1 | =head1 NAME |
1 | =head1 NAME |
2 | |
2 | |
3 | CFPlus::DB - async. database access for cfplus |
3 | CFPlus::DB - async. database and filesystem access for cfplus |
4 | |
4 | |
5 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
6 | |
6 | |
7 | use CFPlus::DB; |
7 | use CFPlus::DB; |
8 | |
8 | |
… | |
… | |
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 (); |
|
|
22 | use Config; |
21 | use AnyEvent (); |
23 | use Event (); |
22 | use Storable (); # finally |
24 | |
|
|
25 | use CFPlus; |
|
|
26 | |
|
|
27 | our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}"; |
|
|
28 | |
|
|
29 | sub path_of_res($) { |
|
|
30 | utf8::downgrade $_[0]; # bug in unpack "H*" |
|
|
31 | "$DB_HOME/res-data-" . unpack "H*", $_[0] |
|
|
32 | } |
23 | |
33 | |
24 | sub sync { |
34 | sub sync { |
25 | # for debugging |
35 | # for debugging |
26 | #CFPlus::DB::Server::req (sync => sub { }); |
36 | #CFPlus::DB::Server::req (sync => sub { }); |
27 | CFPlus::DB::Server::sync (); |
37 | CFPlus::DB::Server::sync (); |
28 | } |
38 | } |
29 | |
39 | |
|
|
40 | sub exists($$$) { |
|
|
41 | CFPlus::DB::Server::req (exists => @_); |
|
|
42 | } |
|
|
43 | |
30 | sub get($$$) { |
44 | sub get($$$) { |
31 | CFPlus::DB::Server::req (get => @_); |
45 | CFPlus::DB::Server::req (get => @_); |
32 | } |
46 | } |
33 | |
47 | |
34 | sub put($$$$) { |
48 | sub put($$$$) { |
35 | CFPlus::DB::Server::req (put => @_); |
49 | CFPlus::DB::Server::req (put => @_); |
|
|
50 | } |
|
|
51 | |
|
|
52 | sub unlink($$) { |
|
|
53 | CFPlus::DB::Server::req (unlink => @_); |
|
|
54 | } |
|
|
55 | |
|
|
56 | sub write_file($$$) { |
|
|
57 | CFPlus::DB::Server::req (write_file => @_); |
|
|
58 | } |
|
|
59 | |
|
|
60 | sub prefetch_file($$$) { |
|
|
61 | CFPlus::DB::Server::req (prefetch_file => @_); |
|
|
62 | } |
|
|
63 | |
|
|
64 | sub logprint($$$) { |
|
|
65 | CFPlus::DB::Server::req (logprint => @_); |
36 | } |
66 | } |
37 | |
67 | |
38 | our $tilemap; |
68 | our $tilemap; |
39 | |
69 | |
40 | sub get_tile_id_sync($) { |
70 | sub get_tile_id_sync($) { |
… | |
… | |
59 | use strict; |
89 | use strict; |
60 | |
90 | |
61 | use Fcntl; |
91 | use Fcntl; |
62 | use BerkeleyDB; |
92 | use BerkeleyDB; |
63 | |
93 | |
64 | our $DB_HOME = "$Crossfire::VARDIR/cfplus"; |
|
|
65 | our $DB_ENV; |
94 | our $DB_ENV; |
66 | our $DB_STATE; |
95 | our $DB_STATE; |
67 | our %DB_TABLE; |
96 | our %DB_TABLE; |
68 | |
97 | |
69 | sub open_db { |
98 | sub open_db { |
… | |
… | |
100 | -Flags => DB_CREATE | DB_UPGRADE, |
129 | -Flags => DB_CREATE | DB_UPGRADE, |
101 | or die "unable to create/open database table $_[0]: $BerkeleyDB::Error" |
130 | or die "unable to create/open database table $_[0]: $BerkeleyDB::Error" |
102 | } |
131 | } |
103 | } |
132 | } |
104 | |
133 | |
105 | our $SYNC_INTERVAL = 6; |
|
|
106 | |
|
|
107 | our %CB; |
134 | our %CB; |
108 | our $FH; |
135 | our $FH; |
109 | our $ID = "aaa0"; |
136 | our $ID = "aaa0"; |
110 | our ($fh_r_watcher, $fh_w_watcher); |
137 | our ($fh_r_watcher, $fh_w_watcher); |
111 | our $sync_timer; |
138 | our $sync_timer; |
112 | our $write_buf; |
139 | our $write_buf; |
113 | our $read_buf; |
140 | our $read_buf; |
114 | |
141 | |
|
|
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 | |
115 | sub fh_write { |
147 | sub fh_write { |
116 | my $len = syswrite $FH, $write_buf; |
148 | my $len = syswrite $FH, $write_buf; |
117 | |
149 | |
118 | substr $write_buf, 0, $len, ""; |
150 | substr $write_buf, 0, $len, ""; |
119 | |
151 | |
120 | undef $fh_w_watcher |
152 | $fh_w_watcher->stop |
121 | unless length $write_buf; |
153 | unless length $write_buf; |
122 | } |
154 | } |
123 | |
155 | |
124 | sub fh_read { |
156 | sub fh_read { |
125 | my $status = sysread $FH, $read_buf, 16384, length $read_buf; |
157 | my $status = sysread $FH, $read_buf, 16384, length $read_buf; |
… | |
… | |
161 | |
193 | |
162 | my $id = ++$ID; |
194 | my $id = ++$ID; |
163 | $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; |
195 | $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args]; |
164 | $CB{$id} = $cb; |
196 | $CB{$id} = $cb; |
165 | |
197 | |
166 | $fh_w_watcher = AnyEvent->io (fh => $FH, poll => 'w', cb => \&fh_write); |
198 | $fh_w_watcher->start; |
167 | } |
199 | $SYNC->start; |
168 | |
|
|
169 | sub sync_tick { |
|
|
170 | req "sync", sub { }; |
|
|
171 | $sync_timer = AnyEvent->timer (after => $SYNC_INTERVAL, cb => \&sync_tick); |
|
|
172 | } |
200 | } |
173 | |
201 | |
174 | sub do_sync { |
202 | sub do_sync { |
175 | $DB_ENV->txn_checkpoint (0, 0, 0); |
203 | $DB_ENV->txn_checkpoint (0, 0, 0); |
176 | () |
204 | () |
177 | } |
205 | } |
178 | |
206 | |
|
|
207 | sub do_exists { |
|
|
208 | my ($db, $key) = @_; |
|
|
209 | |
|
|
210 | utf8::downgrade $key; |
|
|
211 | my $data; |
|
|
212 | (table $db)->db_get ($key, $data) == 0 |
|
|
213 | ? length $data |
|
|
214 | : () |
|
|
215 | } |
|
|
216 | |
179 | sub do_get { |
217 | sub do_get { |
180 | my ($db, $key) = @_; |
218 | my ($db, $key) = @_; |
181 | |
219 | |
|
|
220 | utf8::downgrade $key; |
182 | my $data; |
221 | my $data; |
183 | (table $db)->db_get ($key, $data) == 0 |
222 | (table $db)->db_get ($key, $data) == 0 |
184 | ? $data |
223 | ? $data |
185 | : () |
224 | : () |
186 | } |
225 | } |
187 | |
226 | |
188 | sub do_put { |
227 | sub do_put { |
189 | my ($db, $key, $data) = @_; |
228 | my ($db, $key, $data) = @_; |
190 | |
229 | |
|
|
230 | utf8::downgrade $key; |
|
|
231 | utf8::downgrade $data; |
191 | (table $db)->db_put ($key => $data) |
232 | (table $db)->db_put ($key => $data) |
192 | } |
233 | } |
193 | |
234 | |
194 | sub do_table { |
235 | sub do_table { |
195 | my ($db) = @_; |
236 | my ($db) = @_; |
… | |
… | |
229 | } |
270 | } |
230 | |
271 | |
231 | die "maximum number of transaction retries reached - database problems?"; |
272 | die "maximum number of transaction retries reached - database problems?"; |
232 | } |
273 | } |
233 | |
274 | |
|
|
275 | sub do_unlink { |
|
|
276 | unlink $_[0]; |
|
|
277 | } |
|
|
278 | |
|
|
279 | sub do_write_file { |
|
|
280 | my ($file, $data) = @_; |
|
|
281 | |
|
|
282 | utf8::downgrade $file; |
|
|
283 | utf8::downgrade $data; |
|
|
284 | open my $fh, ">:raw", $file |
|
|
285 | or return; |
|
|
286 | print $fh $data; |
|
|
287 | close $fh; |
|
|
288 | |
|
|
289 | 1 |
|
|
290 | } |
|
|
291 | |
|
|
292 | sub do_prefetch_file { |
|
|
293 | my ($file, $size) = @_; |
|
|
294 | |
|
|
295 | utf8::downgrade $file; |
|
|
296 | open my $fh, "<:raw", $file |
|
|
297 | or return; |
|
|
298 | sysread $fh, my $buf, $size; |
|
|
299 | |
|
|
300 | 1 |
|
|
301 | } |
|
|
302 | |
|
|
303 | our %LOG_FH; |
|
|
304 | |
|
|
305 | sub do_logprint { |
|
|
306 | my ($path, $line) = @_; |
|
|
307 | |
|
|
308 | $LOG_FH{$path} ||= do { |
|
|
309 | open my $fh, ">>:utf8", $path |
|
|
310 | or warn "Couldn't open logfile $path: $!"; |
|
|
311 | |
|
|
312 | $fh->autoflush (1); |
|
|
313 | |
|
|
314 | $fh |
|
|
315 | }; |
|
|
316 | |
|
|
317 | my ($sec, $min, $hour, $mday, $mon, $year) = localtime time; |
|
|
318 | |
|
|
319 | my $ts = sprintf "%04d-%02d-%02d %02d:%02d:%02d", |
|
|
320 | $year + 1900, $mon + 1, $mday, $hour, $min, $sec; |
|
|
321 | |
|
|
322 | print { $LOG_FH{$path} } "$ts $line\n" |
|
|
323 | } |
|
|
324 | |
234 | sub run { |
325 | sub run { |
235 | ($FH, my $fh) = CFPlus::socketpipe; |
326 | ($FH, my $fh) = CFPlus::socketpipe; |
236 | |
327 | |
237 | my $oldfh = select $FH; $| = 1; select $oldfh; |
328 | my $oldfh = select $FH; $| = 1; select $oldfh; |
238 | my $oldfh = select $fh; $| = 1; select $oldfh; |
329 | my $oldfh = select $fh; $| = 1; select $oldfh; |
239 | |
330 | |
240 | my $pid = fork; |
331 | my $pid = fork; |
241 | |
332 | |
242 | if (defined $pid && !$pid) { |
333 | if (defined $pid && !$pid) { |
|
|
334 | local $SIG{QUIT}; |
243 | local $SIG{__DIE__}; |
335 | local $SIG{__DIE__}; |
|
|
336 | local $SIG{__WARN__}; |
244 | eval { |
337 | eval { |
245 | close $FH; |
338 | close $FH; |
246 | |
339 | |
247 | unless (eval { open_db }) { |
340 | unless (eval { open_db }) { |
248 | File::Path::rmtree $DB_HOME; |
341 | eval { File::Path::rmtree $DB_HOME }; |
249 | open_db; |
342 | open_db; |
250 | } |
343 | } |
251 | |
344 | |
252 | while () { |
345 | while () { |
253 | 4 == read $fh, my $len, 4 |
346 | 4 == read $fh, my $len, 4 |
… | |
… | |
278 | |
371 | |
279 | CFPlus::_exit 0; |
372 | CFPlus::_exit 0; |
280 | } |
373 | } |
281 | |
374 | |
282 | close $fh; |
375 | close $fh; |
283 | fcntl $FH, F_SETFL, O_NONBLOCK; |
376 | CFPlus::fh_nonblocking $FH, 1; |
284 | |
377 | |
285 | $CB{die} = sub { die shift }; |
378 | $CB{die} = sub { die shift }; |
286 | |
379 | |
287 | $fh_r_watcher = AnyEvent->io (fh => $FH, poll => 'r', cb => \&fh_read); |
380 | $fh_r_watcher = Event->io (fd => $FH, poll => 'r', nice => 1, cb => \&fh_read); |
|
|
381 | $fh_w_watcher = Event->io (fd => $FH, poll => 'w', nice => -1, parked => 1, cb => \&fh_write); |
|
|
382 | $SYNC->start; |
|
|
383 | } |
288 | |
384 | |
289 | sync_tick; |
385 | sub stop { |
|
|
386 | close $FH; |
290 | } |
387 | } |
291 | |
388 | |
292 | 1; |
389 | 1; |
293 | |
390 | |
294 | =back |
391 | =back |