1 |
/* solaris */ |
2 |
#define _POSIX_PTHREAD_SEMANTICS 1 |
3 |
|
4 |
#if __linux && !defined(_GNU_SOURCE) |
5 |
# define _GNU_SOURCE |
6 |
#endif |
7 |
|
8 |
/* just in case */ |
9 |
#define _REENTRANT 1 |
10 |
|
11 |
#include <errno.h> |
12 |
|
13 |
#include "EXTERN.h" |
14 |
#include "perl.h" |
15 |
#include "XSUB.h" |
16 |
|
17 |
#include <pthread.h> |
18 |
|
19 |
#include <stddef.h> |
20 |
#include <stdlib.h> |
21 |
#include <errno.h> |
22 |
#include <sys/time.h> |
23 |
#include <sys/types.h> |
24 |
#include <limits.h> |
25 |
#include <unistd.h> |
26 |
#include <fcntl.h> |
27 |
|
28 |
#include <db.h> |
29 |
|
30 |
/* number of seconds after which idle threads exit */ |
31 |
#define IDLE_TIMEOUT 10 |
32 |
|
33 |
/* wether word reads are potentially non-atomic. |
34 |
* this is conservatice, likely most arches this runs |
35 |
* on have atomic word read/writes. |
36 |
*/ |
37 |
#ifndef WORDACCESS_UNSAFE |
38 |
# if __i386 || __x86_64 |
39 |
# define WORDACCESS_UNSAFE 0 |
40 |
# else |
41 |
# define WORDACCESS_UNSAFE 1 |
42 |
# endif |
43 |
#endif |
44 |
|
45 |
typedef SV SV8; /* byte-sv, used for argument-checking */ |
46 |
|
47 |
enum |
48 |
{ |
49 |
REQ_QUIT, |
50 |
REQ_ENV_OPEN, REQ_ENV_CLOSE, |
51 |
REQ_DB_OPEN, REQ_DB_CLOSE, |
52 |
}; |
53 |
|
54 |
typedef struct aio_cb |
55 |
{ |
56 |
struct aio_cb *volatile next; |
57 |
SV *callback; |
58 |
int type, pri, errorno; |
59 |
|
60 |
DB_ENV *env; |
61 |
DB *db; |
62 |
DB_TXN *txn; |
63 |
DBC *cursor; |
64 |
int int1, int2; |
65 |
U32 uint1, uint2; |
66 |
char *buf1, *buf2; |
67 |
} aio_cb; |
68 |
|
69 |
typedef aio_cb *aio_req; |
70 |
|
71 |
enum { |
72 |
PRI_MIN = -4, |
73 |
PRI_MAX = 4, |
74 |
|
75 |
DEFAULT_PRI = 0, |
76 |
PRI_BIAS = -PRI_MIN, |
77 |
NUM_PRI = PRI_MAX + PRI_BIAS + 1, |
78 |
}; |
79 |
|
80 |
#define AIO_TICKS ((1000000 + 1023) >> 10) |
81 |
|
82 |
static unsigned int max_poll_time = 0; |
83 |
static unsigned int max_poll_reqs = 0; |
84 |
|
85 |
/* calculcate time difference in ~1/AIO_TICKS of a second */ |
86 |
static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
87 |
{ |
88 |
return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS |
89 |
+ ((tv2->tv_usec - tv1->tv_usec) >> 10); |
90 |
} |
91 |
|
92 |
static int next_pri = DEFAULT_PRI + PRI_BIAS; |
93 |
|
94 |
static unsigned int started, idle, wanted; |
95 |
|
96 |
#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP) |
97 |
# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP |
98 |
#else |
99 |
# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER |
100 |
#endif |
101 |
|
102 |
#define LOCK(mutex) pthread_mutex_lock (&(mutex)) |
103 |
#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex)) |
104 |
|
105 |
/* worker threads management */ |
106 |
static pthread_mutex_t wrklock = AIO_MUTEX_INIT; |
107 |
|
108 |
typedef struct worker { |
109 |
/* locked by wrklock */ |
110 |
struct worker *prev, *next; |
111 |
|
112 |
pthread_t tid; |
113 |
|
114 |
/* locked by reslock, reqlock or wrklock */ |
115 |
aio_req req; /* currently processed request */ |
116 |
void *dbuf; |
117 |
DIR *dirp; |
118 |
} worker; |
119 |
|
120 |
static worker wrk_first = { &wrk_first, &wrk_first, 0 }; |
121 |
|
122 |
static void worker_clear (worker *wrk) |
123 |
{ |
124 |
} |
125 |
|
126 |
static void worker_free (worker *wrk) |
127 |
{ |
128 |
wrk->next->prev = wrk->prev; |
129 |
wrk->prev->next = wrk->next; |
130 |
|
131 |
free (wrk); |
132 |
} |
133 |
|
134 |
static volatile unsigned int nreqs, nready, npending; |
135 |
static volatile unsigned int max_idle = 4; |
136 |
static volatile unsigned int max_outstanding = 0xffffffff; |
137 |
static int respipe [2]; |
138 |
|
139 |
static pthread_mutex_t reslock = AIO_MUTEX_INIT; |
140 |
static pthread_mutex_t reqlock = AIO_MUTEX_INIT; |
141 |
static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER; |
142 |
|
143 |
#if WORDACCESS_UNSAFE |
144 |
|
145 |
static unsigned int get_nready () |
146 |
{ |
147 |
unsigned int retval; |
148 |
|
149 |
LOCK (reqlock); |
150 |
retval = nready; |
151 |
UNLOCK (reqlock); |
152 |
|
153 |
return retval; |
154 |
} |
155 |
|
156 |
static unsigned int get_npending () |
157 |
{ |
158 |
unsigned int retval; |
159 |
|
160 |
LOCK (reslock); |
161 |
retval = npending; |
162 |
UNLOCK (reslock); |
163 |
|
164 |
return retval; |
165 |
} |
166 |
|
167 |
static unsigned int get_nthreads () |
168 |
{ |
169 |
unsigned int retval; |
170 |
|
171 |
LOCK (wrklock); |
172 |
retval = started; |
173 |
UNLOCK (wrklock); |
174 |
|
175 |
return retval; |
176 |
} |
177 |
|
178 |
#else |
179 |
|
180 |
# define get_nready() nready |
181 |
# define get_npending() npending |
182 |
# define get_nthreads() started |
183 |
|
184 |
#endif |
185 |
|
186 |
/* |
187 |
* a somewhat faster data structure might be nice, but |
188 |
* with 8 priorities this actually needs <20 insns |
189 |
* per shift, the most expensive operation. |
190 |
*/ |
191 |
typedef struct { |
192 |
aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */ |
193 |
int size; |
194 |
} reqq; |
195 |
|
196 |
static reqq req_queue; |
197 |
static reqq res_queue; |
198 |
|
199 |
int reqq_push (reqq *q, aio_req req) |
200 |
{ |
201 |
int pri = req->pri; |
202 |
req->next = 0; |
203 |
|
204 |
if (q->qe[pri]) |
205 |
{ |
206 |
q->qe[pri]->next = req; |
207 |
q->qe[pri] = req; |
208 |
} |
209 |
else |
210 |
q->qe[pri] = q->qs[pri] = req; |
211 |
|
212 |
return q->size++; |
213 |
} |
214 |
|
215 |
aio_req reqq_shift (reqq *q) |
216 |
{ |
217 |
int pri; |
218 |
|
219 |
if (!q->size) |
220 |
return 0; |
221 |
|
222 |
--q->size; |
223 |
|
224 |
for (pri = NUM_PRI; pri--; ) |
225 |
{ |
226 |
aio_req req = q->qs[pri]; |
227 |
|
228 |
if (req) |
229 |
{ |
230 |
if (!(q->qs[pri] = req->next)) |
231 |
q->qe[pri] = 0; |
232 |
|
233 |
return req; |
234 |
} |
235 |
} |
236 |
|
237 |
abort (); |
238 |
} |
239 |
|
240 |
static int poll_cb (); |
241 |
static void req_free (aio_req req); |
242 |
static void req_cancel (aio_req req); |
243 |
|
244 |
static int req_invoke (aio_req req) |
245 |
{ |
246 |
dSP; |
247 |
|
248 |
if (SvOK (req->callback)) |
249 |
{ |
250 |
ENTER; |
251 |
SAVETMPS; |
252 |
PUSHMARK (SP); |
253 |
EXTEND (SP, 1); |
254 |
|
255 |
switch (req->type) |
256 |
{ |
257 |
} |
258 |
|
259 |
PUTBACK; |
260 |
call_sv (req->callback, G_VOID | G_EVAL); |
261 |
SPAGAIN; |
262 |
|
263 |
FREETMPS; |
264 |
LEAVE; |
265 |
} |
266 |
|
267 |
return !SvTRUE (ERRSV); |
268 |
} |
269 |
|
270 |
static void req_free (aio_req req) |
271 |
{ |
272 |
free (req->buf1); |
273 |
free (req->buf2); |
274 |
Safefree (req); |
275 |
} |
276 |
|
277 |
static void *aio_proc(void *arg); |
278 |
|
279 |
static void start_thread (void) |
280 |
{ |
281 |
sigset_t fullsigset, oldsigset; |
282 |
pthread_attr_t attr; |
283 |
|
284 |
worker *wrk = calloc (1, sizeof (worker)); |
285 |
|
286 |
if (!wrk) |
287 |
croak ("unable to allocate worker thread data"); |
288 |
|
289 |
pthread_attr_init (&attr); |
290 |
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED); |
291 |
#ifdef PTHREAD_SCOPE_PROCESS |
292 |
pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS); |
293 |
#endif |
294 |
|
295 |
sigfillset (&fullsigset); |
296 |
|
297 |
LOCK (wrklock); |
298 |
pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset); |
299 |
|
300 |
if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0) |
301 |
{ |
302 |
wrk->prev = &wrk_first; |
303 |
wrk->next = wrk_first.next; |
304 |
wrk_first.next->prev = wrk; |
305 |
wrk_first.next = wrk; |
306 |
++started; |
307 |
} |
308 |
else |
309 |
free (wrk); |
310 |
|
311 |
pthread_sigmask (SIG_SETMASK, &oldsigset, 0); |
312 |
UNLOCK (wrklock); |
313 |
} |
314 |
|
315 |
static void maybe_start_thread () |
316 |
{ |
317 |
if (get_nthreads () >= wanted) |
318 |
return; |
319 |
|
320 |
/* todo: maybe use idle here, but might be less exact */ |
321 |
if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs) |
322 |
return; |
323 |
|
324 |
start_thread (); |
325 |
} |
326 |
|
327 |
static void req_send (aio_req req) |
328 |
{ |
329 |
++nreqs; |
330 |
|
331 |
LOCK (reqlock); |
332 |
++nready; |
333 |
reqq_push (&req_queue, req); |
334 |
pthread_cond_signal (&reqwait); |
335 |
UNLOCK (reqlock); |
336 |
|
337 |
maybe_start_thread (); |
338 |
} |
339 |
|
340 |
static void end_thread (void) |
341 |
{ |
342 |
aio_req req; |
343 |
|
344 |
Newz (0, req, 1, aio_cb); |
345 |
|
346 |
req->type = REQ_QUIT; |
347 |
req->pri = PRI_MAX + PRI_BIAS; |
348 |
|
349 |
LOCK (reqlock); |
350 |
reqq_push (&req_queue, req); |
351 |
pthread_cond_signal (&reqwait); |
352 |
UNLOCK (reqlock); |
353 |
|
354 |
LOCK (wrklock); |
355 |
--started; |
356 |
UNLOCK (wrklock); |
357 |
} |
358 |
|
359 |
static void set_max_idle (int nthreads) |
360 |
{ |
361 |
if (WORDACCESS_UNSAFE) LOCK (reqlock); |
362 |
max_idle = nthreads <= 0 ? 1 : nthreads; |
363 |
if (WORDACCESS_UNSAFE) UNLOCK (reqlock); |
364 |
} |
365 |
|
366 |
static void min_parallel (int nthreads) |
367 |
{ |
368 |
if (wanted < nthreads) |
369 |
wanted = nthreads; |
370 |
} |
371 |
|
372 |
static void max_parallel (int nthreads) |
373 |
{ |
374 |
if (wanted > nthreads) |
375 |
wanted = nthreads; |
376 |
|
377 |
while (started > wanted) |
378 |
end_thread (); |
379 |
} |
380 |
|
381 |
static void poll_wait () |
382 |
{ |
383 |
fd_set rfd; |
384 |
|
385 |
while (nreqs) |
386 |
{ |
387 |
int size; |
388 |
if (WORDACCESS_UNSAFE) LOCK (reslock); |
389 |
size = res_queue.size; |
390 |
if (WORDACCESS_UNSAFE) UNLOCK (reslock); |
391 |
|
392 |
if (size) |
393 |
return; |
394 |
|
395 |
maybe_start_thread (); |
396 |
|
397 |
FD_ZERO(&rfd); |
398 |
FD_SET(respipe [0], &rfd); |
399 |
|
400 |
select (respipe [0] + 1, &rfd, 0, 0, 0); |
401 |
} |
402 |
} |
403 |
|
404 |
static int poll_cb () |
405 |
{ |
406 |
dSP; |
407 |
int count = 0; |
408 |
int maxreqs = max_poll_reqs; |
409 |
int do_croak = 0; |
410 |
struct timeval tv_start, tv_now; |
411 |
aio_req req; |
412 |
|
413 |
if (max_poll_time) |
414 |
gettimeofday (&tv_start, 0); |
415 |
|
416 |
for (;;) |
417 |
{ |
418 |
for (;;) |
419 |
{ |
420 |
maybe_start_thread (); |
421 |
|
422 |
LOCK (reslock); |
423 |
req = reqq_shift (&res_queue); |
424 |
|
425 |
if (req) |
426 |
{ |
427 |
--npending; |
428 |
|
429 |
if (!res_queue.size) |
430 |
{ |
431 |
/* read any signals sent by the worker threads */ |
432 |
char buf [4]; |
433 |
while (read (respipe [0], buf, 4) == 4) |
434 |
; |
435 |
} |
436 |
} |
437 |
|
438 |
UNLOCK (reslock); |
439 |
|
440 |
if (!req) |
441 |
break; |
442 |
|
443 |
--nreqs; |
444 |
|
445 |
if (!req_invoke (req)) |
446 |
{ |
447 |
req_free (req); |
448 |
croak (0); |
449 |
} |
450 |
|
451 |
count++; |
452 |
|
453 |
req_free (req); |
454 |
|
455 |
if (maxreqs && !--maxreqs) |
456 |
break; |
457 |
|
458 |
if (max_poll_time) |
459 |
{ |
460 |
gettimeofday (&tv_now, 0); |
461 |
|
462 |
if (tvdiff (&tv_start, &tv_now) >= max_poll_time) |
463 |
break; |
464 |
} |
465 |
} |
466 |
|
467 |
if (nreqs <= max_outstanding) |
468 |
break; |
469 |
|
470 |
poll_wait (); |
471 |
|
472 |
++maxreqs; |
473 |
} |
474 |
|
475 |
return count; |
476 |
} |
477 |
|
478 |
static void create_pipe () |
479 |
{ |
480 |
if (pipe (respipe)) |
481 |
croak ("unable to initialize result pipe"); |
482 |
|
483 |
if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)) |
484 |
croak ("cannot set result pipe to nonblocking mode"); |
485 |
|
486 |
if (fcntl (respipe [1], F_SETFL, O_NONBLOCK)) |
487 |
croak ("cannot set result pipe to nonblocking mode"); |
488 |
} |
489 |
|
490 |
/*****************************************************************************/ |
491 |
|
492 |
static void *aio_proc (void *thr_arg) |
493 |
{ |
494 |
aio_req req; |
495 |
struct timespec ts; |
496 |
worker *self = (worker *)thr_arg; |
497 |
|
498 |
/* try to distribute timeouts somewhat evenly */ |
499 |
ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL) |
500 |
* (1000000000UL / 1024UL); |
501 |
|
502 |
for (;;) |
503 |
{ |
504 |
ts.tv_sec = time (0) + IDLE_TIMEOUT; |
505 |
|
506 |
LOCK (reqlock); |
507 |
|
508 |
for (;;) |
509 |
{ |
510 |
self->req = req = reqq_shift (&req_queue); |
511 |
|
512 |
if (req) |
513 |
break; |
514 |
|
515 |
++idle; |
516 |
|
517 |
if (pthread_cond_timedwait (&reqwait, &reqlock, &ts) |
518 |
== ETIMEDOUT) |
519 |
{ |
520 |
if (idle > max_idle) |
521 |
{ |
522 |
--idle; |
523 |
UNLOCK (reqlock); |
524 |
LOCK (wrklock); |
525 |
--started; |
526 |
UNLOCK (wrklock); |
527 |
goto quit; |
528 |
} |
529 |
|
530 |
/* we are allowed to idle, so do so without any timeout */ |
531 |
pthread_cond_wait (&reqwait, &reqlock); |
532 |
ts.tv_sec = time (0) + IDLE_TIMEOUT; |
533 |
} |
534 |
|
535 |
--idle; |
536 |
} |
537 |
|
538 |
--nready; |
539 |
|
540 |
UNLOCK (reqlock); |
541 |
|
542 |
errno = 0; /* strictly unnecessary */ |
543 |
|
544 |
switch (req->type) |
545 |
{ |
546 |
case REQ_QUIT: |
547 |
goto quit; |
548 |
|
549 |
default: |
550 |
//req->result = ENOSYS; |
551 |
break; |
552 |
} |
553 |
|
554 |
//req->errorno = errno; |
555 |
|
556 |
LOCK (reslock); |
557 |
|
558 |
++npending; |
559 |
|
560 |
if (!reqq_push (&res_queue, req)) |
561 |
/* write a dummy byte to the pipe so fh becomes ready */ |
562 |
write (respipe [1], &respipe, 1); |
563 |
|
564 |
self->req = 0; |
565 |
worker_clear (self); |
566 |
|
567 |
UNLOCK (reslock); |
568 |
} |
569 |
|
570 |
quit: |
571 |
LOCK (wrklock); |
572 |
worker_free (self); |
573 |
UNLOCK (wrklock); |
574 |
|
575 |
return 0; |
576 |
} |
577 |
|
578 |
/*****************************************************************************/ |
579 |
|
580 |
static void atfork_prepare (void) |
581 |
{ |
582 |
LOCK (wrklock); |
583 |
LOCK (reqlock); |
584 |
LOCK (reslock); |
585 |
} |
586 |
|
587 |
static void atfork_parent (void) |
588 |
{ |
589 |
UNLOCK (reslock); |
590 |
UNLOCK (reqlock); |
591 |
UNLOCK (wrklock); |
592 |
} |
593 |
|
594 |
static void atfork_child (void) |
595 |
{ |
596 |
aio_req prv; |
597 |
|
598 |
while (prv = reqq_shift (&req_queue)) |
599 |
req_free (prv); |
600 |
|
601 |
while (prv = reqq_shift (&res_queue)) |
602 |
req_free (prv); |
603 |
|
604 |
while (wrk_first.next != &wrk_first) |
605 |
{ |
606 |
worker *wrk = wrk_first.next; |
607 |
|
608 |
if (wrk->req) |
609 |
req_free (wrk->req); |
610 |
|
611 |
worker_clear (wrk); |
612 |
worker_free (wrk); |
613 |
} |
614 |
|
615 |
started = 0; |
616 |
idle = 0; |
617 |
nreqs = 0; |
618 |
nready = 0; |
619 |
npending = 0; |
620 |
|
621 |
close (respipe [0]); |
622 |
close (respipe [1]); |
623 |
create_pipe (); |
624 |
|
625 |
atfork_parent (); |
626 |
} |
627 |
|
628 |
#define dREQ(reqtype) \ |
629 |
aio_req req; \ |
630 |
int req_pri = next_pri; \ |
631 |
next_pri = DEFAULT_PRI + PRI_BIAS; \ |
632 |
\ |
633 |
if (SvOK (callback) && !SvROK (callback)) \ |
634 |
croak ("callback must be undef or of reference type"); \ |
635 |
\ |
636 |
Newz (0, req, 1, aio_cb); \ |
637 |
if (!req) \ |
638 |
croak ("out of memory during aio_req allocation"); \ |
639 |
\ |
640 |
req->callback = newSVsv (callback); \ |
641 |
req->type = (reqtype); \ |
642 |
req->pri = req_pri |
643 |
|
644 |
#define REQ_SEND \ |
645 |
req_send (req) |
646 |
|
647 |
#define SvPTR(var, arg, type, class) \ |
648 |
if (!SvOK (arg)) \ |
649 |
(var) = 0; \ |
650 |
else if (sv_derived_from ((arg), # class)) \ |
651 |
{ \ |
652 |
IV tmp = SvIV ((SV*) SvRV (arg)); \ |
653 |
(var) = INT2PTR (type, tmp); \ |
654 |
} \ |
655 |
else \ |
656 |
Perl_croak (# var " is not of type " # type) |
657 |
|
658 |
MODULE = BDB PACKAGE = BDB |
659 |
|
660 |
PROTOTYPES: ENABLE |
661 |
|
662 |
BOOT: |
663 |
{ |
664 |
HV *stash = gv_stashpv ("BDB", 1); |
665 |
|
666 |
static const struct { |
667 |
const char *name; |
668 |
IV iv; |
669 |
} *civ, const_iv[] = { |
670 |
#define const_iv(name) { # name, (IV)DB_ ## name }, |
671 |
const_iv (RPCCLIENT) |
672 |
const_iv (INIT_CDB) |
673 |
const_iv (INIT_LOCK) |
674 |
const_iv (INIT_LOG) |
675 |
const_iv (INIT_MPOOL) |
676 |
const_iv (INIT_REP) |
677 |
const_iv (INIT_TXN) |
678 |
const_iv (RECOVER) |
679 |
const_iv (INIT_TXN) |
680 |
const_iv (RECOVER_FATAL) |
681 |
const_iv (CREATE) |
682 |
const_iv (USE_ENVIRON) |
683 |
const_iv (USE_ENVIRON_ROOT) |
684 |
const_iv (LOCKDOWN) |
685 |
const_iv (PRIVATE) |
686 |
const_iv (REGISTER) |
687 |
const_iv (SYSTEM_MEM) |
688 |
const_iv (AUTO_COMMIT) |
689 |
const_iv (CDB_ALLDB) |
690 |
const_iv (DIRECT_DB) |
691 |
const_iv (DIRECT_LOG) |
692 |
const_iv (DSYNC_DB) |
693 |
const_iv (DSYNC_LOG) |
694 |
const_iv (LOG_AUTOREMOVE) |
695 |
const_iv (LOG_INMEMORY) |
696 |
const_iv (NOLOCKING) |
697 |
const_iv (MULTIVERSION) |
698 |
const_iv (NOMMAP) |
699 |
const_iv (NOPANIC) |
700 |
const_iv (OVERWRITE) |
701 |
const_iv (PANIC_ENVIRONMENT) |
702 |
const_iv (REGION_INIT) |
703 |
const_iv (TIME_NOTGRANTED) |
704 |
const_iv (TXN_NOSYNC) |
705 |
const_iv (TXN_SNAPSHOT) |
706 |
const_iv (TXN_WRITE_NOSYNC) |
707 |
const_iv (YIELDCPU) |
708 |
const_iv (ENCRYPT_AES) |
709 |
const_iv (XA_CREATE) |
710 |
const_iv (BTREE) |
711 |
const_iv (HASH) |
712 |
const_iv (QUEUE) |
713 |
const_iv (RECNO) |
714 |
const_iv (UNKNOWN) |
715 |
const_iv (EXCL) |
716 |
const_iv (READ_UNCOMMITTED) |
717 |
const_iv (TRUNCATE) |
718 |
const_iv (NOSYNC) |
719 |
const_iv (CHKSUM) |
720 |
const_iv (ENCRYPT) |
721 |
const_iv (TXN_NOT_DURABLE) |
722 |
const_iv (DUP) |
723 |
const_iv (DUPSORT) |
724 |
const_iv (RECNUM) |
725 |
const_iv (RENUMBER) |
726 |
const_iv (REVSPLITOFF) |
727 |
const_iv (INORDER) |
728 |
const_iv (CONSUME) |
729 |
const_iv (CONSUME_WAIT) |
730 |
const_iv (SNAPSHOT) |
731 |
const_iv (JOIN_ITEM) |
732 |
const_iv (RMW) |
733 |
|
734 |
const_iv (NOTFOUND) |
735 |
const_iv (KEYEMPTY) |
736 |
const_iv (LOCK_DEADLOCK) |
737 |
const_iv (LOCK_NOTGRANTED) |
738 |
const_iv (RUNRECOVERY) |
739 |
}; |
740 |
|
741 |
for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; ) |
742 |
newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv)); |
743 |
|
744 |
create_pipe (); |
745 |
pthread_atfork (atfork_prepare, atfork_parent, atfork_child); |
746 |
} |
747 |
|
748 |
void |
749 |
max_poll_reqs (int nreqs) |
750 |
PROTOTYPE: $ |
751 |
CODE: |
752 |
max_poll_reqs = nreqs; |
753 |
|
754 |
void |
755 |
max_poll_time (double nseconds) |
756 |
PROTOTYPE: $ |
757 |
CODE: |
758 |
max_poll_time = nseconds * AIO_TICKS; |
759 |
|
760 |
void |
761 |
min_parallel (int nthreads) |
762 |
PROTOTYPE: $ |
763 |
|
764 |
void |
765 |
max_parallel (int nthreads) |
766 |
PROTOTYPE: $ |
767 |
|
768 |
void |
769 |
max_idle (int nthreads) |
770 |
PROTOTYPE: $ |
771 |
CODE: |
772 |
set_max_idle (nthreads); |
773 |
|
774 |
int |
775 |
max_outstanding (int maxreqs) |
776 |
PROTOTYPE: $ |
777 |
CODE: |
778 |
RETVAL = max_outstanding; |
779 |
max_outstanding = maxreqs; |
780 |
OUTPUT: |
781 |
RETVAL |
782 |
|
783 |
int |
784 |
bdbreq_pri (int pri = 0) |
785 |
PROTOTYPE: ;$ |
786 |
CODE: |
787 |
RETVAL = next_pri - PRI_BIAS; |
788 |
if (items > 0) |
789 |
{ |
790 |
if (pri < PRI_MIN) pri = PRI_MIN; |
791 |
if (pri > PRI_MAX) pri = PRI_MAX; |
792 |
next_pri = pri + PRI_BIAS; |
793 |
} |
794 |
OUTPUT: |
795 |
RETVAL |
796 |
|
797 |
void |
798 |
bdbreq_nice (int nice = 0) |
799 |
CODE: |
800 |
nice = next_pri - nice; |
801 |
if (nice < PRI_MIN) nice = PRI_MIN; |
802 |
if (nice > PRI_MAX) nice = PRI_MAX; |
803 |
next_pri = nice + PRI_BIAS; |
804 |
|
805 |
void |
806 |
flush () |
807 |
PROTOTYPE: |
808 |
CODE: |
809 |
while (nreqs) |
810 |
{ |
811 |
poll_wait (); |
812 |
poll_cb (); |
813 |
} |
814 |
|
815 |
int |
816 |
poll() |
817 |
PROTOTYPE: |
818 |
CODE: |
819 |
poll_wait (); |
820 |
RETVAL = poll_cb (); |
821 |
OUTPUT: |
822 |
RETVAL |
823 |
|
824 |
int |
825 |
poll_fileno() |
826 |
PROTOTYPE: |
827 |
CODE: |
828 |
RETVAL = respipe [0]; |
829 |
OUTPUT: |
830 |
RETVAL |
831 |
|
832 |
int |
833 |
poll_cb(...) |
834 |
PROTOTYPE: |
835 |
CODE: |
836 |
RETVAL = poll_cb (); |
837 |
OUTPUT: |
838 |
RETVAL |
839 |
|
840 |
void |
841 |
poll_wait() |
842 |
PROTOTYPE: |
843 |
CODE: |
844 |
poll_wait (); |
845 |
|
846 |
int |
847 |
nreqs() |
848 |
PROTOTYPE: |
849 |
CODE: |
850 |
RETVAL = nreqs; |
851 |
OUTPUT: |
852 |
RETVAL |
853 |
|
854 |
int |
855 |
nready() |
856 |
PROTOTYPE: |
857 |
CODE: |
858 |
RETVAL = get_nready (); |
859 |
OUTPUT: |
860 |
RETVAL |
861 |
|
862 |
int |
863 |
npending() |
864 |
PROTOTYPE: |
865 |
CODE: |
866 |
RETVAL = get_npending (); |
867 |
OUTPUT: |
868 |
RETVAL |
869 |
|
870 |
int |
871 |
nthreads() |
872 |
PROTOTYPE: |
873 |
CODE: |
874 |
if (WORDACCESS_UNSAFE) LOCK (wrklock); |
875 |
RETVAL = started; |
876 |
if (WORDACCESS_UNSAFE) UNLOCK (wrklock); |
877 |
OUTPUT: |
878 |
RETVAL |
879 |
|
880 |
DB_ENV * |
881 |
bdb_env_create (U32 env_flags = 0) |
882 |
CODE: |
883 |
{ |
884 |
int err = db_env_create (&RETVAL, env_flags); |
885 |
if (err) |
886 |
croak ("db_env_create: %s", db_strerror (err)); |
887 |
} |
888 |
|
889 |
void |
890 |
bdb_env_open (DB_ENV *env, char *db_home, U32 open_flags, int mode, SV *callback = 0) |
891 |
CODE: |
892 |
{ |
893 |
dREQ (REQ_ENV_OPEN); |
894 |
req->env = env; |
895 |
req->uint1 = open_flags; |
896 |
req->int1 = mode; |
897 |
req->buf1 = strdup (db_home); |
898 |
REQ_SEND; |
899 |
} |
900 |
|
901 |
void |
902 |
bdb_env_close (DB_ENV *env, U32 flags = 0, SV *callback = 0) |
903 |
CODE: |
904 |
{ |
905 |
dREQ (REQ_ENV_CLOSE); |
906 |
req->env = env; |
907 |
req->uint1 = flags; |
908 |
REQ_SEND; |
909 |
} |
910 |
|
911 |
DB * |
912 |
bdb_db_create (DB_ENV *env = 0, U32 flags = 0) |
913 |
CODE: |
914 |
{ |
915 |
int err = db_create (&RETVAL, env, flags); |
916 |
if (err) |
917 |
croak ("db_env_create: %s", db_strerror (err)); |
918 |
} |
919 |
|
920 |
void |
921 |
bdb_db_open (DB *db, DB_TXN *txnid, const char *file, const char *database, int type, U32 flags, int mode, SV *callback = 0) |
922 |
CODE: |
923 |
{ |
924 |
dREQ (REQ_DB_OPEN); |
925 |
req->db = db; |
926 |
req->txn = txnid; |
927 |
req->buf1 = strdup (file); |
928 |
req->buf2 = strdup (database); |
929 |
req->int1 = type; |
930 |
req->uint1 = flags; |
931 |
req->int2 = mode; |
932 |
REQ_SEND; |
933 |
} |
934 |
|
935 |
void |
936 |
bdb_db_close (DB *db, U32 flags = 0, SV *callback = 0) |
937 |
CODE: |
938 |
{ |
939 |
dREQ (REQ_DB_CLOSE); |
940 |
req->db = db; |
941 |
req->uint1 = flags; |
942 |
REQ_SEND; |
943 |
} |
944 |
|
945 |
|
946 |
MODULE = BDB PACKAGE = BDB::Env |
947 |
|
948 |
int set_cachesize (DB_ENV *env, U32 gbytes, U32 bytes, int ncache = 0) |
949 |
|
950 |
int set_flags (DB_ENV *env, U32 flags, int onoff) |
951 |
|
952 |
int set_encrypt (DB_ENV *env, const char *password, U32 flags) |
953 |
|
954 |
MODULE = BDB PACKAGE = BDB::Db |
955 |
|
956 |
int set_cachesize (DB *db, U32 gbytes, U32 bytes, int ncache = 0) |
957 |
|
958 |
int set_flags (DB *env, U32 flags, int onoff) |
959 |
|
960 |
int set_encrypt (DB *db, const char *password, U32 flags) |
961 |
|
962 |
int set_lorder (DB *db, int lorder) |
963 |
|
964 |
|
965 |
int set_bt_minkey (DB *db, U32 minkey) |
966 |
|
967 |
int set_re_delim(DB *db, int delim); |
968 |
|
969 |
int set_re_pad (DB *db, int re_pad) |
970 |
|
971 |
int set_re_source (DB *db, char *source) |
972 |
|
973 |
int set_re_len (DB *db, U32 re_len) |
974 |
|
975 |
int set_h_ffactor (DB *db, U32 h_ffactor) |
976 |
|
977 |
int set_h_nelem (DB *db, U32 h_nelem) |
978 |
|
979 |
int set_q_extentsize (DB *db, U32 extentsize) |
980 |
|
981 |
|