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 File::Path (); |
20 | use Carp (); |
21 | use Carp (); |
21 | use AnyEvent (); |
|
|
22 | use Storable (); |
22 | use Storable (); |
23 | use Config; |
23 | use Config; |
|
|
24 | use BDB; |
24 | |
25 | |
25 | use CFPlus; |
26 | use DC; |
26 | |
27 | |
27 | our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}"; |
28 | our $ODBDIR = "cfplus-" . BDB::VERSION . "-$Config{archname}"; |
|
|
29 | our $DBDIR = "client-" . BDB::VERSION . "-$Config{archname}"; |
|
|
30 | our $DB_HOME = "$Deliantra::VARDIR/$DBDIR"; |
28 | |
31 | |
29 | sub path_of($) { |
32 | unless (-d $DB_HOME) { |
30 | "$DB_HOME/data-$_[0]" |
33 | if (-d "$Deliantra::VARDIR/$ODBDIR") { |
31 | } |
34 | rename "$Deliantra::VARDIR/$ODBDIR", $DB_HOME; |
32 | |
35 | print STDERR "INFO: moved old database from $Deliantra::VARDIR/$ODBDIR to $DB_HOME\n"; |
33 | sub sync { |
36 | } elsif (-d "$Deliantra::OLDDIR/$ODBDIR") { |
34 | # for debugging |
37 | rename "$Deliantra::OLDDIR/$DBDIR", $DB_HOME; |
35 | #CFPlus::DB::Server::req (sync => sub { }); |
38 | print STDERR "INFO: moved old database from $Deliantra::OLDDIR/$ODBDIR to $DB_HOME\n"; |
36 | CFPlus::DB::Server::sync (); |
39 | } else { |
37 | } |
40 | File::Path::mkpath [$DB_HOME] |
38 | |
41 | or die "unable to create database directory $DB_HOME: $!"; |
39 | sub exists($$$) { |
|
|
40 | CFPlus::DB::Server::req (exists => @_); |
|
|
41 | } |
|
|
42 | |
|
|
43 | sub get($$$) { |
|
|
44 | CFPlus::DB::Server::req (get => @_); |
|
|
45 | } |
|
|
46 | |
|
|
47 | sub put($$$$) { |
|
|
48 | CFPlus::DB::Server::req (put => @_); |
|
|
49 | } |
|
|
50 | |
|
|
51 | sub unlink($$) { |
|
|
52 | CFPlus::DB::Server::req (unlink => @_); |
|
|
53 | } |
|
|
54 | |
|
|
55 | sub write_file($$$) { |
|
|
56 | CFPlus::DB::Server::req (write_file => @_); |
|
|
57 | } |
|
|
58 | |
|
|
59 | our $tilemap; |
|
|
60 | |
|
|
61 | sub get_tile_id_sync($) { |
|
|
62 | my ($hash) = @_; |
|
|
63 | |
|
|
64 | # fetch the full face table first |
|
|
65 | unless ($tilemap) { |
|
|
66 | CFPlus::DB::Server::req (table => facemap => sub { $tilemap = $_[0] }); |
|
|
67 | sync; |
|
|
68 | } |
42 | } |
69 | |
|
|
70 | $tilemap->{$hash} ||= do { |
|
|
71 | my $id; |
|
|
72 | CFPlus::DB::Server::req (get_tile_id => $hash, sub { $id = $_[0] }); |
|
|
73 | sync; |
|
|
74 | $id |
|
|
75 | } |
|
|
76 | } |
43 | } |
77 | |
44 | |
78 | package CFPlus::DB::Server; |
45 | BDB::max_poll_time 0.03; |
79 | |
46 | BDB::max_parallel 1; |
80 | use strict; |
|
|
81 | |
|
|
82 | use Fcntl; |
|
|
83 | use BerkeleyDB; |
|
|
84 | |
47 | |
85 | our $DB_ENV; |
48 | our $DB_ENV; |
86 | our $DB_STATE; |
49 | our $DB_STATE; |
87 | our %DB_TABLE; |
50 | our %DB_TABLE; |
|
|
51 | our $TILE_SEQ; |
88 | |
52 | |
89 | sub open_db { |
53 | sub try_open_db { |
90 | mkdir $DB_HOME, 0777; |
54 | File::Path::mkpath [$DB_HOME]; |
91 | my $recover = $BerkeleyDB::db_version >= 4.4 |
55 | |
92 | ? eval "DB_REGISTER | DB_RECOVER" |
56 | $DB_ENV = db_env_create; |
|
|
57 | |
|
|
58 | $DB_ENV->set_errfile (\*STDERR); |
|
|
59 | $DB_ENV->set_msgfile (\*STDERR); |
|
|
60 | $DB_ENV->set_verbose (-1, 1); |
|
|
61 | |
|
|
62 | $DB_ENV->set_flags (BDB::AUTO_COMMIT | BDB::LOG_AUTOREMOVE | BDB::TXN_WRITE_NOSYNC); |
|
|
63 | $DB_ENV->set_cachesize (0, 2048 * 1024, 0); |
|
|
64 | |
|
|
65 | db_env_open $DB_ENV, $DB_HOME, |
|
|
66 | BDB::CREATE | BDB::REGISTER | BDB::RECOVER | BDB::INIT_MPOOL | BDB::INIT_LOCK | BDB::INIT_TXN, |
93 | : 0; |
67 | 0666; |
94 | |
68 | |
95 | $DB_ENV = new BerkeleyDB::Env |
69 | $! and die "cannot open database environment $DB_HOME: " . BDB::strerror; |
96 | -Home => $DB_HOME, |
|
|
97 | -Cachesize => 8_000_000, |
|
|
98 | -ErrFile => "$DB_HOME/errorlog.txt", |
|
|
99 | # -ErrPrefix => "DATABASE", |
|
|
100 | -Verbose => 1, |
|
|
101 | -Flags => DB_CREATE | DB_RECOVER | DB_INIT_MPOOL | DB_INIT_LOCK | DB_INIT_TXN | $recover, |
|
|
102 | -SetFlags => DB_AUTO_COMMIT | DB_LOG_AUTOREMOVE, |
|
|
103 | or die "unable to create/open database home $DB_HOME: $BerkeleyDB::Error"; |
|
|
104 | |
70 | |
105 | 1 |
71 | 1 |
106 | } |
72 | } |
107 | |
73 | |
108 | sub table($) { |
74 | sub table($) { |
109 | $DB_TABLE{$_[0]} ||= do { |
75 | $DB_TABLE{$_[0]} ||= do { |
110 | my ($table) = @_; |
76 | my ($table) = @_; |
111 | |
77 | |
112 | $table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge; |
78 | $table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge; |
113 | |
79 | |
114 | new BerkeleyDB::Btree |
80 | my $db = db_create $DB_ENV; |
115 | -Env => $DB_ENV, |
81 | $db->set_flags (BDB::CHKSUM); |
116 | -Filename => $table, |
82 | |
117 | # -Filename => "database", |
83 | db_open $db, undef, $table, undef, BDB::BTREE, |
118 | # -Subname => $table, |
84 | BDB::AUTO_COMMIT | BDB::CREATE | BDB::READ_UNCOMMITTED, 0666; |
119 | -Property => DB_CHKSUM, |
85 | |
120 | -Flags => DB_CREATE | DB_UPGRADE, |
86 | $! and "unable to open/create database table $_[0]: ". BDB::strerror; |
121 | or die "unable to create/open database table $_[0]: $BerkeleyDB::Error" |
87 | |
|
|
88 | $db |
|
|
89 | } |
|
|
90 | } |
|
|
91 | |
|
|
92 | ############################################################################# |
|
|
93 | |
|
|
94 | our $WATCHER; |
|
|
95 | our $SYNC; |
|
|
96 | our $facemap; |
|
|
97 | |
|
|
98 | sub exists($$$) { |
|
|
99 | my ($db, $key, $cb) = @_; |
|
|
100 | |
|
|
101 | my $data; |
|
|
102 | db_get table $db, undef, $key, $data, 0, sub { |
|
|
103 | $cb->($! ? () : length $data); |
122 | } |
104 | }; |
123 | } |
105 | } |
124 | |
106 | |
125 | our $SYNC_INTERVAL = 60; |
107 | sub get($$$) { |
|
|
108 | my ($db, $key, $cb) = @_; |
|
|
109 | |
|
|
110 | my $data; |
|
|
111 | db_get table $db, undef, $key, $data, 0, sub { |
|
|
112 | $cb->($! ? () : $data); |
|
|
113 | }; |
|
|
114 | } |
|
|
115 | |
|
|
116 | sub put($$$$) { |
|
|
117 | my ($db, $key, $data, $cb) = @_; |
|
|
118 | |
|
|
119 | db_put table $db, undef, $key, $data, 0, sub { |
|
|
120 | $cb->($!); |
|
|
121 | $SYNC->again unless $SYNC->is_active; |
|
|
122 | }; |
|
|
123 | } |
|
|
124 | |
|
|
125 | sub do_table { |
|
|
126 | my ($db, $cb) = @_; |
|
|
127 | |
|
|
128 | $db = table $db; |
|
|
129 | |
|
|
130 | my $cursor = $db->cursor; |
|
|
131 | my %kv; |
|
|
132 | |
|
|
133 | for (;;) { |
|
|
134 | db_c_get $cursor, my $k, my $v, BDB::NEXT; |
|
|
135 | last if $!; |
|
|
136 | $kv{$k} = $v; |
|
|
137 | } |
|
|
138 | |
|
|
139 | $cb->(\%kv); |
|
|
140 | } |
|
|
141 | |
|
|
142 | sub do_get_tile_id { |
|
|
143 | my ($name, $cb) = @_; |
|
|
144 | |
|
|
145 | my $table = table "facemap"; |
|
|
146 | my $id; |
|
|
147 | |
|
|
148 | db_get $table, undef, $name => $id, 0; |
|
|
149 | $! or return $cb->($id); |
|
|
150 | |
|
|
151 | unless ($TILE_SEQ) { |
|
|
152 | $TILE_SEQ = $table->sequence; |
|
|
153 | $TILE_SEQ->initial_value (64); |
|
|
154 | $TILE_SEQ->set_cachesize (0); |
|
|
155 | db_sequence_open $TILE_SEQ, undef, "id", BDB::CREATE; |
|
|
156 | } |
|
|
157 | |
|
|
158 | db_sequence_get $TILE_SEQ, undef, 1, my $id; |
|
|
159 | |
|
|
160 | die "unable to allocate tile id: $!" |
|
|
161 | if $!; |
|
|
162 | |
|
|
163 | db_put $table, undef, $name => $id, 0; |
|
|
164 | $cb->($id); |
|
|
165 | |
|
|
166 | } |
|
|
167 | |
|
|
168 | sub get_tile_id_sync($) { |
|
|
169 | my ($name) = @_; |
|
|
170 | |
|
|
171 | $facemap->{$name} ||= do { |
|
|
172 | my $id; |
|
|
173 | do_get_tile_id $name, sub { |
|
|
174 | $id = $_[0]; |
|
|
175 | }; |
|
|
176 | BDB::flush; |
|
|
177 | $id |
|
|
178 | } |
|
|
179 | } |
|
|
180 | |
|
|
181 | ############################################################################# |
|
|
182 | |
|
|
183 | sub path_of_res($) { |
|
|
184 | utf8::downgrade $_[0]; # bug in unpack "H*" |
|
|
185 | "$DB_HOME/res-data-" . unpack "H*", $_[0] |
|
|
186 | } |
|
|
187 | |
|
|
188 | sub sync { |
|
|
189 | # for debugging |
|
|
190 | #DC::DB::Server::req (sync => sub { }); |
|
|
191 | DC::DB::Server::sync (); |
|
|
192 | } |
|
|
193 | |
|
|
194 | sub unlink($$) { |
|
|
195 | DC::DB::Server::req (unlink => @_); |
|
|
196 | } |
|
|
197 | |
|
|
198 | sub read_file($$) { |
|
|
199 | DC::DB::Server::req (read_file => @_); |
|
|
200 | } |
|
|
201 | |
|
|
202 | sub write_file($$$) { |
|
|
203 | DC::DB::Server::req (write_file => @_); |
|
|
204 | } |
|
|
205 | |
|
|
206 | sub prefetch_file($$$) { |
|
|
207 | DC::DB::Server::req (prefetch_file => @_); |
|
|
208 | } |
|
|
209 | |
|
|
210 | sub logprint($$$) { |
|
|
211 | DC::DB::Server::req (logprint => @_); |
|
|
212 | } |
|
|
213 | |
|
|
214 | ############################################################################# |
|
|
215 | |
|
|
216 | package DC::DB::Server; |
|
|
217 | |
|
|
218 | use strict; |
|
|
219 | |
|
|
220 | use EV (); |
|
|
221 | use Fcntl; |
126 | |
222 | |
127 | our %CB; |
223 | our %CB; |
128 | our $FH; |
224 | our $FH; |
129 | our $ID = "aaa0"; |
225 | our $ID = "aaa0"; |
130 | our ($fh_r_watcher, $fh_w_watcher); |
226 | our ($fh_r_watcher, $fh_w_watcher); |
… | |
… | |
135 | sub fh_write { |
231 | sub fh_write { |
136 | my $len = syswrite $FH, $write_buf; |
232 | my $len = syswrite $FH, $write_buf; |
137 | |
233 | |
138 | substr $write_buf, 0, $len, ""; |
234 | substr $write_buf, 0, $len, ""; |
139 | |
235 | |
140 | undef $fh_w_watcher |
236 | $fh_w_watcher->stop |
141 | unless length $write_buf; |
237 | unless length $write_buf; |
142 | } |
238 | } |
143 | |
239 | |
144 | sub fh_read { |
240 | sub fh_read { |
145 | my $status = sysread $FH, $read_buf, 16384, length $read_buf; |
241 | my $status = sysread $FH, $read_buf, 16384, length $read_buf; |
… | |
… | |
181 | |
277 | |
182 | my $id = ++$ID; |
278 | my $id = ++$ID; |
183 | $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; |
279 | $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; |
184 | $CB{$id} = $cb; |
280 | $CB{$id} = $cb; |
185 | |
281 | |
186 | $fh_w_watcher = AnyEvent->io (fh => $FH, poll => 'w', cb => \&fh_write); |
282 | $fh_w_watcher->start; |
187 | } |
|
|
188 | |
|
|
189 | sub sync_tick { |
|
|
190 | req "sync", sub { }; |
|
|
191 | $sync_timer = AnyEvent->timer (after => $SYNC_INTERVAL, cb => \&sync_tick); |
|
|
192 | } |
|
|
193 | |
|
|
194 | sub do_sync { |
|
|
195 | $DB_ENV->txn_checkpoint (0, 0, 0); |
|
|
196 | () |
|
|
197 | } |
|
|
198 | |
|
|
199 | sub do_exists { |
|
|
200 | my ($db, $key) = @_; |
|
|
201 | |
|
|
202 | utf8::downgrade $key; |
|
|
203 | my $data; |
|
|
204 | (table $db)->db_get ($key, $data) == 0 |
|
|
205 | ? length $data |
|
|
206 | : () |
|
|
207 | } |
|
|
208 | |
|
|
209 | sub do_get { |
|
|
210 | my ($db, $key) = @_; |
|
|
211 | |
|
|
212 | utf8::downgrade $key; |
|
|
213 | my $data; |
|
|
214 | (table $db)->db_get ($key, $data) == 0 |
|
|
215 | ? $data |
|
|
216 | : () |
|
|
217 | } |
|
|
218 | |
|
|
219 | sub do_put { |
|
|
220 | my ($db, $key, $data) = @_; |
|
|
221 | |
|
|
222 | utf8::downgrade $key; |
|
|
223 | utf8::downgrade $data; |
|
|
224 | (table $db)->db_put ($key => $data) |
|
|
225 | } |
|
|
226 | |
|
|
227 | sub do_table { |
|
|
228 | my ($db) = @_; |
|
|
229 | |
|
|
230 | $db = table $db; |
|
|
231 | |
|
|
232 | my $cursor = $db->db_cursor; |
|
|
233 | my %kv; |
|
|
234 | my ($k, $v); |
|
|
235 | $kv{$k} = $v while $cursor->c_get ($k, $v, BerkeleyDB::DB_NEXT) == 0; |
|
|
236 | |
|
|
237 | \%kv |
|
|
238 | } |
|
|
239 | |
|
|
240 | sub do_get_tile_id { |
|
|
241 | my ($hash) = @_; |
|
|
242 | |
|
|
243 | my $id; |
|
|
244 | my $table = table "facemap"; |
|
|
245 | |
|
|
246 | return $id |
|
|
247 | if $table->db_get ($hash, $id) == 0; |
|
|
248 | |
|
|
249 | for (1..100) { |
|
|
250 | my $txn = $DB_ENV->txn_begin; |
|
|
251 | my $status = $table->db_get (id => $id); |
|
|
252 | if ($status == 0 || $status == BerkeleyDB::DB_NOTFOUND) { |
|
|
253 | $id = ($id || 64) + 1; |
|
|
254 | if ($table->db_put (id => $id) == 0 |
|
|
255 | && $table->db_put ($hash => $id) == 0) { |
|
|
256 | $txn->txn_commit; |
|
|
257 | |
|
|
258 | return $id; |
|
|
259 | } |
|
|
260 | } |
|
|
261 | $txn->txn_abort; |
|
|
262 | } |
|
|
263 | |
|
|
264 | die "maximum number of transaction retries reached - database problems?"; |
|
|
265 | } |
283 | } |
266 | |
284 | |
267 | sub do_unlink { |
285 | sub do_unlink { |
268 | unlink $_[0]; |
286 | unlink $_[0]; |
269 | } |
287 | } |
270 | |
288 | |
|
|
289 | sub do_read_file { |
|
|
290 | my ($path) = @_; |
|
|
291 | |
|
|
292 | utf8::downgrade $path; |
|
|
293 | open my $fh, "<:raw", $path |
|
|
294 | or return; |
|
|
295 | sysread $fh, my $buf, -s $fh; |
|
|
296 | |
|
|
297 | $buf |
|
|
298 | } |
|
|
299 | |
271 | sub do_write_file { |
300 | sub do_write_file { |
272 | my ($file, $data) = @_; |
301 | my ($path, $data) = @_; |
273 | |
302 | |
274 | utf8::downgrade $file; |
303 | utf8::downgrade $path; |
275 | utf8::downgrade $data; |
304 | utf8::downgrade $data; |
276 | open my $fh, ">:raw", CFPlus::DB::path_of $file |
305 | open my $fh, ">:raw", $path |
277 | or return; |
306 | or return; |
278 | print $fh $data; |
307 | syswrite $fh, $data; |
279 | close $fh; |
308 | close $fh; |
280 | |
309 | |
281 | 1 |
310 | 1 |
282 | } |
311 | } |
283 | |
312 | |
|
|
313 | sub do_prefetch_file { |
|
|
314 | my ($path, $size) = @_; |
|
|
315 | |
|
|
316 | utf8::downgrade $path; |
|
|
317 | open my $fh, "<:raw", $path |
|
|
318 | or return; |
|
|
319 | sysread $fh, my $buf, $size; |
|
|
320 | |
|
|
321 | 1 |
|
|
322 | } |
|
|
323 | |
|
|
324 | our %LOG_FH; |
|
|
325 | |
|
|
326 | sub do_logprint { |
|
|
327 | my ($path, $line) = @_; |
|
|
328 | |
|
|
329 | $LOG_FH{$path} ||= do { |
|
|
330 | open my $fh, ">>:utf8", $path |
|
|
331 | or warn "Couldn't open logfile $path: $!"; |
|
|
332 | |
|
|
333 | $fh->autoflush (1); |
|
|
334 | |
|
|
335 | $fh |
|
|
336 | }; |
|
|
337 | |
|
|
338 | my ($sec, $min, $hour, $mday, $mon, $year) = localtime time; |
|
|
339 | |
|
|
340 | my $ts = sprintf "%04d-%02d-%02d %02d:%02d:%02d", |
|
|
341 | $year + 1900, $mon + 1, $mday, $hour, $min, $sec; |
|
|
342 | |
|
|
343 | print { $LOG_FH{$path} } "$ts $line\n" |
|
|
344 | } |
|
|
345 | |
284 | sub run { |
346 | sub run { |
285 | ($FH, my $fh) = CFPlus::socketpipe; |
347 | ($FH, my $fh) = DC::socketpipe; |
286 | |
348 | |
287 | my $oldfh = select $FH; $| = 1; select $oldfh; |
349 | my $oldfh = select $FH; $| = 1; select $oldfh; |
288 | my $oldfh = select $fh; $| = 1; select $oldfh; |
350 | my $oldfh = select $fh; $| = 1; select $oldfh; |
289 | |
351 | |
290 | my $pid = fork; |
352 | my $pid = fork; |
291 | |
353 | |
292 | if (defined $pid && !$pid) { |
354 | if (defined $pid && !$pid) { |
|
|
355 | local $SIG{QUIT} = "IGNORE"; |
293 | local $SIG{__DIE__}; |
356 | local $SIG{__DIE__}; |
|
|
357 | local $SIG{__WARN__}; |
294 | eval { |
358 | eval { |
295 | close $FH; |
359 | close $FH; |
296 | |
|
|
297 | unless (eval { open_db }) { |
|
|
298 | eval { File::Path::rmtree $DB_HOME }; |
|
|
299 | open_db; |
|
|
300 | } |
|
|
301 | |
360 | |
302 | while () { |
361 | while () { |
303 | 4 == read $fh, my $len, 4 |
362 | 4 == read $fh, my $len, 4 |
304 | or last; |
363 | or last; |
305 | $len = unpack "N", $len; |
364 | $len = unpack "N", $len; |
… | |
… | |
307 | or die "unexpected eof while reading request"; |
366 | or die "unexpected eof while reading request"; |
308 | |
367 | |
309 | $req = Storable::thaw $req; |
368 | $req = Storable::thaw $req; |
310 | |
369 | |
311 | my ($id, $type, @args) = @$req; |
370 | my ($id, $type, @args) = @$req; |
312 | my $cb = CFPlus::DB::Server->can ("do_$type") |
371 | my $cb = DC::DB::Server->can ("do_$type") |
313 | or die "$type: unknown database request type\n"; |
372 | or die "$type: unknown database request type\n"; |
314 | my $res = pack "N/a*", Storable::freeze [$id, $cb->(@args)]; |
373 | my $res = pack "N/a*", Storable::freeze [$id, $cb->(@args)]; |
315 | (syswrite $fh, $res) == length $res |
374 | (syswrite $fh, $res) == length $res |
316 | or die; |
375 | or die "DB::write: $!"; |
317 | } |
376 | } |
318 | }; |
377 | }; |
319 | |
378 | |
320 | my $error = $@; |
379 | my $error = $@; |
321 | |
380 | |
322 | eval { |
381 | eval { |
323 | undef %DB_TABLE; |
|
|
324 | undef $DB_ENV; |
|
|
325 | |
|
|
326 | Storable::store_fd [die => $error], $fh; |
382 | Storable::store_fd [die => $error], $fh; |
327 | }; |
383 | }; |
328 | |
384 | |
|
|
385 | warn $error |
|
|
386 | if $error; |
|
|
387 | |
329 | CFPlus::_exit 0; |
388 | DC::_exit 0; |
330 | } |
389 | } |
331 | |
390 | |
332 | close $fh; |
391 | close $fh; |
333 | CFPlus::fh_nonblocking $FH, 1; |
392 | DC::fh_nonblocking $FH, 1; |
334 | |
393 | |
335 | $CB{die} = sub { die shift }; |
394 | $CB{die} = sub { die shift }; |
336 | |
395 | |
337 | $fh_r_watcher = AnyEvent->io (fh => $FH, poll => 'r', cb => \&fh_read); |
396 | $fh_r_watcher = EV::io $FH, EV::READ , \&fh_read; |
338 | |
397 | $fh_w_watcher = EV::io $FH, EV::WRITE, \&fh_write; |
339 | sync_tick; |
|
|
340 | } |
398 | } |
341 | |
399 | |
342 | sub stop { |
400 | sub stop { |
343 | close $FH; |
401 | close $FH; |
344 | } |
402 | } |
345 | |
403 | |
|
|
404 | package DC::DB; |
|
|
405 | |
|
|
406 | sub nuke_db { |
|
|
407 | File::Path::mkpath [$DB_HOME]; |
|
|
408 | eval { File::Path::rmtree $DB_HOME }; |
|
|
409 | } |
|
|
410 | |
|
|
411 | sub open_db { |
|
|
412 | unless (eval { try_open_db }) { |
|
|
413 | warn "$@";#d# |
|
|
414 | eval { nuke_db }; |
|
|
415 | try_open_db; |
|
|
416 | } |
|
|
417 | |
|
|
418 | # fetch the full face table first |
|
|
419 | unless ($facemap) { |
|
|
420 | do_table facemap => sub { |
|
|
421 | $facemap = $_[0]; |
|
|
422 | delete $facemap->{id}; |
|
|
423 | my %maptile = reverse %$facemap;#d# |
|
|
424 | if ((scalar keys %$facemap) != (scalar keys %maptile)) {#d# |
|
|
425 | $facemap = { };#d# |
|
|
426 | DC::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d# |
|
|
427 | }#d# |
|
|
428 | }; |
|
|
429 | } |
|
|
430 | |
|
|
431 | $WATCHER = EV::io BDB::poll_fileno, EV::READ, \&BDB::poll_cb; |
|
|
432 | $SYNC = EV::timer_ns 0, 60, sub { |
|
|
433 | $_[0]->stop; |
|
|
434 | db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { }; |
|
|
435 | }; |
|
|
436 | } |
|
|
437 | |
|
|
438 | END { |
|
|
439 | undef $TILE_SEQ; |
|
|
440 | %DB_TABLE = (); |
|
|
441 | undef $DB_ENV; |
|
|
442 | } |
|
|
443 | |
346 | 1; |
444 | 1; |
347 | |
445 | |
348 | =back |
446 | =back |
349 | |
447 | |
350 | =head1 AUTHOR |
448 | =head1 AUTHOR |