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 Storable (); |
22 | use Storable (); |
|
|
23 | use AnyEvent::Util (); |
22 | use Config; |
24 | use Config; |
|
|
25 | use BDB; |
23 | |
26 | |
24 | use CFPlus; |
27 | use DC; |
25 | |
28 | |
26 | our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}"; |
29 | our $ODBDIR = "cfplus-" . BDB::VERSION_MAJOR . "." . BDB::VERSION_MINOR . "-$Config{archname}"; |
|
|
30 | our $DBDIR = "client-" . BDB::VERSION_MAJOR . "." . BDB::VERSION_MINOR . "-$Config{archname}"; |
|
|
31 | our $DB_HOME = "$Deliantra::VARDIR/$DBDIR"; |
|
|
32 | |
|
|
33 | sub FIRST_TILE_ID () { 64 } |
|
|
34 | |
|
|
35 | unless (-d $DB_HOME) { |
|
|
36 | if (-d "$Deliantra::VARDIR/$ODBDIR") { |
|
|
37 | rename "$Deliantra::VARDIR/$ODBDIR", $DB_HOME; |
|
|
38 | print STDERR "INFO: moved old database from $Deliantra::VARDIR/$ODBDIR to $DB_HOME\n"; |
|
|
39 | } elsif (-d "$Deliantra::OLDDIR/$ODBDIR") { |
|
|
40 | rename "$Deliantra::OLDDIR/$DBDIR", $DB_HOME; |
|
|
41 | print STDERR "INFO: moved old database from $Deliantra::OLDDIR/$ODBDIR to $DB_HOME\n"; |
|
|
42 | } else { |
|
|
43 | File::Path::mkpath [$DB_HOME] |
|
|
44 | or die "unable to create database directory $DB_HOME: $!"; |
|
|
45 | } |
|
|
46 | } |
|
|
47 | |
|
|
48 | BDB::max_poll_time 0.03; |
|
|
49 | BDB::max_parallel 1; |
|
|
50 | |
|
|
51 | our $DB_ENV; |
|
|
52 | our $DB_STATE; |
|
|
53 | our %DB_TABLE; |
|
|
54 | our $TILE_SEQ; |
|
|
55 | |
|
|
56 | sub try_open_db { |
|
|
57 | File::Path::mkpath [$DB_HOME]; |
|
|
58 | |
|
|
59 | my $env = db_env_create; |
|
|
60 | |
|
|
61 | $env->set_errfile (\*STDERR); |
|
|
62 | $env->set_msgfile (\*STDERR); |
|
|
63 | $env->set_verbose (-1, 1); |
|
|
64 | |
|
|
65 | $env->set_flags (BDB::AUTO_COMMIT | BDB::REGION_INIT); |
|
|
66 | $env->set_flags (&BDB::LOG_AUTOREMOVE ) if BDB::VERSION v0, v4.7; |
|
|
67 | $env->log_set_config (&BDB::LOG_AUTO_REMOVE) if BDB::VERSION v4.7; |
|
|
68 | |
|
|
69 | $env->set_timeout (3, BDB::SET_TXN_TIMEOUT); |
|
|
70 | $env->set_timeout (3, BDB::SET_LOCK_TIMEOUT); |
|
|
71 | |
|
|
72 | $env->set_cachesize (0, 2048 * 1024, 0); |
|
|
73 | |
|
|
74 | db_env_open $env, $DB_HOME, |
|
|
75 | BDB::CREATE | BDB::REGISTER | BDB::RECOVER | BDB::INIT_MPOOL | BDB::INIT_LOCK | BDB::INIT_TXN, |
|
|
76 | 0666; |
|
|
77 | |
|
|
78 | $! and die "cannot open database environment $DB_HOME: " . BDB::strerror; |
|
|
79 | |
|
|
80 | $DB_ENV = $env; |
|
|
81 | |
|
|
82 | 1 |
|
|
83 | } |
|
|
84 | |
|
|
85 | sub table($) { |
|
|
86 | $DB_TABLE{$_[0]} ||= do { |
|
|
87 | my ($table) = @_; |
|
|
88 | |
|
|
89 | $table =~ s/([^a-zA-Z0-9_\-])/sprintf "=%x=", ord $1/ge; |
|
|
90 | |
|
|
91 | $DB_ENV#d# |
|
|
92 | or return ::clienterror ("trying to create table $_[0] with empty db_env $DB_ENV" => 1);#d# |
|
|
93 | |
|
|
94 | my $db = db_create $DB_ENV; |
|
|
95 | $db->set_flags (BDB::CHKSUM); |
|
|
96 | |
|
|
97 | db_open $db, undef, $table, undef, BDB::BTREE, |
|
|
98 | BDB::AUTO_COMMIT | BDB::CREATE | BDB::READ_UNCOMMITTED, 0666; |
|
|
99 | |
|
|
100 | $! and "unable to open/create database table $_[0]: ". BDB::strerror; |
|
|
101 | |
|
|
102 | $db |
|
|
103 | } |
|
|
104 | } |
|
|
105 | |
|
|
106 | ############################################################################# |
|
|
107 | |
|
|
108 | our $WATCHER; |
|
|
109 | our $SYNC; |
|
|
110 | our $facemap; |
|
|
111 | |
|
|
112 | sub exists($$$) { |
|
|
113 | my ($db, $key, $cb) = @_; |
|
|
114 | |
|
|
115 | my $data; |
|
|
116 | db_get table $db, undef, $key, $data, 0, sub { |
|
|
117 | $cb->($! ? () : length $data); |
|
|
118 | }; |
|
|
119 | } |
|
|
120 | |
|
|
121 | sub get($$$) { |
|
|
122 | my ($db, $key, $cb) = @_; |
|
|
123 | |
|
|
124 | my $data; |
|
|
125 | db_get table $db, undef, $key, $data, 0, sub { |
|
|
126 | $cb->($! ? () : $data); |
|
|
127 | }; |
|
|
128 | } |
|
|
129 | |
|
|
130 | sub put($$$$) { |
|
|
131 | my ($db, $key, $data, $cb) = @_; |
|
|
132 | |
|
|
133 | db_put table $db, undef, $key, $data, 0, sub { |
|
|
134 | $cb->($!); |
|
|
135 | $SYNC->again unless $SYNC->is_active; |
|
|
136 | }; |
|
|
137 | } |
|
|
138 | |
|
|
139 | sub do_table { |
|
|
140 | my ($db, $cb) = @_; |
|
|
141 | |
|
|
142 | $db = table $db; |
|
|
143 | |
|
|
144 | my $cursor = $db->cursor; |
|
|
145 | my %kv; |
|
|
146 | |
|
|
147 | for (;;) { |
|
|
148 | db_c_get $cursor, my $k, my $v, BDB::NEXT; |
|
|
149 | last if $!; |
|
|
150 | $kv{$k} = $v; |
|
|
151 | } |
|
|
152 | |
|
|
153 | $cb->(\%kv); |
|
|
154 | } |
|
|
155 | |
|
|
156 | sub do_get_tile_id { |
|
|
157 | my ($name, $cb) = @_; |
|
|
158 | |
|
|
159 | my $table = table "facemap"; |
|
|
160 | my $id; |
|
|
161 | |
|
|
162 | db_get $table, undef, $name => $id, 0; |
|
|
163 | $! or return $cb->($id); |
|
|
164 | |
|
|
165 | unless ($TILE_SEQ) { |
|
|
166 | $TILE_SEQ = $table->sequence; |
|
|
167 | $TILE_SEQ->initial_value (FIRST_TILE_ID); |
|
|
168 | $TILE_SEQ->set_cachesize (0); |
|
|
169 | db_sequence_open $TILE_SEQ, undef, "id", BDB::CREATE; |
|
|
170 | } |
|
|
171 | |
|
|
172 | db_sequence_get $TILE_SEQ, undef, 1, my $id; |
|
|
173 | |
|
|
174 | die "unable to allocate tile id: $!" |
|
|
175 | if $!; |
|
|
176 | |
|
|
177 | db_put $table, undef, $name => $id, 0; |
|
|
178 | $cb->($id); |
|
|
179 | |
|
|
180 | } |
|
|
181 | |
|
|
182 | sub get_tile_id_sync($) { |
|
|
183 | my ($name) = @_; |
|
|
184 | |
|
|
185 | $facemap->{$name} ||= do { |
|
|
186 | my $id; |
|
|
187 | do_get_tile_id $name, sub { |
|
|
188 | $id = $_[0]; |
|
|
189 | }; |
|
|
190 | BDB::flush; |
|
|
191 | $id |
|
|
192 | } |
|
|
193 | } |
|
|
194 | |
|
|
195 | ############################################################################# |
27 | |
196 | |
28 | sub path_of_res($) { |
197 | sub path_of_res($) { |
29 | utf8::downgrade $_[0]; # bug in unpack "H*" |
198 | utf8::downgrade $_[0]; # bug in unpack "H*" |
30 | "$DB_HOME/res-data-" . unpack "H*", $_[0] |
199 | "$DB_HOME/res-data-" . unpack "H*", $_[0] |
31 | } |
200 | } |
32 | |
201 | |
33 | sub sync { |
202 | sub sync { |
34 | # for debugging |
203 | # for debugging |
35 | #CFPlus::DB::Server::req (sync => sub { }); |
204 | #DC::DB::Server::req (sync => sub { }); |
36 | CFPlus::DB::Server::sync (); |
205 | DC::DB::Server::sync (); |
37 | } |
|
|
38 | |
|
|
39 | sub exists($$$) { |
|
|
40 | CFPlus::DB::Server::req (exists => @_); |
|
|
41 | } |
|
|
42 | |
|
|
43 | sub get($$$) { |
|
|
44 | CFPlus::DB::Server::req (get => @_); |
|
|
45 | } |
|
|
46 | |
|
|
47 | sub put($$$$) { |
|
|
48 | CFPlus::DB::Server::req (put => @_); |
|
|
49 | } |
206 | } |
50 | |
207 | |
51 | sub unlink($$) { |
208 | sub unlink($$) { |
52 | CFPlus::DB::Server::req (unlink => @_); |
209 | DC::DB::Server::req (unlink => @_); |
53 | } |
210 | } |
54 | |
211 | |
55 | sub read_file($$) { |
212 | sub read_file($$) { |
56 | CFPlus::DB::Server::req (read_file => @_); |
213 | DC::DB::Server::req (read_file => @_); |
57 | } |
214 | } |
58 | |
215 | |
59 | sub write_file($$$) { |
216 | sub write_file($$$) { |
60 | CFPlus::DB::Server::req (write_file => @_); |
217 | DC::DB::Server::req (write_file => @_); |
61 | } |
218 | } |
62 | |
219 | |
63 | sub prefetch_file($$$) { |
220 | sub prefetch_file($$$) { |
64 | CFPlus::DB::Server::req (prefetch_file => @_); |
221 | DC::DB::Server::req (prefetch_file => @_); |
65 | } |
222 | } |
66 | |
223 | |
67 | sub logprint($$$) { |
224 | sub logprint($$$) { |
68 | CFPlus::DB::Server::req (logprint => @_); |
225 | DC::DB::Server::req (logprint => @_); |
69 | } |
226 | } |
70 | |
227 | |
71 | our $tilemap; |
228 | ############################################################################# |
72 | |
229 | |
73 | sub get_tile_id_sync($) { |
|
|
74 | my ($name) = @_; |
|
|
75 | |
|
|
76 | # fetch the full face table first |
|
|
77 | unless ($tilemap) { |
|
|
78 | CFPlus::DB::Server::req (table => facemap => sub { |
|
|
79 | $tilemap = $_[0]; |
|
|
80 | delete $tilemap->{id}; |
|
|
81 | my %maptile = reverse %$tilemap;#d# |
|
|
82 | if ((scalar keys %$tilemap) != (scalar keys %maptile)) {#d# |
|
|
83 | $tilemap = { };#d# |
|
|
84 | CFPlus::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d# |
|
|
85 | }#d# |
|
|
86 | }); |
|
|
87 | sync; |
|
|
88 | } |
|
|
89 | |
|
|
90 | $tilemap->{$name} ||= do { |
|
|
91 | my $id; |
|
|
92 | CFPlus::DB::Server::req (get_tile_id => $name, sub { $id = $_[0] }); |
|
|
93 | sync; |
|
|
94 | $id |
|
|
95 | } |
|
|
96 | } |
|
|
97 | |
|
|
98 | package CFPlus::DB::Server; |
230 | package DC::DB::Server; |
99 | |
231 | |
100 | use strict; |
232 | use strict; |
101 | |
233 | |
102 | use EV (); |
234 | use EV (); |
103 | use Fcntl; |
235 | use Fcntl; |
104 | use BerkeleyDB; |
|
|
105 | |
|
|
106 | our $DB_ENV; |
|
|
107 | our $DB_STATE; |
|
|
108 | our %DB_TABLE; |
|
|
109 | |
|
|
110 | sub 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: $BerkeleyDB::Error"; |
|
|
125 | |
|
|
126 | 1 |
|
|
127 | } |
|
|
128 | |
|
|
129 | sub table($) { |
|
|
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 | |
236 | |
146 | our %CB; |
237 | our %CB; |
147 | our $FH; |
238 | our $FH; |
148 | our $ID = "aaa0"; |
239 | our $ID = "aaa0"; |
149 | our ($fh_r_watcher, $fh_w_watcher); |
240 | our ($fh_r_watcher, $fh_w_watcher); |
150 | our $sync_timer; |
241 | our $sync_timer; |
151 | our $write_buf; |
242 | our $write_buf; |
152 | our $read_buf; |
243 | our $read_buf; |
153 | |
244 | |
154 | our $SYNC = EV::timer_ns 0, 60, sub { |
|
|
155 | $_[0]->stop; |
|
|
156 | CFPlus::DB::Server::req (sync => sub { }); |
|
|
157 | }; |
|
|
158 | |
|
|
159 | sub fh_write { |
245 | sub fh_write { |
160 | my $len = syswrite $FH, $write_buf; |
246 | my $len = syswrite $FH, $write_buf; |
161 | |
247 | |
162 | substr $write_buf, 0, $len, ""; |
248 | substr $write_buf, 0, $len, ""; |
163 | |
249 | |
… | |
… | |
206 | my $id = ++$ID; |
292 | my $id = ++$ID; |
207 | $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; |
293 | $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; |
208 | $CB{$id} = $cb; |
294 | $CB{$id} = $cb; |
209 | |
295 | |
210 | $fh_w_watcher->start; |
296 | $fh_w_watcher->start; |
211 | $SYNC->again unless $SYNC->is_active; |
|
|
212 | } |
|
|
213 | |
|
|
214 | sub do_sync { |
|
|
215 | $DB_ENV->txn_checkpoint (0, 0, 0); |
|
|
216 | () |
|
|
217 | } |
|
|
218 | |
|
|
219 | sub do_exists { |
|
|
220 | my ($db, $key) = @_; |
|
|
221 | |
|
|
222 | utf8::downgrade $key; |
|
|
223 | my $data; |
|
|
224 | (table $db)->db_get ($key, $data) == 0 |
|
|
225 | ? length $data |
|
|
226 | : () |
|
|
227 | } |
|
|
228 | |
|
|
229 | sub do_get { |
|
|
230 | my ($db, $key) = @_; |
|
|
231 | |
|
|
232 | utf8::downgrade $key; |
|
|
233 | my $data; |
|
|
234 | (table $db)->db_get ($key, $data) == 0 |
|
|
235 | ? $data |
|
|
236 | : () |
|
|
237 | } |
|
|
238 | |
|
|
239 | sub do_put { |
|
|
240 | my ($db, $key, $data) = @_; |
|
|
241 | |
|
|
242 | utf8::downgrade $key; |
|
|
243 | utf8::downgrade $data; |
|
|
244 | (table $db)->db_put ($key => $data) |
|
|
245 | } |
|
|
246 | |
|
|
247 | sub do_table { |
|
|
248 | my ($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, $v, BerkeleyDB::DB_NEXT) == 0; |
|
|
256 | |
|
|
257 | \%kv |
|
|
258 | } |
|
|
259 | |
|
|
260 | sub do_get_tile_id { |
|
|
261 | my ($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 | } |
297 | } |
287 | |
298 | |
288 | sub do_unlink { |
299 | sub do_unlink { |
289 | unlink $_[0]; |
300 | unlink $_[0]; |
290 | } |
301 | } |
… | |
… | |
345 | |
356 | |
346 | print { $LOG_FH{$path} } "$ts $line\n" |
357 | print { $LOG_FH{$path} } "$ts $line\n" |
347 | } |
358 | } |
348 | |
359 | |
349 | sub run { |
360 | sub run { |
350 | ($FH, my $fh) = CFPlus::socketpipe; |
361 | ($FH, my $fh) = AnyEvent::Util::portable_socketpair |
|
|
362 | or die "unable to create database socketpair: $!"; |
351 | |
363 | |
352 | my $oldfh = select $FH; $| = 1; select $oldfh; |
364 | my $oldfh = select $FH; $| = 1; select $oldfh; |
353 | my $oldfh = select $fh; $| = 1; select $oldfh; |
365 | my $oldfh = select $fh; $| = 1; select $oldfh; |
354 | |
366 | |
355 | my $pid = fork; |
367 | my $pid = fork; |
356 | |
368 | |
357 | if (defined $pid && !$pid) { |
369 | if (defined $pid && !$pid) { |
358 | local $SIG{QUIT}; |
370 | local $SIG{QUIT} = "IGNORE"; |
359 | local $SIG{__DIE__}; |
371 | local $SIG{__DIE__}; |
360 | local $SIG{__WARN__}; |
372 | local $SIG{__WARN__}; |
361 | eval { |
373 | eval { |
362 | close $FH; |
374 | close $FH; |
363 | |
|
|
364 | unless (eval { open_db }) { |
|
|
365 | eval { File::Path::rmtree $DB_HOME }; |
|
|
366 | open_db; |
|
|
367 | } |
|
|
368 | |
375 | |
369 | while () { |
376 | while () { |
370 | 4 == read $fh, my $len, 4 |
377 | 4 == read $fh, my $len, 4 |
371 | or last; |
378 | or last; |
372 | $len = unpack "N", $len; |
379 | $len = unpack "N", $len; |
… | |
… | |
374 | or die "unexpected eof while reading request"; |
381 | or die "unexpected eof while reading request"; |
375 | |
382 | |
376 | $req = Storable::thaw $req; |
383 | $req = Storable::thaw $req; |
377 | |
384 | |
378 | my ($id, $type, @args) = @$req; |
385 | my ($id, $type, @args) = @$req; |
379 | my $cb = CFPlus::DB::Server->can ("do_$type") |
386 | my $cb = DC::DB::Server->can ("do_$type") |
380 | or die "$type: unknown database request type\n"; |
387 | or die "$type: unknown database request type\n"; |
381 | my $res = pack "N/a*", Storable::freeze [$id, $cb->(@args)]; |
388 | my $res = pack "N/a*", Storable::freeze [$id, $cb->(@args)]; |
382 | (syswrite $fh, $res) == length $res |
389 | (syswrite $fh, $res) == length $res |
383 | or die "DB::write: $!"; |
390 | or die "DB::write: $!"; |
384 | } |
391 | } |
385 | }; |
392 | }; |
386 | |
393 | |
387 | my $error = $@; |
394 | my $error = $@; |
388 | |
395 | |
389 | eval { |
396 | 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; |
397 | Storable::store_fd [die => $error], $fh; |
396 | }; |
398 | }; |
397 | |
399 | |
|
|
400 | warn $error |
|
|
401 | if $error; |
|
|
402 | |
398 | CFPlus::_exit 0; |
403 | DC::_exit 0; |
399 | } |
404 | } |
400 | |
405 | |
401 | close $fh; |
406 | close $fh; |
402 | CFPlus::fh_nonblocking $FH, 1; |
407 | DC::fh_nonblocking $FH, 1; |
403 | |
408 | |
404 | $CB{die} = sub { die shift }; |
409 | $CB{die} = sub { die shift }; |
405 | |
410 | |
406 | $fh_r_watcher = EV::io $FH, EV::READ , \&fh_read; |
411 | $fh_r_watcher = EV::io $FH, EV::READ , \&fh_read; |
407 | $fh_w_watcher = EV::io $FH, EV::WRITE, \&fh_write; |
412 | $fh_w_watcher = EV::io $FH, EV::WRITE, \&fh_write; |
408 | $SYNC->again unless $SYNC->is_active; |
|
|
409 | } |
413 | } |
410 | |
414 | |
411 | sub stop { |
415 | sub stop { |
412 | close $FH; |
416 | close $FH; |
413 | } |
417 | } |
414 | |
418 | |
|
|
419 | package DC::DB; |
|
|
420 | |
|
|
421 | sub nuke_db { |
|
|
422 | File::Path::mkpath [$DB_HOME]; |
|
|
423 | eval { File::Path::rmtree $DB_HOME }; |
|
|
424 | } |
|
|
425 | |
|
|
426 | sub open_db { |
|
|
427 | unless (eval { try_open_db }) { |
|
|
428 | warn "$@";#d# |
|
|
429 | eval { nuke_db }; |
|
|
430 | try_open_db; |
|
|
431 | } |
|
|
432 | |
|
|
433 | # fetch the full face table first |
|
|
434 | unless ($facemap) { |
|
|
435 | do_table facemap => sub { |
|
|
436 | $facemap = $_[0]; |
|
|
437 | delete $facemap->{id}; |
|
|
438 | my %maptile = reverse %$facemap;#d# |
|
|
439 | if ((scalar keys %$facemap) != (scalar keys %maptile)) {#d# |
|
|
440 | $facemap = { };#d# |
|
|
441 | DC::error "FATAL: facemap is not a 1:1 mapping, please report this and delete your $DB_HOME directory!\n";#d# |
|
|
442 | }#d# |
|
|
443 | }; |
|
|
444 | } |
|
|
445 | |
|
|
446 | $WATCHER = EV::io BDB::poll_fileno, EV::READ, \&BDB::poll_cb; |
|
|
447 | $SYNC = EV::timer_ns 0, 60, sub { |
|
|
448 | $_[0]->stop; |
|
|
449 | db_env_txn_checkpoint $DB_ENV, 0, 0, 0, sub { }; |
|
|
450 | }; |
|
|
451 | } |
|
|
452 | |
|
|
453 | END { |
|
|
454 | db_env_txn_checkpoint $DB_ENV, 0, 0, 0 |
|
|
455 | if $DB_ENV; |
|
|
456 | |
|
|
457 | undef $TILE_SEQ; |
|
|
458 | %DB_TABLE = (); |
|
|
459 | undef $DB_ENV; |
|
|
460 | } |
|
|
461 | |
415 | 1; |
462 | 1; |
416 | |
463 | |
417 | =back |
464 | =back |
418 | |
465 | |
419 | =head1 AUTHOR |
466 | =head1 AUTHOR |