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/cvs/BDB/BDB.xs
Revision: 1.42
Committed: Wed Jul 9 12:39:56 2008 UTC (15 years, 10 months ago) by root
Branch: MAIN
Changes since 1.41: +18 -5 lines
Log Message:
was not so simple

File Contents

# Content
1 #include "xthread.h"
2
3 #include <errno.h>
4
5 #include "EXTERN.h"
6 #include "perl.h"
7 #include "XSUB.h"
8
9 // perl stupidly defines these as macros, breaking
10 // lots and lots of code.
11 #undef open
12 #undef close
13 #undef abort
14 #undef malloc
15 #undef free
16 #undef send
17
18 #include <stddef.h>
19 #include <stdlib.h>
20 #include <errno.h>
21 #include <sys/types.h>
22 #include <limits.h>
23 #include <fcntl.h>
24
25 #ifndef _WIN32
26 # include <sys/time.h>
27 # include <unistd.h>
28 #endif
29
30 #include <db.h>
31
32 #if DB_VERSION_MAJOR < 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR < 4)
33 # error you need Berkeley DB 4.4 or newer installed
34 #endif
35
36 /* number of seconds after which idle threads exit */
37 #define IDLE_TIMEOUT 10
38
39 typedef DB_ENV DB_ENV_ornull;
40 typedef DB_TXN DB_TXN_ornull;
41 typedef DBC DBC_ornull;
42 typedef DB DB_ornull;
43 typedef DB_SEQUENCE DB_SEQUENCE_ornull;
44
45 typedef DB_ENV DB_ENV_ornuked;
46 typedef DB_TXN DB_TXN_ornuked;
47 typedef DBC DBC_ornuked;
48 typedef DB DB_ornuked;
49 typedef DB_SEQUENCE DB_SEQUENCE_ornuked;
50
51 typedef SV SV8; /* byte-sv, used for argument-checking */
52 typedef char *bdb_filename;
53
54 static SV *prepare_cb;
55
56 #if DB_VERSION_MINOR >= 6
57 # define c_close close
58 # define c_count count
59 # define c_del del
60 # define c_dup dup
61 # define c_get get
62 # define c_pget pget
63 # define c_put put
64 #endif
65
66 static char *
67 get_bdb_filename (SV *sv)
68 {
69 if (!SvOK (sv))
70 return 0;
71
72 #if _WIN32
73 /* win32 madness + win32 perl absolutely brokenness make for horrible hacks */
74 {
75 STRLEN len;
76 char *src = SvPVbyte (sv, len);
77 SV *t1 = sv_newmortal ();
78 SV *t2 = sv_newmortal ();
79
80 sv_upgrade (t1, SVt_PV); SvPOK_only (t1); SvGROW (t1, len * 16 + 1);
81 sv_upgrade (t2, SVt_PV); SvPOK_only (t2); SvGROW (t2, len * 16 + 1);
82
83 len = MultiByteToWideChar (CP_ACP, 0, src, len, (WCHAR *)SvPVX (t1), SvLEN (t1) / sizeof (WCHAR));
84 len = WideCharToMultiByte (CP_UTF8, 0, (WCHAR *)SvPVX (t1), len, SvPVX (t2), SvLEN (t2), 0, 0);
85 SvPOK_only (t2);
86 SvPVX (t2)[len] = 0;
87 SvCUR_set (t2, len);
88
89 return SvPVX (t2);
90 }
91 #else
92 return SvPVbyte_nolen (sv);
93 #endif
94 }
95
96 static void
97 debug_errcall (const DB_ENV *dbenv, const char *errpfx, const char *msg)
98 {
99 printf ("err[%s]\n", msg);
100 }
101
102 static void
103 debug_msgcall (const DB_ENV *dbenv, const char *msg)
104 {
105 printf ("msg[%s]\n", msg);
106 }
107
108 static char *
109 strdup_ornull (const char *s)
110 {
111 return s ? strdup (s) : 0;
112 }
113
114 static void
115 sv_to_dbt (DBT *dbt, SV *sv)
116 {
117 STRLEN len;
118 char *data = SvPVbyte (sv, len);
119
120 dbt->data = malloc (len);
121 memcpy (dbt->data, data, len);
122 dbt->size = len;
123 dbt->flags = DB_DBT_REALLOC;
124 }
125
126 static void
127 dbt_to_sv (SV *sv, DBT *dbt)
128 {
129 if (sv)
130 {
131 SvREADONLY_off (sv);
132 sv_setpvn_mg (sv, dbt->data, dbt->size);
133 SvREFCNT_dec (sv);
134 }
135
136 free (dbt->data);
137 }
138
139 enum {
140 REQ_QUIT,
141 REQ_ENV_OPEN, REQ_ENV_CLOSE, REQ_ENV_TXN_CHECKPOINT, REQ_ENV_LOCK_DETECT,
142 REQ_ENV_MEMP_SYNC, REQ_ENV_MEMP_TRICKLE, REQ_ENV_DBREMOVE, REQ_ENV_DBRENAME,
143 REQ_DB_OPEN, REQ_DB_CLOSE, REQ_DB_COMPACT, REQ_DB_SYNC, REQ_DB_UPGRADE,
144 REQ_DB_PUT, REQ_DB_GET, REQ_DB_PGET, REQ_DB_DEL, REQ_DB_KEY_RANGE,
145 REQ_TXN_COMMIT, REQ_TXN_ABORT, REQ_TXN_FINISH,
146 REQ_C_CLOSE, REQ_C_COUNT, REQ_C_PUT, REQ_C_GET, REQ_C_PGET, REQ_C_DEL,
147 REQ_SEQ_OPEN, REQ_SEQ_CLOSE, REQ_SEQ_GET, REQ_SEQ_REMOVE,
148 };
149
150 typedef struct bdb_cb
151 {
152 struct bdb_cb *volatile next;
153 SV *callback;
154 int type, pri, result;
155
156 DB_ENV *env;
157 DB *db;
158 DB_TXN *txn;
159 DBC *dbc;
160
161 UV uv1;
162 int int1, int2;
163 U32 uint1, uint2;
164 char *buf1, *buf2, *buf3;
165 SV *sv1, *sv2, *sv3;
166
167 DBT dbt1, dbt2, dbt3;
168 DB_KEY_RANGE key_range;
169 DB_SEQUENCE *seq;
170 db_seq_t seq_t;
171 } bdb_cb;
172
173 typedef bdb_cb *bdb_req;
174
175 enum {
176 PRI_MIN = -4,
177 PRI_MAX = 4,
178
179 DEFAULT_PRI = 0,
180 PRI_BIAS = -PRI_MIN,
181 NUM_PRI = PRI_MAX + PRI_BIAS + 1,
182 };
183
184 #define AIO_TICKS ((1000000 + 1023) >> 10)
185
186 static SV *on_next_submit;
187
188 static unsigned int max_poll_time = 0;
189 static unsigned int max_poll_reqs = 0;
190
191 /* calculcate time difference in ~1/AIO_TICKS of a second */
192 static int tvdiff (struct timeval *tv1, struct timeval *tv2)
193 {
194 return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
195 + ((tv2->tv_usec - tv1->tv_usec) >> 10);
196 }
197
198 static int next_pri = DEFAULT_PRI + PRI_BIAS;
199
200 static unsigned int started, idle, wanted;
201
202 /* worker threads management */
203 static mutex_t wrklock = X_MUTEX_INIT;
204
205 typedef struct worker {
206 /* locked by wrklock */
207 struct worker *prev, *next;
208
209 thread_t tid;
210
211 /* locked by reslock, reqlock or wrklock */
212 bdb_req req; /* currently processed request */
213 void *dbuf;
214 DIR *dirp;
215 } worker;
216
217 static worker wrk_first = { &wrk_first, &wrk_first, 0 };
218
219 static void worker_clear (worker *wrk)
220 {
221 }
222
223 static void worker_free (worker *wrk)
224 {
225 wrk->next->prev = wrk->prev;
226 wrk->prev->next = wrk->next;
227
228 free (wrk);
229 }
230
231 static volatile unsigned int nreqs, nready, npending;
232 static volatile unsigned int max_idle = 4;
233 static volatile unsigned int max_outstanding = 0xffffffff;
234 static int respipe_osf [2], respipe [2] = { -1, -1 };
235
236 static mutex_t reslock = X_MUTEX_INIT;
237 static mutex_t reqlock = X_MUTEX_INIT;
238 static cond_t reqwait = X_COND_INIT;
239
240 #if WORDACCESS_UNSAFE
241
242 static unsigned int get_nready (void)
243 {
244 unsigned int retval;
245
246 X_LOCK (reqlock);
247 retval = nready;
248 X_UNLOCK (reqlock);
249
250 return retval;
251 }
252
253 static unsigned int get_npending (void)
254 {
255 unsigned int retval;
256
257 X_LOCK (reslock);
258 retval = npending;
259 X_UNLOCK (reslock);
260
261 return retval;
262 }
263
264 static unsigned int get_nthreads (void)
265 {
266 unsigned int retval;
267
268 X_LOCK (wrklock);
269 retval = started;
270 X_UNLOCK (wrklock);
271
272 return retval;
273 }
274
275 #else
276
277 # define get_nready() nready
278 # define get_npending() npending
279 # define get_nthreads() started
280
281 #endif
282
283 /*
284 * a somewhat faster data structure might be nice, but
285 * with 8 priorities this actually needs <20 insns
286 * per shift, the most expensive operation.
287 */
288 typedef struct {
289 bdb_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
290 int size;
291 } reqq;
292
293 static reqq req_queue;
294 static reqq res_queue;
295
296 int reqq_push (reqq *q, bdb_req req)
297 {
298 int pri = req->pri;
299 req->next = 0;
300
301 if (q->qe[pri])
302 {
303 q->qe[pri]->next = req;
304 q->qe[pri] = req;
305 }
306 else
307 q->qe[pri] = q->qs[pri] = req;
308
309 return q->size++;
310 }
311
312 bdb_req reqq_shift (reqq *q)
313 {
314 int pri;
315
316 if (!q->size)
317 return 0;
318
319 --q->size;
320
321 for (pri = NUM_PRI; pri--; )
322 {
323 bdb_req req = q->qs[pri];
324
325 if (req)
326 {
327 if (!(q->qs[pri] = req->next))
328 q->qe[pri] = 0;
329
330 return req;
331 }
332 }
333
334 abort ();
335 }
336
337 static int poll_cb (void);
338 static void req_free (bdb_req req);
339 static void req_cancel (bdb_req req);
340
341 static int req_invoke (bdb_req req)
342 {
343 dSP;
344
345 if (req->callback)
346 {
347 ENTER;
348 SAVETMPS;
349 PUSHMARK (SP);
350
351 switch (req->type)
352 {
353 case REQ_DB_CLOSE:
354 SvREFCNT_dec (req->sv1);
355 break;
356
357 case REQ_DB_GET:
358 case REQ_DB_PGET:
359 dbt_to_sv (req->sv3, &req->dbt3);
360 break;
361
362 case REQ_C_GET:
363 case REQ_C_PGET:
364 dbt_to_sv (req->sv1, &req->dbt1);
365 dbt_to_sv (req->sv2, &req->dbt2);
366 dbt_to_sv (req->sv3, &req->dbt3);
367 break;
368
369 case REQ_DB_PUT:
370 case REQ_C_PUT:
371 dbt_to_sv (0, &req->dbt1);
372 dbt_to_sv (0, &req->dbt2);
373 break;
374
375 case REQ_DB_KEY_RANGE:
376 {
377 AV *av = newAV ();
378
379 av_push (av, newSVnv (req->key_range.less));
380 av_push (av, newSVnv (req->key_range.equal));
381 av_push (av, newSVnv (req->key_range.greater));
382
383 SvREADONLY_off (req->sv1);
384 sv_setsv_mg (req->sv1, newRV_noinc ((SV *)av));
385 SvREFCNT_dec (req->sv1);
386 }
387 break;
388
389 case REQ_SEQ_GET:
390 SvREADONLY_off (req->sv1);
391
392 if (sizeof (IV) > 4)
393 sv_setiv_mg (req->sv1, (IV)req->seq_t);
394 else
395 sv_setnv_mg (req->sv1, (NV)req->seq_t);
396
397 SvREFCNT_dec (req->sv1);
398 break;
399 }
400
401 errno = req->result;
402
403 PUTBACK;
404 call_sv (req->callback, G_VOID | G_EVAL);
405 SPAGAIN;
406
407 FREETMPS;
408 LEAVE;
409 }
410
411 return !SvTRUE (ERRSV);
412 }
413
414 static void req_free (bdb_req req)
415 {
416 free (req->buf1);
417 free (req->buf2);
418 free (req->buf3);
419 Safefree (req);
420 }
421
422 #ifdef USE_SOCKETS_AS_HANDLES
423 # define TO_SOCKET(x) (win32_get_osfhandle (x))
424 #else
425 # define TO_SOCKET(x) (x)
426 #endif
427
428 static void
429 create_respipe (void)
430 {
431 #ifdef _WIN32
432 int arg; /* argg */
433 #endif
434 int old_readfd = respipe [0];
435
436 if (respipe [1] >= 0)
437 respipe_close (TO_SOCKET (respipe [1]));
438
439 #ifdef _WIN32
440 if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
441 #else
442 if (pipe (respipe))
443 #endif
444 croak ("unable to initialize result pipe");
445
446 if (old_readfd >= 0)
447 {
448 if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
449 croak ("unable to initialize result pipe(2)");
450
451 respipe_close (respipe [0]);
452 respipe [0] = old_readfd;
453 }
454
455 #ifdef _WIN32
456 arg = 1;
457 if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
458 || ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
459 #else
460 if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
461 || fcntl (respipe [1], F_SETFL, O_NONBLOCK))
462 #endif
463 croak ("unable to initialize result pipe(3)");
464
465 respipe_osf [0] = TO_SOCKET (respipe [0]);
466 respipe_osf [1] = TO_SOCKET (respipe [1]);
467 }
468
469 X_THREAD_PROC (bdb_proc);
470
471 static void start_thread (void)
472 {
473 worker *wrk = calloc (1, sizeof (worker));
474
475 if (!wrk)
476 croak ("unable to allocate worker thread data");
477
478 X_LOCK (wrklock);
479 if (thread_create (&wrk->tid, bdb_proc, (void *)wrk))
480 {
481 wrk->prev = &wrk_first;
482 wrk->next = wrk_first.next;
483 wrk_first.next->prev = wrk;
484 wrk_first.next = wrk;
485 ++started;
486 }
487 else
488 free (wrk);
489
490 X_UNLOCK (wrklock);
491 }
492
493 static void maybe_start_thread (void)
494 {
495 if (get_nthreads () >= wanted)
496 return;
497
498 /* todo: maybe use idle here, but might be less exact */
499 if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
500 return;
501
502 start_thread ();
503 }
504
505 static void req_send (bdb_req req)
506 {
507 SV *wait_callback = 0;
508
509 if (on_next_submit)
510 {
511 dSP;
512 SV *cb = sv_2mortal (on_next_submit);
513
514 on_next_submit = 0;
515
516 PUSHMARK (SP);
517 PUTBACK;
518 call_sv (cb, G_DISCARD | G_EVAL);
519 }
520
521 // synthesize callback if none given
522 if (!req->callback)
523 {
524 int count;
525
526 dSP;
527 PUSHMARK (SP);
528 PUTBACK;
529 count = call_sv (prepare_cb, G_ARRAY);
530 SPAGAIN;
531
532 if (count != 2)
533 croak ("prepare callback must return exactly two values\n");
534
535 wait_callback = POPs;
536 SvREFCNT_dec (req->callback);
537 req->callback = SvREFCNT_inc (POPs);
538 }
539
540 ++nreqs;
541
542 X_LOCK (reqlock);
543 ++nready;
544 reqq_push (&req_queue, req);
545 X_COND_SIGNAL (reqwait);
546 X_UNLOCK (reqlock);
547
548 maybe_start_thread ();
549
550 if (wait_callback)
551 {
552 dSP;
553 PUSHMARK (SP);
554 PUTBACK;
555 call_sv (wait_callback, G_DISCARD);
556 }
557 }
558
559 static void end_thread (void)
560 {
561 bdb_req req;
562
563 Newz (0, req, 1, bdb_cb);
564
565 req->type = REQ_QUIT;
566 req->pri = PRI_MAX + PRI_BIAS;
567
568 X_LOCK (reqlock);
569 reqq_push (&req_queue, req);
570 X_COND_SIGNAL (reqwait);
571 X_UNLOCK (reqlock);
572
573 X_LOCK (wrklock);
574 --started;
575 X_UNLOCK (wrklock);
576 }
577
578 static void set_max_idle (int nthreads)
579 {
580 if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
581 max_idle = nthreads <= 0 ? 1 : nthreads;
582 if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
583 }
584
585 static void min_parallel (int nthreads)
586 {
587 if (wanted < nthreads)
588 wanted = nthreads;
589 }
590
591 static void max_parallel (int nthreads)
592 {
593 if (wanted > nthreads)
594 wanted = nthreads;
595
596 while (started > wanted)
597 end_thread ();
598 }
599
600 static void poll_wait (void)
601 {
602 fd_set rfd;
603
604 while (nreqs)
605 {
606 int size;
607 if (WORDACCESS_UNSAFE) X_LOCK (reslock);
608 size = res_queue.size;
609 if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
610
611 if (size)
612 return;
613
614 maybe_start_thread ();
615
616 FD_ZERO (&rfd);
617 FD_SET (respipe [0], &rfd);
618
619 PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
620 }
621 }
622
623 static int poll_cb (void)
624 {
625 dSP;
626 int count = 0;
627 int maxreqs = max_poll_reqs;
628 int do_croak = 0;
629 struct timeval tv_start, tv_now;
630 bdb_req req;
631
632 if (max_poll_time)
633 gettimeofday (&tv_start, 0);
634
635 for (;;)
636 {
637 for (;;)
638 {
639 maybe_start_thread ();
640
641 X_LOCK (reslock);
642 req = reqq_shift (&res_queue);
643
644 if (req)
645 {
646 --npending;
647
648 if (!res_queue.size)
649 {
650 /* read any signals sent by the worker threads */
651 char buf [4];
652 while (respipe_read (respipe [0], buf, 4) == 4)
653 ;
654 }
655 }
656
657 X_UNLOCK (reslock);
658
659 if (!req)
660 break;
661
662 --nreqs;
663
664 if (!req_invoke (req))
665 {
666 req_free (req);
667 croak (0);
668 }
669
670 count++;
671
672 req_free (req);
673
674 if (maxreqs && !--maxreqs)
675 break;
676
677 if (max_poll_time)
678 {
679 gettimeofday (&tv_now, 0);
680
681 if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
682 break;
683 }
684 }
685
686 if (nreqs <= max_outstanding)
687 break;
688
689 poll_wait ();
690
691 ++maxreqs;
692 }
693
694 return count;
695 }
696
697 /*****************************************************************************/
698
699 X_THREAD_PROC (bdb_proc)
700 {
701 bdb_req req;
702 struct timespec ts;
703 worker *self = (worker *)thr_arg;
704
705 /* try to distribute timeouts somewhat evenly */
706 ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
707
708 for (;;)
709 {
710 ts.tv_sec = time (0) + IDLE_TIMEOUT;
711
712 X_LOCK (reqlock);
713
714 for (;;)
715 {
716 self->req = req = reqq_shift (&req_queue);
717
718 if (req)
719 break;
720
721 ++idle;
722
723 if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
724 == ETIMEDOUT)
725 {
726 if (idle > max_idle)
727 {
728 --idle;
729 X_UNLOCK (reqlock);
730 X_LOCK (wrklock);
731 --started;
732 X_UNLOCK (wrklock);
733 goto quit;
734 }
735
736 /* we are allowed to idle, so do so without any timeout */
737 X_COND_WAIT (reqwait, reqlock);
738 ts.tv_sec = time (0) + IDLE_TIMEOUT;
739 }
740
741 --idle;
742 }
743
744 --nready;
745
746 X_UNLOCK (reqlock);
747
748 switch (req->type)
749 {
750 case REQ_QUIT:
751 req->result = ENOSYS;
752 goto quit;
753
754 case REQ_ENV_OPEN:
755 req->result = req->env->open (req->env, req->buf1, req->uint1, req->int1);
756 break;
757
758 case REQ_ENV_CLOSE:
759 req->result = req->env->close (req->env, req->uint1);
760 break;
761
762 case REQ_ENV_TXN_CHECKPOINT:
763 req->result = req->env->txn_checkpoint (req->env, req->uint1, req->int1, req->uint2);
764 break;
765
766 case REQ_ENV_LOCK_DETECT:
767 req->result = req->env->lock_detect (req->env, req->uint1, req->uint2, &req->int1);
768 break;
769
770 case REQ_ENV_MEMP_SYNC:
771 req->result = req->env->memp_sync (req->env, 0);
772 break;
773
774 case REQ_ENV_MEMP_TRICKLE:
775 req->result = req->env->memp_trickle (req->env, req->int1, &req->int2);
776 break;
777
778 case REQ_ENV_DBREMOVE:
779 req->result = req->env->dbremove (req->env, req->txn, req->buf1, req->buf2, req->uint1);
780 break;
781
782 case REQ_ENV_DBRENAME:
783 req->result = req->env->dbrename (req->env, req->txn, req->buf1, req->buf2, req->buf3, req->uint1);
784 break;
785
786 case REQ_DB_OPEN:
787 req->result = req->db->open (req->db, req->txn, req->buf1, req->buf2, req->int1, req->uint1, req->int2);
788 break;
789
790 case REQ_DB_CLOSE:
791 req->result = req->db->close (req->db, req->uint1);
792 break;
793
794 case REQ_DB_COMPACT:
795 req->result = req->db->compact (req->db, req->txn, &req->dbt1, &req->dbt2, 0, req->uint1, 0);
796 break;
797
798 case REQ_DB_SYNC:
799 req->result = req->db->sync (req->db, req->uint1);
800 break;
801
802 case REQ_DB_UPGRADE:
803 req->result = req->db->upgrade (req->db, req->buf1, req->uint1);
804 break;
805
806 case REQ_DB_PUT:
807 req->result = req->db->put (req->db, req->txn, &req->dbt1, &req->dbt2, req->uint1);
808 break;
809
810 case REQ_DB_GET:
811 req->result = req->db->get (req->db, req->txn, &req->dbt1, &req->dbt3, req->uint1);
812 break;
813
814 case REQ_DB_PGET:
815 req->result = req->db->pget (req->db, req->txn, &req->dbt1, &req->dbt2, &req->dbt3, req->uint1);
816 break;
817
818 case REQ_DB_DEL:
819 req->result = req->db->del (req->db, req->txn, &req->dbt1, req->uint1);
820 break;
821
822 case REQ_DB_KEY_RANGE:
823 req->result = req->db->key_range (req->db, req->txn, &req->dbt1, &req->key_range, req->uint1);
824 break;
825
826 case REQ_TXN_COMMIT:
827 req->result = req->txn->commit (req->txn, req->uint1);
828 break;
829
830 case REQ_TXN_ABORT:
831 req->result = req->txn->abort (req->txn);
832 break;
833
834 case REQ_TXN_FINISH:
835 if (req->txn->flags & TXN_DEADLOCK)
836 {
837 req->result = req->txn->abort (req->txn);
838 if (!req->result)
839 req->result = DB_LOCK_DEADLOCK;
840 }
841 else
842 req->result = req->txn->commit (req->txn, req->uint1);
843 break;
844
845 case REQ_C_CLOSE:
846 req->result = req->dbc->c_close (req->dbc);
847 break;
848
849 case REQ_C_COUNT:
850 {
851 db_recno_t recno;
852 req->result = req->dbc->c_count (req->dbc, &recno, req->uint1);
853 req->uv1 = recno;
854 }
855 break;
856
857 case REQ_C_PUT:
858 req->result = req->dbc->c_put (req->dbc, &req->dbt1, &req->dbt2, req->uint1);
859 break;
860
861 case REQ_C_GET:
862 req->result = req->dbc->c_get (req->dbc, &req->dbt1, &req->dbt3, req->uint1);
863 break;
864
865 case REQ_C_PGET:
866 req->result = req->dbc->c_pget (req->dbc, &req->dbt1, &req->dbt2, &req->dbt3, req->uint1);
867 break;
868
869 case REQ_C_DEL:
870 req->result = req->dbc->c_del (req->dbc, req->uint1);
871 break;
872
873 case REQ_SEQ_OPEN:
874 req->result = req->seq->open (req->seq, req->txn, &req->dbt1, req->uint1);
875 break;
876
877 case REQ_SEQ_CLOSE:
878 req->result = req->seq->close (req->seq, req->uint1);
879 break;
880
881 case REQ_SEQ_GET:
882 req->result = req->seq->get (req->seq, req->txn, req->int1, &req->seq_t, req->uint1);
883 break;
884
885 case REQ_SEQ_REMOVE:
886 req->result = req->seq->remove (req->seq, req->txn, req->uint1);
887 break;
888
889 default:
890 req->result = ENOSYS;
891 break;
892 }
893
894 if (req->txn && (req->result > 0 || req->result == DB_LOCK_NOTGRANTED))
895 req->txn->flags |= TXN_DEADLOCK;
896
897 X_LOCK (reslock);
898
899 ++npending;
900
901 if (!reqq_push (&res_queue, req))
902 /* write a dummy byte to the pipe so fh becomes ready */
903 respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
904
905 self->req = 0;
906 worker_clear (self);
907
908 X_UNLOCK (reslock);
909 }
910
911 quit:
912 X_LOCK (wrklock);
913 worker_free (self);
914 X_UNLOCK (wrklock);
915
916 return 0;
917 }
918
919 /*****************************************************************************/
920
921 static void atfork_prepare (void)
922 {
923 X_LOCK (wrklock);
924 X_LOCK (reqlock);
925 X_LOCK (reslock);
926 }
927
928 static void atfork_parent (void)
929 {
930 X_UNLOCK (reslock);
931 X_UNLOCK (reqlock);
932 X_UNLOCK (wrklock);
933 }
934
935 static void atfork_child (void)
936 {
937 bdb_req prv;
938
939 while (prv = reqq_shift (&req_queue))
940 req_free (prv);
941
942 while (prv = reqq_shift (&res_queue))
943 req_free (prv);
944
945 while (wrk_first.next != &wrk_first)
946 {
947 worker *wrk = wrk_first.next;
948
949 if (wrk->req)
950 req_free (wrk->req);
951
952 worker_clear (wrk);
953 worker_free (wrk);
954 }
955
956 started = 0;
957 idle = 0;
958 nreqs = 0;
959 nready = 0;
960 npending = 0;
961
962 create_respipe ();
963
964 atfork_parent ();
965 }
966
967 #define dREQ(reqtype) \
968 bdb_req req; \
969 int req_pri = next_pri; \
970 next_pri = DEFAULT_PRI + PRI_BIAS; \
971 \
972 if (callback && SvOK (callback)) \
973 croak ("callback has illegal type or extra arguments"); \
974 \
975 Newz (0, req, 1, bdb_cb); \
976 if (!req) \
977 croak ("out of memory during bdb_req allocation"); \
978 \
979 req->callback = cb ? SvREFCNT_inc (cb) : 0; \
980 req->type = (reqtype); \
981 req->pri = req_pri
982
983 #define REQ_SEND \
984 req_send (req)
985
986 #define SvPTR(var, arg, type, class, nullok) \
987 if (!SvOK (arg)) \
988 { \
989 if (nullok != 1) \
990 croak (# var " must be a " # class " object, not undef"); \
991 \
992 (var) = 0; \
993 } \
994 else if (sv_derived_from ((arg), # class)) \
995 { \
996 IV tmp = SvIV ((SV*) SvRV (arg)); \
997 (var) = INT2PTR (type, tmp); \
998 if (!var && nullok != 2) \
999 croak (# var " is not a valid " # class " object anymore"); \
1000 } \
1001 else \
1002 croak (# var " is not of type " # class);
1003
1004 static void
1005 ptr_nuke (SV *sv)
1006 {
1007 assert (SvROK (sv));
1008 sv_setiv (SvRV (sv), 0);
1009 }
1010
1011 static int
1012 errno_get (pTHX_ SV *sv, MAGIC *mg)
1013 {
1014 if (*mg->mg_ptr == '!') // should always be the case
1015 if (-30999 <= errno && errno <= -30800)
1016 {
1017 sv_setnv (sv, (NV)errno);
1018 sv_setpv (sv, db_strerror (errno));
1019 SvNOK_on (sv); /* what a wonderful hack! */
1020 // ^^^ copied from perl sources
1021 return 0;
1022 }
1023
1024 return PL_vtbl_sv.svt_get (aTHX_ sv, mg);
1025 }
1026
1027 static MGVTBL vtbl_errno;
1028
1029 // this wonderful hack :( patches perl's $! variable to support our errno values
1030 static void
1031 patch_errno (void)
1032 {
1033 SV *sv;
1034 MAGIC *mg;
1035
1036 if (!(sv = get_sv ("!", 1)))
1037 return;
1038
1039 if (!(mg = mg_find (sv, PERL_MAGIC_sv)))
1040 return;
1041
1042 if (mg->mg_virtual != &PL_vtbl_sv)
1043 return;
1044
1045 vtbl_errno = PL_vtbl_sv;
1046 vtbl_errno.svt_get = errno_get;
1047 mg->mg_virtual = &vtbl_errno;
1048 }
1049
1050 #if __GNUC__ >= 4
1051 # define noinline __attribute__ ((noinline))
1052 #else
1053 # define noinline
1054 #endif
1055
1056 static noinline SV *
1057 pop_callback (I32 *ritems, SV *sv)
1058 {
1059 if (SvROK (sv))
1060 {
1061 HV *st;
1062 GV *gvp;
1063 CV *cv;
1064 const char *name;
1065
1066 /* forgive me */
1067 if (SvTYPE (SvRV (sv)) == SVt_PVMG
1068 && (st = SvSTASH (SvRV (sv)))
1069 && (name = HvNAME_get (st))
1070 && (name [0] == 'B' && name [1] == 'D' && name [2] == 'B' && name [3] == ':'))
1071 return 0;
1072
1073 if ((cv = sv_2cv (sv, &st, &gvp, 0)))
1074 {
1075 --*ritems;
1076 return (SV *)cv;
1077 }
1078 }
1079
1080 return 0;
1081 }
1082
1083 #define CALLBACK SV *cb = pop_callback (&items, ST (items - 1));
1084
1085 MODULE = BDB PACKAGE = BDB
1086
1087 PROTOTYPES: ENABLE
1088
1089 BOOT:
1090 {
1091 HV *stash = gv_stashpv ("BDB", 1);
1092
1093 static const struct {
1094 const char *name;
1095 IV iv;
1096 } *civ, const_iv[] = {
1097 #define const_iv(name) { # name, (IV)DB_ ## name },
1098 const_iv (RPCCLIENT)
1099 const_iv (INIT_CDB)
1100 const_iv (INIT_LOCK)
1101 const_iv (INIT_LOG)
1102 const_iv (INIT_MPOOL)
1103 const_iv (INIT_REP)
1104 const_iv (INIT_TXN)
1105 const_iv (RECOVER)
1106 const_iv (INIT_TXN)
1107 const_iv (RECOVER_FATAL)
1108 const_iv (CREATE)
1109 const_iv (RDONLY)
1110 const_iv (USE_ENVIRON)
1111 const_iv (USE_ENVIRON_ROOT)
1112 const_iv (LOCKDOWN)
1113 const_iv (PRIVATE)
1114 const_iv (REGISTER)
1115 const_iv (SYSTEM_MEM)
1116 const_iv (AUTO_COMMIT)
1117 const_iv (CDB_ALLDB)
1118 const_iv (DIRECT_DB)
1119 const_iv (DSYNC_DB)
1120 const_iv (NOLOCKING)
1121 const_iv (NOMMAP)
1122 const_iv (NOPANIC)
1123 const_iv (OVERWRITE)
1124 const_iv (PANIC_ENVIRONMENT)
1125 const_iv (REGION_INIT)
1126 const_iv (TIME_NOTGRANTED)
1127 const_iv (TXN_NOSYNC)
1128 const_iv (TXN_NOT_DURABLE)
1129 const_iv (TXN_WRITE_NOSYNC)
1130 const_iv (WRITECURSOR)
1131 const_iv (YIELDCPU)
1132 const_iv (ENCRYPT_AES)
1133 const_iv (XA_CREATE)
1134 const_iv (BTREE)
1135 const_iv (HASH)
1136 const_iv (QUEUE)
1137 const_iv (RECNO)
1138 const_iv (UNKNOWN)
1139 const_iv (EXCL)
1140 const_iv (READ_COMMITTED)
1141 const_iv (READ_UNCOMMITTED)
1142 const_iv (TRUNCATE)
1143 const_iv (NOSYNC)
1144 const_iv (CHKSUM)
1145 const_iv (ENCRYPT)
1146 const_iv (DUP)
1147 const_iv (DUPSORT)
1148 const_iv (RECNUM)
1149 const_iv (RENUMBER)
1150 const_iv (REVSPLITOFF)
1151 const_iv (INORDER)
1152 const_iv (CONSUME)
1153 const_iv (CONSUME_WAIT)
1154 const_iv (GET_BOTH)
1155 const_iv (GET_BOTH_RANGE)
1156 //const_iv (SET_RECNO)
1157 //const_iv (MULTIPLE)
1158 const_iv (SNAPSHOT)
1159 const_iv (JOIN_ITEM)
1160 const_iv (JOIN_NOSORT)
1161 const_iv (RMW)
1162
1163 const_iv (NOTFOUND)
1164 const_iv (KEYEMPTY)
1165 const_iv (LOCK_DEADLOCK)
1166 const_iv (LOCK_NOTGRANTED)
1167 const_iv (RUNRECOVERY)
1168 const_iv (OLD_VERSION)
1169 const_iv (REP_HANDLE_DEAD)
1170 const_iv (REP_LOCKOUT)
1171 const_iv (SECONDARY_BAD)
1172
1173 const_iv (FREE_SPACE)
1174 const_iv (FREELIST_ONLY)
1175
1176 const_iv (APPEND)
1177 const_iv (NODUPDATA)
1178 const_iv (NOOVERWRITE)
1179
1180 const_iv (TXN_NOWAIT)
1181 const_iv (TXN_SYNC)
1182
1183 const_iv (SET_LOCK_TIMEOUT)
1184 const_iv (SET_TXN_TIMEOUT)
1185
1186 const_iv (FIRST)
1187 const_iv (NEXT)
1188 const_iv (NEXT_DUP)
1189 const_iv (NEXT_NODUP)
1190 const_iv (PREV)
1191 const_iv (PREV_NODUP)
1192 const_iv (SET)
1193 const_iv (SET_RANGE)
1194 const_iv (LAST)
1195 const_iv (BEFORE)
1196 const_iv (AFTER)
1197 const_iv (CURRENT)
1198 const_iv (KEYFIRST)
1199 const_iv (KEYLAST)
1200 const_iv (NODUPDATA)
1201
1202 const_iv (FORCE)
1203
1204 const_iv (LOCK_DEFAULT)
1205 const_iv (LOCK_EXPIRE)
1206 const_iv (LOCK_MAXLOCKS)
1207 const_iv (LOCK_MAXWRITE)
1208 const_iv (LOCK_MINLOCKS)
1209 const_iv (LOCK_MINWRITE)
1210 const_iv (LOCK_OLDEST)
1211 const_iv (LOCK_RANDOM)
1212 const_iv (LOCK_YOUNGEST)
1213
1214 const_iv (SEQ_DEC)
1215 const_iv (SEQ_INC)
1216 const_iv (SEQ_WRAP)
1217
1218 const_iv (BUFFER_SMALL)
1219 const_iv (DONOTINDEX)
1220 const_iv (KEYEMPTY )
1221 const_iv (KEYEXIST )
1222 const_iv (LOCK_DEADLOCK)
1223 const_iv (LOCK_NOTGRANTED)
1224 const_iv (LOG_BUFFER_FULL)
1225 const_iv (NOSERVER)
1226 const_iv (NOSERVER_HOME)
1227 const_iv (NOSERVER_ID)
1228 const_iv (NOTFOUND)
1229 const_iv (PAGE_NOTFOUND)
1230 const_iv (REP_DUPMASTER)
1231 const_iv (REP_HANDLE_DEAD)
1232 const_iv (REP_HOLDELECTION)
1233 const_iv (REP_IGNORE)
1234 const_iv (REP_ISPERM)
1235 const_iv (REP_JOIN_FAILURE)
1236 const_iv (REP_LOCKOUT)
1237 const_iv (REP_NEWMASTER)
1238 const_iv (REP_NEWSITE)
1239 const_iv (REP_NOTPERM)
1240 const_iv (REP_UNAVAIL)
1241 const_iv (RUNRECOVERY)
1242 const_iv (SECONDARY_BAD)
1243 const_iv (VERIFY_BAD)
1244 const_iv (VERSION_MISMATCH)
1245
1246 const_iv (VERB_DEADLOCK)
1247 const_iv (VERB_RECOVERY)
1248 const_iv (VERB_REGISTER)
1249 const_iv (VERB_REPLICATION)
1250 const_iv (VERB_WAITSFOR)
1251
1252 const_iv (VERSION_MAJOR)
1253 const_iv (VERSION_MINOR)
1254 const_iv (VERSION_PATCH)
1255 #if DB_VERSION_MINOR >= 5
1256 const_iv (MULTIVERSION)
1257 const_iv (TXN_SNAPSHOT)
1258 #endif
1259 #if DB_VERSION_MINOR >= 6
1260 const_iv (PREV_DUP)
1261 const_iv (PRIORITY_UNCHANGED)
1262 const_iv (PRIORITY_VERY_LOW)
1263 const_iv (PRIORITY_LOW)
1264 const_iv (PRIORITY_DEFAULT)
1265 const_iv (PRIORITY_HIGH)
1266 const_iv (PRIORITY_VERY_HIGH)
1267 #endif
1268 #if DB_VERSION_MINOR >= 7
1269 const_iv (LOG_DIRECT)
1270 const_iv (LOG_DSYNC)
1271 const_iv (LOG_AUTO_REMOVE)
1272 const_iv (LOG_IN_MEMORY)
1273 const_iv (LOG_ZERO)
1274 #else
1275 const_iv (DIRECT_LOG)
1276 const_iv (DSYNC_LOG)
1277 const_iv (LOG_AUTOREMOVE)
1278 const_iv (LOG_INMEMORY)
1279 #endif
1280 };
1281
1282 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1283 newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1284
1285 {
1286 /* we currently only allow version, minor-version and patchlevel to go up to 255 */
1287 char vstring[3] = { DB_VERSION_MAJOR, DB_VERSION_MINOR, DB_VERSION_PATCH };
1288
1289 newCONSTSUB (stash, "VERSION_v", newSVpvn (vstring, 3));
1290 }
1291
1292 newCONSTSUB (stash, "VERSION_STRING", newSVpv (DB_VERSION_STRING, 0));
1293
1294 create_respipe ();
1295
1296 X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1297 patch_errno ();
1298 }
1299
1300 void
1301 max_poll_reqs (int nreqs)
1302 PROTOTYPE: $
1303 CODE:
1304 max_poll_reqs = nreqs;
1305
1306 void
1307 max_poll_time (double nseconds)
1308 PROTOTYPE: $
1309 CODE:
1310 max_poll_time = nseconds * AIO_TICKS;
1311
1312 void
1313 min_parallel (int nthreads)
1314 PROTOTYPE: $
1315
1316 void
1317 max_parallel (int nthreads)
1318 PROTOTYPE: $
1319
1320 void
1321 max_idle (int nthreads)
1322 PROTOTYPE: $
1323 CODE:
1324 set_max_idle (nthreads);
1325
1326 int
1327 max_outstanding (int maxreqs)
1328 PROTOTYPE: $
1329 CODE:
1330 RETVAL = max_outstanding;
1331 max_outstanding = maxreqs;
1332 OUTPUT:
1333 RETVAL
1334
1335 int
1336 dbreq_pri (int pri = 0)
1337 PROTOTYPE: ;$
1338 CODE:
1339 RETVAL = next_pri - PRI_BIAS;
1340 if (items > 0)
1341 {
1342 if (pri < PRI_MIN) pri = PRI_MIN;
1343 if (pri > PRI_MAX) pri = PRI_MAX;
1344 next_pri = pri + PRI_BIAS;
1345 }
1346 OUTPUT:
1347 RETVAL
1348
1349 void
1350 dbreq_nice (int nice = 0)
1351 CODE:
1352 nice = next_pri - nice;
1353 if (nice < PRI_MIN) nice = PRI_MIN;
1354 if (nice > PRI_MAX) nice = PRI_MAX;
1355 next_pri = nice + PRI_BIAS;
1356
1357 void
1358 flush ()
1359 PROTOTYPE:
1360 CODE:
1361 while (nreqs)
1362 {
1363 poll_wait ();
1364 poll_cb ();
1365 }
1366
1367 int
1368 poll ()
1369 PROTOTYPE:
1370 CODE:
1371 poll_wait ();
1372 RETVAL = poll_cb ();
1373 OUTPUT:
1374 RETVAL
1375
1376 int
1377 poll_fileno ()
1378 PROTOTYPE:
1379 CODE:
1380 RETVAL = respipe [0];
1381 OUTPUT:
1382 RETVAL
1383
1384 int
1385 poll_cb (...)
1386 PROTOTYPE:
1387 CODE:
1388 RETVAL = poll_cb ();
1389 OUTPUT:
1390 RETVAL
1391
1392 void
1393 poll_wait ()
1394 PROTOTYPE:
1395 CODE:
1396 poll_wait ();
1397
1398 int
1399 nreqs ()
1400 PROTOTYPE:
1401 CODE:
1402 RETVAL = nreqs;
1403 OUTPUT:
1404 RETVAL
1405
1406 int
1407 nready ()
1408 PROTOTYPE:
1409 CODE:
1410 RETVAL = get_nready ();
1411 OUTPUT:
1412 RETVAL
1413
1414 int
1415 npending ()
1416 PROTOTYPE:
1417 CODE:
1418 RETVAL = get_npending ();
1419 OUTPUT:
1420 RETVAL
1421
1422 int
1423 nthreads ()
1424 PROTOTYPE:
1425 CODE:
1426 if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1427 RETVAL = started;
1428 if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1429 OUTPUT:
1430 RETVAL
1431
1432 void
1433 set_sync_prepare (SV *cb)
1434 PROTOTYPE: &
1435 CODE:
1436 SvREFCNT_dec (prepare_cb);
1437 prepare_cb = newSVsv (cb);
1438
1439 char *
1440 strerror (int errorno = errno)
1441 PROTOTYPE: ;$
1442 CODE:
1443 RETVAL = db_strerror (errorno);
1444 OUTPUT:
1445 RETVAL
1446
1447 void _on_next_submit (SV *cb)
1448 CODE:
1449 SvREFCNT_dec (on_next_submit);
1450 on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
1451
1452 DB_ENV *
1453 db_env_create (U32 env_flags = 0)
1454 CODE:
1455 {
1456 errno = db_env_create (&RETVAL, env_flags);
1457 if (errno)
1458 croak ("db_env_create: %s", db_strerror (errno));
1459
1460 if (0)
1461 {
1462 RETVAL->set_errcall (RETVAL, debug_errcall);
1463 RETVAL->set_msgcall (RETVAL, debug_msgcall);
1464 }
1465 }
1466 OUTPUT:
1467 RETVAL
1468
1469 void
1470 db_env_open (DB_ENV *env, bdb_filename db_home, U32 open_flags, int mode, SV *callback = 0)
1471 PREINIT:
1472 CALLBACK
1473 CODE:
1474 {
1475 dREQ (REQ_ENV_OPEN);
1476 req->env = env;
1477 req->uint1 = open_flags | DB_THREAD;
1478 req->int1 = mode;
1479 req->buf1 = strdup_ornull (db_home);
1480 REQ_SEND;
1481 }
1482
1483 void
1484 db_env_close (DB_ENV *env, U32 flags = 0, SV *callback = 0)
1485 PREINIT:
1486 CALLBACK
1487 CODE:
1488 {
1489 dREQ (REQ_ENV_CLOSE);
1490 req->env = env;
1491 req->uint1 = flags;
1492 REQ_SEND;
1493 ptr_nuke (ST (0));
1494 }
1495
1496 void
1497 db_env_txn_checkpoint (DB_ENV *env, U32 kbyte = 0, U32 min = 0, U32 flags = 0, SV *callback = 0)
1498 PREINIT:
1499 CALLBACK
1500 CODE:
1501 {
1502 dREQ (REQ_ENV_TXN_CHECKPOINT);
1503 req->env = env;
1504 req->uint1 = kbyte;
1505 req->int1 = min;
1506 req->uint2 = flags;
1507 REQ_SEND;
1508 }
1509
1510 void
1511 db_env_lock_detect (DB_ENV *env, U32 flags = 0, U32 atype = DB_LOCK_DEFAULT, SV *dummy = 0, SV *callback = 0)
1512 PREINIT:
1513 CALLBACK
1514 CODE:
1515 {
1516 dREQ (REQ_ENV_LOCK_DETECT);
1517 req->env = env;
1518 req->uint1 = flags;
1519 req->uint2 = atype;
1520 /* req->int2 = 0; dummy */
1521 REQ_SEND;
1522 }
1523
1524 void
1525 db_env_memp_sync (DB_ENV *env, SV *dummy = 0, SV *callback = 0)
1526 PREINIT:
1527 CALLBACK
1528 CODE:
1529 {
1530 dREQ (REQ_ENV_MEMP_SYNC);
1531 req->env = env;
1532 REQ_SEND;
1533 }
1534
1535 void
1536 db_env_memp_trickle (DB_ENV *env, int percent, SV *dummy = 0, SV *callback = 0)
1537 PREINIT:
1538 CALLBACK
1539 CODE:
1540 {
1541 dREQ (REQ_ENV_MEMP_TRICKLE);
1542 req->env = env;
1543 req->int1 = percent;
1544 REQ_SEND;
1545 }
1546
1547 void
1548 db_env_dbremove (DB_ENV *env, DB_TXN_ornull *txnid, bdb_filename file, bdb_filename database, U32 flags = 0, SV *callback = 0)
1549 PREINIT:
1550 CALLBACK
1551 CODE:
1552 {
1553 dREQ (REQ_ENV_DBREMOVE);
1554 req->env = env;
1555 req->buf1 = strdup_ornull (file);
1556 req->buf2 = strdup_ornull (database);
1557 req->uint1 = flags;
1558 REQ_SEND;
1559 }
1560
1561 void
1562 db_env_dbrename (DB_ENV *env, DB_TXN_ornull *txnid, bdb_filename file, bdb_filename database, bdb_filename newname, U32 flags = 0, SV *callback = 0)
1563 PREINIT:
1564 CALLBACK
1565 CODE:
1566 {
1567 dREQ (REQ_ENV_DBRENAME);
1568 req->env = env;
1569 req->buf1 = strdup_ornull (file);
1570 req->buf2 = strdup_ornull (database);
1571 req->buf3 = strdup_ornull (newname);
1572 req->uint1 = flags;
1573 REQ_SEND;
1574 }
1575
1576 DB *
1577 db_create (DB_ENV *env = 0, U32 flags = 0)
1578 CODE:
1579 {
1580 errno = db_create (&RETVAL, env, flags);
1581 if (errno)
1582 croak ("db_create: %s", db_strerror (errno));
1583
1584 if (RETVAL)
1585 RETVAL->app_private = (void *)newSVsv (ST (0));
1586 }
1587 OUTPUT:
1588 RETVAL
1589
1590 void
1591 db_open (DB *db, DB_TXN_ornull *txnid, bdb_filename file, bdb_filename database, int type, U32 flags, int mode, SV *callback = 0)
1592 PREINIT:
1593 CALLBACK
1594 CODE:
1595 {
1596 dREQ (REQ_DB_OPEN);
1597 req->db = db;
1598 req->txn = txnid;
1599 req->buf1 = strdup_ornull (file);
1600 req->buf2 = strdup_ornull (database);
1601 req->int1 = type;
1602 req->uint1 = flags | DB_THREAD;
1603 req->int2 = mode;
1604 REQ_SEND;
1605 }
1606
1607 void
1608 db_close (DB *db, U32 flags = 0, SV *callback = 0)
1609 PREINIT:
1610 CALLBACK
1611 CODE:
1612 {
1613 dREQ (REQ_DB_CLOSE);
1614 req->db = db;
1615 req->uint1 = flags;
1616 req->sv1 = (SV *)db->app_private;
1617 REQ_SEND;
1618 ptr_nuke (ST (0));
1619 }
1620
1621 void
1622 db_compact (DB *db, DB_TXN_ornull *txn = 0, SV *start = 0, SV *stop = 0, SV *unused1 = 0, U32 flags = DB_FREE_SPACE, SV *unused2 = 0, SV *callback = 0)
1623 PREINIT:
1624 CALLBACK
1625 CODE:
1626 {
1627 dREQ (REQ_DB_COMPACT);
1628 req->db = db;
1629 req->txn = txn;
1630 sv_to_dbt (&req->dbt1, start);
1631 sv_to_dbt (&req->dbt2, stop);
1632 req->uint1 = flags;
1633 REQ_SEND;
1634 }
1635
1636 void
1637 db_sync (DB *db, U32 flags = 0, SV *callback = 0)
1638 PREINIT:
1639 CALLBACK
1640 CODE:
1641 {
1642 dREQ (REQ_DB_SYNC);
1643 req->db = db;
1644 req->uint1 = flags;
1645 REQ_SEND;
1646 }
1647
1648 void
1649 db_upgrade (DB *db, bdb_filename file, U32 flags = 0, SV *callback = 0)
1650 PREINIT:
1651 CALLBACK
1652 CODE:
1653 {
1654 dREQ (REQ_DB_SYNC);
1655 req->db = db;
1656 req->buf1 = strdup (file);
1657 req->uint1 = flags;
1658 REQ_SEND;
1659 }
1660
1661 void
1662 db_key_range (DB *db, DB_TXN_ornull *txn, SV *key, SV *key_range, U32 flags = 0, SV *callback = 0)
1663 PREINIT:
1664 CALLBACK
1665 CODE:
1666 {
1667 dREQ (REQ_DB_KEY_RANGE);
1668 req->db = db;
1669 req->txn = txn;
1670 sv_to_dbt (&req->dbt1, key);
1671 req->uint1 = flags;
1672 req->sv1 = SvREFCNT_inc (key_range); SvREADONLY_on (key_range);
1673 REQ_SEND;
1674 }
1675
1676 void
1677 db_put (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
1678 PREINIT:
1679 CALLBACK
1680 CODE:
1681 {
1682 dREQ (REQ_DB_PUT);
1683 req->db = db;
1684 req->txn = txn;
1685 sv_to_dbt (&req->dbt1, key);
1686 sv_to_dbt (&req->dbt2, data);
1687 req->uint1 = flags;
1688 REQ_SEND;
1689 }
1690
1691 void
1692 db_get (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
1693 PREINIT:
1694 CALLBACK
1695 CODE:
1696 if (SvREADONLY (data))
1697 croak ("can't modify read-only data scalar in db_get");
1698 {
1699 dREQ (REQ_DB_GET);
1700 req->db = db;
1701 req->txn = txn;
1702 req->uint1 = flags;
1703 sv_to_dbt (&req->dbt1, key);
1704 req->dbt3.flags = DB_DBT_MALLOC;
1705 req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
1706 REQ_SEND;
1707 }
1708
1709 void
1710 db_pget (DB *db, DB_TXN_ornull *txn, SV *key, SV *pkey, SV *data, U32 flags = 0, SV *callback = 0)
1711 PREINIT:
1712 CALLBACK
1713 CODE:
1714 if (SvREADONLY (data))
1715 croak ("can't modify read-only data scalar in db_pget");
1716 {
1717 dREQ (REQ_DB_PGET);
1718 req->db = db;
1719 req->txn = txn;
1720 req->uint1 = flags;
1721 sv_to_dbt (&req->dbt1, key);
1722 sv_to_dbt (&req->dbt2, pkey);
1723 req->dbt3.flags = DB_DBT_MALLOC;
1724 req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
1725 REQ_SEND;
1726 }
1727
1728 void
1729 db_del (DB *db, DB_TXN_ornull *txn, SV *key, U32 flags = 0, SV *callback = 0)
1730 PREINIT:
1731 CALLBACK
1732 CODE:
1733 {
1734 dREQ (REQ_DB_DEL);
1735 req->db = db;
1736 req->txn = txn;
1737 req->uint1 = flags;
1738 sv_to_dbt (&req->dbt1, key);
1739 REQ_SEND;
1740 }
1741
1742 void
1743 db_txn_commit (DB_TXN *txn, U32 flags = 0, SV *callback = 0)
1744 PREINIT:
1745 CALLBACK
1746 CODE:
1747 {
1748 dREQ (REQ_TXN_COMMIT);
1749 req->txn = txn;
1750 req->uint1 = flags;
1751 REQ_SEND;
1752 ptr_nuke (ST (0));
1753 }
1754
1755 void
1756 db_txn_abort (DB_TXN *txn, SV *callback = 0)
1757 PREINIT:
1758 CALLBACK
1759 CODE:
1760 {
1761 dREQ (REQ_TXN_ABORT);
1762 req->txn = txn;
1763 REQ_SEND;
1764 ptr_nuke (ST (0));
1765 }
1766
1767 void
1768 db_txn_finish (DB_TXN *txn, U32 flags = 0, SV *callback = 0)
1769 PREINIT:
1770 CALLBACK
1771 CODE:
1772 {
1773 dREQ (REQ_TXN_FINISH);
1774 req->txn = txn;
1775 req->uint1 = flags;
1776 REQ_SEND;
1777 ptr_nuke (ST (0));
1778 }
1779
1780 void
1781 db_c_close (DBC *dbc, SV *callback = 0)
1782 PREINIT:
1783 CALLBACK
1784 CODE:
1785 {
1786 dREQ (REQ_C_CLOSE);
1787 req->dbc = dbc;
1788 REQ_SEND;
1789 ptr_nuke (ST (0));
1790 }
1791
1792 void
1793 db_c_count (DBC *dbc, SV *count, U32 flags = 0, SV *callback = 0)
1794 PREINIT:
1795 CALLBACK
1796 CODE:
1797 {
1798 dREQ (REQ_C_COUNT);
1799 req->dbc = dbc;
1800 req->sv1 = SvREFCNT_inc (count);
1801 REQ_SEND;
1802 }
1803
1804 void
1805 db_c_put (DBC *dbc, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
1806 PREINIT:
1807 CALLBACK
1808 CODE:
1809 {
1810 dREQ (REQ_C_PUT);
1811 req->dbc = dbc;
1812 sv_to_dbt (&req->dbt1, key);
1813 sv_to_dbt (&req->dbt2, data);
1814 req->uint1 = flags;
1815 REQ_SEND;
1816 }
1817
1818 void
1819 db_c_get (DBC *dbc, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
1820 PREINIT:
1821 CALLBACK
1822 CODE:
1823 {
1824 dREQ (REQ_C_GET);
1825 req->dbc = dbc;
1826 req->uint1 = flags;
1827 if ((flags & DB_SET) == DB_SET
1828 || (flags & DB_SET_RANGE) == DB_SET_RANGE)
1829 sv_to_dbt (&req->dbt1, key);
1830 else
1831 req->dbt1.flags = DB_DBT_MALLOC;
1832
1833 req->sv1 = SvREFCNT_inc (key); SvREADONLY_on (key);
1834
1835 if ((flags & DB_GET_BOTH) == DB_GET_BOTH
1836 || (flags & DB_GET_BOTH_RANGE) == DB_GET_BOTH_RANGE)
1837 sv_to_dbt (&req->dbt3, data);
1838 else
1839 req->dbt3.flags = DB_DBT_MALLOC;
1840
1841 req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
1842 REQ_SEND;
1843 }
1844
1845 void
1846 db_c_pget (DBC *dbc, SV *key, SV *pkey, SV *data, U32 flags = 0, SV *callback = 0)
1847 PREINIT:
1848 CALLBACK
1849 CODE:
1850 {
1851 dREQ (REQ_C_PGET);
1852 req->dbc = dbc;
1853 req->uint1 = flags;
1854 if ((flags & DB_SET) == DB_SET
1855 || (flags & DB_SET_RANGE) == DB_SET_RANGE)
1856 sv_to_dbt (&req->dbt1, key);
1857 else
1858 req->dbt1.flags = DB_DBT_MALLOC;
1859
1860 req->sv1 = SvREFCNT_inc (key); SvREADONLY_on (key);
1861
1862 req->dbt2.flags = DB_DBT_MALLOC;
1863 req->sv2 = SvREFCNT_inc (pkey); SvREADONLY_on (pkey);
1864
1865 if ((flags & DB_GET_BOTH) == DB_GET_BOTH
1866 || (flags & DB_GET_BOTH_RANGE) == DB_GET_BOTH_RANGE)
1867 sv_to_dbt (&req->dbt3, data);
1868 else
1869 req->dbt3.flags = DB_DBT_MALLOC;
1870
1871 req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
1872 REQ_SEND;
1873 }
1874
1875 void
1876 db_c_del (DBC *dbc, U32 flags = 0, SV *callback = 0)
1877 PREINIT:
1878 CALLBACK
1879 CODE:
1880 {
1881 dREQ (REQ_C_DEL);
1882 req->dbc = dbc;
1883 req->uint1 = flags;
1884 REQ_SEND;
1885 }
1886
1887
1888 void
1889 db_sequence_open (DB_SEQUENCE *seq, DB_TXN_ornull *txnid, SV *key, U32 flags = 0, SV *callback = 0)
1890 PREINIT:
1891 CALLBACK
1892 CODE:
1893 {
1894 dREQ (REQ_SEQ_OPEN);
1895 req->seq = seq;
1896 req->txn = txnid;
1897 req->uint1 = flags | DB_THREAD;
1898 sv_to_dbt (&req->dbt1, key);
1899 REQ_SEND;
1900 }
1901
1902 void
1903 db_sequence_close (DB_SEQUENCE *seq, U32 flags = 0, SV *callback = 0)
1904 PREINIT:
1905 CALLBACK
1906 CODE:
1907 {
1908 dREQ (REQ_SEQ_CLOSE);
1909 req->seq = seq;
1910 req->uint1 = flags;
1911 REQ_SEND;
1912 ptr_nuke (ST (0));
1913 }
1914
1915 void
1916 db_sequence_get (DB_SEQUENCE *seq, DB_TXN_ornull *txnid, int delta, SV *seq_value, U32 flags = DB_TXN_NOSYNC, SV *callback = 0)
1917 PREINIT:
1918 CALLBACK
1919 CODE:
1920 {
1921 dREQ (REQ_SEQ_GET);
1922 req->seq = seq;
1923 req->txn = txnid;
1924 req->int1 = delta;
1925 req->uint1 = flags;
1926 req->sv1 = SvREFCNT_inc (seq_value); SvREADONLY_on (seq_value);
1927 REQ_SEND;
1928 }
1929
1930 void
1931 db_sequence_remove (DB_SEQUENCE *seq, DB_TXN_ornull *txnid = 0, U32 flags = 0, SV *callback = 0)
1932 PREINIT:
1933 CALLBACK
1934 CODE:
1935 {
1936 dREQ (REQ_SEQ_REMOVE);
1937 req->seq = seq;
1938 req->txn = txnid;
1939 req->uint1 = flags;
1940 REQ_SEND;
1941 }
1942
1943
1944 MODULE = BDB PACKAGE = BDB::Env
1945
1946 void
1947 DESTROY (DB_ENV_ornuked *env)
1948 CODE:
1949 if (env)
1950 env->close (env, 0);
1951
1952 int set_data_dir (DB_ENV *env, const char *dir)
1953 CODE:
1954 RETVAL = env->set_data_dir (env, dir);
1955 OUTPUT:
1956 RETVAL
1957
1958 int set_tmp_dir (DB_ENV *env, const char *dir)
1959 CODE:
1960 RETVAL = env->set_tmp_dir (env, dir);
1961 OUTPUT:
1962 RETVAL
1963
1964 int set_lg_dir (DB_ENV *env, const char *dir)
1965 CODE:
1966 RETVAL = env->set_lg_dir (env, dir);
1967 OUTPUT:
1968 RETVAL
1969
1970 int set_shm_key (DB_ENV *env, long shm_key)
1971 CODE:
1972 RETVAL = env->set_shm_key (env, shm_key);
1973 OUTPUT:
1974 RETVAL
1975
1976 int set_cachesize (DB_ENV *env, U32 gbytes, U32 bytes, int ncache = 0)
1977 CODE:
1978 RETVAL = env->set_cachesize (env, gbytes, bytes, ncache);
1979 OUTPUT:
1980 RETVAL
1981
1982 int set_flags (DB_ENV *env, U32 flags, int onoff = 1)
1983 CODE:
1984 RETVAL = env->set_flags (env, flags, onoff);
1985 OUTPUT:
1986 RETVAL
1987
1988 #if DB_VERSION_MINOR >= 7
1989
1990 int set_intermediate_dir_mode (DB_ENV *env, const char *mode)
1991 CODE:
1992 RETVAL = env->set_intermediate_dir_mode (env, mode);
1993 OUTPUT:
1994 RETVAL
1995
1996 int log_set_config (DB_ENV *env, U32 flags, int onoff = 1)
1997 CODE:
1998 RETVAL = env->log_set_config (env, flags, onoff);
1999 OUTPUT:
2000 RETVAL
2001
2002 #endif
2003
2004
2005 void set_errfile (DB_ENV *env, FILE *errfile = 0)
2006 CODE:
2007 env->set_errfile (env, errfile);
2008
2009 void set_msgfile (DB_ENV *env, FILE *msgfile = 0)
2010 CODE:
2011 env->set_msgfile (env, msgfile);
2012
2013 int set_verbose (DB_ENV *env, U32 which = -1, int onoff = 1)
2014 CODE:
2015 RETVAL = env->set_verbose (env, which, onoff);
2016 OUTPUT:
2017 RETVAL
2018
2019 int set_encrypt (DB_ENV *env, const char *password, U32 flags = 0)
2020 CODE:
2021 RETVAL = env->set_encrypt (env, password, flags);
2022 OUTPUT:
2023 RETVAL
2024
2025 int set_timeout (DB_ENV *env, NV timeout, U32 flags = DB_SET_TXN_TIMEOUT)
2026 CODE:
2027 RETVAL = env->set_timeout (env, timeout * 1000000, flags);
2028 OUTPUT:
2029 RETVAL
2030
2031 int set_mp_max_openfd (DB_ENV *env, int maxopenfd);
2032 CODE:
2033 RETVAL = env->set_mp_max_openfd (env, maxopenfd);
2034 OUTPUT:
2035 RETVAL
2036
2037 int set_mp_max_write (DB_ENV *env, int maxwrite, int maxwrite_sleep);
2038 CODE:
2039 RETVAL = env->set_mp_max_write (env, maxwrite, maxwrite_sleep);
2040 OUTPUT:
2041 RETVAL
2042
2043 int set_mp_mmapsize (DB_ENV *env, int mmapsize_mb)
2044 CODE:
2045 RETVAL = env->set_mp_mmapsize (env, ((size_t)mmapsize_mb) << 20);
2046 OUTPUT:
2047 RETVAL
2048
2049 int set_lk_detect (DB_ENV *env, U32 detect = DB_LOCK_DEFAULT)
2050 CODE:
2051 RETVAL = env->set_lk_detect (env, detect);
2052 OUTPUT:
2053 RETVAL
2054
2055 int set_lk_max_lockers (DB_ENV *env, U32 max)
2056 CODE:
2057 RETVAL = env->set_lk_max_lockers (env, max);
2058 OUTPUT:
2059 RETVAL
2060
2061 int set_lk_max_locks (DB_ENV *env, U32 max)
2062 CODE:
2063 RETVAL = env->set_lk_max_locks (env, max);
2064 OUTPUT:
2065 RETVAL
2066
2067 int set_lk_max_objects (DB_ENV *env, U32 max)
2068 CODE:
2069 RETVAL = env->set_lk_max_objects (env, max);
2070 OUTPUT:
2071 RETVAL
2072
2073 int set_lg_bsize (DB_ENV *env, U32 max)
2074 CODE:
2075 RETVAL = env->set_lg_bsize (env, max);
2076 OUTPUT:
2077 RETVAL
2078
2079 int set_lg_max (DB_ENV *env, U32 max)
2080 CODE:
2081 RETVAL = env->set_lg_max (env, max);
2082 OUTPUT:
2083 RETVAL
2084
2085 int mutex_set_max (DB_ENV *env, U32 max)
2086 CODE:
2087 RETVAL = env->mutex_set_max (env, max);
2088 OUTPUT:
2089 RETVAL
2090
2091 int mutex_set_increment (DB_ENV *env, U32 increment)
2092 CODE:
2093 RETVAL = env->mutex_set_increment (env, increment);
2094 OUTPUT:
2095 RETVAL
2096
2097 int mutex_set_tas_spins (DB_ENV *env, U32 tas_spins)
2098 CODE:
2099 RETVAL = env->mutex_set_tas_spins (env, tas_spins);
2100 OUTPUT:
2101 RETVAL
2102
2103 int mutex_set_align (DB_ENV *env, U32 align)
2104 CODE:
2105 RETVAL = env->mutex_set_align (env, align);
2106 OUTPUT:
2107 RETVAL
2108
2109 DB_TXN *
2110 txn_begin (DB_ENV *env, DB_TXN_ornull *parent = 0, U32 flags = 0)
2111 CODE:
2112 errno = env->txn_begin (env, parent, &RETVAL, flags);
2113 if (errno)
2114 croak ("DB_ENV->txn_begin: %s", db_strerror (errno));
2115 OUTPUT:
2116 RETVAL
2117
2118 MODULE = BDB PACKAGE = BDB::Db
2119
2120 void
2121 DESTROY (DB_ornuked *db)
2122 CODE:
2123 if (db)
2124 {
2125 SV *env = (SV *)db->app_private;
2126 db->close (db, 0);
2127 SvREFCNT_dec (env);
2128 }
2129
2130 int set_cachesize (DB *db, U32 gbytes, U32 bytes, int ncache = 0)
2131 CODE:
2132 RETVAL = db->set_cachesize (db, gbytes, bytes, ncache);
2133 OUTPUT:
2134 RETVAL
2135
2136 int set_flags (DB *db, U32 flags)
2137 CODE:
2138 RETVAL = db->set_flags (db, flags);
2139 OUTPUT:
2140 RETVAL
2141
2142 int set_encrypt (DB *db, const char *password, U32 flags)
2143 CODE:
2144 RETVAL = db->set_encrypt (db, password, flags);
2145 OUTPUT:
2146 RETVAL
2147
2148 int set_lorder (DB *db, int lorder)
2149 CODE:
2150 RETVAL = db->set_lorder (db, lorder);
2151 OUTPUT:
2152 RETVAL
2153
2154 int set_bt_minkey (DB *db, U32 minkey)
2155 CODE:
2156 RETVAL = db->set_bt_minkey (db, minkey);
2157 OUTPUT:
2158 RETVAL
2159
2160 int set_re_delim (DB *db, int delim)
2161 CODE:
2162 RETVAL = db->set_re_delim (db, delim);
2163 OUTPUT:
2164 RETVAL
2165
2166 int set_re_pad (DB *db, int re_pad)
2167 CODE:
2168 RETVAL = db->set_re_pad (db, re_pad);
2169 OUTPUT:
2170 RETVAL
2171
2172 int set_re_source (DB *db, char *source)
2173 CODE:
2174 RETVAL = db->set_re_source (db, source);
2175 OUTPUT:
2176 RETVAL
2177
2178 int set_re_len (DB *db, U32 re_len)
2179 CODE:
2180 RETVAL = db->set_re_len (db, re_len);
2181 OUTPUT:
2182 RETVAL
2183
2184 int set_h_ffactor (DB *db, U32 h_ffactor)
2185 CODE:
2186 RETVAL = db->set_h_ffactor (db, h_ffactor);
2187 OUTPUT:
2188 RETVAL
2189
2190 int set_h_nelem (DB *db, U32 h_nelem)
2191 CODE:
2192 RETVAL = db->set_h_nelem (db, h_nelem);
2193 OUTPUT:
2194 RETVAL
2195
2196 int set_q_extentsize (DB *db, U32 extentsize)
2197 CODE:
2198 RETVAL = db->set_q_extentsize (db, extentsize);
2199 OUTPUT:
2200 RETVAL
2201
2202 DBC *
2203 cursor (DB *db, DB_TXN_ornull *txn = 0, U32 flags = 0)
2204 CODE:
2205 errno = db->cursor (db, txn, &RETVAL, flags);
2206 if (errno)
2207 croak ("DB->cursor: %s", db_strerror (errno));
2208 OUTPUT:
2209 RETVAL
2210
2211 DB_SEQUENCE *
2212 sequence (DB *db, U32 flags = 0)
2213 CODE:
2214 {
2215 errno = db_sequence_create (&RETVAL, db, flags);
2216 if (errno)
2217 croak ("db_sequence_create: %s", db_strerror (errno));
2218 }
2219 OUTPUT:
2220 RETVAL
2221
2222
2223 MODULE = BDB PACKAGE = BDB::Txn
2224
2225 void
2226 DESTROY (DB_TXN_ornuked *txn)
2227 CODE:
2228 if (txn)
2229 txn->abort (txn);
2230
2231 int set_timeout (DB_TXN *txn, NV timeout, U32 flags = DB_SET_TXN_TIMEOUT)
2232 CODE:
2233 RETVAL = txn->set_timeout (txn, timeout * 1000000, flags);
2234 OUTPUT:
2235 RETVAL
2236
2237 int failed (DB_TXN *txn)
2238 CODE:
2239 RETVAL = !!(txn->flags & TXN_DEADLOCK);
2240 OUTPUT:
2241 RETVAL
2242
2243
2244 MODULE = BDB PACKAGE = BDB::Cursor
2245
2246 void
2247 DESTROY (DBC_ornuked *dbc)
2248 CODE:
2249 if (dbc)
2250 dbc->c_close (dbc);
2251
2252 #if DB_VERSION_MINOR >= 6
2253
2254 int set_priority (DBC *dbc, int priority)
2255 CODE:
2256 dbc->set_priority (dbc, priority);
2257
2258 #endif
2259
2260 MODULE = BDB PACKAGE = BDB::Sequence
2261
2262 void
2263 DESTROY (DB_SEQUENCE_ornuked *seq)
2264 CODE:
2265 if (seq)
2266 seq->close (seq, 0);
2267
2268 int initial_value (DB_SEQUENCE *seq, db_seq_t value)
2269 CODE:
2270 RETVAL = seq->initial_value (seq, value);
2271 OUTPUT:
2272 RETVAL
2273
2274 int set_cachesize (DB_SEQUENCE *seq, U32 size)
2275 CODE:
2276 RETVAL = seq->set_cachesize (seq, size);
2277 OUTPUT:
2278 RETVAL
2279
2280 int set_flags (DB_SEQUENCE *seq, U32 flags)
2281 CODE:
2282 RETVAL = seq->set_flags (seq, flags);
2283 OUTPUT:
2284 RETVAL
2285
2286 int set_range (DB_SEQUENCE *seq, db_seq_t min, db_seq_t max)
2287 CODE:
2288 RETVAL = seq->set_range (seq, min, max);
2289 OUTPUT:
2290 RETVAL
2291
2292