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Comparing BDB/BDB.xs (file contents):
Revision 1.1 by root, Mon Feb 5 18:40:55 2007 UTC vs.
Revision 1.14 by root, Sun Jul 8 13:41:03 2007 UTC

1	/* solaris */	1	#include "xthread.h"
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		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include <pthread.h>	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
18		17
19	#include <stddef.h>	18	#include <stddef.h>
20	#include <stdlib.h>	19	#include <stdlib.h>
21	#include <errno.h>	20	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	21	#include <sys/types.h>
25	#include <sys/stat.h>
26	#include <limits.h>	22	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	23	#include <fcntl.h>
29	#include <signal.h>	24
		25	#ifndef _WIN32
		26	# include <sys/time.h>
		27	# include <unistd.h>
		28	#endif
		29
30	#include <sched.h>	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
31		35
32	/* number of seconds after which idle threads exit */	36	/* number of seconds after which idle threads exit */
33	#define IDLE_TIMEOUT 10	37	#define IDLE_TIMEOUT 10
34		38
35	/* wether word reads are potentially non-atomic.	39	typedef DB_ENV DB_ENV_ornull;
36	* this is conservatice, likely most arches this runs	40	typedef DB_TXN DB_TXN_ornull;
37	* on have atomic word read/writes.	41	typedef DBC DBC_ornull;
38	*/	42	typedef DB DB_ornull;
39	#ifndef WORDACCESS_UNSAFE	43	typedef DB_SEQUENCE DB_SEQUENCE_ornull;
40	# if __i386 || __x86_64
41	# define WORDACCESS_UNSAFE 0
42	# else
43	# define WORDACCESS_UNSAFE 1
44	# endif
45	#endif
46		44
47	typedef SV SV8; /* byte-sv, used for argument-checking */	45	typedef SV SV8; /* byte-sv, used for argument-checking */
		46	typedef char *octetstring;
48		47
		48	static SV *prepare_cb;
		49
		50	static void
		51	debug_errcall (const DB_ENV *dbenv, const char *errpfx, const char *msg)
		52	{
		53	printf ("err[%s]\n", msg);
		54	}
		55
		56	static void
		57	debug_msgcall (const DB_ENV *dbenv, const char *msg)
		58	{
		59	printf ("msg[%s]\n", msg);
		60	}
		61
		62	static char *
		63	strdup_ornull (const char *s)
		64	{
		65	return s ? strdup (s) : 0;
		66	}
		67
		68	static void
		69	sv_to_dbt (DBT *dbt, SV *sv)
		70	{
		71	STRLEN len;
		72	char *data = SvPVbyte (sv, len);
		73
		74	dbt->data = malloc (len);
		75	memcpy (dbt->data, data, len);
		76	dbt->size = len;
		77	dbt->flags = DB_DBT_REALLOC;
		78	}
		79
		80	static void
		81	dbt_to_sv (SV *sv, DBT *dbt)
		82	{
		83	if (sv)
		84	{
		85	SvREADONLY_off (sv);
		86	sv_setpvn_mg (sv, dbt->data, dbt->size);
		87	SvREFCNT_dec (sv);
		88	}
		89
		90	free (dbt->data);
		91	}
		92
49	enum {	93	enum {
50	REQ_QUIT,	94	REQ_QUIT,
		95	REQ_ENV_OPEN, REQ_ENV_CLOSE, REQ_ENV_TXN_CHECKPOINT, REQ_ENV_LOCK_DETECT,
		96	REQ_ENV_MEMP_SYNC, REQ_ENV_MEMP_TRICKLE,
		97	REQ_DB_OPEN, REQ_DB_CLOSE, REQ_DB_COMPACT, REQ_DB_SYNC,
		98	REQ_DB_PUT, REQ_DB_GET, REQ_DB_PGET, REQ_DB_DEL, REQ_DB_KEY_RANGE,
		99	REQ_TXN_COMMIT, REQ_TXN_ABORT,
		100	REQ_C_CLOSE, REQ_C_COUNT, REQ_C_PUT, REQ_C_GET, REQ_C_PGET, REQ_C_DEL,
		101	REQ_SEQ_OPEN, REQ_SEQ_CLOSE, REQ_SEQ_GET, REQ_SEQ_REMOVE,
51	};	102	};
52		103
53	#define AIO_CB \
54	struct aio_cb *volatile next; \
55	SV *callback; \
56	int type, pri
57
58	typedef struct aio_cb	104	typedef struct aio_cb
59	{	105	{
60	AIO_CB;	106	struct aio_cb *volatile next;
		107	SV *callback;
		108	int type, pri, result;
		109
		110	DB_ENV *env;
		111	DB *db;
		112	DB_TXN *txn;
		113	DBC *dbc;
		114
		115	UV uv1;
		116	int int1, int2;
		117	U32 uint1, uint2;
		118	char *buf1, *buf2;
		119	SV *sv1, *sv2, *sv3;
		120
		121	DBT dbt1, dbt2, dbt3;
		122	DB_KEY_RANGE key_range;
		123	DB_SEQUENCE *seq;
		124	db_seq_t seq_t;
61	} aio_cb;	125	} aio_cb;
62		126
63	typedef aio_cb *aio_req;	127	typedef aio_cb *aio_req;
64		128
65	enum {	129	enum {
…		…
85		149
86	static int next_pri = DEFAULT_PRI + PRI_BIAS;	150	static int next_pri = DEFAULT_PRI + PRI_BIAS;
87		151
88	static unsigned int started, idle, wanted;	152	static unsigned int started, idle, wanted;
89		153
90	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
91	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
92	#else
93	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
94	#endif
95
96	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
97	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
98
99	/* worker threads management */	154	/* worker threads management */
100	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	155	static mutex_t wrklock = X_MUTEX_INIT;
101		156
102	typedef struct worker {	157	typedef struct worker {
103	/* locked by wrklock */	158	/* locked by wrklock */
104	struct worker *prev, *next;	159	struct worker *prev, *next;
105		160
106	pthread_t tid;	161	thread_t tid;
107		162
108	/* locked by reslock, reqlock or wrklock */	163	/* locked by reslock, reqlock or wrklock */
109	aio_req req; /* currently processed request */	164	aio_req req; /* currently processed request */
110	void *dbuf;	165	void *dbuf;
111	DIR *dirp;	166	DIR *dirp;
…		…
126	}	181	}
127		182
128	static volatile unsigned int nreqs, nready, npending;	183	static volatile unsigned int nreqs, nready, npending;
129	static volatile unsigned int max_idle = 4;	184	static volatile unsigned int max_idle = 4;
130	static volatile unsigned int max_outstanding = 0xffffffff;	185	static volatile unsigned int max_outstanding = 0xffffffff;
131	static int respipe [2];	186	static int respipe [2], respipe_osf [2];
132		187
133	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	188	static mutex_t reslock = X_MUTEX_INIT;
134	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	189	static mutex_t reqlock = X_MUTEX_INIT;
135	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	190	static cond_t reqwait = X_COND_INIT;
136		191
137	#if WORDACCESS_UNSAFE	192	#if WORDACCESS_UNSAFE
138		193
139	static unsigned int get_nready ()	194	static unsigned int get_nready ()
140	{	195	{
141	unsigned int retval;	196	unsigned int retval;
142		197
143	LOCK (reqlock);	198	X_LOCK (reqlock);
144	retval = nready;	199	retval = nready;
145	UNLOCK (reqlock);	200	X_UNLOCK (reqlock);
146		201
147	return retval;	202	return retval;
148	}	203	}
149		204
150	static unsigned int get_npending ()	205	static unsigned int get_npending ()
151	{	206	{
152	unsigned int retval;	207	unsigned int retval;
153		208
154	LOCK (reslock);	209	X_LOCK (reslock);
155	retval = npending;	210	retval = npending;
156	UNLOCK (reslock);	211	X_UNLOCK (reslock);
157		212
158	return retval;	213	return retval;
159	}	214	}
160		215
161	static unsigned int get_nthreads ()	216	static unsigned int get_nthreads ()
162	{	217	{
163	unsigned int retval;	218	unsigned int retval;
164		219
165	LOCK (wrklock);	220	X_LOCK (wrklock);
166	retval = started;	221	retval = started;
167	UNLOCK (wrklock);	222	X_UNLOCK (wrklock);
168		223
169	return retval;	224	return retval;
170	}	225	}
171		226
172	#else	227	#else
…		…
230		285
231	abort ();	286	abort ();
232	}	287	}
233		288
234	static int poll_cb ();	289	static int poll_cb ();
235	static int req_invoke (aio_req req);
236	static void req_free (aio_req req);	290	static void req_free (aio_req req);
237	static void req_cancel (aio_req req);	291	static void req_cancel (aio_req req);
238		292
239	static int req_invoke (aio_req req)	293	static int req_invoke (aio_req req)
240	{	294	{
…		…
243	if (SvOK (req->callback))	297	if (SvOK (req->callback))
244	{	298	{
245	ENTER;	299	ENTER;
246	SAVETMPS;	300	SAVETMPS;
247	PUSHMARK (SP);	301	PUSHMARK (SP);
248	EXTEND (SP, 1);
249		302
250	switch (req->type)	303	switch (req->type)
251	{	304	{
		305	case REQ_DB_CLOSE:
		306	SvREFCNT_dec (req->sv1);
		307	break;
		308
		309	case REQ_DB_GET:
		310	case REQ_DB_PGET:
		311	dbt_to_sv (req->sv3, &req->dbt3);
		312	break;
		313
		314	case REQ_C_GET:
		315	case REQ_C_PGET:
		316	dbt_to_sv (req->sv1, &req->dbt1);
		317	dbt_to_sv (req->sv2, &req->dbt2);
		318	dbt_to_sv (req->sv3, &req->dbt3);
		319	break;
		320
		321	case REQ_DB_KEY_RANGE:
		322	{
		323	AV *av = newAV ();
		324
		325	av_push (av, newSVnv (req->key_range.less));
		326	av_push (av, newSVnv (req->key_range.equal));
		327	av_push (av, newSVnv (req->key_range.greater));
		328
		329	SvREADONLY_off (req->sv1);
		330	sv_setsv_mg (req->sv1, newRV_noinc ((SV *)av));
		331	SvREFCNT_dec (req->sv1);
		332	}
		333	break;
		334
		335	case REQ_SEQ_GET:
		336	SvREADONLY_off (req->sv1);
		337
		338	if (sizeof (IV) > 4)
		339	sv_setiv_mg (req->sv1, req->seq_t);
		340	else
		341	sv_setnv_mg (req->sv1, req->seq_t);
		342
		343	SvREFCNT_dec (req->sv1);
		344	break;
252	}	345	}
		346
		347	errno = req->result;
253		348
254	PUTBACK;	349	PUTBACK;
255	call_sv (req->callback, G_VOID | G_EVAL);	350	call_sv (req->callback, G_VOID | G_EVAL);
256	SPAGAIN;	351	SPAGAIN;
257		352
…		…
262	return !SvTRUE (ERRSV);	357	return !SvTRUE (ERRSV);
263	}	358	}
264		359
265	static void req_free (aio_req req)	360	static void req_free (aio_req req)
266	{	361	{
		362	free (req->buf1);
		363	free (req->buf2);
267	Safefree (req);	364	Safefree (req);
268	}	365	}
269		366
270	static void *aio_proc(void *arg);	367	#ifdef USE_SOCKETS_AS_HANDLES
		368	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		369	#else
		370	# define TO_SOCKET(x) (x)
		371	#endif
		372
		373	static void
		374	create_pipe (int fd[2])
		375	{
		376	#ifdef _WIN32
		377	int arg = 1;
		378	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, fd)
		379	|| ioctlsocket (TO_SOCKET (fd [0]), FIONBIO, &arg)
		380	|| ioctlsocket (TO_SOCKET (fd [1]), FIONBIO, &arg))
		381	#else
		382	if (pipe (fd)
		383	|| fcntl (fd [0], F_SETFL, O_NONBLOCK)
		384	|| fcntl (fd [1], F_SETFL, O_NONBLOCK))
		385	#endif
		386	croak ("unable to initialize result pipe");
		387
		388	respipe_osf [0] = TO_SOCKET (respipe [0]);
		389	respipe_osf [1] = TO_SOCKET (respipe [1]);
		390	}
		391
		392	X_THREAD_PROC (bdb_proc);
271		393
272	static void start_thread (void)	394	static void start_thread (void)
273	{	395	{
274	sigset_t fullsigset, oldsigset;
275	pthread_attr_t attr;
276
277	worker *wrk = calloc (1, sizeof (worker));	396	worker *wrk = calloc (1, sizeof (worker));
278		397
279	if (!wrk)	398	if (!wrk)
280	croak ("unable to allocate worker thread data");	399	croak ("unable to allocate worker thread data");
281		400
282	pthread_attr_init (&attr);
283	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
284	#ifdef PTHREAD_SCOPE_PROCESS
285	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
286	#endif
287
288	sigfillset (&fullsigset);
289
290	LOCK (wrklock);	401	X_LOCK (wrklock);
291	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
292
293	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	402	if (thread_create (&wrk->tid, bdb_proc, (void *)wrk))
294	{	403	{
295	wrk->prev = &wrk_first;	404	wrk->prev = &wrk_first;
296	wrk->next = wrk_first.next;	405	wrk->next = wrk_first.next;
297	wrk_first.next->prev = wrk;	406	wrk_first.next->prev = wrk;
298	wrk_first.next = wrk;	407	wrk_first.next = wrk;
299	++started;	408	++started;
300	}	409	}
301	else	410	else
302	free (wrk);	411	free (wrk);
303		412
304	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
305	UNLOCK (wrklock);	413	X_UNLOCK (wrklock);
306	}	414	}
307		415
308	static void maybe_start_thread ()	416	static void maybe_start_thread ()
309	{	417	{
310	if (get_nthreads () >= wanted)	418	if (get_nthreads () >= wanted)
…		…
317	start_thread ();	425	start_thread ();
318	}	426	}
319		427
320	static void req_send (aio_req req)	428	static void req_send (aio_req req)
321	{	429	{
		430	SV *wait_callback = 0;
		431
		432	// synthesize callback if none given
		433	if (!SvOK (req->callback))
		434	{
		435	int count;
		436
		437	dSP;
		438	PUSHMARK (SP);
		439	PUTBACK;
		440	count = call_sv (prepare_cb, G_ARRAY);
		441	SPAGAIN;
		442
		443	if (count != 2)
		444	croak ("prepare callback must return exactly two values\n");
		445
		446	wait_callback = SvREFCNT_inc (POPs);
		447	SvREFCNT_dec (req->callback);
		448	req->callback = SvREFCNT_inc (POPs);
		449	}
		450
322	++nreqs;	451	++nreqs;
323		452
324	LOCK (reqlock);	453	X_LOCK (reqlock);
325	++nready;	454	++nready;
326	reqq_push (&req_queue, req);	455	reqq_push (&req_queue, req);
327	pthread_cond_signal (&reqwait);	456	X_COND_SIGNAL (reqwait);
328	UNLOCK (reqlock);	457	X_UNLOCK (reqlock);
329		458
330	maybe_start_thread ();	459	maybe_start_thread ();
		460
		461	if (wait_callback)
		462	{
		463	dSP;
		464	PUSHMARK (SP);
		465	PUTBACK;
		466	call_sv (wait_callback, G_DISCARD);
		467	SvREFCNT_dec (wait_callback);
		468	}
331	}	469	}
332		470
333	static void end_thread (void)	471	static void end_thread (void)
334	{	472	{
335	aio_req req;	473	aio_req req;
…		…
337	Newz (0, req, 1, aio_cb);	475	Newz (0, req, 1, aio_cb);
338		476
339	req->type = REQ_QUIT;	477	req->type = REQ_QUIT;
340	req->pri = PRI_MAX + PRI_BIAS;	478	req->pri = PRI_MAX + PRI_BIAS;
341		479
342	LOCK (reqlock);	480	X_LOCK (reqlock);
343	reqq_push (&req_queue, req);	481	reqq_push (&req_queue, req);
344	pthread_cond_signal (&reqwait);	482	X_COND_SIGNAL (reqwait);
345	UNLOCK (reqlock);	483	X_UNLOCK (reqlock);
346		484
347	LOCK (wrklock);	485	X_LOCK (wrklock);
348	--started;	486	--started;
349	UNLOCK (wrklock);	487	X_UNLOCK (wrklock);
350	}	488	}
351		489
352	static void set_max_idle (int nthreads)	490	static void set_max_idle (int nthreads)
353	{	491	{
354	if (WORDACCESS_UNSAFE) LOCK (reqlock);	492	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
355	max_idle = nthreads <= 0 ? 1 : nthreads;	493	max_idle = nthreads <= 0 ? 1 : nthreads;
356	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);	494	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
357	}	495	}
358		496
359	static void min_parallel (int nthreads)	497	static void min_parallel (int nthreads)
360	{	498	{
361	if (wanted < nthreads)	499	if (wanted < nthreads)
…		…
376	fd_set rfd;	514	fd_set rfd;
377		515
378	while (nreqs)	516	while (nreqs)
379	{	517	{
380	int size;	518	int size;
381	if (WORDACCESS_UNSAFE) LOCK (reslock);	519	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
382	size = res_queue.size;	520	size = res_queue.size;
383	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	521	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
384		522
385	if (size)	523	if (size)
386	return;	524	return;
387		525
388	maybe_start_thread ();	526	maybe_start_thread ();
389		527
390	FD_ZERO(&rfd);	528	FD_ZERO (&rfd);
391	FD_SET(respipe [0], &rfd);	529	FD_SET (respipe [0], &rfd);
392		530
393	select (respipe [0] + 1, &rfd, 0, 0, 0);	531	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
394	}	532	}
395	}	533	}
396		534
397	static int poll_cb ()	535	static int poll_cb ()
398	{	536	{
…		…
410	{	548	{
411	for (;;)	549	for (;;)
412	{	550	{
413	maybe_start_thread ();	551	maybe_start_thread ();
414		552
415	LOCK (reslock);	553	X_LOCK (reslock);
416	req = reqq_shift (&res_queue);	554	req = reqq_shift (&res_queue);
417		555
418	if (req)	556	if (req)
419	{	557	{
420	--npending;	558	--npending;
421		559
422	if (!res_queue.size)	560	if (!res_queue.size)
423	{	561	{
424	/* read any signals sent by the worker threads */	562	/* read any signals sent by the worker threads */
425	char buf [4];	563	char buf [4];
426	while (read (respipe [0], buf, 4) == 4)	564	while (respipe_read (respipe [0], buf, 4) == 4)
427	;	565	;
428	}	566	}
429	}	567	}
430		568
431	UNLOCK (reslock);	569	X_UNLOCK (reslock);
432		570
433	if (!req)	571	if (!req)
434	break;	572	break;
435		573
436	--nreqs;	574	--nreqs;
…		…
466	}	604	}
467		605
468	return count;	606	return count;
469	}	607	}
470		608
471	static void create_pipe ()
472	{
473	if (pipe (respipe))
474	croak ("unable to initialize result pipe");
475
476	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
477	croak ("cannot set result pipe to nonblocking mode");
478
479	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
480	croak ("cannot set result pipe to nonblocking mode");
481	}
482
483	/*****************************************************************************/	609	/*****************************************************************************/
484		610
485	static void *aio_proc (void *thr_arg)	611	X_THREAD_PROC (bdb_proc)
486	{	612	{
487	aio_req req;	613	aio_req req;
488	struct timespec ts;	614	struct timespec ts;
489	worker *self = (worker *)thr_arg;	615	worker *self = (worker *)thr_arg;
490		616
491	/* try to distribute timeouts somewhat evenly */	617	/* try to distribute timeouts somewhat evenly */
492	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)	618	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
493	* (1000000000UL / 1024UL);
494		619
495	for (;;)	620	for (;;)
496	{	621	{
497	ts.tv_sec = time (0) + IDLE_TIMEOUT;	622	ts.tv_sec = time (0) + IDLE_TIMEOUT;
498		623
499	LOCK (reqlock);	624	X_LOCK (reqlock);
500		625
501	for (;;)	626	for (;;)
502	{	627	{
503	self->req = req = reqq_shift (&req_queue);	628	self->req = req = reqq_shift (&req_queue);
504		629
505	if (req)	630	if (req)
506	break;	631	break;
507		632
508	++idle;	633	++idle;
509		634
510	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)	635	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
511	== ETIMEDOUT)	636	== ETIMEDOUT)
512	{	637	{
513	if (idle > max_idle)	638	if (idle > max_idle)
514	{	639	{
515	--idle;	640	--idle;
516	UNLOCK (reqlock);	641	X_UNLOCK (reqlock);
517	LOCK (wrklock);	642	X_LOCK (wrklock);
518	--started;	643	--started;
519	UNLOCK (wrklock);	644	X_UNLOCK (wrklock);
520	goto quit;	645	goto quit;
521	}	646	}
522		647
523	/* we are allowed to idle, so do so without any timeout */	648	/* we are allowed to idle, so do so without any timeout */
524	pthread_cond_wait (&reqwait, &reqlock);	649	X_COND_WAIT (reqwait, reqlock);
525	ts.tv_sec = time (0) + IDLE_TIMEOUT;	650	ts.tv_sec = time (0) + IDLE_TIMEOUT;
526	}	651	}
527		652
528	--idle;	653	--idle;
529	}	654	}
530		655
531	--nready;	656	--nready;
532		657
533	UNLOCK (reqlock);	658	X_UNLOCK (reqlock);
534		659
535	errno = 0; /* strictly unnecessary */
536
537	switch (req->type)	660	switch (req->type)
538	{	661	{
539	case REQ_QUIT:	662	case REQ_QUIT:
540	goto quit;	663	goto quit;
541		664
		665	case REQ_ENV_OPEN:
		666	req->result = req->env->open (req->env, req->buf1, req->uint1, req->int1);
		667	break;
		668
		669	case REQ_ENV_CLOSE:
		670	req->result = req->env->close (req->env, req->uint1);
		671	break;
		672
		673	case REQ_ENV_TXN_CHECKPOINT:
		674	req->result = req->env->txn_checkpoint (req->env, req->uint1, req->int1, req->uint2);
		675	break;
		676
		677	case REQ_ENV_LOCK_DETECT:
		678	req->result = req->env->lock_detect (req->env, req->uint1, req->uint2, &req->int1);
		679	break;
		680
		681	case REQ_ENV_MEMP_SYNC:
		682	req->result = req->env->memp_sync (req->env, 0);
		683	break;
		684
		685	case REQ_ENV_MEMP_TRICKLE:
		686	req->result = req->env->memp_trickle (req->env, req->int1, &req->int2);
		687	break;
		688
		689	case REQ_DB_OPEN:
		690	req->result = req->db->open (req->db, req->txn, req->buf1, req->buf2, req->int1, req->uint1, req->int2);
		691	break;
		692
		693	case REQ_DB_CLOSE:
		694	req->result = req->db->close (req->db, req->uint1);
		695	break;
		696
		697	case REQ_DB_COMPACT:
		698	req->result = req->db->compact (req->db, req->txn, &req->dbt1, &req->dbt2, 0, req->uint1, 0);
		699	break;
		700
		701	case REQ_DB_SYNC:
		702	req->result = req->db->sync (req->db, req->uint1);
		703	break;
		704
		705	case REQ_DB_PUT:
		706	req->result = req->db->put (req->db, req->txn, &req->dbt1, &req->dbt2, req->uint1);
		707	break;
		708
		709	case REQ_DB_GET:
		710	req->result = req->db->get (req->db, req->txn, &req->dbt1, &req->dbt3, req->uint1);
		711	break;
		712
		713	case REQ_DB_PGET:
		714	req->result = req->db->pget (req->db, req->txn, &req->dbt1, &req->dbt2, &req->dbt3, req->uint1);
		715	break;
		716
		717	case REQ_DB_DEL:
		718	req->result = req->db->del (req->db, req->txn, &req->dbt1, req->uint1);
		719	break;
		720
		721	case REQ_DB_KEY_RANGE:
		722	req->result = req->db->key_range (req->db, req->txn, &req->dbt1, &req->key_range, req->uint1);
		723	break;
		724
		725	case REQ_TXN_COMMIT:
		726	req->result = req->txn->commit (req->txn, req->uint1);
		727	break;
		728
		729	case REQ_TXN_ABORT:
		730	req->result = req->txn->abort (req->txn);
		731	break;
		732
		733	case REQ_C_CLOSE:
		734	req->result = req->dbc->c_close (req->dbc);
		735	break;
		736
		737	case REQ_C_COUNT:
		738	{
		739	db_recno_t recno;
		740	req->result = req->dbc->c_count (req->dbc, &recno, req->uint1);
		741	req->uv1 = recno;
		742	}
		743	break;
		744
		745	case REQ_C_PUT:
		746	req->result = req->dbc->c_put (req->dbc, &req->dbt1, &req->dbt2, req->uint1);
		747	break;
		748
		749	case REQ_C_GET:
		750	req->result = req->dbc->c_get (req->dbc, &req->dbt1, &req->dbt3, req->uint1);
		751	break;
		752
		753	case REQ_C_PGET:
		754	req->result = req->dbc->c_pget (req->dbc, &req->dbt1, &req->dbt2, &req->dbt3, req->uint1);
		755	break;
		756
		757	case REQ_C_DEL:
		758	req->result = req->dbc->c_del (req->dbc, req->uint1);
		759	break;
		760
		761	case REQ_SEQ_OPEN:
		762	req->result = req->seq->open (req->seq, req->txn, &req->dbt1, req->uint1);
		763	break;
		764
		765	case REQ_SEQ_CLOSE:
		766	req->result = req->seq->close (req->seq, req->uint1);
		767	break;
		768
		769	case REQ_SEQ_GET:
		770	req->result = req->seq->get (req->seq, req->txn, req->int1, &req->seq_t, req->uint1);
		771	break;
		772
		773	case REQ_SEQ_REMOVE:
		774	req->result = req->seq->remove (req->seq, req->txn, req->uint1);
		775	break;
		776
542	default:	777	default:
543	//req->result = ENOSYS;	778	req->result = ENOSYS;
544	break;	779	break;
545	}	780	}
546		781
547	//req->errorno = errno;
548
549	LOCK (reslock);	782	X_LOCK (reslock);
550		783
551	++npending;	784	++npending;
552		785
553	if (!reqq_push (&res_queue, req))	786	if (!reqq_push (&res_queue, req))
554	/* write a dummy byte to the pipe so fh becomes ready */	787	/* write a dummy byte to the pipe so fh becomes ready */
555	write (respipe [1], &respipe, 1);	788	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
556		789
557	self->req = 0;	790	self->req = 0;
558	worker_clear (self);	791	worker_clear (self);
559		792
560	UNLOCK (reslock);	793	X_UNLOCK (reslock);
561	}	794	}
562		795
563	quit:	796	quit:
564	LOCK (wrklock);	797	X_LOCK (wrklock);
565	worker_free (self);	798	worker_free (self);
566	UNLOCK (wrklock);	799	X_UNLOCK (wrklock);
567		800
568	return 0;	801	return 0;
569	}	802	}
570		803
571	/*****************************************************************************/	804	/*****************************************************************************/
572		805
573	static void atfork_prepare (void)	806	static void atfork_prepare (void)
574	{	807	{
575	LOCK (wrklock);	808	X_LOCK (wrklock);
576	LOCK (reqlock);	809	X_LOCK (reqlock);
577	LOCK (reslock);	810	X_LOCK (reslock);
578	}	811	}
579		812
580	static void atfork_parent (void)	813	static void atfork_parent (void)
581	{	814	{
582	UNLOCK (reslock);	815	X_UNLOCK (reslock);
583	UNLOCK (reqlock);	816	X_UNLOCK (reqlock);
584	UNLOCK (wrklock);	817	X_UNLOCK (wrklock);
585	}	818	}
586		819
587	static void atfork_child (void)	820	static void atfork_child (void)
588	{	821	{
589	aio_req prv;	822	aio_req prv;
…		…
609	idle = 0;	842	idle = 0;
610	nreqs = 0;	843	nreqs = 0;
611	nready = 0;	844	nready = 0;
612	npending = 0;	845	npending = 0;
613		846
614	close (respipe [0]);	847	respipe_close (respipe [0]);
615	close (respipe [1]);	848	respipe_close (respipe [1]);
		849
616	create_pipe ();	850	create_pipe (respipe);
617		851
618	atfork_parent ();	852	atfork_parent ();
619	}	853	}
620		854
621	#define dREQ \	855	#define dREQ(reqtype) \
622	aio_req req; \	856	aio_req req; \
623	int req_pri = next_pri; \	857	int req_pri = next_pri; \
624	next_pri = DEFAULT_PRI + PRI_BIAS; \	858	next_pri = DEFAULT_PRI + PRI_BIAS; \
625	\	859	\
626	if (SvOK (callback) && !SvROK (callback)) \	860	if (SvOK (callback) && !SvROK (callback)) \
627	croak ("callback must be undef or of reference type"); \	861	croak ("callback must be undef or of reference type"); \
628	\	862	\
629	Newz (0, req, 1, aio_cb); \	863	Newz (0, req, 1, aio_cb); \
630	if (!req) \	864	if (!req) \
631	croak ("out of memory during aio_req allocation"); \	865	croak ("out of memory during aio_req allocation"); \
632	\	866	\
633	req->callback = newSVsv (callback); \	867	req->callback = newSVsv (callback); \
		868	req->type = (reqtype); \
634	req->pri = req_pri	869	req->pri = req_pri
635		870
636	#define REQ_SEND \	871	#define REQ_SEND \
637	req_send (req); \	872	req_send (req)
		873
		874	#define SvPTR(var, arg, type, class, nullok) \
		875	if (!SvOK (arg)) \
		876	{ \
		877	if (!nullok) \
		878	croak (# var " must be a " # class " object, not undef"); \
638	\	879	\
639	if (GIMME_V != G_VOID) \	880	(var) = 0; \
640	XPUSHs (req_sv (req, AIO_REQ_KLASS));	881	} \
641		882	else if (sv_derived_from ((arg), # class)) \
		883	{ \
		884	IV tmp = SvIV ((SV*) SvRV (arg)); \
		885	(var) = INT2PTR (type, tmp); \
		886	if (!var) \
		887	croak (# var " is not a valid " # class " object anymore"); \
		888	} \
		889	else \
		890	croak (# var " is not of type " # class); \
		891	\
		892
		893	static void
		894	ptr_nuke (SV *sv)
		895	{
		896	assert (SvROK (sv));
		897	sv_setiv (SvRV (sv), 0);
		898	}
		899
642	MODULE = BDB::AIO PACKAGE = BDB::AIO	900	MODULE = BDB PACKAGE = BDB
643		901
644	PROTOTYPES: ENABLE	902	PROTOTYPES: ENABLE
645		903
646	BOOT:	904	BOOT:
647	{	905	{
648	HV *stash = gv_stashpv ("BDB::AIO", 1);	906	HV *stash = gv_stashpv ("BDB", 1);
649		907
650	create_pipe ();	908	static const struct {
		909	const char *name;
		910	IV iv;
		911	} *civ, const_iv[] = {
		912	#define const_iv(name) { # name, (IV)DB_ ## name },
		913	const_iv (RPCCLIENT)
		914	const_iv (INIT_CDB)
		915	const_iv (INIT_LOCK)
		916	const_iv (INIT_LOG)
		917	const_iv (INIT_MPOOL)
		918	const_iv (INIT_REP)
		919	const_iv (INIT_TXN)
		920	const_iv (RECOVER)
		921	const_iv (INIT_TXN)
		922	const_iv (RECOVER_FATAL)
		923	const_iv (CREATE)
		924	const_iv (USE_ENVIRON)
		925	const_iv (USE_ENVIRON_ROOT)
		926	const_iv (LOCKDOWN)
		927	const_iv (PRIVATE)
		928	const_iv (REGISTER)
		929	const_iv (SYSTEM_MEM)
		930	const_iv (AUTO_COMMIT)
		931	const_iv (CDB_ALLDB)
		932	const_iv (DIRECT_DB)
		933	const_iv (DIRECT_LOG)
		934	const_iv (DSYNC_DB)
		935	const_iv (DSYNC_LOG)
		936	const_iv (LOG_AUTOREMOVE)
		937	const_iv (LOG_INMEMORY)
		938	const_iv (NOLOCKING)
		939	const_iv (NOMMAP)
		940	const_iv (NOPANIC)
		941	const_iv (OVERWRITE)
		942	const_iv (PANIC_ENVIRONMENT)
		943	const_iv (REGION_INIT)
		944	const_iv (TIME_NOTGRANTED)
		945	const_iv (TXN_NOSYNC)
		946	const_iv (TXN_WRITE_NOSYNC)
		947	const_iv (WRITECURSOR)
		948	const_iv (YIELDCPU)
		949	const_iv (ENCRYPT_AES)
		950	const_iv (XA_CREATE)
		951	const_iv (BTREE)
		952	const_iv (HASH)
		953	const_iv (QUEUE)
		954	const_iv (RECNO)
		955	const_iv (UNKNOWN)
		956	const_iv (EXCL)
		957	const_iv (READ_COMMITTED)
		958	const_iv (READ_UNCOMMITTED)
		959	const_iv (TRUNCATE)
		960	const_iv (NOSYNC)
		961	const_iv (CHKSUM)
		962	const_iv (ENCRYPT)
		963	const_iv (TXN_NOT_DURABLE)
		964	const_iv (DUP)
		965	const_iv (DUPSORT)
		966	const_iv (RECNUM)
		967	const_iv (RENUMBER)
		968	const_iv (REVSPLITOFF)
		969	const_iv (INORDER)
		970	const_iv (CONSUME)
		971	const_iv (CONSUME_WAIT)
		972	const_iv (GET_BOTH)
		973	const_iv (GET_BOTH_RANGE)
		974	//const_iv (SET_RECNO)
		975	//const_iv (MULTIPLE)
		976	const_iv (SNAPSHOT)
		977	const_iv (JOIN_ITEM)
		978	const_iv (RMW)
		979
		980	const_iv (NOTFOUND)
		981	const_iv (KEYEMPTY)
		982	const_iv (LOCK_DEADLOCK)
		983	const_iv (LOCK_NOTGRANTED)
		984	const_iv (RUNRECOVERY)
		985	const_iv (OLD_VERSION)
		986	const_iv (REP_HANDLE_DEAD)
		987	const_iv (REP_LOCKOUT)
		988	const_iv (SECONDARY_BAD)
		989
		990	const_iv (FREE_SPACE)
		991	const_iv (FREELIST_ONLY)
		992
		993	const_iv (APPEND)
		994	const_iv (NODUPDATA)
		995	const_iv (NOOVERWRITE)
		996
		997	const_iv (TXN_NOWAIT)
		998	const_iv (TXN_SYNC)
		999
		1000	const_iv (SET_LOCK_TIMEOUT)
		1001	const_iv (SET_TXN_TIMEOUT)
		1002
		1003	const_iv (JOIN_ITEM)
		1004	const_iv (FIRST)
		1005	const_iv (NEXT)
		1006	const_iv (NEXT_DUP)
		1007	const_iv (NEXT_NODUP)
		1008	const_iv (PREV)
		1009	const_iv (PREV_NODUP)
		1010	const_iv (SET)
		1011	const_iv (SET_RANGE)
		1012	const_iv (LAST)
		1013	const_iv (BEFORE)
		1014	const_iv (AFTER)
		1015	const_iv (CURRENT)
		1016	const_iv (KEYFIRST)
		1017	const_iv (KEYLAST)
		1018	const_iv (NODUPDATA)
		1019
		1020	const_iv (FORCE)
		1021
		1022	const_iv (LOCK_DEFAULT)
		1023	const_iv (LOCK_EXPIRE)
		1024	const_iv (LOCK_MAXLOCKS)
		1025	const_iv (LOCK_MAXWRITE)
		1026	const_iv (LOCK_MINLOCKS)
		1027	const_iv (LOCK_MINWRITE)
		1028	const_iv (LOCK_OLDEST)
		1029	const_iv (LOCK_RANDOM)
		1030	const_iv (LOCK_YOUNGEST)
		1031
		1032	const_iv (SEQ_DEC)
		1033	const_iv (SEQ_INC)
		1034	const_iv (SEQ_WRAP)
		1035
		1036	const_iv (BUFFER_SMALL)
		1037	const_iv (DONOTINDEX)
		1038	const_iv (KEYEMPTY )
		1039	const_iv (KEYEXIST )
		1040	const_iv (LOCK_DEADLOCK)
		1041	const_iv (LOCK_NOTGRANTED)
		1042	const_iv (LOG_BUFFER_FULL)
		1043	const_iv (NOSERVER)
		1044	const_iv (NOSERVER_HOME)
		1045	const_iv (NOSERVER_ID)
		1046	const_iv (NOTFOUND)
		1047	const_iv (OLD_VERSION)
		1048	const_iv (PAGE_NOTFOUND)
		1049	const_iv (REP_DUPMASTER)
		1050	const_iv (REP_HANDLE_DEAD)
		1051	const_iv (REP_HOLDELECTION)
		1052	const_iv (REP_IGNORE)
		1053	const_iv (REP_ISPERM)
		1054	const_iv (REP_JOIN_FAILURE)
		1055	const_iv (REP_LOCKOUT)
		1056	const_iv (REP_NEWMASTER)
		1057	const_iv (REP_NEWSITE)
		1058	const_iv (REP_NOTPERM)
		1059	const_iv (REP_UNAVAIL)
		1060	const_iv (RUNRECOVERY)
		1061	const_iv (SECONDARY_BAD)
		1062	const_iv (VERIFY_BAD)
		1063	const_iv (VERSION_MISMATCH)
		1064
		1065	const_iv (VERB_DEADLOCK)
		1066	const_iv (VERB_RECOVERY)
		1067	const_iv (VERB_REGISTER)
		1068	const_iv (VERB_REPLICATION)
		1069	const_iv (VERB_WAITSFOR)
		1070
		1071	const_iv (VERSION_MAJOR)
		1072	const_iv (VERSION_MINOR)
		1073	const_iv (VERSION_PATCH)
		1074	#if DB_VERSION_MINOR >= 5
		1075	const_iv (MULTIVERSION)
		1076	const_iv (TXN_SNAPSHOT)
		1077	#endif
		1078	};
		1079
		1080	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		1081	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		1082
		1083	newCONSTSUB (stash, "DB_VERSION", newSVnv (DB_VERSION_MAJOR + DB_VERSION_MINOR * .1));
		1084	newCONSTSUB (stash, "DB_VERSION_STRING", newSVpv (DB_VERSION_STRING, 0));
		1085
		1086	create_pipe (respipe);
		1087
651	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1088	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
		1089	#ifdef _WIN32
		1090	X_MUTEX_CHECK (wrklock);
		1091	X_MUTEX_CHECK (reslock);
		1092	X_MUTEX_CHECK (reqlock);
		1093
		1094	X_COND_CHECK (reqwait);
		1095	#endif
652	}	1096	}
653		1097
654	void	1098	void
655	max_poll_reqs (int nreqs)	1099	max_poll_reqs (int nreqs)
656	PROTOTYPE: $	1100	PROTOTYPE: $
…		…
685	max_outstanding = maxreqs;	1129	max_outstanding = maxreqs;
686	OUTPUT:	1130	OUTPUT:
687	RETVAL	1131	RETVAL
688		1132
689	int	1133	int
690	bdbreq_pri (int pri = 0)	1134	dbreq_pri (int pri = 0)
691	PROTOTYPE: ;$	1135	PROTOTYPE: ;$
692	CODE:	1136	CODE:
693	RETVAL = next_pri - PRI_BIAS;	1137	RETVAL = next_pri - PRI_BIAS;
694	if (items > 0)	1138	if (items > 0)
695	{	1139	{
…		…
699	}	1143	}
700	OUTPUT:	1144	OUTPUT:
701	RETVAL	1145	RETVAL
702		1146
703	void	1147	void
704	bdbreq_nice (int nice = 0)	1148	dbreq_nice (int nice = 0)
705	CODE:	1149	CODE:
706	nice = next_pri - nice;	1150	nice = next_pri - nice;
707	if (nice < PRI_MIN) nice = PRI_MIN;	1151	if (nice < PRI_MIN) nice = PRI_MIN;
708	if (nice > PRI_MAX) nice = PRI_MAX;	1152	if (nice > PRI_MAX) nice = PRI_MAX;
709	next_pri = nice + PRI_BIAS;	1153	next_pri = nice + PRI_BIAS;
…		…
717	poll_wait ();	1161	poll_wait ();
718	poll_cb ();	1162	poll_cb ();
719	}	1163	}
720		1164
721	int	1165	int
722	poll()	1166	poll ()
723	PROTOTYPE:	1167	PROTOTYPE:
724	CODE:	1168	CODE:
725	poll_wait ();	1169	poll_wait ();
726	RETVAL = poll_cb ();	1170	RETVAL = poll_cb ();
727	OUTPUT:	1171	OUTPUT:
728	RETVAL	1172	RETVAL
729		1173
730	int	1174	int
731	poll_fileno()	1175	poll_fileno ()
732	PROTOTYPE:	1176	PROTOTYPE:
733	CODE:	1177	CODE:
734	RETVAL = respipe [0];	1178	RETVAL = respipe [0];
735	OUTPUT:	1179	OUTPUT:
736	RETVAL	1180	RETVAL
737		1181
738	int	1182	int
739	poll_cb(...)	1183	poll_cb (...)
740	PROTOTYPE:	1184	PROTOTYPE:
741	CODE:	1185	CODE:
742	RETVAL = poll_cb ();	1186	RETVAL = poll_cb ();
743	OUTPUT:	1187	OUTPUT:
744	RETVAL	1188	RETVAL
745		1189
746	void	1190	void
747	poll_wait()	1191	poll_wait ()
748	PROTOTYPE:	1192	PROTOTYPE:
749	CODE:	1193	CODE:
750	poll_wait ();	1194	poll_wait ();
751		1195
752	int	1196	int
753	nreqs()	1197	nreqs ()
754	PROTOTYPE:	1198	PROTOTYPE:
755	CODE:	1199	CODE:
756	RETVAL = nreqs;	1200	RETVAL = nreqs;
757	OUTPUT:	1201	OUTPUT:
758	RETVAL	1202	RETVAL
759		1203
760	int	1204	int
761	nready()	1205	nready ()
762	PROTOTYPE:	1206	PROTOTYPE:
763	CODE:	1207	CODE:
764	RETVAL = get_nready ();	1208	RETVAL = get_nready ();
765	OUTPUT:	1209	OUTPUT:
766	RETVAL	1210	RETVAL
767		1211
768	int	1212	int
769	npending()	1213	npending ()
770	PROTOTYPE:	1214	PROTOTYPE:
771	CODE:	1215	CODE:
772	RETVAL = get_npending ();	1216	RETVAL = get_npending ();
773	OUTPUT:	1217	OUTPUT:
774	RETVAL	1218	RETVAL
775		1219
776	int	1220	int
777	nthreads()	1221	nthreads ()
778	PROTOTYPE:	1222	PROTOTYPE:
779	CODE:	1223	CODE:
780	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1224	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
781	RETVAL = started;	1225	RETVAL = started;
782	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	1226	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
783	OUTPUT:	1227	OUTPUT:
784	RETVAL	1228	RETVAL
785		1229
		1230	void
		1231	set_sync_prepare (SV *cb)
		1232	PROTOTYPE: &
		1233	CODE:
		1234	SvREFCNT_dec (prepare_cb);
		1235	prepare_cb = newSVsv (cb);
786		1236
		1237	char *
		1238	strerror (int errorno = errno)
		1239	PROTOTYPE: ;$
		1240	CODE:
		1241	RETVAL = db_strerror (errorno);
		1242	OUTPUT:
		1243	RETVAL
		1244
		1245	DB_ENV *
		1246	db_env_create (U32 env_flags = 0)
		1247	CODE:
		1248	{
		1249	errno = db_env_create (&RETVAL, env_flags);
		1250	if (errno)
		1251	croak ("db_env_create: %s", db_strerror (errno));
		1252
		1253	if (0)
		1254	{
		1255	RETVAL->set_errcall (RETVAL, debug_errcall);
		1256	RETVAL->set_msgcall (RETVAL, debug_msgcall);
		1257	}
		1258	}
		1259	OUTPUT:
		1260	RETVAL
		1261
		1262	void
		1263	db_env_open (DB_ENV *env, octetstring db_home, U32 open_flags, int mode, SV *callback = &PL_sv_undef)
		1264	CODE:
		1265	{
		1266	dREQ (REQ_ENV_OPEN);
		1267
		1268	env->set_thread_count (env, wanted + 2);
		1269
		1270	req->env = env;
		1271	req->uint1 = open_flags | DB_THREAD;
		1272	req->int1 = mode;
		1273	req->buf1 = strdup_ornull (db_home);
		1274	REQ_SEND;
		1275	}
		1276
		1277	void
		1278	db_env_close (DB_ENV *env, U32 flags = 0, SV *callback = &PL_sv_undef)
		1279	CODE:
		1280	{
		1281	dREQ (REQ_ENV_CLOSE);
		1282	req->env = env;
		1283	req->uint1 = flags;
		1284	REQ_SEND;
		1285	ptr_nuke (ST (0));
		1286	}
		1287
		1288	void
		1289	db_env_txn_checkpoint (DB_ENV *env, U32 kbyte = 0, U32 min = 0, U32 flags = 0, SV *callback = &PL_sv_undef)
		1290	CODE:
		1291	{
		1292	dREQ (REQ_ENV_TXN_CHECKPOINT);
		1293	req->env = env;
		1294	req->uint1 = kbyte;
		1295	req->int1 = min;
		1296	req->uint2 = flags;
		1297	REQ_SEND;
		1298	}
		1299
		1300	void
		1301	db_env_lock_detect (DB_ENV *env, U32 flags = 0, U32 atype = DB_LOCK_DEFAULT, SV *dummy = 0, SV *callback = &PL_sv_undef)
		1302	CODE:
		1303	{
		1304	dREQ (REQ_ENV_LOCK_DETECT);
		1305	req->env = env;
		1306	req->uint1 = flags;
		1307	req->uint2 = atype;
		1308	REQ_SEND;
		1309	}
		1310
		1311	void
		1312	db_env_memp_sync (DB_ENV *env, SV *dummy = 0, SV *callback = &PL_sv_undef)
		1313	CODE:
		1314	{
		1315	dREQ (REQ_ENV_MEMP_SYNC);
		1316	req->env = env;
		1317	REQ_SEND;
		1318	}
		1319
		1320	void
		1321	db_env_memp_trickle (DB_ENV *env, int percent, SV *dummy = 0, SV *callback = &PL_sv_undef)
		1322	CODE:
		1323	{
		1324	dREQ (REQ_ENV_MEMP_TRICKLE);
		1325	req->env = env;
		1326	req->int1 = percent;
		1327	REQ_SEND;
		1328	}
		1329
		1330
		1331	DB *
		1332	db_create (DB_ENV *env = 0, U32 flags = 0)
		1333	CODE:
		1334	{
		1335	errno = db_create (&RETVAL, env, flags);
		1336	if (errno)
		1337	croak ("db_create: %s", db_strerror (errno));
		1338
		1339	if (RETVAL)
		1340	RETVAL->app_private = (void *)newSVsv (ST (0));
		1341	}
		1342	OUTPUT:
		1343	RETVAL
		1344
		1345	void
		1346	db_open (DB *db, DB_TXN_ornull *txnid, octetstring file, octetstring database, int type, U32 flags, int mode, SV *callback = &PL_sv_undef)
		1347	CODE:
		1348	{
		1349	dREQ (REQ_DB_OPEN);
		1350	req->db = db;
		1351	req->txn = txnid;
		1352	req->buf1 = strdup_ornull (file);
		1353	req->buf2 = strdup_ornull (database);
		1354	req->int1 = type;
		1355	req->uint1 = flags | DB_THREAD;
		1356	req->int2 = mode;
		1357	REQ_SEND;
		1358	}
		1359
		1360	void
		1361	db_close (DB *db, U32 flags = 0, SV *callback = &PL_sv_undef)
		1362	CODE:
		1363	{
		1364	dREQ (REQ_DB_CLOSE);
		1365	req->db = db;
		1366	req->uint1 = flags;
		1367	req->sv1 = (SV *)db->app_private;
		1368	REQ_SEND;
		1369	ptr_nuke (ST (0));
		1370	}
		1371
		1372	void
		1373	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 = &PL_sv_undef)
		1374	CODE:
		1375	{
		1376	dREQ (REQ_DB_COMPACT);
		1377	req->db = db;
		1378	req->txn = txn;
		1379	sv_to_dbt (&req->dbt1, start);
		1380	sv_to_dbt (&req->dbt2, stop);
		1381	req->uint1 = flags;
		1382	REQ_SEND;
		1383	}
		1384
		1385	void
		1386	db_sync (DB *db, U32 flags = 0, SV *callback = &PL_sv_undef)
		1387	CODE:
		1388	{
		1389	dREQ (REQ_DB_SYNC);
		1390	req->db = db;
		1391	req->uint1 = flags;
		1392	REQ_SEND;
		1393	}
		1394
		1395	void
		1396	db_key_range (DB *db, DB_TXN_ornull *txn, SV *key, SV *key_range, U32 flags = 0, SV *callback = &PL_sv_undef)
		1397	CODE:
		1398	{
		1399	dREQ (REQ_DB_KEY_RANGE);
		1400	req->db = db;
		1401	req->txn = txn;
		1402	sv_to_dbt (&req->dbt1, key);
		1403	req->uint1 = flags;
		1404	req->sv1 = SvREFCNT_inc (key_range); SvREADONLY_on (key_range);
		1405	REQ_SEND;
		1406	}
		1407
		1408	void
		1409	db_put (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = &PL_sv_undef)
		1410	CODE:
		1411	{
		1412	dREQ (REQ_DB_PUT);
		1413	req->db = db;
		1414	req->txn = txn;
		1415	sv_to_dbt (&req->dbt1, key);
		1416	sv_to_dbt (&req->dbt2, data);
		1417	req->uint1 = flags;
		1418	REQ_SEND;
		1419	}
		1420
		1421	void
		1422	db_get (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = &PL_sv_undef)
		1423	CODE:
		1424	{
		1425	dREQ (REQ_DB_GET);
		1426	req->db = db;
		1427	req->txn = txn;
		1428	req->uint1 = flags;
		1429	sv_to_dbt (&req->dbt1, key);
		1430	req->dbt3.flags = DB_DBT_MALLOC;
		1431	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1432	REQ_SEND;
		1433	}
		1434
		1435	void
		1436	db_pget (DB *db, DB_TXN_ornull *txn, SV *key, SV *pkey, SV *data, U32 flags = 0, SV *callback = &PL_sv_undef)
		1437	CODE:
		1438	{
		1439	dREQ (REQ_DB_PGET);
		1440	req->db = db;
		1441	req->txn = txn;
		1442	req->uint1 = flags;
		1443	sv_to_dbt (&req->dbt1, key);
		1444	sv_to_dbt (&req->dbt2, pkey);
		1445	req->dbt3.flags = DB_DBT_MALLOC;
		1446	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1447	REQ_SEND;
		1448	}
		1449
		1450	void
		1451	db_del (DB *db, DB_TXN_ornull *txn, SV *key, U32 flags = 0, SV *callback = &PL_sv_undef)
		1452	CODE:
		1453	{
		1454	dREQ (REQ_DB_DEL);
		1455	req->db = db;
		1456	req->txn = txn;
		1457	req->uint1 = flags;
		1458	sv_to_dbt (&req->dbt1, key);
		1459	REQ_SEND;
		1460	}
		1461
		1462	void
		1463	db_txn_commit (DB_TXN *txn, U32 flags = 0, SV *callback = &PL_sv_undef)
		1464	CODE:
		1465	{
		1466	dREQ (REQ_TXN_COMMIT);
		1467	req->txn = txn;
		1468	req->uint1 = flags;
		1469	REQ_SEND;
		1470	ptr_nuke (ST (0));
		1471	}
		1472
		1473	void
		1474	db_txn_abort (DB_TXN *txn, SV *callback = &PL_sv_undef)
		1475	CODE:
		1476	{
		1477	dREQ (REQ_TXN_ABORT);
		1478	req->txn = txn;
		1479	REQ_SEND;
		1480	ptr_nuke (ST (0));
		1481	}
		1482
		1483	void
		1484	db_c_close (DBC *dbc, SV *callback = &PL_sv_undef)
		1485	CODE:
		1486	{
		1487	dREQ (REQ_C_CLOSE);
		1488	req->dbc = dbc;
		1489	REQ_SEND;
		1490	ptr_nuke (ST (0));
		1491	}
		1492
		1493	void
		1494	db_c_count (DBC *dbc, SV *count, U32 flags = 0, SV *callback = &PL_sv_undef)
		1495	CODE:
		1496	{
		1497	dREQ (REQ_C_COUNT);
		1498	req->dbc = dbc;
		1499	req->sv1 = SvREFCNT_inc (count);
		1500	REQ_SEND;
		1501	}
		1502
		1503	void
		1504	db_c_put (DBC *dbc, SV *key, SV *data, U32 flags = 0, SV *callback = &PL_sv_undef)
		1505	CODE:
		1506	{
		1507	dREQ (REQ_C_PUT);
		1508	req->dbc = dbc;
		1509	sv_to_dbt (&req->dbt1, key);
		1510	sv_to_dbt (&req->dbt2, data);
		1511	req->uint1 = flags;
		1512	REQ_SEND;
		1513	}
		1514
		1515	void
		1516	db_c_get (DBC *dbc, SV *key, SV *data, U32 flags = 0, SV *callback = &PL_sv_undef)
		1517	CODE:
		1518	{
		1519	dREQ (REQ_C_GET);
		1520	req->dbc = dbc;
		1521	req->uint1 = flags;
		1522	if ((flags & DB_SET) == DB_SET
		1523	|| (flags & DB_SET_RANGE) == DB_SET_RANGE)
		1524	sv_to_dbt (&req->dbt1, key);
		1525	else
		1526	req->dbt1.flags = DB_DBT_MALLOC;
		1527
		1528	req->sv1 = SvREFCNT_inc (key); SvREADONLY_on (key);
		1529
		1530	if ((flags & DB_GET_BOTH) == DB_GET_BOTH
		1531	|| (flags & DB_GET_BOTH_RANGE) == DB_GET_BOTH_RANGE)
		1532	sv_to_dbt (&req->dbt3, data);
		1533	else
		1534	req->dbt3.flags = DB_DBT_MALLOC;
		1535
		1536	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1537	REQ_SEND;
		1538	}
		1539
		1540	void
		1541	db_c_pget (DBC *dbc, SV *key, SV *pkey, SV *data, U32 flags = 0, SV *callback = &PL_sv_undef)
		1542	CODE:
		1543	{
		1544	dREQ (REQ_C_PGET);
		1545	req->dbc = dbc;
		1546	req->uint1 = flags;
		1547	if ((flags & DB_SET) == DB_SET
		1548	|| (flags & DB_SET_RANGE) == DB_SET_RANGE)
		1549	sv_to_dbt (&req->dbt1, key);
		1550	else
		1551	req->dbt1.flags = DB_DBT_MALLOC;
		1552
		1553	req->sv1 = SvREFCNT_inc (key); SvREADONLY_on (key);
		1554
		1555	req->dbt2.flags = DB_DBT_MALLOC;
		1556	req->sv2 = SvREFCNT_inc (pkey); SvREADONLY_on (pkey);
		1557
		1558	if ((flags & DB_GET_BOTH) == DB_GET_BOTH
		1559	|| (flags & DB_GET_BOTH_RANGE) == DB_GET_BOTH_RANGE)
		1560	sv_to_dbt (&req->dbt3, data);
		1561	else
		1562	req->dbt3.flags = DB_DBT_MALLOC;
		1563
		1564	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1565	REQ_SEND;
		1566	}
		1567
		1568	void
		1569	db_c_del (DBC *dbc, U32 flags = 0, SV *callback = &PL_sv_undef)
		1570	CODE:
		1571	{
		1572	dREQ (REQ_C_DEL);
		1573	req->dbc = dbc;
		1574	req->uint1 = flags;
		1575	REQ_SEND;
		1576	}
		1577
		1578
		1579	void
		1580	db_sequence_open (DB_SEQUENCE *seq, DB_TXN_ornull *txnid, SV *key, U32 flags = 0, SV *callback = &PL_sv_undef)
		1581	CODE:
		1582	{
		1583	dREQ (REQ_SEQ_OPEN);
		1584	req->seq = seq;
		1585	req->txn = txnid;
		1586	req->uint1 = flags | DB_THREAD;
		1587	sv_to_dbt (&req->dbt1, key);
		1588	REQ_SEND;
		1589	}
		1590
		1591	void
		1592	db_sequence_close (DB_SEQUENCE *seq, U32 flags = 0, SV *callback = &PL_sv_undef)
		1593	CODE:
		1594	{
		1595	dREQ (REQ_SEQ_CLOSE);
		1596	req->seq = seq;
		1597	req->uint1 = flags;
		1598	REQ_SEND;
		1599	ptr_nuke (ST (0));
		1600	}
		1601
		1602	void
		1603	db_sequence_get (DB_SEQUENCE *seq, DB_TXN_ornull *txnid, int delta, SV *seq_value, U32 flags = DB_TXN_NOSYNC, SV *callback = &PL_sv_undef)
		1604	CODE:
		1605	{
		1606	dREQ (REQ_SEQ_GET);
		1607	req->seq = seq;
		1608	req->txn = txnid;
		1609	req->int1 = delta;
		1610	req->uint1 = flags;
		1611	req->sv1 = SvREFCNT_inc (seq_value); SvREADONLY_on (seq_value);
		1612	REQ_SEND;
		1613	}
		1614
		1615	void
		1616	db_sequence_remove (DB_SEQUENCE *seq, DB_TXN_ornull *txnid = 0, U32 flags = 0, SV *callback = &PL_sv_undef)
		1617	CODE:
		1618	{
		1619	dREQ (REQ_SEQ_REMOVE);
		1620	req->seq = seq;
		1621	req->txn = txnid;
		1622	req->uint1 = flags;
		1623	REQ_SEND;
		1624	}
		1625
		1626
		1627	MODULE = BDB PACKAGE = BDB::Env
		1628
		1629	void
		1630	DESTROY (DB_ENV_ornull *env)
		1631	CODE:
		1632	if (env)
		1633	env->close (env, 0);
		1634
		1635	int set_data_dir (DB_ENV *env, const char *dir)
		1636	CODE:
		1637	RETVAL = env->set_data_dir (env, dir);
		1638	OUTPUT:
		1639	RETVAL
		1640
		1641	int set_tmp_dir (DB_ENV *env, const char *dir)
		1642	CODE:
		1643	RETVAL = env->set_tmp_dir (env, dir);
		1644	OUTPUT:
		1645	RETVAL
		1646
		1647	int set_lg_dir (DB_ENV *env, const char *dir)
		1648	CODE:
		1649	RETVAL = env->set_lg_dir (env, dir);
		1650	OUTPUT:
		1651	RETVAL
		1652
		1653	int set_shm_key (DB_ENV *env, long shm_key)
		1654	CODE:
		1655	RETVAL = env->set_shm_key (env, shm_key);
		1656	OUTPUT:
		1657	RETVAL
		1658
		1659	int set_cachesize (DB_ENV *env, U32 gbytes, U32 bytes, int ncache = 0)
		1660	CODE:
		1661	RETVAL = env->set_cachesize (env, gbytes, bytes, ncache);
		1662	OUTPUT:
		1663	RETVAL
		1664
		1665	int set_flags (DB_ENV *env, U32 flags, int onoff)
		1666	CODE:
		1667	RETVAL = env->set_flags (env, flags, onoff);
		1668	OUTPUT:
		1669	RETVAL
		1670
		1671	void set_errfile (DB_ENV *env, FILE *errfile)
		1672	CODE:
		1673	env->set_errfile (env, errfile);
		1674
		1675	void set_msgfile (DB_ENV *env, FILE *msgfile)
		1676	CODE:
		1677	env->set_msgfile (env, msgfile);
		1678
		1679	int set_verbose (DB_ENV *env, U32 which, int onoff = 1)
		1680	CODE:
		1681	RETVAL = env->set_verbose (env, which, onoff);
		1682	OUTPUT:
		1683	RETVAL
		1684
		1685	int set_encrypt (DB_ENV *env, const char *password, U32 flags = 0)
		1686	CODE:
		1687	RETVAL = env->set_encrypt (env, password, flags);
		1688	OUTPUT:
		1689	RETVAL
		1690
		1691	int set_timeout (DB_ENV *env, NV timeout, U32 flags)
		1692	CODE:
		1693	RETVAL = env->set_timeout (env, timeout * 1000000, flags);
		1694	OUTPUT:
		1695	RETVAL
		1696
		1697	int set_mp_max_openfd (DB_ENV *env, int maxopenfd);
		1698	CODE:
		1699	RETVAL = env->set_mp_max_openfd (env, maxopenfd);
		1700	OUTPUT:
		1701	RETVAL
		1702
		1703	int set_mp_max_write (DB_ENV *env, int maxwrite, int maxwrite_sleep);
		1704	CODE:
		1705	RETVAL = env->set_mp_max_write (env, maxwrite, maxwrite_sleep);
		1706	OUTPUT:
		1707	RETVAL
		1708
		1709	int set_mp_mmapsize (DB_ENV *env, int mmapsize_mb)
		1710	CODE:
		1711	RETVAL = env->set_mp_mmapsize (env, ((size_t)mmapsize_mb) << 20);
		1712	OUTPUT:
		1713	RETVAL
		1714
		1715	int set_lk_detect (DB_ENV *env, U32 detect = DB_LOCK_DEFAULT)
		1716	CODE:
		1717	RETVAL = env->set_lk_detect (env, detect);
		1718	OUTPUT:
		1719	RETVAL
		1720
		1721	int set_lk_max_lockers (DB_ENV *env, U32 max)
		1722	CODE:
		1723	RETVAL = env->set_lk_max_lockers (env, max);
		1724	OUTPUT:
		1725	RETVAL
		1726
		1727	int set_lk_max_locks (DB_ENV *env, U32 max)
		1728	CODE:
		1729	RETVAL = env->set_lk_max_locks (env, max);
		1730	OUTPUT:
		1731	RETVAL
		1732
		1733	int set_lk_max_objects (DB_ENV *env, U32 max)
		1734	CODE:
		1735	RETVAL = env->set_lk_max_objects (env, max);
		1736	OUTPUT:
		1737	RETVAL
		1738
		1739	int set_lg_bsize (DB_ENV *env, U32 max)
		1740	CODE:
		1741	RETVAL = env->set_lg_bsize (env, max);
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745	int set_lg_max (DB_ENV *env, U32 max)
		1746	CODE:
		1747	RETVAL = env->set_lg_max (env, max);
		1748	OUTPUT:
		1749	RETVAL
		1750
		1751	DB_TXN *
		1752	txn_begin (DB_ENV *env, DB_TXN_ornull *parent = 0, U32 flags = 0)
		1753	CODE:
		1754	errno = env->txn_begin (env, parent, &RETVAL, flags);
		1755	if (errno)
		1756	croak ("DB_ENV->txn_begin: %s", db_strerror (errno));
		1757	OUTPUT:
		1758	RETVAL
		1759
		1760	MODULE = BDB PACKAGE = BDB::Db
		1761
		1762	void
		1763	DESTROY (DB_ornull *db)
		1764	CODE:
		1765	if (db)
		1766	{
		1767	SV *env = (SV *)db->app_private;
		1768	db->close (db, 0);
		1769	SvREFCNT_dec (env);
		1770	}
		1771
		1772	int set_cachesize (DB *db, U32 gbytes, U32 bytes, int ncache = 0)
		1773	CODE:
		1774	RETVAL = db->set_cachesize (db, gbytes, bytes, ncache);
		1775	OUTPUT:
		1776	RETVAL
		1777
		1778	int set_flags (DB *db, U32 flags);
		1779	CODE:
		1780	RETVAL = db->set_flags (db, flags);
		1781	OUTPUT:
		1782	RETVAL
		1783
		1784	int set_encrypt (DB *db, const char *password, U32 flags)
		1785	CODE:
		1786	RETVAL = db->set_encrypt (db, password, flags);
		1787	OUTPUT:
		1788	RETVAL
		1789
		1790	int set_lorder (DB *db, int lorder)
		1791	CODE:
		1792	RETVAL = db->set_lorder (db, lorder);
		1793	OUTPUT:
		1794	RETVAL
		1795
		1796	int set_bt_minkey (DB *db, U32 minkey)
		1797	CODE:
		1798	RETVAL = db->set_bt_minkey (db, minkey);
		1799	OUTPUT:
		1800	RETVAL
		1801
		1802	int set_re_delim(DB *db, int delim);
		1803	CODE:
		1804	RETVAL = db->set_re_delim (db, delim);
		1805	OUTPUT:
		1806	RETVAL
		1807
		1808	int set_re_pad (DB *db, int re_pad)
		1809	CODE:
		1810	RETVAL = db->set_re_pad (db, re_pad);
		1811	OUTPUT:
		1812	RETVAL
		1813
		1814	int set_re_source (DB *db, char *source)
		1815	CODE:
		1816	RETVAL = db->set_re_source (db, source);
		1817	OUTPUT:
		1818	RETVAL
		1819
		1820	int set_re_len (DB *db, U32 re_len)
		1821	CODE:
		1822	RETVAL = db->set_re_len (db, re_len);
		1823	OUTPUT:
		1824	RETVAL
		1825
		1826	int set_h_ffactor (DB *db, U32 h_ffactor)
		1827	CODE:
		1828	RETVAL = db->set_h_ffactor (db, h_ffactor);
		1829	OUTPUT:
		1830	RETVAL
		1831
		1832	int set_h_nelem (DB *db, U32 h_nelem)
		1833	CODE:
		1834	RETVAL = db->set_h_nelem (db, h_nelem);
		1835	OUTPUT:
		1836	RETVAL
		1837
		1838	int set_q_extentsize (DB *db, U32 extentsize)
		1839	CODE:
		1840	RETVAL = db->set_q_extentsize (db, extentsize);
		1841	OUTPUT:
		1842	RETVAL
		1843
		1844	DBC *
		1845	cursor (DB *db, DB_TXN_ornull *txn = 0, U32 flags = 0)
		1846	CODE:
		1847	errno = db->cursor (db, txn, &RETVAL, flags);
		1848	if (errno)
		1849	croak ("DB->cursor: %s", db_strerror (errno));
		1850	OUTPUT:
		1851	RETVAL
		1852
		1853	DB_SEQUENCE *
		1854	sequence (DB *db, U32 flags = 0)
		1855	CODE:
		1856	{
		1857	errno = db_sequence_create (&RETVAL, db, flags);
		1858	if (errno)
		1859	croak ("db_sequence_create: %s", db_strerror (errno));
		1860	}
		1861	OUTPUT:
		1862	RETVAL
		1863
		1864
		1865	MODULE = BDB PACKAGE = BDB::Txn
		1866
		1867	void
		1868	DESTROY (DB_TXN_ornull *txn)
		1869	CODE:
		1870	if (txn)
		1871	txn->abort (txn);
		1872
		1873	int set_timeout (DB_TXN *txn, NV timeout, U32 flags)
		1874	CODE:
		1875	RETVAL = txn->set_timeout (txn, timeout * 1000000, flags);
		1876	OUTPUT:
		1877	RETVAL
		1878
		1879
		1880	MODULE = BDB PACKAGE = BDB::Cursor
		1881
		1882	void
		1883	DESTROY (DBC_ornull *dbc)
		1884	CODE:
		1885	if (dbc)
		1886	dbc->c_close (dbc);
		1887
		1888	MODULE = BDB PACKAGE = BDB::Sequence
		1889
		1890	void
		1891	DESTROY (DB_SEQUENCE_ornull *seq)
		1892	CODE:
		1893	if (seq)
		1894	seq->close (seq, 0);
		1895
		1896	int initial_value (DB_SEQUENCE *seq, db_seq_t value)
		1897	CODE:
		1898	RETVAL = seq->initial_value (seq, value);
		1899	OUTPUT:
		1900	RETVAL
		1901
		1902	int set_cachesize (DB_SEQUENCE *seq, U32 size)
		1903	CODE:
		1904	RETVAL = seq->set_cachesize (seq, size);
		1905	OUTPUT:
		1906	RETVAL
		1907
		1908	int set_flags (DB_SEQUENCE *seq, U32 flags)
		1909	CODE:
		1910	RETVAL = seq->set_flags (seq, flags);
		1911	OUTPUT:
		1912	RETVAL
		1913
		1914	int set_range (DB_SEQUENCE *seq, db_seq_t min, db_seq_t max)
		1915	CODE:
		1916	RETVAL = seq->set_range (seq, min, max);
		1917	OUTPUT:
		1918	RETVAL
		1919

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