|
|
104 | |
|
|
105 | my $data; |
|
|
106 | db_get table $db, undef, $key, $data, 0, sub { |
|
|
107 | $cb->($! ? () : $data); |
|
|
108 | }; |
|
|
109 | } |
|
|
110 | |
|
|
111 | sub put($$$$) { |
|
|
112 | my ($db, $key, $data, $cb) = @_; |
|
|
113 | |
|
|
114 | db_put table $db, undef, $key, $data, 0, sub { |
|
|
115 | $cb->($!); |
|
|
116 | $SYNC->again unless $SYNC->is_active; |
|
|
117 | }; |
|
|
118 | } |
|
|
119 | |
|
|
120 | sub do_table { |
|
|
121 | my ($db, $cb) = @_; |
|
|
122 | |
|
|
123 | $db = table $db; |
|
|
124 | |
|
|
125 | my $cursor = $db->cursor; |
|
|
126 | my %kv; |
|
|
127 | |
|
|
128 | for (;;) { |
|
|
129 | db_c_get $cursor, my $k, my $v, BDB::NEXT; |
|
|
130 | last if $!; |
|
|
131 | $kv{$k} = $v; |
|
|
132 | } |
|
|
133 | |
|
|
134 | $cb->(\%kv); |
|
|
135 | } |
|
|
136 | |
|
|
137 | sub do_get_tile_id { |
|
|
138 | my ($name, $cb) = @_; |
|
|
139 | |
|
|
140 | my $table = table "facemap"; |
|
|
141 | my $id; |
|
|
142 | |
|
|
143 | db_get $table, undef, $name, $id, 0; |
|
|
144 | return $cb->($id) unless $!; |
|
|
145 | |
|
|
146 | for (1..100) { |
|
|
147 | my $txn = $DB_ENV->txn_begin; |
|
|
148 | db_get $table, $txn, id => $id, 0; |
|
|
149 | |
|
|
150 | $id = 64 if $id < 64; |
|
|
151 | |
|
|
152 | ++$id; |
|
|
153 | |
|
|
154 | db_put $table, $txn, id => $id, 0; |
|
|
155 | db_txn_finish $txn; |
|
|
156 | |
|
|
157 | $SYNC->again unless $SYNC->is_active; |
|
|
158 | |
|
|
159 | return $cb->($id) unless $!; |
|
|
160 | |
|
|
161 | select undef, undef, undef, 0.01 * rand; |
|
|
162 | } |
|
|
163 | |
|
|
164 | die "maximum number of transaction retries reached - database problems?"; |
|
|
165 | } |
|
|
166 | |
|
|
167 | sub get_tile_id_sync($) { |
|
|
168 | my ($name) = @_; |
|
|
169 | |
|
|
170 | $tilemap->{$name} ||= do { |
|
|
171 | my $id; |
|
|
172 | do_get_tile_id $name, sub { |
|
|
173 | $id = $_[0]; |
|
|
174 | }; |
|
|
175 | BDB::flush; |
|
|
176 | $id |
|
|
177 | } |
|
|
178 | } |
|
|
179 | |
|
|
180 | ############################################################################# |
28 | |
181 | |
29 | sub path_of_res($) { |
182 | sub path_of_res($) { |
30 | utf8::downgrade $_[0]; # bug in unpack "H*" |
183 | utf8::downgrade $_[0]; # bug in unpack "H*" |
31 | "$DB_HOME/res-data-" . unpack "H*", $_[0] |
184 | "$DB_HOME/res-data-" . unpack "H*", $_[0] |
32 | } |
185 | } |
33 | |
186 | |
34 | sub sync { |
187 | sub sync { |
35 | # for debugging |
188 | # for debugging |
36 | #CFPlus::DB::Server::req (sync => sub { }); |
189 | #DC::DB::Server::req (sync => sub { }); |
37 | CFPlus::DB::Server::sync (); |
190 | DC::DB::Server::sync (); |
38 | } |
|
|
39 | |
|
|
40 | sub exists($$$) { |
|
|
41 | CFPlus::DB::Server::req (exists => @_); |
|
|
42 | } |
|
|
43 | |
|
|
44 | sub get($$$) { |
|
|
45 | CFPlus::DB::Server::req (get => @_); |
|
|
46 | } |
|
|
47 | |
|
|
48 | sub put($$$$) { |
|
|
49 | CFPlus::DB::Server::req (put => @_); |
|
|
50 | } |
191 | } |
51 | |
192 | |
52 | sub unlink($$) { |
193 | sub unlink($$) { |
53 | CFPlus::DB::Server::req (unlink => @_); |
194 | DC::DB::Server::req (unlink => @_); |
|
|
195 | } |
|
|
196 | |
|
|
197 | sub read_file($$) { |
|
|
198 | DC::DB::Server::req (read_file => @_); |
54 | } |
199 | } |
55 | |
200 | |
56 | sub write_file($$$) { |
201 | sub write_file($$$) { |
57 | CFPlus::DB::Server::req (write_file => @_); |
202 | DC::DB::Server::req (write_file => @_); |
58 | } |
203 | } |
59 | |
204 | |
60 | sub prefetch_file($$$) { |
205 | sub prefetch_file($$$) { |
61 | CFPlus::DB::Server::req (prefetch_file => @_); |
206 | DC::DB::Server::req (prefetch_file => @_); |
62 | } |
207 | } |
63 | |
208 | |
64 | sub logprint($$$) { |
209 | sub logprint($$$) { |
65 | CFPlus::DB::Server::req (logprint => @_); |
210 | DC::DB::Server::req (logprint => @_); |
66 | } |
211 | } |
67 | |
212 | |
68 | our $tilemap; |
213 | ############################################################################# |
69 | |
214 | |
70 | sub get_tile_id_sync($) { |
|
|
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 | |
|
|
87 | package CFPlus::DB::Server; |
215 | package DC::DB::Server; |
88 | |
216 | |
89 | use strict; |
217 | use strict; |
90 | |
218 | |
|
|
219 | use EV (); |
91 | use Fcntl; |
220 | use Fcntl; |
92 | use BerkeleyDB; |
|
|
93 | |
|
|
94 | our $DB_ENV; |
|
|
95 | our $DB_STATE; |
|
|
96 | our %DB_TABLE; |
|
|
97 | |
|
|
98 | sub 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: $BerkeleyDB::Error"; |
|
|
113 | |
|
|
114 | 1 |
|
|
115 | } |
|
|
116 | |
|
|
117 | sub table($) { |
|
|
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 | |
221 | |
134 | our %CB; |
222 | our %CB; |
135 | our $FH; |
223 | our $FH; |
136 | our $ID = "aaa0"; |
224 | our $ID = "aaa0"; |
137 | our ($fh_r_watcher, $fh_w_watcher); |
225 | our ($fh_r_watcher, $fh_w_watcher); |
138 | our $sync_timer; |
226 | our $sync_timer; |
139 | our $write_buf; |
227 | our $write_buf; |
140 | our $read_buf; |
228 | our $read_buf; |
141 | |
229 | |
142 | our $SYNC = Event->idle (min => 5, max => 60, parked => 1, cb => sub { |
|
|
143 | CFPlus::DB::Server::req (sync => sub { }); |
|
|
144 | $_[0]->w->stop; |
|
|
145 | }); |
|
|
146 | |
|
|
147 | sub fh_write { |
230 | sub fh_write { |
148 | my $len = syswrite $FH, $write_buf; |
231 | my $len = syswrite $FH, $write_buf; |
149 | |
232 | |
150 | substr $write_buf, 0, $len, ""; |
233 | substr $write_buf, 0, $len, ""; |
151 | |
234 | |
… | |
… | |
194 | my $id = ++$ID; |
277 | my $id = ++$ID; |
195 | $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; |
278 | $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; |
196 | $CB{$id} = $cb; |
279 | $CB{$id} = $cb; |
197 | |
280 | |
198 | $fh_w_watcher->start; |
281 | $fh_w_watcher->start; |
199 | $SYNC->start; |
|
|
200 | } |
|
|
201 | |
|
|
202 | sub do_sync { |
|
|
203 | $DB_ENV->txn_checkpoint (0, 0, 0); |
|
|
204 | () |
|
|
205 | } |
|
|
206 | |
|
|
207 | sub do_exists { |
|
|
208 | my ($db, $key) = @_; |
|
|
209 | |
|
|
210 | utf8::downgrade $key; |
|
|
211 | my $data; |
|
|
212 | (table $db)->db_get ($key, $data) == 0 |
|
|
213 | ? length $data |
|
|
214 | : () |
|
|
215 | } |
|
|
216 | |
|
|
217 | sub do_get { |
|
|
218 | my ($db, $key) = @_; |
|
|
219 | |
|
|
220 | utf8::downgrade $key; |
|
|
221 | my $data; |
|
|
222 | (table $db)->db_get ($key, $data) == 0 |
|
|
223 | ? $data |
|
|
224 | : () |
|
|
225 | } |
|
|
226 | |
|
|
227 | sub do_put { |
|
|
228 | my ($db, $key, $data) = @_; |
|
|
229 | |
|
|
230 | utf8::downgrade $key; |
|
|
231 | utf8::downgrade $data; |
|
|
232 | (table $db)->db_put ($key => $data) |
|
|
233 | } |
|
|
234 | |
|
|
235 | sub do_table { |
|
|
236 | my ($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, $v, BerkeleyDB::DB_NEXT) == 0; |
|
|
244 | |
|
|
245 | \%kv |
|
|
246 | } |
|
|
247 | |
|
|
248 | sub do_get_tile_id { |
|
|
249 | my ($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 | } |
282 | } |
274 | |
283 | |
275 | sub do_unlink { |
284 | sub do_unlink { |
276 | unlink $_[0]; |
285 | unlink $_[0]; |
277 | } |
286 | } |
278 | |
287 | |
|
|
288 | sub do_read_file { |
|
|
289 | my ($path) = @_; |
|
|
290 | |
|
|
291 | utf8::downgrade $path; |
|
|
292 | open my $fh, "<:raw", $path |
|
|
293 | or return; |
|
|
294 | sysread $fh, my $buf, -s $fh; |
|
|
295 | |
|
|
296 | $buf |
|
|
297 | } |
|
|
298 | |
279 | sub do_write_file { |
299 | sub do_write_file { |
280 | my ($file, $data) = @_; |
300 | my ($path, $data) = @_; |
281 | |
301 | |
282 | utf8::downgrade $file; |
302 | utf8::downgrade $path; |
283 | utf8::downgrade $data; |
303 | utf8::downgrade $data; |
284 | open my $fh, ">:raw", $file |
304 | open my $fh, ">:raw", $path |
285 | or return; |
305 | or return; |
286 | print $fh $data; |
306 | syswrite $fh, $data; |
287 | close $fh; |
307 | close $fh; |
288 | |
308 | |
289 | 1 |
309 | 1 |
290 | } |
310 | } |
291 | |
311 | |
292 | sub do_prefetch_file { |
312 | sub do_prefetch_file { |
293 | my ($file, $size) = @_; |
313 | my ($path, $size) = @_; |
294 | |
314 | |
295 | utf8::downgrade $file; |
315 | utf8::downgrade $path; |
296 | open my $fh, "<:raw", $file |
316 | open my $fh, "<:raw", $path |
297 | or return; |
317 | or return; |
298 | sysread $fh, my $buf, $size; |
318 | sysread $fh, my $buf, $size; |
299 | |
319 | |
300 | 1 |
320 | 1 |
301 | } |
321 | } |
… | |
… | |
321 | |
341 | |
322 | print { $LOG_FH{$path} } "$ts $line\n" |
342 | print { $LOG_FH{$path} } "$ts $line\n" |
323 | } |
343 | } |
324 | |
344 | |
325 | sub run { |
345 | sub run { |
326 | ($FH, my $fh) = CFPlus::socketpipe; |
346 | ($FH, my $fh) = DC::socketpipe; |
327 | |
347 | |
328 | my $oldfh = select $FH; $| = 1; select $oldfh; |
348 | my $oldfh = select $FH; $| = 1; select $oldfh; |
329 | my $oldfh = select $fh; $| = 1; select $oldfh; |
349 | my $oldfh = select $fh; $| = 1; select $oldfh; |
330 | |
350 | |
331 | my $pid = fork; |
351 | my $pid = fork; |
332 | |
352 | |
333 | if (defined $pid && !$pid) { |
353 | if (defined $pid && !$pid) { |
334 | local $SIG{QUIT}; |
354 | local $SIG{QUIT} = "IGNORE"; |
335 | local $SIG{__DIE__}; |
355 | local $SIG{__DIE__}; |
336 | local $SIG{__WARN__}; |
356 | local $SIG{__WARN__}; |
337 | eval { |
357 | eval { |
338 | close $FH; |
358 | close $FH; |
339 | |
|
|
340 | unless (eval { open_db }) { |
|
|
341 | eval { File::Path::rmtree $DB_HOME }; |
|
|
342 | open_db; |
|
|
343 | } |
|
|
344 | |
359 | |
345 | while () { |
360 | while () { |
346 | 4 == read $fh, my $len, 4 |
361 | 4 == read $fh, my $len, 4 |
347 | or last; |
362 | or last; |
348 | $len = unpack "N", $len; |
363 | $len = unpack "N", $len; |
… | |
… | |
350 | or die "unexpected eof while reading request"; |
365 | or die "unexpected eof while reading request"; |
351 | |
366 | |
352 | $req = Storable::thaw $req; |
367 | $req = Storable::thaw $req; |
353 | |
368 | |
354 | my ($id, $type, @args) = @$req; |
369 | my ($id, $type, @args) = @$req; |
355 | my $cb = CFPlus::DB::Server->can ("do_$type") |
370 | my $cb = DC::DB::Server->can ("do_$type") |
356 | or die "$type: unknown database request type\n"; |
371 | or die "$type: unknown database request type\n"; |
357 | my $res = pack "N/a*", Storable::freeze [$id, $cb->(@args)]; |
372 | my $res = pack "N/a*", Storable::freeze [$id, $cb->(@args)]; |
358 | (syswrite $fh, $res) == length $res |
373 | (syswrite $fh, $res) == length $res |
359 | or die; |
374 | or die "DB::write: $!"; |
360 | } |
375 | } |
361 | }; |
376 | }; |
362 | |
377 | |
363 | my $error = $@; |
378 | my $error = $@; |
364 | |
379 | |
365 | eval { |
380 | eval { |
366 | undef %DB_TABLE; |
|
|
367 | undef $DB_ENV; |
|
|
368 | |
|
|
369 | Storable::store_fd [die => $error], $fh; |
381 | Storable::store_fd [die => $error], $fh; |
370 | }; |
382 | }; |
371 | |
383 | |
|
|
384 | warn $error |
|
|
385 | if $error; |
|
|
386 | |
372 | CFPlus::_exit 0; |
387 | DC::_exit 0; |
373 | } |
388 | } |
374 | |
389 | |
375 | close $fh; |
390 | close $fh; |
376 | CFPlus::fh_nonblocking $FH, 1; |
391 | DC::fh_nonblocking $FH, 1; |
377 | |
392 | |
378 | $CB{die} = sub { die shift }; |
393 | $CB{die} = sub { die shift }; |
379 | |
394 | |
380 | $fh_r_watcher = Event->io (fd => $FH, poll => 'r', nice => 1, cb => \&fh_read); |
395 | $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); |
396 | $fh_w_watcher = EV::io $FH, EV::WRITE, \&fh_write; |
382 | $SYNC->start; |
|
|
383 | } |
397 | } |
384 | |
398 | |
385 | sub stop { |
399 | sub stop { |
386 | close $FH; |
400 | close $FH; |
387 | } |
401 | } |
388 | |
402 | |
|
|
403 | package DC::DB; |
|
|
404 | |
|
|
405 | sub open_db { |
|
|
406 | unless (eval { try_open_db }) { |
|
|
407 | warn "$@";#d# |
|
|
408 | eval { File::Path::rmtree $DB_HOME }; |
|
|
409 | try_open_db; |
|
|
410 | } |
|
|
411 | |
|
|
412 | # fetch the full face table first |
|
|
413 | unless ($tilemap) { |
|
|
414 | do_table facemap => sub { |
|
|
415 | $tilemap = $_[0]; |
|
|
416 | delete $tilemap->{id}; |
|
|
417 | my %maptile = reverse %$tilemap;#d# |
|
|
418 | if ((scalar keys %$tilemap) != (scalar keys %maptile)) {#d# |
|
|
419 | $tilemap = { };#d# |
|
|
420 | DC::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d# |
|
|
421 | }#d# |
|
|
422 | }; |
|
|
423 | } |
|
|
424 | |
|
|
425 | $WATCHER = EV::io BDB::poll_fileno, EV::READ, \&BDB::poll_cb; |
|
|
426 | $SYNC = EV::timer_ns 0, 60, sub { |
|
|
427 | $_[0]->stop; |
|
|
428 | db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { }; |
|
|
429 | }; |
|
|
430 | } |
|
|
431 | |
|
|
432 | END { |
|
|
433 | %DB_TABLE = (); |
|
|
434 | undef $DB_ENV; |
|
|
435 | } |
|
|
436 | |
389 | 1; |
437 | 1; |
390 | |
438 | |
391 | =back |
439 | =back |
392 | |
440 | |
393 | =head1 AUTHOR |
441 | =head1 AUTHOR |